Mechanism for the opening and closing of rolling-up doors for vehicles

摘要

Of the type installed in closed boxes, trailers or semi-trailers, comprising a rolling-up door (2), that rolls on a roller (3), with driving means (4) of said rolling-up door (2) that raise it and lower it, guides (5), where said rolling-up door (2) circulates, with said guides (5) lying opposite one another in the raising and lowering movements of the rolling-up door (2).