Harvesting system based on a platform for agricultural harvesters, and platform for agricultural harvesters

A header for agricultural harvesters, the header comprising:

• a header frame configured to be removably coupled to a front end of an agricultural harvester;
• a base cutter assembly coupled to the header frame, the base cutter assembly comprising at least one cutting blade and a drive assembly configured to rotationally drive the at least one cutting blade;
• a linkage assembly coupling the base cutter assembly to the header frame such that the base cutter assembly is movable relative to the header frame in both a first direction and a second direction opposite the first direction;
• and
• an actuator coupled between the header frame and the base cutter assembly, the actuator being configured to allow the base cutter assembly to float relative to the header frame in both the first direction and the second direction.