公开(公告)号：US20140137731A1

公开(公告)日：2014-05-22

申请号：US14171462

申请日：2014-02-03

Applicant: ABB Technology AG

Inventor： Thomas BRENNEIS ,  Matthias SCHMIDT ,  Henrik LOHRBERG ,  Frank FIEDLER ,  Bruno GEHLERT ,  Roland PALM

IPC: F15B15/22

CPC classification number: F15B15/22 ,  H01H3/605 ,  H01H33/34

Abstract: A differential cylinder for a hydromechanical drive for actuating an electrical switch, for example a high-voltage switch, is disclosed which includes a first pressure region for applying a working pressure, a second pressure region, and a piston which is capable of moving in a movement region and which is movable depending on a pressure difference between the first and second pressure region. A damping device is provided which, in the event of a movement of the piston in the direction of the second pressure region, provides damping with respect to the movement of the piston in a section of the movement region, wherein the damping is adjustable.

Abstract translation: 公开了用于致动电开关（例如高压开关）的液压机械驱动器的差动缸，其包括用于施加工作压力的第一压力区域，第二压力区域和能够在 运动区域，其可以根据第一和第二压力区域之间的压力差移动。 提供了一种阻尼装置，其在活塞沿第二压力区域的方向移动的情况下相对于活塞在运动区域的一部分中的运动提供阻尼，其中阻尼是可调节的。