Abstract: This invention relates to a box section made of an upper and lower plate and side plates. The upper and lower plates and the side plates thus form a weldment. According to the invention, provision is made for the interior of the box section to be accessible from the outside through multiple cutouts that are arranged in the longitudinal direction of the excavator boom in the side plates and/or in the upper and/or lower plates.

Abstract: A lift arm having a plate-like structure that is capable of taking a large load is realized without increasing a plate thickness and at low cost. The structure with required strength and of low cost is realized by a simple construction and achieves, at the same time, both weight lightening of a loader and sufficient load bearing performance. In a loader (2) of a working machine (1), connection sections between a cross member (176) and lift arms (171) are each formed in a shape broadening from the cross member (176) toward a lift arm (171). Further, reinforcement plates are attached to outer surfaces of a front loader (2) so as to overlap the connection sections between the cross member (176) and the lift arms (171). Contact members (171b, 171b) are attached to lower side faces at the heads of the lift arms (171) to restrict the amount of rotation of a working device installed on the heads of the lift arms (171).

Abstract: A control apparatus for a bucket loader allows a single linear actuator to provide multiple operative functions for the bucket loader. A selector link is pivotally mounted on the back plate of loader bucket to selectively connect the back plate to the base portion of the linear actuator so that the extendable portion powers a pivoting of the bucket shell to dump material from the bucket, or connect the back plate to the extendable portion of the linear actuator to power the vertical movement of the back plate. A chain interconnects the extendable portion of the linear actuator and the pivotable bucket shell to power the pivoting of the bucket shell when the selector link is connected to the base portion. The bucket shell can be mechanically locked into an open position to allow the back plate to be utilized as a push blade.

Abstract: A lift arm for a skid-steel loader, in which a pair of right and left lift arms are divided in two so that they are constituted as first arm portions and second arm portions. Each of the first arm portions is constituted as a long member which is constituted from a sheet metal material and a hollow portion is formed from a proximal end to a front end of the first arm portion. Reinforcing plate-shaped bodies are fixed on both side faces from a central portion to the front end. Each of the second arm portions is constituted from a plate-shaped body and constituted between a front wheel and a loader main body so as to be inserted loosely. With this structure, it is possible to provide the lift arm which enables an entire length of the skid-steer loader to be shortened.

Abstract: A directional bushing is provided for a pinned joint of an articulated structure such as a front end loader used with a work vehicle. The bushing has an annular ring portion and an oblong flange portion. The flange portion extends angularly outward from one side of the ring portion so as to form a wider rounded end. The flange portion is thicker at the area adjacent to the ring portion so as to provide additional support to the ring portion under load, and tapers to a more thin profile at the rounded end. The bushing is surface welded to the structure at the pinned joint with the flange portion oriented in the direction of the greatest load when the structure is articulated, so that the load is more evenly distributed over a wider area, thereby preventing weld failure.

Abstract: A removable and attachable debris guard for a back wall of a loader bucket or a bulldozer blade is provided with a frame that is a generally inverted U-shape with outwardly tapering side legs, and has a strong mesh screen supported on the frame. The frame includes a cross plate that extends rearwardly of the mesh screen and has attachment hooks for fitting over a top rail of a back wall of a loader bucket. The frame includes brackets for securing the legs to a forward side of the back wall.

Abstract: A bucket used in association with a loader provides both top and lateral discharge. The bucket is defined by a frame with front and rear walls, as well as a pair of side walls, and an endless loop of conveyor belt that serves as a bottom to the bucket. Lateral discharge provided through a gap between the endless loop and each of the side walls. A slide at a bottom of each side wall at least partially fills the gap between the side wall and the endless loop. The endless loop is selectively driven in the direction of either of the side walls by a drive means contained within the frame.

