A feeding device for a flexible canvas or draper harvester characterized by upper beam (8) linked to a lower front beam (10) and joined by side covers (11) forming a frame, integral with a lateral stud supports (12) and a central stud supports (13) associated with a central lower beam (9) cut into three sections； the central stud supports (13) are integral with the anchors of the coupling device (15) and with the flexible body supports (14)； the central stud supports (13) and lateral stud supports (12) are linked to the conveyor belts with flexible canvases (3, 4, 5 and 6), forming a central body and two laterals with space to accommodate a double row.
