SUSPENSION MECHANISM FOR GRAIN HARVEST CONCAVE Russian patent published in 2023 - IPC A01D41/12 A01F12/28 

FIELD: agriculture.

SUBSTANCE: invention relates to agriculture. The concave suspension mechanism of the combine harvester comprises a concave (2) installed under the threshing drum (3), adjustable concave suspensions (7-10) (2) pivotally connected to levers (5, 11) mounted on the torsion shaft (4), and drive (12), pivotally connected to the torsion shaft (4). From the outside, fingers (16) are installed in the longitudinal grooves of the frame (1) of the thresher, with brackets (17) mounted on them. Plugs (13-15) are installed between the concave (2) and the frame (1) at the attachment points of the adjustable hangers (7-10). The pins (16) are simultaneously connected to the front and rear suspensions (7, 9, 10) of the concave (2) by adjusting bolts (18). Suspensions (7, 9, 10) are adjusted using coupling nuts. The concave (2) is made of two parts, suspended on the front and rear suspensions (7, 9, 10) to the mechanism of its regulation and pivotally connected to each other by pins (16), which are attached to the middle suspensions (9) of the regulation mechanism.

EFFECT: reduction of labor intensity of operations of mounting and dismantling of elements of fastening of suspensions to the concave, as well as simplification of the design due to reduction of parts and threaded connections.

8 cl, 4 dwg