大型变桨轴承载荷分布的有限元分析  

Finite Element Analysis of Load Distribution of Large Pitch Bearing

作　　者：武家欣 马伟[1] 刘义[1] 李济顺[1] 

机构地区：[1]河南科技大学河南省机械设计及传动系统重点实验室,河南洛阳471003

出　　处：《机械传动》2014年第8期71-73,103,共4页Journal of Mechanical Transmission

基　　金：国家科技支撑计划(2011BAF09B02)

摘　　要：在实际工程应用中,大型风电变桨轴承的结构多为双排四点接触球轴承,其受力巨大,工况恶劣,掌握其载荷分布规律对于提高变桨轴承的性能和可靠性有重要意义。利用ANSYS Workbench软件,对变桨轴承进行了三维建模,对其进行了静态接触力学分析,研究了变桨轴承的载荷分布规律,以及螺栓预紧力、模拟工况条件对变桨轴承载荷分布的影响。结果表明,变桨轴承中钢球与沟道间的最大接触载荷随螺栓预紧力的增大先减小后增大,工况条件下,变桨轴承会发生扭转变形,对载荷分布有较明显的影响。In the practical engineering application,the pitch bearings in large wind turbines are often double-row four-point contact ball bearings.The pitch bearings work in harsh conditions and stand large load.Grasping the load distribution is of great importance to the improvement of performance and reliability of pitch bearings.The 3Dmodels of pitch bearings are first developed with ANSYS Workbench software,and then the static contact mechanics analysis is carried out,the load distribution and bolts preloaded in different working conditions are studied.The results show that the maximum pitch bearing contact load between the ball and the channel with increasing bolt preload decreases first and then increases,under the working conditions,torsional deformation occurs pitch bearings have a more significant impact on load distribution.

关 键 词：变桨轴承 有限元分析 接触应力 载荷分布 

分 类 号：TM315[电气工程—电机]