Semi trailer for rolling in rail and on road, has road axles and rail axles that are lowered by pneumatic system while rolling short and long distances using road tractor and train, respectively

摘要

The trailer (4) has road axles (9) that are lowered and rail axles (8) that are raised by a pneumatic system while rolling short distances using a road tractor (3) on road. The rail axles are lowered and road axles are raised by the system for rolling in rail convoys during long journey. A light rail coupling system is used to couple a vehicle such as a train, with the trailer that is equipped with double axle for road and rail rolling.