Power-losing trigger device

Abstract

The invention discloses a power-losing trigger device. The power-losing trigger device comprises a frame, an electromagnet and an impacting rod; the impacting rod vertically and movably penetrates through the frame, the upper end and the lower end of the impacting rod are located outside the frame, a limiting buffer cushion is installed on the upper section of the impacting rod, and the lower end is the impacting end. The electromagnet is installed on the frame; an energy storage piece is arranged and has a downward action force on the impacting rod; when the electromagnet is electrified, the impacting rod is positioned through electromagnetic force; when the electromagnet loses power, the keeping force of the electromagnet on the impacting rod is lost, and the impacting rod performs the downward impacting motion under the action force. The power-losing trigger device is implemented through the electromagnet and a middle mechanism, and the electromagnetic force for maintaining the electromagnet is reduced through the middle amplifying mechanism, so that the current, the energy consumption and the cost of the electromagnet are reduced, the service life of the long-time electrification electromagnet is prolonged, automatic resetting of the electromagnet can be achieved, the electromagnet, an energy storage impacting structure and a resetting structure of the power-losing trigger device are simple, and the power-losing trigger device is convenient to use.

Description

technical field [0001] The invention belongs to the technical field of mechanical manufacturing, and relates to a trigger device for a wire rope brake for an elevator, in particular to a power-off trigger device. Background technique [0002] At present, the lock hook of the steel wire rope brake for elevators is triggered by the electric trigger method, and the electric trigger control method has the absence of external power supply, insufficient backup power supply, circuit and equipment failure, and the trigger device cannot trigger the switch of the brake (lock hook ) institutions, resulting in a high degree of security risk. Specifically, the electric trigger method has a long vertical and horizontal safety chain, and the vertical safety chain from the power supply, control logic unit, electromagnet, backup power supply to the trigger device is relatively long, and there are many fault detection and monitoring links in the horizontal electric triggering process. It is ...

AI Technical Summary

Problems solved by technology

[0002] At present, the lock hook of the steel wire rope brake for elevators is triggered by the electric trigger method, and the electric trigger control method has the absence of external power supply, insufficient backup power supply, circuit and equipment failure, and the trigger device cannot trigger the switch of the brake (lock hook ) institutions, resulting in a high degree of security risk

Specifically, the electric trigger method has a long vertical and horizontal safety chain, and the vertical safety chain from the power supply, control logic unit, electromagnet, backup power supply to the trigger device is relatively long, and there are many fault detection and monitoring links in the horizontal electric triggering process. It is difficult to achieve fault-free monitoring and feedback. A fault in one of the links will cause a fatal risk of failure of the switch (locking) mechanism, making the brake unable to operate. slow, high power consumption

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