Application method of turning bed measurement data based on train wheelset online monitoring system

Abstract

The invention discloses a turning lathe measurement data application method based on train wheel set online monitoring system. According to the turning lathe measurement data application method, the diameter and flange height of a sample wheel set are measured through a non-pulling wheel turning lathe in the first step; the low-point chord length and the high-point chord length of the sample wheel set are measured through the train wheel set online monitoring system in the second step; and in the third step and the fourth step, correlation analysis is conducted on the data obtained in the first step and the second step. By the adoption of the turning lathe measurement data application method based on train wheel set online monitoring system, measurement errors of the non-pulling wheel turning lathe are creatively made to be equivalent to characteristic quantity errors of the chord distance of the online monitoring system for the first time through the correlation analysis of the data of the train wheel set online system and the measurement data of the non-pulling wheel turning lathe, and thus calibration of the non-pulling wheel turning lathe is achieved.

Description

technical field [0001] The present invention relates to the application field of train wheelset operation safety, on-line monitoring of wheelsets and correlation analysis data of turning bed, which is used for evaluating the uncertainty of the size of the wheel set measured by the wheel turning bed and calibrating the measurement error of the turning bed, that is, : Calibration method of turning bed based on train wheelset online monitoring system. Background technique [0002] Due to the development needs of urban rail transit, non-falling wheel lathes have increasingly played an important role in rail transit operation and maintenance services. The non-falling wheel turning bed is set in the depot, which can repair and process a single wheel set on the train bogie or an independent single wheel set, and can also turn the wheels without dismantling the vehicle and disassembling the bogie. It can be used for turning and repairing, and it also has the function of measuring t...

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Problems solved by technology

[0004] 1. The calibration cycle of using standard wheelsets to calibrate turning lathes is generally set at half a year. If there is a measurement deviation within the calibration cycle, it will directly affect the safe use of train wheelsets and cause over- or under-processing of wheelsets. The most unfavorable situation will affect the above-mentioned thousand wheelsets

[0005] 2. The calibration method of the standard wheel set is different from the actual mode of "non-falling wheel" processing of the non-falling wheel turning machine. Since the non-falling wheel turning machine is affected by the pressure of the wheel set, bogie, car body, etc., the measurement conditions are different from the calibration conditions. Similarly, it may lead to inaccurate measurement of the wheel set size, and this hidden error factor is very easy to be ignored

[0006] 3. As a supplement to the automatic measurement of the lathe bed, it is manual measurement, that is, to use special measurement tools for measurement. Manual measurement is time-consuming and laborious, and it is difficult to guarantee the accuracy and frequency of measurement

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