Abstract: In a work machine including a controller (500) configured to calculate respective target velocities of a hydraulic cylinder (5) for moving a plurality of work point candidates (8a and 8b) set to a work device along an optionally set target surface (60) on the basis of positional data of the target surface, posture data of the work device (15), and operation data of an operation lever (1), and control the velocity of the hydraulic cylinder (5) according to one of a plurality of the calculated target velocities, the controller calculates a candidate point velocity (VTab or VTba) occurring in a case where each of the plurality of work point candidates is moved at the corresponding target velocity (VTa or VTb) and occurring at a remaining work point candidate, selects a velocity at which an entry into the target surface is least likely from among the plurality of candidate point velocities, and controls the hydraulic cylinder according to the target velocity of the work point candidate associated with the selecte

Abstract: A work machine (1) includes a controller (40) having a notification control section (374) that exercises control as to whether to notify an operator of operation support information in accordance with a distance between a predetermined target surface, out of a plurality of discretionally set target surfaces, and a work implement (1A), the work machine including a current terrain profile acquisition device (96) that acquires a position of a current terrain profile, the controller including a target surface comparison section (62) that compares the position of the current terrain profile (800) with a position of the predetermined target surface (700) to determine a vertical position relationship between the current terrain profile and the predetermined target surface. The notification control section (374) changes content of the operation support information in accordance with a result of determination by the target surface comparison section.

Abstract: Systems and methods are disclosed for inspection, maintenance, debris removal, and cleaning of environments that may be difficult to access and hazardous. The system comprises a mast assembly, an arm assembly, a debris removal system, and a drive system. The mast assembly comprises an inner mast and an outer mast having a central axis about which the arm assembly revolves. The arm assembly provides support for the debris removal system. The debris removal system comprises a bucket tool, a plow tool, and one or more hoses for clearing and removing debris. The drive system comprises a plurality of one or more of cables, pulleys, rollers, and hoists to at least one of control motion of the arm assembly, raise and lower the inner mast, and position and control at least one of the bucket tool and the plow tool. The system is at least one of manually and automatically controlled.

Abstract: An engine block of an internal combustion engine is disclosed. The engine block may have a piston and at least one gas exchange valve. The piston may have a piston skirt having a first center axis. The piston may also have a piston head delimiting the piston skirt at the top with a diameter D. The piston head may have a piston head edge and a piston head recess with a piston recess wall having a height H. At least one valve pocket may be formed into the piston head edge. The at least one valve pocket may have a valve pocket depth T with respect to the piston head edge. The valve pocket depth T may fulfill the following condition with respect to the wall height H: 0.05 H<=T<=0.5H.

Abstract: An excavating machine obtains first and second target swing information indicating an amount of rotation of the work implement, based on a direction of a tooth edge of the bucket, a direction orthogonal to the target plane, and a direction of a swing central axis, and selects the first or second target swing information, based on the obtained first and second target swing information and a first angle and a second angle, and displays the selected target swing information, the amount of rotation being required for the tooth edge to face the target plane, the first angle being a minimum value and the second angle being a maximum value among angles formed by an axis orthogonal to the swing central axis and parallel to an operating plane of the work implement, and imaginary lines passing through the swing central axis and ends of the target plane.

Abstract: A construction machine control system controls a construction machine including a traveling device, a work machine having a working tool, and a swing structure to which the work machine is attached and which is attached to the traveling device to swing with respect to the traveling device. The construction machine control system includes a position detection device that detects a first position which is a position of a partial portion of the construction machine and outputs the first position as first position information; a state detection device that detects and outputs operation information indicating an operation of the construction machine; and a processing device that calculates a second position corresponding to the position of the partial portion using the first position information and the operation information and calculates a position of at least a partial portion of the work machine using second position information.

Abstract: A dual-arm work machine includes: a first front working machine to which a first attachment is mounted; a second working machine to which a second attachment is mounted; a first drive device that drives the first front working machine and the first attachment based on a first drive command from a first operation member; a second drive device that drives the second front working machine and the second attachment based on a second drive command from a second operation member; and a drive command output device that inputs the first and second drive commands, and generates and outputs a shared drive command that drives the first and second drive devices.

Abstract: A harvesting device for harvesting and/or picking up crop such as plants or plant parts located on the field is configured with a pick-up unit with a working width oriented transversely to the direction of travel (F), for picking up the crop. The pick-up unit has a multiplicity of pick-up elements, each of which can move at least partially in the vertical direction and are disposed along the working width. Outer ends of the movable pick-up elements form envelope curves during operation. A conveyor unit for further conveying the picked-up crop is provided downstream of the pick-up unit in the direction of the crop flow. The harvesting device so arranged improves the pick-up or intake of crop because the conveyor unit at least partially overhangs the envelope curves of the pick-up elements in the direction of travel (F).

