An attachment assembly for connecting an agricultural implement to a tractor. The attachment assembly comprises a tractor-side frame configured to extend from a rear of the tractor, and an implement-side frame configured to be removably attached to the implement. The implement-side frame is configured to rotate with respect to the tractor-side frame.

A working device to be connected to a traveling vehicle having a prime mover, the working device being configured to perform an agricultural work, includes a working portion to rotate to perform an agricultural work, an electric motor to be driven by electric power, a power transmission mechanism to which power generated by the electric motor is inputted, configured to transmit the power to the working portion; and a regeneration resistor to consume a regenerative power generated in the electric motor, the regeneration resistor being arranged at a position to be cooled by wind generated by rotation of the working portion.

A working device connected to a traveling vehicle having a prime mover and configured to perform an agricultural work, includes: a working portion to perform an agricultural work; an electric motor to be driven by electric power; a power transmission mechanism to which power generated by the electric motor is inputted, configured to transmit the power to the working portion; a regeneration resistor to consume a regenerative power generated in the electric motor; a switch portion to switch, between a connecting state and a shut-off state, a state established between the electric motor and the regeneration resistor; and a controller portion to control driving of the electric motor and switching of the switch portion.

A working device connected to a traveling vehicle having a prime mover and configured to perform an agricultural work, includes: a working portion to perform an agricultural work; an electric motor to be driven by electric power; a power transmission mechanism to which power generated by the electric motor is inputted, configured to transmit the power to the working portion; a regeneration resistor to consume a regenerative power generated in the electric motor; a switch portion to switch, between a connecting state and a shut-off state, a state established between the electric motor and the regeneration resistor; and a controller portion to control driving of the electric motor and switching of the switch portion.

A generator unit to be attached to a traveling vehicle that has a prime mover and a PTO shaft to transmit power from the prime mover, includes: a generator; an input shaft having: a first connector portion configured to be connected to the PTO shaft; and a second connector portion configured to be connected to a working device to be connected to the traveling vehicle; a transmitter mechanism to transmit, to the generator, power supplied from the PTO shaft, the power being inputted from the first connector portion to the input shaft; and an attachment frame having: an attachment portion to which the generator, the input shaft, and the transmitter mechanism are attached; and a mounting portion configured to be mounted to the traveling vehicle.

An assist device for lifting and facilitating the coupling of an implement's driveline to a power take-off on a vehicle is disclosed. The assist device is configured with a handle enabling a user to rotate the device from a storage position to an upright position where the device engages the driveline and hits it into a position suitable for coupling the driveline to the power take-off. The assist device is equipped with a roller to allow the driveline to slide along its longitudinal axis to facilitate coupling. The assist device may be equipped with one or more springs to further accept at least some of the weight of the driveline and enable easier maneuvering of the driveline during the coupling process.

An assist device for lifting and facilitating the coupling of an implement's driveline to a power take-off on a vehicle is disclosed. The assist device is configured with a handle enabling a user to rotate the device from a storage position to an upright position where the device engages the driveline and hits it into a position suitable for coupling the driveline to the power take-off. The assist device is equipped with a roller to allow the driveline to slide along its longitudinal axis to facilitate coupling. The assist device may be equipped with one or more springs to further accept at least some of the weight of the driveline and enable easier maneuvering of the driveline during the coupling process.

A protector for a coupler for connecting a drive shaft of an implement to a tractor power take-off (PTO) comprises an elongated shaft having a proximal end and a distal end. The shaft may include a plurality of splines formed around a circumference of the shaft which extend longitudinally along the shaft from the distal end toward the proximal end. The splines may be arranged for meshing engagement with internal splines within a bore of the coupler. A grease zerk fitting may be disposed at the proximal end of the shaft through which grease can be extruded. A channel may extend through the shaft from the proximal end toward the distal end that is in fluid communication with the grease zerk fitting. A plurality of exit ports may be disposed around the circumference of the shaft at one or more positions along the length of the shaft, which are in fluid communication with the channel. Grease may be extruded into the protector through the grease zerk fitting, through the channel, and out through the exit ports to the exterior of the device.

According to the disclosure a drive shaft connecting unit is provided. This comprises a vehicle-side drive shaft connecting device according to the disclosure and an accessory-side drive shaft connecting device according to the disclosure which can be releasably and interlockingly connected thereto and coupled therewith.

According to the disclosure a drive shaft connecting unit is provided. This comprises a vehicle-side drive shaft connecting device according to the disclosure and an accessory-side drive shaft connecting device according to the disclosure which can be releasably and interlockingly connected thereto and coupled therewith.