| 摘要 |
PROBLEM TO BE SOLVED: To prevent local super heat due to the inclination of a connection fixture caused when the length of seeds of a 2-piece set that are set guard-frame like using the connection fixture is uneven, by holding the connection fixture horizontally without canceling the unevenness. SOLUTION: A stand 20 supporting the lower end part of the seed 10 is supported by a 1st pedestal 30 composed of a male screw member. The 1st pedestal 30 is supported to be vertically moved by a fixed type 2nd pedestal 40 composed of a female screw member. The supported height of the seed 10 is adjusted by the vertical movement of the 1st pedestal 30. After the height adjustment, the 1st pedestal 30 is fixed by a lock nut 50.
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