| 摘要 |
PURPOSE:To remove a thrust vibration by applying prepressurizing effect to a bearing which bears a thrust by loading the thrust of the prescribed direction by the bearing. CONSTITUTION:A rotor 6 of a motor and a rotor 7 of a generator are mounted on a rotor shaft 2, and this shaft 2 is supported by a ball bearing 8 and a cylindrical roller bearing 10. In this case, the rotor 2 is inclined at an oblique angle (alpha) (1 deg.-10 deg.) in the negative direction with respect to an X-axis, and hung via vibration resistance rubber 4 by mounting seats 25, 26 of different sizes secured to the motor generator. Thus, the bearing 8 is held in an equilibrium at the position where the center line of the inner race is moved rightward from the center line of the outer race, a prepressurizing effect is applied by loading the thrust of the prescribed direction, the shaft 2 is not freely moved in the thrust direction during operating, thereby eliminating the thrust vibration. |
