Electric tractor
AssigneeKubota Corporation
InventorsDaisuke INABA, Takayuki HISAE, Takashi SERA, Daichi MORIOKA, Masaki KUNIKATA
Life of this patent
Estimating the term…
Abstract
An electric tractor includes a first electric motor including an output shaft facing rearward, and a second electric motor including an output shaft facing rearward. The electric tractor includes a transmission case rearward of the first and second electric motors, and to which a travel apparatus is attached. The first and second electric motors are arranged side by side along a left-right direction, and the front-wheel transmission shaft extends frontward from the transmission case and passing between the output shaft of the first electric motor and the output shaft of the second electric motor in a plan view.
Claims14
An electric tractor comprising:
- a first electric motor including an output shaft facing rearward;
- a second electric motor including an output shaft facing rearward;
- a front wheel provided frontward of the first electric motor and the second electric motor;
- a transmission case provided rearward of the first electric motor and the second electric motor, and to which a travel apparatus is attached;
- a transmission mechanism provided inside the transmission case and configured to transmit motive power to the travel apparatus;
- and
- a front-wheel transmission shaft configured to transmit the motive power from the transmission mechanism to the front wheel;
- the first electric motor and the second electric motor being arranged side by side along a left-right direction;
- and
- the front-wheel transmission shaft extending frontward from the transmission case and passing between the output shaft of the first electric motor and the output shaft of the second electric motor in a plan view.
An electric tractor comprising:
- a first electric motor configured to generate motive power for traveling, and including an output shaft facing rearward;
- and
- a second electric motor configured to generate motive power and hydraulic pressure to operate a work apparatus, and including an output shaft facing rearward,
- the first electric motor and the second electric motor being arranged side by side along a left-right direction;
- the electric tractor further comprising a transmission case provided rearward of the first electric motor and the second electric motor, and to which a travel apparatus is attached;
- and
- inside the transmission case, the electric tractor further comprising:
- a travel transmission shaft extending along a front-rear direction between a first virtual line extending rearward from the output shaft of the first electric motor and a second virtual line extending rearward from the output shaft of the second electric motor in a plan view, and configured to transmit the motive power to the travel apparatus;
- a PTO transmission shaft extending along the front-rear direction at a position above or below the travel transmission shaft between the first virtual line and the second virtual line in a plan view, and configured to transmit the motive power to the work apparatus;
- a first transmission mechanism configured to transmit the motive power of the output shaft of the first electric motor toward a center in the left-right direction of the transmission case and then to the travel transmission shaft;
- and
- a second transmission mechanism configured to transmit the motive power of the output shaft of the second electric motor toward a center in the left-right direction of the transmission case and then to the PTO transmission shaft.
Dependencies are inferred from the claim text.