To easily and securely fix a loaded automobile on a platform of a carrier car in a short time without damaging, and to transport the automobile in a stable state.

A square shaft 2 is connected to a rear end of a shaft 1 extending along right and left edges of a platform of a carrier car to form a shaft core. A square pipe 3 is fitted with a front end of the shaft 1, and square attaching tools 4, 5 are slidably fitted with the square shaft 2 and the square pipe 3. In fixing arms integrally provided with the square attaching tools 4, 5, positioning pins 8, 9 are inserted so as to extend/retract to fix. A pistons of a oil compressor is attached to the each front parts of the shaft 1 and the square pipe 3 through driving arms, and severally driven.