A tool coupler assembly may include a power linkage assembly, and the power linkage assembly may include a first power link. The first power link may include a first end configured for pivotal connection to a tool, and a second, opposite end configured for pivotal connection to one end of a tool control actuator. The tool control actuator may be connected at an opposite end to a first end of a tool support member of a machine, wherein operation of the tool control actuator pivots the tool about a tool pivot axis coaxial with a tool engagement interface at a second end of the tool support member. A power linkage actuator may be pivotally connected at a first end for coaxial rotation with the tool engagement interface at the second end of the tool support member, and at a second end for coaxial rotation with the first end of the first power link.

A demolition apparatus and an adapter frame of the demolition apparatus are disclosed. The adapter frame may be formed with coupling seats which engage pins on a jaw set to assemble the demolition apparatus. The openings of the coupling seats face different directions for quick and simple assembly of the demolition apparatus. A rotatable locking element may be provided on the adapter frame to lock a pin on the jaw set.

A coupler for securing an attachment to a machine is provided. The coupler includes a front portion configured to receive an attachment and a rear portion configured for coupling to lift arms and a tilt linkage of a machine. The front portion and rear portion being defined by an upper and lower cross-members, first and second side members, and a center portion. Each of the first and second side members has a plate configuration and an intersection of the inner surface of each of the first and second side members and a lower surface of the upper cross-member forms a substantially 90° angle with first and second window openings defined between the rear portion and the front portion.

A quick hitch coupler for coupling an attachment to a dipper arm of an excavator, the quick hitch coupler comprising: (a) a body member adapted for coupling to the dipper arm, (b) a fixed engaging jaw mounted on the body member for engaging a first one of a pair of coupling pins mounted on the attachment, (c) a movable engaging jaw mounted on the body member for engaging a second one of the pair of coupling pins of the attachment, the movable engaging jaw being movable between an engaged state with the movable engaging jaw engaging the second coupling pin while the fixed engaging jaw engages the first coupling pin for coupling the attachment to the coupler, and a disengaged state for disengaging the second coupling pin, (d) a latch co-operable with the fixed engaging jaw for retaining the first coupling pin of the attachment engaged in the fixed engaging jaw the latch being alternately operable in a latched state co-operating with the fixed engaging jaw for retaining the first coupling pin in the fixed engaging jaw, and an unlatched state for releasing the first coupling pin from the fixed engaging jaw, (e) an urging means for urging the latch into the latched state, (f) a release block being movable on (and relative to) a guide, the release block being movable on the guide between a non-active position in which the latch remains in the latched state and an active position where the release block abuts against the latch to move the latch from the latched state to the unlatched state against the urging action of the urging means, (g) a drive means generating an amount of displacement: (i) for moving the movable engaging jaw from the engaged state to the disengaged state, and (ii) for moving the release block on the guide from the non-active position to the active position.
The drive means generates an amount of displacement for moving the movable engaging jaw but the release block is not moved and a second stage where the drive means generates an amount of displacement for moving the movable engaging jaw above a threshold amount where the release block is moved.

A quick-change coupler device for coupling and uncoupling an implement attachment to a construction vehicle comprises a support member; first receiving members on one side of the support member for receiving a first coupling member; second receiving members disposed on the other side for receiving a second coupling member, the second receiving members having a locking member moveable between a release position for coupling or uncoupling the implement attachment and a coupling position for retaining the implement attachment on the coupler device; and a mechanical signaling mechanism for monitoring the locking status. The mechanical signaling mechanism comprises an assembly for signaling failure of the second coupling member to engage in the second receiving members. The assembly comprises a coupling gear for moving a signaling member into a locking position when the locking member moves into the coupling position, and into an unlocking position when the at least one locking member moves beyond the coupling position.

An electricity storage device (20) includes voltage detectors (25A) to (25C) detecting cell voltages (VcA) to (VcC) and a controller (26) controlling the cell voltages (VcA) to (VcC). The controller (26) includes a balancing control section (27) performing balancing control reducing deviations of the cell voltages (VcA) to (VcC), a maximum cell voltage calculating section (28) calculating a maximum cell voltage (Vmax) in the cell voltages (VcA) to (VcC), a minimum cell voltage calculating section (29) calculating a minimum cell voltage (Vmin) in the cell voltages (VcA) to (VcC), and an abnormality detecting section (34) detecting an abnormality of the electricity storage device (20) in accordance with whether or not a differential voltage (ΔV) between the maximum cell voltage (Vmax) and the minimum cell voltage (Vmin) is within a range of a reference differential voltage (ΔVstd1) calculated based on a history of the balancing control performed.

Provided is a coupling apparatus including: an arrangement for attaching the coupler to an associated vehicle with at least one hydraulic cylinder and hydraulically driven wedge, and a pair of cutouts wherein the hydraulic cylinder drives the wedge between an upper mounting bracket and an adaptor installed in a lower mounting bracket of an implement. The provided adaptor includes: a pin with a first opening, a threaded pin with a second opening and a cap bolt inserted through the pin and into the threaded pin and secured thereto thus securing the attachment of the pin and threaded pin to the lower mounting bracket of an implement to be secured.

A tool coupler for coupling a tool to an end of a machine link. The tool coupler having a coupler frame, a hook configured to receive a first pin of the tool and configured to attach to the end of the machine link such that the tool coupler, a wedge slidingly received within the coupler frame, and an actuator connected to the wedge to move the wedge away from the hook to bias a second pin of the tool against the coupler frame. The tool coupler mounts the tool to the machine link such that the tool and the tool coupler pivots about the same axis.

A method for determining a load in a working machine including a linkage to be connected to an implement includes determining pressure in a first hydraulic cylinder and pressure in a second hydraulic cylinder arranged to control the linkage and determining at least one link angle between at least two links in the linkage. The method further includes, for a selected linkage bearing, determining at least two perpendicular force components acting on the selected linkage bearing, based on the determined pressure in each of the first and second cylinders and the at least one link angle; and determining a load on the selected linkage bearing as a linear combination of the at least two perpendicular force components using predetermined constants for the linear combination.

An adapter for a quick-change system for changing attachments on a construction machine contains coupling elements arranged at a stipulated spacing from each other between two side walls for connection of the adapter to a quick changer. In order to provide improved protection from damage, the rear ends of the two side walls project rearwardly with respect to a back cover arranged between the side walls.