This Application for a Patent of Invention refers to an implement intended for harvesting and/or gathering farm produce, that is used together with a self-propelled agricultural machine, more specifically a grain harvester, in order to provide driving power for its crop processing systems. The invention is noteworthy for the fact that a top roller (11) is positioned at the rear end of each conveyor belt (1) whereby, internally and concentrically thereto, the supports (9) move in a continuous rotating movement with the slats (10)； the conveyor belt (1) has electronic means for adjusting the speeds of the machine and the belts, varying electronically between these magnitudes according to the proportionality parameter； in addition to also regulating the height of the conveyor belt (1B) through electronic means and a pivoting device (26)； the set of conveyor belts (1) may also be articulated into a transportation position.