Abstract: A bale mover is disclosed which includes a frame having a hitch mounted thereon which may be attached to the three-point hitch of the tractor or to the front end of a front-end loader mounted on the tractor. The frame includes a transversely extending tool bar or main frame member having first and second upstanding posts secured to the outer ends thereof. A pair of tooth supports are vertically slidably mounted on the first and second posts respectively with chains being attached thereto which limit the downward movement of the teeth supports but which permit the tooth supports to float upwardly on the posts as required. The bale mover permits a pair of bales to be loaded, transported and unloaded without the necessity of pushing one of the bales along the ground during the loading or unloading process of the other bale thereby preventing damage to the wrap net material on the bales.

Abstract: A method of constructing a boom assembly of a front end loader, including the step of providing connection of a first and second boom member 12, 14 with a cross bar 24 via a pair of shaped plates 30 which strengthen said connection while providing means for a hose to pass through said first or second boom to a location outside of said cross bar. Additional cabling plates can be provided, the additional plates providing a radiused duct 19.79 for the passage of a hose. The additional plates can include a passageway 19.71 for electrical wiring.

Abstract: A loader work machine includes: a first lift link (81) and a second lift links (82) disposed forwardly of the first lift link (81) for vertically pivotally supporting a base portion of an arm (77) at a rear upper portion of a machine body frame (1); an arm cylinder (79) provided between the base portion of the arm (77) and a rear lower portion of the machine body frame for lifting up/down the arm (77); a first link support shaft (85) for pivotally supporting a lower base portion of the first lift link (81) to the machine body frame (1); a second link support shaft (86) for pivotally connecting a base portion of the second lift link (82) to the machine body frame (1), at a position forwardly of the first link support shaft; a first arm support shaft (88) for pivotally supporting a base portion of the arm (77) to an upper free end of the first lift link (81); a second arm support shaft (89) for pivotally connecting a base portion of the arm (77) to a free end of the second lift link (82), at a position forwardl

Abstract: An apparatus for cleaning a culvert includes a rod pushing and pulling machine, a rod string made from a series of extension rods coupled end to end, which rod string is mounted at a proximal end to the rod pushing and pulling machine. A debris removal tool is mounted on a distal end of the rod string. The debris removal tool may comprises a rod having a center longitudinal axis, a proximal end, and a distal end, the rod having a coupling at its proximal end. A bucket is mounted at the distal end of the rod, which bucket has an end opening positioned so that movement of the bucket along the culvert scoops debris into the bucket.

Abstract: A work equipment boom is adapted to be attached at one end to a main body of a construction machine and attached at the other end to a work equipment arm, the work equipment boom includes a boom main component. The boom main component is integrally formed by expanding a tubular material. The boom main component has a proximal end portion and a distal end portion. The proximal end portion includes a first end part arranged to be disposed adjacent to the main body and has a shape which increases in horizontal width as it gets nearer to the first end part. The distal end portion includes a second end part arranged to be disposed adjacent to the work equipment arm and has a shape which increases in horizontal width as it gets nearer to the second end part.

Abstract: A wheel loader includes a bucket boom including a pair of left and right side members; a front frame to which the base ends of the pair of side members are coupled; and a boom cylinder of which a base end is coupled to the front frame and a distal end is coupled to the side members. A base-end interval between the pair of side members is smaller than a distal-end interval between the side members. A face section that inclines towards a middle as extending in an upwards direction is provided on the left and right extremities of the front frame. A mounting boss to which the base end of the boom cylinder is attached is provided on a lower side of the face section while a mounting boss to which the base ends of the side members are attached is provided on an upper side of the face section.

Abstract: A wide plate-like material (27), having thin and thick wall portions in a transverse direction, is prepared by alternately joining one of flat thin plates (28, 29) and one of thick corner plates (30) or thick plates (31). The wide plate-like material (27) is bent at and along right and left thick corner plates (30) and formed into a U-shaped structure (32) which is U-shape in cross section. Separately from the U-shaped structure (32), a plate-like member (33) is prepared by butt welding thick plates (35) to right and left sides of a thin plate (34). The plate-like member (33) is welded to a lower side of the U-shaped structure (32) by laser welding or the like to form a square tubular structure, which is in a square shape in cross section and serves as a major part of an operating arm.

