A rotating spindle crack detection device based on elastic wave detection

Abstract

The invention relates to the field of non-destructive detection, and specifically discloses a rotation main shaft crack detection apparatus based on elastic wave detection. The rotation main shaft crack detection apparatus comprises an installation plate, which is detachably connected to a driving module, an elastic wave excitation module and an elastic wave receiving module, and comprises a bottom plate and rotation shaft fixation frames, wherein the elastic wave excitation module comprises a wave excitation device, a wave excitation rod and a wave excitation head, one end of the wave excitation rod is connected to the wave excitation device, the other end of the wave excitation rod is connected to the wave excitation head, the wave excitation head is provided with a shaft sleeve hole, ashaft sleeve is movably and rotatably connected in the shaft sleeve hole, and a shaft hole is arranged on the shaft sleeve. According to the present invention, the rotation main shaft crack detectionapparatus can achieve the accurate and continuous wide-band elastic wave excitation in the case of the high-speed rotation of the rotation shaft so as to establish the foundation for the accurate detection of the rotation shaft crack.

Description

technical field [0001] The invention relates to the field of non-destructive testing, in particular to a rotating spindle crack detection device based on elastic wave detection. Background technique [0002] In engineering practice, the rotating shaft is a common moving part used to transmit energy, especially in the fields of power generation, automobiles, aerospace, modern manufacturing, etc., and the research on non-uniform shafts of rotation has never stopped. The detection of defects such as cracks inside the rotating shaft is also an important research direction, especially for some equipment that is not easy to stop for inspection, it is necessary to perform non-destructive testing on the internal defects of the rotating shaft in the rotating state. The existing detection method measures the vibration parameters of the rotating shaft when it rotates at high speed, and analyzes and judges whether there is a crack defect inside the rotating shaft. This detection method...

AI Technical Summary

Problems solved by technology

Due to the high-speed rotation of the rotating shaft, the traditional elastic wave excitation device cannot be used directly

At present, the commonly used method is to manually tap the transmission shaft to excite elastic waves, but this method not only depends on the subjective will and professional skill level of the tapper, but also has great uncertainty and elasticity. The amplitude and frequency of the wave cannot be obtained accurately, which affects the accuracy of the detection results; and hitting the rotating shaft under high-speed rotation may also cause accidents, causing damage to equipment and operators

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