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发明公开
CN104279203A 流体操作致动器 无效 - 撤回

流体操作致动器
摘要：
本发明提供了一种流体操作致动器（100）。流体操作致动器（100）包括形成活塞孔（201）的主体（101）。活塞（111）能在活塞孔（201）内运动。流体操作致动器（100）还包括阀单元（105），该阀单元（105）耦连到主体（101）并包括流体入口端口（217）、流体排出端口（220）和阀构件（214），阀构件（214）被配置成选择性地打开流体入口端口（217）与活塞孔（201）之间以及排出端口（220）与活塞孔（201）之间的流体流动路径。流体操作致动器（100）还能包括耦连到主体（101）和阀单元（105）的控制单元（106）。控制单元（106）能够包括与流体入口端口（217）流体连通的先导输入端口（317a）。控制单元（106）还能包括与阀构件（214）流体连通的第一和第二先导输出端口（317b,317c）。进一步地，控制单元（106）能包括导阀（230），该导阀（230）适于打开先导输入端口（317a）与第一和第二先导输出端口（317b，317c）中一个或多个先导输出端口之间的流体流动路径，从而致动阀构件（214）。
摘要（英）：

A fluid operated actuator (100) is provided. The fluid operated actuator (100) includes a body (101) forming a piston bore (201). A piston (111) is movable within the piston bore (201). The fluid operated actuator (100) also includes a valve unit (105) coupled to the body (101) and including a fluid inlet port (217), a fluid exhaust port (220), and a valve member (214) configured to selectively open a fluid flow path between the fluid inlet port (217) and the piston bore (201) and between the exhaust port (220) and the piston bore (201). The fluid operated actuator (100) can also include a control unit (106) coupled to the body (101) and the valve unit (105). The control unit (106) can include a pilot input port (317a) in fluid communication with the fluid inlet port (217). The control unit (106) can also include first and second pilot output ports (317b, 317c) in fluid communication with the valve member (214). Further, the control unit (106) can include a pilot valve (230) adapted to open a fluid flow path between the pilot input port (317a) and one or more of the first and second pilot output ports (317b, 317c) in order to actuate the valve member (214).

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