Abstract: This invention provides for a vegetation removal system capable of removing vegetation from irrigation canals, rivers, ponds, lakes, marshes and other water systems where the growth of vegetation impedes the flow of water, access to water or there is a desire to remove unwanted vegetation. The vegetation removal system comprises a rake system that allows for the removal of the vegetation while letting the water and silt or mud flow through the rake and substantially remain as part of the bank or bottom of the body of water. The invention also allows for the folding of the vegetation removal rake into a compact form by folding the outboard wings over on top of the main rake section. Sensors attached to the vegetation removal system can provide situational awareness for the operator as well as determine the position orientation of the rake when the rake is submerged or working near obstacles.

Abstract: In an excavator equipped with an offset boom, an offset command value generating device of a rotation control device offsets a second boom arranged on a distal end side in a rotation direction relative to a first boom arranged on a proximal end side when an acceleration start judging device judges that a rotation operation is started, and offsets the second boom in a reverse rotation direction when a deceleration start judging device judges that a rotation deceleration operation is started. Accordingly, when a rotation acceleration is performed using a reaction force generated in the offset, clearances between members of a work machine can be contracted in advance in the rotation direction, while when the rotation deceleration operation is performed, these clearances can be contracted in advance in the rotation reverse direction, thereby reducing an impact in the acceleration and deceleration.

Abstract: The invention is intended to provide a position measuring system for a working machine, which can accurately measure the position of a monitoring point and can ensure high working efficiency even when measurement accuracy of a machine-equipped GPS has changed. A panel computer (45) computes the position of the monitoring point, which is set on an operating mechanism, in a three-dimensional space based on values measured by GPS receivers (43, 44) and angle sensors (21, 22, 23). When measurement accuracy of at least one of at least two GPS receivers lowers, the panel computer (45) corrects the computation for the position of the monitoring point based on a yaw angle measured by a gyroscope (25) for measuring the yaw angle of a machine body.

Abstract: A system for use in conjunction with an underwater dredging apparatus having a power shovel with a bucket connected to a power housing by two articulated manipulator arms. The articulation of the manipulator arms relative to each other as well as one manipulator arm relative to the power housing controls both the horizontal position of the bucket as well as the vertical depth of the bucket. The system includes a data processor, a depth sensor which is attached to one manipulator arm at a predetermined position, as well as angle sensors which provide output signals of the relative angle of the manipulator arms relative to each other as well as relative to the power housing. The data processor is programmed to calculate the vertical depth of the bucket as a function of the depth sensor as well as the angle sensors. Once the bucket depth is calculated, the processor displays the bucket depth on a video display.

Abstract: Dredge heads, for use with a dredging system, include one or more movable members, e.g. grate members, adapted and configured to selectively extend across the opening of the dredge head. The movable member(s) enables a user to clear the dredge head of plugging masses or blockages without having to de-energize the dredge system pump. Also, the movable member(s) enable a user to clear the dredge head of plugging masses or blockages without requiring the user to manually, by using his or her hand, withdraw the plugging masses or blockages from the opening of the suction/dredge heads.

Abstract: The invention is intended to provide an excavation teaching device for a construction machine which can realize easy confirmation of a proper target excavation surface and increase the working efficiency during excavation even in work of forming the face of slope in complicated three-dimensional landforms. A display unit (46) displays, as an image in a first screen area (46a), a plurality of small plane surfaces G constituting a three-dimensional target landform and illustrations of a body S of the construction machine and a bucket B as an excavating tool at a fore end of an operating mechanism.

Abstract: The invention relates to a screening, crushing or mixing bucket.

Abstract: An excavation system comprises a bucket, defining an outlet at its base, in fluid communication with a suction tube in fluid communication with a jet pump, configured to create a suction in the suction tube. A related method of excavating comprises loading excavation material into a bucket which defines an outlet at its base, sizing the excavation material by sieving action of a guard substantially covering the bucket outlet, and suctioning the sized material though the bucket outlet using a vacuum created by a jet pump.

Abstract: A transparent/translucent flexible resilient plastic scooper container for operation by underwater remotely operated vehicle jaws, having a flat-bottomed lower portion hollow bowl and an upper inverted bowl lid rearwardly hinged thereto and resiliently insertable into and withdrawable from the hollow of the lower portion by the closing and opening of the jaws.

