• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2019, Vol. 55 ›› Issue (8): 128-135.doi: 10.3901/JME.2019.08.128

• 运载工程 • 上一篇    下一篇

机械差速器耦合轮对轨道车辆导向性能分析

寇杰, 张济民, 周和超, 王承萍   

  1. 同济大学铁道与城市轨道交通研究院 上海 201804
  • 收稿日期:2018-04-25 修回日期:2018-08-10 出版日期:2019-04-20 发布日期:2019-04-20
  • 通讯作者: 周和超(通信作者),男,1985年出生,博士,助理教授。主要研究方向为车辆系统动力学。E-mail:zhouhechao@tongji.edu.cn
  • 作者简介:寇杰,男,1994年出生,博士研究生。主要研究方向为车辆系统动力学。E-mail:838911823@qq.com;张济民,男,1969年出生,博士,教授。主要研究方向为车辆系统动力学及主动控制。E-mail:zjm397a@163.com
  • 基金资助:
    国家自然科学基金(61174214)和浦江人才计划(15PJD038)资助项目。

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

KOU Jie, ZHANG Jimin, ZHOU Hechao, WANG Chengping   

  1. Insitution of Rail Transit, Tongji University, Shanghai 201804
  • Received:2018-04-25 Revised:2018-08-10 Online:2019-04-20 Published:2019-04-20

摘要: 将对称式机械差速器应用于独立旋转轮对轨道车辆,作为左右车轮差速运行的被动控制装置。在动力学分析的基础上建立机械差速器耦合轮对轨道车辆模型和对比模型,包括刚性轮对车辆和独立旋转轮对轨道车辆模型。通过仿真计算,对比研究了机械差速器耦合轮对轨道车辆和另外两种车辆在曲线和直线上的导向性能,曲线通过安全性及轮轨磨耗性能。研究结果表明,在机械差速器的耦合作用下,独立旋转轮对恢复了纵向蠕滑力和直线上运行的复位对中能力,解决了独立旋转轮对车辆导向能力较差的问题。同时,和刚性轮对车辆相比,机械差速器耦合轮对轨道车辆在通过小半径曲线时,有更好的安全性、导向性能和轮轨磨耗性能。但由于纵向蠕滑力不足,在中等半径的曲线上,机械差速器耦合轮对轨道车辆的动力学性能比刚性轮对车辆稍差。总的来看,机械差速轨道车辆解决了独立旋转轮对车辆的导向及安全性问题,并且在极小半径的曲线上运行时有较好的动力学性能,这种特性有利于其在城市地面轨道交通中应用。

关键词: 安全性, 导向性能, 轨道车辆, 机械差速器, 轮轨磨耗性能

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

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