Multifunctional digital protector for protecting escalator from non-operable reversal

Abstract

The invention discloses a multifunctional digital protector for protecting an escalator from non-operable reversal. The multifunctional digital protector is in large-sized digital integrated modular design by means of the FPGA (field programmable gate array) technology and comprises an A-passage control circuit and a B-passage control circuit, each of the A-passage control circuit and the B-passage control circuit comprises an input port, a control signal processor, a safety relay and an output drive which are connected in sequence. The multifunctional digital protector protects the escalator from non-operable reversal and has the functions of overspeed protection, deficiency protection for steps and pedals, protection for abnormal release of a brake system and speed range of handrails deviated from the steps and the pedals and monitoring of brake distance and the like after the escalator is started.

Description

technical field [0001] The invention relates to a power electronic device, in particular to a multifunctional digital protector for preventing non-manipulated reversal of an escalator. Background technique [0002] The escalator includes escalators and moving walks. It is a kind of power drive, which realizes the function of carrying people and goods through the steps transmitted along the transmission chain horizontally or with a certain inclination. As a means of transportation, escalators are widely used in public places such as shopping malls, docks, hotels, etc., realizing the function of transportation and bringing convenience to people's production and life. [0003] Since the escalator is a kind of public transportation, once it breaks down, it will bring immeasurable damage to personal and property. In recent years, accidents about elevators and escalators have occurred frequently. Most of the accidents are caused by the fact that the safety circuit of the existing...

AI Technical Summary

Problems solved by technology

In recent years, accidents about elevators and escalators have occurred frequently. Most of the accidents are caused by the fact that the safety circuit of the existing elevator and escalator control system is not equipped with protection devices such as anti-non-manipulation reversal, overspeed and other safety components.

At the same time, due to the fact that the current escalator standard "Safety Specifications for the Manufacture and Installation of Escalators and Moving Walks" does not implement the non-manipulation and reversal prevention as a mandatory indicator, the manufacturers of escalators have to implement the escalator anti-non-maneuvering reversal and overspeed protection devices. Insufficient attention has caused safety hazards of escalators

In view of frequent escalator accidents, there is an urgent need in this field for a technology that can effectively prevent non-manipulated reversal of escalators and provide overspeed protection for escalators, prevent the occurrence of escalator reversal accidents, and avoid serious consequences of personal and property losses

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