风力发电用超环面行星蜗杆传动性能模拟与优化设计

发布时间：2018-02-21 20:58

本文关键词： 超环面行星蜗杆传动二次开发模态分析谐响应分析参数优化　出处：《燕山大学》2012年硕士论文　论文类型：学位论文

【摘要】：超环面行星蜗杆传动具有传动比大、噪声小、效率高和承载能力大等优点。适合应用于要求较为苛刻的风力发电增速系统。相对于传统的风电多级行星齿轮传动机构，其显著优势在于结构紧凑、体积小。本文首先对超环面行星蜗杆传动的基本啮合特性进行了计算，确定了超环面传动的一系列参数配比，为后续的仿真分析奠定了基础。其次，使用三维造型软件PRO/ENGINEER对超环面传动机构进行了三维实体建模，进行了运动模拟及干涉检验；此外，在C++语言环境下结合PRO/TOOLKIT开发工具对机构零件模型进行了二次开发，模块化了建模过程，并创建了简单方便的建模界面。运用有限元仿真软件ANSYS WORKBENCH对机构进行了静力学仿真，分析了行星轮一个啮合周期中应力与变形的变化规律，并对不同参数下系统的应力与变形进行了研究。结果表明：超环面行星蜗杆传动的啮合力随啮合齿数不同而周期变化；采用锥形齿行星轮可明显降低啮合应力，但同时会增加行星轮变形量；增多行星轮个数可大幅降低接触应力，并减小各零件的变形量。通过系统模态仿真，对系统模态进行了归类与研究，分析了对系统振动影响较大的蜗杆旋转模态、行星架旋转模态与行星轮旋转模态；通过不同参数下的模态分析，得出了系统固有频率、振型及相对振动位移与系统参数的关系。通过系统谐响应分析，对机构在不同位置激振力作用下的受迫振动与动应力进行了研究；分析了传动系统在共振频率下的振动特性。针对现代某风机的传动性能要求，应用Matlab软件的优化工具箱对超环面传动进行了参数优化设计，优化了机构体积。使得机构体积减小量超过33%。为机构在风机上的实际应用奠定了基础。
[Abstract]:Super-toroidal planetary worm drive has the advantages of large transmission ratio, low noise, high efficiency and high bearing capacity, etc. It is suitable for application in wind power generation increasing speed system with demanding requirements, compared with the traditional multi-stage planetary gear transmission mechanism of wind power. Its remarkable advantage lies in the structure is compact, the volume is small. In this paper, the basic meshing characteristics of the supertoroidal planetary worm drive are first calculated, and a series of parameter ratios are determined, which lays a foundation for the subsequent simulation analysis. Secondly, the 3D solid modeling, motion simulation and interference test of the super toroidal transmission mechanism are carried out by using 3D modeling software PRO/ENGINEER, in addition, the part model of the mechanism is redeveloped with PRO/TOOLKIT development tool in C language. Modularized the modeling process and created a simple and convenient modeling interface. The finite element simulation software ANSYS WORKBENCH is used to simulate the mechanism statically, and the variation of stress and deformation in a meshing cycle of planetary gear is analyzed. The stress and deformation of the system under different parameters are studied. The results show that the meshing force of the supertoroidal planetary worm gearing varies periodically with the number of meshing teeth, and the meshing stress can be obviously reduced by using the conical planetary gear. But at the same time, the deformation amount of planetary gear will be increased, and the contact stress can be greatly reduced and the deformation of each part can be reduced by increasing the number of planetary gears. Through the system modal simulation, the system modal is classified and studied, and the worm rotation mode, the planetary frame rotation mode and the planetary wheel rotation mode, which have great influence on the system vibration, are analyzed through the modal analysis under different parameters. The relationship between system natural frequency, vibration mode and relative vibration displacement and system parameters is obtained. By analyzing the harmonic response of the system, the forced vibration and dynamic stress of the mechanism under the excitation force at different positions are studied, and the vibration characteristics of the transmission system at the resonance frequency are analyzed. According to the transmission performance requirements of a modern fan, the optimization toolbox of Matlab software is used to optimize the parameters of the super toroidal transmission. The volume of the mechanism is optimized and the volume of the mechanism is reduced to more than 33, which lays a foundation for the practical application of the mechanism in the fan.
【学位授予单位】：燕山大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH132.44

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