Secondary carrying and transporting device suitable for long pipeline

The utility model relates to the technical field of long pipeline transportation, in particular to a secondary carrying and transporting device suitable for a long pipeline. The upper portion of the trailer wagon is provided with a wagon front top plate, the wagon front top plate is provided with a front anti-collision support and a first side anti-collision support on the side face of the trailer wagon, and the bottom of the trailer wagon is provided with an anti-skid anti-collision bottom plate. The side face of the traction trolley is opened and put down through first fixing buckles of the first handrail and the second handrail, and the pipeline is assembled and disassembled. The first fixing rope is arranged at the bottom of the traction trolley to fix the ends of the pipelines, the traction trolley, the middle supporting trolleys and the tail supporting trolley are included, in the transportation process, the number of the middle supporting trolleys can be determined according to the lengths of the pipel