| 摘要 |
PROBLEM TO BE SOLVED: To eliminate a need on welding work for a heavy shutter device 1 of a building by screwing and fixing inner and outer lintels 19, 20 while allowing positional adjustment in vertical and front-rear directions, the lintels being provided at a swallow port on a ceiling for a shutter curtain 6k.SOLUTION: Highly accurate fitting of lintels is made possible without welding work, by screwing and fixing an upper lintel material 22 that supports inner and outer lintels and a fixture 19f for the outer lintel using a drill screw and allowing positional adjustment in a vertical direction, and screwing and fixing the outer lintel 19 and a lower lintel material 21 that functions as the inner lintel using a drill screw and allowing positional adjustment in a front-rear direction.SELECTED DRAWING: Figure 27 |
