转子系统齿式联接不对中故障的运动学机理研究

Study on Kinematic Mechanism of Misalignment Fault of Rotor System Connected by Gear Coupling

从运动学角度研究了齿式联接高速重载转子系统具有不对中时的运动机理及其故障物理特性。建立了在不对中状态下联轴器外壳质心、瞬心以及啮合线的运动方程;揭示了具有不对中转子系统的外壳轴心线的回转规律;指出了齿式联接不对中转子系统运行的误差条件;提供了齿式联轴器不对中故障识别以及与相同频率特征故障区分的理论依据。

The kinetic mechanism of high-speed and heavy-load rotor systems connected by the gear coupling and its fault physical properties are researched from the viewpoint of kinematics when they are of misalignment. The kinetic equations of crustaceous centroid, instantaneous center and its mesh line of coupling under the condition of misalignment are established. The rotating rules of crustaceous axes of rotor systems are revealed which are of misalignment. The running error conditions of the misalignment rotor systems connected by the gear coupling are indicated. The theoretic gists that we identify the misalignment fault of the gear coupling and distinguish the faults with the same frequency properties are provided in the paper.