Probe-testing undercarriage for detecting steel rail waist

Abstract

The invention discloses a probe-testing undercarriage for detecting a steel rail waist. The undercarriage comprises two L-shaped supporting arms (1), a probe mounting plate (2), a guide wheel fixing frame (3), a guide wheel (4) and a universal device (5). In the undercarriage, the probe mounting plate (2) for mounting a probe is connected with the two L-shaped supporting arms (1) by the universaldevice (5); the balance action of a tension spring to the probe-mounting plate (2) is adopted, and thus the probe mounting plate (2) can adjust a self position according to a concrete arc surface of the steel rail waist to tightly match and follow a detection surface in the detection process so as to ensure favorable contact between the probe and the steel rail arc surface to be tested, lessen the clutter reflection, relatively improve the surplus sensitivity, the resolution and the signal-to-noise ratio, reduce a missing report rate and an error report rate, ensure the accuracy and the reliability of a testing result and the running safety, prolong the service life of the probe by lessening the overquick abrasion of a probe abrasion-resistant block, decrease the cost and increase the effect.

Description

technical field [0001] The invention relates to a probe flaw detection landing gear used for rail waist detection. Background technique [0002] At present, in the production process of the rail, it is necessary to conduct online flaw detection on the rail waist. In the actual detection, the flaw detection landing gear used for the probe in the flaw detection equipment cannot follow the movement, and the probe mounting plate used to install the probe is also fixed. It cannot be moved during the detection. During the detection, the probe of the flaw detection equipment is against the rail waist to be tested and is coupled between the two through water, and the inspection of the entire rail waist is completed through the flow of the rail on the production line. flaw detection. Due to mechanical factors and certain errors in the straightness of the rail itself, the probes of the existing flaw detection equipment are fixed as mentioned above, resulting in excessive gaps between...

AI Technical Summary

Problems solved by technology

Due to mechanical factors and certain errors in the straightness of the rail itself, the probes of the existing flaw detection equipment are fixed as mentioned above, resulting in excessive gaps between the waist surface of some rail sections and the probes during the flaw detection process. Large, cannot be fully coupled, resulting in missed detection, false detection and inaccurate flaw detection results

[0003] At the same time, the curved surface of the rail waist makes certain segments too tight when in contact with the wear-resistant block of the probe, which will cause accelerated wear of the wear-resistant block of the probe and affect the service life of the probe.

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