Multi-Function Material Moving Assembly and Method

Abstract

A multi-function apparatus and method for material moving, including excavation and movement of dirt, gravel and other material, as well as other functions. The apparatus is mobile, and comprises a bucket assembly which also has a clamping device, with the bucket being able to rotate about a transverse axis and also have continued rotation about a longitudinally forward to rear axis of rotation. In one embodiment the apparatus travels on ground engaging tracks, and in another embodiment the apparatus is able to travel either over the ground or on rail track engaging wheels, with the same apparatus being able to operate in either mode.

Description

BACKGROUND OF THE INVENTION

a) Field of the Invention

The present invention relates to an assembly which can provide a variety of functions, including the excavating any movement of dirt, gravel and other material, and also of the movement of various objects and positioning them in various orientations. Thus, the term “material” is to be interpreted more broadly to include various items which can be moved, lifted, aligned in various positions and orientations, etc.

b) Background Art

For a number of decades there have existed in the prior art machines which operate an excavating bucket to excavate material from the earth, and also to move this material that has been excavated. Quite commonly the bucket is mounted to an elongate boom/support arm assembly, and it rotates about a horizontal axis that is transverse to a lengthwise axis of the arm member to which it is mounted. This assembly often comprises a mobile machine, which travels either on tracks or wheels, and which comprises a cab to which the boom/support arm assembly is mounted, with the cab rotatably mounted for rotation about a vertical axis. Also the prior art shows a bucket assembly where there is a bucket mounted to a boom assembly or other base member, and the bucket is rotatable about two or more axes.

In some designs, there is also provided a clamping member that is pivotally mounted to the bucket so that it can move toward and away from the bucket and clamp various articles between the bucket and the clamping member. This clamping member is often referred to as a “thumb”; the reason for this likely being that the bucket plus the clamping member could be equated to a person's hand where the fingers would comprise the bucket and the clamping member would comprise the thumb, when the hand is grasping an article, such as an elongate pole.

A search of the prior art has developed a number of U.S. patents, and these are as follows:

• • U.S. Pat. No. 4,032,025 (ROSS) discloses a back hoe having a main boom, 14. At the forward end of the boom 14 there is located a jib boom 12 which is pivotally mounted at 18 to the boom 14 and is shown extended downwardly. The jib boom 12 has an axis of rotation extending down through center line of the jib boom 12. The lower end of the jib boom 12 there is a hinge mounted bucket 10. There are three axes of rotation, namely the upper axis rotation 18, the lower axis rotation 42, and also the vertically aligned axis of rotation extending down the center of the length of the jib boom.
  • U.S. Pat. No. 5,515,626 (HOLSCHER) discloses what is called a “coupling device”, that is positioned between an operating arm of an excavator and an implement, such as an excavating bucket. With reference to FIG. 1, there is shown a “stick 2” which is accompanied by an actuator 3 comprising a hydraulic actuator that is not shown, and the stick 2 has at it's lower end a shaft 4 which provides an axis of rotation for a coupling device which comprises an upper support part 7. Thus, this part 7 is able to rotate upwardly and downwardly about a transverse horizontal axis defined by the shaft 4. There is an upper quick coupling 11 by which the upper support part 7 is attached to both the stick 2 and to the actuator 3.
  • The support part 7 provides a second generally horizontal axis or rotation indicated at 10 in FIG. 1. The upper support part 7 has two oppositely positioned elements 32 and 33, and these support rings 30 connect to downwardly extending bearing elements 28 and 29. The bearing element 29 can be seen more clearly in FIG. 2 where it is tilted between left hand position shown in full lines and a right hand position shown in broken lines, thus showing that this could go from side to side about the axis of rotation 10.
  • There is a worm gear drive mechanism by which this entire support section 8 carrying the bucket 1 can be moved from one side to the other, and this worm gear drive is best shown in FIG. 3. Thus, the bucket 1 can be rotated up and down about the first axis of rotation provided by the shaft 4, and also can be moved from side to side at different tilts about the second axis of rotation 10.
  • There is a third axis of rotation which is not indicated on the drawings, but is described in column 3, beginning on line 31 where it is stated that there is a coupling device provided by a rotation device 26 mounted between the plates 24 and 25 in a cylindrical housing. It also states that it is driven by a worm gear (not shown), and there is a reversible hydraulic motor 27 which is shown in FIG. 3.
  • U.S. Pat. No. 4,283,866 (OGAWA) relates to a convertible bucket attachment. The boom 11 has an axis rotation at the end of the member 12, and the bucket would appear to have an axis of rotation at 5″.
  • U.S. Pat. No. 4,779,364 (HOLMDAHL) discloses a “device for a load carrying unit”. With reference to FIG. 1, there is a device 14 which carries the load carrying unit 12 which is shown in broken lines in FIG. 1, and it is attached by a member 16 to a support member 10. There is a shaft 20 which provides an axis of rotation and two plates 22 are rotatably mounted to the shaft 20 to rock back and fourth about a transverse horizontal access. There is a member 34 which is rotatably mounted about a vertical axis and is supported by a surrounding member 38. FIG. 4 illustrates the member 34 in cross section, and there are bearing members 44 and 46 which are arranged to be rotatably mounted and these resist the loads that are imposed on the member 34. There is a piston 26, which presumably would move the plates 22 to desired angular positions, and the attachment means would be rotatable with the member 34 and would attach to the load carrying unit 12.
  • U.S. Pat. No. 5,140,760 (MANNBRO) discloses an “arrangement for rotator units”. In FIG. 1, there is shown an excavator arm 1 which has an attachment pivotally mounted to the end of the arm 1, and there is a piston 4 acting through linkage 3 to rotate the device of member 2. The bucket 9 is rotatable mounted about a vertical axis to a shaft coupling 8.
  • U.S. Pat. No. 5,398,430 (SCOTT et al) discloses an “earth moving and compacting rig”. This device is directed toward back filling trenches and compacting the filling material. In FIG. 1, there shown a back hoe having an end bucket 23, that is mounted to boom 21. There is a vibrator 22, to which the bucket 23 is attached, and these are attached to the lower end of boom 21 about a transverse axis of rotation. Also, with reference to FIGS. 5 and 6 it can be seen that the bucket 23 is attached by means of two swivel plates 28 and 29 that can be rotatably positioned at different rotational angular position relative to an axis of rotation which is generally perpendicular to the first access of rotation.
  • U.S. Pat. No. 5,596,824 (SCOTT et al) shows substantially the same type of device as shown in there earlier patent (U.S. Pat. No. 5,398,430), with some added features.
  • U.S. Pat. No. 5, 649,377 (TANADA) Discloses “a multi-purpose bucket structure” which is adapted to perform various tasks such as pulling down a building, digging in the ground, carrying ready mix concrete, etc. There is a bucket having two bucket portions hinged to each other and arranged so that a gap is formed between the peripheral edges when the bucket members are close to one another, and the gap is closed by a cover removably attached to at least one of the bucket members. In FIGS. 6 and 7, the bucket is shown mounted to an arm which extends from a tracked vehicle.
  • U.S. Pat. No. 6,269,561 (CUMMINGS) discloses a “tilt-able implement for excavator machines and alike”. This patent discloses an excavating machine which could be a bulldozer or possibly a bucket attached to the end of a boom 12 which is called a “handle 12” in the text of the patent. There is a device where the bucket is mounted about a front to rear horizontal axis rotation and is positioned by two cylinders 15 and 16 on opposite sides of the bucket so that it can be tilted about a forward to rear axis, so that the bucket will be tilted one way or the other, as indicated in FIG. 4.

