Suspension type elevator anti-falling device

Abstract

The invention discloses a suspension type elevator anti-falling device. The suspension type elevator anti-falling device comprises control devices and anti-falling mechanisms, all of which are arranged at the top of an elevator car. The two control devices and the two anti-falling mechanisms are arranged in a one-to-one correspondence mode. The control devices comprise weight loss switches and executing mechanisms. The weight loss switches control the anti-falling mechanisms through the executing mechanisms, so that hooks of the anti-falling mechanisms are hooked on stoppers to achieve the anti-falling function of the elevator car. A mechanical detection control device mode is adopted, the weight loss switches on the elevator car are turned on and off according to the weight loss state generated by over-speed descent of the elevator car, braking of the anti-falling device is achieved, the anti-falling device is high in detection speed and reliable in fault detection, the working performance of the anti-falling device can be remarkably improved, the anti-falling device can be automatically started and stopped, the anti-falling automation degree is high, and the anti-falling performance of the elevator is reliable.

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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