| 摘要 |
PROBLEM TO BE SOLVED: To shorten a mounting work time by reducing the number of parts to be fastened into one when mounting blade parts to a supporting part.SOLUTION: A root part of 10 a blade part 9 includes two first blade side connection parts 12a, 12b at an upstream side and a downstream side in a rotating direction of the blade part 9. Between the first blade side connection parts 12a, 12b, a second blade side connection part 14 is provided. In a support part 8, two first support side connection parts 13a, 13b are included at positions confronted with the first blade side connection parts 12a, 12b and in the support part 8, a second support side connection part 15 is included at a position confronted with the second blade side connection part 14. The first blade side connection parts 12a, 12b and the first support side connection parts 13a, 13b are fitted and the second blade side connection part 14 and the second support side connection part 15 are fixed by a fastening means 17. |
