驱动及负载激励下高速人字齿轮的动态特性分析

Dynamic Characteristics Analysis of High-speed Herringbone Gears under Driving and Loading Excitation

高速齿轮传动装置中通常采用人字齿轮传动,其高速工况下的动态特性对设备的可靠运行有重要影响。建立了人字齿轮传动的模型,在考虑驱动和负载激励的条件下,分析了人字齿轮增速传动的动态特性,进行了动力学仿真,并对产品进行了实验。结果表明,在负载恒定时,齿轮角速度越大,齿轮所受接触力越大,碰撞频率越高。随着输入转速逐步提高至500、1000、1488 r/min时,其速度波动幅值之差分别为2.27、4.76、9.37 rad/s,后两种工况下最大接触力分别是500 r/min工况下的1.87倍和2.44倍,角速度波动的次数分别增大到500 r/min工况下的1.94倍和2.94倍。负载增大,从动齿轮角速度波动幅度减小,接触力增大。研究为高速齿轮传动装置设计提供了参考。

The herringbone gear is usually used in the high-speed gear transmission device,and its dynamic particularity under high speed conditions has an important influence on the reliable operation of the equipment.Therefore,the model of the herringbone gear transmission is established,the dynamic characteristics of various herringbone gear transmissions are analyzed under the conditions of driving and load excitation,and the dynamic simulation is carried out,and the product is tested.The results show that when the load is constant,the greater the angular speed of the gear is,the greater the contact force on the gear and the higher the collision frequency will be.When the input speed increases from 500 r/min to 1000 r/min and 1488 r/min,the difference of velocity fluctuation amplitude respectively is 2.27 rad/s,4.76 rad/s and 9.37 rad/s,and the maximum contact force is 1.87 times and 2.44 times those under 500 r/min,respectively.The number of angular velocity fluctuation increases respectively to 1.94 times and 2.94 times in the case of 500 r/min.When the load increases,the angular velocity fluctuation of the driven gear decreases and the contact force increases.This study provides reference for the design of this kind of high-speed gear transmission device.