DRILLING MECHANISM Russian patent published in 2005 - IPC

FIELD: agricultural engineering.

SUBSTANCE: proposed device contains bin with gate. Bin is made in form of hyperboloid of revolution. Gate is made in form of flat surface, being suspended on parallelogram hanger under bin. Flexible spacer in form of ring is placed between bin and gate, being rigidly connected with bin and gate. Spacer is provided with discharge port adjusted by shutter. Upper hinge joints of gate hangers located from side of discharge port are installed for movement and fixing in slots made over arcs of constant radius. Said radius is equal to distance between lower hinge joints of gate hangers lying in one longitudinal vertical plane with centers in upper hinge joints of hangers remote from discharge port. Central angle of slots is equal to angle of friction of seeds against gate surface, being directed downwards from horizontal plane passing through upper hinge joints of gate hangers remote from discharge port. Axle of lower hinge joints of gate remote from discharge port rests on spring-loaded fork. End of fork shank is in contact with rotary multicam pusher through roller, pusher being coupled with seed planter wheel.

EFFECT: provision of uniform delivery of seeds at possibility of changing of sowing rate and preservation of operation reliability of drilling mechanism.

2 dwg