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    Work vehicle
    11.
    发明授权
    Work vehicle 有权
    工作车辆

    公开(公告)号：US09458598B2

    公开(公告)日：2016-10-04

    申请号：US14372472

    申请日：2014-04-24

    Applicant: KOMATSU LTD.

    Inventor： Takeshi Takaura ,  Yoshiki Kami ,  Jin Kitajima

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

    CPC classification number: E02F3/439 ,  E02F3/32 ,  E02F3/437 ,  E02F9/2033 ,  E02F9/262 ,  E02F9/265

    Abstract: There is provided a work vehicle in which sudden operation of a work implement can be suppressed. The work vehicle includes a design surface information acquiring unit for acquiring data of a design surface indicative of a target shape of a work object by the work implement; a cutting edge position computing unit for computing a position of a cutting edge of a bucket; and an operation restricting unit for executing operation restriction control by which a boom is forcibly raised in accordance with a relative position of the cutting edge to the design surface, and the position of the cutting edge is restricted to an upper part of the design surface. In a state where the cutting edge is located away from the design surface in a downward perpendicular direction by a prescribed distance or longer, the operation restricting unit does not execute the operation restriction control.

    Abstract translation: 提供了能够抑制作业装置的突然动作的作业车辆。 工作车辆包括：设计面信息获取单元，用于通过工作工具获取指示工作对象的目标形状的设计表面的数据; 用于计算铲斗的切削刃的位置的切削刃位置计算单元; 以及操作限制单元，用于根据切割边缘相对于设计表面的相对位置执行动臂被强制升高的操作限制控制，并且切割边缘的位置限制在设计表面的上部。 在切削刃沿向下垂直方向远离设计表面一定距离或更长的状态下，操作限制单元不执行操作限制控制。

    Hydraulic excavator
    12.
    发明授权
    Hydraulic excavator 有权
    液压挖掘机

    公开(公告)号：US09080312B2

    公开(公告)日：2015-07-14

    申请号：US14355410

    申请日：2013-12-06

    Applicant: KOMATSU LTD.

    Inventor： Takeshi Takaura

    IPC: E02F9/22 ,  F16H61/421 ,  E02F9/20

    CPC classification number: E02F9/2285 ,  E02F9/2004 ,  E02F9/2012 ,  E02F9/2282 ,  E02F9/2292 ,  F15B13/0422 ,  F15B21/008 ,  F15B2211/6316 ,  F15B2211/6346 ,  F15B2211/6355 ,  F15B2211/67 ,  F15B2211/8616 ,  F16H61/421

    Abstract: There is provided a hydraulic excavator in which occurrence of minute vibrations in a control lever can be suppressed. The hydraulic excavator includes: a first pilot pressure control valve outputting a pilot pressure in accordance with operation of the control lever; an upstream pilot conduit having one end connected to the first pilot pressure control valve; a proportional solenoid valve connected to the other end of the upstream pilot conduit; a downstream pilot conduit having one end connected to the proportional solenoid valve; and a pilot switching valve for a boom having a second pilot port connected to the other end of the downstream pilot conduit, and controlling operation of the boom. A volume of the upstream pilot conduit is larger than a volume of the downstream pilot conduit.

    Abstract translation: 提供了一种液压挖掘机，其中可以抑制控制杆中的微小振动的发生。 液压挖掘机包括：根据控制杆的操作输出先导压力的第一先导压力控制阀; 上游先导管，其一端连接到第一先导压力控制阀; 连接到上游先导管道的另一端的比例电磁阀; 一个下游先导管，其一端连接到比例电磁阀; 以及用于具有连接到下游先导管道的另一端的第二先导端口并且控制起重臂的操作的起重臂的先导换向阀。 上游先导管的体积大于下游先导管的体积。

    Display system and construction machine
    13.
    发明授权
    Display system and construction machine 有权

    公开(公告)号：US10794047B2

    公开(公告)日：2020-10-06

    申请号：US15208796

    申请日：2016-07-13

    Applicant: Komatsu Ltd.

    Inventor： Daiki Arimatsu ,  Yuki Shimano ,  Takeshi Takaura ,  Jason Anetsberger

    IPC: E02F9/26 ,  G09G5/00 ,  G09G5/377 ,  G06F3/01 ,  G01S19/14 ,  E02F3/84 ,  E02F3/32

    Abstract: Provided is a display system including: a display unit which displays an image; a vehicle body position data acquisition unit which acquires vehicle body position data indicating a position of a vehicle body supporting a work machine; a process position data storage unit which stores process position data indicating a process position of a process target processed by the work machine; and a display controller which displays an image indicating the process position based on the process position data and an image indicating a specific position of the vehicle body on the display unit.

    WORK MACHINE CONTROL SYSTEM, WORK MACHINE, AND WORK MACHINE CONTROL METHOD
    16.
    发明申请
    WORK MACHINE CONTROL SYSTEM, WORK MACHINE, AND WORK MACHINE CONTROL METHOD 有权
    工作机械控制系统，工作机械和工作机器控制方法

    公开(公告)号：US20160244950A1

    公开(公告)日：2016-08-25

    申请号：US14386094

    申请日：2014-05-30

    Applicant: KOMATSU LTD.

