| 摘要 |
Means for stopping a flywheel type electric power storage apparatus when power service is interrupted, including a thrust plate (11) connected to a rotary section and formed with a thrust bearing surface, and a pressure bearing surface (26) formed with a thrust bearing surface confronting the lower surface of the thrust plate (11). A plurality of grooves (27) are radially formed on an oblique land (28) slanting upwards toward the direction of rotation on the side wall in the direction of rotation of the rotary section on the pressure bearing surface (26). Cooling fluid flow holes (33) for flowing cooling fluid through a solenoid valve (35) opened simultaneously with the interruption of power source are buried under the pressure bearing surface (26). Further, means for holding oil on the thrust bearing surface when power service is interrupted is provided there. Thus, it allows high reliability in stopping operation of the means even when power service is interrupted. |
