A coupler for a wheel loader is used for coupling an attachment (102) to a lifting arm of the wheel loader. A bracket (100) is installed between the lifting arm and the attachment (102). The bracket's back face is pivotally connected to a lifting arm and the bracket's front face is detachably connected to the attachment (102). The attachment (102) has a pair of protrusions (104a,104b) rearwardly extending from the lower back of the attachment (102) and have locking holes pierced through their width. The bracket has a pair of receiving slots (108a,108b) formed at the lower front of the bracket and engaged with the protrusions(104a,104b). The coupler has a shaft (202), and a pair of locking pins (204a,204b) combined with the shaft by threads (216a,216b). The threads (216a,216b) formed at one end of the shaft (202) are right handed and the threads (216a,216b) formed at the other end of the shaft (202) are left handed. When users turn the shaft (202) in one direction,the locking pins (204a,204b) are extended and engaged with the locking holes (a coupling position). When users turn the shaft in the other direction,the locking pins are shortened and released from the locking holes (a release position).

A manual locking subassembly for a loader system of a utility vehicle includes an actuator manually operable from an operator cab of the vehicle and a mechanical linkage extending from the actuator and affixed to a loader attachment carrier rotatable about an axis. Manipulation of the actuator in a first direction moves a linkage member of the mechanical linkage from a first position in which a loader attachment implement is uniformly movable with the attachment carrier to a second position in which the loader attachment implement is non-uniformly movable with the loader attachment carrier.

A tool system is disclosed for a machine. The tool system may have a first adapter configured to removably connect with a first side of the machine, and a second adapter configured to removably connect with a second side of the machine opposite the first side. The tool system may also have a frame member with a first end pivotally attached to the first adapter, and a second end pivotally attached to the second adapter. The tool system may further have a tool pivotally connected to the frame member between the first and second adapters, and at least one hydraulic actuator disposed between the frame member and each of the first and second adapters.

There is described a bracket for mounting an excavation bucket on a coupler of an articulated arm. This bracket allows reversible mounting of the coupler of the excavation bucket by providing a rear concavity at a rear portion of the body and a front concavity at a front portion of the body, both oriented rearwardly, which can alternately hold a corresponding hinge shaft of a coupler in either orientation. Abutments at the center of the body (split into a front and rear abutment edges, intersecting) are provided to further retain the coupler in the mounting bracket in either configuration by a receiving a stopper of the coupler, which is circular and may be excentric with respect to another hinge shaft of the coupler. Gripping and un-gripping can thereby be facilitated.

An assembly comprising an excavation bucket and a bracket to mount the excavation bucket thereto, wherein the assembly allows to selectively mount the excavation bucket to an articulated arm with the receptacle of the excavation bucket facing frontward or facing rearward.

A coupler unit for coupling a work tool with a work machine includes a coupling bracket. The coupler unit includes a pin, at least one side plate, a boss extending from the side plate, and a slider movably coupled with the boss. Based on a contact of the work tool with the slider, the slider is configured to move relative to the boss from a first position to a second position. In the first position, the slider is misaligned relative to the boss and the side plate, and the slider prevents receipt of the pin within the boss and the side plate. In the second position, each of the coupling bracket, the slider, the boss, and the side plate are in alignment with each other, and the pin is receivable within each of the coupling bracket, the slider, the boss, and the side plate.

A working tool mounting mechanism for a tractor, includes: an extensible cylinder that is disposed on a tip of a boom of a front loader of the tractor, and comprises a cylinder body and a rod slidable with respect to the cylinder body; engaging parts that are respectively disposed on the cylinder body and the rod, and are each movable between an engagement position and a release position with extension and contraction of the extensible cylinder, the engaging parts each engaging with a working tool detachably attached to the boom at the engagement position, and not engaging with the working tool at the release position; a cover that covers the extensible cylinder from one direction; and a frame that is fixed to the cover and restricts at least one of: movement of the cylinder body and the rod in an extensible direction exceeding a predetermined position with the extension and contraction of the extensible cylinder, and rotation of the extensible cylinder around an axial direction.

A coupling device for coupling work tools to a telescopic boom of a telehandler, including a tool-holder plate connectable to the telescopic boom; a coupling plate configured to be fixed to a work tool and releasably retained by the tool-holder plate; a jig including a locking seat fixed to the coupling plate and a locking cylinder, provided with a seat pad fixed to the tool-holder plate and at least one piston, the piston being selectively switchable between a locking position engaged with the locking seat, and an unlocking position which frees the locking seat; a connection device including a first connector rigidly fixed to the coupling plate and a second connector fixed to a connector-holder plate mounted on the piston and alternatively translatable between a connection position, in which each second connector connects to a first connector when the piston is in the locking position, and a disconnection position, in which the second connector disconnects from the first connector when the piston is in the unlocking position.

A working vehicle includes a machine body, a lifter on the machine body, a linkage to attach and detach an attachment thereto and therefrom, the linkage being supported by the lifter such that the linkage is raisable and lowerable by the lifter, and a controller configured or programmed to select identification information of the attachment attached to the linkage and start a predetermined process based on the selected identification information. The lifter is operable to be driven by at least one hydraulic actuator to raise or lower the linkage. The controller is configured or programmed to select the identification information of the attachment attached to the linkage based on a pressure of hydraulic fluid supplied to the at least one hydraulic actuator, the pressure being a pressure of hydraulic fluid supplied when the attachment is caused to be out of contact with a contact surface by the lifter.

A working vehicle includes a receiver to receive a wireless signal which is transmitted from a transmitter in or on an attachment and which includes identification information and vibration information relating to the attachment, and a controller configured or programmed to, if the vibration information included in the wireless signal does not indicate vibration of the attachment, determine that the attachment from which the wireless signal is transmitted is a not-attached attachment not attached to a hitch, and generate management information and cause a memory and/or a storage to store the management information, the management information being information in which the identification information of the attachment determined as being the not-attached attachment is associated with storage location information indicating a storage location of the not-attached attachment, the storage location information being the vehicle position information acquired by a position detector when the receiver received the wireless signal.