Measuring method of Radial Run Out of High Speed Railway Wheelset

Aiming at the automatic measure technical problem about wheel radial runout, a non-contact method of measurement which uses self-create journal positioning mode is proposed to greatly improves the coaxiality of the axis of rotation, thus the v-shaped block and high-precision bearing are constructed as the positioning datum, in shaft end of wheel set a mechanism for wheel set rotating measurement is driven by using motor to implement accurate positioning measurement of radial runout of rolling round of wheel tread. The collected data are processed and analyzed by using method of median filtering to finally obtain the radial runout value of wheelset. The results show that: accuracy of measurement of the method ≤±0.03mm to fully guarantee the requirements which radial runout of wheelset tread ≤±0.1mm meeting actual requirements of radial runout measurement of high speed railway wheelset.