四点接触球转盘轴承承载能力分析

发布时间：2019-06-07 17:04

【摘要】：基于赫兹接触理论和有限元方法,利用有限元分析软件,分析四点接触球转盘轴承结构参数对轴承接触应力、变形量的影响。该研究的结果可以为相关研究设计提供一定支持。针对同一模型,即1.25MW级风力发电机组偏航轴承,在某给定的工况条件下分别对30组不同沟曲率半径系数模型、11组不同内圈厚度模型、11组不同内圈高度模型、10组不同挡边高度模型、16组不同倒角模型的进行有限元仿真计算,得到相应的应力、变形量结果。得到一定范围内四点接触球转盘轴承随各结构参数的变化,应力状态、变形量状态相应的变化趋势。结果表明,当内、外圈沟曲率半径系数分别为0.51和0.525时轴承的承载能力最高,沟曲率半径系数对轴承变形量影响较小,而内圈厚度、高度、挡边有效高度及倒角对轴承变形量的影响较大。研究结果为风电偏航轴承计算、设计提供了分析依据。
[Abstract]:Based on Hertz contact theory and finite element method, the influence of structural parameters of four-point contact ball turntable bearing on contact stress and deformation of bearing is analyzed by using finite element analysis software. The results of this study can provide some support for the related research design. For the same model, that is, the yaw bearing of 1.25MW wind turbine, 30 groups of different groove curvature radius coefficient models, 11 groups of different inner ring thickness models, 11 groups of different inner ring height models under a given working condition, Ten groups of different baffle height models and 16 groups of different chamfering models were simulated by finite element method, and the corresponding stress and deformation results were obtained. The variation trend of four-point contact ball turntable bearing with the change of structural parameters, stress state and deformation state in a certain range is obtained. The results show that when the curvature radius coefficient of inner ring and outer ring groove is 0.51 and 0.525 respectively, the bearing capacity is the highest, the groove curvature radius coefficient has little effect on the deformation of bearing, but the thickness and height of inner ring, The effective height and chamfer of the baffle have great influence on the deformation of the bearing. The research results provide an analytical basis for the calculation and design of wind power yaw bearings.
【学位授予单位】：上海应用技术学院
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TH133.3

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