Abstract: The present invention provides a lift assembly (10) for lifting an implement via an implement mount (70) relative to a vehicle, the lift assembly (110) including a boom arm (46) and a linkage system (32, 80, 76) for tilting the implement relative to the vehicle, the linkage system including at least one link member (32, 80, 76), the arrangement being such that said at least one link member (32, 80, 76) is substantially housed and or concealed within the boom arm (46).

Abstract: A bale tote implement for a skid steer vehicle including an elongated body having a plurality of openings. Each opening is configured to receive one or more fasteners and at least one of the openings is configured to receive a fastener to retain the implement in position on a bucket of the skid steer vehicle. The implement also includes a plurality of substantially hollow gathering teeth having a first end and a second end. The first end is substantially flattened and the second end includes a support dowel inserted therein. Slots are configured to receive the second end of the gathering teeth. U-shaped fasteners are positioned adjacent the second end and through at least two of the openings in the elongated body. The U-shaped fasteners apply a retention force on the second end and the support dowel to retain the teeth in position within the slots.

Abstract: A wood splitting grappler is provided which may grab debris, split debris and move the debris to a desired location such as a materials reducing machine for further processing or disposition.

Abstract: There is provided a boom assembly bent at the center in a longitudinal direction so as to form a round shape protruding upward when seen from the side, comprising; a front boom sub assembly (47), the front boom sub assembly constituting the front of the center in the longitudinal direction of said boom assembly; and a rear boom sub assembly (48), the rear boom sub assembly constituting the rear of the center in the longitudinal direction of the boom assembly, wherein the front boom sub assembly (47) and the rear boom sub assembly (48) are symmetric when seen from the side, and portions from the midway positions in the longitudinal direction of the front boom sub assembly (47) and the rear boom sub assembly (48) to the center in the longitudinal direction of the boom assembly (12) have upper surfaces of arc shape protruding upward when seen from the side, and portions from the middles in the longitudinal direction of the front boom sub assembly (47) and the rear boom sub assembly (48) to ends in the longitudin

Abstract: A saddle block assembly including a main body having a shipper shaft opening through the main body bottom end, and an eccentric pin opening in the main body top end, an eccentric pin received in an eccentric pin opening in the top end of the main body, and a wear plate support. The wear plate support has a pin receiving opening, the eccentric pin being received in the pin receiving opening. Wear plates are mounted on the bottom end of the wear plate support and are adapted to bear against the top of a dipper handle.

Abstract: A remote boom lock assembly is provided to secure a boom assembly supported on an agricultural vehicle or implement. The boom lock assembly is generally configured to move between a locked position and an unlocked position relative to the boom assembly as it is seated in a boom cradle structure mounted on the agricultural vehicle. The boom lock assembly includes a boom lock element mounted to the boom cradle structure, and an actuator assembly configured to selectively move the boom lock element from a locked position to an unlocked position. A remote switch is employed to control operation of the actuator assembly. The boom lock assembly further includes a spring configured to bias the boom lock element toward the locked position.

Abstract: Tool designed to be fixed at the end of the arm of a shovel. The tool includes a curvilinear blade formed by a portion of a straight cylindrical surface whose generating lines extend parallel to an axis of rotation of the tool on the arm. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.

Abstract: The present invention provides a boom and arm member of a construction machine excellent in weld zone fatigue strength and a method of improvement of its fatigue strength, that is, a boom and arm member of a construction machine superior in weld zone fatigue strength, the boom and arm member of a construction machine characterized in that toes of full penetrated weld zones of the boom and arm member have vibration strike marks, and a method of improvement of its fatigue strength. Preferably, the residual stress of the bottom surface of the vibration strike marks is a 10 MPa or higher compressive residual stress.

