公开(公告)号：US10787788B2

公开(公告)日：2020-09-29

申请号：US15757084

申请日：2017-07-14

Applicant: KOMATSU LTD.

Inventor： Takeo Yamada ,  Ayumi Ohkuma ,  Toru Matsuyama

IPC: E02F3/43 ,  E02F9/20 ,  E02F9/22 ,  E02F9/26 ,  E02F3/32

Abstract: A work machine according to an aspect includes: a dipper stick; a boom; a cylinder for driving the boom; an operation apparatus for operating the dipper stick; and a controller for performing intervention control by using the boom in accordance with an operation command issued from the operation apparatus to achieve land grading. The controller determines whether or not the operation command from the operation apparatus indicates an amount greater than or equal to a predetermined amount, and corrects a speed of the cylinder when the operation command from the operation apparatus indicates an amount greater than or equal to the predetermined amount.

公开(公告)号：US11047108B2

公开(公告)日：2021-06-29

申请号：US15756240

申请日：2017-07-14

Applicant: KOMATSU LTD.

Inventor： Tom Matsuyama ,  Ayumi Ohkuma ,  Takeo Yamada

IPC: E02F3/43 ,  E02F9/22 ,  E02F3/32 ,  E02F9/20

Abstract: A work machine according an aspect includes a work implement, an operation apparatus for operating the work implement, and a controller for controlling the work implement. The controller performs intervention control for lowering the work implement based on an operation command from the operation apparatus, and reduces a speed of the work implement during the intervention control to stop the work implement before completion of the intervention control.