A work tool coupling assembly for a machine with a working implement. The work tool coupling assembly can include an excavator stick and a pin grabber coupler. The pin grabber coupler can include a first plate, a second plate, and a middle plate positioned between the first plate and second plate. The middle plate includes a portion protruding away from the first plate and second plate and is coupled to the excavator stick by a stick pin. The middle plate, the first plate, and the second plate are configured to couple with the working implement.

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 coupler including a housing with a top part for attachment to an excavator arm of an excavator, and a bottom part for attachment to an accessory for the excavator, such as an excavator bucket, the bottom part including a front jaw open to a front of the coupler for receiving a first attachment pin of an accessory and a rear pin receiving area for receiving a second attachment pin of the accessory, a latching member for the rear pin receiving area, the latching member including a body, a further jaw extending below the body, a release member extending forward of the body, an attachment point for an end of an actuator and a hole through the body into which a sprung member is located, wherein the sprung member extends through and to under the body and into or partially across a mouth of the further jaw.

The invention relates to a quick-change device (IO) having at least one locking bolt (26) and a motor drive which moves the locking bolt (26) into a locking position and an unlocking position, wherein the drive (16) has an energy connection (28a, 28b) and output means (34) interacting with the locking bolt (26), wherein the drive (16) comprises a rotary drive (30) having a motor and an output shaft (34), wherein the output shaft (34) is mechanically connected to the locking bolt (26), with the result that the locking bolt (26) is movable along an actuation axis. The invention is distinguished by the fact that the drive (16) has an attachment (20) for a shaft-hub connection, on which attachment a tool for manual actuation can be mounted, with the result that a manual actuation acts directly on the output shaft (34) and here the attachment (20) is arranged coaxially to a rotary connection (32a, 32b) of a gear shaft (32c, 32d).

A quick-change device for coupling an attachment unit to a work machine, having a securing element, which is pushed into a locking position and an unlocking position to lock or secure and unlock or release, respectively, the coupled attachment unit. To displace the securing element, a control device is present, which has a switch valve, which can be actuated hydraulically and mechanically via a button, and is designed such that the attachment unit can be locked or secured only when the button is engaged but can be unlocked or released independently of the position of the button.

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 coupler for coupling an attachment to an excavator. The coupler has first and second spaced-apart coupling formations for coupling with respective corresponding coupling formation of the attachment. The coupler also has a power actuated locking member for retaining the respective attachment coupling formation in engagement with the first coupling formation. A detection system is capable of detecting if the respective attachment coupling formation is in a desired position with respect to the first coupling formation, wherein the detecting means comprises at least one non-contact sensor, preferably an ultrasonic sensor.

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 joint of a front loader, the quick joint includes: a coupling member (30) having a hook shape and pivotally connected to a first pivot point (P1) of a boom post (20) through a first pivot shaft (31); a spring member (32) for applying an elastic force in a direction of releasing the coupling member (30) from a coupling target shaft (14) disposed on a boom post support (10) which is attached to a tractor (1); a lock unit (34) having a part making contact with the coupling member (30), and provided with a lock pin (36) for restraining behavior of the coupling member (30) at a coupling position (A1); and a guide slot (38) having an arc shape and formed in the boom post (20) to define a moving path of the lock pin (36) when the lock unit (34) rotates.

A work machine having a controller configured to receive a first position signal from a first boom position sensor, a second position signal from a second boom position sensor, and a load signal from the load measuring device, wherein the controller is further configured to calculate a map of hydraulic capacities within an envelope of movement for one or more of a first and a second actuators based on the first position signal, the second position signal, and the load signal, and generate a lift path of movement for the pin through at least a portion of the envelope based on the hydraulic capacities, wherein the movement envelope being smaller than the envelope.