Abstract: A U-frame wagon formed with two parallel longitudinal beams (2, 3) and a front transverse beam (4) interconnecting the two longitudinal beams. Two wheel units (6, 7, 8, 9) are attached to the rear ends of the longitudinal beams for supporting the rear parts of the beams, while the transverse beam (4) is coupled (20) to and supported by a trailing unit. Three connection devices (13, 16) cooperate with complementary shaped connection members of a container platform. Above the wheel units are mudguards, which also serve as lifting devices (10) and these are of rigid construction and extend parallel to the longitudinal frame members. The lifting devices are pivotable around shafts (12) positioned before the shafts of the wheel units, while the connection devices (13) are behind the shafts of the wheel units.