While many of these machines are able to perform various tasks relative to excavation and movement of material and moving and manipulating objects, there are various situations where there is a need for certain functions to be performed which may be beyond the capabilities of the machines presently known to the applicant to accomplish these effectively. An example of this would be where excavating and material movement is needed, and also the function of clamping different objects so that these could not only be moved, but also oriented in various positions and be deposited either on a vehicle for a movement or to some collecting location or possibly to accomplish other tasks. This is given by way of example, and there are obviously other situations where there are other requirements in addition to these. It is toward these issues and yet other issues that the embodiments of the present invention are directed.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a side elevational view of an embodiment of the multi-function assembly of the present invention;

FIG. 2 is a view similar to FIG. 1, but only showing a front portion of a bucket assembly and a front portion of a primary arm member to which the bucket assembly is mounted;

FIG. 3 is a view similar to FIG. 2, showing a side elevational view of the bucket assembly and the forward part of the arm, and showing the bucket section having been rotated about 90 degrees from the position of FIGS. 1 and 2, with an elliptical arrow 36 illustrating the rotational path of travel of the bucket section;

FIG. 4 is a view similar to FIG. 2, but showing a bucket in a somewhat different angular position;

FIG. 5 is a view similar to FIG. 2, but showing the clamping member of the bucket section having been rotated to a more open position;

FIG. 6 is an isometric view of the bucket section taken from a location to the rear and slightly above the bucket section;

FIG. 7 is a sectional view taken along the line 7-7 of FIG. 6;

FIG. 8 is a sectional view taken along the line 8-8 of FIG. 6;

FIG. 8A is a view taken along the same section as in FIG. 8, but showing only a fluid supply/distribution section;

FIG. 8B is a partial sectional view taken along the line 8B of FIG. 8 showing a worm drive gear drive section of the bucket assembly;

FIG. 8C is a partial sectional view which is taken along a line 8C of FIG. 8B;

FIG. 9 is a sectional view taken along 9-9 of FIG. 6 and showing the rotary mounting of a base structure of a clamping section;

FIG. 10 is a side elevational view of the bucket gripping a cylindrical object such as a log or a pole;

FIG. 11 is a top elevational view of the assembly of this embodiment of the present invention, showing the bucket section gripping the pole or log and lifting it;

FIG. 12 is a view similar to FIG. 11, but showing the bucket section having been rotated 90 degrees so that the pole or log is more longitudinally aligned;

FIG. 13 follows FIGS. 11 and 12 and is a side elevational view of the assembly showing the bucket having been rotated 90 degrees about the axis of rotation of the bucket section about a forward to rear axis of the bucket section and also having been rotated 90 degrees so that the bucket holds the log or pole in a vertical orientation;

FIG. 14 is a top plan view of the assembly in a position where the bucket is being moved rearwardly as shown by an arrow as the bucket section is moved along a path toward the mobile vehicle;

FIG. 15 is a view similar to FIG. 14, but showing the bucket section having been rotated 90 degrees from the position of FIG. 14 so that the open face of the bucket is facing laterally, and showing in phantom lines the mobile vehicle having been rotated about its vertical center axis to the dotted line position of FIG. 15 so that the bucket section is traveling in a circular path;

FIGS. 16 and 17 are views showing the bucket section in a laterally facing direction and thus scraping along an earth surface to collect some of the surface material;

FIGS. 18, 19 and 20 are side elevational views of the bucket section with the clamping member in different positions to perform dirt moving and also surface finishing operations;

FIG. 21 is a side elevational view, partly in section, illustrating a second embodiment of the present invention;

FIG. 22a is a schematic view a hydraulic drive system of the first embodiment; and

FIG. 22b is a schematic drawing similar to FIG. 22a, showing a hydraulic drive system of the second embodiment.

EMBODIMENTS OF THE PRESENT INVENTION

It is believed that a better understanding of this embodiment of the present invention will be achieved by first identifying the basic components of the multi-function material moving assembly and then describing the various pivot axes and alignment axes that dictate the movement of these components. This will be followed by a brief description of the actuating members and the basic movements of the components. After this there will be a more detailed presentation of this embodiment.

a) Introduction and General Description of the Assembly 10

The multi-function assembly 10 of this embodiment of the present invention comprises a mobile machine 12 which has an operating support section 13 which in this embodiment comprises a boom 14 pivotally mounted to the machine 12, and a primary arm member 16 (sometimes called a “stick”) having a pivot connection to the boom 14. The primary arm member 16 and the boom could each be considered to be an operating member. There is a bucket assembly 18 which has a forward end portion and also a rear end portion by which it is mounted to the forward end of the primary arm member 16. The boom 14, the primary arm member 16 and the bucket assembly 18 are all aligned in a longitudinally and vertically aligned reference plane 17 which is indicated in FIG. 11. This bucket assembly 18 has longitudinal axis 19 and comprises a bucket section 20 which in turn comprises a bucket 22 and a clamping member 24. The bucket assembly 18 also comprises an intermediate connecting section 26 by which bucket section 20 is connected to the front end of the primary arm member 16. The bucket assembly 18 also has a transverse axis 27 and a vertical axis 28 perpendicular to the longitudinal axis 19 and the transverse axis 27.

To describe briefly the pivot axes about which several of these components move, first there is a rear horizontally aligned pivot axis 30 which is at the rear base end of the boom 14, and the boom 14 rotates pivotally back and forth about this axis 30. The boom also has a forward pivot axis 32 at which the boom connects to a rear end portion of the primary arm member and this same pivot axis 32 is the rear pivot axis for pivotal movement of the primary arm member 16.

At the forward end of the primary arm member 16 there is a forward primary arm member pivot axis 34, and this same pivot axis 34 is the rear pivot axis for the bucket assembly 18. The pivot axes 30, 32 and 34 are all horizontally aligned, and perpendicular to the reference plane 19 and the back and forth movement of the boom 14 about the pivot axis 30, the back and forth movement of the primary arm member 16 and also the back and forth movement of the bucket assembly 18 are all located in the longitudinally and vertically aligned forward to rear reference plane 19.

To describe axes of rotation reference will now be made to FIGS. 2 and 3. As indicated above, the bucket assembly 18 comprises the bucket section 20 comprising both the bucket 22 and the clamping member 24 and the intermediate connecting section 26. These two sections 18 and 26 are arranged so that the bucket section 20 rotates relative to certain portions of the intermediate connecting section 26 about a bucket axis of rotation 35 that extends in a forward to rear direction relative to the bucket section 20 and generally is at right angles to the rear bucket assembly pivot axis 34. Thus, as shown in FIG. 3, the bucket section 20 is able to rotate in a circular path relative to this bucket axis of rotation 35, as indicated by the arrow 36. In this embodiment the bucket axis of rotation 35 is coincident with the longitudinal axis 19 of the bucket assembly 18.

There is yet another pivot of axis, and this is the clamping member pivot axis 37 (See FIGS. 9, 2 and 3) about which the clamping member 24 rotates relative to the bucket 22. This pivot axis 37 is generally perpendicular to the longitudinal axis 19 of the bucket assembly 12. This movement can be observed by examining FIGS. 4 and 5.

The boom 14 has a boom alignment axis 38 which extends from its boom rear pivot axis 30 to the boom forward pivot axis 32. The primary arm member 16 also has an alignment axis 40 which extends from the pivot axis 32 to the forward primary arm member pivot axis 34. The bucket assembly has a bucket assembly alignment axis 19 in this embodiment which is coincidental with the bucket axis of rotation 35 and a transverse bucket axis 41 (see FIG. 3) and a vertical bucket axis 42 (see FIG. 2).

We will now turn our attention to some of the other operating components of this assembly 10. With reference to FIG. 1, in this particular embodiment of the invention, the mobile machine 12 can be seen to have the overall configuration of a track hoe. Thus, the machine 12 comprises a cab 44 which is mounted to a base section 45 shown schematically in FIG. 1 which in turn is carried by a locomotion section 46 which in this embodiment comprises a ground engaging locomotion section in the form of a track section 43 which comprises two laterally spaced tracks 47 (only one which is shown only in outline in FIG. 1). Alternatively the ground engaging locomotion section 46 could compress forward and rear sets of wheels. The cab 44 is mounted so that it could rotate about a vertical center axis of rotation indicated at 48. As will be described later in this text, the ability of the cab 44 to rotate about the vertical center axis 48 enables the overall assembly 10 to perform certain functions which would otherwise be accomplished less easily.

To facilitate the further descriptive (and as is probably evident from the descriptive text which has been presented thus far), the term “forward” shall denote a direction which, as shown in FIG. 1, is from the cab 44 toward the primary arm member 16. The term “rearward” shall denote the opposite direction. Also, relative locations will be described by the terms “front”, “rear”, “forward”, or “rearward” in accordance with the forward and rear directions. With regard to relative locations on the primary arm member 16 and the bucket assembly 18, the terms “forward” and “rearward” shall apply relative to a reference location in a configuration where the primary arm member 16 is extending horizontally from the mobile machine 12, and the bucket assembly 18 is in alignment with the primary arm member 16 as shown in FIGS. 1 and 2.

