基于仿真计算的磁浮列车接触轨膨胀接头性能研究

Performance Study of Expansion Joints of Maglev Train Contact Rail Based on Simulation Calculation

在受电靴、接触轨耦合系统中,膨胀接头始终是一个薄弱环节。受电靴通过膨胀接头时产生的噪声和振动较大。为了提升受电靴平稳通过能力,近年来开发出了无缝膨胀接头。在调研分析了侧部接触轨的主要结构及技术参数基础上,分别建立不同膨胀接头方案的接触轨与受电靴动力学仿真模型,研究运行速度、膨胀接头类型和跨距对靴轨接触力和振动加速度的影响规律。研究表明,两种膨胀接头方案均可满足175 km/h的速度要求;无缝膨胀接头在低速段有一定优势,高速段与有缝膨胀接头性能相当。

In the collector shoe/conductor rail coupling system,the expansion joint is always a weak link.When the collector shoe passes through the expansion joint,the noise and vibration are relatively large.In order to improve the smooth passing ability of the collector shoe,seamless expansion joints have been developed in recent years.After investigating and analyzing the main structure and technical parameters of the current side conductor rails,we establish dynamic simulation models of conductor rails and collector shoes for different expansion joint schemes,and study the operating speed,expansion joint types and spans on the collector shoe/conductor rail contact force and the influence law of vibration acceleration.The research shows that both expansion joint solutions can meet the speed requirements of 175 km/h;the seamless expansion joint has certain advantages in the low-speed section,and the high-speed section has the same performance as the jointed expansion joint.