| 摘要 |
FIELD: agricultural engineering, in particular, equipment for precision seed drills. SUBSTANCE: seeding unit has seeding disk with spacer rings mounted on square-section shafts between ring parts defining cells for fixed angular displacement and longitudinal motion along shaft axis. Ring parts defining cells are mounted on threaded base hub and cylindrical sleeves provided with square openings and positioned on shafts for longitudinal displacement along disk hub. Auxiliary plates are positioned at side adjacent to end surface of disk on shafts. Auxiliary plates have openings arranged in arced path, with center of arc radius being positioned in central part of shaft for fixed angular displacement. Construction of seeding unit allows sowing of seeds of different fractions to be performed without replacement of seeding disk and disassembly of seeding unit. EFFECT: increased efficiency, simplified construction and enhanced reliability in operation. 4 dwg
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