PURPOSE: To perform continuous conveyance of a cargo as the cargo is guided even when the length in a conveying direction of a cargo conveyed by a cargo conveying device is short.

CONSTITUTION: Guide members 4 are each comprised of a starting end side inclination guide member 2 which is inclined so that a cargo is displaced inward toward the front from the starting end in a conveying direction of a cargo and a linear guide member 3 extending from the front end of the inclination guide member 2 on the starting side toward a cargo conveying direction. These members 4 are respectively fixed to the upper parts of side frames 1 on both sides of a cargo conveying device. Vertical type pulleys 6 and 7 rotated by means of a drive device are mounted on the two end parts of each side frame 1. The inside part of an endless guide belt 8 run around the vertical type pulleys 6 and 7 is brought into contact with the guide member 4.