| 摘要 |
<p>The winch is designed to open and shut the ventilation valvesin fire-extinguishing systems. It increases the reliability ofmeshing-unmeshing of the wormscrew-worm wheel system. Theunmeshing device of the winch is designed as a two-worm lever (19)manually or pneumatically driven where its axis of revolving isincluded in space limited by two parallel planes - bothperpendicular to the plane of assembly of the winch. One of theparallel planes includes the axis of revolution of the wormscrewwheel (7), and the other plane includes the axis of revolution ofa cantelever bearing yoke (9). The axis of rotation of the two-armlever (19) favourably matches the axis of rotation of yoke (9).The unmeshing device does not optionally include a one-arm lever(24) for electromagnetic actuation, fitted in the plane parallelto the main surface of the two-arm lever (19) the axis ofrevolution of which coincides with the axis of revolution of thewormwheel (7). The winch has members for manual, pneumatic andelectromagnetic unmeshing.(11) 208</p> |
