Auxiliary processing system

1. An agricultural vehicle, comprising:

a chassis;

a threshing and separating mechanism supported by the chassis and configured for threshing and separating a crop material;

a cleaning system positioned downstream of the threshing and separating mechanism in a direction of crop material flow; and

an auxiliary processing system positioned downstream of the threshing and separating mechanism in the direction of crop material flow and configured for processing crop material exiting from the threshing and separating mechanism and for rethreshing the crop material from the cleaning system, the auxiliary processing system having an inlet and an outlet, the auxiliary processing system including:

a discharge chopper having an end and a first direction of rotation about an axis of rotation; and

at least one rethreshing element coaxially aligned with the discharge chopper and adjacent to the end of the discharge chopper and having a second direction of rotation opposite to the first direction of rotation of the discharge chopper.

2. The agricultural vehicle of claim 1 , wherein said discharge chopper has a first rotational speed and said at least one rethreshing element has a second rotational speed that is independent from the first rotational speed of the discharge chopper.

3. The agricultural vehicle of claim 1 , further including a residue system for dispensing a material other than grain out of the combine, and wherein said inlet of the auxiliary processing system receives crop material exiting the threshing and separating mechanism and receives crop material after processing through the cleaning system, and said outlet discharges the material other than grain onto the residue system.

4. The agricultural vehicle of claim 1 , wherein said auxiliary processing system further includes a perforated floor panel positioned underneath said discharge chopper.

5. The agricultural vehicle of claim 1 , wherein said auxiliary processing system further includes at least one concave at least partially surrounding said at least one rethreshing element.

6. The agricultural vehicle of claim 1 , wherein said at least one rethreshing element is in the form of a rethreshing cylinder.

7. The agricultural vehicle of claim 1 , wherein said auxiliary processing system extends transversely to a direction of travel of the agricultural vehicle.

8. The agricultural vehicle of claim 1 , wherein said at least one rethreshing element is in the form of a pair of rethreshing elements adjacent to each lateral end of the discharge chopper and coaxially aligned with the discharge chopper.

9. An agricultural vehicle, comprising:

a chassis;

a threshing and separating mechanism supported by the chassis and configured for threshing and separating a crop material;

a cleaning system positioned downstream of the threshing and separating mechanism in a direction of crop material flow; and

an auxiliary processing system positioned downstream of the threshing and separating mechanism in the direction of crop material flow and configured for rethreshing the crop material, the auxiliary processing system having an inlet and an outlet, the auxiliary processing system including:

a discharge chopper having an end and a first direction of rotation about an axis of rotation; and

at least one rethreshing element coaxially aligned with the discharge chopper and adjacent to the end of the discharge chopper the at least one rethreshing element is in the form of a rethreshing cylinder, and the at least one rethreshing element and the discharge chopper are coupled to and driven by a common shaft, and the at least one rethreshing element having a second direction of rotation which is the same as the first direction of rotation of the discharge chopper.

10. The agricultural vehicle of claim 9 , wherein said discharge chopper has a first rotational speed and said at least one rethreshing element has a second rotational speed that is linked to the first rotational speed of the discharge chopper.

11. The agricultural vehicle of claim 9 , further including a residue system for dispensing a material other than grain out of the combine, and wherein said inlet of the auxiliary processing system receives crop material exiting the threshing and separating mechanism and receives crop material after processing through the cleaning system, and said outlet discharges the material other than grain onto the residue system.

12. The agricultural vehicle of claim 9 , wherein said auxiliary processing system further includes a perforated floor panel positioned underneath said discharge chopper.

13. The agricultural vehicle of claim 9 , wherein said auxiliary processing system further includes at least one concave at least partially surrounding said at least one rethreshing element.

14. The agricultural vehicle of claim 9 , wherein said at least one rethreshing element is in the form of a pair of rethreshing elements adjacent to each lateral end of the discharge chopper and coaxially aligned with the discharge chopper.

15. A method of operating an agricultural vehicle having a chassis, a threshing and separating mechanism, and a cleaning system, said method comprising the steps of:

providing an auxiliary processing system configured for rethreshing a crop material, the auxiliary processing system having an inlet and an outlet, the auxiliary processing system including a discharge chopper having an end and a first direction of rotation about an axis of rotation, and at least one rethreshing element coaxially aligned with the discharge chopper and adjacent to the end of the discharge chopper and having a second direction of rotation, and the at least one rethreshing element is in the form of a rethreshing cylinder;

processing crop material, by the discharge chopper, which has entered the inlet of the auxiliary processing system after passing through the threshing and separating mechanism;

rethreshing a plurality of tailings, by said at least one rethreshing element, which has entered the inlet of the auxiliary processing system after passing through the cleaning system; and

discharging a material other than grain out through the outlet of the auxiliary processing system.

16. The method of claim 15 , wherein the second direction of rotation of said at least one rethreshing element is opposite to the first direction of rotation of the discharge chopper.

17. The method of claim 15 , wherein the second direction of rotation of said at least one rethreshing element is the same as the first direction of rotation of the discharge chopper.

18. The method of claim 15 , wherein said at least one rethreshing element is in the form of a pair of rethreshing elements adjacent to each lateral end of the discharge chopper and coaxially aligned with the discharge chopper.