液压防折弯系统对有轨电车通过S型曲线安全性影响的分析  

Safety analysis of hydraulic anti-kink system on S curve passing of tram

作　　者：樊庆宇 池茂儒[1] 罗赟[1] 李奕潇 王欢声 FAN Qingyu;CHI Maoru;LUO Yun;LI Yixiao;WANG Huansheng(State Key Laboratory of Traction Power,Southwest Jiaotong University,Chengdu,Sichuan 610031,China)

机构地区：[1]西南交通大学牵引动力国家重点实验室,四川成都610031

出　　处：《机车电传动》2022年第1期71-78,共8页Electric Drive for Locomotives

基　　金：国家重点研发计划项目(2018YFB1201701)。

摘　　要：针对单车型有轨电车曲线通过时产生的折弯现象,基于液压防折弯系统的原理,建立了四模块编组单车型传统轮对的有轨电车模型和防折弯系统的动力学简化模型,对比分析了有轨电车在防折弯系统作用下通过“C”型圆曲线和不同夹直线长度的“S”型曲线的受力情况以及动力学性能。结果表明:在限界方面,防折弯系统在小半径曲线上可以使得同一模块前后车体与转向架的摇头角差趋于一致,有效减小车辆的最大摇头角,防止车辆在曲线上发生折弯;在动力学方面,通过“C”型圆曲线和夹直线较长的“S”型曲线时,防折弯系统有利于后车顺利进入曲线,同一模块前车导向轮对的轮轨横向力和脱轨系数略有增加,后车导向轮对的轮轨横向力和脱轨系数降低,同时在通过夹直线较短的“S”型曲线时,防折弯系统不利于曲线通过,同一模块前后车导向轮对的轮轨横向力和脱轨系数均增加;对于夹直线长度小于转向架定距的“S”型曲线,不建议有轨电车安装防折弯系统,而对于夹直线长度大于转向架定距的“S”型曲线,有轨电车可以考虑安装防折弯系统。Based on the principle of hydraulic anti-kink system,a four-module single vehicle type tram model with traditional wheelsets and a simplified dynamic model of the anti-kink system was established for the bending phenomenon caused by the singletype tram passing through the curve.The force condition and the dynamic performance of tram passing through C-shaped circular curve and S-shaped curves with different intermediate straight line lengths were compared and analyzed under the action of anti-kink system.The results show that:1)In terms of limits,the anti-kink system can make the head-shaking angle difference between the front and following car body and the bogie of the same module tend to be consistent on a small radius curve,effectively reducing the maximum headshaking angle of the vehicle,and preventing the vehicle from bending on the curve.2)In terms of dynamics,when passing the C-shaped circular curve and the S-shaped curve with a long intermediate straight line,the installation of the anti-kink system is conducive to the smooth entry of the rear vehicle into the curve,the wheel-rail lateral force and the derailment coefficient of the front guide wheel of the same module increase slightly,while the wheel-rail lateral force and the derailment coefficient of the following guide wheel guide decrease.When passing the S-shaped curve with a short intermediate straight line,the installation of the anti-kink system is not conducive to the curve passing,in the same module,the wheel-rail lateral force and the derailment coefficient of the front and the following guide wheel both increase.3)It is not recommended to install hydraulic anti-kink system on the S-shaped curve when the length of the intermediate straight line is less than the fixed distance of the bogie;On the contrary,the tram may consider installing hydraulic anti-kink system.

关 键 词：有轨电车 液压防折弯系统 S型曲线通过性能 夹直线 仿真 

分 类 号：U482.1[交通运输工程—载运工具运用工程]