The terms “upward” or “downward” and also the terms “up” and “down” will in the overall description of the assembly 10 refer to the relative positions with the assembly 10 in its position of FIG. 1, except that the primary arm member 16 would be rotated upwardly about fifty degrees to a horizontal position so that the primary arm member 16 and the bucket assembly 18 in a position where these are all extending forwardly from the cab 44 and are horizontally aligned.

However, in the following description an exception will be made for the description specifically of the bucket assembly 18. There are two reasons for this. First, when a person hears the term “bucket”, the person immediately has the concept of some liquid or loose material being held in the bucket which is in an upright position so that this material will not spill out. The second reason is that in FIGS. 6, 7, 8, 8B and 8C, the bucket assembly 18 is shown (and described at length) with an open surface region of the bucket facing upwardly in the position where the bucket would be carrying a load of dirt, gravel, etc. If someone were to begin reading this text without having read the earlier portion of the text, that person would possibly be confused if the “bottom wall 76” of the bucket were called the “top wall”. Further, it also to be understood that when the terms “upward” or “downward” are used in connection with the primary arm member 16 and the bucket assembly 18, these are located in a different angular orientation so that these terms do not denote their actual location as seen in any particular drawing.

The boom 14 is rotated about the pivot axis 30 by means of an actuator 50. This actuator 50 has a base connecting location in (or adjacent to) the cab structure and an upper forward pivot connection at 52 on the boom 14. There is also a primary arm member actuator 54 which has a rear connection 56 at a more rearward part of the boom 14 and a forward connection at 58 at the forward end of the primary arm member 16.

Also the primary support arm comprises a bucket assembly actuator 60 which has a rear end connection 62 at an upper rear portion of the primary arm member 16 and a forward end connection 64 that in turn connects to a pair of links 66 and 68. These links 66 and 68 in turn connect pivotally to, respectively, a forward location 67 on the primary arm member 16 and to a rear mounting connection 69 of the bucket assembly 18.

With the foregoing description being completed, we will now proceed with more detailed descriptions of the components of the assembly 10 and there will now be a description of the bucket section 20. After that description is completed, there will then be a detailed description of the intermediate connection 26, and then a discussion of some of the operating modes of this embodiment of the invention.

b) The Bucket Section 20

As indicated earlier in this text, the bucket section 20 comprises the bucket 22 and the clamping member 24.

i) The Bucket 22.

• • The bucket 22 in turn comprises a bucket structure 70. This bucket structure 70 comprises two side walls 72, and also front, bottom and back wall portions 74, 76 and 78, respectively. (See FIG. 7.) These three wall parts 74, 76, and 78 are joined together as one continuous curved wall generally designated 80. The bucket structure 80 is made in upper and lower sections 82 and 84 which are joined together at a seam 86 by suitable means, such as welding. Also, the bucket structure has upper front, rear and side edges 88, 90 and 92.

ii) The Clamping Member 24.

• • The clamping member 24 comprises a clamping member structure 98 that comprises two side arms 100 and 102 and a front cross member 104. The rear end portions 106 of the two side arm members 100 and 102 are fixedly connected (e.g. by welding) to a pivot mounting member which can be in the form of a cylindrical pivot tube 108. The tube 108 is in turn rotatably mounted about the clamping arm pivot axis 37 by means of oppositely positioned bushings 110 (See FIG. 9) mounted to two ears 112 which are bolted removably to the bucket structure 70 (See FIGS. 5 and 6). Thus by removing the ears 112, the pivot tube 10 which the clamping member structure 98 can be removed and replaced.
  • To rotate the clamping member 24 about its pivot axis 37 at the center of the pivot tube 108, there is a hydraulic actuating section 113 which in this embodiment is provided as two laterally spaced hydraulic actuators 114. Each actuator 114 has an upper connection 116 to the pivot tube 108, and a lower end connection 118 to one of a pair of inner and outer mounting plates 120 and 122 which are in turn rigidly connected to a rear portion of the bucket structure 70. Also, as can be seen in FIGS. 6 and 8, the rear part of the bucket structure 70 has a reinforcing structure 124 with two connected angled reinforcing plate portions 126.
  • As can be seen in FIG. 6, the side arms 100 and 102 of the clamping member 24 are located so that in a closed position, the side arm members 100 and 102 are adjacent to (and just outside of) the upper edge side edge portions 90 and 92 of the bucket 22. The lower edge portion of the front cross member 104 comes into engagement with the upper edge portion 88 of the front edge of the front wall 74 of the bucket structure 70.
  • As indicated earlier in this text, the bucket assembly 18 further comprises an intermediate connecting section 26. This intermediate connecting section 26 connects the bucket section 20 to the forward end of the primary arm member 16 and provides a number of functions for the bucket assembly 18.

c. The Intermediate Connecting Section 26

It should be understood that most of the components beginning with the numerical designation 130 and extending on through to the numerical designation 214 appear primarily in FIGS. 8, 8A, 8B, 8C and 9, and these are in large part absent in FIGS. 1 through 7 and 10 through 20. Thus, many of these components are only indicated schematically in the FIGS. 1 through 7 and 10 through 20. With that explanation being given, we will now proceed to the more detailed description of the intermediate connecting section 26.

In addition to having the connecting function, this intermediate connecting section 26 performs some other functions. For purposes of description, this section 26 comprises a fluid supply/distribution section 130 to supply fluid to the hydraulic actuating section 113 and a structural/drive section 132.

The structural/drive section 132 in turn comprises:

• • i. a bucket connected support section 134;
  • ii. a primary arm connected support section 136;
  • iii. a rotary drive connection 138.
  • There will first be a description of the fluid supply/distribution section 130.

d) The Fluid Supply/Distribution Section 130

The fluid supply/distribution section 130 is shown in FIG. 8 and will now be described with reference to primarily FIG. 8A which shows this section 130 in a larger scale. It comprises a fluid carrying section 139 which in this embodiment comprises a center fluid distribution member 140 which has a longitudinal center axis which is coincident with the aforementioned bucket axis of rotation 35. The rear end portion of the center fluid distribution member 140 is connected to a cylindrical mounting member 141 which is part of the fluid carrying section 139 and as shown herein is aligned on the same axis 35. Neither the center fluid distribution member nor the mounting member 41 rotate with the bucket section 20.

The center fluid distribution member 140 has two longitudinally aligned supply passages 142 which extend through the mounting support member 141 to a rear location where these are in turn connected to hydraulic feed tubes 143 through which the hydraulic fluid is moved to and from a hydraulic drive source from the primary arm member 16 or from some other location.

At the forward end of the center member 140 there is a rotary fluid connection 144. This connection 144 comprises two circumferentially aligned longitudinally spaced distribution grooves 145. and also three seals 146 (O-ring seals) to seal off each of the two distribution grooves 145. There are two groove inlet/outlet openings 147, each of which leads from one of the passageways 142 into a related one of two distribution chambers defined by the three seals 146.

There is an outer cylindrical member 148 which is positioned concentrically around the center member 140 and which is fixed relative the bucket structure, and this is part of the fluid rotary connection 144. This outer cylindrical member 148 has two inlet/outlet ports 150 which are located at the same longitudinal location as the distribution grooves 145. There are two connecting tubes 152 which extend from the inlet/outlet ports 150 and are directed to the two hydraulic actuators 114 to extend and retract these hydraulic cylinders 114 to in turn open and close the clamping member 24. Obviously there could be a reversal of parts with the grooves 145 being formed in the outer member 148 and the groove outlet openings 147 being located at those grooves 147.

At the front end of the center liquid distribution member 140 there is a snap ring 154 to help position the center liquid distribution member within the outer cylindrical member 148, with a low friction washer 156 being provided between the snap ring and the cylindrical member 148. The mounting support member 141 that connects to the center liquid distribution member 140 has a diameter moderately larger than the diameter of the main part of the center liquid distribution member 140 to create a forwarding facing cylindrical shoulder 160. There is a second low friction washer (not shown), positioned at a location 162 between that shoulder and the rear circumferential edge surface of the outer cylindrical member 148.

