COMBINE HARVESTER CONCAVE ADJUSTMENT MECHANISM Russian patent published in 2024 - IPC A01F12/28 A01D41/12 

FIELD: agriculture; machine building.

SUBSTANCE: combine harvester concave adjustment mechanism comprises concave (1) installed under threshing drum (2); adjustable front and rear tie-rods (7 and 8) of concave (1), pivotally connected to levers (4 and 5) installed on shaft of torsion (3) and serving to transfer force from levers (4 and 5) of torsion (3) to concave (1); lever (6) with cam (16) fixed on shaft of torsion (3); electric mechanism (9), pivotally connected through the lever with shaft of torsion (3), and the pawl engaging with cam (16); bracket (12) pivotally connected to lever (6) of shaft of torsion (3); lever (14) mounted on bracket (12); rods (13) connected to lever (14); solenoid (15) installed on bracket (12), and axes (17), fixing lever (14) and rods (13). Bracket (12) is made welded, consisting of two sidewalls located at distance from each other, equal to value of width of lever (6) of shaft of torsion (3), and links connecting sidewalls to each other. Lever (6) of shaft of torsion (3) freely turns on axis (19) between inner walls of side frames of bracket (12).

EFFECT: higher reliability of concave adjustment mechanism, exclusion of operator’s physical effort, as well as elimination of injuries during emergency release of concave.

4 cl, 3 dwg