PURPOSE: To shorten a carrying time by supporting wheels on the other side with the other side of the end part of a conveyor supporting wheels on one side of an automobile, providing the end part of a carrying rail in parallel with the other side of the conveyor end part, and supporting wheels on the other side with the wheel supporting parts of a running body.

CONSTITUTION: On the other side of the terminal end part of a slat conveyor 12 having an endless rotational moving body 6, a running body 9 supporting wheels 4b, 5b on the other side of an automobile 1, guided with a carrying rail 8 along a carrying route 2, and provided with a front wheel supporting plate 28 and a rear wheel supporting plate 29 is provided. The beginning end part of the carrying rail 8 is arranged in parallel with the other side of the terminal end part of the slat conveyor 12, and the terminal end part of the carrying rail 8 is arranged in parallel with the other side of the beginning end part of the slat conveyor 13. When the slat conveyer 12 is driven, the wheels 4a, 5a are carried by the endless rotational moving body 6, and succeedingly carried by the running body 9. In this way the slat conveyors 12, 13 and the running body 9 are jointly used so as to improve carrying speed.