风电回转轴承轮齿特性研究

发布时间：2018-01-11 17:09

本文关键词：风电回转轴承轮齿特性研究　出处：《河南科技大学》2012年硕士论文　论文类型：学位论文

【摘要】：由于资源短缺、环境的污染、油价上涨以及人们对核能应用污染的恐惧，当今社会对清洁，可持续的能源的需求十分强烈，因此造就了当下风能发电技术和产业的快速发展。风电回转轴承是风电设备的重要部件之一，是回转轴承的一种。风电回转轴承主要用于偏航和变桨，一般有内圈、外圈、保持架和滚子组成，内圈或外圈带有传动齿，可以和驱动小齿轮啮合传动扭矩。由于安装位置不易拆装，而且拆装的费用比较高，拆装需要的周期比较长，所以对风电回转轴承可靠性提出了十分严格的要求，一般情况下要求风电转盘轴承的寿命和机组寿命相同，并且必须能达到20年以上的水平。所以对风电回转轴承的研究，尤其是加工工艺对可靠性的研究十分重要由于风电回转轴承是一种大型轴承，对其外圈或者内圈轮齿的研究时，，实际试验的难度很大，同时需要大量的资金。所以文中以风电回转轴承的外圈轮齿作为研究对象，使用有限元分析软件，对轮齿进行了接触、热和热应力的模拟分析，获得了各个过程中的应力、应变和温度场的变化。这种方法有效的解决了实际试验的缺点。论文完成的工作主要有：1.主要对轮齿工作过程中接触力学进行分析。首先建立轮齿接触过程中的参数化模型，对齿轮的接触过程进行计算机仿真，然后分析接触过程的计算机仿真结果。通过这些分析可以获得轮齿在接触过程中力的分布情况，可以分析出在实际的接触中力主要分布在齿面的接触处和齿根部分。最后对比不同轮齿的金相特征，金相特征分析可以获得软硬面轮齿的组织结构，再综合接触仿真分析力的集中情况，判定软硬面轮齿的优劣。2.对轮齿在加工程中淬火的模拟分析，综合了正交实验法和有限元分析法。首先确定正交实验的因素和水平，再根据正交实验的因素和水平选择正交实验表。然后依照正交实验表获得的各因素和水平的组合界定有限元分析的边界条件，对轮齿进行温度场和热应力的仿真。最后用正交实验的结果分析方法对仿真的结果进行分析，从而根据分析结果判断各参数对淬火的影响。该过程是采用正交实验法，通过有限元分析获得不同参数的温度场和热应力分析结果，再使用正交实验的极差分析法进行结果处理，最后根据分析结果推荐淬火参数。
[Abstract]:Due to the shortage of resources, environmental pollution, rising oil prices and fears of nuclear power application of pollution, in today's society of clean, sustainable energy demand is very strong, thus creating a rapid development of the wind power generation technology and industry. Wind power bearings is one of the most important parts of wind power equipment, is a rotary bearing. Wind power bearings mainly used for yaw and pitch, generally have the inner ring, outer ring, retainer and a roller. The inner or outer ring with a transmission gear, and can drive pinion transmission torque. The installation position is not easy to disassemble and assemble, the cost is relatively high, and requires relatively long cycle, so put forward very strict requirements of wind power bearings reliability, general requirements of life and the life of wind turbine slewing bearing the same, and must be able to reach more than 20 years. So the level of the wind The research of electric rotary bearing, especially the processing technology, is very important for the study of reliability.
Because of wind power bearings is a large bearing on its outer or inner gear, the actual test is very difficult, and needs a lot of money. So the outer ring gear tooth wind power bearings as the research object, using finite element analysis software of gear contact analysis and thermal simulation stress, stress in the process of obtaining, strain and temperature. This method can effectively solve the shortcomings of the test.
The main works are: 1. through the analysis of the main contact mechanics in gear working process. Firstly, the parametric model of tooth contact during the contact process of gear by computer simulation, and then analyze the simulation results of the contact process. The distribution can be obtained through the analysis of gear in the process of contact force, can the analysis in the actual contact force distribution in the tooth surface and the tooth root part. Metallographic characteristic of different gear comparison, metallographic structure analysis can obtain the characteristics of soft and hard tooth, then contact concentration simulation analysis of force, determine the simulation analysis of the gear in the process of quenching the merits of soft hard.2. the tooth, comprehensive orthogonal experimental method and finite element analysis. First determine the factors and levels of orthogonal experiment, according to the orthogonal experiment and water Flat selection table of orthogonal experiment. Then according to the orthogonal experiment table defines the boundary conditions the combination of the factors and levels of finite element analysis and Simulation of temperature field and thermal stress of the tooth. Finally, the results of orthogonal experiment analysis method to analyze the results of the simulation, according to determine the effect of various parameters on the quenching analysis results. The process is using the orthogonal experiment method, the analysis results of temperature field and thermal stress of different parameters are obtained by finite element analysis, and then use the range analysis of orthogonal experiment results, according to the analysis results to recommend quenching parameters.

【学位授予单位】：河南科技大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH133.3

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