动车组车顶电缆终端弹性连接方案研究

Research on elastic connection scheme of EMU roof cable terminal

目前主流的动车组车顶受电弓电缆终端均采用刚性连接方案,振动加速度大,易造成内部结构损伤。针对该问题,文章提出在动车组车顶电缆终端采用弹性连接的优化方案,并设计了3种不同结构方案的9种典型弹性减振结构。通过振动传递试验对比可知,弹性连接能明显改善电缆终端的振动特性,且刚度越小,电缆终端的振动特性越好。

At present,the rigid connection scheme is adopted for the pantograph cable terminal on the roof of mainstream EMUs,and the vibration acceleration is large,which is easy to cause internal structural damage.Aiming at this problem,this paper proposes an optimization scheme of using elastic connection in the roof cable terminal of EMU,and designs nine typical elastic vibration reduction structures with three different structural schemes.Through the comparison of vibration transfer tests,it can be seen that the elastic connection can significantly improve the vibration characteristic of cable terminal,and the smaller the stiffness,the better the vibration characteristic of cable terminal.