An additional braking device for an escalator

Abstract

The invention relates to an auxiliary braking device for an escalator. The auxiliary braking device comprises a braking frame, a connecting rod, a reset part, a catch pawl frame, a catch pawl, a support frame and a ratchet wheel, wherein the connecting rod is arranged at one end of the braking frame, the reset part is arranged at the other end of the braking frame in a pivoting way and resets through the gravity, the catch pawl frame is connected with the connecting rod, the catch pawl is pivoted on the catch pawl frame, the support frame is fixedly arranged on the braking frame, the ratchet wheel is matched with the catch pawl and is provided with a driving main shaft, and the braking frame is fixedly provided with an electromagnet connected with the connecting rod and a switch used for controlling the work of the electromagnet. The auxiliary braking device has the advantages that the reset part realizing reset through the gravity replaces the existing spring, the reliability is good, the regulation on the elastic force of the spring is not needed, the maintenance is avoided, the maintenance cost is greatly reduced, meanwhile, the safe operation stop of the escalator is ensured, the accidental occurrence is prevented, in addition, the structure is simple, the braking is stable, during the braking, the retarded velocity is low, and the braking stop distance is short.

Description

technical field [0001] The invention relates to an additional braking device for an escalator. Background technique [0002] The escalator is a fixed electric drive device with circular running steps, which is used to transport passengers upward or downward. It has the characteristics of continuous operation and large transportation volume. It is widely used in subways, light rails, stations, airports, etc. Vertical transportation in public places such as wharves, shops and buildings, its structure is mainly composed of steps, step drive devices, drive hosts, transmission parts, tension devices, handrail devices, metal structures, step guide rails, upper and lower cover plates, comb plates, additional system However, when the safety circuit of the escalator is damaged due to various faults, especially when the traction chain is broken, the escalator will quickly fall under the action of its own weight and the weight of people and objects on the steps. If there is no effecti...

AI Technical Summary

Problems solved by technology

Among them, the return spring 3 is prone to failure after long-term use, and needs to be replaced and repaired frequently, and the elastic force of the return spring needs to be adjusted by adjusting the connecting rod 2 during maintenance, which causes inconvenience in maintenance, and its structure is complicated, and the braking is not stable. Large deceleration when braking and stopping, long braking distance

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