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1. 发明授权

US5328148A Control device for hydraulic piston/cylinder unit 失效
标题翻译：液压活塞/气缸单元控制装置
公开(公告)号：US5328148A
公开(公告)日：1994-07-12
申请号：US971751
申请日：1993-01-26
申请人： Sandau Hartmut
发明人： Sandau Hartmut
IPC分类号： F15B13/01 , F15B13/043 , F15B13/044 , F16K31/363
CPC分类号： F15B13/043 , F15B13/015 , F15B13/0442
摘要： A control device for a hydraulic work cylinder has a housing having an inlet, an outlet, and a valve seat, a shut-off valve having a valve body cooperating with the valve seat of the housing and having a further valve seat, a pilot valve member arranged in the valve body and cooperating with the further valve seat of the valve body under the action of a spring force. The housing and the valve body form therebetween a pressure chamber so that the valve body under the action of a pressure in the pressure chamber is pressed against the valve seat of the housing. The pilot valve member has a valve member part and a plurality of pilot portions arranged in series. Two throttles are arranged in series so that the pressure chamber communicates with the supply of the housing through the throttles and the pilot valve member is located between the throttles. The pressure chamber is connected with the outlet of the housing through the pilot valve member and a passage which opens by the pilot valve member.
摘要翻译： PCT No.PCT / DE91 / 00748 Sec。 371日期：1993年1月26日 102（e）日期1993年1月26日PCT 1991年9月21日PCT PCT。出版物WO92 / 07194 一种用于液压工作缸的控制装置具有壳体，该壳体具有入口，出口和阀座，截止阀具有与壳体的阀座配合的阀体，另外的阀座，布置在阀体中的先导阀构件，并在弹簧力的作用下与阀体的另一阀座配合。壳体和阀体之间形成有压力室，使得阀体在压力室内的压力作用下被压靠在壳体的阀座上。先导阀构件具有串联设置的阀构件部和多个先导部。两个节流器串联布置，使得压力室通过节流阀与壳体的供应部连通，并且先导阀构件位于节流阀之间。压力室通过先导阀构件与壳体的出口连接，以及通过先导阀构件打开的通道。

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