Hydraulic control circuit for operating a split actuator mechanical mechanism
    1.
    发明授权
    Hydraulic control circuit for operating a split actuator mechanical mechanism 失效
    用于操作分动执行器机械机构的液压控制回路

    公开(公告)号:US06715402B2

    公开(公告)日:2004-04-06

    申请号:US10082862

    申请日:2002-02-26

    IPC分类号: F01B1116

    摘要: A system for simultaneously operating first and second hydraulic cylinders has an inlet node for connection to a source of pressurized fluid and an outlet node for connection to a tank. A two-position, three-way primary control valve has a first port connected to the inlet node, a second port connected to the outlet node, and a common port. A first electrohydraulic proportional valve connects the common port to a first port of the first cylinder, and a second electrohydraulic proportional valve connects the common port to a first port of the second cylinder. A third electrohydraulic proportional valve connects the inlet node to a second port of the first cylinder and a second port of the second cylinder. Selectively operating the primary control valve and one of the third and fourth electrohydraulic proportional valves determines the direction in which the first and second cylinders move. Operation of the first and second electrohydraulic proportional valves meters hydraulic fluid to or from the first and second cylinders to control the rate of that movement.

    摘要翻译: 用于同时操作第一和第二液压缸的系统具有用于连接到加压流体源的入口节点和用于连接到罐的出口节点。 两位三通一级控制阀具有连接到入口节点的第一端口,连接到出口节点的第二端口和公共端口。 第一电动比例阀将公共端口连接到第一气缸的第一端口,并且第二电动比例阀将公共端口连接到第二气缸的第一端口。 第三电液比例阀将入口节点连接到第一气缸的第二端口和第二气缸的第二端口。 选择性地操作主控制阀,并且第三和第四电液比例阀中的一个确定第一和第二气缸移动的方向。 第一和第二电液比例阀的操作将液压流体计量到第一和第二气缸或从第一和第二气缸来控制该运动的速率。