In the actual operation of the assembly 10, as the bucket section 20 rotates about its axis of rotation 36, the outer cylindrical member 148 rotates relative to the center liquid distribution member 140 which does not rotate.

Therefore, in the operation of the assembly 10, when the bucket section 20 rotates about its axis of rotation 35, the center liquid distribution member 140 of the fluid supply/distribution section 130 remains stationary while the outer cylindrical member 148 is revolving with the bucket section 20 around the stationary center member 140. During this time the inlet/outlet ports 150 of the cylindrical member 148 remain in constant contact with the grooves 145 so that the hydraulic fluid can be directed into the two hydraulic actuators 114 to either extend or retract them.

Thus, to summarize the operation of moving the clamping member 24, the movement of the clamping member 24 is accomplished by means of the two hydraulic actuators 114. The fluid supply distribution section 130 is arranged so that the hydraulic lines 143 are connected to the rear end of the two internal passages 142 of the center member 140, and these passageways 142 connect through the openings 147 into the two circumferential grooves 144 that in turn connect to the ports 150 to the two tubes 152 that connect to opposite ends of the actuators 114. Thus, the center liquid distribution member is non-rotatable in that it does not rotate with the bucket section 20 when it rotates about its axis 35. On the other hand, the outer cylindrical member 148 and the tubes 152 that are attached therefore rotate with the bucket section 20.

Thus, the bucket section 20 could be rotated continuously in one direction around the axis of rotation 35, which would not possible if it were necessary to have electric wires or fluid supply lines connected between the primary arm member 16 and the rotating bucket section 20.

e) The Structural/Drive Section 132

As indicated above, there are three components of this section, and these will now be described in order, with reference to primarily being made to FIGS. 6 and 8.

i) The Bucket Connected Support Section 134.

• • This section 134 comprises in part a generally planar mounting plate 166 which is aligned perpendicular to the axis of rotation 35 of the bucket section 20. The plate 166 has a center through opening 168 to accommodate the fluid supply distribution section 130. This mounting plate 166 is supported by a connecting structure to 170 to the forward part of the bucket 22, and this structure 170 comprises the earlier mentioned mounting plates 120.
  • These plates 120 also provide support for the lower connecting portions 118 of the hydraulic actuators 114 for the clamping section 24. The plate 166 is connected by bolts 172 to an outer race 174 of a rotary bearing 176 which also has an inner race 177. The intermediate roller bearing support section in the form of ball bearing members 173 are between the outer and inner races 174 and 177. The structural/drive section can be considered as having a load bearing plane which is perpendicular to the axis of rotation 35 and located at the location of the intermediate roller bearing support section. The load bearing function of this roller bearing section 177 will be discussed more completely later herein.

ii) The Primary Arm Member Connected Support Section 136.

• • This section 136 comprises a mounting plate 178 which also is perpendicular to the axis of rotation 35 of the bucket assembly 20. There is a spacing structure 180 which is positioned against the forward surface of the mounting plate 178, and the front surface of the spacing structure 180 bears directly against the inner bearing race 177 of the aforementioned rotary bearing 176. Several bolts 184 connect the plate 178, the structure 180 and the inner bearing race together.
  • There is also provided a small retaining plate 186 which is positioned at the center of the mounting plate 178 and keeps the center liquid distribution member 140 of the fluid supply/distribution section 130 in its operating position. The plate 178, the structure 180 and the inner bearing race 177 all have aligned center through openings to accommodate the center liquid distribution member 140 in support member 141 of the fluid supply/distribution section 130.
  • The aforementioned spacing structure 180 has at its rear end portion a radially outwardly extending plate member or disc 187 and at the outer circumference of this disc like plate member 187, there is a forwardly extending cylindrical skirt 188 which functions as a protective cover surrounding the bearing 176 and also the drive mechanism which is to be described below. Further, this skirt structure 188 attaches to the housing for the rotary drive section 138 which will be described immediately below.
  • The mounting plate 178 has at its back surface a pair of laterally spaced connecting lugs or ears 190 which can be best seen in FIG. 4. The forward ends of lugs 190 are fixedly connected (e.g. by welding) to the plate 178. At the rear portion of each of these lugs 190 there is an opening 192 which in a connected position is located at the pivot location 34. A pin, a rod, or other connecting structure is inserted through these openings 192 of the lugs 190 and also through matching openings in the lower-most end of the primary arm member 16 so that the bucket assembly 18 can rotate about the pivot axis at 34.
  • The aforementioned mounting plate 178 extends upwardly beyond its connecting spacing structure 180 so that it is in a position for the connecting location to engage the aforementioned actuating link 68 that is part of the primary arm member 16. Thus, as the actuator 60 is extended and retracts, this causes the rotational movement of the mounting plate 178 cause the bucket section 20 upwardly and downwardly about the pivot axis 34, and all the loads from the rear mounting plate are transmitted by the lugs 190 and the connecting location 69 into the primary arm member 16.

iii) The Rotary Drive Section 138.

• • This section 138 will be described with reference to FIGS. 8, 8B and 8C. With reference first to 8B and 8C, there is a drive section 200 which comprises a ring gear 202 having evenly spaced exterior teeth 204. The ring gear 202 is fixedly connected to the outer surface of the outer race 174 of the rotary bearing 176.
  • There is a worm gear 206 which is contained in a cylindrical housing 208. The helical threads 210 of the worm gear 206 engage the teeth of the 204 of the ring gear 202 to drive the ring gear 202 in a rotary motion and thus cause the rotation of the outer race 174 of the rotary bearing 176. There is an electric motor 212 which extends laterally from the worm drive 206 and has a rotary power outlet to drive the worm gear 206. Alternatively, a hydraulic motor could be used.
  • It was indicated previously in this text that there is a skirt 188 which extends around the drive member (i.e., the ring gear 202), and also provide support for the entire rotary drive section 138. For ease of illustration, this is not been shown in FIGS. 8B and 8C. However, it is to be understood that this cylindrical skirt 187 does extend entirely around the ring gear 202 (except for the location of the worm gear housing 212) and also connects to the housing 208 to provide support. Also, as indicated previously, this cylindrical skirt 188 is part of the non-rotating structure, so that the worm drive 206 remains at a stationary location, and the ring gear 202 rotates with the bucket section 20.

iv) Transmitting the Loads Between the Bucket Section 20 and the Primary Arm Member 16.

• • The bucket structure has at its forward end the two mounting members 120 that in turn connect rigidly to the mounting plate 134 which is in turn rigidly connected to the outer race 174 of the rotary bearing 176. All of the loads that are imposed on the bucket 20 are thus transmitted through the bucket connected support section 134 acting structurally as a unitary structure into the outer bearing race 174.
  • The rotary bearing 176 comprises the outer and inner races 174 and 177, and the ball bearing members 173 are positioned between the outer and inner races 174 and 177. All of the loads that are imposed from the bucket section 20 to the outer bearing race 174 are thus transmitted through the ball bearing members 173 into the inner bearing race 177. The inner bearing race 177 is fixedly connected to the spacing structural member 180 which is rigidly connected to the mounting plate 178. The mounting plate 138 reacts these loads into two locations. First, the loads are transmitted into the two lugs 190 which connect rotatably at the pivot locations 34 so that the bucket section 20 is constrained to its rotary motion about the pivot axis 34. Second, the loads are transmitted from the connecting location 69 into the link 68 and into the actuator 60 of the primary arm member 16 and into the primary arm member structure.
  • The location of the bucket section 20 in its privot motion about the pivot axis 35 is in turn dictated by the link 68 that is in turn connected to the actuator 60 of the primary arm member 16. The actuator 60 is in turn connected at its front end by the link 66 to the primary arm member 16, and also to its pivot connection at 62.
  • Next, we look at the rotational movement of the bucket section 20 about its axis of rotation 35. The bucket section 20 is (as indicated previously) fixedly connected to the outer race 174, and this outer race 174 is in turn connected to the ring gear 202 of the drive section 200. The ring gear 202 is in turn driven by the worm gear 206 which is in turn driven by the motor 212. The rotational force exerted by the worm gear 206 is thus is transmitted into the motor 212 into the cylindrical housing 208 and from there into the cylindrical skirt 188 which in turn transmits the load into the disc-like plate 187 that is in turn transmitted into the mounting plate 178.
  • The fluid supply distribution section 130 is substantially (if not almost entirely) isolated from these loads. The center member 140 is positioned within the outer cylindrical 148 which is in turn connected to the bucket load carrying structure. This center member 140 essentially “floats” within this outer cylindrical member 148, and it has at opposite ends the low friction washers by which any forward and rear movement is restricted. Then there are the three O-rings 146 that serve not only a fluid sealing function, but also provide a somewhat “soft” positioning support for the center member 140.

f) Overall Operation of the Multi-Purpose Assembly 10 of the First Embodiment

For convenience, in this section of this text, the multi-function material moving assembly 10 of this embodiment will simply be called “the machine 10”. To describe the operations and versatility of the machine 10, several different situations will be considered.

