| 摘要 |
PURPOSE:To prevent a current collecting ring from vibrating by constructing to cool the ring with oil to be supplied to a bearing, thereby preventing the ring from rising the temprerature. CONSTITUTION:A current collecting ring 3 shrink-fitted to a rotor shaft 1 supported via a bearing 7 is cooled by circulating oil fed to the bearing 7 through a series of oil supply and exhaust holes 12 extending axially of the shaft 1 and the ring 3 by the pumping head difference due to the centrifugal force of the shaft 1. Thus, the ring 3 is cooled by the oil of the bearing 7, thereby preventing the ring 3 from vibrating the due to the heat. |
