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    CONSTRUCTION MACHINE
    2.
    发明申请
    CONSTRUCTION MACHINE 审中-公开
    建筑机械

    公开(公告)号：US20160036358A1

    公开(公告)日：2016-02-04

    申请号：US14879243

    申请日：2015-10-09

    Applicant: HITACHI CONSTRUCTION MACHINERY CO., LTD.

    Inventor： Takashi Ogawa ,  Kohei Sakurai ,  Yuichiro Morita

    IPC: H02P6/06 ,  H02P6/12 ,  H02P3/18

    CPC classification number: H02P3/04 ,  B60L2200/40 ,  E02F9/128 ,  E02F9/2095 ,  E02F9/267 ,  G01P3/44 ,  H02P3/18 ,  H02P6/06 ,  H02P6/12 ,  H02P29/0241 ,  Y02T10/642

    Abstract: A construction machine includes: a swing structure; an electric motor that drives the swing structure; an operating device that outputs an operating signal according to an operating amount and an operating direction; an inverter device that controls the electric motor based on a control signal generated based on the operating signal; a position sensor that detects an actual speed of the electric motor; and a second controller that determines whether at least one of a first condition and a second condition is satisfied. The first condition is satisfied when a sign of a value computed by subtracting the actual speed from a target speed of the electric motor that defined by the control signal; and the second condition is satisfied when a difference between the target speed and the actual speed is greater than a first reference value, and when the acceleration is greater than a second reference value.

    Abstract translation: 一种施工机械包括：摆动结构; 驱动摆动结构的电动机; 操作装置，其根据操作量和操作方向输出操作信号; 逆变器装置，其基于基于所述操作信号生成的控制信号来控制所述电动机; 检测电动机的实际速度的位置传感器; 以及第二控制器，其确定是否满足第一条件和第二条件中的至少一个。 当通过由控制信号定义的电动机的目标速度减去实际速度而计算的值的符号时，满足第一条件; 并且当目标速度和实际速度之间的差大于第一参考值时，以及当加速度大于第二参考值时，满足第二条件。

    Work machine
    3.
    发明授权
    Work machine 有权

    公开(公告)号：US10280591B2

    公开(公告)日：2019-05-07

    申请号：US15516497

    申请日：2015-10-02

    Applicant: Hitachi Construction Machinery Co., Ltd.

    Inventor： Yoshiyuki Takigawa ,  Yasunori Ota ,  Shiho Izumi ,  Yuichiro Morita ,  Kouichi Shibata

    IPC: E02F9/20 ,  F02D29/02 ,  F02D29/04 ,  F02D29/06 ,  F02D29/00 ,  E02F9/22

    Abstract: A work machine that can prevent restarting of an engine against a will of an operator from an idle stop state is provided. A hydraulic excavator includes a display device that displays a confirmation screen image for allowing an operator to confirm whether or not an engine is to be restarted from an idle stop state, and an inputting device that allows the operator to input a restart instruction for the engine in an interlocked relationship with the display of the confirmation screen image. A machine controller includes a restart controlling section that restarts the engine based on the restart instruction for the engine inputted by the inputting device.

    Construction machine
    8.
    发明授权
    Construction machine 有权

    公开(公告)号：US10975551B2

    公开(公告)日：2021-04-13

    申请号：US16080682

    申请日：2017-02-28

    Applicant: HITACHI CONSTRUCTION MACHINERY CO., LTD.

    Inventor： Katsumasa Uji ,  Yuichiro Morita ,  Kouichi Shibata

    IPC: E02F9/26 ,  E02F3/43 ,  G07C5/02

    Abstract: There is provided an information controller (60) that calculates a work amount based on the positions of a construction target surface and a current surface in a set coordinate system set in the operational plane of a multi-joint type front work device (30), and a construction distance (L) by which a construction target surface and a current surface of configurations equivalent to those of the construction target surface and the current surface continue on a construction object, and that calculates a predicted requisite time of the work amount of a work based on the work amount and processing speed. A construction completion prediction time calculated by the information controller (60) or a prediction time calculated from the construction completion prediction time is displayed by a display device (67).

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