To consider a first situation, let us assume that the task that is to be accomplished is the clearing of a forested site at which construction of some sort will take place or possibly preparation for some other function such as an athletic field. We'll begin by looking at the task of safely moving and/or removing some logs safely, and reference is made first to FIG. 10 which shows the manner in which the bucket 22 and the clamping member 24 grip a log 220.

Let us assume that the log 220 has been gripped and lifted and it is now desired to load it into a truck. However, the truck happens to be in an awkward position so that it first be necessary to rotate the log from the position of FIG. 11 to be in alignment with the truck bed. This is accomplished by rotating the bucket in a horizontal plane from the position of FIG. 11 to some other position, such as the position of FIG. 12.

Now let us take another instance where the log or tree has been dropped down and is laying on the forest floor with some of the limbs having been removed. The tree is to be moved out from among the trees and then to a vehicle or to stack it into a pile. In this instance, the machine 10 could engage and then lift the log while the bucket section 20 is aligned as in FIG. 12, and then it can be moved out of the surrounding trees by backing up the machine 10, carrying the log out in the direction of travel. Then the position of the tree could be moved to be in alignment with the bed of the truck into which it is to be placed or stacked on a pile.

Let us now consider a second situation where a standing tree is to be cut down, and it may be difficult to cause the tree to fall in the exact location desired. In this instance the machine could go to the position of FIG. 13 and grasp the the truck of the tree in the bucket section 20. The woodsman would then make the cuts at the lower end of the trunk of the tree and then the tree could be held vertically by the machine 10 until it could be moved to another location and then down to a more level location to cut off the limbs, etc.

Let us take yet a third situation where it is necessary to bring in a temporary power line for the project and it is desired to place a pole in vertical alignment and secure it in that alignment. The machine 10 could be used to dig a hole in the ground, and several stabilizing cables or lines could be secured to what is to be the top end of the pole. Then with the hole having been dug, the machine could move the pole to a vertical position with the bottom end positioned in a stationary location in the hole. The cables could be made taut to keep the pole vertical, and the machine could release its grip on the tree and fill the hold to further stabilize the pole.

To turn our attention now to a fourth situation with reference to FIG. 14, this shows the machine 10 in a conventional position where it can simply dig a ditch in the dirt by operating the bucket section in the normal manner that is expected of a backhoe.

Now we will look a fifth situation, with reference to FIGS. 15 through 17, and this is where some clearing has taken place and it is now desired to smooth out the surface. The machine can be placed in the position of FIG. 15 (as shown in full lines), and the open chamber of the bucket 22 is facing laterally. Then the entire cab section 44 can be rotated about its vertical axis to swing the boom 14 in a sweep over the surface, with the lower front edge of the bucket 22 scraping the ground. The manner in which this could be done is illustrated in FIG. 16.

FIG. 17 illustrates a situation where the machine 10 itself is placed on a ground surface where it is at a slant, and it is desired to have an area to be either dug out or smoothed out. Therefore, the boom 14 could be placed in a position shown in FIG. 17, and the boom 14, the arm member 16 and the slant of the bucket as well as its vertical position could be controlled to obtain a level ground surface.

Now our attention is directed to FIGS. 18, 19 and 20 to describe a sixth situation. FIG. 18 illustrates the bucket 22 lifting a large amount of material in its usual operation. FIG. 19 illustrates the manner in which the clamping member 24 could be used to control the discharge of the earth in the bucket.

Then FIG. 20 illustrates a situation where the bucket is being used to make a quite smooth surface (as in FIGS. 16 and 17), and it is desired to remove most all of a small pile of remaining dirt. When there is that final small amount of dirt remaining, it is often difficult to collect it in the bucket by itself, However, the clamping member 24 can be used to come down and push that last amount of earth into the bucket.

g) A Second Embodiment of the Invention

This second embodiment will now be described with reference to FIG. 21. Components of this second embodiment which are similar to components of the first embodiment will be given like numerical designations, with an “a” suffix distinguishing those of the second embodiment. This second embodiment is particularly adapted to be used in a situation where work is to be done near or along a railroad track or a railroad right-of-way and other situations. In this second embodiment, it is possible for the multi-purpose assembly 10a to travel over a ground surface, and also to be able to be positioned on (and travel along) the two rails of a railroad track. In the following text, for convenience, the assembly 10a will be referred to as the “machine 10a” or as the “second embodiment”.

By way of introduction, components of this second embodiment are in large part identical to (or substantially the same as) most all of the components which are shown in FIG. 1, with the exceptions being the base section 45, the locomotion section 46, and the overall manner in which the locomotion section 46 functions. Aside from that, the remaining components that are shown in FIGS. 1 through 20 are, or may be, also present in this second embodiment in the same/or similar configuration.

It can be seen in FIG. 21 that only the lowermost portion of the cab 44a is shown. This is done with the understanding that the full cab 44a is the same as, or similar to, what is shown in FIG. 1, including its vertically aligned axis of rotation 48a. Further, it is to be understood that the following components that appear in FIG. 1 are also to be present in this assembly 10a, FIG. 21, these components including: the boom 14, the primary arm member 16, and the entire bucket assembly 18. Further, all of the other components associated with these, such as the actuators 54 and 60, etc., are also part of the second embodiment of FIG. 21.

There will first be a description of the components of the second embodiment of FIG. 21 that are also present in the first embodiment, in some modified form. First, there is the cab 44a mounted to the base 45a. The base 45a is (or can be) basically the same as in the first embodiment, except for “add-on” features for the base section 45a. Then there is the locomotion system 46a which is substantially the as in the first embodiment with respect to the two ground engaging tracks 47a, and these are (or may be) the same (or similar to) the tracks 47 of the first embodiment. However, the locomotion system 46a differs in that it also comprises a railroad track engaging section to be described later herein.

To describe now the base section 45a in more detail, reference will now be made to FIG. 21. The base section 45a comprises top, bottom, front and back frame portions 224a, 225a, 226a and 227a, respectively. Each ground engaging track 230a comprises a lower track run 231 a, and upper track run 232a, a front 90 degree track curved portion 234a, which is driven by a sprocket 236a, and a rear track portion 238a which (as shown in this embodiment) has an idler sprocket 240a. Also, there are intermediate guide rollers or sprockets 242a. In an alternative configuration the rear sprocket 232a could also be a drive sprocket.

These components which have been described so far (i.e., 223a through 242a) already are present in the first embodiment. Now we shall proceed to describe the components which are new in this second embodiment.

To proceed further now with a description of this second embodiment, the operating assembly 10a of this first embodiment comprises a combined locomotion system 46a which comprises:

• • i) the aforementioned ground engaging track locomotion section 43a, and
  • ii) a rail engaging wheel locomotion section 250a (mentioned briefly earlier in this text).

It is believed that the ground engaging track locomotion section 43a is described above sufficiently, so there will be no further description of this section 43a at this time.

To describe now the rail engaging locomotion section 250a, this section 250a comprises a wheel section 252a which in turn comprises forward and rear wheel sets 254a, each of which comprises two laterally spaced wheels 256a. There is a rear wheel mounting section 258a which in turn comprises front and rear mounting subsections 260a. Each mounting subsection 260a in turn comprises a base mounting section 262a which in turn comprises front and a rear base connecting mounting structures 264a. As their name implies, these base mounting structures 264a are fixedly connected by a base connecting portion 265a to the base 45a. Each base mounting structure 264a has at its outer end portion two connecting pivot locations 266a and 268a.

