| 摘要 |
Safety fences for roads consist of poles and buffer rails (1) and are frequently rammed into on certain distances. Because of this it is important to make it possible to exchange damaged parts quickly and simply. The buffer rail made of tubular structural steel is therefore so formed that the outer contour of the section of the tubular structural steel (1) includes two parallel longitudinal lines, which are joined by a third line to form a U-form, the symmetry line of which coincides with an elongated line of the symmetry line of the section of the tubular structural steel so that a U-formed rib (4) is formed along the tubular structural steel, which rib is placed against the poles (3) and is attached to the poles by means of a screw machanical joint (2) which is fixed to the poles. |
