Novel safety device for elevator falling

Abstract

The invention provides a novel safety device for elevator falling. The novel safety device comprises a car, a lifting mechanism, an opening transmission mechanism, a buffering and damping mechanism, a lower-lifting-lug locking mechanism for the buffering and damping mechanism and an anti-falling electric control system. The lower-lifting-lug locking mechanism for the buffering and damping mechanism comprises a guide plate, a limiting boss and a locking device. The guide plate is arranged in an elevator shaft, the limiting boss is welded on the guide plate, and a lock pin of the locking device is vertically aligned to an arc recessed surface of the bottom of the limiting boss. The center line of the lock pin coincides with the center line of the arc recessed surface of the limiting boss. The novel safety device has the advantages that the safety device is not influenced by factors such as excessive wear of safety gears and greasy dirt, dust and humidity in the elevator shaft, and action time of the device is stable and reliable; the safety stopping position of the car is fixed, and a car door faces an elevator door in a corridor directly, so that damage to a building is avoided during rescue, escape is facilitated, and zero rescue cost is achieved; after a safety protection task is completed by the device, the device is simple and easy to unlock and long in service life.

Description

technical field [0001] The invention belongs to the field of elevator safety protection, and in particular relates to a novel elevator fall safety protection device. Background technique [0002] With the rapid development of my country's economic construction and the acceleration of urbanization, elevators have become indispensable vertical transportation equipment in high-rise buildings. According to statistics, the scale of elevator procurement in my country has been at a relatively high growth level, with a growth rate of about 30%. As of the end of 2013, the number of elevators in my country has exceeded 3 million, becoming the veritable largest country in terms of production, sales and ownership. While the domestic elevator industry is thriving, frequent elevator failure incidents have become the focus of public and media attention. Elevator failures can cause incidents such as outage of elevators in the building, paralysis, and trapped people, and serious casualties...

AI Technical Summary

Problems solved by technology

[0004] (1) The long-term clamping friction of protective devices such as safety gears causes excessive wear or is affected by oil, dust, humidity, etc. in the elevator shaft, which reduces the friction coefficient, shortens the service life of the elevator and increases the braking distance;

[0005] (2) Due to the deceleration through friction, it is impossible to accurately locate where the car can stop. If it stops in the middle of the floor, it will be difficult to rescue, and the occupants will also suffer secondary injuries due to being trapped for too long or climbing out of the car;

The safety gear does not return to normal state, the elevator cannot be used again

It takes a long time for the elevator to return to normal operation, which brings a lot of inconvenience to travel, and requires professional maintenance personnel to go through the elevator shaft to the top of the car to unlock. The unlocking procedure is cumbersome and slow, and there is a risk of secondary accidents

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