A high-speed wheel tread structure suitable for wide rails in alpine regions

Abstract

A high-speed wheel tread structure suitable for wide rails in alpine regions belongs to the technical field of rail vehicle wheel treads. Through the reasonable design of the parameters of each part of the tread, the tread has a reasonable initial range of equivalent taper, avoiding the problem of excessively small equivalent taper. A snaking movement will cause the vehicle to vibrate at a low frequency and reduce ride comfort; at the same time, it can also avoid the problem that if it is too large, it will easily cause bogie instability in the later stage of the wheel repair cycle, reduce the vehicle's operating safety and ride comfort, and shorten the wheel repair cycle combined with the actual research status of Russia's existing high-speed rail lines, and matching reasonable suspension parameters, the wheel turning repair cycle was extended and the service life of the wheels was increased. Through the analysis of the actual measurement data of the track operation of the Russian high-speed railway, the invention has the characteristics of low wear and strong line adaptability, and achieves both consideration and balance in suppressing snaking motion and prolonging the turnaround period.

Description

technical field [0001] The invention relates to a wheel tread of a rail vehicle, in particular to a high-speed wheel tread structure suitable for wide rails in alpine regions. Background technique [0002] As the core technology of high-speed EMUs, wheel tread structure design is generally based on the adaptability of the tread structure to the rail, tread wear, vehicle lateral stability, vehicle body stability, wheel-rail contact stress, contact angle difference, vehicle suspension parameter adaptability, etc. Comprehensive consideration, in order to screen out the tread structure parameters of the wheel with the best adaptability to the equivalent taper of the tread, so as to achieve the best results in suppressing snaking motion, improving the stability of high-speed trains, reducing wheel rim wear, prolonging the wheel cycle, and increasing the service life of the wheel. Excellent consideration and balance. [0003] At present, the wheel tread structure used in Russia's...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the technical problem that the wheel tread of the existing domestic 300km / h speed grade cannot match the rail profile, gauge, and rail bottom slope adopted in Russia, the purpose of this invention is to provide a new type of high-speed rail suitable for wide rails in alpine regions. The wheel tread structure can achieve a balance between restraining snaking motion and prolonging the turnaround period

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