Kubota Corporation

Go Takaki

Yukifumi Yamanaka

Sumio Yagyu

Fumitake Okunishi

Seiji Ohkubo

Seiji Norita

Kozo Nishikawa

Takahiro Uchi

Yuji Kato

Takashi Okuyama

Shigeki Hayashi

Hiroki Bessho

Shinichi Kawabata

Takao Nakagawa

Masaru Kawane

Shohei Nakai

Shunsuke Miyashita

Akihiro Kishimoto

Teruo Kunizawa

Takashi Uchida

Masatoshi Sakai

Junki Ito

Takahiro Takaki

Yoshiaki Araki

Takahito Matsumori

A working machine includes a battery unit; an electrical component; a radiator; an electrical-component cooling water channel along which cooling water delivered from an outflow port of the radiator is supplied to the electrical component and, after cooling the electrical component, circulates to an inflow port of the radiator; a switching unit provided on the electrical-component cooling water channel; and a battery cooling water channel along which the cooling water is supplied from the switching unit to the battery unit and, after cooling the battery unit, flows to the electrical-component cooling water channel. The switching unit is switchable between a first state of blocking a flow of the cooling water from the electrical-component cooling water channel to the battery cooling water channel and a second state of causing the cooling water to flow from the electrical-component cooling water channel to the battery cooling water channel.

Working machine

A swiveling working machine includes a swivel base; a working device provided on a front side of the swivel base; a battery unit; an electric motor that is driven by electric power output by the battery unit; and a hydraulic pump that delivers a hydraulic fluid by driving of the electric motor. The battery unit is disposed at a rear portion of the swivel base. The electric motor and the hydraulic pump are disposed sideward of the battery unit side by side in a front-rear direction.

Swiveling working machine

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.

Working device and working machine having the same

A spraying support system for a working machine, includes: a support device including a plan creator portion to create a spraying plan representing a relation between field information relating to a field to which spray substance is sprayed and spraying information including spraying amount of the spray substance; a plan obtainer device provided to a working machine having a sprayer device to spray the spray substance and configured to obtain the spraying plan created by the plan creator portion; and a spraying controller device to control a sprayer portion of the sprayer device based on the spraying information of the spraying plan obtained by the plan obtainer device.

Spraying support system for working machine

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.

Generator unit and working machine

A working machine includes: a first generator having: a rotor to be rotated by power from a PTO shaft; a rotor coil provided to the rotor; and a stator coil to generate electricity when magnetizing current is applied to the rotor coil; a working device to be operated by the electricity generated by the first generator; and a converter device to convert surplus electricity not consumed by the working device into the magnetizing current to be applied to the rotor coil.

Power system for a work vehicle

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 work vehicle includes an assist motor that is located opposite an engine with respect to a continuously variable transmission device. The assist motor has an output shaft that extends coaxially with a drive shaft of the continuously variable transmission device and is interlocked with the drive shaft. A motor support platform that supports the assist motor protrudes more outward than the continuously variable transmission device does in a lateral direction relative to a vehicle body. The motor support platform includes a slide movement mechanism, and the slide movement mechanism is configured to change the position at which the assist motor is attached, relative to the continuously variable transmission device, axially of the drive shaft, between a connected position and a disconnected position of the drive shaft and the output shaft.

Work vehicle

A hybrid vehicle includes an engine, a motor, and a belt stepless speed changer device having a driving rotary body, a driven rotary body, a first shaft member supporting the driving rotary body with allowing rotation thereof in unison, a second shaft member supporting the driven rotary body with allowing rotation thereof in unison, and an endless belt wound around the driving rotary body and the driven rotary body. The vehicle further includes a transmission case configured to receive the powers from the engine and the motor via the belt stepless speed changer device and a centrifugal clutch incorporated in a power transmission line extending form the engine to the first shaft member. The motor is disposed on the side opposite the engine across the driving rotary body, and the driving power of the motor is inputted to the first shaft member.

Hybrid vehicle

Disclosed is a shift power transmission apparatus for readily suppressing or avoiding size increase thereof. The apparatus includes an input shaft () receiving engine drive force, a hydraulic continuously variable transmission () driven by the input shaft (), a planetary power transmission section () combining drive force from the input shaft () and output from the hydraulic continuously variable transmission () for outputting the combined drive force, and an output rotary member () outputting power to a travel apparatus. The planetary power transmission section () and the output rotary member () are arranged on a side of the hydraulic continuously variable transmission () associated with an engine-coupled side of the input shaft (). The drive force is inputted to the planetary power transmission section () from a portion between the engine-coupled side and the hydraulic continuously variable transmission-coupled side of the input shaft ().

Shift power transmission apparatus and travel power transmission device

A work vehicle comprises: a vehicle frame; a driving portion in which a driver seat is provided; an electric motor for driving the vehicle to travel; and a battery for supplying electric power to the electric motor, the battery including a plurality of battery modules accommodated in a single battery pack. Each of the battery modules is formed as a rectangular box whose longitudinal length is different from its lateral length in a planar view, and the battery modules are arranged adjacent to each other with a short side of one of the battery modules opposing a long side of the other of the battery modules. The battery pack is also formed to conform to the contour of the aggregate of the battery modules.

Growing community of inventors

Sakai, Japan

Go Takaki