公开(公告)号：US20240318408A1

公开(公告)日：2024-09-26

申请号：US18577759

申请日：2022-07-27

Applicant: KOMATSU LTD.

Inventor： Ken NISHIHARA ,  Eiji ISHIBASHI

IPC: E02F9/26 ,  E02F9/22

CPC classification number: E02F9/26 ,  E02F9/264 ,  E02F9/2203

Abstract: The system includes a vehicle body sensor attached to a vehicle body of a work machine, a work implement sensor attached to a work implement of the work machine to detect a roll angle of the work implement, and a controller communicably connected to the sensors. The vehicle body sensor detects roll, pitch, and yaw angles of the vehicle body. The controller acquires the roll and pitch angles of the vehicle body detected by the vehicle body sensor, acquires the roll angle of the work implement detected by the work implement sensor, calculates a yaw angle error of the vehicle body sensor with respect to the vehicle body based on the pitch angle of the vehicle body and a difference between the roll angle of the vehicle body and the roll angle of the work implement, and calibrates the vehicle body sensor using the yaw angle error.

公开(公告)号：US20240295096A1

公开(公告)日：2024-09-05

申请号：US18571972

申请日：2022-07-27

Applicant: KOMATSU LTD.

Inventor： Ken NISHIHARA ,  Eiji ISHIBASHI ,  Takuya SONODA

IPC: E02F3/84 ,  E02F3/90 ,  E02F9/26

CPC classification number: E02F3/841 ,  E02F3/907 ,  E02F9/265

Abstract: A system includes a work implement sensor attached to a work implement to detect work implement roll and pitch angles, and a controller. The controller acquires an actual frame length, a position of the first body connecting portion, and the roll and pitch angles. The controller calculates an assumed position of the first frame connecting portion when the yaw angle is assumed to be a predetermined angle based on the roll and pitch angles in the first posture, an assumed frame length indicating a distance between the assumed position of the first frame connecting portion and the first body connecting portion, the yaw angle of the work implement in the first posture based on a difference between the actual and assumed frame lengths, and a position of the predetermined portion of the work implement based on the roll, pitch and yaw angles of the work implement in the first posture.

公开(公告)号：US20240191471A1

公开(公告)日：2024-06-13

申请号：US18554681

申请日：2022-05-31

Applicant: KOMATSU LTD.

Inventor： Ken NISHIHARA ,  Eiji ISHIBASHI

IPC: E02F9/20 ,  E02F9/08 ,  E02F9/26

CPC classification number: E02F9/2029 ,  E02F9/265 ,  E02F9/0841

Abstract: A work machine includes a vehicle body, a lift frame rotatably supported about a lift axis, a blade rotatably supported about a pitch axis with respect to the lift frame, a lift actuator, a pitch actuator, a sensor detects a current blade tip position of the blade, and a controller. The controller acquires actual topography data indicative of an actual topography to be worked, acquires target topography data indicative of a target topography, and controls the lift actuator so that a blade tip of the blade moves according to the target topography. The controller controls the pitch actuator so that a pitch angle of the blade is changed based on a positional relationship in a vertical direction between any two of the actual topography corresponding to the current blade tip position, the target topography corresponding to the current blade tip position, and the current blade tip position.

公开(公告)号：US20240044104A1

公开(公告)日：2024-02-08

申请号：US18554702

申请日：2022-05-31

Applicant: KOMATSU LTD.

Inventor： Ken NISHIHARA ,  Eiji ISHIBASHI

IPC: E02F3/84 ,  E02F9/26

CPC classification number: E02F3/844 ,  E02F9/265

Abstract: A work machine includes a vehicle body including a travel device, a blade supported so as to be rotatable about a pitch axis with respect to the vehicle body, a pitch actuator configured to cause the blade to perform a pitch motion about the pitch axis, and a controller. The determines whether a slip occurs on the travel device during work with the blade, and causes the blade to perform the pitch motion in a backward tilt direction upon determining that the slip occurs.

公开(公告)号：US20170073929A1

公开(公告)日：2017-03-16

申请号：US14889530

申请日：2015-09-14

Applicant: KOMATSU LTD.

Inventor： Yutaka TANAKA ,  Takeshi KAMIMAE ,  Ken NISHIHARA ,  Yasufumi OHCHI

IPC: E02F9/08 ,  B62D25/24 ,  B60K11/04

CPC classification number: E02F9/0866 ,  B60K11/04 ,  B60Y2200/41 ,  B60Y2200/415 ,  B62D25/10 ,  B62D25/24 ,  B62D49/00 ,  E02F3/34 ,  E02F9/0891

Abstract: An engine compartment accommodates an engine. A cooling device is configured to cool the engine. A cooling compartment accommodates the cooling device. A division wall is disposed between the engine compartment and the cooling compartment. A ventilation portion includes a hole for permitting air to pass therethrough and is provided on a top surface of the engine compartment. A water receiving member is disposed under the ventilation portion within the engine compartment. A water catchment member is disposed in the cooling compartment and catches water received by the water receiving member. A drainage pathway is connected to the water catchment member and leads the water to a predetermined drainage position.

Abstract translation: 发动机舱可容纳发动机。 冷却装置被配置为冷却发动机。 冷却室装有冷却装置。 在发动机室和冷却室之间设有分隔壁。 通风部包括用于允许空气通过的孔，并且设置在发动机室的顶表面上。 在发动机室内的通风部分的下方配置有水接收部件。 集水部件设置在冷却室中并且捕获由受水部件接收的水。 排水通道连接到集水构件，并将水引导到预定的排水位置。