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发明授权
CN104948527B 泵装置和液压致动器 失效 - 权利终止

泵装置和液压致动器
摘要：
本发明涉及一种泵装置和液压致动器。提供第一壳体和第二壳体，第一壳体容纳换向阀的第一止回阀，该换向阀将液压流体的流切换到缸筒装置的第一室和第二室中的一个，缸筒装置的内部被活塞分隔为第一室和第二室，并且第二壳体叠置在第一壳体上，并且换向阀的致动阀容纳在其中以在叠置第一壳体的方向上移位。第二壳体的容纳第一致动阀的阀室具有受压表面，在该受压表面上，作用在第一阀室上的液压流体的压力向所述第一壳体作用。
摘要（英）：

A first case accommodating a first check valve of a switching valve switching a flow of hydraulic fluid to one of a first chamber and a second chamber of a cylinder device, an inside of which is segmented into the first chamber and the second chamber by a piston, and a second case which is stacked on the first case and in which a first actuation valve of the switching valve is accommodated to be displaced in a direction of stacking the first case are provided. A first valve chamber, accommodating the first actuation valve, of the second case has a pressure receiving surface on which pressure of hydraulic fluid that acts on the first valve chamber acts toward the first case.

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