To prevent a scraper from being damaged when a heavy object dropping from an upper side onto a conveying conveyer strikes the scraper, by contriving a shape of the scraper.

This conveying conveyer 10 for conveying an object such as dust, for example, from a mounting place to a prescribed place is provided with a bottom plate 11 ranging from the mounting place to the prescribed place, and a ladder-like conveyer 12 for moving the object on the bottom plate 11 from the mounting place up to the prescribed place, and the scraper 14 for moving the object drivenly and having a polygonal cross-sectional shape is provided in the ladder-like conveyer 12. The strength of the scraper 14 is enhanced by this constitution, and the scraper is thereby prevented from being damaged by the heavy object dropping from the upper side, without impairing a driven motion function.