摘要
以某MW级风电机组双排四点接触球转盘轴承为例,采用ANSYS有限元分析软件建立叶片-轴承-轮毂的整体有限元模型,将钢球与沟道的非线性接触等效为弹簧单元,进行轴承结构强度和接触强度校核计算,该分析方法可减少大规模的接触计算,提高变桨轴承计算效率。对轴承宽度、加强盘厚度、轴承外径、沟道位置、预紧力等影响参数进行了研究,结果表明:增大轴承宽度、外径以及适当增加预紧力,有利于提高变桨轴承的静承载性能及疲劳性能;适当增大加强盘厚度,可有效提高变桨轴承沟道边缘的承载能力;沟道位置下移,可有效改善变桨轴承套圈的疲劳强度。
Taking double row four point contact ball bearings for a megawatt-class wind turbine as examples,the integral finite element model of blade-bearing-hub is established by using ANSYS finite element analysis software.The nonlinear contact between steel ball and raceway is equivalent to a spring element,the structural strength and contact strength of the bearings are checked and calculated.The results show that the analysis method reduces the large-scale contact calculation and improves the calculation efficiency of wind turbine pitch bearings.The influencing parameters are studied,such as bearing width,reinforced disc thickness,bearing outer diameter,raceway position and preload.The results show that:increasing the bearing width and outer diameter as well as appropriately increasing the preload are beneficial to improve the static load performance and fatigue performance of the bearings;appropriate increasing in reinforced disc thickness can effectively improve the load capacity of raceway edge of the bearings;the lower position of raceway can effectively improve the fatigue strength of bearing ring.
作者
陈晨
刘勇
李亚
任旦元
王斌
CHEN Chen;LIU Yong;LI Ya;REN Danyuan;WANG Bin(Zhejiang Windey Co.,Ltd.,Hangzhou 310012,China;Key Laboratory of Wind Power Technology of Zhejiang Province,Hangzhou 310012,China)
出处
《轴承》
北大核心
2023年第6期59-63,共5页
Bearing
关键词
滚动轴承
风电轴承
双排四点接触球轴承
风力发电机组
强度
影响因素
有限元模型
rolling bearing
wind turbine bearing
double row four point contact ball bearing
wind turbine
strength
influencing factor
finite element model
