电磁差速耦合轮对导向机理  

Steering Mechanism of Electromagnetic Differential Coupling Wheelset

作　　者：李涛涛 刘建新[1] LI Taotao;LIU Jianxin(State Key Laboratory of Traction Power,Southwest Jiaotong University,Chengdu 610031 Sichuan,China)

机构地区：[1]西南交通大学牵引动力国家重点实验室,成都610031

出　　处：《铁道机车车辆》2022年第2期22-29,共8页Railway Locomotive & Car

基　　金：牵引动力国家重点实验室自主研究课题(2021TPL-T04)。

摘　　要：为解决独立旋转车轮在直线上不易自动对中和小半径曲线通过能力不足的导向问题,国内外学者提出了诸多耦合轮对技术方案。文中提出了一种新的电磁差速耦合轮对技术方案,该技术方案是在独立旋转车轮的基础上横向加装电磁耦合器构成耦合轮对,以实现独立旋转车轮差速控制。利用电磁耦合器的等效电路计算电磁耦合器传递的电磁耦合力矩,通过对电磁差速耦合轮对的力学模型分析得出电磁耦合力矩与轮轨纵向蠕滑力矩间的关系,阐述了电磁差速耦合轮对的导向机理。分析结果表明:电磁差速耦合轮对可以利用电磁耦合器的能量双向流动特性实现兼具直线对中能力和曲线通过能力,且电磁差速耦合轮对可以较好地解决独立旋转车轮在直线上不易自动对中和小半径曲线通过能力不足等问题。In order to solve the problem that the independent rotating wheels(IRWs)is not easy to automatically align on the straight line and the capacity of small radius curve passing is insufficient,many coupling wheelset technical schemes have been proposed by scholars at home and abroad.In this paper,a new scheme of coupling wheelset-electromagnetic differential coupling wheelsets(EDCW)is proposed.The electromagnetic coupler is installed horizontally on the IRWs to realize the differential control of the EDCW.The electromagnetic coupling torque transmitted by the electromagnetic coupler is calculated by using the equivalent circuit of the electromagnetic coupler.The relationship between electromagnetic coupling torque and wheel-rail longitudinal creep torque is obtained by analyzing the force of EDCW,and then,the guiding mechanism of EDCW is explained.The results show that the EDCW can use the two-way energy flow characteristics of the electromagnetic coupler to achieve both straight-line centering and curve passing ability,and the EDCW can solve the problem that the IRWs is not easy to automatically align on the straight line and the capacity of small radius curve passing is insufficient.

关 键 词：耦合轮对 电磁耦合器 等效电路 导向机理 导向性能 

分 类 号：U270.33[机械工程—车辆工程]