A quick-change device for changing attachments on a construction machine includes a support, first receptacles arranged on one side of the support for receiving a first coupling element, second receptacles arranged on the other side of the support for receiving a second coupling element, and a capturing device arranged on the support for capturing the attachment. In order to avoid damage to the support caused by improper strain on the capturing device, the capturing device has at least one capturing hook pivotably arranged on the support.

An implement attachment adapter, including a centrally located top clevis; two spaced apart lower devises located below the centrally located top clevis and on opposing sides of a line extending vertically through the top clevis. The two spaced apart lower devises being are recessed into or behind a first face of a flat plate. The flat plate further includes side tabs located proximate each horizontal peripheral edge thereof extending outwardly away from the first face of the plate. A bottom tab extends outwardly downwardly away from the first face at an obtuse angle relative to the plate. A top bar extends across proximate a top portion of the plate and outwardly away from the first face of the plate and is oriented at an acute angle to the plate. The plate further presents engagement apertures and a second face opposing the first face to which the implement may be coupled.

A method of coupling a tool to a work machine including inserting a front lug of a coupling assembly into a front recess on the tool, inserting a rear lug of the coupling assembly into a rear recess on the tool, moving a retaining member of the coupler assembly to a retaining position relative to the tool to releasably mount the tool to the work machine, while simultaneously preventing movement of a hydraulic coupling manifold on the coupling assembly from moving; and moving the hydraulic coupling manifold to a coupling position with a hydraulic power transmission coupling on the tool to hydraulically couple the tool to the work machine in response to the retaining member reaching the retaining position.

A utility system may include at least one moveable arm, and at least one grappling assembly connected to the at least one moveable arm. The grappling assembly may include an upper claw including one or more lower grasping surfaces, and a lower claw including one or more upper grasping surfaces. The lower claw may be pivotally secured to the upper claw. The upper claw may be configured to close with respect to the lower claw. The lower claw may be configured to be wedged into at least a portion of the moveable arm so that the upper claw may compressively grasp a structure between the one or more lower grasping surfaces and the one or more upper grasping surfaces.

A work-tool mounting mechanism detachably attaches a predetermined work tool that includes an engaged portion including an engagement hole. The mechanism includes: an engaging portion that engages the engaged portion and includes; a lever that is rotatably attached to the engaging portion; a lock pin that is movable between a locked position and an unlocked position, the lock pin being inserted into the engagement hole in the locked position, and not inserted into the engagement hole in the unlocked position; and a linking tool that moves the lock pin between the locked position and the unlocked position with a rotation of the lever. The linking tool includes a regulating portion that regulates the lock pin at the locked position from moving to the unlocked position.

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.

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.

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 coupler device for coupling and uncoupling implement attachments to and from construction site equipment includes a carrier assembly, first receiving members disposed on one side of the carrier assembly for receiving a first coupling member, second receiving members disposed on the other side of the carrier assembly for receiving a second coupling member, a locking unit dedicated to the second receiving members and capable of moving between a release position and a locking position, and a catch unit disposed on the carrier assembly for catching the implement attachment. To simplify coupling and to ensure an increased safety level, the catch unit comprises at least one catch hook swivel-mounted on the carrier assembly and a control unit controls swivel of the catch hook between a folded-in and a folded-out position. The control unit is actuated by the first coupling member and is actuated independently of the locking unit.

The single cylinder hydraulic coupler includes a hydraulic cylinder system, a first pivot linkage system, a second pivot linkage system, a first spring system, a second spring system, a first locking pin system, and a second locking pin system. The single cylinder hydraulic coupler couples an attachment to a machine with increased efficiency and reliability over conventional methods.