Lift cage safety device - has brake operating automatically if chain slackens
Реферат: The mechanism is particularly for vehicle lifts, and incorporates a brake automatically halting the lift cage when the control is moved to the stop position, or one of the cage drive chains slackens off. A feeler detecting a slack chain can be equipped with limit switches preventing lowering of the load on the cage jamming and the chains slackening off. Where the cage travels on a number of guide rails, the chain for each rail can have a cam-operated switch, the switches being connected in parallel. The cut off the current to the cage if the chain speeds differ.
Safety device to define insufficient electric braking and to switch over to emergency brake
Номер патента: RU2470813C2. Автор: Тьерри ЖОБАР. Владелец: Альстом Транспорт Са. Дата публикации: 2012-12-27.