Study on Equivalent Conicity Modified Algorithm of In-service EMU Based on Measured Wheel Rail Profile Matching
Wheel-rail equivalent conicity is very important to ensure the running safety and comfort of EMU.In the process of wheel turning system optimization from planned preventive repair to on-condition maintenance,the application standard of key influencing factors and their executive strategy should be fully considered,such as the equivalent conicity.In view of the requirement that the application standard of equivalent conicity proposed by some EMU should be based on the measured wheel-rail profile,a modified method of equivalent conicity is proposed under its service condition in this paper.By constructing an effective service wheel and rail profile database and comparing with the equivalent conicity of the standard profile,we can obtain the probability distribution curve of the correction value corresponding to different profiles.On this basis,combined with the field requirements,the equivalent conicity results obtained by the existing detection methods can be corrected step by step.Thus,the wheel turning strategy could be gained combined with the relevant standards.This method provides a reliable method and data support for the application standard of wheel turning on-condition.
on-condition turningwheel-rail matchingequivalent conicitymodified methodapplication standard
NETL
NSTL
万方数据
维普
