高速米轨动车组转向架牵引装置模式的研究

Research on the mode of bogie traction device of high-speed meter-gauge EMU

为保证米轨列车高速运行稳定性,转向架牵引装置对车辆的转动、轴载传递和附着利用率等指标起着至关重要的作用。文章通过对不同形式牵引装置的适应性选型分析,确定了在高速米轨动车组转向架上牵引装置的结构形式为“Z”型双拉杆牵引装置。同时,从车辆运行性能、结构强度和车辆动力学性能三方面进行了综合验证,结果表明基于“Z”型双拉杆牵引形式,车辆的轴重转移系数为0.313;黏着系数为0.156。通过强度分析计算可知,中心销、牵引梁和牵引拉杆的最大von Mises应力均满足标准要求。依据EN 13749标准制定的疲劳载荷工况,满足Goodman-Smith疲劳极限图。中心销的一阶模态为836 Hz;牵引梁的一阶模态为564 Hz;牵引拉杆的一阶模态为636 Hz。装用该牵引装置动车组车辆的稳定性、平稳性、舒适度和曲线通过安全性均满足标准要求。

In order to ensure the stability of the high-speed operation of the meter-gauge train,the bogie traction device plays a vital role in the rotation,axle load transfer and adhesion utilization rate of the vehicle.Through the analysis of the adaptability of different forms of traction devices,the structural form of the traction device on the bogie of high-speed meter-gauge EMU is determined to be a“Z”type double tie rod traction device.At the same time,the comprehensive verification of the vehicle operation performance,structural strength and vehicle dynamic performance is carried out,and the results show that based on the“Z”type double tie rod traction form,the axle load transfer coefficient of the vehicle is 0.313,and the adhesion coefficient is 0.156.The strength analysis calculations show that the maximum von Mises stresses of the center pin,traction beam and traction tie rod meet the requirements of the standard.Fatigue load cases according to EN 13749 standards can also meet Goodman-Smith fatigue limit diagrams.The first-order mode of the center pin is 836 Hz.The first-order mode of the traction beam is 564 Hz.The first-order mode of the traction rod is 636 Hz.The stability,comfort and curve passing safety of the EMU vehicle equipped with the traction device all meet the standard requirements.