TBM减速器两级行星齿轮传动系统动力学特性研究

Research on Dynamic Characteristics of the Two-stage Planetary Gear Transmission System of TBM Reducers

隧道掘进机(Tunnel Boring Machine,TBM)减速器为TBM刀盘驱动系统重要部件。为了揭示TBM减速器两级行星齿轮传动系统的动力学特性,考虑TBM减速器两级行星齿轮传动系统的齿面摩擦、时变啮合刚度、齿侧间隙、传递误差等影响因素,运用集中参数法建立了TBM减速器两级行星齿轮传动系统的扭转动力学模型,求解分析了动力学特性。固有特性分析结果表明了行星轮系的3种振动模态形式:刚体模态、扭转振动模态、行星轮振动模态。动态响应分析得到各齿轮的振动位移及齿轮副间的动态啮合力。分析结果为该行星齿轮传动系统动态优化设计奠定了基础。

Tunnel boring machine(TBM)reducers are important components of TBM's cutter-head drive system.In order to reveal the dynamic characteristics of the two-stage planetary gear transmission system of the TBM reducer,the influence factors such as tooth surface friction,the time-varying meshing stiffness,the back⁃lash and meshing error of the two-stage planetary gear transmission system of the TBM reducer are considered.The torsional dynamics model of the two-stage planetary gear transmission system of the TBM reducer is estab⁃lished by the lumped parameter method,and its dynamic characteristics are solved and analyzed.The inherent characteristic analysis results show three vibration modes of the planetary gear train:rigid body vibration mode,torsional vibration mode and the planetary gear vibration mode;the vibration displacement of each gear and the dynamic meshing force between the gear pairs are obtained from the dynamic response analysis.The result lays the foundation for the dynamic optimization design of planetary gear trains.