Novel electromagnetic sensor system for detecting steel wire rope defects

Abstract

The invention concretely discloses a novel electromagnetic sensor system for detecting steel wire rope defects. The novel electromagnetic sensor system comprises a sensor case, permanent magnets, a detection circuit and a detection circuit board support frame, wherein the sensor case uses a subdivision type structure; the bottom of the sensor case is provided with a through hole; a detection circuit board support frame installing groove is formed inside the sensor case; the detection circuit board uses a transversely zygomorphic semicircular structure; the permanent magnets are embedded at the two ends of the sensor case in a coaxial and concentric arrangement way; threaded holes are formed in the upper side of the detection circuit board support frame. The novel electromagnetic sensor system has the beneficial effects that an electromagnetic sensing technology is applied into the steel wire rope defect detection; the real-time processing and automatic nondestructive examination of the steel wire rope defects is realized; in addition, various defect conditions can be detected at the same time.

Description

technical field [0001] The invention relates to a detection device, in particular to an electromagnetic sensor system for detecting internal and external defects of a steel wire rope, especially capable of realizing multiple defect measurements with one sensor. Background technique [0002] Internationally, wire rope defects are generally classified into two categories: loss of metal cross-sectional area (LMA for short) type defects and local flaw (LF for short) type defects. The LF type defect reflects the local damage of the wire rope such as broken wire, and the LMA type defect reflects the damage of the wire rope over a long distance such as long-distance wear and corrosion. However, most of the current domestic instruments used to detect steel wire ropes can only detect one of the defect types, and the detection accuracy is not high. Some instruments do not process the detection signals in place, and interference signals are prone to affect our misjudgment of defects; ...

AI Technical Summary

Problems solved by technology

However, most of the current domestic instruments used to detect steel wire ropes can only detect one of the defect types, and the detection accuracy is not high

Some instruments do not process the detection signals in place, and interference signals are prone to affect our misjudgment of defects; while the traditional manual visual inspection method is easily affected by personal subjective factors, and the false detection rate is high; it is used for wire rope detection at home and abroad. The accuracy of the instruments is uneven, and most of the instruments cannot effectively detect the defects in the wire rope, and false detections and missed detections occur from time to time

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