Elevator capable of preventing elevator car from moving accidently

Abstract

The invention discloses an elevator capable of preventing an elevator car from moving accidently. The elevator comprises a main control unit and an elevator car accidently-moving protecting device, wherein the elevator car accidently-moving protecting device comprises a brake control unit, a tractor operation control unit, a detection unit and a signal processing unit; the detection unit is used for detecting whether the elevator car deviates from a flat floor position; a signal output end of the detection unit is connected with a detection signal input end of the signal processing unit; a brake control signal output end of the signal processing unit is connected with a control signal input end of the brake control unit; a control signal output end of the brake control unit controls a power supply input end connected with a brake; a tractor operation control signal output end of the signal processing unit is connected with a control signal input end of the tractor operation control unit; and a control signal output end of the tractor operation control unit controls a power supply input end connected with a tractor. Through simultaneous control on the brake and the tractor, the purpose of preventing the elevator car from moving accidently with a double mechanism is reached.

Description

technical field [0001] The present invention relates to elevators, and more particularly to an elevator that prevents unintentional movement of the car. Background technique [0002] At present, there are nearly 4 million elevators in my country, and more than 600,000 new elevators are added every year. It has become the world's largest elevator manufacturer and the largest number of elevators in use in the world. Elevators have become an indispensable means of transportation for people's daily life. How to improve the safe operation level of elevators, prevent and reduce the occurrence of vicious accidents has become the focus of social attention. The new elevator standard requires elevator manufacturers to install accidental car movement protection devices; and the existing car accidental movement protection devices The technical solution is mainly: the implementation of electronic speed limiter + rope clamp / rail clamp / two-way safety gear. The speed limiter installed in ...

AI Technical Summary

Problems solved by technology

[0005] Problems existing in the existing technical solutions: Since the existing speed limiter is non-electronic, the safety gear is also one-way, and most of the rope grippers do not have it, so the electronic speed limiter is used to cooperate with the rope gripper / The way of rail clamp / two-way safety gear needs to increase the cost on the existing basis, and the use of electronic speed limiter and two-way safety gear will increase the complexity of debugging

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