Abstract: A quick-hitch for coupling a tool to an excavator arm or a similar tool manipulator includes two hitch halves that can be latched together, coupled to one another at a first pair of latching parts, and pivoted together, about the coupled first pair of latching parts, into a coupling position in which a second pair of latching parts of the hitch halves can be latched. Energy coupling parts are provided on and a coupling carrier is attached to each of the two hitch halves.

Abstract: A quick hitch for coupling and decoupling a tool at a rotator for rotating the tool that has a rotator attachment part that is attachable to an excavator arm or the like and that has a rotary rotator part rotatable relative thereto, wherein the quick hitch has a coupling part at the rotator side that is fastenable to the rotatable rotary rotator part and has a coupling part at the tool side, wherein the two coupling parts can be brought into engagement with one another and can be latched to one another by at least one latch element. A latch operating actuator is provided at the rotator attachment part for actuating a latch adjustment part movably arranged at one of the coupling parts for the unlatching and/or latching of the latch element, the latch operating actuator being rotatable about the rotator axis of rotation relative to the latch adjustment part.

Abstract: A quick coupler for coupling a tool such as an excavator bucket, a clamshell grapple or demolition shears to a tool operator such as an excavator arm or the like. The quick coupler including a coupling mount for receiving a first locking part and a locking mount for receiving a second locking part, wherein a locking element for locking the second locking part in the locking mount is at least associated with the locking mount, with the locking element being actuable by an adjustment actuator. The quick coupler can be electrically controllable, with the quick coupler having an electric drive for actuating the adjustment actuator for the locking element.

Abstract: A hydraulic swivel drive for a grab that has two gripping arms or shells movable like tongs, including two swivel shafts parallel to each other and rotatably mounted in a drive housing, whose shaft ends are connectable with the gripper arms or shells, wherein the swivel shafts each have two oppositely threaded screw engagement portions, with which two pistons movable in opposite directions by means of hydraulic pressure for driving the swivel shafts are in screw engagement. Two differently large and differently contoured cylinder pressure chambers can be assigned to each piston in order to optimally adapt the cross-sectional area of the pistons for each of the reciprocating positioning movements and to appropriately select the pressure conditions. To be able to run in the differently contoured and dimensioned cylinder pressure chambers, each of the pistons is provided with different piston portions which are adapted to the respective cylinder pressure chamber.

Abstract: A quick-coupler for coupling a tool, including a coupling mount for receiving a first locking part and a locking mount for receiving a second locking part, wherein a securing element, which can be actuated by a pressure medium, is associated with the coupling mount for capturing and/or securing the first locking part in the coupling mount and a locking element, which can be actuated by a pressure medium, is associated with the locking mount for locking the second locking part in the locking mount. The securing element of the coupling mount can likewise be actuated by the pressure circuit for actuating the locking element of the locking mount, with the securing element being connected to the pressure circuit via a switching valve which is controllable by a sensor arranged at the coupling mount for detecting the locking part.

Abstract: A quick coupler for coupling a tool like for example a scoop, shell grab or demolition tongs to a tool guide such as an excavator arm or the like, including a coupling receptacle for receiving a first locking part and a locking receptacle for receiving a second locking part, wherein to the coupling receptacle a securing element is associated for catching and/or securing the first locking part in the coupling receptacle, and to the locking receptacle a locking element is associated for locking the second locking part in the locking receptacle, wherein the locking element and the securing element are actuable via a common pressure circuit having an unlocking pressure port and a locking pressure port selectively connectable with a pressure source or a return line via a valve. The securing element is actuable by a double-acting, reversible actuator and is movable both into an opening and a closing position.

Abstract: A quick-coupler for coupling a tool such as an excavator bucket, a clamshell grapple or demolition shears to a tool guide such as an excavator arm or the like, includes a coupling mount for receiving a first locking part and a locking mount for receiving a second locking part, wherein a securing element, which can be actuated by a pressure medium, is associated with the coupling mount for capturing and/or securing the first locking part and a locking element, which can be actuated by a pressure medium, is associated with the locking mount for locking the second locking part in the locking mount. The securing element of the coupling mount can likewise be actuated by the pressure circuit for actuating the locking element of the locking mount, wherein a time control device is provided for reducing the actuation pressure built up at the securing element within a specific time duration.

Abstract: A quick coupler for coupling a tool like for example a scoop, shell grab or demolition tongs to a tool guide such as an excavator arm or the like, including a coupling receptacle for receiving a first locking part and a locking receptacle for receiving a second locking part, wherein to the coupling receptacle a self-locking securing element is associated for catching and/or securing the first locking part in the coupling receptacle, and to the locking receptacle a pressure-medium-actuatable locking element is associated for locking the second locking part in the locking receptacle. The self-locking securing element of the coupling receptacle likewise is actuatable by the pressure circuit.

