THRESHING AND SEPARATING DEVICE OF GRAIN HARVESTER Russian patent published in 2023 - IPC A01D41/12 A01F12/28 

FIELD: agriculture.

SUBSTANCE: invention relates to agriculture. The threshing and separating device of the combine harvester contains a frame (1), in which a threshing drum (2) with a concave (3) installed under it, and a beater-distributor (4) are pivotally mounted. In the frame (1) transversely to the longitudinal axis of the harvester, two threshing and separating rotors (5) are pivotally mounted, rotating in opposite directions relative to each other. Decks (6 and 7) are installed under the threshing and separating rotors (5). The threshing and separating device of the combine harvester contains shields and a mechanism for changing the position of the decks (6) of the threshing part (B) of the rotors (5), consisting of a system of levers pivotally connected to each other. The shields are pivotally mounted on the sidewalls located along the edges and in the central part of the deck frame (6), and on the ribs located along the sidewalls and hinged on the central sidewalls of the deck frame (6). The guards are fixed on the frame of the deck (6) with the help of axles and on the ribs with the help of bushings, washers, bolts and nuts. The ribs are pivotally connected to the lever through the rods. The lever connected to the rods is pivotally mounted on the brackets of the rotor casing (5). On the lever, with the help of cylindrical hinges, the drive is fixed at one end, and the other end of the drive is fixed on the bracket of the rotor casing (5). The brackets are rigidly fixed on the casing of the rotors.

EFFECT: increase in productivity of the combine harvester, reduction of crushing and injury of grain, decrease in the amount of unthreshed mass passing through the deck cells, increase in the main working time due to the exclusion of mounting and dismantling of dampers, as well as providing the possibility of quick adjustment of the combine harvester when harvesting various crops.

5 cl, 5 dwg