| 摘要 |
PURPOSE: To rapidly and accurately regulate the inclination of a partition plate of molding upper and lower paces of a stair by covering a plurality of overall molding elements with a flexible water-tight thin plate and providing a thin plate tension generating mechanism and a partition plate angle regulating mechanism between the elements. CONSTITUTION: One bottom 3 is placed between two partition walls in a form for manufacturing a concrete element of a stair. The bottom 3 is formed of juxtaposed molding elements 4, 5. A flexible thin plate 5 watertightly movable to the concrete is coupled to the elements 4, 5, and connected by a mechanism 7 for giving a tension thereto. Modules 4 of the molding are formed of two partition plates 11, 12, which are coupled to one another along edges of a bihedral formed therewith, and trucks 9 for supporting it is coupled thereto. The two trucks 9 are coupled by an extending and contracting mechanism 13. Thus, the planar angle of the bihedral of the two partition plates can be regulated, and can be matched to a size of an angle of an non-skid of each tread of the stair to be manufactured. |
