COMBINE HARVESTER FOR HARVESTING ROOTS AND TUBERS Russian patent published in 2017 - IPC A01D17/00 

FIELD: agriculture.

SUBSTANCE: combine harvester comprises an undercutting share (3), separating conveyors, lump-crushing drums. In the front part of the combine harvester, on a frame (1), disc cutters (2) are installed, arranged in the row spacings of root and tuber crop plantings. The diameters of the disc cutters (2) are taken from the condition of cutting the furrow slice in the vertical plane to the depth of placement of root and tuber crops. The undercutting share (3) is interfaced with the lower rod conveyor (4) having the motion speed V₁ and hinged on the frame of the combine harvester. An upper conveyor (5) with the function of a lump-crushing drum is installed above the lower rod conveyor (4). The motion speed of the upper conveyor V₂ is less than the motion speed V₁. The undercutting share (3) is made wedge-shaped with the wedge blade angle of 40…45°. The disc cutters (2) are made combined, consisting of conical and spherical parts and installed at an angle to the movement direction. The conical side of the cutter is a part of a truncated cone and is interfaced to the spherical part. The outer front edge of the conical part is installed in the movement direction of the combine harvester. The upper conveyor (5) between lump-crushing rolls (10) has brush extractors (24) of crushed soil mass. The disc cutters (2) are mounted with the possibility of free rotation on a cranked axle (20) by means of sliding bearings, and are fixed with nuts.

EFFECT: reducing draft resistance, complete separation of roots and tubers from the soil, increased harvesting productivity.

3 dwg