Work vehicle

Patent metadata

Field	Value
Publication number	US-12377735-B2
Application number	US-202318372449-A
Country	US
Kind code	B2
Filing date	Sep 25, 2023
Priority date	Sep 26, 2022
Publication date	Aug 5, 2025
Grant date	Aug 5, 2025

Abstract

A work vehicle includes travel devices; a battery; a motor; an inverter configured to operate the motor; an operation section including a steering wheel configured to operate the travel devices, and an operator seat; a transmission case housing a transmission for travel; and a transmission shaft, wherein the motor is between a front travel device and a rear travel device in a side view and below the steering wheel, and the motor, the transmission shaft, the transmission, and the travel devices are configured such that motive power from the motor is transmitted to the transmission via the transmission shaft and transmitted from the transmission to the travel devices.

First claim

What is claimed is:

1. A tractor comprising:
left and right body frames;
at least one travel device comprising a front travel device;
a battery;
an electric motor;
an inverter configured to operate the motor;
an operation section comprising an operator seat;
a transmission case housing a transmission for travel;
a transmission shaft; and
left and right mounting brackets arranged, respectively, on inner faces of the left and right body frames,
wherein the electric motor is forward of the front travel device in a side view, and attached to the left and right mounting brackets,
wherein the inverter is above the electric motor, and
wherein the electric motor, the transmission shaft, the transmission, and the travel device are configured such that motive power from the electric motor is transmitted to the transmission via the transmission shaft and transmitted from the transmission to the travel device.

2. The tractor according to claim 1 , further comprising:
a work device;
a link mechanism disposed on the transmission case, configured to be raised and lowered, and joined to the work device;
a hydraulic cylinder disposed on the transmission case and configured to raise and lower the link mechanism;
a hydraulic pump configured to supply hydraulic oil to the hydraulic cylinder; and
a pump motor configured to drive the hydraulic pump,
wherein the transmission case is below the operator seat, and
wherein the pump motor is between the operator seat and the transmission case in a side view.

3. The tractor according to claim 1 , further comprising:
a work device;
a link mechanism disposed on the transmission case, configured to be raised and lowered, and joined to the work device; and
a work motor configured to supply motive power to the work device, and
wherein the work motor is in the link mechanism.

4. The tractor according to claim 1 , further comprising:
a support platform attached to front upper portions of the left and right body frames,
wherein the inverter is mounted on the support platform.

Assignees

• Kubota Kk

Inventors

• Ono Kohei
• Nagayama Takashi

Classifications

• B62D49/0671

  the driver riding on the tractor · CPC title

• B60L2200/40

  Working vehicles · CPC title

• B60K17/28

  characterised by arrangement, location, or type of power take-off · CPC title

• B60K17/04

  characterised by arrangement, location or kind of gearing · CPC title

• B60K1/00 Primary

  Arrangement or mounting of electrical propulsion units (B60K7/00 takes precedence; arrangement or mounting of plural diverse prime-movers for mutual or common propulsion B60K6/00) · CPC title