Safety protecting system of elevator door zone

Abstract

The invention discloses a safety protecting system of an elevator door zone, mainly comprising a control device, a first feedback element arranged on a driving device, and a second feedback element arranged on a rope wheel. When the control device monitors the condition that an elevator is open and the rotating displacement of an active wheel fed back by the first feedback element arranged on the driving device exceeds a set value, the control device sends out a braking command for controlling the driving device to apply reverse force in order to prevent the driving device from rotating; when the control device monitors the condition that the elevator is open and the rotating displacement of the rope wheel fed back by the second feedback element arranged on the rope wheel exceeds the set value, the control device sends out the braking command for controlling a speed restriction spacing device to trigger a safety clamp device to act; and a car of the elevator is firmly clamped on guiding rails. The safety protecting system is used for monitoring slippage and glide when the elevator door zone is open, actively executes a safety protecting function and effectively avoids generating serious accidents of clamping passengers and the like.

Description

technical field [0001] The invention relates to a safety protection system for an elevator door zone. Background technique [0002] As a means of public transportation, the most important performance index of elevators is safety. Among them, the safety of operation control is the most important. Especially the failure that occurs when the elevator opens and closes the door is the most dangerous. When the elevator is in the state of opening the door and passengers enter and exit the elevator, if the elevator car slips and slides due to a fault at this time, and the existing safety protection measures of the elevator are not enough to control the sliding of the car, it will cause shearing. A vicious accident with exit passengers. The reasons for the slippage of the elevator car when the door is open may be: [0003] a) Insufficient traction caused by overload; [0004] b) Insufficient braking force caused by overload; [0005] c) Steel wire rope wear or oil stains caused...

AI Technical Summary

Problems solved by technology

[0013] (1) When the elevator car slips and falls at a higher floor station, the safety buffer system does not work at all, and the vicious accident described in a) above cannot be avoided;

[0014] (2) When the elevator car slips and falls at the lower floor station, if the speed is fast, even if it hits the bottom safety buffer system, the instantaneous deceleration will still cause serious damage to the passengers in the car (especially the elderly and children) )s damage

[0015] Therefore, the elevator safety protection system that satisfies the existing elevator safety installation and manufacturing specification conditions still has certain defects, especially the slipping and slipping of the elevator when the door is opened in the door area, and it is in the blind area of ​​safety protection. Most of the elevator accidents are caused by this

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