| 摘要 |
FIELD: electricity. ^ SUBSTANCE: device may be used for control of stop valves in main oil pipelines. Electric drive contains manual doubler and provides self-breaking to outlet link. This is achieved by the fact that electric drive contains double-stage reduction gear, in which as first stage worm gear is used with casing that has the possibility of unfixing and serves as rotating element of manual doubler. ^ EFFECT: simplification of electric drive design. ^ 3 dwg |
