THRESHING DEVICE OF GRAIN HARVESTER FOR HARVESTING AWNED CROPS Russian patent published in 2024 - IPC A01F12/18 A01D41/12 

FIELD: agriculture; machine building.

SUBSTANCE: invention relates to agricultural machine building. Threshing device comprises threshing drum hinged between frame sidewalls on ball bearings, and concave located under threshing drum and configured to adjust its position in radial direction during threshing drum rotation. Concave includes a welded frame formed by sidewalls, guides installed on the inner surface of the sidewalls in the front part of the concave frame, two detachable sections mounted on guides, flaps pivotally mounted in the lead-in part of the concave, and a tie-rod connecting the flaps. Device additionally comprises longitudinal ribs located parallel to sidewalls of frame at equal distance from each other, transverse planks located perpendicular to frame sidewalls, rods installed in holes of transverse planks, shield installed on the surface of the front transverse plank, pins welded to the surface of the longitudinal rib, pre-aligned with the holes made on the longitudinal rib, lever pivotally fixed on concave frame pin, intermediate rod pivotally connected to the lever, axles rigidly fixed on flaps, and a drive pivotally mounted on the pin. Transverse planks are installed with spikes in rectangular holes of frame sidewalls of concave and are rigidly fixed on frame sidewalls. Longitudinal ribs are aligned with the cutouts of the transverse planks by means of cutouts and are rigidly fixed on the transverse planks, thereby determining the relative position of the transverse planks and longitudinal ribs relative to each other.

EFFECT: higher efficiency of combine harvester and main working time, as well as automated adjustment of flaps position during harvesting of various crops.

9 cl, 5 dwg