STRIP DISC SUBSURFACE CHISEL CULTIVATOR Russian patent published in 2011 - IPC A01B49/02 

FIELD: agriculture.

SUBSTANCE: tool comprises a hitch tongue and a frame with several fixed transverse bars. There are movable fixed vertical stands with axes at the ends and spherical discs installed on axes with the possibility of rotation, all mounted on bars. Discs have a controlled angle of attack and are arranged on transverse bars frontally along grip width. Disks on the first and second transverse bars are arranged with concave or convex sides accordingly in opposite directions and form the first paired row of discs. Each subsequent disc is displaced in transverse direction relative to the previous disc towards non-cultivated strip of soil by value equal to the quotient from division of a disc-to-disc distance by a number of transverse bars. Discs are inclined towards a vertical plane. The tool has adjustable front and rear wheels, besides, the front ones are only used in working mode. Front wheels, vertical stands with axes at the ends and spherical discs installed on axes with the possibility of rotation are arranged as detachable. Disc-to-disc distances at each transverse bar are equal to 400-640 mm. There are fixed pairs of brackets with holes between sliding bearings of vertical stands in spherical discs on each second transverse bar of paired rows. Paraplough stands are installed in holes of brackets, and at their lower ends there are fixed channel shapers or cultivating elements. Length of paraplough stands is such that it ensures formation of slots and channels or cultivated strips in non-cultivated soil for the depth from 250 to 500 mm. Variation of working elements operation depth may be controlled by an angle of attack, front and rear wheels, and also by several pairs of holes in paraplough stands with an interval of 50 mm.

EFFECT: invention makes it possible to improve air-water exchange of topsoil and subsurface by provision of simultaneous cultivation of topsoil and damage of soil shoe.

3 cl, 8 dwg