TILLAGE MACHINE AND UNIT FOR ATTACHMENT OF TINE TO SPHERICAL DISK Russian patent published in 2007 - IPC A01B49/02 A01B23/06 

FIELD: agricultural engineering, in particular, presowing soil tillage for cultivation of cereal, industrial, fodder, garden, berry and vegetable crops.

SUBSTANCE: tillage machine has frame, spherical disks mounted on frame in rows with the use of tines so that that their angle of attack may be adjusted, and roller. Bearing casing of each disk is positioned at its concave side, and tine is mounted on bearing casing. Each tine has rectilinear part and part bent toward disk concavity. Rectilinear part of tine is fixed on frame by means of sleeve whose lower part is cantilevered relative to frame, and bent part of tine is connected to tine bearing casing by means of attachment unit. Angle between axes of rectilinear and bent parts of tines is defined from formula β=arctg (D/2l)-β₁, where D is diameter of disk, l is length of tine bent part, β1 is angle of inclination of disk to tine. Axis of rectilinear part of tine is arranged in single plane with lower point of disk edge. Roller is positioned at an angle to advancement direction and is pivotally mounted on frame so as to be readily dismantled, and axes of its pins are extending in horizontal plane. Each disk has detachable soil deforming devices mounted on frame. Said devices are fixed for rotation on tine and are made in the form of rods or needle disks which have diameter of about a quarter of diameter of spherical disk and are mounted on tine so as to be adjusted in horizontal and vertical plane relative to spherical disk. Sleeves for attachment of tines on frame comprise sealing members and have, in their upper part located above frame, washer and bolt for fixing tine relative to frame. Replaceable ring is positioned on disk pin for preventing pin from wear. Unit for attachment of tine to spherical disk comprises bearing casing positioned at concave side of spherical disk. Two brackets are rigidly fixed on bearing casing in spaced apart relation for accommodation of tine within said space. Lower end of tine abuts against bearing casing. Brackets and tine have fastening members for enabling rigid fixing of tine relative to disk to eliminate rotation thereof in vertical plane.

EFFECT: wider operational capabilities of machine, increased tillage quality and enhanced reliability in operation.

7 cl, 8 dwg