A system for connecting an implement to a machine. A universal adapter to connect implements with machines. A frame with brackets on one side to couple to lift arms and tilt operators on a machine such as an earthmoving vehicle. Brackets on the other side of the frame to detachably couple to the implement. A locking mechanism on the frame with operative handles to engage locking pins on the adapter with the implement between a release and locked position.

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 pin grabber coupler and method for locking and unlocking a tool to a machine is disclosed. The pin grabber coupler may comprise a tertiary lock configured to pivot between an unlocked TL position and a locked TL position. The tertiary lock may include a first and second shoulders, a leg, a tab, a latch, a bias member and a detent. The bias member may be configured to exert a biasing force on the tertiary lock to urge the tertiary lock to the locked TL position. The detent may be configured to exert, when in a hold position, a holding force against the latch that is greater than the biasing force exerted by the bias member. When the detent is in a release position, the holding force applied by the detent against the latch is less than the biasing force applied by the bias member.

The present invention relates to a double safety device for a quick coupler, which, in a coupling process of a quick coupler for connecting a heavy equipment attachment and an excavator, automatically prevents unintentional separation between an attachment pin and a fixed hook, and enables a locking device to be automatically operated in association with a cylinder operation for slidably moving a hitch and elastic force of first and second compression springs. The double safety device for a quick coupler according to the present invention comprises: a quick coupler body mounted to an end of an excavator arm and a push link; a fixed hook disposed on one side of the quick coupler body and coupled to a first attachment pin; a hitch disposed on the other side of the quick coupler body and engaged with or disengaged from a second attachment pin according to an operation of a hydraulic cylinder; and a locking means which is operated in association with a cylinder operation for operating the hitch, and prevents unintentional release of a coupling state between the fixed hook and the first attachment pin by compressive elastic force of first and second compression springs.

Quick coupler for coupling a tool on a working arm of a public works machine, with two connection components equipping the tool, two coupling components for coupling with the connection components, a security component mounted for free rotation, at least one locking component, a translationally movable release component adapted to allow the security component to rotate. The release component with at least one translationally movable part adapted to be in contact with at least one surface, the shape of which is adapted to that of the security component, and a security component with at least one surface adapted to be in sliding contact with at least one complementary shaped surface of a connection component, the sliding contact inducing a rotation of the security component when the connection component moves out of its accommodation housing defined by the first coupling component.

A coupler for coupling an attachment to an excavator or other machine comprises a powered actuator for actuating a locking member into and out of said locking state, a first power coupling unit, and a second actuator for moving the power coupling unit into and out of an engaging position in which it is engagable with a corresponding second power coupling unit of the attachment. The coupler is configured to cause the first power coupling unit to move into the engaging position after said latching member adopts the locking state and, when decoupling the attachment from the coupler, to cause said latching member to remain in its locking state until after the first power coupling unit is moved out of its engaging position.

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.