TWO-DISK SHANK Russian patent published in 2004 - IPC

FIELD: agricultural engineering, in particular, drilling equipment.

SUBSTANCE: shank has casing, two disks, scraper, seed directing device, seed guide, pressure bar equipped with tie-rod having guide mounted in tie-rod opening by means of pin. Bushing, case and compression spring are movably positioned on outer surface of guide. Holder is screwed on one side and second guide is screwed on other side of threaded parts of tie-rod. Bracket is pivotally connected to movable bracket composed of two shaped plates joined with one another by two ribs, immovable bushing and two replaceable bushings. Movable bracket is pivotally attached by pin and splint to lower part of pressure bar and immovably attached to V-shaped share casing. Tubular seed guide immovably fixed at casing end is equipped with curved seed directing device and clip. Curved scrapers are immovably fixed in clip opening. Pins with right-hand and left-hand thread are screwed at an angle to one another into shank casing hub. Shafts are provided with screw slot, on which restricting sleeve with collar, left-hand thread bearing and right-hand thread nut are positioned. Such construction allows impacts to be absorbed during advancement of drill.

EFFECT: increased efficiency owing to uniform deepening of shanks, enhanced reliability in operation and simplified maintenance.

4 cl, 3 dwg