风电机组主轴用双列调心滚子轴承结构的优化设计

摘要

针对双馈式风电机组用双列调心滚子轴承在使用过程中可能出现偏载的问题,对轴承结构进行改进.在保证轴承整体结构及尺寸不变的前提下,将轴承外圈滚道沿中心旋转2°,同时内圈滚道也做相应旋转.并将改进后结构的承载特性进行理论分析及有限元法验证,改进后的结构有效地缓解了偏载问题.%The structure of double row spherical roller bearings for doubly fed wind turbines is improved to solve the problem of eccentric load during application process.The outer ring raceway of the bearings rotates 2° along the center,while the inner ring raceway rotates correspondingly under the premise of same overall structure and dimension of the bearings.The load characteristics of improved structure are analyzed theoretically and verified by finite element method.The improved structure relieves effectively eccentric load.