Fluid passage control device for fluid pressure actuator
    21.
    发明授权
    Fluid passage control device for fluid pressure actuator 失效
    用于流体压力致动器的流体通道控制装置

    公开(公告)号:US5444979A

    公开(公告)日:1995-08-29

    申请号:US274552

    申请日:1994-07-13

    IPC分类号: F02B61/04 F15B7/00

    摘要: A tilt cylinder for tilting an outboard engine has first and second cylinder chambers. A pair of on/off valves is movably disposed in respective fluid passages connected to a hydraulic pump and the first and second cylinder chambers, respectively. The on/off valves are operatively combined with respective shuttle valves which have respective oil passages in facing relationship to the on/off valves, respectively, and respective ball valve bodies for selectively opening the oil passage into communication with each other. When the hydraulic pump is actuated to develop a working oil pressure buildup, one of the on/off valves is opened by the working oil pressure buildup to establish an oil supply passage from the hydraulic pump to one of the first and second chambers, and the other of the on/off valves is opened by the coacting shuttle valve which is moved by the working oil pressure buildup to establish an oil return passage from the other of the first and second chambers to the hydraulic pump. The shuttle valves have respective auxiliary passages communicating with the oil passages, respectively, and the oil supply and return passages, respectively.

    摘要翻译: 用于倾斜舷外发动机的倾斜气缸具有第一和第二气缸室。 一对开/关阀可移动地设置在分别连接到液压泵和第一和第二气缸室的相应流体通道中。 开关阀分别与分别与开/关阀相对应的油通路的相应梭阀可操作地组合,以及用于选择性地打开油通道彼此连通的各个球阀体。 当液压泵被致动以产生工作油压累积时,通过工作油压累积打开一个开/关阀,以建立从液压泵到第一和第二室中的一个的供油通道,并且 另一个开/关阀由通过工作油压力积聚而移动的协作梭阀打开,以建立从第一和第二室中的另一个到液压泵的回油通道。 梭阀分别具有与油路连通的各自的辅助通道和供油和返回通道。

    Spool valve with self-centering mechanism
    22.
    发明授权
    Spool valve with self-centering mechanism 失效
    带自动定心机构的阀芯阀

    公开(公告)号:US5327936A

    公开(公告)日:1994-07-12

    申请号:US998837

    申请日:1992-12-30

    申请人: Hisao Takayanagi

    发明人: Hisao Takayanagi

    摘要: A spool valve includes a spool assembly axially movably disposed in a cylindrical valve case. The spool assembly comprises a guide sleeve threaded in an end portion of the valve case and having an inner end positioned in the valve case and an outer end positioned outside of the valve case, and a spool axially slidably extending through an opposite end portion of the valve case and the guide sleeve. The spool is centered with respect to the valve case by a self-centering mechanism which is retained in the guide sleeve and the spool by a stopper nut threaded in the inner end of the guide sleeve. A lock nut is threaded over the outer end of the guide sleeve for fastening the guide sleeve to the valve case.

    摘要翻译: 滑阀包括轴向移动地设置在圆柱形阀壳体中的阀芯组件。 卷轴组件包括螺纹连接在阀壳的端部中并具有定位在阀壳体中的内端和位于阀壳体外部的外端的引导套筒,以及轴向可滑动地延伸穿过阀壳体的相对端部的阀芯 阀壳和导套。 阀芯通过自动对中机构相对于阀壳体居中,该定心机构通过螺纹连接在导向套筒的内端中的止动螺母而保持在导向套筒和阀芯中。 锁紧螺母穿过导向套筒的外端,用于将导向套筒紧固到阀门壳体上。