Device and method used for automatic nondestructive test of painted crossbeams

Abstract

The invention belongs to the technical field of high-speed train body detection equipment, and especially relates to a device and a method which are used for automatic nondestructive test of painted crossbeams. A moving platform of the device is arranged at the bottom of a crossbeam to be tested, and is capable of walking along the length direction of the crossbeam; one or a plurality of probe assemblies are fixedly arranged on the moving platform respectively; each probe assembly is provided with a probe main body; each probe main body is designed to match the surface of any position to be tested on the crossbeam, so that a single probe assembly can be used for detection of a single position of the crossbeam, or a plurality of probe assemblies can be combined for comprehensive detection of the molded surface of the crossbeam; a flaw detector is connected with the probe assemblies respectively for analysis of detected data, and rapid determination of damaged parts. The detection methodis invented based on the device. The device and the method can be used for direct detection of train body painted crossbeams, no extra paint removing step is needed, the detection process is safe andaccurate, and the external paint of crossbeam frameworks is not damaged.

Description

technical field [0001] The invention relates to the technical field of detection equipment for a car body of an EMU, in particular to an automatic non-destructive detection device and method for a painted beam. Background technique [0002] my country's EMU maintenance is divided into five levels according to the nature, scope and depth. The first and second levels are operation repairs, which are undertaken by the EMUs; the third to fifth levels are disassembly maintenance, which are repaired at the EMU depot or returned to the factory for maintenance. [0003] At present, when the dismantled aluminum alloy car body of the EMU is returned to the factory for maintenance, it is necessary to perform flaw detection on the beam of the underframe of the car body. During the paint removal step, the fluorescent penetrant is artificially sprayed on the beam for flaw detection. The workload of this flaw detection process is very large, and the fluorescent penetrant used has certain t...

AI Technical Summary

Problems solved by technology

The existing method does not detect the actual painted parts, so in the detection, because there is a certain gap between the comparison pattern and the car body parts, it cannot truly reflect the defects on the car body, so the authenticity of the test results remains to be seen. verify

In addition, most of the existing automatic detection devices are applied to the automatic detection of defects in the welding seams of in-service transmission steel pipe towers and bearing raceways, but there is no automatic detection device suitable for painted aluminum alloys at present.

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