Steel cord belt flaw detection system and detection method therewith

Abstract

The invention relates to a steel cord belt flaw detection system and a detection method therewith. The system is characterized in that: a magnetizer distributing at the front of the steel cord belt and a detection sensor distributing at the back of the steel cord belt are connected with an underground fiber receiver, a ground fiber receiver, an underground computer, and a ground computer. The method comprises the following steps: a steel cord array in a magnetized belt of the magnetizer generates a stray field when detection is performed; the detection sensor detects magnetic signals and converts the magnetic signals to electrical signals; the electrical signals are sent to the underground computer after pretreating and carrying out digital / analog conversion; an analysis result of the underground computer is sent to a belt conveyor operation controller; and the other result is sent to the ground computer through the underground fiber transceiver, optical cables and the ground fiber transceiver. By adopting the system and the method of the invention, the magnetizer and the detection sensor are stationary when the adhesive tape normally operates. When defects appear, a belt conveyer is stopped through the belt conveyer operation controller, detection data are sent to the ground computer through the ground fiber transceiver, the underground fiber transceiver, and the communicating optical cables to analyze, display and store. The system of the present invention which is convenient to manufacture and use can monitor in real time and accurately detects damages of strand break, cord break, splice displacement and the like.

Description

technical field [0001] The invention relates to a technology for non-destructive detection of broken strands, broken ropes, and slippage of braided joints of steel wire ropes in steel wire rope core tapes. Background technique [0002] Belt conveyor is a common continuous transportation equipment in metallurgy, electric power, mining and other enterprises. Steel cord conveyor belt is its key component. Damage will appear after a period of time. The conveyor belt cannot be infinitely long, and a fixed-length conveyor belt is often braided from the end to the end to form an endless conveyor belt. Because it is not an integral structure, the performance of the conveyor belt will be greatly affected, and the knitting part between the conveyor belt and the conveyor belt is the weakest link. After the conveyor belt bears a certain period of pressure and tension, the splicing parts will loosen. The direct consequence of the splicing joint loosening is the decrease in bearing capa...

AI Technical Summary

Problems solved by technology

After the conveyor belt bears a certain period of pressure and tension, the splicing parts will loosen. The direct consequence of the splicing joint loosening is the decrease in bearing capacity. When the slippage of the splicing joint reaches a certain value, the conveyor belt will break

At present, there is no effective way to monitor the steel wire rope in the steel cord conveyor belt. The main reasons are as follows: the steel wire rope is buried under the rubber layer, and the conventional method cannot detect its change; the steel wire rope in a section of the conveyor belt has There are dozens or even more than a hundred roots. Therefore, the monitoring system has to deal with a huge amount of data, which directly affects the subsequent signal processing and analysis. Simply relying on existing equipment cannot meet the monitoring requirements of large data volume and real-time performance.

[0003] Although the ray method currently used is a relatively mature method for inspecting the internal conditions of metals, for steel cord conveyor belts, the three-dimensional steel wire rope is projected onto the two-dimensional film, and the looseness of the joint cannot be distinguished at all. In addition, there are too many joints, and it is impossible to realize the comprehensive monitoring of the joints. Therefore, a large number of missed inspections are inevitable;

[0004] At present, there are 2-3 kinds of detection systems for steel cord conveyor belts appearing on the market one after another. The magnetizer and detection sensor adopt an integral structure, which brings a lot of trouble to the manufacture.

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