大型渐开线斜齿内齿轮副强度分析与齿廓修形方法研究

发布时间：2018-02-26 00:02

本文关键词： 斜齿内啮合齿轮副强度分析有限元法轮齿修形　出处：《沈阳工业大学》2012年硕士论文　论文类型：学位论文

【摘要】：可持续能源战略提倡以新能源逐步取代化石燃料能源，是一种优先发展的战略。在各种新能源中，风能目前在很多发达国家中都占有很重要的地位。随着国际合作研究的不断进行，各种成熟的风能转换技术可以逐步满足各个相关产业的快速发展。风力发电机组的研发已成为引领当今社会绿色能源发展的潮流。齿轮箱在风电产业的迅速发展中起到至关重要的作用，而在对齿轮箱的设计的过程中，其最主要的传递动能的部件为齿轮，因此分析齿轮啮合过程的强度并对其进行优化是齿轮箱设计中至关重要的一步。结合风力发电机组安设位置，将客观因素考虑到齿轮箱设计中，对齿轮啮合过程中的接触应力和齿根弯曲应力进行分析。文中结合沈阳鼓风机集团风电有限公司中兆瓦级风力发电机组增速箱设计实例，吸收国外2兆瓦风力发电机组增速箱结构设计技术，开发具有自主知识产权的风机齿轮箱，对齿轮箱进行整体和局部研究，改进设计方案，改善齿轮传动性能，提高齿轮承载能力和使用寿命。本文主要的研究对象为风力发电机组中减速箱内一级行星轮系的行星轮和内齿轮，运用三维立体建模技术与有限元分析方法对其进行应力计算，并结合修形原理选择合适的修形方法和修形参数进行修形。对按照修形方案修形后的齿轮进行应力分析，得出有限元分析结果，确定修形可行性。本文主要研究内容如下：（1）运用经典接触力学的方法，，求解齿轮啮合过程中，齿轮的接触应力和齿根弯曲应力，分别与许用接触应力和齿根弯曲应力进行对比，确定齿轮箱设计合理性。（2）运用Pro/E建立斜齿内啮合齿轮精确模型，利用无缝接口技术将其导入ANSYS中进行有限元分析，并与同样参数下的直齿内啮合齿轮进行对比分析，明确了斜齿内啮合齿轮副改善接触应力的效果。（3）对一级行星轮系中的内齿轮进行齿廓修形，并通过有限元分析其最大接触应力，确定了修形后齿轮传动性能和强度的改善情况。
[Abstract]:The sustainable energy strategy, which advocates the gradual replacement of fossil fuels with new sources of energy, is a priority development strategy. Wind energy plays an important role in many developed countries. With the development of international cooperation, All kinds of mature wind energy conversion technology can gradually meet the rapid development of various related industries. The research and development of wind turbine has become the trend of leading the development of green energy in today's society. The gearbox plays a vital role in the rapid development of wind power industry, and in the design of the gearbox, the most important part of the transmission of kinetic energy is the gear, Therefore, analyzing the strength of gear meshing process and optimizing it is a very important step in gearbox design. Considering the installation position of wind turbine, the objective factors are taken into account in the gearbox design. The contact stress and tooth root bending stress during gear meshing are analyzed. An example of the design of a megawatt wind turbine growth box in Shenyang Blower Group Wind Power Co., Ltd is presented in this paper. Absorbing the structural design technology of 2 MW wind turbine growth box from abroad, developing the fan gearbox with independent intellectual property right, carrying on the integral and local research on the gearbox, improving the design scheme, improving the gear transmission performance, Increase gear bearing capacity and service life. The main research object of this paper is the planetary gear and inner gear of the first grade planetary gear train in the deceleration box of wind turbine. The stress of the gear train is calculated by using three-dimensional modeling technology and finite element analysis method. Combined with the principle of modification, the appropriate modification method and modification parameters are selected. The stress analysis of gears modified according to the modification scheme is carried out, and the results of finite element analysis are obtained to determine the feasibility of modification. The main contents of this paper are as follows:. 1) the contact stress and tooth root bending stress of gear in meshing process are solved by classical contact mechanics method, which are compared with allowable contact stress and tooth root bending stress, respectively, and the design rationality of gear box is determined. 2) using Pro/E to establish the accurate model of helical internal meshing gear, using seamless interface technology to import it into ANSYS for finite element analysis, and comparing it with the straight tooth internal meshing gear under the same parameters. The effect of the helical gear pair on the contact stress is determined. The tooth profile modification of the inner gear in the first grade planetary gear train is carried out, and the improvement of the gear transmission performance and strength after the modification is determined by the finite element analysis of the maximum contact stress.
【学位授予单位】：沈阳工业大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH132.41

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