GRAIN HARVESTER THRESHING-SEPARATING DEVICE LEAD-IN PART Russian patent published in 2024 - IPC A01F12/00 A01D41/00 

FIELD: agricultural machine building.

SUBSTANCE: invention is intended for use in threshing devices with rotating working elements located along the direction of threshing mass supply. Lead-in part of threshing-separating device of combine harvester comprises front beam 4, lead-in part 12 of rotor 6, the latter hinged on front beam 4 and made in the form of truncated cone, on small base of which, on the side of inclined chamber 1, a cross is fixed, and on the side surface there are brackets. At that, straps, turns, transporting ribs 11 are attached to the crosspiece and brackets by means of a bolt joint. Axis of rotation of the rotor is perpendicular to front beam 4. In the central part of transition section 5 there is casing 8, and in lead-in part 12 of rotor 6—intermediate turns, note here that casing 8 is arranged coaxially with rotor 6 lead-in section while transporting ribs are arranged on casing inner surface along helical line. Casing 8 is made of cylindrical shape and is rigidly attached to elements forming transition section 5. Transporting ribs 11 rigidly fixed on the cylindrical part of casing 8, are located at an angle α₁ to the axis of cylindrical casing 8 of transition section 5 and are directed towards the rotation of rotor 6. On the surface of the truncated cone of the rotor there are two blades formed by a strap, front and rear turns.

EFFECT: threshing-separating device lead-in part provides simplification of transition section design, reduction of its wear and, as a result, increase of combine harvester service life.

9 cl, 7 dwg