To mechanically open and close a conveyed object outlet of a conveyed object holding bucket mounted on a conveying carrier so that it can be freely loaded and unloaded.

In a composition of the conveying device using the conveying carrier 1 mounted with the conveyed object holding bucket 5 so that it can be freely loaded and unloaded, opening and closing lids 9a and 9b opening and closing the conveyed object outlet 8 are provided on the bucket 5, opening and closing operation parts (cam followers 16a and 16b) are provided on the opening and closing lids 9a and 9b, and opening and closing means 10A and 10B opening and closing the opening and closing lids 9a and 9b via the opening and closing operation parts (the cam followers 16a and 16b) of the opening and closing lids 9a and 9b of the bucket 5 loaded in a predetermined position are provided on the conveying carrier 1 side.