| 摘要 |
A scaffolding mast with at least two profile bars (1, 2, 3, ) which are attached to the edges of a triangle or square forming the cross section of the scaffolding mast. Two of the profiles (1, 2, 3) are connected to one or two or three connecting plates (10, 17, 18) forming the side of the triangle or square. Two grooves (4 - 9) are provided on the inner area of each of the profile bars (1, 2, 3) in which the 90.degree. offset edges (13, 14) of the connecting plate (10, 17, 18) are inserted and fastened at the place of insertion (Figure 1).
|
