ASSEMBLY UNIT OF THE WORKING BODY OF THE CULTIVATOR Russian patent published in 2022 - IPC A01B61/04 

FIELD: agriculture.

SUBSTANCE: invention relates to agriculture. The attachment unit of the cultivator working body contains a frame (1), a rack (2) with a shank (3) and a nut (4), the surface of which is mated with a hole made in the frame (1). The mating surfaces are made in the form of hemispheres (5). A support washer (6) is attached to the rack (1). Between the support washer (6) and the frame (1), external and internal cylindrical compression springs (7 and 8) with the opposite direction of winding of turns are installed concentrically located on their common axis of symmetry with the shank (3). The outer and inner cylindrical springs (7 and 8) are made with respect to their torsion or untwisting moments of equal rigidity due to the implementation of the outer cylindrical compression spring (7) from a bar with a larger diameter than the diameter of the bar of the inner cylindrical compression spring (8). The frame (1) and the support washer (6) have holes (9 and 10) centered on the average diameters of the annular contact surfaces of the frame (1) and the support washer (6) with the outermost turns of the outer and inner cylindrical compression springs (7 and 8). The diameters of the holes (9 and 10) are larger by 0.5 - 1 mm than the diameters of the bars of the corresponding cylindrical compression springs (7 and 8). The axes of symmetry of the holes (9 and 10) are parallel to the axes of symmetry of the cylindrical compression springs (9 and 10). The outer and inner cylindrical compression springs (7 and 8) have the ends of the bars (11 and 12) bent parallel to their axis of symmetry, inserted into the holes corresponding to their bar diameters (9 and 10). The average diameter of the outer spring (7) D₁ is , where d₂ and d₁ are the wire diameters of the inner and outer springs (7 and 8); D₂ and D₁ are the average diameters of the inner and outer springs (7 and 8).

EFFECT: increased reliability of work of tillage implements for inter-row and steam cultivation, processing and care of plants in fields littered with stones and vegetation, heavy, medium and light soils.

1 cl, 1 dwg