Abstract: A parallel support member is constituted by a pair of links that are respectively arranged on the left and right sides of a second boom. These links are connected between a first boom and a third boom. Thus, the second boom is moved to the left or right side by an offset cylinder. In this case, when one of the links pulls the third boom, the third boom, an arm, and a bucket can be moved toward the left or right side of a vehicle body to be parallel to the first boom. At this time, the links accept a force exerted in the pulling direction, but need not receive a force exerted in the compression direction, so that the cross sectional areas, the weights of these links can be reduced.

Abstract: An upper boom is constituted by a box member having a shape like a box that includes an upper flange, a lower flange, a left web and a right web, and bosses that are welded to both ends of the box member. Bent plate portions which are bent inward are provided at both ends of the left web, and bent plate portions are also provided at both ends of the right web. Reinforcement plates are positioned at an outside of the bent plate portions and welded between the left web and the boss, and reinforcement plates are also welded between the right web and the boss at an outside of the bent plate portions. With these bent plate portions and the reinforcement plates, a double structure can be provided in the vicinities of the bosses, and these portions can be reinforced.

Abstract: A boom assembly is bent at a longitudinal center portion thereof to present an upwardly convex shape. The assembly includes a front boom body and a rear boom body. The front boom body and the rear main body each includes a main body consisting essentially of a pair of right and left lateral plates and a top plate interconnecting upper edges of the respective lateral plates. The main body is formed with an upper face and a lower edge thereof being bent in a longitudinal direction thereof into an arc face having a predetermined radius of curvature. The front or rear main body further includes a bottom plate disposed downwardly of the top plate and between the right and left lateral plates. Each main body is formed by bending a plate member into a reverse U-shaped cross section and each bottom plate is comprised of a plate member provided separately from the plate member forming the main body.

Abstract: An expandable implement attachment selectively connectable to a vehicle and having a frame assembly, a first bucket member laterally fixed to the frame assembly and a second bucket member laterally moveable relative to the frame assembly to provide a bucket with an adjustable width.

Abstract: A portable vacuum implement for use with a skid steer vehicle has a frame, a skid steer mounting saddle coupled to the frame and a motor mounted to the frame. A vacuum pump mounted on the frame is coupled to the motor so that the motor drives the vacuum pump. A collection tank mounted on the frame is coupled to the vacuum pump so that the vacuum pump pulls a vacuum through the collection tank. A vacuum head is connected to the collection tank by a first hose for vacuuming debris at an excavation site.

Abstract: A lift arm having a plate-like structure that is capable of taking a large load is realized without increasing a plate thickness and at low cost. The structure with required strength and of low cost is realized by a simple construction and achieves, at the same time, both weight lightening of a loader and sufficient load bearing performance. In a loader (2) of a working machine (1), connection sections between a cross member (176) and lift arms (171) are each formed in a shape broadening from the cross member (176) toward a lift arm (171). Further, reinforcement plates are attached to outer surfaces of a front loader (2) so as to overlap the connection sections between the cross member (176) and the lift arms (171). Contact members (171b, 171b) are attached to lower side faces at the heads of the lift arms (171) to restrict the amount of rotation of a working device installed on the heads of the lift arms (171).

Abstract: A load-bearing three-dimensional structure including a skeletal structure formed by a sheet of material having a plurality of bend lines, each bend line including a plurality of folding displacements, wherein the sheet of material is bent along the bend lines into a box-section; and a reinforcing member configured for substantially surrounding a portion of the skeletal structure when bent into a box-section to reinforce the structural integrity of the skeletal structure. A method of manufacturing the three-dimensional structure is also disclosed.

Abstract: A work vehicle includes a pair of, right and left booms detachably attached to a vehicle body, an implement attached to leading ends of the booms and a stand for supporting the booms with the implement being placed on a ground surface when the booms are detached from the vehicle body. The stand includes a pair of, right and left stand members provided in correspondence with the right and left booms and a stand connecting member for interconnecting the stand members. Each stand member is attached to the boom corresponding thereto in such a manner that the stand is movable between a use position in which each stand member projects downwardly from the boom for supporting the boom and a non-use position in which each stand member extends along the boom.

