Kubota Corporation

Kubota Corporatin

Norita Tottori

Hironobu Nogami

Daisuke Nakayama

Ryosuke Tanaka

Daisuke Miyazaki

Naoya Okamoto

Tsuyoshi Gono

Keiji Takahashi

Maho Yamanaka

Renta Kasai

Shinji Fujimoto

Tadashi Nakamura

Tatsuya Sakai

Hideaki Ezaki

Keita Ono

Satoru Yamanaka

Akiya Shibutani

Masafumi Oshita

Takamasa Maeda

Takefumi Oguri

Shota Nakano

A work vehicle includes a battery, an operating apparatus to be supplied with power from the battery, an operating apparatus manager to manage operation of the operating apparatus, a reporting device in a driver's section, a voltage drop amount detector to detect an amount of voltage drop in the battery, and a voltage drop manager to report voltage drop information via the reporting device in response to the amount of voltage drop exceeding a permissible value during operation of the operating apparatus.

Work vehicle, program, recording medium, and method

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

A utility vehicle includes a fixing portion to which a lamp is fixed, and a support portion that supports the fixing portion and is capable of switching a position of the fixing portion between a use position where at least a portion of the lamp is located outside a vehicle body with respect to a fender and a storage position where the lamp is located inside the vehicle body with respect to the fender.

Working vehicle

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

A work vehicle includes a diesel engine, a heater to heat a gas to be supplied to a combustion chamber of the diesel engine, and a controller to execute an afterglow routine to cause the heater to operate. The controller is configured or programmed to execute the afterglow routine in response to the diesel engine being started, an elapse of a predetermined stop time since an end of a previous execution of the afterglow routine, and the work vehicle being in a warming-up state.

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.

Tractor

A PTO shaft driving device in a working machine, includes a parking switch to detect parking of a vehicle body, a first switch located on a manipulator located on the vehicle body to output a PTO shaft control command that is either a driving command to drive a PTO shaft located on the vehicle body or a stopping command to stop the PTO shaft, a second switch located at a position different from the manipulator to output a PTO shaft control command that is either a driving command to drive the PTO shaft or a stopping command to stop the PTO shaft, a first permission switch to selectively permit or prohibit a stationary work when the parking switch detects the parking, and a controller configured or programmed to control driving of the PTO shaft. The controller is configured or programmed to selectively drive or stop the PTO shaft according to the PTO shaft control command from the first switch or the second switch when the stationary work is permitted by the first permission switch.

PTO shaft driving device in working machine

A valve unit (V) has a valve housing () that includes a supply oil passage () configured to receive operating oil from a hydraulic pump, and a pressure adjustment valve (Va) configured to adjust the pressure of the supply oil passage (). The pressure adjustment valve (Va) includes a pressure adjustment valve body () configured to open and close the supply oil passage (), a compression coil spring () that keeps the pressure adjustment valve body () at a closed position when the pressure of the supply oil passage () is smaller than a set value and allows the pressure adjustment valve body () to open when the pressure of the supply oil passage () is not smaller than the set value, and a restriction member () configured to, when the pressure adjustment valve body () becomes open against the urging force of the spring () in response to a pressure of the operating oil, abut against the pressure adjustment valve body () to restrict movement of the pressure adjustment valve body ().

Valve unit

An operating mechanism of a work vehicle includes: an operating portion that is provided to a side console disposed beside a seat and can be operated by an operator; and a switching portion capable of switching between a used state in which the operating portion can be used and a non-used state in which the operating portion cannot be used.

Operating mechanism of work vehicle

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

Norita Tottori