| 摘要 |
PURPOSE:To improve reliability of preventing a moving vane from loosening and ease replacement of parts in such a way that a groove equipped with an engaging part is provided at the dovetail part of a moving vane, a stopper is provided for engaging with the engaging part, and after engaging, turning of the stopper can be obstructed. CONSTITUTION:A groove 7 equipped with an engaging part 7a is provided on the bottom of the dovetail part 1a of a moving vane 1, a through hole 8 is made at the outer peripheral part of a disc 3 which is opposite to the engaging part 7a, and a stopper 9 equipped with an engaging part 9a is engaged with the hole 8. In addition, a ring 10 for preventing the stopper 9 from falling off the disc 3 is attached to the inside of the disc 3. In the event that the dovetail 1a of the moving vane 1 is provided at the dovetail groove 3a on the disc 3, and if the stopper 9 is turned so that the engaging part 9a can be engaged with the engaging part 7a, turning of the stopper 9 is obstructed by means of a bifurcate part 9b of the stopper 9 and an engaging groove 8a of the hole 8, and the stopper 9 is in no case to be fallen off by means of the ring 10 during the stop of a rotor and by means of centrifugal force during the turning of the rotor. |
