摘要
以某兆瓦风电机组齿轮箱一级行星轮前轴承(双列圆柱滚子轴承)为研究对象,基于赫兹接触理论、厚壁圆筒理论和GB/Z 36517—2018建立考虑配合过盈量的轴承疲劳寿命数值仿真分析模型,并分析轴承配合零件尺寸公差、形位公差、表面粗糙度对轴承疲劳寿命的影响,结果表明:保持轴承初始配合不变,随行星轮轴与轴承内圈的配合公差由g6向r6转变,轴承内圈由过渡配合变为过盈配合,轴承寿命先增加后减小,配合公差为p6时轴承寿命最大;随行星轮内圈与轴承外圈的配合公差由H6向S6转变,轴承外圈由间隙配合变为过渡配合、过盈配合,轴承寿命由无变化变为逐渐增加;行星轮轴与内圈的径向全跳动公差变化导致配合过盈量增加时,轴承寿命增加,反之则轴承寿命降低;行星轮轴与内圈的表面粗糙度值增加会导致轴承寿命降低。
Taking first stage planetary gear front bearings(double row cylindrical roller bearings)for a megawatt-class wind turbine gearbox as research objects,based on Hertz contact theory,thick-walled cylinder theory and GB/Z 36517—2018,a numerical simulation analysis model for fatigue life of the bearings is established with consideration of fit interference.The effects of dimensional tolerance,geometric tolerance and surface roughness of fit parts on fatigue life of the bearings are analyzed.The results show that:the initial fit of the bearings remains unchanged,as the fit tolerance of planetary gear shafts and bearing inner rings changes from g6 to r6,the bearing inner rings change from transitional fit to interference fit,the life of the bearings increases first and then decreases,and the life of the bearings reaches the maximum when the fit tolerance is p6;as the fit tolerance of planetary gear inner rings and bearing outer rings changes from H6 to S6,the bearing outer rings change from clearance fit to transitional fit and interference fit,the life of the bearings first remains unchanged and then gradually increases;as the radial full runout tolerance of planetary gear shafts and inner rings changes,the fit interference increases and the life of the bearings increases,on the contrary,the life of the bearings decreases;an increase in surface roughness values of planetary gear shafts and inner ring leads to a decrease in life of the bearings.
作者
杨晋
王建梅
宁文刚
任禄
YANG Jin;WANG Jianmei;NING Wengang;REN Lu(Engineering Research Center of Heavy Machinery Ministry of Education,Taiyuan University of Science and Technology,Taiyuan 030024,China;Technology Center of Taiyuan Heavy Industry Co.,Ltd.,Taiyuan 030024,China)
出处
《轴承》
北大核心
2023年第6期64-71,共8页
Bearing
基金
国家自然科学基金资助项目(51875382)
山西省回国留学人员科研资助项目(2020125)
风力发电关键零部件产教融合研究生联合培养基地资助项目(JD2022021)
2022年度山西省研究生教育创新项目(2022Y708)。
关键词
滚动轴承
风电轴承
双列圆柱滚子轴承
风力发电机组
疲劳寿命
尺寸公差
形位公差
表面粗糙度
rolling bearing
wind turbine bearing
double row cylindrical roller bearing
wind turbine
fatigue life
dimensional tolerance
shape tolerance
surface roughness
