Suspended elevator anti-fall device

Abstract

The invention discloses a suspension type elevator anti-falling device, which comprises a control device and an anti-falling mechanism arranged on the top of an elevator car. There are two control devices and two anti-falling mechanisms respectively, and the control device and the anti-falling mechanism correspond one by one. Setting; the control device includes a weightless switch and an executive mechanism, and the weightless switch controls the anti-fall mechanism through the executive mechanism, so that the hook of the anti-fall mechanism is hooked on the blocker to realize the anti-fall function of the elevator car; the present invention adopts a mechanical The detection and control device method uses the weightlessness switch installed on the elevator car to open and close the weightlessness switch according to the weightlessness state caused by the overspeed descent of the elevator car, and realizes the braking of the anti-falling device. The detection speed of the anti-falling device is accurate, Reliable fault detection can significantly improve the working performance of the anti-fall device, and it can be automatically executed and closed, with a high degree of anti-fall automation and reliable elevator anti-fall performance.

Description

technical field [0001] The invention belongs to the technical field of safety in hoisting equipment such as elevators and elevators, and in particular relates to a suspension type anti-falling device for elevators. Background technique [0002] With the continuous development of urban construction and the continuous increase of high-rise buildings, elevators are widely used in the national economy and life. As a means of transportation running vertically in high-rise buildings, elevators are inseparable from people's daily life. However, when the elevator is in operation, the phenomenon of elevator falling occurs occasionally, which seriously threatens the safety of people's lives and property, and causes irreparable losses. [0003] At present, the anti-falling device used by elevators is composed of a set of systems such as speed governor, steel cable, tensioning device, and counterweight. The steel cable moves up and down with the elevator around the speed governor runne...

AI Technical Summary

Problems solved by technology

However, when the elevator is running, the phenomenon of the elevator falling occasionally occurs, which seriously threatens the safety of people's lives and property, resulting in irreparable losses.

[0003] At present, the anti-falling device used by elevators is composed of a set of systems such as speed governor, steel cable, tensioning device, and counterweight. The steel cable moves up and down with the elevator around the speed governor runner installed in the machine room on the top floor of the building. The tensioning device realizes the anti-falling function, but the steel cable of the existing overspeed governor type elevator anti-falling device is too long, and the steel cable will be as long as the building has, which makes this device have three disadvantages, One is that when the elevator fails and falls, the long steel cable is easily interfered by other objects (such as a broken traction rope) and cannot move due to a failure; The longer the extension under the action of tension, the longer the braking time will be, which will reduce the safety of the elevator. In the case of the elevator falling crisis in seconds, this is a shortcoming that cannot be ignored; the third is the length of the steel cable. Directly related to elevator cost, long steel cables necessarily lead to high costs

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