Foldable railing device for use on mobile lifting work platform, has sliding pivot receiving locking system that is irreversible when device is in selected position, and intermediate stringer receiving another sliding pivot receiving braces

摘要

The device has a sliding pivot (8) receiving a locking system (12) that is irreversible when the device is in a selected position. An intermediate stringer (2) receives another sliding pivot (7). The latter sliding pivot receives an upper brace (4) and a lower brace (5). The locking system is unbolted at time of voluntary action of a user. An upper stringer (1) and the intermediate stringer are arranged continuously over entire length of a railing. A railing rising adaptation mechanism allows adaptation of length of the railing independent of the upper and lower braces.