Metal safety barrier with a fusible mechanism for the screw connection that connects its horizontal fences and vertical support posts, which is used on the margins and mediums of roads for vehicle containment

摘要

Metal safety barrier for use on the margins and medians of roads for containment of vehicles comprising at least one horizontal fence (1) and a series of vertical posts (2), said fence (1) having a series of holes (13) , each of said posts (2) having a hole (14), said barrier being the type that contains side impacts of vehicles with a controlled decoupling of fence (1) and post (2) according to a preset decoupling threshold value, characterized because said barrier comprises a screwed connection mechanism of fence (1) and post (2), said joining mechanism comprising a screwed fuse (5), said screw (5) having a rod (10), said rod having (10) ) a zone (11) of lower mechanical resistance (11, 12, 12 ', 12 ") than the rest of the rod (10), said zone of lower mechanical resistance being located at a certain distance from the screw head (9) and in a position such that, once the screwed connection (3) is executed, said section that has lower mechanical resistance (11, 12, 12 ', 12 ") is placed, both, inside the hole (13) of the fence (1) and the hole (14) of the post (2).