Direction-changing rail for steel structure roof transport cart

The utility model relates to steel structure roof construction, in particular to a rail for a steel structure roof transport cart. A direction-changing rail for the steel structure roof transport cart comprises a rail body which is located at an intersection, the lower portion of the rail body which is located at the intersection is connected by two cross connection section bars, the cross connection section bars are connected by a short section bar, a steel tube is welded below the middle of the short section bar, a fixed base is further arranged on the lower portion of the direction-changing rail body, an outer sleeve of which the diameter is larger than the diameter of the steel tube is arranged in the center of the base, and the steel tube is inserted in the outer sleeve. According to the rail for the steel structure roof transport cart, the transport cart can freely rotate on the rotating rail, continuity of the transport cart can be guaranteed through rotation in a 90-degree region, secondary transport