Abstract: The invention relates to a bucket-, claw-, scraper-blade- or compacting-type attachment (1) which is intended to be fitted at one end (18) of a rock breaker (15) comprising a tool (17). The inventive attachment comprises: (i) means (7, 8, 9, 12) enabling the correct positioning thereof in relation to the rock breaker and the tool; and (ii) means (13, 14, 20) for fixing same temporarily and removably to the end of the rock breaker, without dismantling the tool (17).

Abstract: The cement hopper attachment includes a raised hopper supported atop two uprights extending from a rectangular base. The hopper has a forward mounted gate and cement chute. A hydraulic cylinder operatively connected to the skid steer's auxiliary hydraulic controls actuates the gate of the hopper. The shape and configuration of the hopper is design to provide an unobstructed view from the skid steer of the cement dispensed from hopper. The hopper attachment also includes a pair of retractable support wheels, which support the weight of the loaded hopper attachment and prevent rocking and tipping forward under the weight of the loaded hopper attachment.

Abstract: Disclosed is a mobile apparatus for earth moving and other operations, such as lifting and displacing loads. A frame is displaceable on wheels. An articulated operating arm is supported by the frame for carrying an implement, for instance a container, a digger bucket or wrecking hammer. One or more motors drive the wheels and move the operating arm. The operating arm consists of at least three articulations connected to each other for mutual pivoting on a lying axis. A control member such as a hydraulic cylinder is arranged between each pair of articulations. The third articulation has a greater length than the second one, such that when the articulations are folded against each other, the implement can be freely used at the free end of the first articulation. Thus, the last articulation can be transformed from an articulated arm into a single lifting arm.

Abstract: There is provided a boom assembly bent at the center in a longitudinal direction so as to form a round shape protruding upward when seen from the side, comprising; a front boom sub assembly (47), the front boom sub assembly constituting the front of the center in the longitudinal direction of said boom assembly; and a rear boom sub assembly (48), the rear boom sub assembly constituting the rear of the center in the longitudinal direction of the boom assembly, wherein the front boom sub assembly (47) and the rear boom sub assembly (48) are symmetric when seen from the side, and portions from the midway positions in the longitudinal direction of the front boom sub assembly (47) and the rear boom sub assembly (48) to the center in the longitudinal direction of the boom assembly (12) have upper surfaces of arc shape protruding upward when seen from the side, and portions from the middles in the longitudinal direction of the front boom sub assembly (47) and the rear boom sub assembly (48) to ends in the longitudin

Abstract: A non-articulated boom extension is designed to be attached to the moveable support arm of a skid steer loader or similar construction vehicle, to increase both horizontal and vertical reach capabilities of the vehicle. The boom extension is formed with two longitudinally extending rigid arm members which are immoveably connected at an obtuse angle in relation to each other. An intermediate support section is secured to both arms to maintain a rigid connection, thus insuring that the extender, at all times, maintains this advantageous configuration. The boom extension has a base at the end of one of its arm members which allows the extension to be pivotally connected for angular adjustment with the support arm of the vehicle. At the other end of the boom extension, there is a connection for attaching an auger, hook, or other work-related apparatus.

Abstract: A bucket has a pair of longitudinally parallel and spaced apart pins for attaching to a pin grabber quick coupler. The pins may require removal from the bucket for repair or replacement if the pins are damaged. One or more windows are formed in the side of the bucket for facilitating access to and the removal of the pins from the bucket.

Abstract: The invention provides a bale handling apparatus capable of being used to lift and transport two similar bales in a substantially side-by-side manner. The apparatus includes at least two vertically and horizontally offset main spears. Each main spear is grouped with at least one vertically and/or horizontally offset stabilizer spear. By virtue of the offset design of the main spears, the apparatus can be used to load two bales sequentially by lifting a first bale and then lifting a second bale without unloading the first bale from the apparatus. The apparatus can also be used to load two bales simultaneously. The two bales can then be transported together to another location and unloaded from the apparatus sequentially or simultaneously.

