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    HYDRAULIC CONTROL DEVICE AND CONSTRUCTION MACHINERY INCLUDING SAME
    4.
    发明申请
    HYDRAULIC CONTROL DEVICE AND CONSTRUCTION MACHINERY INCLUDING SAME 有权
    液压控制装置及其构造机械

    公开(公告)号：US20140318116A1

    公开(公告)日：2014-10-30

    申请号：US14364018

    申请日：2012-11-30

    申请人： KAWASAKI JUKOGYO KABUSHIKI KAISHA ,  KABUSHIKI KAISHA KCM

    发明人： Makoto Ito ,  Ryo Yamamoto ,  Kazuto Fujiyama ,  Hiroyasu Kodera ,  Shinichiro Tanaka

    IPC分类号： B62D5/07 ,  F15B11/16 ,  E02F9/22

    CPC分类号： B62D5/075 ,  B62D5/065 ,  B62D5/07 ,  E02F9/0841 ,  E02F9/225 ,  E02F9/2282 ,  E02F9/2285 ,  E02F9/2296 ,  F15B11/042 ,  F15B11/162 ,  F15B11/167 ,  F15B2211/351 ,  F15B2211/455

    摘要： A hydraulic control device includes: a hydraulic pump connected in parallel to steering and boom cylinders; a steering control valve that controls the direction of operating oil flowing through the steering cylinders; a boom control valve that connects the hydraulic pump to a tank when the valve is at a neutral position and controls the direction of the oil flowing through the boom cylinders when the valve is at an offset position; a meter-in pressure compensator that increases flow rate of the oil flowing through a variable restrictor of the steering control valve in accordance with pressure in front of and behind the restrictor; and a bleed-off pressure compensator that decreases flow rate of the oil flowing through the boom control valve in accordance with the increase in pressure of the oil flowing through the steering cylinders to maintain the predetermined pressure of the oil in the steering control circuit.

    摘要翻译： 液压控制装置包括：与转向臂和动臂缸并联连接的液压泵; 转向控制阀，其控制流过转向缸的操作油的方向; 一个悬臂控制阀，当阀处于中间位置时，将液压泵连接到油箱，并且当阀处于偏移位置时控制流过动臂油缸的油的方向; 一个内置的压力补偿器，其根据限制器前面和后面的压力增加流过转向控制阀的可变节流器的油流量; 以及泄放压力补偿器，其根据流过转向缸的油的压力的增加而降低流过动臂控制阀的油的流量，以保持转向控制回路中的油的预定压力。