DRILL SEEDING UNIT Russian patent published in 2001 - IPC

FIELD: agricultural engineering. SUBSTANCE: seeding unit has frame, hopper mounted on frame, and powered seeding device hung to cylindrical hopper bottom by means of suspender imparting rocking motions to seeding device which is movable along arced path. Lower throat of cylindrical hopper is equipped with special supports. Immovable intermediate ring is attached to hopper lower throat through bosses made integral to ring. Three race-type slots and three through slots are made on both sides of ring in strictly coinciding positions. Intermediate ring is embraced from the top and from the bottom with upper and lower rings with similar race-type slots and through slots made on their one side faced to intermediate ring. Rings are provided with three through openings. Separators are positioned between rings. Balls of separators are located in related race-type slots in rings. Lower ring is fixed on seeding unit housing. Upper ring is connected to lower screws passed via through openings and slots of intermediate ring. Bracket on seeding unit housing is adapted for attachment of connecting rod of drive mechanism. EFFECT: enhanced reliability in operation, reduced nonuniformity of seed ejection through seeding holes of seeding unit. 9 dwg