公开(公告)号：US12037767B2

公开(公告)日：2024-07-16

申请号：US17440922

申请日：2020-05-22

Applicant: KOMATSU LTD.

Inventor： Tomoki Konda ,  Kenjiro Shimada ,  Kazuhiro Hatake ,  Yusuke Saigo

IPC: E02F9/10 ,  E02F9/26 ,  E02F3/32

CPC classification number: E02F9/10 ,  E02F9/26 ,  E02F3/32

Abstract: A work machine comprises: a travel unit; a swing unit provided on the travel unit swingably; an angular velocity sensor that is attached to the swing unit and outputs an azimuthal angular velocity of the swing unit; a measurement device that measures an azimuth of the swing unit; and a controller that corrects the azimuthal angular velocity based on azimuth information measured by the measurement device and controls the swing unit based on the corrected azimuthal angular velocity.

公开(公告)号：US12024851B2

公开(公告)日：2024-07-02

申请号：US17267061

申请日：2019-08-28

Applicant: KOMATSU LTD.

Inventor： Tomoki Konda ,  Kazuhiro Hatake ,  Takeshi Oi ,  Masanori Aizawa

IPC: E02F3/43 ,  E02F3/32 ,  E02F9/20

CPC classification number: E02F3/439 ,  E02F3/32 ,  E02F9/2037 ,  E02F9/2041

Abstract: A loading machine includes a swing body and work equipment with a bucket. A control device of the loading machine includes a loading target specifying unit that specifies a position and shape of a loading target, an avoidance position specifying unit, and a movement processing unit. The avoidance position specifying unit specifies an interference avoidance position based on the position and shape of the loading target. The movement processing unit outputs an operation signal to drive only the swing body until the bucket reaches the interference avoidance position from a loading position above the loading target, to cause the bucket to move to the interference avoidance position. The movement processing unit outputs an operation signal to drive the swing body and the work equipment after the bucket has reached the interference avoidance position, to cause the bucket to move to an excavation position above an excavation target.

公开(公告)号：US11753792B2

公开(公告)日：2023-09-12

申请号：US16644747

申请日：2018-08-13

Applicant: Komatsu Ltd.

Inventor： Tomoki Konda ,  Yusuke Saigo ,  Ryuta Okuwaki ,  Kazuhiro Hatake

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

CPC classification number: E02F3/435 ,  E02F3/32 ,  E02F3/437 ,  E02F3/439 ,  B60Y2200/412 ,  E02F9/2004 ,  E02F9/2296 ,  E02F9/264

Abstract: A movement processing unit is configured to generate operation signals of a work equipment and a swing body for moving a bucket to a loading point based on a start command of an automatic movement of the bucket. A stop processing unit is configured to brake a swing of the swing body based on a stop command of the automatic movement of the bucket, and is further configured to generate an operation signal for retreating the work equipment when a height of the bucket is lower than the loading point.

公开(公告)号：US11118326B2

公开(公告)日：2021-09-14

申请号：US16652735

申请日：2019-02-27

Applicant: Komatsu Ltd.

Inventor： Yusuke Saigo ,  Kazuhiro Hatake

IPC: E02F9/12 ,  E02F9/22 ,  F15B11/10 ,  F15B13/02 ,  F15B21/08 ,  E02F3/30

Abstract: A control device generates an operation signal for controlling a pressure of hydraulic oil on a downstream side of the swing motor in a hydraulic device based on an azimuth direction, a swing speed, and a target stopping azimuth direction of a swing body during braking of a swing motor.