公开(公告)号：US10759337B2

公开(公告)日：2020-09-01

申请号：US15819053

申请日：2017-11-21

Applicant: KOMATSU LTD.

Inventor： Takeshi Kamimae ,  Nobuo Matsuyama ,  Shintaro Kobayashi ,  Muneo Harada

IPC: B60Q1/50 ,  E01H5/06 ,  B60Q1/26

Abstract: A work vehicle includes a blade, a shutter, a notification unit, and a controller. The blade includes a lower end. The shutter is attached to the blade. The shutter can be alternatively disposed at a first position at which the shutter protrudes forward from the lower end of the blade or at a second position at which the shutter is farther away from the lower end than at the first position. The notification unit is configured to notify surroundings of the work vehicle about information of the work vehicle. The controller is configured to change information notified by the notification unit in accordance with an arrangement of the shutter at one of the first position and the second position.

公开(公告)号：US10745873B2

公开(公告)日：2020-08-18

申请号：US15819018

申请日：2017-11-21

Applicant: KOMATSU LTD.

Inventor： Takeshi Kamimae ,  Nobuo Matsuyama ,  Shintaro Kobayashi ,  Muneo Harada

IPC: E01H5/06

Abstract: A work vehicle allowing a simplified operation to open and close a shutter in a simple configuration is provided. The shutter can be disposed alternatively at a first position at which the shutter protrudes forward from a lower end of a blade or at a second position at which the shutter is farther away from the lower end than at the first position. The controller is configured to receive an input of an operation instruction from an input operation unit for moving the shutter from the second position to the first position, to cause the shutter to move from the second position to the first position. After a lapse of a prescribed time period since the shutter is moved to the first position, the controller causes the shutter to move from the first position to the second position.

公开(公告)号：US20180355569A1

公开(公告)日：2018-12-13

申请号：US15819018

申请日：2017-11-21

Applicant: KOMATSU LTD.

Inventor： Takeshi Kamimae ,  Nobuo Matsuyama ,  Shintaro Kobayashi ,  Muneo Harada

IPC: E01H5/06

CPC classification number: E01H5/066 ,  E01H5/061

Abstract: A work vehicle allowing a simplified operation to open and close a shutter in a simple configuration is provided. The shutter can be disposed alternatively at a first position at which the shutter protrudes forward from a lower end of a blade or at a second position at which the shutter is farther away from the lower end than at the first position. The controller is configured to receive an input of an operation instruction from an input operation unit for moving the shutter from the second position to the first position, to cause the shutter to move from the second position to the first position. After a lapse of a prescribed time period since the shutter is moved to the first position, the controller causes the shutter to move from the first position to the second position.

公开(公告)号：US12084838B2

公开(公告)日：2024-09-10

申请号：US16971504

申请日：2019-02-26

Applicant: KOMATSU LTD.

Inventor： Shintaro Kobayashi ,  Yuki Arai ,  Takeshi Kamimae

IPC: E02F9/22 ,  B60K17/356 ,  B60K17/36 ,  B62D6/02 ,  B62D9/00 ,  B62D11/04 ,  B62D12/00 ,  E02F3/76 ,  E02F3/84 ,  E02F9/08

CPC classification number: E02F9/225 ,  B62D6/02 ,  B62D9/002 ,  B62D12/00 ,  E02F9/0841 ,  B60K17/356 ,  B60K17/36 ,  B62D11/04 ,  E02F3/7636 ,  E02F3/841 ,  E02F9/2292 ,  E02F9/2296

Abstract: A controller controls a first drive source and a second drive source based on a rotation speed of a right rear wheel measured by a rotation speed sensor and a rotation speed of a left rear wheel measured by a rotation speed sensor, to thereby independently control a rotation speed of each of a right front wheel and a left front wheel.

公开(公告)号：US11873623B2

公开(公告)日：2024-01-16

申请号：US16971530

申请日：2019-02-26

Applicant: KOMATSU LTD.

Inventor： Shintaro Kobayashi ,  Yuki Arai ,  Takeshi Kamimae

IPC: E02F9/22 ,  B62D6/02 ,  B62D12/00 ,  E02F3/76

CPC classification number: E02F9/225 ,  B62D6/02 ,  B62D12/00 ,  B60Y2200/411 ,  E02F3/7663

Abstract: A controller controls a first drive source and a second drive source based on a moving speed of a motor grader measured by a speed sensor and a turning angular velocity of the motor grader measured by an IMU, to thereby independently control a rotation speed of each of a right front wheel and a left front wheel.

公开(公告)号：US09644341B2

公开(公告)日：2017-05-09

申请号：US14781442

申请日：2013-06-17

Applicant: KOMATSU LTD.

Inventor： Masashi Yoshimura ,  Yutaka Ono ,  Shintaro Kobayashi

IPC: E02F3/76 ,  E02F3/84

CPC classification number: E02F3/7668 ,  E02F3/764 ,  E02F3/7645 ,  E02F3/765 ,  E02F3/7654 ,  E02F3/844

Abstract: A circle rotator of a motor grader includes a worm, a worm wheel and a shaft. The worm wheel has an inner peripheral portion, an outer peripheral portion enclosing the inner peripheral portion from outside, and a plurality of first clutch discs to be spline-coupled to the inner peripheral surface of the inner peripheral portion. The inner peripheral portion is made of a material harder than a material of which the outer peripheral portion is made.