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Mesh Phase Analysis of Encased Differential Gear Train for Coaxial Twin-Rotor Helicopter

机译：同轴双转子直升机包装差动齿轮系的网格相分析

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摘要

Dynamic excitation caused by time-varying meshing stiffness is one of the most important excitation forms in gear meshing process. The mesh phase relations between each gear pair are an important factor affecting the meshing stiffness. In this paper, the mesh phase relations between gear pairs in an encased differential gear train widely used in coaxial twin-rotor helicopters are discussed. Taking the meshing starting point where the gear tooth enters contact as the reference point, the mesh phase difference between adjacent gear pairs is analyzed and calculated, the system reference gear pair is selected, and the mesh phase difference of each gear pair relative to the system reference gear pair is obtained. The derivation process takes into account the modification of the teeth, the processing, and assembly of the duplicate gears, which makes the calculation method and conclusion more versatile. This work lays a foundation for considering the time-varying meshing stiffness in the study of system dynamics, load distribution, and fault diagnosis of compound planetary gears.
机译：由时变啮合刚度引起的动态励磁是齿轮啮合过程中最重要的激励形式之一。每个齿轮对之间的网格相位关系是影响啮合刚度的重要因素。本文讨论了在同轴双转子直升机中广泛应用于同轴双转子直升机的齿轮对之间的齿轮对的网状相位关系。采用齿轮齿进入接触作为参考点的啮合起始点，分析并计算相邻档位之间的网格相位差，选择系统参考齿轮对，以及每个齿轮对相对于系统的网格相位差获得参考齿轮对。推导过程考虑了牙齿的修改，重复齿轮的齿，处​​理和组装，这使得计算方法和结论更通用。这项工作奠定了基础，用于考虑系统动态，负荷分布和复合行星齿轮的故障诊断研究中的时变啮合刚度。

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  • 来源
    《Mathematical Problems in Engineering》 |2019年第16期|8421201.1-8421201.9|共9页
  • 作者

    Zhang Donglin; Zhu Rupeng; Fu Bibo; Tan Wuzhong;

  • 作者单位

    Nanjing Univ Aeronaut & Astronaut Natl Key Lab Sci & Technol Helicopter Transmiss Nanjing 210016 Jiangsu Peoples R China;

    Nanjing Univ Aeronaut & Astronaut Natl Key Lab Sci & Technol Helicopter Transmiss Nanjing 210016 Jiangsu Peoples R China;

    AECC Hunan Aviat Powerplant Res Inst Zhuzhou 412002 Peoples R China;

    AECC Hunan Aviat Powerplant Res Inst Zhuzhou 412002 Peoples R China;

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