Blade control device and blade control method

    公开(公告)号:US11933018B2

    公开(公告)日:2024-03-19

    申请号:US17047881

    申请日:2019-01-28

    申请人: Komatsu Ltd.

    IPC分类号: E02F3/84 E02F9/26

    CPC分类号: E02F3/844 E02F9/262

    摘要: A blade control device includes: a corrected design surface generation unit that generates a corrected design surface connecting a first surface existing in front of a work vehicle and a second surface having a different slope from a slope of the first surface on an initial design surface indicating a target shape of an excavation object to be excavated using a blade of the work vehicle; and a blade control unit that outputs a control command to control a height of the blade based on the corrected design surface.

    Index-value determination device and index-value determination method

    公开(公告)号:US11905685B2

    公开(公告)日:2024-02-20

    申请号:US17262349

    申请日:2019-03-12

    申请人: Komatsu Ltd.

    IPC分类号: E02F9/26 G07C5/08 G07C5/12

    摘要: A state data acquisition unit acquires state data indicating a state of a work machine at a plurality of times. A work determination unit determines a classification of a work of the work machine for each of the plurality of times based on the acquired state data. A period determination unit determines a start point and an end point of a period related to a predetermined classification among determined classifications of works. An index-value determination unit obtains an index value of the state of the work machine from the start point to the end point.

    WORK MACHINE SURROUNDINGS MONITORING SYSTEM, WORK MACHINE, AND WORK MACHINE SURROUNDINGS MONITORING METHOD

    公开(公告)号:US20240052602A1

    公开(公告)日:2024-02-15

    申请号:US18269578

    申请日:2022-01-31

    申请人: Komatsu Ltd.

    IPC分类号: E02F9/26 H04N5/262 H04N23/90

    摘要: A work machine surroundings monitoring system includes a first display image generation unit that generates a first display image indicating surroundings of a work machine on the basis of a camera image of a camera that captures an image of the surroundings of the work machine, a second display image generation unit that generates a second display image in a display mode different from that of the first display image on the basis of camera images of a plurality of cameras that capture images of the surroundings of the work machine, and a display control unit that generates a signal for displaying the first display image on a part of a display screen, displaying the second display image on a part of the display screen, and displaying a boundary image at a boundary between the first display image and the second display image on the display screen.

    TRANSMISSION SYSTEM FOR WORK MACHINE
    54.
    发明公开

    公开(公告)号:US20240044402A1

    公开(公告)日:2024-02-08

    申请号:US18554728

    申请日:2022-05-13

    申请人: KOMATSU LTD.

    发明人: Manabu NAKAMURA

    IPC分类号: F16H59/16 F16H61/04

    CPC分类号: F16H59/16 F16H61/0437

    摘要: A transmission system includes a transmission, first and second composite sensors, and a controller. The transmission has a clutch switchable between an engaged state and a disengaged state, a first shaft disposed on an input side of the clutch, and a second shaft disposed on an output side of the clutch. The first and second composite sensors detect rotation speeds and rotation phases of the first and second shafts, respectively. The controller acquires a load torque applied to the transmission. When the clutch is switched from the disengaged state to the engaged state, the controller derives a phase difference between the rotation phase of the first shaft detected by the first composite sensor and the rotation phase of the second shaft detected by the second composite sensor based on the time when the clutch has stopped slipping. The controller acquires the load torque based on the derived phase difference.

    TURBO TYPE PUMP AND FLUID SUPPLY UNIT
    56.
    发明公开

    公开(公告)号:US20240035484A1

    公开(公告)日:2024-02-01

    申请号:US18265484

    申请日:2022-01-31

    申请人: Komatsu Ltd.

    IPC分类号: F04D29/42 F04D1/00 F04D13/12

    摘要: A turbo type pump configured to pressurize a fluid and supply the fluid to a downstream side of a fluid passage by rotation of an impeller provided in the fluid passage, includes: a reduced-diameter portion having a reduced inner diameter in a state of forming a reverse surface facing a downstream side, the reduced-diameter portion being provided at a portion located on an upstream side of the impeller in the fluid passage; and a reverse partition wall portion provided in the reverse surface and configured to restrict a flow of the fluid in a circumferential direction.