COUPLING DEVICE Russian patent published in 2020 - IPC B60D1/167 B60D1/30 A01B59/41 A01B3/00 B62D51/04 

FIELD: agriculture; machine building.

SUBSTANCE: invention relates to the agricultural machine building. Coupling device comprises connecting bracket with holes on bracket flanges, which by its wall is rigidly fixed on traction unit, central bar, at the first end of which there is a lug rigidly fixed with pivot pin in bracket holes. On the second end of the bar there are elements for attachment of the plow post and a vertical cylinder hingedly fixed, having the possibility of rotation relative to its axis and having a longitudinal hole in which the plow post is fixed. One con-rod is rigidly attached to the cylinder by one end, the other end of which is pivotally connected to the first end of the yoke, which by its second end is pivotally connected to the bracket at a distance in transverse direction from the hole of the bracket for attachment of the eye of the central bar.

EFFECT: automatic balancing of plow during plowing is provided.

1 cl, 2 dwg