SUBSOIL BROADCAST SEEDING SHARER Russian patent published in 2023 - IPC A01C7/20 

FIELD: agricultural engineering.

SUBSTANCE: subsoil broadcast seeding. The sharer for subsoil broadcast seeding of agricultural crops includes a duckfoot and a seed tube in the form of a pipe fixed on a stand, a leveling plate and a seed distributor made of a solid polymer. The wings of the duckfoot are bent along a curve of the second order, while along the axis of symmetry of the duckfoot there is a cutting edge made along a curve of the second order. The stand for attaching the duckfoot is installed with an inclination of 85° from the horizontal back, made in the cross section in the form of a prismatic profile, the tip is directed towards the sharer movement and has two holes for attaching to the guides in a parallelogram type. The seed tube is made in the form of a curved metal pipe having a circular section in the vertical plane, changing into a semicircular section with a lower plane inclined to the horizontal by 35°, having grooves for directing the seeds to the seed distributor. The latter is made in the form of a symmetrical figure, circumscribed along the vertical plane by curves of the second order and a semicircular section in the horizontal plane, smoothly changing from top to bottom in the direction of increase, and is attached to the rack with flat metal fasteners. Guide grooves are made on the surface of the distributor for uniform distribution of crop seeds, in addition, a leveling plate for aligning the bottom of the furrow and protecting the distributor from damage is installed on the lower side of the duckfoot.

EFFECT: improving the cutting characteristics of the duckfoot by increasing the cutting surface on the wings and along the axis of symmetry, reducing traction resistance due to the streamlining and profile of the sharer, as well as increasing the uniformity of seed distribution over the area of the subfoot space.

1 cl, 7 dwg