A quick-change system for changing attachments on a construction machine using an adapter and a quick coupler connectable to the adapter in which the adapter has at least a first coupling piece and the quick coupler has a second coupling piece connectable to the first coupling piece. A replaceable intermediate piece is arranged on the first coupling piece provided with first electrical contact elements and/or the second coupling piece provided with second electrical contact elements to produce an electrical connection between the first coupling piece and the second coupling piece.

Hydraulic system (120) for a vehicle comprising a vehicle hydraulic circuit (122) among others for the hydraulic supply of connecting means of an automatic coupling means, wherein the connecting means is designed to connect a coupling means (31) of the vehicle with a correspondingly designed coupling means (32) of an add-on unit and an operating hydraulic circuit (121) for supplying at least one Power-Beyond coupling, wherein the vehicle hydraulic circuit and the operating hydraulic circuit are designed independent of one another and each having a hydraulic pump.

A coupler for coupling an attachment to an excavator or other machine comprises a powered actuator for actuating a locking member into and out of said locking state, a first power coupling unit, and a second actuator for moving the power coupling unit into and out of an engaging position in which it is engagable with a corresponding second power coupling unit of the attachment. The coupler is configured to cause the first power coupling unit to move into the engaging position after said latching member adopts the locking state and, when decoupling the attachment from the coupler, to cause said latching member to remain in its locking state until after the first power coupling unit is moved out of its engaging position.

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.

Improvements to work attachment assemblies and in particular work attachment assemblies for use with work machines such as excavators.

In some implementations, a hydraulic coupling connection, defined between a hose and a valve of a machine, includes: a split flange configured to be engaged with a coupling disposed at an end of the hose; a plurality of fasteners disposed through corresponding openings in the split flange, wherein the plurality of fasteners are configured to secure the split flange and the coupling to a body of the valve; and a bracket secured with the split flange, via first and second fasteners, of the plurality of fasteners, disposed through corresponding openings in the bracket, wherein the bracket is configured to secure the connection at a first angle.

A wiring assembly for an excavator including a first wiring harness and a second wiring harness. The first wiring harness can include a first branch and a second branch. The second wiring harness can include a third branch, a fourth branch, and a fifth branch. The fifth branch can be include a fifth connector couplable to a tiltrotator connector of a tiltrotator of the excavator.

The invention relates to the field of excavation systems, and more particularly to excavation systems including tools for excavation by electric pulses. An excavation system of the invention comprises a support frame (34), a hydraulic circuit with a pump, and first and second excavation tools. One of said first and second excavation tools is a mechanical excavation tool (1) having a hydraulic actuator and a mounting interface with at least one mechanical fastener member and at least one hydraulic coupling in fluid flow communication with said hydraulic actuator, while the other one of said first and second excavation tools is a tool (1) for excavation by electric pulses, comprising an electricity generator (3) with a rotary shaft for generating electricity from rotation of the rotary shaft, a hydraulic motor coupled to said rotary shaft to drive rotation of the rotary shaft, and an electronic power module (4) electrically connected to the electricity generator (3) in order to be powered by the electricity generator (3) so as to generate electric pulses of instantaneous power that is higher than an instantaneous power of the electricity generator (3), a plurality of electrodes (5a, 5p) including at least one electrode (5a) connected to said electronic power module (4), the electrodes being arranged on said front face, and a mounting interface (14) with at least one mechanical fastener member (22), and at least one hydraulic coupling (20) in fluid flow communication with said hydraulic motor (2). Each of the mounting interfaces of the first and second excavation tools is suitable for releasably mounting the corresponding excavation tool in alternation under the support frame (34) of the excavation system, with the corresponding hydraulic coupling in fluid flow communication with said hydraulic circuit of the excavation assembly.

A coupling/uncoupling device for a plate-like multi-coupling device for the simultaneous connection of a plurality of hydraulic, electrical, and/or pneumatic lines includes quick couplings. In particular, the coupling/uncoupling device is provided with a safety device configured to prevent an accidental uncoupling and to be operated by the operator with one hand only. A plate-like multi-coupling device the includes such coupling/uncoupling device is also an object of the present invention.

An implement attachment device for tractors allowing for easy and quick attachment of implements and tools to a tractor bucket along with correspondingly easy and quick detachment of such implements and tools, wherein such device may itself may be readily connected or disconnected to the bucket and while connected may be easily switched from a bottom use-ready position to a top stowed position in relation to the tractor bucket.