Braking device for preventing abnormal movement of elevator lift car with doors being in opening condition

Abstract

The invention provides a braking device for preventing an abnormal movement of an elevator lift car with doors being in an opening condition. The braking device for preventing the abnormal movement of the elevator lift car with the doors being in the opening condition comprises a pushing rod which is fixedly connected onto lift car doors; a rocking rod with a steering rod is hinged onto a rocking rod rack and pushed to swing by the pushing rod as the lift cars open and close, wherein the rocking rod rack is fixedly connected onto the lift car; connecting rods are hinged to the rocking rod and guiding rods are hinged to the connecting rods; the guiding rods are driven by the connecting rods, which are driven by the rocking rod, to move in guiding rails, which are fixedly connected onto the lift car by supporting frames, to complete a telescopic motion; braking is applied and released to the elevator lift car by inserting the guiding rods into clamping grooves which are fixed on a wall of a well and drawing the guiding rods out from the clamping grooves. The guiding rods are inserted into the clamping grooves on the wall of the well when the lift car doors open for a very small distance and drawn out from the clamping grooves when the lift car doors close with a very small gap left, so that the space that a passenger enters or exits the lift car doors can be protected for preventing the passenger from a shearing injury. An elevator safety circuit control mechanism is added, therefore when the lift car moves abnormally with the door being in the open condition, the elevator safety circuit can be broken to make the abnormal movement of the elevator lose a driving force, so that the abnormal movement of the lift car can be prevented more reliably.

Description

technical field [0001] The invention relates to the technical field of elevator control, in particular to a brake device for preventing abnormal movement of an elevator car in a door-open state. Background technique [0002] At present, elevators are widely used, but there is still a problem that the elevator car runs abnormally when the door is open, and there have been tragic incidents of casualties caused by accidents where elevators cut passengers repeatedly at home and abroad. The accidental movement that may be caused by the failure of any component of the drive system that the elevator host or the safe operation of the car depends on may cause abnormal operation of the elevator car door, which seriously threatens the personal safety of elevator passengers. [0003] In addition, there will be another abnormal movement of the elevator car when the door is open: the elevator car is far away from the landing door, and the gap between the car and the landing door is enlarg...

AI Technical Summary

Problems solved by technology

But there are still some deficiencies: some have complex structures, and more links will inevitably increase the probability of failure; The car moves backward away from the hall door; some do not meet the requirements of the elevator leveling accuracy range, which may easily cause unnecessary troubles

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