Design and study of seeding devices for small selection seeding machines

¹ Tambov State Technical University, 392000, Sovetskaya st., 106, Tambov, Russia
² Samara State Agricultural Academy, 446442, Uchebnaya st., 2, Ust-Kinelskiy, Samara region, Russia
³ Tambov State University named after G.R. Derzhavin, 392000, Internatsionalnaya st., 33, Tambov, Russia

^* Corresponding author: nemtinov@mail.gaps.tstu.ru

Abstract

In this paper, it is proposed to use a self-propelled pneumatic mini-seeder with replaceable mechanical sowing devices designed and manufactured using computer technologies, advanced software and threedimensional printing for seeds selection. As a result of the research, hightech operating devices for a grain-drill feed with screw and disk-pin continuous seed metering are designed and manufactured. Grain-drill feeds allow sowing of free-flowing and non-free-flowing seeds, when used as seed meters on self-propelled pneumatic mini-seeders for selection sowing of grass seeds. Analysis of laboratory results of and field studies of the proposed grain-drill feeds allowed to determine the qualitative indicators of their performance: at a disk rotation speed of up to 15 rpm a linear dependence of the seed supply on the rotation frequency is provided; in the field studies, the instability of bluegrass seeding did not exceed 8%. The highest performance of the screw is obtained at the angle of choke inclination of 30...35 degrees with the seeding instability indicator of 2.5...3.5%. The developed grain-drill feed will significantly reduce the range of seeders and expand the set of sown seeds of various agricultural plants with one brand of a grain-drill feed.