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1. 发明申请

WO1983003455A1 FLUID CONTROL DEVICES 审中-公开
标题翻译：流体控制装置
公开(公告)号：WO1983003455A1
公开(公告)日：1983-10-13
申请号：PCT/AU1983000036
申请日：1983-03-24
申请人： SCALZO, Joseph , JOHNSON, Garrick, Ross , STECKI, Jacek, Stanislav
发明人： SCALZO, Joseph
IPC分类号： F16K11/07
CPC分类号： F16K27/041 , F15B13/0402 , F16K11/0716
摘要： A fluid control device of the sliding spool type having pilot control wherein a control profile (20) is located in a longitudinal bore through the spool (4) and has radial clearance (22) in said bore. The control profile (20) separates respective control chambers (12, 14) which extend to the main bore in which the spool is located and an orifice arrangement (5) in the wall of said spool (20) directs secondary fluid flow from a pressure port (10) onto said control profile and into said chambers (12, 14) whereby an imbalance in the chamber pressures will cause sliding movement of the spool. Further respective orifices (6, 8) allow said secondary flow to return to the low pressure side of a fluid supply. The control profile (20) is arranged on a rod which extends externally of the body of the device and sliding movement of the rod causes imbalance of a hydraulic Wheatstone bridge formed by the orifices (5, 6, 8) in combination with the control profile (20) whereby the bridge tends towards equilibrium causing the spool (4) to follow movement of said control profile (20) in a force feedback gain manner. The device has a position feedback ratio of 1:1.
摘要翻译：一种具有先导控制的滑动卷轴型流体控制装置，其中控制轮廓（20）位于通过卷轴（4）的纵向孔中，并且在所述孔中具有径向间隙（22）。控制轮廓（20）分离延伸到卷轴所在的主孔的相应的控制室（12,14），并且在所述卷轴（20）的壁中的孔布局（5）将压力端口（10）到所述控制轮廓上并进入所述腔室（12,14），由此腔室压力的不平衡将引起滑阀的滑动运动。进一步的各个孔（6,8）允许所述二次流返回流体供应的低压侧。控制轮廓（20）布置在杆上，该杆从装置主体的外部延伸并且杆的滑动运动导致由孔（5,6,8）形成的液压惠斯登电桥的不平衡与控制轮廓（20），由此桥接器趋向于平衡，导致线轴（4）以力反馈增益方式跟随所述控制轮廓（20）的运动。该装置的位置反馈比为1：1。

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