Protective device in the form of a barrier

摘要

The railing which is placed on a working (2) is constituted by two supports (3) which are placed perpendicular to the plane of the working and attached to it by fixings (4). A rail (5) ensures the rigidity of the supports. The fixing has a hole in which one end (13) of the support penetrates and which after rotation cannot exit this opening and become detached from the fixing.