| 摘要 |
PROBLEM TO BE SOLVED: To prevent slipping-off by vibrations and load by installing a screw- section grade guide around a drill metal fitting, in which a screw section is machined at one end section. SOLUTION: A drill metal fitting 1, on which a nut-shaped joint is mounted, is rotated and inserted to a concrete wall surface 2, and the drill metal fitting 1 is screwed to the concrete wall surface 2 by a screw-section grade guide 3. The nut-shaped joint is turned reversely and removed from the drill metal fitting 1, and a support member 6 at the end section of the drill metal fitting 1 is inserted and fixed by a nut 7. Accordingly, the anchor is bitten into concrete, slipping-off by vibrations and load is prevented, and smooth and easy installation is carried out. Mortar is poured between the screw-section grade guide 3 by forming a groove to a part of the drill metal fitting 1 or a section between the drill metal fitting 1 and an arranged bar is filled with a metallic bonding solution through the groove, thus allowing the further increase of the degree of fixing of the drill metal fitting 1.
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