| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent bolts fixing a rack cover from protruding the top surface of the rack cover and protect a person walking on the rack cover from stumbling on the bolts. SOLUTION: A rack cover fixing metal fitting 30 which has a belt plate part 31, a retaining part 32 with which the rack cover fixing metal fitting 30 is retained by the bottom end of a main beam 1, a protruding part 33 which protrudes in a obliquely upward direction on the side opposite to the retaining part 32, and a folded part 34 which is folded in a horizontal direction so as to have a length reaching the production of the belt plate part 31 and has bolt insertion holes; bolts 40 which are inserted through the attachment holes 4a of a rack cover 4 and the bolt insertion holes of the rack cover fixing metal fitting 30, are provided. After the rack cover fixing metal fitting 30 is retained by the bottom end 1a of the main beam 1 with the retaining part 32 on the one end of the rack cover fixing metal fitting 30, the tips of the bolts 40 inserted through attachment holes 4a of the rack cover 4 are screwed into the bolt insertion holes of the folded part 34, and tightened to fix the rack cover 4 put on the top end of the main beam 1 to the main beam 1.</p> |