Each rail wheel mounting subsection 260a further comprises a wheel support member 270a which is in the form of an elongate arm, having a base pivot connections 272a at the lower pivot connecting locations 266a. The opposite end of each wheel support member 270 is fixedly connected to a wheel support structure portion 274a, in which the related wheel 256a is rotatably mounted.

Then there is for each set 254a of wheels 256a a wheel positioning member which is in the form of a hydraulic actuator 276a which is shown only schematically by a broken line indicated at 276a. This actuator 276a has a base connecting portion 278a that connects pivotally to the pivot location 268a of the base mounting structure 264a, and a second pivot connection at 280a to the wheel support structure portion 274a.

In FIG. 51, the forward set of wheels 254 at the left in FIG. 1 and its mounting structure 264a are shown in the raised position where the hydraulic actuator 276a has been retracted, and it can be seen that the forward set of wheels 254a is raised to an upper location. Then on the rear part of the rail engaging locomotion system 250a, the rear wheel set 254a is in its lower rail engaging position, this being accomplished by extending the rear hydraulic actuator or actuators 276a.

Therefore, when it is desired to operate the multi-purpose assembly 10a in its ground engaging mode of operation, the hydraulic actuators 276a are retracted to move the front and rear set of wheels 254a to the raised position. Then when the multi-purpose assembly 10a is to be located over the rails of the rail track system, the two hydraulic actuators 276a are extended to move the front and rear wheel sets 254a downwardly to engage the rails and raise the assembly 10a so that the ground engaging locomotion section 43a is raised above the level of the rails of the railroad track.

There will now be a description of the hydraulic drive section of the locomotion section 46a of the second embodiment. This will be done by first describing the hydraulic drive system of the first embodiment and the hydraulic system of the second embodiment. In doing so, reference is made to FIGS. 22A and 22B which show, respectively, the hydraulic drive system of the locomotion section of the first embodiment 10 and then the hydraulic drive section of the second embodiment.

The reason for this is that the hydraulic drive system of the second embodiment is a derivation of the first embodiment, and it is believed that a clearer understanding of the hydraulic drive section of the second embodiment will be obtained by first examining the schematic diagram of FIG. 22A which shows the hydraulic drive system of the first embodiment and then moving on the FIG. 22B and the description of the hydraulic drive section of the second embodiment.

To again turn our attention to FIG. 22A, there is shown the hydraulic drive system 280 of the ground engage locomotion of the first embodiment, and this comprises a hydraulic power supply 282 of the first embodiment. This power supply 282 in turn comprises a pump 284 and a reservoir 286.

This drive system 280 comprises left and right power sections 288 and 290, with the left power section 288 driving the left sprocket 236 that in turn connects to the left ground engaging track 230, and the right power section 290 doing the same for the right sprocket 236 and the right ground engaging track 230.

Each of the left and right power sections 288 and 290 comprises a four-way fluid distribution valve section 292 which in turn selectively transmits the hydraulic fluid to its related hydraulic motor 294 that connects to its related sprocket 236. To accomplish this, there is a primary supply line 296 that delivers hydraulic fluid to its distribution valve 292, and there are two distribution hydraulic lines 298 and 300 which connect between the distribution valve 282 and the motor 294.

The distribution valve 292 has three operating positions. There is a first operating position where the valve 292 directs the fluid into the motor supply line 298, with the hydraulic fluid being discharged form the motor and into the other supply lines 300 which directs the fluid back to the distribution valve 292. The distribution valve 292 then directs the liquid through a return line 302 to the reservoir 286.

In the second position of the distribution valve 292, the fluid flow is reversed, in that the hydraulic fluid is directed from the hydraulic power supply 282 through the distribution valve 292 and into the supply line 300 which in turn directs the fluid to the motor to turn the motor 294 in the opposite direction to cause the drive sprockets 236 to reverse its direction so as to drive the track 230 in the opposite direction.

Then there is a third position for the distribution valve section 292 where the hydraulic fluid from the hydraulic power supply 282 passes into and through the distribution valve section 292 and is returned directly back to the return line 302 to the reservoir 286. In many systems, when the valve 292 is in the third position the motor 294 goes to a locking position to prevent rotation of the sprocket 236.

The right power supply section 290 operates in the same manner as described above with regard to the left power section 290.

Also, there are shown in FIG. 21A left and right control levers 304 and 306. If these two levers 304 and 306 are pushed forward, they cause both left and right distribution valves 292 to move to the first position where both sprockets 236 are driven in a forward traveling direction. Then when the two levers 304 and 306 are moved rearwardly, these cause the distribution valve section 292 to move to the second position to cause both of the drive sprockets 236a to rotate in the reserve direction.

Then when it is desired to execute a left hand turn, the right control lever 306 is moved to a forward location, and the left control lever 304 is moved forward to a lower power setting so that the left sprocket 236 rotates more slowly, or to a non-turning position where the machine executes the turn at substantially the same location. Obviously, a right turn can be made in a similar manner. Also, by manipulating the lever arms 304 and 306, the machine 10 can back up in a straight line path or a curved path where the curve is one way or the other.

With the foregoing description of the hydraulic drive system 280 of the first embodiment having been described, let us now turn our attention to FIG. 22B which discloses the hydraulic drive system 250a of the second embodiment. As indicated above, this hydraulic drive system 280a of the second embodiment is an adaptation from the hydraulic drive system 280 of the first embodiment, so that many of the components in the hydraulic drive system shown in 280A will be the same as, or similar to, those of first embodiment. Also, as is done earlier in this text, components of this second embodiment which are the same as, or similar to, components of the first embodiment will be given like numerical designations, with an “a” suffix distinguishing those of the second embodiment.

Thus, in this second embodiment as shown in FIG. 22B there is the hydraulic power supply 282a, comprising the pump 284a and the reservoir 286a, and the left and right power sections 288a and 290a. Also, there are the two distribution valve sections 292a and each of these receive hydraulic fluid from the line 296a and also connect to the return line 302a. Further, there are the two drive sprockets wheels 236a, and these have their two drive motors 294a along with their connecting lines 298a and 300a.

Now to discuss the components which are added to comprise this second embodiment, first there are the two rail wheels 256a, each driven by a hydraulic motor 310a, each having two rail motor supply lines 312a and 314a. There are the two mode selecting valves 316a, each of which has three sets of connections. First each mode selecting valve 316a is connected through the lines 312a and 314a to the motors 310a for the rail wheels 256a. Second, there are also connections to the two lines 298a and 300a that connect to the motors 294a to the drive sprockets 236a. Third, there are connections through the two lines 318a and 320a connected directly to the distribution valve sections 292a.

To turn our attention back now to the mode selecting valves 316a in this embodiment, each mode selecting valve 320a is a six port valve which has two operating positions. In a first operating position, the two transfer valves 320a have a through connection from the distributor valve 292a through the lines 298a and 300a to the motors 294a for drive sprockets 236a.

In a second operating position, each mode selecting valve 316 makes a through connection from the lines 318a and 320a to the rail motor supply lines 312a and 314a to drive the two rail motors 310a.

Now we turn our attention to the two control levers 304a and 306a. In the particular arrangement of this second embodiment, these are physically clamped together by a clamp member 330a (shown schematically in FIG. 22B) so that the two levers 304a and 306a move together to either a forward position or to a rear position. This clamp 330a is put in place to connect to the two levers 304a and 306a when the second embodiment 10a is in its rail traveling mode. However, when the rail wheels 256a are raised so that the ground engaging tracks 47a are in ground engagement, with the rail wheels 256a out of engagement with the rails, the clamping member 330a is removed so that the machine can move over the ground making turns, etc., as described previously herein.

To summarize the steps which the operator would take in operating the machine 10a in its two different modes, let us assume that the machine 10a is in its ground engaging mode of operation where the rail wheels 256a are raised and the ground engaging tracks 47a are thus in their ground engaging position. In this instance, as indicated above, the two operating levers 304a and 306a are not clamped together and are able to move independently of one another as described earlier in this text where the operation of the first embodiment was described.

