Auxiliary device and method for ship lashing bridge transportation

The invention relates to an auxiliary device and method for ship lashing bridge transportation, the auxiliary device comprises a supporting plate, a reinforcing plate, a baffle, a shelving platform and a reinforcing rib plate, the upper end of the baffle is provided with a concave groove, and the lower end face of the baffle is welded to the two ends of a portal; the shelving platform is mounted on the concave groove of the baffle, and a large square tube or a small square tube of a binding bridge is placed on the shelving platform; the side face of the supporting plate is perpendicularly connected with the baffle, and the bottom of the supporting plate is welded to the door frame. The lower end face of the reinforcing plate is connected with the upper end face of the supporting plate, and the side face of the reinforcing plate is perpendicularly connected with the baffle. The reinforcing rib plates are perpendicularly connected with the side faces of the upper portions of the two baffles correspondingly. The