A quick-change device for automatically changing an attachment on a construction machine includes first receptacles disposed on one side of a support for receiving a first coupling element; second receptacles disposed on the other side of the support for receiving a second coupling element, with the second receptacles having at least one locking element which moves between a release position for coupling or uncoupling the attachment and a locked position for holding the attachment in place on the quick-change device; and a display device disposed on the support for monitoring the lock status. The display device includes an electrical lock status indicator and an electrical control unit which activates the lock status indicator in an extended locked position of the locking element and deactivates it in a retracted release position and an extended position of the locking element different from the locked position.

A modular thumb for a bucket of an excavator arm having a thumb body rotating with respect to the excavator arm. The thumb body has a pair of spaced elongate members and a main body extending between the elongate members. The main body has a bucket side and a non-bucket side. A channel on the non-bucket side and along the elongate members receives at least one of: an actuating arm of a progressive link kit and an actuator of the excavator arm. A tine kit may be welded to the main body.

A pin grabber coupler for coupling an attachment with an excavator having a housing at least between the plates; a rear receiving arch and a forward receiving arch formed by the spaced-apart plates for receiving a pin of the attachment; a wedge lock extending between the spaced-apart plates; and a main actuator driving the wedge lock into the rear receiving arch and retracting the wedge lock from the rear receiving arch. A locking system for locking or unlocking the wedge lock has a latch having a latch end, a lever end, and a pivot therebetween; the latch end engaging the wedge lock once the wedge lock is fully extended into the rear receiving arch; a biasing member coupled to the lever end and biasing the latch end towards the wedge lock; and an unlock actuator opposing the biasing member to disengage the latch end from the wedge lock.

A quick coupler and methods of coupling and decoupling a quick coupler and work tool are disclosed. The quick coupler includes a frame, cylinder, primary blocking member, secondary blocking member, biasing member, and controller. The method of coupling includes activating an AUTOMATIC LOCKING state, automatically locking a second tool pin within a hook, a first tool pin entering a notch, and activating a LOCKED state. The method of decoupling includes activating the AUTOMATIC LOCKING state, resting the work tool on a surface, activating an UNLOCKED state, and separating the quick coupler and work tool. Advantageously, the quick coupler can automatically lock the second tool pin without actuation of the cylinder.

A rake having tine wheels has a coupler configured to attach to the front end loader of a vehicle, such as a tractor. The rake has a series a tine wheels and support elements extend generally forward and outward from the coupler with the tine wheels overlapping to move vegetation toward the center of the rake. The tine wheels and support elements are rotatably mounted around substantially horizontal axes directed generally in the direction of travel for the rake which allows the rake to adapt to terrain. The support elements may also rotate around additional axes that allow the support elements to raise and lower. Some embodiments of the rake have trailing arms with wheels to support the rake while deployed for use. These wheels trail the rake and keep the turning radius nearly the same as the vehicle.

A concrete bucket attachment for a track mini skid steer. The concrete bucket attachment includes a frame for supporting a polyurethane tub. The frame includes a connection plate for connection to a standard connector plate of the track mini skid steer. The tub is semitransparent polyethylene. The frame and tub are sized to conform to the lift capacity of the track mini skid steer.

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 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.

Quick coupler with front pin safety lock system including body, front pin lock configured to rotate pivotally to lock in a pin, slide ratchet configured to move forward-backward to force the front pin lock to rotate, actuator including a cylinder and a piston rod which moves in the cylinder, rear lock connected to the piston rod, links configured to connect the rear lock and the slide ratchet and casing configured to house a part of the links and a part of the slide ratchet, is provided. It can work even when power is cut off and emergency front pin release can be performed.

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.