Kubota Corporation

Kubota Corporatin

Daisuke Nakayama

Hironobu Nogami

Norita Tottori

Daisuke Miyazaki

Renta Kasai

Norihide Iwata

Katsumi Yanagihara

Keita Ono

Naoya Okamoto

Naoto Mantoku

Takefumi Oguri

A tractor includes a three-point linkage to which a tiller is mountable, a hydraulic lifting/lowering driver to lift and lower the three-point linkage, and a mechanical linkage to transmit a lifting/lowering operation amount of the three-point linkage to the lifting/lowering driver. The mechanical linkage includes a load detector to detect an amount of change in traction load via the three-point linkage, a cable to interlock according to the amount of change in the traction load detected by the load detector, and a mechanical linkage interlocked and connected to the cable and the lifting/lowering driver, the mechanical linkage being capable of transmitting the lifting/lowering operation amount according to the amount of change in the traction load to the lifting/lowering driver.

Tractor having mechanical linkage for selective draft control or depth control

An electric work vehicle includes a travel battery, an auxiliary battery, a motor drivable on electric power supplied by the travel battery, a travel device drivable by the motor, a voltage converter positioned forward of the travel battery to step down a voltage of electric power from the travel battery and supply the electric power to the auxiliary battery, and a radiator positioned forward of the travel battery, wherein the voltage converter and the radiator are laterally next to each other in a plan view.

Airflow arrangement for cooling an electric work vehicle

An electric work vehicle includes a battery, a motor positioned under the battery and drivable on electric power supplied by the battery, a travel device drivable by the motor, an inverter positioned under the battery and forward of the motor to convert direct-current electric power from the battery into alternating-current electric power and supply the alternating-current electric power to the motor, and a transmission positioned backward of the battery to transmit a driving force of the motor to the travel device, wherein the motor and the inverter are arranged in a front-back direction of a machine body.

Electric work vehicle

An electric work vehicle includes a driver section that an operator is able to enter, a battery positioned forward of the driver section, a motor drivable on electric power supplied by the battery, a travel device drivable by the motor, a cover including an accommodation space inside and capable of being opened and closed, wherein the battery includes an electricity storage to store electric power and a battery cover hermetically accommodating the electricity storage, and the battery cover includes an outer wall surface defining a portion of an exterior of the electric work vehicle.

Electric work vehicle including battery enclosure structure

An electric work vehicle includes: a travel battery, an auxiliary battery, a motor drivable on electric power supplied by the travel battery, a travel device drivable by the motor, a voltage converter positioned forward of the travel battery to step down a voltage of electric power from the travel battery and supply the electric power to the auxiliary battery, and a radiator positioned forward of the travel battery, wherein the voltage converter and the radiator are laterally next to each other in a plan view.

Cooling arrangement for electric work vehicle

An electric work vehicle includes a body frame, a battery above the body frame, a motor drivable on electric power supplied by the battery, a travel device drivable by the motor, and a cooling fan positioned forward of the battery to send cooling air to the battery, wherein the body frame and the battery define a ventilation space therebetween, and the cooling fan extends in an up-down direction of a machine body to face both the battery and the ventilation space.

An electric work vehicle includes a work device, a battery, a motor drivable on electric power supplied by the battery, a travel device drivable by the motor, and a hydraulic pump positioned next to the motor and drivable by the motor to supply operating fluid to an operating mechanism of the work device.

A work machine includes a transmission case () extending in the front-back direction of a machine body, a first hydraulic unit (V) provided on one of mutually opposite wall portions () of the transmission case (), a second hydraulic unit () provided on a second one of the wall portions (), and a supply passage () configured to supply operating oil from the first hydraulic unit (V) to the second hydraulic unit (). The first hydraulic unit (V) and the second hydraulic unit () are aligned to be overlapped with each other as viewed in a direction orthogonal to a case axis (X) extending along the front-back direction of the transmission case (). The supply passage () extends inside the transmission case () in a straight line orthogonal to the case axis (X).

Growing community of inventors

Sakai, Japan

Daisuke Nakayama