大功率行星减速器行星架特性分析及结构优化
发布时间：2019-01-21 21:27
【摘要】：行星齿轮传动由于具有重量轻、承载能力强及效率高等优点,广泛应用于各个工业领域。考虑到行星齿轮传动的承载性能,就要求系统各构件具有足够的强度和可靠性。而行星架作为行星齿轮传动中关键性零件之一,它的变形对齿轮啮合所产生的接触应力分布影响较大,所以行星架要具有足够的静强度和一定的刚度。理论上,行星齿轮传动系统的载荷由各行星轮均衡承担,但是由于零部件的制造误差、安装误差及变形的存在,使得各个行星轮间载荷分配并不均衡,这就一方面增加了行星轮的设计载荷,一方面增加了系统的振动和噪声。行星架作为行星齿轮传动系统的主要构件之一,它的结构变形和误差参数对整个系统的均载性能有着较大的影响。目前国内对行星架的研究主要集中在中小型及结构较为简单的行星架,对大功率船用行星齿轮箱中结构复杂的行星架研究较少,而且对于行星架的各个因素对整个行星齿轮传动系统均载性能影响分析还不够深入。因此,开展大功率船用行星齿轮系统主要构件行星架的理论研究,确定各种影响因素与系统不均载系数之间的关系,具有重要的工程应用背景,其研究成果对行星齿轮传动系统的设计具有指导意义。 本文以大功率船用行星减速器差动级行星架为研究对象,通过静力学计算得到行星架所受静载荷,并用常规计算方法和有限元法分别对差动级行星架刚度进行校核。用大型有限元分析软件ANSYS对行星架进行约束模态分析,介绍了瞬态动力学分析的基本概念和分析目标,比较了三种瞬态动力学分析方法的优劣,详细介绍了模态叠加法的基本计算理论。以动力学计算的动载荷为输入载荷,对行星架进行瞬态动力学分析,得到行星架瞬态位移响应,并对行星架瞬态位移响应进行稳态判断。分析了行星架制造误差和安装误差,建立了差动级系统不均载系数集中质量模型,编写了计算流程,计算了功率分流型行星齿轮传动中各行星轮和太阳轮啮合力的变化状态以及行星齿轮传动系统差动级不均载系数。在此基础上单独分析了误差、行星架刚度、质量和转速对不均载系数的影响。分析了行星架各结构参数对行星架最大应力和最大变形的局部灵敏度和全局灵敏度的影响,并在灵敏度分析的基础上对行星架进行结构优化,比较优化前后应力和变形分布,检验优化结果的有效性。
[Abstract]:Planetary gear transmission is widely used in various industrial fields because of its advantages of light weight, strong bearing capacity and high efficiency. Considering the bearing capacity of planetary gear transmission, it is necessary to have enough strength and reliability for each component of the system. As one of the key parts in planetary gear transmission, the deformation of planetary frame has a great influence on the distribution of contact stress produced by gear meshing, so the planetary frame should have enough static strength and certain stiffness. In theory, the load of planetary gear transmission system is balanced by each row star wheel, but due to the components manufacturing error, installation error and the existence of deformation, the load distribution among the planetary gear is not balanced. This not only increases the design load of the planetary gear, but also increases the vibration and noise of the system. As one of the main components of planetary gear transmission system, the structure deformation and error parameters of planetary frame have great influence on the load sharing performance of the whole system. At present, the research on the planetary frame is mainly focused on the small and medium-sized planetary rack with simple structure, but the complex planetary frame in the high-power marine planetary gearbox is less studied. Moreover, the analysis of the influence of every factor of the planetary frame on the load performance of the whole planetary gear transmission system is not enough. Therefore, it has important engineering application background to carry out the theoretical research on the planetary frame, which is the main component of high-power marine planetary gear system, and to determine the relationship between various influencing factors and the uneven load coefficient of the system. The research results have guiding significance for the design of planetary gear transmission system. In this paper, the differential planetary frame of high power marine planetary reducer is taken as the research object, the static load of the planetary frame is obtained by statics calculation, and the stiffness of the differential planetary frame is checked by conventional calculation method and finite element method respectively. The finite element analysis software ANSYS is used to analyze the constrained modes of the planetary frame. The basic concepts and objectives of the transient dynamic analysis are introduced, and the advantages and disadvantages of the three transient dynamic analysis methods are compared. The basic calculation theory of modal superposition method is introduced in detail. Taking the dynamic load calculated by dynamics as the input load, the transient dynamic response of the planetary frame is obtained by transient dynamic analysis, and the transient displacement response of the planetary frame is judged stably. The manufacturing error and installation error of planetary frame are analyzed, the lumped mass model of uneven load coefficient of differential stage system is established, and the calculation flow is compiled. The variation state of the meshing force between the star wheel and the solar wheel and the differential load coefficient of the planetary gear transmission system are calculated. On this basis, the effects of error, planetary frame stiffness, mass and rotational speed on the uneven load coefficient are analyzed separately. The influence of structural parameters on the local and global sensitivity of the maximum stress and deformation of the planetary frame is analyzed. Based on the sensitivity analysis, the structure of the planetary frame is optimized, and the distribution of stress and deformation before and after optimization is compared. Verify the effectiveness of the optimization results.
