Rope wheel brake

Abstract

The invention discloses a brake device or a pawl device used for acting between the inner surface of a shaft, a cage or a skip and the inner surface of a fixing and guiding component or a winch gallery or a lift shaft, and aims at providing a rope wheel brake which is simple in structure, high in safety and capable of closing a rope wheel according to other signals. According to the rope wheel brake, a PLC receives a signal of a sensor, makes a judgment and controls an electromagnet to enable the electromagnet to control a push rod and a connecting rod, and the effect of controlling idler wheels to move up and down is achieved. The distance between the lower end face of a boss and the circumferential face of a brake disc becomes smaller gradually, the brake disc radial direction component force of the pressure between the idler wheels on one side and the lower end face of the boss and the upper end face of the brake disc on the other side becomes larger gradually, the brake disc radial direction component force of the rotation force of the brake disc becomes larger gradually, the friction force becomes larger gradually, and the brake disc is braked. The effect of rope wheel braking is achieved through the contacted friction force between the brake disc and the rope wheel.

Description

technical field [0001] The present invention relates to a control device for an elevator, in particular to a brake or pawl device for acting between a car, cage or skip and a fixed guide element or hoistway or the inner surface of the elevator shaft. Background technique [0002] "It was so miserable, the blood vessels in his neck were torn, and blood was sprayed everywhere in the elevator room!" The witness, Mr. Chen, was still shaking when he recalled it. At about 11:30 on May 15, 2013, in the No. 1 elevator of Changhong Building, Sungang East Road, a female intern nurse of Pengcheng Hospital was caught in the head while taking the elevator, and the elevator finally fell to the first floor. The woman died at the scene. The management office said that the initial suspicion was that the accident occurred due to a malfunction of the elevator. [0003] my country's utility model patent elevator speed limiter, the authorized announcement number is CN201211988Y, and the author...

AI Technical Summary

Problems solved by technology

However, when the elevator moves unexpectedly, if the actual speed of the elevator does not exceed the action speed set by the speed limiter, such as when the elevator door is open and the elevator car is still moving, the speed limiter will not produce corresponding actions, and the corresponding safety The device will not play the role of braking the elevator, and there is no other braking device to brake the elevator

This has just brought very big potential safety hazard to the use of elevator

[0004] The disadvantage of the elevator speed limiter of this invention is that it cannot be closed according to other signals, and the safety performance is low.

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