Patent EA-001949-B1 (EA)
Title: Machine for mowing and chopping maize and other similar stalk-like harvested crops
Inventor: WUBBELS RICHARD
IPC: A01D45/02
Filed: 1999-11-05
Abstract: 1. A machine for mowing and chopping maize and other similar stalk-like harvested crops has a plurality of feeding and mowing drums rotating about vertical axis and provided with protruding guide toothed edges, said drums are disposed laterally on either side of a vertical, longitudinal median plane of the machine in front of a chopper with a receiving cut, harvested crops duct in the middle, the duct is limited from top and bottom by two spaced insertion rollers and on either side is limited by rotating about vertical axis, feeding cut, harvested crops and laterally spaced two conveying drums, characterized in that each of two transverse conveying drum (16) is divided laterally by its vertical axis to the upper and bottom sections (23, 24) each having its own axis of rotation (25, 26) and both axes (25, 26) of rotation of are shifted laterally respective each other so that the upper section (24) of the drum can be adopted to a working position, in which the periphery of heads (30) of its guide toothed edges (28) is at a greater distance from the center line of the conveying duct coinciding with the vertical longitudinal median plane (13) of the machine (4) compared to the periphery of the head (29) of the guide toothed edges (27) of the bottom section of the machine. 2. The machine as claimed in claim 1, characterized in that the height of the upper section (24) of the drum is about three times greater than that of the bottom section (23) of the drum. 3. The machine as claimed in claim 1 or 2, characterized in that the diameter of the upper section (24) of the drum is about half diameter than that of the bottom section (23)of the drum. 4. The machine as claimed in any of claims 1 to 3, characterized in that the diameter of the heads periphery of the guide toothed edges (27) of the bottom section (23) of the drum is about 1,2-1,6 to that of the heads periphery of the guide toothed edges (28) of the upper section (24) of the drum. 5. The machine as claimed in claim 4, characterized in that both sections (23, 24) are shifted laterally so that the heads peripheries (27, 28) of their guide toothed edges (27, 28) have a lateral displacement in the working position only at a portion facing the center line of the conveying duct, wherein the heads peripheries, facing opposite the conveying duct, substantially align. 6. The machine as claimed in any of claims 1 to 5, characterized in that both upper sections (24) of the drum have the greatest distance from the center line of the conveying duct in the position in which the axes of their rotation (26) and both axes of rotation (25) of the bottom sections (23) of the drum lie in a common lateral plane relative to the center line of the conveying duct. 7. The machine as claimed in any of claims 1 to 6, characterized in that the bottom section (23) of the drum is fixed rigidly and the upper section (24) of the drum is propped by feeding crops from the main position overcoming a spring effort to the insertion rollers (5, 6) turning around the rotation point (31), which aligns with the axis of rotation (25) of the bottom section (23) of the drum. 8. The machine as claimed in claim 7, characterized in that the angle of rotation of the upper section (24) towards the bottom section of the drum is limited by ( 180 degree , preferably by 90 degree . 9. The machine as claimed in any of claims 1 to 8, characterized in that both sections (22, 24) are arranged enabling to rotate in a common reduction gear (36) driven from the main drive of the machine. 10. The machine as claimed in claim 9, characterized in that the reduction gear (36) comprises a support reduction gear (40), which determines a transverse displacement of both sections (23, 24) of the drum with their axes of rotation (25, 26). 11. The machine as claimed in claim 10, characterized in that the that both sections (23, 24) of the drum are driven from the support reduction gear (40) with the same peripheral speed. 12. The machine as claimed in any of claims 1 to 11, characterized in that both conveying drums (16) are inclined conveying drums, overlapping a vertical gap between the working plane of the mowing and the chopping drums (10) and the horizontal plane of the conveying duct with an arrangement and shape for receiving crops from the mowing and chopping drums (10) and their feed to the conveying duct (17).