Door-knife door-lock device for elevator door

Abstract

A door knife door lock device for an elevator car, comprising a door knife device and a door lock device, the door knife device and the door lock device are fixed on the door knife bottom plate, and the door knife bottom plate is fixed on the door machine hanging plate of the elevator car, The lock seat is fixed on the seat plate, and its technical points are: the upper connecting plate sleeve is fixed on the upper connecting plate of the door knife device, and the rear side of the upper connecting plate is connected to the transmission device; the hinge belt of the lock body shaft fixed on the door knife bottom plate The lock body of the lock hook and the contact of the moving door switch, the limit frame with the limit bolt is also fixed on the seat plate, and the door knife bottom plate between the upper connecting plate and the limit bolt of the door knife device is hinged with a concave The shifting frame of slot, bump ear and torsion spring is arranged on the door knife base plate and the door knife is parallel to the strike plate hinged successively by the shaft and the connecting plate, and the lock body cover is fixed on the outward lock body of the strike plate. The present invention has reasonable structural design, safe use, and convenient installation. When the car door is locked, except professionals who can open it with a manual unlocking device on the outside, no one can open it from the outside under normal conditions.

Description

technical field [0001] The invention belongs to the technical field of elevators, in particular to an elevator car door knife door lock device for locking the horizontal sliding car door of a vertical lifting elevator. Background technique [0002] With the improvement of people's quality of life, most of the residential quarters and office buildings are equipped with elevators. Its universal application has brought great convenience to people. Sex is pretty important. In order to ensure the safe operation of elevators, many countries have made clear regulations in elevator installation and safe use regulations. For example, Russia's current elevator installation and safe use regulations stipulate that "when the car is located between landing (loading) platforms, the possibility of opening the car door from the inside by hand should be excluded." There are also relevant regulations in our country's standards: when the horizontal distance between the inner surface of the ho...

AI Technical Summary

Problems solved by technology

There are also relevant regulations in our country's standards: when the horizontal distance between the inner surface of the hoistway and the car sill or car door frame or car door is too large (greater than 0.15m), possible accidents should be avoided; the said accident That is, when the above-mentioned horizontal distance is too large, the elevator does not break down in the door opening area or stops running due to a power failure. Passengers in the elevator car door may open the car door by themselves to escape, but the passengers do not know the car at this time. In any position, due to the above distance, it will cause damage to the feet (legs) of passengers. What is even more dangerous is: when the elevator fault is restored or the power is turned on again, the car door close limit switch fails, and the elevator will restart to run for passengers. cause greater personal injury or even life-threatening

There are roughly two methods for eliminating the above distance: one is to add a rigid and non-combustible partition wall on the inner surface of the hoistway, which is costly and prolongs the installation period of the elevator; the other is to install car door locks. Some car door locks have various structures, but their safety performance is unstable

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