车轮多边形影响下高速列车齿轮传动装置的振动特性分析

Analysis of vibration characteristics for gear transmission system of high-speed train under the influence of wheel polygon load transfer

利用SIMPACK进行车轮多边形阶数变化下的动力学仿真,分别获得时速250 km时大、小齿轮的振动加速度,对其幅值频域分析,对比齿轮传动装置在不同阶数影响下的振动幅值、频谱分布。结果表明:车轮多边形的影响下齿轮传动装置的横向、纵向和垂向振动加强,垂向振动加速度变化幅值最大,振动频率范围增大很多;随着阶数的提高,小齿轮和大齿轮横向振动规律一致,小齿轮纵向振动大于大齿轮,小齿轮垂向振动小于大齿轮;齿轮传动装置横向、纵向振动受到的影响随阶数的提高而增大,但垂向振动受到的影响大小规律为:12阶>20阶>2阶。

Using SIMPACK for dynamic simulation under wheel polygonal order changes,and obtain the vibration accelerations of the gear and pinion at the speed of 250km/h respectively.Analyze their ampli-tude frequency domain,and compare the vibration amplitude and frequency spectrum distribution of the gear transmission system under different orders.The results show that under the influence of wheel poly-gons,the lateral,longitudinal,and vertical vibrations of the gear transmission system are strengthened,and the vertical vibration acceleration has the largest amplitude change,with a much larger vibration fre-quency range.As the order increases,the lateral vibration pattern of the pinion and the gear is consist-ent.The longitudinal vibration of the pinion is greater than that of the gear,and the vertical vibration of the pinion is smaller than that of the gear.The influence of lateral and longitudinal gitudinal vibrations on the gear transmission system increases with the increase of order,but the law of the influence on vertical vibrations is:12 orders>20 orders>2 orders.