In-service steel rail tread eddy current flaw detection device

CN224286805UActive Publication Date: 2026-05-26SICHUAN YAOCHENG NONDESTRUCTIVE TESTING TECH CO LTD

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: SICHUAN YAOCHENG NONDESTRUCTIVE TESTING TECH CO LTD
Filing Date: 2025-03-31
Publication Date: 2026-05-26

AI Technical Summary

Technical Problem

Existing eddy current testing technology for rail treads suffers from problems such as insufficient probe coverage and difficulty in maintaining a stable relative position between the probe and the rail tread, resulting in large errors in the detection data and affecting the accuracy of the testing results.

Method used

Design an eddy current flaw detection device for in-service rail treads, employing a floating alignment frame and adaptive components, including horizontal and vertical adaptive components, to ensure stable engagement between the probe and the rail. Multiple eddy current flaw detection heads form an intersecting detection zone covering the tread, and a processing host is equipped for data processing.

Benefits of technology

This achieved stable coverage of the probe on the rail tread, improving flaw detection efficiency and accuracy of results, and ensuring the precision of detection data and the reliability of online detection.

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Abstract

The utility model relates to the technical field of steel rail flaw detection, in particular to an in-service steel rail tread eddy current flaw detection device which comprises a detection frame body, a floating position correcting frame is connected to the detection frame body and comprises a horizontal self-adaption assembly and a vertical self-adaption assembly, and a plurality of eddy current flaw detection heads are arranged below the floating position correcting frame. A cross detection area is formed between every two adjacent eddy current flaw detection heads, so that the total detection area covers the tread of the steel rail; the detection frame body is also provided with a processing host, and the processing host is used for receiving and processing the detection data. By adjusting and improving the structure of the flaw detection device, the floating position correcting frame is always attached to the steel rail for flaw detection, self-adaptive matching is realized, the flaw detection distance of the eddy current flaw detection head is ensured to be stable, flaw detection data acquired by the eddy current probe is more accurate, online detection is realized along the steel rail, and the flaw detection efficiency is improved.

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