EMERGENCY DEVICE FOR RAISING OR LOWERING LIFTS TRAPPED BETWEEN FLOORS

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.