High-rise elevator rope-breaking safety protection device and method

Abstract

The invention discloses a high-rise elevator rope-breaking safety protection device and method. The device comprises an elevator lift car and an elevator shaft wall; the elevator lift car is disposedin the elevator shaft wall; and a braking protection device is disposed on the elevator lift car. When rope breaking occurs, an elevator steel wire rope loses pulling force on a fixing sleeve, under pushing of detection springs, the fixing sleeve moves downwards to drive a locking pull rod to be separated from a locking wheel, a locking effect on an advancing gear disappears, driving springs are contracted to generate a downward pulling force, an advancing rack moves downwards, a double protection measure is started in the process of downward movement of the advancing rack to perform braking and speed reduction of safety tongs on an elevator, then the speed is reduced the moment the elevator falls, a sliding block at the lower end drives a sliding rack to move downwards, then driving gearsare driven to rotate, driving rods connected with the driving gears rotate towards the outer side, push rods are driven to push braking stop rods, the braking stop rods can make contact with brakingtables, and therefore the elevator lift car is prevented from falling beyond one floor.

Description

technical field [0001] The invention relates to the technical field of elevator safety, in particular to a high-rise elevator broken rope safety protection device and protection method. Background technique [0002] Elevator refers to the permanent transportation equipment that serves several specific floors in the building, and its car runs on at least two rigid rails that are perpendicular to the horizontal plane or at an inclination angle of less than 15° from the plumb line. At the end of the 20th century, elevators used permanent magnet synchronous traction machines as power. It greatly reduces the area occupied by the computer room, and has the advantages of low energy consumption, energy saving and high efficiency, and fast lifting speed, which greatly promotes the development of real estate in the direction of super high-rise buildings. [0003] Modern elevators are mainly composed of traction machine winch, guide rail, counterweight device, safety device (such as s...

AI Technical Summary

Problems solved by technology

[0006] (1) When the elevator is under heavy load, when there is a fault such as a broken rope, the impact force of the fall is very large, which is likely to cause a strong collision between the action rod and the safety platform, and in severe cases, it will cause damage to the safety platform;

[0007] (2) When the falling speed is fast, the extension speed of the action rod is slow, and it is easy to be placed on the safety platform in time to cause slipping

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