Axle radial ultrasonic automatic flaw detecting device and control method

Abstract

The invention discloses an axle radial ultrasonic automatic flaw detecting device and a control method, and belongs to the technical field of ultrasonic flaw detection for axle parts. The flaw detecting device comprises a lathe bed, an axle rotary supporting unit, a portal frame unit, at least one flaw detecting unit, an ultrasonic generating receiver, a motor driver unit, a control unit and an interactive operation unit. The adoption of the device and the control method comprehensively realizes the program controlled axle radial ultrasonic automatic flaw detection device for different axle types. The device and the control method improve the operating efficiency through the simultaneous operation of a plurality of groups of flaw detecting units, automatically identify flaw in real time in an on-line way through the control unit, and record detected flaw. Compared with the prior art, the device and the control method have the advantages that the flaw defection efficiency is high, the flaw defection result has repeatability, the labor intensity of workers can be reduced, and axle ultrasonic automatic flaw detection with high automation, high adaptability, low control difficulty and high reliability is realized. The device is applicable to the detection of internal flaws of solid axle parts.

Description

technical field [0001] The invention belongs to the technical field of ultrasonic automatic flaw detection of axle parts, in particular to the design of an axle radial ultrasonic automatic flaw detection device and a control method. Background technique [0002] With the continuous increase in the speed and load of railway transport vehicles, higher requirements are placed on the quality of the running parts of the vehicles. The axle is one of the important components to ensure the stable operation of rail vehicles. During the operation of rail vehicles, the bearings are subjected to frequent alternating loads. Under different operating conditions, the loads on the axles are also different. Once the axle is damaged, And expand and develop, in severe cases, will lead to derailment accidents. At present, most of the locomotive manufacturers and maintenance units in my country use manual flaw detection to detect the damage inside the axle. The flaw detection results are direct...

AI Technical Summary

Problems solved by technology

The axle is one of the important components to ensure the stable operation of rail vehicles. During the operation of rail vehicles, the bearings are subjected to frequent alternating loads. Under different operating conditions, the loads on the axles are also different. Once the axle is damaged, And expand and develop, in serious cases, it will lead to derailment accident

At present, most of the locomotive manufacturers and maintenance units in my country use manual flaw detection to detect the damage inside the axle. The flaw detection results are directly related to the technical level and operation method of the operator. If the manual scanning speed is too fast, it is easy to miss the detection. If the scanning speed is too slow, the efficiency will be low, and the poor coupling between the probe and the workpiece will easily lead to missed detection.

Therefore, the manual ultrasonic flaw detection method not only has low detection efficiency and high labor intensity, but also it is difficult to guarantee the reliability and accuracy of flaw detection, which has a certain impact on driving safety and has great potential safety hazards.

[0003] In recent years, some automated axle ultrasonic flaw detection equipment has also appeared. For example, the publication number of "Automatic Ultrasonic Flaw Detection Device for Rail Transit Axle": CN101614703A uses the water film method and water immersion method for flaw detection, and the axle needs to be placed in a water tank. The probe is not in contact with the surface of the axle. This device can realize the automatic loading and unloading process of the axle, but the structure of the device is relatively complicated.

The literature "BLC-8Z type railway locomotive vehicle axle ultrasonic automatic flaw detection device, Sun Zhenguo et al., Non-destructive testing, 2008, 3 (25)", adopts the probe arm mechanism in the form of a cylinder, and the probe stroke is fixed. For axles of different sizes, manual inspection is required. Adjusting the stroke of the probe arm is inconvenient to operate, and its control method adopts a sequential execution method, and the movement methods between different flaw detection units are not independent of each other

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