Locomotive car wheel fault detecting device based on phased array probe

Abstract

The invention relates to a locomotive car wheel fault detecting device based on a phased array probe. A probe bracket connected with a control mechanism is connected with ultrasonic phased array probes which are positioned on a tread surface of a wheel pair. The lower part of the tread surface of the wheel pair is positioned on a top wheel and a rotating wheel of a top rotating wheel device. The ultrasonic phased array probes are connected with a data processing and control computer. The number of the phased array probes is two, i.e. a left probe and a right probe. The left probe and the rightprobe are equidistantly far away from wheel rims and keep an axial distance of 0-10 mm from a wheel rolling circle. The length of an arc distance from the left probe and the right probe on the wheelrolling circle is 220-400 mm. Torsion angles of axes of the left probe and the right probe with the surface of the wheel rolling circle are same, wherein the torsion angle is 0-30 DEG C. The detectingdevice can automatically detect a wheel spoke fault from the tread surface in an online manner and realizes high detection efficiency and detection result accuracy. In addition, the detecting devicehas a simple structure and is convenient to use and operate.

Description

technical field [0001] The invention relates to an ultrasonic flaw detection device for the wheel spoke area of ​​a locomotive vehicle. Background technique [0002] The wheel is a key component of the rolling stock running system including the EMU, and its basic structure is as follows: figure 1 As shown, it includes: a rim 63 , a tread 64 , a rim 62 , a spoke 61 , a web plate hole 611 , and a hub 60 . The inner state of the wheel 6 and the cracks on the surface are directly related to driving safety. The rapid development of railway speed-up and the rapid construction of high-speed EMUs put forward higher requirements for the quality of wheels. In order to avoid accidents caused by defective wheels during operation and ensure the safety of trains, it is necessary to perform flaw detection on the wheel rim and spoke parts. At the same time, in order to improve the operating efficiency of high-speed trains, it is required to carry out online detection (flaw detection) on ...

AI Technical Summary

Problems solved by technology

[0003] Since the distance between the rim 62 of the wheel and the tread 64 is small and the structure is not much different, the flaw detection of the rim 62 is easier than that of the spoke area; while the structure of the spoke 61 is complex and the distance from the surface of the tread 64 is relatively long. The entire spoke 61 area requires a large number of probes, and the layout of the probes is strictly required, especially the space constraints of online detection are greater

At present, there is no simple and effective method for online automatic detection of the spoke 61 area

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