Falling prevention type safety control system for elevator

Abstract

The invention specifically relates to an elevator anti-fall safety control system, and aims to provide an anti-fall safety system with simple structure, low cost, safety and reliability, and effective protection of passengers. The system includes an airbag assembly, the airbag assembly includes a safety airbag, a gas generator, an ignition device for the gas generator, and an electronic controller; the airbag assembly is arranged directly below the elevator door opening and in a horizontally arranged placement hole on the side wall of the elevator shaft Inside, a placement hole and an air bag assembly are also arranged on the side wall on the other side of the elevator shaft opposite to the placement hole, a speed sensor and a height sensor are arranged in the car, and the output signals of the speed sensor and the height sensor are transmitted to electronic controller. When the car falls, one or several airbag components below it that are closest to the car will act immediately to open the airbag, so that the speed of the car’s fall will be quickly reduced to a stop. Since the falling impact force of the car is small, it can effectively Protect the safety of passengers.

Description

technical field [0001] The invention relates to the technical field of elevator safety, in particular to an elevator fall prevention safety control system. Background technique [0002] The current car-type elevators are all equipped with emergency braking devices. When a safety failure occurs, such as abnormal elevator speed, the brake shoes are usually used to clamp the elevator guide rail to produce braking. However, when the elevator guide rail breaks or other failures occur, emergency The braking device will fail and cannot work; when the car is on a higher floor, the safety of passengers cannot be guaranteed. When the guide rail breaks and the car falls, the safety protection measures for passengers in the car are as follows: a buffer device is installed at the bottom of the car elevator, as in the prior art CN201320894008, an airbag assembly is arranged at the bottom of the car When falling, rely on the buffer device at the bottom of the car or the bottom of the elev...

AI Technical Summary

Problems solved by technology

The technology in this patent may cause the danger of failure due to the failure of the braking mechanism. At the same time, the side wall of the elevator passage is often damp and the friction coefficient is reduced, which increases the risk of failure of the braking mechanism.

When the car brakes in the elevator shaft, it is impossible to control the stop position of the car after braking. If the car is parked between two floors, the car door is difficult to open and rescue work cannot be carried out.

[0004] Another way is to set the safety guide rail separately in the elevator shaft for contact friction braking, which will add an additional set of guide rail mechanism, which will increase the equipment cost and the difficulty of later maintenance and repair

Images