Abstract: In the design of load bearing members for use in work machines, it is oftentimes beneficial to minimize the weight of such structures which, in turn, may allow for increased payloads and decreased cycle times of the work machine. A load bearing arrangement for use with a work machine of the type having a platform is provided. The load bearing arrangement comprises a plurality of pieces connectable to form a member structured and arranged for pivotable attachment to the platform. A weldment connects at least two of the pieces where at least one weldment is simulated for effects of heat on at least one of the pieces subject to the weldment.

Abstract: The lifting frame with Z-kinematics of a wheel loader comprises an accessory arm with a lifting cylinder coupled to the vehicle frame or to the truck front-end and a rocker-type reversing lever coupled to the accessory arm, to the ends of which reversing lever the tipping cylinder and the connecting link are coupled for the swivelling of the attachment. Attachments, e.g. a bucket or a log loader, are mountable on the lifting frame. In order to be able, in a raised position of the lifting frame, to swivel the attachment with the necessary large moment from a position tipped downwards into a position tipped upwards, without any reinforcement of the tipping cylinder, there is coupled with the lifting frame, in the direction of the attachment in front of the articulated joint connecting the tipping cylinder to the vehicle frame, at least one hydraulic cylinder, whereof the piston rod engages in an articulated manner with the swivel axle connecting the reversing lever with the tipping cylinder.

Abstract: A front end loader attachment with a deck of exaggerated length, low height, and narrow width which remains constant in proportion from the front to the back. The attachment has a backplate that has a tool engagement comprising a mechanical quick coupler that facilitates fast and convenient removal of the attachment that conforms to the articulating arms of the skid steer loader or other such front loading handling equipment. The attachment is designed to be used in inaccessible places due to limitations or safety reasons such as conveyor systems in mining operations.

Abstract: A laterally tiltable bucket for earth-moving equipment and the like is constructed with a flat plate of unitary construction attached to, and extending the full width of, the bucket, as a support for one or a pair of hydraulic cylinders whose axes are arranged parallel to the flat plate. When two cylinders are used, the pistons of the cylinders meet at a common linkage in the center. Various additional features, including construction of load-bearing portions of the bucket and the bracket to which the bucket is mounted, are joined at right-angles to simplify construction and increase the strength of the assembly.

Abstract: A pair of supported portions are provided in a bifurcated manner on the base end of the boom of a work machine. Operation oil hoses for an arm cylinder and operation oil hoses for a bucket cylinder are guided and piped into the boom from between both the supported portions. A hose guide hole is provided below each of the boom support portions so that operation oil hoses for the boom cylinder are inserted into the respective hose guide holes. At an intermediate portion of the rear surface of the boom, the operation oil hoses are taken out from the inside of the boom through a hose attachment plate and connected to respective external hoses connected to the arm cylinder. At a tip end of the boom, the operation oil hoses are pulled out from the inside of the boom through a rear side inclined surface of an angle rib.

Abstract: A bucket loader apparatus for scooping, filling, transporting and placing a plurality of bags used in constructing barriers. The bucket loader includes a universal mounting attachment for attachment to a loading vehicle whereby the loading vehicle manipulates the bucket loader between a range of dispositions. In a scooping disposition, the loading vehicle directs the bucket loader to scoop a flowable, granular material. In a loading disposition, the flowable granular material is directed through a plurality of integral funnels and into a plurality of bags, each funnel having a bag retained proximally to the funnel. After filling the bags, the bucket loader is transported to a point of use whereby the loading vehicle manipulates the loader bucket to an unloading disposition allowing placement of the filled bags. The bucket loader further includes a bag attachment assembly for selectively retaining empty bags and releasing filled bags.

