Novel high-speed wheel tread structure applicable to broad tracks in high and cold areas

Abstract

The invention discloses a novel high-speed wheel tread structure applicable to broad tracks in high and cold areas, and belongs to the technical field of rail vehicle wheel treads. The novel high-speed wheel tread structure has the advantages that parameters of various portions of treads are reasonably designed, accordingly, the treads are reasonable in initial range of equivalent taper, and the problems of vulnerability to primary snaking, low-frequency shaking of vehicles and deterioration of riding comfort due to excessively low equivalent taper can be solved by the aid of the novel high-speed wheel tread structure; the problems of vulnerability to instability of bogies, deterioration of operation safety and riding comfort of the vehicles and shortened spinning repair periods of existing wheels in later periods of spinning repair periods of the existing wheels due to excessively high equivalent taper can be solved by the aid of the novel high-speed wheel tread structure; the novel high-speed wheel tread structure is combined with actual research states of existing high-speed railway lines in Russia and are matched with reasonable suspension parameters, and accordingly the spinning repair periods and the service lives of wheels can be prolonged; operation measured data of high-speed railway tracks in Russia are analyzed, the novel high-speed wheel tread structure is low in abrasion and high in line adaptability, the two aspects of inhibiting snaking movement and prolonging spinning repair periods can be taken into account and can be balanced, and the like.

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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