Ultrasonic detection system and detection method for hollow axle of EMU

Abstract

An ultrasonic detection system for a hollow axle of an EMU mainly includes: a probe rod module, a motor control module, a UT (ultrasonic flaw detection) module and user software. The working process of the system is as follows: After logging in the user software, configure the detection shaft type and detection parameters, and drive the two motor modules to run. The motor module drives the rotation motor and the feed motor, the rotation motor drives the rotation of the probe rod, and the feed motor drives the movement of the probe rod through the hinge. Multiple probes of different types are installed at different positions on the probe rod. The probe is controlled by the UT module, which receives the reflected ultrasonic waves after sending them, and uploads the ultrasonic flaw detection data to the user software. After the data processing and transformation of the user software, the system can display the A-scan and intuitively draw the B-scan and C-scan, so that it can quickly judge the existence of defects, the location and size of internal defects, and has storage, playback, View and other functions.

Description

Technical field [0001] The present invention relates to the technical field of non-destructive testing, and more specifically, to an ultrasonic testing system for internal defects of hollow axles of EMUs. Background technique [0002] The hollow axle of the EMU is one of the important parts of the train. The operation and load condition of the hollow axle in actual use is more complicated. It not only bears the braking force and the reaction force of the steel rail, but also bears the impact load from the line and acts laterally when passing through the curve. The guiding force of the rim. In addition, each of the matching parts of the axles has different magnitudes of axial force, radial force, shear force, bending moment, torque and other loads acting alone or together, so the axle is easily damaged during train operation. From ordinary trains, express trains, EMUs to high-speed railways, the speed is greatly improved. In the state of high-speed operation, the requirements for...

AI Technical Summary

Problems solved by technology

During the detection process, only the real-time A-scan display can be realized, and the B-scan and C-scan display can not be displayed in real time. After the detection is completed, the playback must rely on manual interpretation to obtain detailed information such as the size of the defect location.

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