    Inventor： Yoshiki Kami ,  Takeshi Takaura

    IPC: E02F9/26 ,  E02F3/43

    CPC classification number: E02F9/265 ,  E02F3/32 ,  E02F3/435 ,  E02F3/439 ,  E02F9/2033 ,  E02F9/2203 ,  E02F9/2292 ,  E02F9/2296 ,  E02F9/262 ,  G01C15/00 ,  G01C21/165

    Abstract: A work machine control method of controlling a work machine including a work unit with a working tool, the work machine control method includes: detecting a position of the work unit; obtaining the position of the work unit based on the detected position information item and generating a first target excavation ground shape information item as an information item of an intersection portion of at least one target construction face indicating a target shape with respect to a first cut face which intersects a work unit operation plane as an operation plane for the work unit and is parallel to a vertical direction; and controlling a velocity in a direction in which the work unit approaches an excavation target so that the velocity becomes equal to or less than a limitation velocity based on the first target excavation ground shape information item.

    Abstract translation: 一种工作机械控制方法，其包括具有作业工具的作业单元的作业机械的控制，所述作业机械控制方法包括：检测所述作业单元的位置; 基于检测到的位置信息项获得作业单元的位置，并产生第一目标挖掘地面形状信息项作为指示目标形状相对于第一切割面的至少一个目标构造面的交点部分的信息项 其与工作单元操作平面相交作为工作单元的操作平面并且平行于垂直方向; 并且控制工作单元接近挖掘对象的方向的速度，使得该速度基于第一目标挖掘地面形状信息项等于或小于限制速度。

    WORK VEHICLE
    17.
    发明申请
    WORK VEHICLE 有权
    工作车辆

    公开(公告)号：US20150308082A1

    公开(公告)日：2015-10-29

    申请号：US14372475

    申请日：2014-04-24

    Applicant: KOMATSU LTD.

    Inventor： Takeshi Takaura ,  Yoshiki Kami ,  Jin Kitajima

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

    CPC classification number: E02F9/262 ,  E02F3/32 ,  E02F3/43 ,  E02F3/435 ,  E02F3/439 ,  E02F9/20 ,  E02F9/2029 ,  E02F9/2033 ,  E02F9/265

    Abstract: There is provided a work vehicle in which a work implement can be freely operated. The work vehicle includes: a design surface information acquiring unit for acquiring data of a design surface indicative of a target shape of a work object by the work implement; a cutting edge position computing unit for computing a position of a cutting edge of a bucket; and an operation restricting unit for executing operation restriction control by which, when the cutting edge of the bucket comes closer to the design surface, operation of the work implement is stopped before the cutting edge of the bucket reaches the design surface. In a case where the cutting edge is located away from the design surface in a downward perpendicular direction by a prescribed distance or longer, the operation restricting unit does not execute the operation restriction control.

    Abstract translation: 提供了可以自由操作工作装置的作业车辆。 工作车辆包括：设计表面信息获取单元，用于通过工作工具获取指示工作对象的目标形状的设计表面的数据; 用于计算铲斗的切削刃的位置的切削刃位置计算单元; 以及操作限制单元，用于执行操作限制控制，当铲斗的切割边缘靠近设计表面时，在铲斗的切割边缘到达设计表面之前停止作业工具的操作。 在切削刃沿向下垂直方向远离设计表面一定距离或更长的情况下，操作限制单元不执行操作限制控制。

    HYDRAULIC EXCAVATOR
    18.
    发明申请
    HYDRAULIC EXCAVATOR 有权
    液压挖掘机

    公开(公告)号：US20150233086A1

    公开(公告)日：2015-08-20

    申请号：US14355394

    申请日：2013-12-06

    Applicant: KOMATSU LTD.

    Inventor： Takeshi Takaura

    IPC: E02F3/43 ,  E02F3/42 ,  E02F9/22 ,  E02F3/32

    CPC classification number: E02F3/435 ,  E02F3/32 ,  E02F3/425 ,  E02F9/22 ,  E02F9/2228 ,  E02F9/2285 ,  E02F9/2292 ,  F15B2211/329 ,  F15B2211/355 ,  F15B2211/36 ,  F15B2211/6316 ,  F15B2211/6346 ,  F15B2211/6355 ,  F15B2211/665 ,  F15B2211/67 ,  F15B2211/8613 ,  Y10T137/87064

    Abstract: There is provided a hydraulic excavator in which occurrence of minute vibrations in a control lever can be suppressed. A boom-raising proportional solenoid valve is provided in a boom-raising pilot conduit. A boom-lowering proportional solenoid valve is provided in a boom-lowering pilot conduit. A controller controls an opening degree of the boom-lowering proportional solenoid valve based on a pressure generated in the boom-lowering pilot conduit between the control lever and the boom-lowering proportional solenoid valve, and controls an opening degree of the boom-raising proportional solenoid valve. An amount of increase in current per unit time when the controller outputs, to the boom-lowering proportional solenoid valve, an instruction signal for instructing an increase in opening degree is smaller than an amount of increase in current per unit time when the controller outputs, to the boom-raising proportional solenoid valve, an instruction signal for instructing an increase in opening degree.

    Abstract translation: 提供了一种液压挖掘机，其中可以抑制控制杆中的微小振动的发生。 在起重臂提升先导管道中设置起重臂起升比例电磁阀。 在起重臂下降的先导管道中设置有降档比例电磁阀。 控制器基于在控制杆和起重臂下降比例电磁阀之间的动臂降低先导管路中产生的压力来控制动臂下降比例电磁阀的开度，并且控制动臂提升比例电磁阀的开度 电磁阀。 当控制器输出到控制器输出时，单位时间内的电流的增加量增加到起动器下降比例电磁阀，用于指示开度增加的指令信号小于单位时间内的电流增加量， 到起重臂提升比例电磁阀，用于指示开度增加的指令信号。

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