公开(公告)号：US20240151000A1

公开(公告)日：2024-05-09

申请号：US18549091

申请日：2022-01-20

申请人： KOMATSU LTD.

发明人： Akira TAKENO ,  Toshitaka KUROSAWA

IPC分类号： E02F9/20 ,  E02F3/34 ,  E02F9/02 ,  E02F9/22 ,  E02F9/26

CPC分类号： E02F9/2083 ,  E02F9/02 ,  E02F9/261 ,  E02F3/34 ,  E02F9/2292 ,  E02F9/2296

摘要： A work machine includes a vehicle body, an object detecting section, a state detecting section, and a control section. The vehicle body includes a traveling unit and a work implement disposed on the traveling unit. The object detecting section detects an object in a periphery of the vehicle body. The state detecting section detects at least one state of an inclination of the vehicle body, an articulation of the vehicle body and the work implement. The control section sets a deceleration using automatic braking when the object is detected, based on a relationship, with which the vehicle body is stoppable, between a stable range in a lateral direction and a center of gravity position. The relationship is obtained from detection information of the state detecting section.

公开(公告)号：US20220074169A1

公开(公告)日：2022-03-10

申请号：US17419544

申请日：2020-03-31

申请人： KOMATSU LTD.

发明人： Akira TAKENO ,  Ryota ENOMOTO ,  Koshiro KODO ,  Naoki UCHIDA ,  Shinobu SHIMANAKA ,  Shogo MIYAZAKI

IPC分类号： E02F9/20 ,  B60W10/04 ,  B60W10/10 ,  B60W10/18 ,  B60W30/18 ,  E02F9/22

摘要： A control device of a work vehicle includes a braking force function determination unit and a required braking force function determination unit. The braking force function determination unit determines at least one of an offset and an inclination for a required braking force in a braking force function which indicates a relationship between a rotational speed of an output shaft of a transmission and the required braking force and in which the required braking force monotonically increases with respect to the rotational speed such that the smaller a stage number of a selected speed stage which is input into a traction force instruction device, the larger an absolute value of at least one of the offset and the inclination. The required braking force function determination unit determines the required braking force based on the rotational speed of the output shaft of the transmission and the braking force function.

公开(公告)号：US20240151009A1

公开(公告)日：2024-05-09

申请号：US18549011

申请日：2022-01-20

申请人： KOMATSU LTD.

发明人： Akira TAKENO ,  Shinichi KITAO ,  Akihiro KOYAMA

IPC分类号： E02F9/26 ,  E02F9/20 ,  E02F9/22

CPC分类号： E02F9/262 ,  E02F9/2083 ,  E02F9/226

摘要： A work machine includes a vehicle body, a travel direction detecting section that detects a travel direction of the vehicle body, an object detecting section that detects an object in a predetermined direction of the vehicle body, a braking section, a setting section. and a control section. The braking section is able to implement automatic braking of the vehicle body and exert a braking force based on a detection of the object. The setting section sets the braking section so that the automatic braking force can be or cannot be exerted. The control section controls the setting section to set the braking section so that the braking force can be exerted when the vehicle body is traveling in the predetermined direction, and to set the braking section so that the braking force cannot be exerted when the vehicle body is traveling in a direction other than the predetermined direction.

公开(公告)号：US20230287657A1

公开(公告)日：2023-09-14

申请号：US18004352

申请日：2021-07-19

申请人： KOMATSU LTD.

发明人： Kazuyoshi OKABE ,  Shinichi KITAO ,  Akira TAKENO

IPC分类号： E02F9/24 ,  E02F9/26 ,  E02F3/28 ,  E02F9/20

CPC分类号： E02F9/24 ,  E02F9/26 ,  E02F3/283 ,  E02F9/2033

摘要： A work machine includes a vehicle body, a rearward detecting section, and a control section. The vehicle body includes a traveling unit and a work implement disposed in front of the traveling unit. The rearward detecting section is configured to detect an object when traveling in reverse due to driving of the traveling unit. The control section is configured to decide to validate or invalidate a first control according to a detection of the object, a state of traveling in reverse, and a scooping work state by the work implement. The control section is configured to decide to validate the first control based on the scooping work state when the first control is invalidated.

公开(公告)号：US20210372089A1

公开(公告)日：2021-12-02

申请号：US17289423

申请日：2019-11-07

申请人： KOMATSU LTD.

发明人： Kenichi YAMADA ,  Shogo MIYAZAKI ,  Akira TAKENO ,  Shota YAMAWAKI

IPC分类号： E02F9/22 ,  E02F9/20 ,  F16H61/4008 ,  F16H61/4157 ,  F16H61/472 ,  F15B15/18 ,  F04D13/02 ,  F04D15/00

摘要： A control device for a power machine includes a target circuit pressure specifying unit configured to specify a target circuit pressure of the hydrostatic continuously variable transmission, a measurement value acquisition unit configured to acquire an actual circuit pressure of the hydrostatic continuously variable transmission, a brake torque determination unit configured to determine a brake torque based on the target circuit pressure and the actual circuit pressure, and a pump control unit configured to control the hydraulic pump based on the brake torque. The brake torque is a torque consumed by the hydraulic pump.