A coupling assembly for releasably mounting, and hydraulically coupling, a tool to a work machine. The coupling assembly includes a mount attachable to the work machine and configured to receive the tool in a mounted position of the tool, a rigid retaining body movable in translation relative to the mount along a translation axis between a retaining position for retaining the tool to the mount and a release position for releasing the tool from the mount, a first and a second actuator operable to move the retaining body between the retaining and release positions, and a hydraulic coupling manifold movable in translation relative to the mount along the translation axis for hydraulically coupling the tool to the machine, wherein the hydraulic coupling manifold uses the first and second actuators as guides for moving along the translation axis.

A quick-change coupler device for coupling and uncoupling an implement attachment to a construction vehicle comprises a support member; first receiving members on one side of the support member for receiving a first coupling member; second receiving members disposed on the other side for receiving a second coupling member, the second receiving members having a locking member moveable between a release position for coupling or uncoupling the implement attachment and a coupling position for retaining the implement attachment on the coupler device; and a mechanical signaling mechanism for monitoring the locking status. The mechanical signaling mechanism comprises an assembly for signaling failure of the second coupling member to engage in the second receiving members. The assembly comprises a coupling gear for moving a signaling member into a locking position when the locking member moves into the coupling position, and into an unlocking position when the at least one locking member moves beyond the coupling position.

Provided is a coupling apparatus including: an arrangement for attaching the coupler to an associated vehicle with at least one hydraulic cylinder and hydraulically driven wedge, and a pair of cutouts wherein the hydraulic cylinder drives the wedge between an upper mounting bracket and an adaptor installed in a lower mounting bracket of an implement. The provided adaptor includes: a pin with a first opening, a threaded pin with a second opening and a cap bolt inserted through the pin and into the threaded pin and secured thereto thus securing the attachment of the pin and threaded pin to the lower mounting bracket of an implement to be secured.

A tool coupler for coupling a tool to an end of a machine link. The tool coupler having a coupler frame, a hook configured to receive a first pin of the tool and configured to attach to the end of the machine link such that the tool coupler, a wedge slidingly received within the coupler frame, and an actuator connected to the wedge to move the wedge away from the hook to bias a second pin of the tool against the coupler frame. The tool coupler mounts the tool to the machine link such that the tool and the tool coupler pivots about the same axis.

A quick-change system for changing attachments on a construction machine with a quick coupler arranged to be pivotable about a pivot axis orthogonal to the axis of rotation by means of a hydraulic slewing drive and rotatable about an axis of rotation on a connection part by means of a hydraulic rotary drive contains mounts and at least one locking element which can be actuated by means of a hydraulic drive to hold an attachment coupled to the quick coupler. The quick-change system includes a hydraulic control device, which contains a first control circuit to drive rotary drive and slewing drive, at least one additional control circuit to supply the attachment coupled to the quick coupler and a shuttle valve arrangement to expose the hydraulic drive to the higher pressures acting in the first or the at least one additional control circuit to activate the at least one locking element.

A quick coupler for construction machines. An embodiment of the quick coupler comprises a housing with two opposing longitudinal walls, two opposing transverse walls, a top side, a bottom side, and a block cylinder inside the housing. The quick coupler may also comprise a locking device with a locking bolt and a drive device. The locking bolt protrudes from one of the two transverse walls in a locked position. The quick coupler may also comprise a first coupling element having a coupling end section and a second coupling element having a coupling end section hydraulically connected to one another, wherein the second coupling element is arranged on one of the two longitudinal walls of the housing.

A connection system for coupling a working assembly to a work vehicle includes a frame having a mounting portion at a first longitudinal end of the frame. The mounting portion is configured to directly couple to a frame of the work vehicle. The connection assembly also includes a mounting assembly at a second longitudinal end of the frame of the connection system. Additionally, the connection system includes a receiver assembly movably coupled to the frame of the connection system. The receiver assembly is configured to rotate about a point of rotation positioned along the frame of the connection system. The receiver assembly is configured to couple to a connector assembly on an arm of the work vehicle. A top part of the receiver assembly is substantially longitudinally aligned with the point of rotation while the receiver assembly is in a receiving position.

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.

This invention related to a coupler for securing an attachment to an earth working machine. The coupler comprises a coupler body that presents a receptacle having a capture region. A pin of an attachment can move into and out of the capture region. A retainer can capture the pin in the capture region but the retainer can be moved by a hydraulically driven driver to a position to allow release the pin from the capture region. A trigger that the pin will strike when the pin moves into or out of the capture region, decouples the driver from the retainer and the retainer is then allowed to be biased back to its retaining position by a spring.