Abstract: A system and method removes contaminated sediments during mechanical dredging operations, while maintaining a predetermined low moisture content of the contaminated sediments. The system uses a specially designed positive pressure controlled enclosure or enclosed excavator that houses a mechanical bucket and prevents ambient water from contacting the sediment during the excavation process.

Abstract: An apparatus for recovering oil has a bucket for skimming and collecting water and oil floating on the surface of the water. The bucket has a base plate having apertures for draining water collected by the bucket. The apertures have a preselected diameter and length to allow separation of the oil and water utilizing differences in specific gravities and viscosities of the oil and water so that the oil can be discharged from the bucket into an oil recovery tank after the water drains out of the bucket through the apertures but before the oil begins to drain out of the apertures.

Abstract: A system and method removes contaminated sediments during dredging operations to minimize the dispersion of particulate matter that normally occurs during conventional mechanical or hydraulic dredging operations. The system uses a specially designed pressure controlled enclosure or enclosed excavator that houses a mechanical bucket. The enclosure is designed to capture suspended particles that are dispersed into the water column during the mechanical dredging process. The system also includes the use of a self-contained membrane filtration treatment vessel to remove fine particulate matter from dredge drainage waters collected in the process.

Abstract: A system for transporting material recovered in a dredging operation performed by a dredge is disclosed. The system includes a water-borne material distribution vessel including a conveyor system for receiving and depositing the recovered material. It also includes at least one water-borne material transportation vessel for transporting recovered material from the dredge to the material distribution vessel. The water-borne material distribution vessel can deposit the material into the waterway to form an island (which may be a levy), into another water-borne vessel, or into an on-shore station such as a wheeled transportation vehicle.

Abstract: An underwater plow designed for the efficient removal of seagrass species from one site and transplantation into a new site, and a method of its use is disclosed. The seagrass plow comprises a durable plow with a harvesting blade positioned such that as the plow is drawn along a seabed, samples of seagrass with root systems intact are efficiently harvested for transplantation into an area devoid of seagrass. The method comprises the provision of a seagrass plow, translation of the plow across a seabed location rich in seagrass, such that sections of seagrass are harvested onto a removable tray, removal of the tray from the water with a sample intact, transport of the tray contents to a new location for transplantation of the seagrass, and repeating of these steps.

Abstract: A dredge having substantially a box-like shape, with an open front face and an open rear face, the rear face having a door hinged thereto and a lock member to hold the door in a locked position. An A-shaped frame member is pivotally secured to the front end of the dredge. Pivotable motion of the A-frame raises the front edge of the dredge over an obstruction. A pulley assembly is secured to the rear top end of the dredge, and a cable from the A-frame is placed over the pulley when the A-frame is to be pivoted to raise the dredge. A door is hinged to the rear side of the dredge. A locking hinge is secured to the rear of the dredge to lock the door in a closed position. The locking hinge includes a pivoting edge, which engages the top edge of the door, and a rectangular bar secured under the locking hinge. The rectangular bar has a width greater than the height so that rotation of the bar produces a pivoting motion of the locking hinge to unlock the door.

Abstract: An earth handling apparatus and a method for cleaning livestock ponds. The inventive apparatus comprises: a body structure; a hitch positioned at the forward end of the body structure for coupling the apparatus with a tractor, maintainer, or other appropriate vehicle; a plurality of wheels rotatable mounted for carrying the body structure; a scoop structure operably mounted behind the rearward end of the body structure; and at least one positioning assembly for raising, lowering, and rotating the scoop structure.

Abstract: An excavating bucket for rotating bucket excavators has a trough-shaped bucket having a forward edge formed by a U-shaped bucket lip. The lip has multiple shank holes and a cutting tooth in each shank hole which is removably attached to the lip. There are two sets of corner shank holes which lie on a circular line and receive a corresponding number of corner cutting teeth. Cutting portions of the corner teeth can be variously shaped so that the corner teeth can be adapted for varying cutting conditions. The cutting teeth have a weakening undercut adjacent their respective shafts so that forces acting on the teeth cause tooth deflections in the area of the recess while a remainder of the tooth, to which wear resistant layers of materials can be applied, is subjected to substantially no deflection to prevent a spalling of the wear resistant layers. An aft end of the bucket is defined by a multiplicity of side-by-side chains mounted on bars extending transversely between side plates of the bucket.

Abstract: The present invention discloses a dredging assembly which includes a vessel having at least one opening therein. A dredging pole of a predetermined length is positioned in and extends through the opening and is positioned substantially perpendicular to the vessel when in the dredging position. A dredging wheel is positioned at the lower end of the dredging pole with a vertically movable tension wheel at an upper end of the dredging pole and a reversing wheel spaced horizontally from the dredging pole. An endless cable is mounted on the dredging pole extending around the tensioning wheel, dredging wheel and reversing wheel and a plurality of the scoops are mounted on the endless cable, wherein the scoops are turned upside down by the reversing wheel for dumping the material carried therein.