Abstract: A variable width backhoe bucket having a width that is reversibly adjustable between a minimum value and a maximum value, comprising: a middle shell, flanking first and second side shells, and a constrained guidance system. The middle shell has a curved bottom, first and second opposite sides, and first and second opposite ends. Each side shell defines a bottom and a side panel such that the side shells are in substantially mirror symmetry with respect to each other. The constrained guidance system comprises a plurality of elongated male members, a plurality of complementary elongated female members, and a first and second oppositely opposed hydraulic cylinders each with one opposite end attached to the middle shell and the other end attached to one of the two side shells for moving the side shells in and out relative to the middle shell.

Abstract: A loader boom of a sugar cane loader includes a swivel mast having a vertical axis located to intersect the mid-point of a furrow located between first and second cane rows that would respectively pass centrally beneath the loader vehicle and outside wheels at one side of the loader vehicle during loading operation. The loader boom includes an inner boom section having a middle portion that extends parallel to the swivel mast axis to a height approximating that of a transporter container to be loaded when the boom is in a fully raised position, and having a lower end portion that is joined to the bottom of, and extends perpendicular to, the middle portion and is pivotally attached to an opposite side of the swivel mast axis from the middle portion. Mounted to the loader is a push piler implement having tines located for operating in a central region of the furrow free of the cane rows.

Abstract: Wheels, endless treads, or articulating legs powered by a first drive mechanism support a chassis for movement along a support surface over which are spread one or more regular or irregular shaped objects. A transversely extending, forwardly opening receptacle is mounted to the chassis for receiving and holding the objects. The receptacle is movable by a second drive mechanism about a substantially horizontal axis between a lowered collecting position and a raised dumping position for dispensing collected objects into a collection bin. Working together a pair of sweeper gates mounted at opposite ends of the receptacle can be rotated by a third drive mechanism about respective vertical axes between fully open and fully closed positions. The sweeper gates entrap and pull objects into the receptacle when they are within a predetermined proximity of the receptacle. A remote control allows an operator to control the first, second and third drive mechanisms.

Abstract: A method of verifying proper coupling of an implement assembly to a lift arm assembly by an operator who is located in a cab of a work machine is disclosed. The work machine includes the implement assembly and the lift arm assembly. The implement assembly includes a hinge plate. The hinge plate has a first coupling aperture extending therethrough. The lift arm assembly has a lift arm and a cylinder. The cylinder is secured to the lift arm. The method includes the step of actuating the cylinder so as to move a pin from a first pin position to a second pin position. The pin is spaced apart from the first coupling aperture when the pin is located in the first pin position. The pin extends through the first coupling aperture when the pin is located in the second pin position.

Abstract: The arm lowering motion restricting device 40 comprises an arm restricting member 41 which can be freely swung upward and downward, one end portion of which is pivotably connected to the arm 21, and which extends so as to cover the upper surface of the raising and lowering cylinder 23, a locking pin 50 which is detachably passed through the lower end portion of the arm restricting member 41, and a torsion coil spring 60 which is attached to the upper portion of the tip end of the arm restricting member 41. When the raising and lowering cylinder 23 is extended so that the tip end portion of the arm restricting member 41 contacts the end surface 23b1 of the cylinder tube 23b on the cylinder rod side, the retraction of the raising and lowering cylinder 23 is restricted.

Abstract: Structural members of work machines experience heavy forces and the structural member must be able to endure such heavy forces, but must also be sufficiently light to prevent the work machine from using most of its available power to manipulate the structural member. The present apparatus facilitates the heavy-duty construction along with a reduced weight by comprising top and bottom portions, a middle portion attached between and substantially perpendicular with the top and bottom portions, and a primary coupling formed at a first-end portion of the structural member and extending from at least one of the top, bottom, and middle portions to define a substantially I-shaped structural member.

Abstract: A stick or boom for a work machine. The stick or boom has a box portion including a first and second end and a first and second pivot point position at respective ends. A truss portion having an offset pivot point is attached to said stick or boom.