| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a stair for a temporary scaffold, in which the angle of inclination of the stair can be changed and which is easy to be ascended and descended by altering the place of the installation of a handrail frame in response to the variation of the angle of inclination. SOLUTION: Both side sections of the front ends of a plurality of treads 4 are journaled rotatably between a pair of parallel inclined supports 3, in which retaining metal fittings 2 are fixed at both ends. Both side sections of the rear ends of the treads 4 are journaled rotatably between a pair of link materials 6 disposed in parallel in width slightly narrower than width between the inclined supports 3. The height and width of the link materials 6 are made shorter than those of the inclined supports 3 and the link materials 6 can be housed in the inclined supports 3, and angle fixing materials 13 fixing the angles of the treads 4 are arranged among the inclined supports 3 and the link materials 6. Socket metal fittings 18, which freely move the place of the installation of a handrail frame 25 in the height direction of the inclined supports 3 and comprise short pipes 16, are disposed to the inclined supports 3.</p> |
