| 摘要 |
PROBLEM TO BE SOLVED: To prevent the projections of corrugated sheets from falling forward in an expanding/shrinking device provided with a pair of corrugated sheets face to face. SOLUTION: Horizontal anchors 10 protruded on the back sections of the corrugated sheets 1 are connected to the vertical reinforcing connecting bars 11 of floor sheets 7, and the base end sections of the horizontal anchors 10 and the lower sections of the reinforcing connecting bars 11 are connected by diagonal reinforcements 15 to form a truss reinforcing structure.
|