【学位授予单位】：中国舰船研究院
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH132.46
本文编号：2413057
[Abstract]:Planetary gear transmission is widely used in various industrial fields because of its advantages of light weight, strong bearing capacity and high efficiency. Considering the bearing capacity of planetary gear transmission, it is necessary to have enough strength and reliability for each component of the system. As one of the key parts in planetary gear transmission, the deformation of planetary frame has a great influence on the distribution of contact stress produced by gear meshing, so the planetary frame should have enough static strength and certain stiffness. In theory, the load of planetary gear transmission system is balanced by each row star wheel, but due to the components manufacturing error, installation error and the existence of deformation, the load distribution among the planetary gear is not balanced. This not only increases the design load of the planetary gear, but also increases the vibration and noise of the system. As one of the main components of planetary gear transmission system, the structure deformation and error parameters of planetary frame have great influence on the load sharing performance of the whole system. At present, the research on the planetary frame is mainly focused on the small and medium-sized planetary rack with simple structure, but the complex planetary frame in the high-power marine planetary gearbox is less studied. Moreover, the analysis of the influence of every factor of the planetary frame on the load performance of the whole planetary gear transmission system is not enough. Therefore, it has important engineering application background to carry out the theoretical research on the planetary frame, which is the main component of high-power marine planetary gear system, and to determine the relationship between various influencing factors and the uneven load coefficient of the system. The research results have guiding significance for the design of planetary gear transmission system. In this paper, the differential planetary frame of high power marine planetary reducer is taken as the research object, the static load of the planetary frame is obtained by statics calculation, and the stiffness of the differential planetary frame is checked by conventional calculation method and finite element method respectively. The finite element analysis software ANSYS is used to analyze the constrained modes of the planetary frame. The basic concepts and objectives of the transient dynamic analysis are introduced, and the advantages and disadvantages of the three transient dynamic analysis methods are compared. The basic calculation theory of modal superposition method is introduced in detail. Taking the dynamic load calculated by dynamics as the input load, the transient dynamic response of the planetary frame is obtained by transient dynamic analysis, and the transient displacement response of the planetary frame is judged stably. The manufacturing error and installation error of planetary frame are analyzed, the lumped mass model of uneven load coefficient of differential stage system is established, and the calculation flow is compiled. The variation state of the meshing force between the star wheel and the solar wheel and the differential load coefficient of the planetary gear transmission system are calculated. On this basis, the effects of error, planetary frame stiffness, mass and rotational speed on the uneven load coefficient are analyzed separately. The influence of structural parameters on the local and global sensitivity of the maximum stress and deformation of the planetary frame is analyzed. Based on the sensitivity analysis, the structure of the planetary frame is optimized, and the distribution of stress and deformation before and after optimization is compared. Verify the effectiveness of the optimization results.
【学位授予单位】：中国舰船研究院
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH132.46
【引证文献】
相关期刊论文 前1条
1 周绍利;赵雪利;赵克利;任峰;石振;;推土机行走减速器行星架结构的优化[J];中国工程机械学报;2012年03期
相关硕士学位论文 前1条
1 侯秋凉;偏航齿轮箱行星架的性能分析及结构优化设计[D];大连理工大学;2013年
，本文编号：2413057
本文链接：https://www.wllwen.com/kejilunwen/jixiegongcheng/2413057.html
