| 摘要 |
PROBLEM TO BE SOLVED: To prevent an impeller straightening member from being loosened or fallen down. SOLUTION: After the straightening member 11 is fixedly screwed into a rotating shaft 50, a rotation preventing bolt 200 is inserted, through a tongued washer 210, into a hole 15 provided in the straightening member 11. The rotation preventing bolt 200 is screwed into a screw hole 50b provided at the end part 50a of the rotating shaft 50. One end of the tongued washer 210 as a locking member is bent toward a plane 19a formed at the top part 19 of the straightening member 11, and the other end is bent toward the head part side face of the rotation preventing bolt 200. |
