A vehicle including a coupling device having a male coupler with a release pin and a female coupler having a female housing with a recess for removably connecting the male coupler. The coupling device further includes a mechanical ejector moveably connected to the female housing and configured for depressing the release pin for ejecting the male coupler from the female housing.

Disclosed embodiments include power machines, implement coupling systems and methods in which hydraulic or electric coupling between an implement and the power machine is made automatically using an existing actuator, for example a tilt actuator, of the power machine. Thus, additional actuators are not required to achieve hydraulic or electric coupling. In exemplary embodiments, power coupling is also free from the process of mechanically coupling the implement to the implement carrier. Also, in exemplary embodiments, a machine side coupler assembly moves with the implement after a connection is established, despite the implement coupler assembly being removed from the implement carrier. This allows the same implement carrier to be used on all similarly sized machines.

An implement connectable to a work vehicle includes an arm, a fastening arrangement arranged at a first part of the arm, and an attaching arrangement. The fastening arrangement is connectable to the work vehicle an attaching arrangement is arranged at second part of the arm. The attaching arrangement is attachable to a tool. The implement further includes a second hydraulic circuit configured to carry hydraulic fluid to at least one second hydraulic function. The first hydraulic function comprises a lifting function and a local control element. The implement further includes at least one second sensor arranged to obtain sensor signals at least related to the lifting function, a local control element and a digital interface to the work vehicle. The control element is arranged to receive and process the received sensor signals so as to determine a load weight and to feed the determined load weight to the digital interface.

A multi-coupler of a work vehicle includes a first portion and a cover. The first portion has a coupling surface. The first hydraulic connector is arranged on the coupling surface. The cover is movable between a first position in which the cover covers the coupling surface and a second position in which the coupling surface is uncovered by cover. The cover has a cover shell defining an interior cavity. The cover also includes an insert received into the interior cavity of the cover shell. The insert is operable to absorb a fluid that escapes from the first hydraulic connector.

A hydraulic system for a working machine includes first and second hydraulic actuators actuated by hydraulic fluid delivered by a hydraulic pump, a first flow rate controller to control a first supply flow rate of hydraulic fluid supplied to the first hydraulic actuator to match a first required flow rate, a second flow rate controller to control a second supply flow rate of hydraulic fluid supplied to the second hydraulic actuator to match a second required flow rate, and a special flow rate control system to, if a sum of the first and second required flow rates is greater than a maximum delivery flow rate of the hydraulic pump, reduce the first supply flow rate to allow the second supply flow rate to approach the second required flow rate.

The invention relates to a device (10) for conducting hydraulic fluid from a first connection (42, 44) to a second connection (38, 40) via at least one conduit (56, 58), having a housing comprising a first housing part (10a) having the first connection (42, 44) and a second housing part (10b) having the second connection (38, 40), which parts can be rotated relative to each other about an axis of rotation (10c) and have a hydraulic rotating union for transferring the hydraulic oil, and securing means (50, 52) are provided for securing the device (10) laterally to a torque motor (20), which comprises a first part (20a) and a second part (20b) that can be pivoted relative to the first part (20a), said first housing part (10a) having a central housing (66), said second housing part (10b) having a central body (68), and said central housing (66) and said central body (68) mutually engaging and being rotatably mounted relative to each other. The invention is characterised in that at least one of the conduit arms (64, 70, 72) extends substantially radially away from the central housing (66) and from the central body (68), in relation to the axis of rotation (10c), and in that the second housing part (10b) comprises securing means (52) which are associated with the second part (20b) of the torque motor (20).

Disclosed embodiments of power machines, implements and hydraulic systems utilize a hydraulic flow control circuit and method to implement multiple modes of operation while optimizing hydraulic fluid flow to either or both of primary and secondary function actuators. In a first mode the hydraulic flow control circuit is configured to receive pressurized hydraulic fluid flow from a first conduit and to provide the pressurized hydraulic fluid to the primary and secondary function actuators. In the first mode, the circuit is configured to direct return flow from the primary and secondary function actuators through the second conduit for return to the power machine. In a second mode, the circuit receives flow from the second conduit, provides the flow only to the secondary function actuator, and directs the return flow to the power machine through the first conduit.

Disclosed is a control system for depressurizing a work tool auxiliary circuit fluidly connected to a work tool coupled to a work machine by a quick coupler. The system may comprise a controller configured to: receive an unlock signal for the work tool; receive tool data associated with the work tool, the tool data including a target pressure for the work tool auxiliary circuit or a release duration for the relief valve; and in response to the unlock signal and the tool data, automatically actuate opening of the relief valve (a) for the release duration or (b) until the target pressure is reached in the work tool auxiliary circuit or machine-side circuit or (c) to reach and maintain the target pressure in the work tool auxiliary circuit or machine-side circuit.

An improved arrangement for multi-position attachment points for hydraulic implement coupling is provided. Hydraulic hoses associated with an implement attachment assembly may be removably coupled to a lift arm when in a non-operating configuration, and removably coupled to the attachment assembly when in an operating configuration.

The invention relates to a quick coupling for coupling a tool to the boom of a working machines, comprising a quick coupling part at the boom side and a quick coupling part at the tool side that are latchable to one another via two spaced apart latching axles and an energy circuit coupling for the automatic coupling of an energy connector at the tool side and an energy connector at the boom side that comprises an energy coupling part at the boom side and an energy coupling part at the tool side that move toward one another by pivoting together about a first latching axle on an orbit and thereby automatically couple with one another. At least one of the energy coupling parts is movably supported. The energy circuit coupling comprises a linear guide that compensates the circular relative movement of the energy coupling parts on the pivoting together and guides them linearly toward one another.