In this ground engaging position, the two mode selecting valves 316a are positioned in their ground operating mode position. In this position, the fluid flow paths through the distribution valves 292a connect with the two sets of lines 318a and 320a which connect the selecting valves 316a and to connect with the related motors 294a for the track drive sprockets 236a.

Then, when the mode selecting valve 316a is moved to its rail engaging mode, the flow paths through the same distribution valve sections 292 and then through the mode selecting valves 316a. However, the flow is through a different set of ports in the mode selecting valves 316a so that the liquid flow is to and from the motors 310a to drive the rail wheels 256a.

To discuss now the overall flow pattern of the drive section 280a, let us assume that the machine 10a is in its ground engaging position so that the ground engaging tracks 47a are in engagement with the ground, and that the machine 10 is to move in a forward direction. The two levers 304a and 306a would be pushed forwardly to the forward moving position, and this would in turn move the distribution valves 292a to their forward traveling position so that the fluid flow from the pump 284a is through the lines 296a to pass through the distribution valves 292a to the mode selecting valves 316a. At that time the mode selecting valves 316a would be in its ground engaging mode, so that the flow from the lines 318a would pass through the mode selecting valves 316a and through the lines 298a and into the motors at 294a to drive the sprockets 236a in the forward traveling direction of rotation. Then the flow from each motor 294a would be on a return path through the line 300a then through the mode selecting valve 316a to the ground engaging return line 320a and through the selector valve 292a to flow through the return line 302a back to the reservoir 286a.

If the operator is to place the machine 10a in reverse so as to move backwards, then the two levers 304a and 306a will be moved rearwardly to the backing up position, and the flow pattern would remain basically the same, but with the direction reversed. Thus, the flow toward each motor 294a would be through the line 296a, through the distribution valve 292a through the line 320a, then through the mode selecting valve 316a, and through the line 300a to enter into the motor 294a to drive the sprocket 236a in the opposite direction, and then follow a return path through lines 300a, 320a and 302a to return to the reservoir 286a.

Let us now consider the situation where the machine 10a is to be in neutral. Then, as in the operation of the first embodiment 10, the levers 304a and 306a are moved to the neutral position so that the flow is through the lines 296a to the distribution valves 292 and then through the lines 203 to the reservoir 286a.

Now let us assume that the operator has moved the machine to a location over the railroad tracks where it is going to be in its rail engaging mode of operation. The two sets of rail wheels 256 would be moved downwardly to the rail engaging position to lift the ground engaging tracks 47a to a higher level. Then the procedure would be substantially the same as the procedure followed in the ground engaging mode except that the rail wheels 256a are being driven instead of the sprockets 236a.

To return to the steps taken by the operator of the machine 10a, if it desired to transition now from the ground engaging mode to the rail engaging mode of operation, the operator would move the mode selecting valves 316a to the rail engaging position. This could be done either by manually moving each of the valves 316a or operating a valve control mechanism in the operating position of the cab 44a. Then the operator would set the aforementioned clamp 330a in its lever engaging position so that the two levers 304a and 306a are locked into each so that they will move together to the various operating positions. Then the procedures would follow as described above. Then the operator of the machine 10a would have the same “feel” of the operation of levers 304a and 306a.

In this particular embodiment, the power drive section 280a is dedicated totally toward the locomotion of the machine 10 either in its rail engaging mode of operation or its ground engaging mode of operation. The hydraulic power that is needed for moving the various actuators, rotating the cab 44a, etc., could be derived from another hydraulic system. Alternatively, there could be a common power source which would serve all of the functions of the machine.

Also, if it is desired to drive all four rail wheels 256a, the motors 310a on each side would be connected in series in the hydraulic drive system. The same could be done with the sprockets 236a.

Now to discuss the operational features of this second embodiment, let us consider the situation where the assembly 10a of the second embodiment could be effectively used. Let us assume there is some work to be done in the vicinity of a railroad track where certain repair work must be done on the rail track or possibly new rails are being installed. There could be a wide variety of chores to be accomplished. First, there is a requirement for the removal and/or adding and/or repositioning of various material such as dirt, gravel or other fill, etc. The movement of various ground material may be more conveniently accomplished with the ground engaging locomotion system in its operating position with the rail which sets 254a raised.

Also, there needs to be the placement of railroad ties, or possibly installation of some lengths of the rails themselves. With the machine 10a being able to lift elongate pieces and orient them at different locations, it would be a simple task for this to be accomplished by the machine 10. To consider a rather effective way of accomplishing this, the machine 10, instead of operating on its ground engaging section 43a, could be moved to a position over the rails and then lower its rail wheels to the rail engaging position.

Let us assume, for example, that there are two continuous steel rails which extend over a relatively long distance, and the rear portion of these rails have been laid in their final location along the railroad right-of-way. The portions of the rails that are forward of the location of the machine 10a would slant from the rail path off to the side in a very moderate curve leading away from the center to a side location. With the machine 10a being mounted on the rail portions already in place, the machine 10a could progress down the track, stopping at spaced locations, and gripping each rail and realigning that portion of the rail to its end alignment position. When this is accomplished with two adjacent portions of the rail, then the machine 10 could move a distance further on the track and accomplish the same task and do this repeatedly.

With regard to excavating or depositing material on the track location itself, this would not be a difficult task in the rail mounted location. However, in addition to this, it sometimes happens that it is necessary to grade the ground that is off to one side of the track. The ground adjacent to the track may be slanting downwardly and away from the track. On the other hand, if one side of the track is on or next to a hillside, then it may be necessary to do some grading on one or both of these slopes.

The bucket 20a could be rotated ninety degrees from its front facing position so that the open face of the bucket is facing horizontally toward the path of travel. Also the boom 14a and arm member 16a could be used to locate the bucket assembly 18a to be in proximity to the slope to be graded. Then the bucket could be rotated about the bucket axis of rotation 35a so that the front edge of the bucket could be placed at the appropriate angular orientation. The cab 44a would have been rotated about its axis 42a so that the vertical plane within which the primary support member 16 and the boom 14 move could be slanted either forwardly or rearwardly, thus changing the directional orientation of the open face of the bucket 22a. This would allow various slants of grading to be accomplished along side surfaces. Thus, these multiple functions could be accomplished by one machine 10.

It is evident that various modifications could be made to the present invention without departing from the basic teachings thereof.

Claims

1. A bucket assembly adapted to be mounted to an operating support member at a connecting location of the operating support member for movement about a bucket pivot axis and for rotational movement for different bucket orientations, said apparatus comprising:

a) a bucket section having a longitudinal bucket axis, a transverse bucket axis, and a vertical bucket axis generally perpendicular to the longitudinal and transverse bucket axes, said bucket section comprising: i) a bucket comprising a bucket structure which in turn comprises front, rear, side and bottom wall portions defining a containing area and having an upwardly facing open region; ii) a clamping section which is mounted to said bucket and which comprises a hydraulic actuating section which is mounted in the bucket assembly and which moves the clamping section between an open position and a closed position;

b) an intermediate connecting section comprising: i) a structural support section which comprises a bucket connected support section and an operating support member connected support section connected to, or adapted to be connected to, said operating support member, said two support sections being rotatably connected to one another in load bearing relationship and for rotation relative to one another about a generally longitudinally aligned bucket axis of rotation, said bucket connected support section being connected to said bucket section so as to be rotatable therewith, and said operating support member connected section not being rotatably connected to said bucket section; ii) a fluid supply and distribution section arranged to deliver hydraulic fluid to and from said hydraulic actuating section of said clamping section, said fluid supply and distribution section comprising a first fluid carrying section which comprises a bucket related fluid carrying section having a first rotary fluid connecting section which is located in alignment with the bucket axis of rotation, is associated with the bucket assembly so as to be rotatable therewith, and which has fluid connections between the bucket rotary fluid connecting portion and the hydraulic actuating section of the clamping section; and a second fluid carrying section which is an operating support member connected support section related fluid carrying section which has a second rotary fluid connecting section that is also in alignment with the bucket axis of rotation, and that is not rotatably associated with said bucket assembly, said first and second rotary fluid connecting sections being in operative engagement with one another so that the first and second rotary fluid connecting portions are able to rotate about the bucket axis of rotation relative to one another as said bucket assembly is rotated to various orientations and fluid is able to pass to and from said first and second fluid carrying sections;

c) a drive section to rotate said bucket section and said bucket connected support section relative to said operating support member connected support section about said bucket axis of rotation.

