摘要 |
The invention relates to an emergency device for the raising or lowering of elevators trapped between floors comprising a first geared motor ( 1 ) transmitting a rotational movement to the output shaft of the traction machine ( 3 ) of the car of the elevator in the emergency situation with the elevator trapped between floors. This first geared motor ( 1 ) is connected by means of a cable ( 33 ) to a second direct current geared motor ( 8 ) located in a control cabinet ( 44 ) which upon rotating, acts like a generator feeding electric current to the first geared motor ( 1 ), a manual actuation crank ( 43 ) determining the mentioned rotational movement being coupled to the second geared motor ( 8 ). In order to prevent the reversal of energy flow, it has a two-way clutch ( 4 ) or micro-circuit breakers ( 35, 36 ) braking the first geared motor ( 1 ) when the actuation crank ( 43 ) starts rotating due to this reversal of flow.
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