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发明授权
CN105392999B 负载传感控制回路 有权

负载传感控制回路
摘要：
一种负载传感控制回路，将连接有补偿阀(C1、C2)的致动器(A1、A2)的负载压力导入到补偿阀(C1、C2)的第1压力室(9、10)，将由选择部(4)选择出的最高负载压力导入到补偿阀(C1、C2)的第2压力室(11、12)，利用两压力室(9、10、11、12)之间的压力作用来控制补偿阀(C1、C2)的开度，根据切换阀(V1、V2)的切换量来对泵排出量进行分流。而且，设有排泄通路(13)，该排泄通路(13)将补偿阀(C2)的第1压力室10连接于工作流体箱(T)，并且，设有用于控制第1压力室(10)的压力的分流比改变阀(CV)。
摘要（英）：

A pump discharge amount is divided in accordance with switch amounts of respective switch valves (V1, V2) by leading load pressures of actuators (A1, A2) to which compensator valves (C1, C2) are connected to respective first pressure chambers (9, 10) of the compensator valves (C1, C2), leading a maximum load pressure selected by a selection unit (4) to respective second pressure chambers (11, 12) of the compensator valves (C1, C2), and controlling respective openings of the compensator valves (C1, C2) in accordance with respective pressure actions between the respective pressure chambers (9, 10, 11, 12). A drain passage (13) is provided to connect the first pressure chamber (10) of the compensator valve (C2) to a tank (T), and a flow dividing ratio modification valve (CV) is provided to control a pressure in the first pressure chamber (10).

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