2. The bucket assembly as recited in claim 1, wherein, said bucket structure has an upper edge portion defining at least in part said upwardly facing region, and said clamping section comprises two side members and a front member having a closed position adjacent to upper edges of said bucket structure.

3. The assembly as recited in claim 2, wherein said clamping section is mounted to said bucket section for rotation about a generally transverse pivot axis and said hydraulic actuating section is positioned rearwardly of said bucket structure.

4. The assembly as recited in claim 1, wherein said bucket axis of rotation is coincident with the longitudinal axis of said bucket section.

5. The assembly as recited in claim 1, wherein said structural support section comprises a rotary bearing section having inner and outer bearing races, one of said bearing races being connected to the bucket connected support section, and the other of said bearing races being connected to the operating support member connected support section.

6. The assembly as recited in claim 5, wherein said outer race bucket section is connected to said bucket support section.

7. The assembly as recited in claim 5, wherein said rotary bearing section has a load bearing plane which is substantially perpendicular to said bucket axis of rotation and is located at a region of load bearing contact of an intermediate bearing member portion located between the outer and inner bearing races, and loads transmitted between said bucket connected support section and the operating support member connected support section are substantially isolated from said fluid supply and distribution section.

8. The assembly as recited as claim 7, wherein said drive section comprises a rotary drive section operatively connected between said bucket connected support section and said operating support member connected support section, and said rotary drive section comprises a circumferential drive gear which is connected to the bucket connected support section and a worm drive which is connected to the primary arm member connected support section.

9. The assembly as recited in claim 1, wherein said bucket connected support section and said operating support member connected support section have aligned openings substantially coincident with the bucket axis of rotation and at least a part of said fluid carrying section is located in at least some of said openings.

10. The assembly as recited in claim 1, wherein said fluid carrying section comprises a fluid distribution member which has at least two longitudinally aligned supply passages which extend through the fluid distribution member and are adapted to be connected to a hydraulic drive source, a forward portion of said fluid distribution member comprising a rotary fluid connection by which fluid is directed to and from said fluid distribution member and to and from said hydraulic actuating section.

11. The assembly as recited in claim 1, wherein at least a portion of one of said rotary fluid connecting sections surrounds at least a portion of the other of said rotary fluid connecting sections, and a fluid connection comprises at least a pair of circumferential spaced distribution grooves connecting to fluid ports.

12. The assembly as recited in claim 1, wherein said structural support section comprises a rotary bearing section having inner and outer bearing races and a bearing portion positioned between said inner and outer races, one of said bearing races being connected to the bucket connected support section, and the other of said bearing races being connected to the operating support member connected support section, and there is a rotary drive section which comprises a drive gear that is connected to the bearing race which is connected to the bucket connected support section, and a worm gear drive that is connected to the operating support member connected support section.

13. The assembly as recited in claim 12, wherein said operating support member connected support section comprises at least two operating support member connecting locations which are spaced from one another and adapted to be connected to said operating support member to enable said bucket assembly to be moved angularly about said bucket pivot axis to various operating positions, and to enable a force to be applied from said operating support member to enable said rotation about said bucket pivot axis.

14. The assembly as recited in claim 1, wherein said operating support member connected support section comprises at least two operating support member connecting locations which are spaced from one another and adapted to be connected to said operating support member to enable said bucket assembly to be moved angularly about said bucket pivot axis to various operating positions, and to enable a force to be applied from said operating support member to enable said rotation about said bucket pivot axis.

15. The assembly as recited in claim 13, wherein said bucket connected support section comprises a substantial unitary rigid bucket structure and said operating member connected support section comprises a substantially rigid structure, said structural support section being arranged so that loads from the bucket section are transmitted primarily through the bucket connected support section to a rotary load bearing structural connection, and into the operating support member connected support section which is able to transmit these loads directly into load bearing members of an operating support member.

16. The assembly as recited in claim 1, wherein said bucket connected support section comprises a substantial unitary rigid bucket structure and said operating member connected support section comprises a substantially rigid structure, said structural support section being arranged so that loads from the bucket section are transmitted primarily through the bucket connected support section to a rotary load bearing structural connection, and into the operating support member connected support section which is able to transmit these loads directly into load bearing members of an operating support member.

17. A method of providing and using a multi function bucket assembly, said method comprising:

a) providing a bucket section having a longitudinal bucket axis, a transverse bucket axis, and a vertical bucket axis generally perpendicular to the longitudinal and transverse bucket axes, where said bucket section comprises: i) a bucket comprising a bucket structure which in turn comprises front, rear, side and bottom wall portions defining a containing area and having an upwardly facing open region; ii) a clamping section which is mounted to said bucket and which comprises a hydraulic actuating section which is mounted in the bucket assembly and which moves the bucket between an open position and a closed position;

b) providing a structural support section which comprises a bucket connected support section and an operating support member connected support section and connecting said two support sections rotatably to one another in load bearing relationship and for rotation relative to one another about a generally longitudinally aligned bucket axis of rotation;

c) connecting bucket assembly connected support section being said bucket section so as to be rotatable therewith;

d) connecting said operating support member connected section to an operating support member at a connecting location of the operating support member for movement about a bucket pivot axis;

e) providing a fluid supply and distribution section to deliver hydraulic fluid to said hydraulic actuating section, where said fluid supply distribution section comprises a fluid carrying section positioned in said structural support section, with at least a portion of said fluid carrying section being centered on said axis of rotation in the bucket assembly connected support section and not being rotatable therewith;

f) providing a rotary fluid connection with a fluid connection portion of the hydraulic actuating section of the clamping section so that there are hydraulic fluid flow paths between the operating support member connected section and the hydraulic actuating section of the bucket connected support section;

g) providing a drive section to rotate said bucket section relative to said operating arm member connected support section and operating said drive connection to cause movement of said bucket assembly about said bucket pivot axis; and

h) providing a hydraulic fluid supply source and selectively directing hydraulic fluid through said fluid supply and distribution section to the hydraulic operating system to operate the clamping member.

18. A mobile material moving machine comprising:

a) a base structure having a longitudinal, transverse and vertical axis;

b) a cab mounted to said base structure for rotation about a vertical cab axis of rotation;

c) an operating support section mounted to said cab;

d) a bucket assembly mounted to, or capable of being mounted to, said operating support section;

e) a locomotion section connected to said base section and comprising; i) a ground engaging track locomotion section; ii) a rail engaging wheel locomotion section; iii) a height adjustment section which adjusts relative height locations of the two locomotion sections so that one or the other of the locomotion section is positioned in an operative ground or rail engaging position whereby said machine is capable of performing mobile operations from either a ground or a rail location.

19. The machine as recited in claim 18, further comprising a locomotion hydraulic drive system, said system comprising:

a) left and right track drive members, each of which is driven in forward and reverse by left and right track drive motors respectively;

b) left and right rail wheels, each of which is driven in forward and reverse by left and right wheel motors respectively;

c) left and right track drive power supply sections to provide hydraulic power to the left and right track drive motors, respectively, either in a forward drive mode or a reverse drive mode; and

d) left and right rail wheel power supply sections to provide hydraulic power to the left and right rail wheel drive motors, respectively, in either a forward drive mode or a reverse drive mode.

20. The machine as recited in claim 19, further comprising a locomotion power control and distribution system, said system comprising: whereby the same locomotion power control and distribution system with a common operating control section can be utilized for the operation of the machine in either its ground engaging track locomotion mode or its rail engaging wheel locomotion mode.

a) an operator control section comprising left and right control members, each having forward, reverse and neutral positions;

b) left and right distribution valve sections, each of which is responsive to said operator control section to direct hydraulic fluid either in a forward flow direction, reverse flow direction or bypass flow; and

c) left and right mode selecting valve sections for selection of either a ground engaging track locomotion mode or a rail engaging wheel locomotion mode, each of which is arranged to direct flow from the left and right distribution valve sections, respectively, to either the rail wheel motors or the track drive motors,