公开(公告)号：US11161546B2

公开(公告)日：2021-11-02

申请号：US16332179

申请日：2017-07-31

Applicant: KOMATSU LTD.

Inventor： Kei Nakano ,  Hiroki Yamamoto ,  Kazuki Kure ,  Souichi Tsumura

IPC: B62D11/08 ,  B60T11/21 ,  B62D11/18 ,  E02F9/20 ,  G05G1/01 ,  F16D67/04

Abstract: When left and right steering levers are both operated and the operation amount of the left lever is larger than that of the right lever, a controller calculates a correction left operation amount of the left lever according to the operation amount of the right lever, and controls a left steering clutch so as to cause a vehicle body to turn toward the left in accordance with the correction left operation amount. When left and right steering levers are both operated and the operation amount of the right lever is larger than that of the left lever, the controller calculates a correction right operation amount of the right lever according to the operation amount of the left lever, and controls a right steering clutch so as to cause the vehicle body to turn toward the right in accordance with the correction right operation amount.

公开(公告)号：US09617126B2

公开(公告)日：2017-04-11

申请号：US14348675

申请日：2013-10-31

Applicant: KOMATSU LTD.

Inventor： Takuya Uemura ,  Yasuhiko Takeuchi ,  Hiroki Yamamoto ,  Kazumasa Teramoto

IPC: B66C23/44 ,  B66D1/36 ,  F16L1/028

CPC classification number: B66C23/44 ,  B66D1/36 ,  F16L1/028 ,  F16L1/065

Abstract: A restraining roller of a hook winch has a roller middle part and first and second roller end parts. The roller middle part is formed in a columnar shape. Each of the first and second roller end parts is formed in a roughly circular truncated cone shape. The widths of the first and second roller end parts are greater than the diameter of a wire rope. A difference in diameter between an inner end and outer end of each of the first and second roller end parts is less than the diameter of the wire rope. Taper angles of the first and second roller end parts are different from each other.

公开(公告)号：US11536006B2

公开(公告)日：2022-12-27

申请号：US16332148

申请日：2017-07-31

Applicant: KOMATSU LTD.

Inventor： Kei Nakano ,  Hiroki Yamamoto ,  Kazuki Kure ,  Souichi Tsumura

IPC: B62D55/06 ,  E02F9/20 ,  B62D1/12 ,  B62D11/00 ,  E02F9/02 ,  B62D11/08 ,  E02F9/22

Abstract: A controller controls the steering device so as to cause a vehicle body to turn toward the left when a left steering lever is operated without a right steering lever being operated. The controller controls the steering device so as to cause the vehicle body to turn toward the right when the right steering lever is operated without the left steering lever being operated. The controller reduces the rotation speed of the engine when both the left steering lever and the right steering lever are operated and both the operation amount of the left steering lever and the operation amount of the right steering lever are equal to or greater than a first threshold.

公开(公告)号：US11255074B2

公开(公告)日：2022-02-22

申请号：US15540292

申请日：2016-03-03

Applicant: KOMATSU LTD.

Inventor： Hiroki Yamamoto ,  Shinichiro Hosoya ,  Takashi Noda

IPC: E02F3/76 ,  E02F9/20 ,  B60K31/00 ,  F02D29/02 ,  F02D29/04 ,  F02D41/02 ,  F02D41/04 ,  F02D41/10 ,  B62D11/00 ,  E02F3/84

Abstract: A control system for a work vehicle includes an acceleration detection device and a controller. The acceleration detection device detects an acceleration of the work vehicle. The controller determines whether the acceleration is greater than a first threshold and reduces the a vehicle speed when the acceleration continues to be equal to or greater than the first threshold over a predetermined first determination time period.