| 摘要 |
FIELD: agricultural engineering. SUBSTANCE: drill has roller comprising set of drum-type wheels arranged in side-by-side relation for moving to one another in vertical plane and independent of one another, and seeding shanks connected with said wheels. Drum-type wheels are joined with supporting frame by means of holders, said frame being positioned transverse to advancement direction. Seeding shanks are mounted on holders and rearward of drum-type wheels by means of carrier arms. Holder is made in the form of parallelogram. Holder upper clip and respective carrier arms of seeding shanks are united into constructional unit, which is connected through detachable joint to other holder. Agricultural machine has at least one supporting frame, onto which reservoir is mounted and to which tractor hitch is secured. Reservoir is equipped with drive mechanism including drive wheels. Seeding unit is mounted on supporting frame behind drive wheels by means of connecting unit capable of raising and lowering and is equipped with seeding shares movable in vertical plane and provided with roller-type members, which are adapted for movement in forward direction. During soil cultivation, drive wheels may be raised from soil surface by means of connective devices or individual raising device. Spring devices are positioned between roller-type members and shank frame. Such construction provides for precise and stable seed material embedding depth. EFFECT: increased efficiency and enhanced reliability in operation. 22 cl, 14 dwg
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