A quick hitch for mounting an implement on a machine includes at least one lug for connecting the machine and a securing assembly for securing the quick hitch to an implement. The securing assembly includes an over-center mechanism and a locking member. The over-center mechanism includes a first member pivotal at an axis D relative to a chassis, a first end of a first link that pivots at an axis E relative to a first arm of the first member, and a second end of the link that pivots at an axis F. When the securing assembly is in a first position with the hitch secured to an implement, axis E lies on a first side of a line between axes D and F. When in a second position with the hitch unattached, axis E lies on a second side of a line between axes D and F.

A mast coupling arrangement for mounting a front loader to a work vehicle at a mounting frame defining connection points and a load point includes a mounting bracket mounted at an end of a mast of the front loader, and a first mast connector removably coupling the mounting bracket and one of the connection points of the mounting frame when the front loader is attached. The mast coupling arrangement includes a load element mounted to the mast that, when the front loader is attached, is in load transferring contact with the load point of the mounting frame. The mast coupling arrangement includes a second mast connector removably coupling the mounting bracket and another of the connection points of the mounting frame when the front loader is attached to. The second mast connector and the associated connection point of the mounting frame are separable when the front loader is attached.

In a control device, a pilot-operated first check valve connects a solenoid-operated first directional control valve to a lock side chamber of a lock cylinder installed in a quick coupler. A pilot-operated second check valve is connected to the lock cylinder unlock side chamber, a solenoid-operated second directional control valve connected between the second check valve and the first directional control valve. The first and second directional control valves are controlled by a controller with processed signals input from a mode selector switch, first sensor detecting a buck closing pilot pressure, and second sensor detecting a bucket closing working pressure.

An arrangement for removable coupling of a tool with a working machine includes a first part with opposing indentions, which is supported by the tool, and a second part that is supported by a maneuverable arm, which includes shafts to be introduced into the indentations, a lever with which the shafts can be moved away from each other, and a locking mechanism for the displacement of the shafts. One of the shafts is united at a joint with a first arm section, and another shaft is united at a joint with a second arm section. The arrangement also includes at least one knee lever joints, one of which demonstrates two levers united with the shafts.

A shovel includes a lower traveling body, an upper turning body turnably mounted on the lower traveling body, a link unit attached to the upper turning body, and a processing circuitry configured to align an end of the link unit with an end attachment to be attached.

An excavator coupler including a front jaw 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 first closure mechanism for the rear pin receiving area, the first closure mechanism including an actuator and a movable second pin engaging surface for selectively securing the second attachment pin in the rear pin receiving area and for pulling the first attachment pin into the front jaw of the coupler, a second closure member for the front jaw for selectively retaining the front attachment pin in the front jaw, and a front latch control component for selectively controlling the second closure member between an open state and a closed state wherein the actuator includes a release member for selectively engaging a release arm on the front latch control component to activate or deactivate the front latch control component.

An excavator coupler (10) comprising a housing with a top part (12) for attachment to an excavator arm of an excavator, and a bottom part (14) for attachment to an accessory for the excavator, such as an excavator bucket, the bottom part comprising a front jaw (22) open to a front of the coupler for receiving a first attachment pin (122) of an accessory and a rear pin receiving area (26) open to a bottom of the coupler for receiving a second attachment pin (134) of the accessory, the coupler further comprising a first closure mechanism (30) for the rear pin receiving area, the first closure mechanism comprising an actuator (40) and a movable second pin engaging surface for selectively securing the second attachment pin (134) in the rear pin receiving area (26) and for pulling the first attachment pin (122) into the front jaw (22) of the coupler (10), a second closure member (74) for the front jaw (22) for selectively retaining the front attachment pin (122) in the front jaw (22), and a front latch control component for selectively controlling the second closure member (74) between an open state and a closed state wherein the actuator (40) comprises a release member (86) for selectively engaging a release arm (152) on the front latch control component to activate or deactivate the front latch control component.

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 common connection apparatus for coupling a power tool to an extensible arm and a power supply, the apparatus including a tool support base designed to support a tool, and a power supply support base designed to be affixed to the end of the extensible arm. The tool support base and the power supply support base each include a plurality of power connectors, positioned for engagement when the bases are aligned. The tool support base also has an alignment stab, which is received within a channel of the power supply support base. A plurality of pins are further positioned on the tool support base, to be received in apertures of the power supply support base. By this configuration, the bases may be aligned and engaged, facilitating the transmission of power from the machinery to which the arm is affixed, to the tool.

A coupler device for coupling an attachment to a mechanical arm of a machine or vehicle, comprising a main hitch body (2), an actuator (3) mounted to the main hitch body (2) and moveable relative to the main hitch body (2) and a front locking mechanism. The front locking mechanism comprises a first locking member (4) adapted to be pivoted by operation of the actuator (3) from an open position to a closed position to engage with a first pin or other means of an attachment to secure the attachment to the mechanical arm and a second locking member (6) provided on the main hitch body which is adapted to mount the actuator to the main hitch body when the first locking member is in its closed position such that the main hitch body prevents the first locking member (4) from pivoting into its open position.