TOOL FOR SURFACE TILLAGE Russian patent published in 2015 - IPC A01B33/02 

FIELD: agriculture.

SUBSTANCE: tool comprises a frame, drive rotary working bodies arranged in two rows, a bevel gear. On the output shafts of the gear the removable sprockets are mounted. The removable sprockets are connected by a chain with the removable sprockets on the shafts of the rotary working bodies. The circumferential speed of the rotary working bodies of the first row is 1.03-1.1 of the speed of the tractor, of the second row is 1.05-1.15. The rows of the working bodies are installed perpendicular to the direction of motion of the tool with location in a checkerboard pattern. The working bodies are made in the form of wheel spiders. The needles of the wheel spiders are bent along the evolvent of circle. On the convex side of the needles of the working bodies of the first row in the tangent planes the chisel elements in the form of an isosceles triangle are fixed. The base of the triangle is parallel to the axis of the wheel spider. The top of the triangle is directed towards the end of the needles. The distance from the top of the chisel elements to the ends of the needles is equal to half the depth of processing. On the needles of the second row of the working bodies the chisel elements in the form of an isosceles triangle are fixed. The top of the triangles is located at the end of the needle. The chisel elements of the second row of the working bodies are rotated relative to the needles and form an acute angle with the axis of the wheel spiders. The needles are alternately turned about the axis of the wheel spider in opposite directions.

EFFECT: solution is aimed at reducing energy consumptions and increase in quality of the surface treatment of soil.

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