An implement coupler including an electrical generator configured to generate electric power in response to a mechanical force provided by a power takeoff of a work vehicle. The implement coupler includes a support frame and an adjustment mechanism operatively connected to the support frame, wherein the adjustment mechanism is configured to adjust the position of the support frame with respect to the work vehicle. The generator is located on the support frame and is operatively connected to the power takeoff. The implement coupler further includes a drive shaft connected to the power takeoff and to the generator, an electrical coupler electrically coupled to the generator to provide access to the generated electrical power wherein the electrical coupler includes an output configured to provide the generated electrical power, and a line coupler including a connector configured to couple to source of material and to deliver the material.

A tractor includes a hydraulic lifting and lowering driver to lift and lower a three-point linkage, a load detector to swing according to a traction load of an implement, and a mechanical linkage to transmit a swing amount of the load detector to the lifting and lowering driver. The mechanical linkage includes a first linkage on one side in a right-left direction of a vehicle body frame and interlockingly linked with the load detector, a second linkage on the other side in the right-left direction of the vehicle body frame and interlockingly linked with the lifting and lowering driver, and an operation cable interlockingly linking the first linkage and the second linkage.

A tractor three-point hitch control system may include a tractor having a main body and a three-point hitch coupled to the main body. The three-point hitch may include a first holding arm, a second holding arm, and a top link. The system further includes a first actuator to raise and lower the first holding arm, a second actuator to raise and lower the second holding arm independent of raising and lowering the first holding arm, and a controller to output control signals to the first actuator and the second actuator to adjust an orientation of the first holding arm relative to the second holding arm.

A tractor includes a link mechanism and a power extractor. The link mechanism includes a top link, a right lower link, and a left lower link. A work apparatus is connectable to the link mechanism to move the work apparatus upward and downward. The power extractor is connectable to a power input of the work apparatus to take power from a power source and supply the power to the work apparatus. The power extractor is located at a position lower than a lowest position of the right lower link and a lowest position of the left lower link.

An implement coupler including an electrical generator configured to generate electric power in response to a mechanical force provided by a power takeoff of a work vehicle. The implement coupler includes a support frame and an adjustment mechanism operatively connected to the support frame, wherein the adjustment mechanism is configured to adjust the position of the support frame with respect to the work vehicle. The generator is located on the support frame and is operatively connected to the power takeoff. The implement coupler further includes a drive shaft connected to the power takeoff and to the generator, an electrical coupler electrically coupled to the generator to provide access to the generated electrical power wherein the electrical coupler includes an output configured to provide the generated electrical power, and a line coupler including a connector configured to couple to source of material and to deliver the material.

A method is provided for calculating characteristic geometrical or control variables of a three-point hitch for an agricultural tractor in which the hitch includes a lifting strut having a mounting position which is adjustable by means of a lifting arm in one of a plurality of receiving holes formed in a lower link and the hitch is pivotable by the lifting strut. The method includes moving the lower link initially into a horizontal angle position =0 and capturing the corresponding angular position P.sub.x, P.sub.z of the lifting arm and a corresponding angular position of the lifting strut relative to the vertical. The method further includes determining which of the receiving holes satisfies a geometrical constraint condition and determining the mounting position of the lifting strut on the lower link.

A working machine includes a driver including a hydraulic actuator to be actuated by a hydraulic fluid, and a controller configured or programmed to change a drive speed of the driver in a drive start period. The controller is configured or programmed to, if a limit value based on which operation of the driver is limited is equal to or more than a threshold, perform a first control in which the controller changes the drive speed of the driver in the drive start period based on the limit value, and if the limit value is less than the threshold, perform a second control in addition to the first control, the second control being a control in which the controller changes a maximum flow rate of the hydraulic fluid to actuate the hydraulic actuator based on the limit value.

A tractor with at least one lifting mechanism that has an upper link and lower links and actuators associated therewith, at least one attachment adapted to the lifting mechanism, and a driver assistance system is disclosed. The driver assistance system optimizes the operation of the tractor and has a computing unit, a memory unit and at least one input interface. The computing unit processes information generated by machine-internal sensor systems, external information, and information that may be saved in the memory unit. The tractor and/or the at least one attachment include a control device for controlling and regulating the tractor and the attachment. The driver assistance system comprises an automatic lifting mechanism that is configured to function based on characteristics, and to optimize adjustment of at least one work parameter of the tractor depending on selectable regulation strategies and/or optimization target variables saved in the memory unit.

A method is provided for calculating characteristic geometrical or control variables of a three-point hitch for an agricultural tractor in which the hitch includes a lifting strut having a mounting position which is adjustable by means of a lifting arm in one of a plurality of receiving holes formed in a lower link and the hitch is pivotable by the lifting strut. The method includes moving the lower link initially into a horizontal angle position =0 and capturing the corresponding angular position P.sub.x, P.sub.z of the lifting arm and a corresponding angular position of the lifting strut relative to the vertical. The method further includes determining which of the receiving holes satisfies a geometrical constraint condition and determining the mounting position of the lifting strut on the lower link.

A coupling assembly for a three-point hitch of an agricultural tractor includes a lower link articulated on the tractor, a lift strut attached to the lower link, a catch hook at a free end of the lower link, the catch hook including a coupling body and a locking mechanism having a longitudinally movably mounted locking latch, a pull lever attached to the locking latch to deflect the locking latch, counter to a restoring spring force, out of a first locking position, which locks the catch hook, into a second locking position, which releases the catch hook, a deflection lever pivotably attached to the lift strut, and a first pull cable section connected to a free end of the pull lever and secured such that a pivoting movement at the deflection lever caused via a second pull cable section deflects the locking latch into the second locking position.