Calculation method for maximum swing angle in vertical direction of rail vehicle coupler

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Journal of Vibration and Shock ›› 2022, Vol. 41 ›› Issue (15) : 153-160.

YANG Chen1, CHI Maoru1, WU Xingwen2, CAI Wubin1, LIU Kaicheng1

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Abstract

In view of the shortcomings of the traditional calculation method of vertical maximum swing angle, a new method based on the vehicle dynamics model with faults was proposed. And the maximum vertical swing angle of coupler under suspension failure of a metro coupled vehicle was analyzed, and the influences of key parameters on the maximum vertical swing angle of coupler were studied. The results show that compared with the traditional method, the new method can fully consider the factors such as the carbody flexibility and the suspension deformation under fault impact, and the maximum swing angle calculated by new method are 1.2% and 10.2% larger respectively than pure theoretical calculation results under the conditions of single steel spring fracture and single air spring losing gas. In addition, the coupler swing angle increases by about 0.086 ° when the steel spring descent increases by 5mm, the coupler swing angle increases by about 0.173 ° when the air spring descent increases by 5mm; the coupler swing angle increases by about 0.05 ° when the vertical deformation of carbody increases by 1 mm.
Key words: coupler vertical maximum swing angle; railway vehicles; dynamics; suspension failure

Key words

coupler vertical maximum swing angle / railway vehicles / dynamics / suspension failure

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YANG Chen1, CHI Maoru1, WU Xingwen2, CAI Wubin1, LIU Kaicheng1. Calculation method for maximum swing angle in vertical direction of rail vehicle coupler[J]. Journal of Vibration and Shock, 2022, 41(15): 153-160

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