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考虑中间轴刚度的二级直齿轮系统动态特性分析
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国家自然科学基金资助项目(51665054);新疆自治区科技人才培养项目(QN2016BS0082)


Dynamic Characteristics Analysis of Twostage Spur Gear SystemConsidering Axial Stiffness
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    摘要:

    两级间所连接的中间轴的刚度是影响行星轮传动系统工作状态的重要因素。以某试验台二级直齿轮传动系统为研究对象,运用牛顿动力学理论建立二级齿轮传动平移-扭转动力学模型,讨论中间轴连接刚度的改变对系统动态特性的影响。结果表明:中间轴连接刚度的改变对中间轴所连接的相邻两轮齿的动载荷影响较为明显,随着中间轴连接刚度的增大,该轮齿的支撑动载荷在逐渐减小;同时,对各频率成分以及其倍频的影响较为明显,随着连接刚度的增大,各频率成分及其倍频成分的能量呈现线性减小、再平稳的变化趋势。中间轴连接刚度的改变使系统的固有频率及其振型产生了模态跃迁的情况。

    Abstract:

    The stiffness of the intermediate shaft connected between the two stages affects the working condition of the planetary gear drive system. The secondorder spur gear system of a test bed was used as the research object, and the secondorder gear shifttorsion dynamic model was built, the influence of the change of the stiffness of the intermediate shaft on the dynamic characteristics of the system was discussed. The results show that the change of the stiffness of the intermediate shaft is more obvious for the dynamic load of the adjacent two teeth connected by the intermediate shaft. With the increase of the connecting stiffness of the intermediate shaft, the dynamic load of the tooth is gradually decreased. At the same time, the influence on each frequency component and its frequency doubling is obvious, and the energy of each frequency component and its frequency multiplication component decreases linearly with the increase of connection stiffness. The change of the stiffness of the intermediate shaft connection causes the natural frequency of the system and its mode to produce mode transition.

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王胜男,周建星,陈锐博,阿达依·谢尔亚孜.考虑中间轴刚度的二级直齿轮系统动态特性分析[J].机床与液压,2019,47(7):14-20.
. Dynamic Characteristics Analysis of Twostage Spur Gear SystemConsidering Axial Stiffness[J]. Machine Tool & Hydraulics,2019,47(7):14-20

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  • 在线发布日期: 2019-12-04
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