Draft force of tillage and seeding machines

Abstract

Draft forces of tillage-and-seeding machine Ob-4-ZT and tilthmakers Leader-2.5N, Leader-4, Leader-6N, Leader-8.5, and Leader 10.8 were analyzed. The energy assessment was carried out at the Siberian State Zonal Machine Test Station in 2003 and 2004 and at the Altai State Zonal Machine Test Station in 2010 and 2011. There were determined the mathematical dependencies of draft force in tillage unit K-701 combined with two tillage-and-seeding machines Ob-4-ZT on a tillage tool’s move depth and soil moisture, and in tillage-and-seeding machine Ob-4-ZT on operating speeds when sown wheat and cultivated fallow. It has been established that the draft force of seeding machines with tillage tools in the form of A-hoe blades working at small depths is to a larger extent influenced by resistance of a machine to rolling movements along a field and operating resistance force of ring rollers. The specific draft force of suspensions in tilthmakers Leader-2.5N and Leader-6N is somewhat higher than that of trails. The specific force at the operating speed of lower than 3 m/c is to a larger extent influenced by the changes in tillage tool’s move depths.