| 摘要 |
PROBLEM TO BE SOLVED: To provide an installation fixed structure to a slot body of a grating for performing load fixing of the grating 1 of a square grating body consisting of bearing bars 2 arranged on a holding frame member 10 laid down and fixed to an installation slot 21 of the upper end of the U-shaped slot body 20 and a side frame piece capable of raising moldability of the installation fixed structure, workability of the installation fixing and work efficiency. SOLUTION: A joint plate 7 vertically passing through a bolt free insertion hole 8 of a fixed bolt B is fixed between the bearing bars 2 adjacent to each other of the grating 1, the holding frame member 10 is detachable from the inside of the slot body 20 to provide a U-shaped joint member 15 opening a screwing female screw section 18 of the fixed bolt B above, and the grating 1 is laid down and fixed to the holding frame member 10 by screwing and fastening to the screwing female screw section 18 of the fixed bolt B passing through the bolt free insertion hole 8. COPYRIGHT: (C)2004,JPO
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