A flexible platform jointed to a conveyor belt for a harvesting, spinning, and chopping machine which improves the functioning of all the platforms width, and eliminating deficiencies related to material, cereal or grain transport, with a transporting auger in all its width, obtaining a more homogeneous and smoother material flow. The platform includes two conveyor belts (1,2) adjacent and parallel to each other. The conveyor belt (1) is movable and flexible and is located adjacent to the cutting blades. The conveyor belts (1,2) are located between central corresponding augers (3, 4) and retractile central fingers (5), facing the feeder.