| 摘要 |
PURPOSE:To enable tension constraining means to be easily removed, by fitting the tension constraining means removably between bosses adjacent to a rotor spider. CONSTITUTION:Between the both bosses 3 of a rotor spider 12, tension constraining means 13 are arranged at equal intervals in the circumferential direction. The tension constraining means 13 are organized with screw washers 14 welded and fixed respectively on the bosses 3, a pair of screw bars 15 screwed into the screw washers 14, screw sleeves 16, 17 fitted respectively on the screw bars 15, and connecting nuts 18 fitted on the both screw sleeves 16, 17. When the rotor spider 12 is shrinkage-fitted, then the connecting nuts 18 of the respective tension constraining means 13 are previously turned, and a tensile force is applied between the both bosses 3, and a compressive stress is arranged to be worked on reinforcing plates 6. As the result, the distance between the bosses 3 can be kept constant, also after the rotor spider 12 is shrinkage-fitted. |
