Analysis of Guiding of the Mechanical Differential Coupling Wheels for Railway Vehicle

doi:10.3901/JME.2019.08.128

Abstract

Abstract: In this investigation, the mechanical differential is applied to couple the independently rotating wheels (IRW). Based on dynamics and kinematics analysis of the vehicle system and differential, the differential-coupling wheels vehicle (DWV) model and the comparative models, including rigid-wheelset vehicle (RWV) model and IRW vehicle model, are developed. The guiding performance in curve and line, safety in the curve and wheel-rail wear performance of the vehicles are studied and compared by simulation. It can be concluded that, in the coupling effect of differential on wheels, the DWV regains longitudinal creep forces and the resetting capability on straight track, which solve the guiding problem of independently rotating wheels vehicles. Compared with RWV, DWV has superior dynamics, including safety, guiding performance and wear performance, on negotiating tiny-radius curves. However, with no sufficient longitudinal creep forces, the dynamics of DWV are not comparable to those of RWV on ordinary-radius curve. In general, the DWV eliminate the guiding and safety problem of IRW vehicle, and the overall dynamics of DWV are better than RWV on the tiny-radius curves, which adapts the DWV to the urban tracks.

Key words: guiding performance, mechanical differential, railway vehicle, safety, wheel-rail wear performance

CLC Number:

U273

KOU Jie, ZHANG Jimin, ZHOU Hechao, WANG Chengping. Analysis of Guiding of the Mechanical Differential Coupling Wheels for Railway Vehicle[J]. Journal of Mechanical Engineering, 2019, 55(8): 128-135.

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