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 quick coupler provides a way to securely lock implements to the coupler utilizing a design which receives hooks at connection locations and then directs pins into pockets at a rear of the implement. Instead of directing the pins along a pocket axis (as is done in the prior art), the pins are directed at an angle relative to the pocket axis thereby securely connecting the coupler to the implement. In fact some embodiments can have a pin extension system spaced from a wedge plate surface defining the pocket of the implement.

A monitoring system for a work vehicle having a lift system to which an implement is attachable via a connection assembly includes a weight detection subsystem operable with the lift system and configured to transfer signals representative of a weight supported by the lift system. The monitoring system also includes a position detection subsystem operable with the connection assembly and configured to transfer signals representative of a state of the connection assembly. A controller is in operable communication with the weight detection subsystem and the position detection subsystem and is configured to receive signals from the weight detection subsystem and from the position detection subsystem, determine a condition of the connection assembly based on the signals received, and output a signal based at least in part on the determined condition.

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 quick hitch for mounting an implement on a machine. The quick hitch has at least one lug for connection to a machine and a securing mechanism for securing the quick hitch to an implement. The quick hitch also has at least one removable plate for engagement with a surface of an implement.

An indication system associated with a coupler assembly includes a sensing element affixed to the coupler assembly, and an indicator assembly coupled to the sensing element. The sensing element is arranged and positioned proximate to a hydraulic assembly of the coupler assembly. The sensing element is configured to generate a signal indicative of an extension of a piston pin of the hydraulic assembly. The indicator assembly is configured to receive the signal indicative of the extension of the piston pin, and determine if the piston pin is in an extended state based on the received signal.

There is described a coupler for removably coupling to an excavation tool having a pair of brackets, each bracket having longitudinally spaced-apart first and second coupling notches defined therein. The coupler generally has a frame extending longitudinally between first and second end portions, the frame having a pair of opposite, first coupling protrusions transversally protruding from the first end portion; a pair of opposite, second coupling protrusions being movably mounted to the frame and transversally protruding from the second end portion; and an electrical motor being mounted to the frame and being configured for selectively moving the second coupling protrusions along a longitudinal orientation between an open position allowing engagement between the coupler and the excavation tool, and a closed position, in which the first and second coupling protrusions are pressingly engaged against respective first and second coupling notches, thereby maintaining the coupler fixedly coupled to the excavation tool.

A lock proving system provides a positive indication when a locking mechanism has correctly latched a removable attachment to an agricultural machine, the attachment being a header for a combine harvester for example. The locking mechanism includes a locking element that is shiftable into a locking position in which, provided the attachment is mounted to the machine with the correct alignment, the locking element acts upon a lock proving mechanism that is mounted to the attachment. The lock proving mechanism delivers mechanical feedback to the machine, the action of which is detected by a sensing device mounted upon the machine.

An anti-release mechanism of a pin-grabber coupler securing a work tool connected to a work machine is disclosed. The anti-release mechanism comprises an actuator, a wedge, a latch, a guide rod connecting the wedge and the latch, and a bias member on a first guide rod end of the guide rod biasing the latch and the wedge together. The wedge and the latch lock around a pin of the work tool and maintain the wedge against the pin of the work tool during a loss of engagement force of the wedge against the pin.

A connection system for connecting an implement to a work vehicle has a movable arm and an operator control area. The connection system includes a lock assembly and a control switch. The lock assembly is able to be coupled to the movable arm. The lock assembly includes a pin and an electrically operated actuator. The pin is able to engage a portion of the implement. The actuator is coupled to the pin for translating the pin. The control switch is positioned for engagement from within the operator control area. The control switch is able to be in selective electrical communication with the actuator.