Kubota Corporation

Keiji Takahashi

Takashi Kobayashi

Shigeru Komatsu

Yoshihiro Kushita

Susumu Umemoto

Shinnosuke Ishikawa

Tsuyoshi Gono

Norita Tottori

Tatsuya Sakai

Susumu Takeoka

Naoya Okamoto

Naoya Nihei

Eiji Nishi

Ryosuke Tanaka

Yuji Hirase

Shusaku Yamaguchi

Ryuji Kitagawa

Keita Ono

Yoichi Sugihara

Shota Nakano

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

A working vehicle includes: a vehicle body provided with a traveling device; a hydraulic pump including a swashplate configured to change an output of the hydraulic pump according to a swashplate angle; a traveling motor including an output shaft having a rotation speed variable according to the output of the hydraulic pump and capable of transmitting power of the output shaft to the traveling device; an angle detector configured to detect the swashplate angle that is an angle of the swashplate; and a swashplate control unit configured to control the swashplate angle on the basis of control information relating to control of the swashplate angle and an actual swashplate angle that is the swashplate angle detected by the angle detector.

Working vehicle

The work vehicle includes a vehicle body provided with a travel device; a prime mover provided in the vehicle body; a transmission device capable of speed-changing a driving force from the prime mover and transmitting the driving force to the travel device; a transmission case housing the transmission device and being filled with lubricating oil; and a controller capable of switching between a warm-up operation mode in which a gear of the transmission device is rotated in a state in which transmission of power from the transmission device to the travel device is blocked and a travel operation mode in which the gear is rotated in a state in which the power is transmitted from the transmission device to the travel device.

A work vehicle includes an engine, a transmission to change a received rotational force to a rotational force at a gear ratio that corresponds to a desired vehicle speed and output the changed rotational force, a first operating tool to change the rotation speed of the engine and a deceleration rate of the transmission, a rotation speed controller to control the rotation speed of the engine based on an input provided to the first operating tool, and a second operating tool to receive a holding instruction to hold the rotation speed of the engine constant. In response to the holding instruction being inputted to the second operating tool, the rotation speed controller is configured or programmed to disable control of the rotation speed of the engine which control is based on the input provided to the first operating tool, and hold the rotation speed of the engine constant in accordance with the holding instruction.

Work vehicle, control method, and recording medium

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 driving support information display device includes a status display area controller, a menu display area controller, and a status information controller. The status display area controller manages a status display area having a plurality of status display sections arranged vertically in one side area of a display screen. The menu display area controller manages an upper menu display area having a plurality of selection button sections arranged side by side in an upper area of the display screen and a lower menu display area having a plurality of selection button sections arranged side by side in a lower area of the display screen. The status information controller displays status information in the status display section by providing to the status display area controller status information relating to a functional module assigned to the selection button section that has been touch input.

Driving support information display configuration and device using the same

A lift control apparatus includes a height sensor that outputs a height detection signal after a height of a ground work apparatus is detected. The ground work apparatus is coupled to a traveling work vehicle via a lift mechanism. An upper limit manager sets an upper limit position of the ground work apparatus based on an operation input signal from an input operation device for an upper limit setting USD. A setting prohibitor prohibits, when the upper limit position being set by the operation input signal is lower than the height of the ground work apparatus based on the height detection signal, the setting of the upper limit position from the operation input signal, and setting the upper limit position to the height of the ground work apparatus based on the height detection signal.

Lift control apparatus for ground work apparatus

A traveling work vehicle includes a gear-shifting control unit that outputs a gear-shifting control command to a main gear-shifting apparatus for shifting gears without cutting off power transmission, a sub gear-shifting apparatus for shifting gears by cutting off power transmission, and a first operation unit and a second operation unit that provide gear-shifting, upshifting or downshifting, operation commands to the gear-shifting control unit. The gear-shifting control unit has a first travel control section that generates a gear-shifting control command for shifting gears in the main gear-shifting apparatus in response to the gear-shifting operation command from the first operation unit in a work traveling mode, and a second travel control section that generates a gear-shifting control command for shifting gears in the sub gear-shifting apparatus in response to the gear-shifting operation command from the second operation unit in the work traveling mode.

Traveling work vehicle

A speed control device in a traveling work vehicle changes a speed of rotational drive power from an engine to drive vehicle wheels and includes: a target speed calculator determining a target speed, based on operation deflection of a speed change device. A vehicle speed controller adjusting a speed change ratio based on the target speed. A vehicle speed obtainer obtaining an actual vehicle speed. A forcible target speed modifier forcibly modifying the target speed to a lower speed based on operation of a braking device. A release can treat an operation of the speed change device as a trigger to cancel the target speed forcibly modified by the forcible target speed modifier, and conforming the target speed to the actual vehicle speed.

Growing community of inventors

Osaka, Japan

Keiji Takahashi