| 摘要 |
PURPOSE: To provide a fixing means for ensuring holding of a possibly complete position for a turbine vane or a blade under a centrifugal force effect due to high speed rotational speed. CONSTITUTION: In a turbomachine wheel incorporating a plurality of blades on a rotor 10 including an annular peripheral crown gear 18 formed therein with openings 20 which receive therein leg parts 22 of the blades 12, the leg part 22 of each of the blades 12 is radially received in the associated opening 20 parallel with the axis X-X of the rotor 10, having a telescopic fir tree-like complementary recess and protrusive body shape, and is fixed by two side panels 28, 30 which are arranged respectively on the opposite both side surfaces 24, 26 of a rotor, both ends of the opening 20 in which the leg part 22 is received, being blocked, at least in part, by the above-mentioned side panels. The first side panel 28 is fixed to a bayonet type rotor, having a protrusion 32 formed on the side panel 28, and is fitted in a cutout 40 formed in an annular crown gear 18 of a rotor. The front end part 44 in which the protrusion 32 is fitted is communicated with the opening 20 for the leg part of the blade 12, and the second side panel 30 is fastened and held by an axially fastening ring 78 which is prestressed. |
