Steel belt broken wire detection method and system

Abstract

The invention provides a steel belt broken wire detection method and system. The steel belt broken wire detection method comprises the steps that an impedance electric signal is generated on a steel belt, then the impedance electric signal is obtained from the steel belt, and the steel belt broken wire condition is judged according to the impedance electric signal. The steel belt broken wire detection system comprises an impedance generation device used for generating the impedance electric signal on the steel belt and an impedance detection device which is used for acquiring the impedance electric signal from the steel belt and judging the wire breakage condition of the steel belt according to the impedance electric signal. The steel belt damage information can be accurately fed back in real time based on impedance detection, elevator safety accidents caused by steel belt damage can be effectively avoided, cost is low, debugging is easy, online detection can be achieved, the elevator Internet of Things can be incorporated, the detection timeliness is greatly improved, manpower is liberated, reliable reference is provided for future large-scale use, the system is matched with an elevator operation management system, so that the damage degree of the steel belt can be fed back in real time, and a reliable basis is provided for replacement of the steel belt.

Description

technical field [0001] The invention relates to a detection method and a system for detecting broken wires of a steel strip for ensuring the safety of an elevator. Background technique [0002] With the development of my country's cities and the advancement of urbanization, elevators have become an indispensable part of people's lives. At present, the number of elevators in my country has exceeded 7 million and is still increasing. Composite steel belt is a new load-bearing and transmission component developed on the basis of traditional steel wire ropes. Its core structure is side-by-side steel wire ropes with equal spacing inside. Because the elevator using this component has a higher safety factor, lighter weight, can reduce noise and vibration in the car, does not need lubrication, has a long service life, energy saving and environmental protection, it has been recognized by more and more users, and its market share has increased sharply. However, during the use of the ...

AI Technical Summary

Problems solved by technology

However, during the use of the elevator, due to the change of the microstructure and residual stress of the steel wire rope inside the steel belt due to the long-term stress of the steel belt, fatigue, deformation, wire breakage and other damage may eventually occur

However, the current non-destructive testing technology applied to steel strips is not perfect. The testing equipment based on electromagnetic flaw detection technology on the market has defects such as high cost, complicated debugging, and high requirements for the working environment.

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