Skid-steer type power unit engageable with an implement using an attachment assembly including an attachment frame and a hitch. An arcuate frame member is located forwardly of the attachment frame and is engaged therewith in such a way that the frame member pivots about a vertical axis located forwardly of the frame member and generally centrally positioned relative to the attachment frame. The frame member pivots in response to actuation of a hydraulic cylinder. The power unit includes a system for transferring weight of the implement rearwardly onto the power unit. A belt-drive power-take off system on the power unit powers the implement's operation. An underbelly drop spreader is located between the front and rear wheels of the power unit and a brine delivery system distributes brine from nozzles located rearwardly of the rear wheels. A unique control panel permits operation of all systems on the power unit and implement.

Skid-steer type power unit engageable with an implement using an attachment assembly including an attachment frame and a hitch. An arcuate frame member is located forwardly of the attachment frame and is engaged therewith in such a way that the frame member pivots about a vertical axis located forwardly of the frame member and generally centrally positioned relative to the attachment frame. The frame member pivots in response to actuation of a hydraulic cylinder. The power unit includes a system for transferring weight of the implement rearwardly onto the power unit. A belt-drive power-take off system on the power unit powers the implement's operation. An underbelly drop spreader is located between the front and rear wheels of the power unit and a brine delivery system distributes brine from nozzles located rearwardly of the rear wheels. A unique control panel permits operation of all systems on the power unit and implement.

Skid-steer type power unit engageable with an implement using an attachment assembly including an attachment frame and a hitch. An arcuate frame member is located forwardly of the attachment frame and is engaged therewith in such a way that the frame member pivots about a vertical axis located forwardly of the frame member and generally centrally positioned relative to the attachment frame. The frame member pivots in response to actuation of a hydraulic cylinder. The power unit includes a system for transferring weight of the implement rearwardly onto the power unit. A belt-drive power-take off system on the power unit powers the implement's operation. An underbelly drop spreader is located between the front and rear wheels of the power unit and a brine delivery system distributes brine from nozzles located rearwardly of the rear wheels. A unique control panel permits operation of all systems on the power unit and implement.

A coupler for coupling an implement having first and second spaced apart parallel pins, to the arm of a vehicle. The coupler has a body for attaching to the vehicle arm, a first fixed jaw, a movable second jaw facing away from the first jaw, and an actuator to selectively move the second jaw towards and away from the first jaw. The first jaw includes a lip forward of the seat for the first pin. A first locking member is pivotable between a locking position, in which a portion of the locking member protrudes into the opening of the first jaw, and an unlocked position. A second locking member is pivotable between a locking position in which a portion of the second locking member constricts the opening of the second jaw, and an unlocked position. Movement of the second jaw causes movement of the first locking member.

A quick-hitch for coupling a tool to an excavator arm or to a similar tool manipulator, including two hitch halves that can be latched together and that comprise at least one pair of latching parts with which a displaceable latch is associated, an actuating cylinder being provided for actuating the latch. The actuating cylinder has a mechanical blocking unit for locking the latching position of the bolt, having a lead screw which is in a threaded engagement with the piston and/or the piston rod of the actuating cylinder, so that the piston is only displaceable by turning the lead screw, as well as a releasable anti-rotation device for the lead screw.

A coupler for releasably coupling an attachment to a heavy-equipment machine. The coupler comprises a frame, and a plurality of connection elements extending from the frame, with the connection elements configured to engage with the attachment. The coupler additionally comprises a locking pin configured to extend simultaneously through the frame and the attachment. The coupler further comprises a locking element configured to selectively engage with the locking pin to securely couple the coupler to the attachment. The coupler further comprises an actuator configured to shift the locking element between an unlocked position and a locked position.

An attachment coupling device for heavy industrial equipment, includes a coupler body coupled to operation links of the heavy industrial equipment, a fixed hook fixedly mounted to the coupler body, a movable hook rotatably coupled to the coupler body, an actuator connected to the movable hook and rotatably connected to the coupler, and a pin locking unit rotatable through operation of the actuator, to lock a first pin of the attachment coupled to the fixed hook and the movable hook, to which a second pin of the attachment is coupled. The pin locking unit includes a pivot body rotatably coupled to the coupler body and connected to the actuator, a hook support for locking the movable hook, a pin support for locking the first pin, and a locking elastic member for preventing the pivot body from excessively pivoting in a release direction thereof.

The invention relates to a quick coupling for coupling a tool to the boom of a working machines, comprising a quick coupling part at the boom side and a quick coupling part at the tool side that are latchable to one another via two spaced apart latching axles and an energy circuit coupling for the automatic coupling of an energy connector at the tool side and an energy connector at the boom side that comprises an energy coupling part at the boom side and an energy coupling part at the tool side that move toward one another by pivoting together about a first latching axle on an orbit and thereby automatically couple with one another. At least one of the energy coupling parts is movably supported. The energy circuit coupling comprises a linear guide that compensates the circular relative movement of the energy coupling parts on the pivoting together and guides them linearly toward one another.

A clam bucket assembly comprise an assembly framework which comprises an upper section and a lower section. First and second clam buckets are supported by the lower section of the assembly framework, a first bucket cylinder controls operation of the first clam bucket to engage and discharge a desired bulk material, and a second bucket cylinder controls operation of the second clam bucket to engage and discharge a desired bulk material. The clam bucket assembly supports its own independent power module for supplying hydraulic power to at least the first and the second bucket cylinders and controlling operation of the first and the second clam buckets. The power module is supported by the upper section of the assembly framework, and the clam bucket assembly is completely powered solely by the power module and controlled by radio remote control receiver and transmitter.

A control device and method for controlling a disengaging actuator (1) of a tool attachment, the device comprising a three-state switch (2), with a middle neutral position (20), a first end position (21), and a second end position (22), a control unit (3, 3′) having an input corresponding to an activation of the first end position (21), an electro-valve (4) coupled hydraulically to the disengaging actuator (1), having a coil (40), a first control line (41) and a second control line (42) coupled respectively to first and second terminals of the coil (40) of the electro-valve, wherein one of the first and second control lines is coupled to the second end position (22) of the three-state switch and the other of the first and second control lines is coupled to an output of the control unit, such that both control lines have to be activated to allow disengagement.