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：US11732438B2

公开(公告)日：2023-08-22

申请号：US16891939

申请日：2020-06-03

Applicant: KOMATSU LTD.

Inventor： Takuya Uemura ,  Yusuke Yamazaki ,  Kei Nakano ,  Masahiro Ikeda

IPC: E02F3/84 ,  E02F3/76 ,  E02F9/20

CPC classification number: E02F3/844 ,  E02F3/7613 ,  E02F3/7618 ,  E02F9/2004

Abstract: A controller determines that a signal from an operating device represents either a normal operation to manually control a blade or a trigger operation to automatically control the blade. The controller moves the blade so that the angle of the blade is changed in accordance with the operation of the operating device when the signal from the operating device is determined as representing a normal operation. The controller moves the blade until the angle of the blade reaches a predetermined target angle when the signal from the operating device is determined as representing the trigger operation while the bulldozer is traveling.

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.