多平行轴斜齿轮转子系统耦合振动分析与计算

摘要

The rapid development of the wind power industry makes a higher request for the stability and efficiency of a wind turbine gearbox operation.In order to reduce faults in the gear box caused by the vibration and improve the working reliability of the unit,it is necessary to explore the effective ways to reduce the gearbox faults.The article,taking the dynamic of gear-rotor system as the theoretical basis,aiming at changing the natural frequency of the geared rotor system,calculates the modal value of the system by adopting the finite element method,simulates the dynamic vibration of the geared rotor system under both coupling and non-coupling condition.It also studies the influence exerted by the change in the geometric parameters of system components on the natural frequency of the system and puts forward the effective ways to change the natural frequency of the system to avoid resonance,so as to verify the feasibility of the method through the two-stage geared rotor system of two wind turbines.%风电产业的迅速发展对风力发电机组齿轮箱运行的稳定性和高效性提出了很高的要求，为了降低由于振动导致的齿轮箱故障，提高机组工作的可靠性，需要探求降低齿轮箱故障的有效途径。文章以齿轮转子动力学为理论依据，以改变齿轮转子系统固有频率为目的，结合风力发电机组高速传动系统的实例，运用有限元方法，模拟齿轮转子系统在耦合与非耦合情况下的动态振动过程，计算系统的各阶模态值；研究改变系统元件的几何参数对系统固有频率的影响；提出改变系统固有频率避免共振的有效途径，并以风力发电机组的两级平行轴齿轮转子系统来验证方法的可行性。