中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

12 records (took 0.016 seconds)

    WORK MACHINE
    1.
    发明申请
    WORK MACHINE 审中-公开

    公开(公告)号：US20200224388A1

    公开(公告)日：2020-07-16

    申请号：US15758059

    申请日：2017-06-27

    Applicant: KOMATSU LTD.

    Inventor： Takeo YAMADA ,  Shota NAKAMURA ,  Gousuke NAKASHIMA

    IPC: E02F9/22 ,  E02F9/16 ,  E02F3/32 ,  E02F3/42 ,  F15B13/06

    Abstract: A plurality of electromagnetic proportional control valves are configured to control a pressure of a pilot oil generated by operation of a first control lever device and a second control lever device and, in accordance with the pressure of the pilot oil, adjust a flow rate of a hydraulic oil supplied to hydraulic cylinders. The plurality of electromagnetic proportional control valves are divided into a first valve block including at least one of the electromagnetic proportional control valves and a second valve block including at least one of the electromagnetic proportional control valves. The first valve block and the second valve block are arranged to be separated from each other.

    WORK MACHINE AND CONTROL METHOD FOR WORK MACHINE
    2.
    发明申请
    WORK MACHINE AND CONTROL METHOD FOR WORK MACHINE 审中-公开

    公开(公告)号：US20190078289A1

    公开(公告)日：2019-03-14

    申请号：US15756656

    申请日：2017-07-14

    Applicant: KOMATSU LTD.

    Inventor： Toru MATSUYAMA ,  Ayumi OHKUMA ,  Takeo YAMADA

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

    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 raising the work implement based on an operation command from the operation apparatus, decides switching from the intervention control to control of the work implement in accordance with an operation command from the operation apparatus, when the operation command from the operation apparatus is the operation command for raising the work implement or the neutral command based on a result of the determination, and makes an adjustment to gradually change the rising target speed of the work implement to the target speed in accordance with the operation command from the operation apparatus when the speed difference is greater than or equal to a predetermined value.

    WORK MACHINE AND CONTROL METHOD FOR WORK MACHINE
    3.
    发明申请
    WORK MACHINE AND CONTROL METHOD FOR WORK MACHINE 审中-公开

    公开(公告)号：US20190032302A1

    公开(公告)日：2019-01-31

    申请号：US15756240

    申请日：2017-07-14

    Applicant: KOMATSU LTD.

    Inventor： Toru MATSUYAMA ,  Ayumi OHKUMA ,  Takeo YAMADA

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

    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.

    WORK VEHICLE
    4.
    发明申请
    WORK VEHICLE 有权
    工作车辆

    公开(公告)号：US20160265186A1

    公开(公告)日：2016-09-15

    申请号：US14408370

    申请日：2014-09-10

    Applicant: KOMATSU LTD.

    Inventor： Yoshiki KAMI ,  Takeo YAMADA

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

    CPC classification number: E02F3/437 ,  E02F3/32 ,  E02F3/435 ,  E02F9/2004 ,  E02F9/2033 ,  E02F9/2203 ,  E02F9/2207 ,  E02F9/2228 ,  E02F9/2285 ,  E02F9/262 ,  G05B2219/2616

    Abstract: A work vehicle includes an arm. An arm cylinder drives the arm. A direction control valve operates the arm cylinder by allowing supply of a hydraulic oil to the arm cylinder as a spool moves. An oil path is connected to the direction control valve. A pilot oil for moving the spool flows through the oil path. A proportional solenoid valve for arm excavation is provided in the oil path. An arm control member is provided for an operator to operate drive of the arm. An amount of operation of the arm control member is equal to or smaller than a prescribed value in a first operation state and greater than the prescribed value in a second operation state. A command current instructing an opening of the proportional solenoid valve for arm excavation is set to a constant value in the first operation state.

    Abstract translation: 工作车辆包括一个臂。 手臂缸驱动臂。 方向控制阀通过允许当阀芯移动时向液压缸供应液压油来操作臂缸。 油路连接到方向控制阀。 用于使阀芯移动的先导油流过油路。 在油路中提供了用于臂挖掘的比例电磁阀。 为操作者提供臂控制构件以操作臂的驱动。 在第一操作状态下，臂控制构件的操作量等于或小于规定值，并且在第二操作状态下大于规定值。 在第一操作状态下，指示用于臂开挖的比例电磁阀的打开指令电流被设定为恒定值。

    WORK MACHINE AND CONTROL METHOD FOR WORK MACHINE
    5.
    发明申请
    WORK MACHINE AND CONTROL METHOD FOR WORK MACHINE 审中-公开

    公开(公告)号：US20190078290A1

    公开(公告)日：2019-03-14

    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 ,  E02F3/32 ,  E02F9/26

    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.

    EARTH-MOVING MACHINE
    6.
    发明申请
    EARTH-MOVING MACHINE 审中-公开

    公开(公告)号：US20190027820A1

    公开(公告)日：2019-01-24

    申请号：US15757677

    申请日：2017-06-26

    Applicant: KOMATSU LTD.

    Inventor： Takeo YAMADA ,  Hiroshi ABE ,  Ryosuke OKUI ,  Gousuke NAKASHIMA

    IPC: H01Q1/32 ,  E02F9/26 ,  E02F9/08

    Abstract: A hydraulic excavator includes: a vehicular body; a cab placed on the vehicular body; and a plurality of antennas for receiving satellite positioning signals, the plurality of antennas including a main antenna and a sub-antenna. The main antenna is attached to the cab. The sub-antenna is attached to the vehicular body without the cab being interposed.

    WORK VEHICLE
    7.
    发明申请
    WORK VEHICLE 有权
    工作车辆

    公开(公告)号：US20160145827A1

    公开(公告)日：2016-05-26

    申请号：US14419542

    申请日：2014-09-10

    Applicant: KOMATSU LTD.

    Inventor： Yoshiki KAMI ,  Takeo YAMADA ,  Yuto FUJII ,  Takeshi TAKAURA

    IPC: E02F3/43 ,  E02F3/30

    CPC classification number: E02F3/435 ,  E02F3/30 ,  E02F3/437 ,  E02F9/262 ,  E02F9/265 ,  G05B19/416 ,  G05B2219/40043 ,  G05B2219/43203 ,  G05B2219/45012

    Abstract: A work vehicle includes a boom, an arm, a bucket, an arm control member, a speed limit determination portion, and a target speed determination portion. The speed limit determination portion determines a speed limit for limiting a speed of a cutting edge of the bucket in accordance with a distance between a cutting edge and a design surface. The target speed determination portion determines a target speed of the boom based on the speed limit. The speed limit determination portion decides on a speed limit calculated based on correlation between the speed limit and the distance between the design surface and the cutting edge when an amount of operation of the arm control member is equal to or greater than a prescribed amount and decides on a speed limit lower than the speed limit calculated based on the correlation when the amount of operation is smaller than the prescribed amount.

    Abstract translation: 工作车辆包括吊杆，臂，铲斗，臂控制构件，限速确定部和目标速度确定部。 速度限制判定部根据切削刃和设计面之间的距离，决定限制铲斗的切削刃速度的速度限制。 目标速度确定部分基于速度限制来确定起重臂的目标速度。 速度限制判断部判定在臂控制部件的动作量为规定量以上的情况下，基于速度限制与设计面与切削刃之间的距离的关系而计算出的速度限制，并且决定 在比操作量小于规定量时基于相关性计算的速度限制的速度限制。

Patent Agency Ranking