Online dynamic detection device of all-periphery contour dimension of locomotive wheel pair

Abstract

The invention discloses an online dynamic detection device of an all-periphery contour dimension of locomotive wheel pair, which comprises a proximity sensor, a leaving sensor, pickup units, a train speed detection unit and a data processing control device, and also comprises a time reference unit, wherein the time reference unit comprises a plurality of time reference sensors, the time reference sensors are arranged outside a rail along the length direction of the rail, the time reference sensors are connected with the data processing control device; and the pickup unit comprises a surface array laser generator arranged near the rail and a surface array CCD (Charge Coupled Device) image sensor. The surface array laser generator and the surface array CCD image sensor form the pickup units to ensure that the acquired image is more accurate; the time reference unit is arranged between the front pickup unit and the rear pickup unit, the image acquisition time can be accurately controlled, the all-periphery contour dimension key parameters of the measured wheel are obtained by analyzing an image sequence, and more detailed and accurate measurement is provided for the conditions of wheel deformation, abrasion, loss and defects.

Description

[technical field] [0001] The invention relates to an automatic detection device for a wheel set of a locomotive vehicle, in particular to an online dynamic detection device for the overall circumference dimension of a wheel set of a locomotive. [Background technique] [0002] Wheels are an important factor affecting the safe running of trains. As the speed of the train continues to increase, the requirements for the geometrical dimensions and internal structure of the wheel are also getting higher and higher. How to regularly inspect the wheels and find various abnormalities such as deformation, wear, scratches and internal defects in time is very necessary to ensure the safe operation of the train. [0003] At present, the domestic non-contact measurement system for the detection of wheel dimensions is mainly built on the basis of visual detection technology. As its front-end image acquisition device, CCD cameras working in different bands become the first choice. The CC...

AI Technical Summary

Problems solved by technology

Its shortcoming is that although a complete wheel outline can be obtained, what is obtained is only information on one or two positions on the entire wheel circumference, which is far from reaching the purpose of detecting the entire wheel circumference dimensions, which causes the wheel set Non-wear defects (such as deformation, etc.) may not be detected, thus affecting the accuracy and reliability of detection

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