| 摘要 |
<p>In one embodiment, a hydraulic blocking rotary actuator including a stator housing having a through bore to position a rotor assembly. A rotor assembly includes an output shaft and at least a first rotary piston assembly disposed radially about the output shaft. The rotary piston assembly includes an first vane element and an second vane element each with peripheral longitudinal faces substantially concentric to the other. A continuous seal groove is disposed in peripheral longitudinal faces and lateral end faces of the vane elements. A continuous seal is disposed in the continuous seal groove. The bore through the stator housing includes an interior cavity with surfaces adapted to receive the rotor assembly. With rotation fluid ports blocked the housing cavity is sealed with the continuous piston seal for hydraulic blocking, preventing actuator displacement by external forces. Other embodiments are disclosed.</p> |
