COMBINED SEEDING UNIT Russian patent published in 2004 - IPC

FIELD: agricultural engineering, in particular, equipment for creating stable plant associations on pastures. SUBSTANCE: combined seeding unit has tractor, seed and fertilizer hopper equipped with seeding apparatuses, seed guides, shanks, coverers and covering roller. Unit is further equipped with rollers of differing sizes, which are arranged in succession and kinematically connected with one another. Front roller in the course of advancement of unit is designed to serve as shank and is equipped with soil deformers mounted in equally spaced relation on roller surface. Deformer side surfaces are defined by flat blades, which intersect with one another at an angle less than 90 deg. Roller of smaller diameter serving as coverers is defined by ribs, each being made in the form of double-faced wedge with apex angle less than 30 deg. Rib pitch of smaller diameter roller is equal to pitch of soil deformers on larger diameter roller. Seed guides of hopper mounted between rollers are made in the form of slit-type dosing device. Covering roller has hydraulic cylinders, which may be moved to position raised above soil surface. Kinematic coupling between rollers of differing sizes is provided by chain drive with transmission ratio equal to inverse value of ratios of diameters of circles circumscribing apexes of soil deformers of larger diameter roller and apexes of ribs of smaller diameter roller. Combined seeding unit provides for seeding of shrub, undershrub or grass seeds onto untilled pasture soil. EFFECT: simplified construction and provision for creating stable forage lands. 3 cl, 3 dwg