Abstract: A marine dredging device comprised of scoop buckets pivotally connected to a reciprocating mechanism that extrudes soil into a receiver chamber and thence to upwardly extending soil transport tubes. Powered helices in the transport tubes serve to propel soil upwards to a discharge chute. Deployable silt curtains serve to close off the aperture between the scoop buckets and prevent the escape of sediments.

Abstract: A bucket for power shovels is disclosed having a first bucket half and a second bucket half. Each bucket half includes a pair of spaced side walls and an end wall extending between the side walls which together forms a scoop for each bucket half. The bucket halves are pivotally secured together so that the scoops face each other and are movable between an open position in which the scoops are spaced apart from each other and a closed position in which the scoops space each other and form a load carrying chamber. The side walls of the bucket half overlap each other upon closure to minimize the spillage of the load out through the sides of the bucket during a scooping operation. Furthermore, a flap valve is mounted to an upper side of at least one of the bucket halves to allow water and air to freely escape from the interior chamber of the bucket as the bucket is lowered. This valve, however, prevents spillage of the load from the interior of the bucket.

Abstract: An apparatus and method for removing unwanted vegetation (46). A fork (12) is provided having a vibratory motor (38) attached thereto. The fork is inserted into the rooting medium (48) surrounding the root mass (50) of the vegetation. While the fork is inserted therein, the fork is vibrated near the thixotropic level of the rooting medium, causing the rooting medium to liquefy. When the rooting medium is liquefied, the fork is raised upwardly, lifting the vegetation and corresponding root mass free of the rooting medium.

Abstract: An ash scoop which remains out of the water during most of its operation. The ash scoop has a retaining and a nonretaining configuration. It moves along a track downward into the pit while poised in its nonretaining configuration. Once in the pit, it moves to its retaining position to grab debris within the pit. It then moves back out of the pit along the track until it reverts to its nonretaining configuration to dump the ashes dragged out of the pit.

Abstract: A bucket equipped with a mixing device for use in work for improving the soil of grounds such as road grounds, an excavation machine having such a bucket, and a soil improvement method using such an excavation machine. The bucket is equipped with a mixing device disposed therein, which device can be rotated by a motor whose number of revolutions per unit time is adjustable, and has an opening formed through the bottom surface thereof. Further, the bucket includes an injection device connected to an external, solidifying agent supply source.

Abstract: A hybrid dredging apparatus uses a clamshell attached to a rigid boom to dig and remove material. The clamshell then deposits the material into the hopper of a positive displacement pump for discharge at low velocities and with minimal water content. Transducers are be used to determine and control the area of excavation.

Abstract: A floating grab installation for recovery of sand and gravel is disclosed. The installation includes a catamaran-type float or pontoon having a gripper and gripper support thereon. The gripper transfers the sand and gravel to an underwater tank having an endless bucket dredge which plunges to its lowest point.

Abstract: A sludge scraper apparatus for scraping a sludge sediment from an earthen bottom of a sludge reservoir, is described. The scraper apparatus is comprised of a main frame that provides for mounting a pair of skids, a scraper blade and a pair of wheels mounted on the apparatus. A first tow line is connected between the frame and a first winch, mounted on a first shore of the reservoir. A second tow line is connected between the skids and a second winch, mounted on a second shore of the reservoir. The first winch then moves the scraper apparatus over the earthen bottom of the reservoir from a starting position adjacent the second shore of the reservoir by spooling up the first tow line. This causes the scraper apparatus to move in a pass over the bottom of the reservoir, with the scraper blade plowing loose sludge sediment towards the first shore. Then, the second winch is used to move the sludge scraper back towards the second shore and the starting position by spooling up the second tow line.

Abstract: A working machine for use in a working system in which a pair of working machines, which are capable of traveling both on land and on a riverbed or the like, are respectively used for excavating gravel or the like on the bottom of the water and for transporting the same. The working machine is basically constructed such that an upper structure including an operator's cabin is mounted on a lower structure having a self-traveling mechanism, such as endless tracks, in such a manner that the heightwise position of the upper structure can be varied. The working machine is applied to a dredging machine for a shallow water area having an excavating mechanism juxtaposed in the vicinity of its upper structure, and to a transporting machine for a shallow water area having a load-carrying platform juxtaposed in the vicinity of its upper structure.