Abstract: A quick-coupler for coupling a tool such as an excavator bucket, a clamshell grapple or demolition shears to a tool guide such as an excavator arm or the like, includes a coupling mount for receiving a first locking part and a locking mount for receiving a second locking part, wherein a securing element, which can be actuated by a pressure medium, is associated with the coupling mount for capturing and/or securing the first locking part and a locking element, which can be actuated by a pressure medium, is associated with the locking mount for locking the second locking part in the locking mount. The securing element of the coupling mount can likewise be actuated by the pressure circuit for actuating the locking element of the locking mount, wherein a time control device is provided for reducing the actuation pressure built up at the securing element within a specific time duration.

Abstract: A quick-coupler for coupling a tool, including a coupling mount for receiving a first locking part and a locking mount for receiving a second locking part, wherein a securing element, which can be actuated by a pressure medium, is associated with the coupling mount for capturing and/or securing the first locking part in the coupling mount and a locking element, which can be actuated by a pressure medium, is associated with the locking mount for locking the second locking part in the locking mount. The securing element of the coupling mount can likewise be actuated by the pressure circuit for actuating the locking element of the locking mount, with the securing element being connected to the pressure circuit via a switching valve which is controllable by a sensor arranged at the coupling mount for detecting the locking part.

Abstract: A hydraulic driven turning device to be installed to a construction machine has a first body and a second body turning in relation to the first body, and a hydraulic cylinder attached from the first and second bodies to another body. A piston is axially movable via a hydraulic pressure medium, and a spiral part is attached to the piston. The spiral part causes a rotational movement to a counter part equipped with a spiral, whereupon the rotational movement can be transferred to be a turning movement of another body. The piston is arranged to be non-rotating in the cylinder by forming the cross section of the piston and the cylinder to be deviant from a round form, such as having an oval or angular shape, or by adjusting the piston to be eccentric in relation to a bearing axis thereof.

Abstract: An arrangement for fixing a work piece (14) to an end of a boom (1) in a working machine, like an excavator, in which arrangement the end of the boom comprises at least a tilting device (13) for the work piece (14), the moveable body of said device can be limitedly tilted in relation to the end of the boom (1) and to the moveable body of said device the work piece (14) is fixed either directly or by fitting a device (10), (11) of an other type as a distance piece, said device adjusting position of the work piece (14).

Abstract: An arrangement for fixing a work piece (14) to an end of a boom (1) in a working machine, like an excavator, in which arrangement the end of the boom comprises at least a tilting device (13) for the work piece (14), the moveable body of said device can be limitedly tilted in relation to the end of the boom (1) and to the moveable body of said device the work piece (14) is fixed either directly or by fitting a device (10), (11) of an other type as a distance piece, said device adjusting position of the work piece (14).

Abstract: A quick coupling assembly for fastening a working device to a working machine, wherein the working device comprises at least one pair of counter sleeves placed in the same axle line and at an adjusted distance from each other for pushing to the working machine coupled movable coupling pins (1a, 1b) into said sleeves wherein said coupling pins (1a, 1b) are placed in the working machine into a tube-like body (4), in which body said pins can be pushed in opposite directions at least partly out from said body (4) and pulled respectively back inside the body (4).

Abstract: A crushing or cutting device comprising a body (6), crushing/cutting jaws (1) making, rotation and attached to the body by means of one or several shafts (5), a first power unit (3) to move said jaws against each other, whereby at least one shaft (5) of jaw (1) is fitted with bearings to rotate in regard both to body (6) and jaw (1) and the said bearings are eccentric among themselves and the device has a second power unit (4) in order to rotate at least one said shaft (5). The second power unit (4) is fitted to press jaws (1) against each other in multiplying the motive force of the second power unit (4) between eccentricity distance (e) of the bearings and by means of a torsion arm longer than said eccentricity distance (e) connected to the shaft, in a situation, where shaft (5) is rotated 180° at the most, and when the first power unit (3) is hydraulically locked or in a position pressing the jaws against each other.

Abstract: The invention relates to a lifting fork for lifting pallets, panels, panel stacks, and the like, and comprises a fork carrier, the lower end of which supports lifting prongs, and the upper end of which is attachable to a linking piece which has a pendulous axis for the pendulous mounting of the lifting fork. According to the invention, the lifting fork is distinguished by the fact that a swivel device is provided by which all the lifting prongs are able to be swiveled, in the unloaded state, about a common axis which is located parallel to the pendulous axis of the linking piece and parallel to the insertion direction in which the lifting prongs are insertable under a pallet, panels, or a panel stack, or the like.

Abstract: The invention relates to a hydraulic swivel drive for a grab which has two tong-like movable grab arms, in particular two-shell grabs, having two swivel shafts which are pivotally supported in a shell carrier, are parallel to one another and whose shaft ends can be connected to the grab arms, as well as a shaft drive piece which is displaceably supported parallel to the swivel shafts and is in screw engagement with both swivel shafts so that the swivel shafts are rotated in opposite directions by displacement of the shaft drive piece. In accordance with the invention, the swivel drive is characterized in that at least one hydraulically chargeable plunger piston is provided to displace the shaft drive piece.