ELECTRIC DRIVE OF LOCK FITTING Russian patent published in 2001 - IPC

FIELD: pipeline lock fittings, namely devices for changing positions of actuating members of pipeline lock fitting (dampers, shutters, cocks). SUBSTANCE: electric drive of lock fitting includes electric motor 1, reduction gear 2, main planetary gearing with carrier 4, closing planetary gearing, manual-control worm gearing, overrunning clutch, friction clutch with control mechanism. Axle 9 of intermediate gear wheel 7 of closing planetary gearing is mounted stationary. Epicyclic wheel 8 of closing planetary gearing is joined with holder 10 of overrunning clutch through mechanism for controlling friction clutch. Sprocket 13 of overrunning clutch is mounted in output shaft of main planetary gearing. EFFECT: enhanced operational reliability of electric drive at any loads. 1 dwg