A transport vehicle for load-carrying purposes and consisting of a power vehicle and a trailer hingedly connected thereto, said trailer having a wheel-supported U-shaped outer stationary frame open to the rear and a U-shaped inner frame open to the rear and supported for vertical movements within said outer frame, said vehicle being distinguished in that a raising and carrying means for the inner frame in the form of a pressure fluid operated power cylinder is mounted at the rear end of each of the limbs of the outer frame as well as centrally at the frontal transverse portion of said outer frame.