大功率重载荷复合行星传动系统均载特性研究

Compound planetary gear transmission system, with advantages of small in size, light in weight and strong power in load capacity, is widely used in new fields, including transportation, aerospace and energy exploration. The even distribution of load among each transmission path is a key factor of compound planetary gear transmission system, especially influencing the operation stability and work efficiency of compound planetary gear transmission system with features of high power and heavy load. While, there is, currently, no corresponding information on load sharing characteristics for compound planetary gear transmission system, and no reliable basis for optimizing load sharing characteristics of compound planetary gear transmission system with features of high power and heavy load, which restricts the application and development of the system. So the project proposes to research load sharing characteristics with a method of combining theoretical analysis, numerical simulation and physical experiment, trying to get dynamic features of the transmission system under constant load and stochastic load, and tries to found a method of optimizing load sharing characteristics. Meanwhile, a physical experiment platform is to be built to test and verify the validity of theoretical analysis and corresponding computing results. By means of intensive study on the project, it is expected to improve the load sharing characteristic, to reduce vibration and noise, and to enhance reliability of compound planetary gear transmission system. All the achievements of the project can provide theoretical basis and designing principal for large-scale engineering application of compound planetary gear transmission system with features of high power and heavy load.

复合行星传动系统具有体积小、重量轻和承载能力强等优点，广泛应用于新一代交通运输、航空航天以及能源开发领域中。载荷在各路传动上的分配均匀性是复合行星传动系统中的关键问题，特别影响到大功率重载荷复合行星传动系统的可靠性和工作效率。然而目前国内外一直缺乏复合行星传动系统均载问题的相关报道,迄今尚无优化改进大功率重载荷复合行星传动系统均载特性的可靠依据，制约着大功率重载荷复合行星传动系统的发展提高与推广应用。本项目针对大功率重载荷复合行星传动系统均载特性开展研究，采用理论分析、数值模拟和实验研究相结合的方法，通过建立复合行星传动系统非线性动力学模型，求解系统在定常及随机载荷激励作用下的动态响应，提出均载性能优化方法。预期通过本项目的研究，改善复合行星传动系统的均载性能、降低系统振动与噪声、提高传动系统的可靠性，为大功率重载荷复合行星传动系统的大规模工程应用提供理论基础和设计依据。

复合行星传动系统具有体积小、重量轻和承载能力强等优点，广泛应用于新一代交通运输、航空航天以及能源开发领域中。载荷在各路传动上的分配均匀性是复合行星传动系统中的关键问题，特别影响到大功率重载荷复合行星传动系统的可靠性和工作效率。本课题针对大功率重载荷复合行星传动系统均载特性开展研究，采用理论分析、数值模拟和实验研究相结合的方法，建立了复合行星传动系统非线性动力学模型，分别采用解析法和数值法计算了系统在定常及随机载荷激励作用下的动态响应；基于单因素分析，深入研究了非线性误差、刚度、阻尼、间隙和齿面磨损的基础上对系统均载特性的影响规律；发现并深入研究了均载特性与齿面磨损的双边耦合影响关系。搭建了大功率重载荷复合行星传动系统的物理实验台，分别在静态与动态环境下进行了试验，得到了与理论分析相一致的试验结果，证明了先前理论分析的正确性。提出并建立了大功率重载荷复合行星传动系统均载多因素分析模型，在众多激励因素中找出并优化了决定复合轮系均载性能的最关键激励，为大功率重载荷复合行星传动系统的均载优化奠定了理论基础。