| 摘要 |
FIELD: electric drives for shut-off fittings; control of actuating members of pipe lines. SUBSTANCE: proposed electric drive includes electric motor, worm reduction gear, planetary mechanism, overrunning clutch and friction clutch. Worm is movable in axial direction and is locked in initial position by means of flexible member. One end of rod controlling the friction clutch is connected with worm and other end is provided with bore where rolling solids of revolution are arranged. Rolling solids of revolution act on washers opening the friction clutch. EFFECT: enhanced operational reliability. 4 cl, 1 dwg |
