SET OF LADDERS IN PARTICULAR FIRE LADDER AND VEHICLE EQUIPPED THEREWITH

摘要

The present invention consists of two or more ladder portions (1, 2, 3, 4, 5) formed from the side rails 11 and the crossbars 12 extending between the side rails 11, respectively, and the uppermost ladder The part (1) is formed from two or more ladder sections (1a, 1b) connected to each other by one articulated link (6), and the articulation axis (7) of the link is substantially relative to the crossbar (12). The first ladder section (1a) and the second ladder section (1b) are placed underneath, in a position where the uppermost ladder section (1) is completely retracted into the ladder section (2) lying below it. It relates to a set of stretchable ladders 10, in particular fire ladders, overlapping with the existing ladder portion 2. In order to expand the flexibility and range of use of the ladder set, at least the ladder section 2 lying directly under the uppermost ladder section 1 has a gap 8, which gap is the head of the ladder section 2 In the region, it is open toward the peak of the ladder portion between the side rails 11, and is formed continuously between the front and the rear of the ladder portion 2, resulting in the joint shaft 7 being the uppermost ladder portion 1 ) In a position overlapping with the ladder portion 2 lying immediately below, the second ladder section 1b can be tilted about the joint axis 7 while passing through the gap 8.