弹性胶泥缓冲器关键参数对快捷列车纵向冲动的影响

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振动与冲击 ›› 2022, Vol. 41 ›› Issue (5) : 99-104.

论文

赵旭宝1，魏伟2，董靓瑜1，李静1

作者信息 +

Effects of key parameters of elastic polymer draft gear on longitudinal impulse of rapid speed wagon

ZHAO Xubao1, WEI Wei2, DONG Liangyu1, LI Jing1

Author information +

文章历史 +

摘要

本文根据弹性胶泥缓冲器的结构原理，构建了基于速度型的弹性胶泥缓冲器模型，利用空气制动和纵向动力学联合仿真系统，分析了弹性胶泥缓冲器关键参数对快捷列车纵向冲动的影响。仿真结果表明：缓冲器的初压力和弹性胶泥的流动指数对列车的纵向冲动影响较大，而与机构相关的综合等效刚度对列车的纵向冲动影响较小。随着缓冲器初压力的不断增大，车钩力和加速度最大值均逐渐增大；初压力由20 kN 增大到100 kN时，列车车钩力最大值增长了14.4%；加速度最大值增长了32.9%；胶泥流动指数在0.1~0.5范围内变化时，车钩力和加速度最大值变化较小；胶泥指数在0.5~0.9范围内变化时，车钩力和加速度最大值均随胶泥流动指数的增加呈指数级增长。胶泥流动指数在0.5~0.9范围内变化时，车钩力最大值增大了51.7%；加速度最大值增幅为59.5%。这为新型弹性胶泥缓冲器结构参数的设计提供了理论指导。

Abstract

According to the structural principle of the elastic polymer draft gear, a dynamic model of elastic polymer draft gear based on the speed-dependent characteristics of the elastic polymer was established, and the influences of the key parameters of the elastic polymer draft gear on the longitudinal impulse of the rapid speed wagon is analyzed by using the train air brake and longitudinal dynamics integrated simulation system.The simulation results show that the parameters of the mounting preload and the flow index of elastic polymer have a greater impact on the longitudinal impulse of the rapid speed wagon, while the comprehensive equivalent stiffness related to the mechanism has a smaller effect on it.With the continuous increase of the mounting preload of the draft gear, the maximum value of the coupler force and acceleration both gradually increases; When the mounting preload changes from 20 kN to 100 kN, the maximum train coupler force increases by 14.4%,and the maximum acceleration increases by 32.9%.When the flow index of elastic polymer changes within the range of 0.1 to 0.5, the maximum coupler force and acceleration will change slightly, but when the flow index of elastic polymer changes within the range of 0.5 to 0.9, both of them increase exponentially with the increase of the flow index of elastic polymer,the maximum coupler force increases by 51.7%,and the maximum acceleration increases by 59.5%. This work provides theoretical guidance for the design of the structural parameters of the new elastic polymer draft gear.

导出引用

赵旭宝1，魏伟2，董靓瑜1，李静1. 弹性胶泥缓冲器关键参数对快捷列车纵向冲动的影响[J]. 振动与冲击, 2022, 41(5): 99-104

ZHAO Xubao1, WEI Wei2, DONG Liangyu1, LI Jing1. Effects of key parameters of elastic polymer draft gear on longitudinal impulse of rapid speed wagon[J]. Journal of Vibration and Shock, 2022, 41(5): 99-104

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