Electromagnetic brake capable of preventing accidental moving of elevator car and braking method

Abstract

The invention discloses an electromagnetic brake capable of preventing accidental moving of an elevator car and a braking method. The electromagnetic brake comprises a shell body, an upward moving brake connected to a rope clamping device as well as a downward moving brake connected to a speed limiter steel wire rope and safety tongs, wherein the upward moving brake and the downward moving brake are installed in the shell body and connected to a running circuit of the elevator car in parallel. The electromagnetic brake capable of preventing the accidental moving of the elevator car disclosed by the invention has the advantages that the structure is simple; design is novel; two groups of electric magnets and relevant mechanical components are reduced to brake accidental upward moving and accidental downward moving of an elevator respectively; braking effects are good; a safety coefficient is high; a two-stage braking mechanism is adopted for the accidental moving which can hardly be predicted, so that safety performance is ensured; and the electromagnetic brake disclosed by the invention effectively prevents continuous ascending or descending of the elevator car taking place after an elevator car door or a floor door is opened and can effectively ensure safety of people who take the elevator.

Description

technical field [0001] The invention relates to the field of elevator control systems, in particular to an electromagnetic brake and a braking method for preventing accidental movement of an elevator car. Background technique [0002] At present, my country has become the largest country in the world in terms of elevator manufacturing volume and the number of elevators in use. Elevators have become an indispensable means of transportation for people's daily life. How to improve the level of safe operation of elevators, prevent and reduce the occurrence of malignant accidents has become a social issue. focus of attention. [0003] In existing elevators, due to reasons such as the opening of the car and landing doors, failure of the traction machine brake, or wear and tear of the traction sheave, the wire rope slips, etc., causing the elevator car to move unexpectedly, thus causing the elevator to hurt people. At present, the industry has researched and developed the detection...

AI Technical Summary

Problems solved by technology

[0003] In existing elevators, due to reasons such as car, landing door opening, traction machine brake failure or traction sheave wear, the wire rope slips, etc., causing the elevator car to move unexpectedly, thus causing the elevator to hurt people.

At present, the industry has researched and developed the detection method for the unexpected movement of the elevator car and some related protective measures or protective devices, but the braking mechanism of these protective measures or protective devices is complicated, and the braking safety components must be replaced, which is costly and labor-intensive.

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