联合载荷作用下三排滚子风电主轴承的摩擦力矩分析  

ANALYSIS OF FRICTION TORQUE OF WIND TURNINE MAIN BEARING WITH THREE-ROW ROLLERS UNDER COMBINED LOADS

作　　者：李金成 李云峰[1,2] 仲志丹 Li Jincheng;Li Yunfeng;Zhong Zhidan(School of Mechatronics Engineering,Henan University of Science and Technology,Luoyang 471003,China;Collaborative Innovation Center of Machinery Equipment Advanced Manufacturing of Henan Province,Luoyang 471003,China)

机构地区：[1]河南科技大学机电工程学院,洛阳471003 [2]机械装备先进制造河南省协同创新中心,洛阳471003

出　　处：《太阳能学报》2024年第10期597-606,共10页Acta Energiae Solaris Sinica

基　　金：河南省重大科技专项(221100220100)。

摘　　要：建立一种在联合载荷作用下三排圆柱滚子风电主轴承的摩擦力矩分析方法。首先,采用基于滚子切片处理的轴承载荷分布平衡方程组,分析计算在外部径向载荷、轴向载荷和倾覆力矩联合作用下的滚子切片载荷分布;然后,在轴承零件之间相对滑动运动分析的基础上,推导滚子-滚道滑动摩擦、滚子-滚道滚动摩擦、保持架-外圈滑动摩擦、密封圈-内圈滑动摩擦的计算公式,得到轴承总摩擦力矩的计算公式;最后,针对具体的风电主轴承,求解分析轴向游隙、滚子数量、滚子长径比、保持架质量和密封圈过盈量对摩擦力矩的影响。结果表明:三排圆柱滚子风电主轴承的摩擦力矩主要来自轴向滚子,合理的轴向游隙、滚子参数、保持架质量、密封圈过盈量对该轴承的减摩设计十分有利。A friction torque analysis method for wind turbine main bearing with the type of three-row cylindrical roller under combined loads is established.Firstly,by using an equilibrium equation system of bearing load distribution based on roller slicing processing,the load distribution of roller slices is analyzed and calculated under the combined action of external radial load,axial load,and tilting moment.Then,based on the analysis of relative sliding motion between bearing parts,the calculation formulas of roller-raceway sliding friction,roller-raceway rolling friction,cage-outer ring sliding friction and seal ring-inner ring sliding friction are deduced,and the calculation formula of total friction torque of bearing is obtained.Finally,for a specific wind turbine main bearing,the effects of axial clearance,roller number,roller length-diameter ratio,cage mass and seal ring interference on friction torque are solved and analyzed.The results show that the friction torque of the wind turbine main bearing with three-row cylindrical rollers mainly comes from the axial rollers.Reasonable axial clearance,roller parameters,cage mass and seal ring interference are very beneficial to the anti-friction design of this bearing.

关 键 词：风电机组 滚子轴承 内部摩擦 滚子切片 设计参数 

分 类 号：TH122[机械工程—机械设计及理论]