Abstract
Modern crop production is characterized by the introduction of resource-saving methods of processing and cultivation of crops aimed at preserving and increasing soil fertility. The purpose of the research is to determine traction and energy indicators and substantiate the operating modes of a machine-tractor unit based on a K-735 wheeled tractor with a Kuzbass PK 6.1 sowing complex. Based on research, it was found that the pulling force in sowing varies from 19.0 kN to 37.43 kN, the output hook power ranges from 40.11 to 124.26 kW and depends on the speed of the unit, the depth of sowing and the weight of the bunkers. The modes of operation of the unit are justified: at a depth of 5 cm in the second mode, 3 gears at a speed of rotation of the diesel crankshaft 1900 min–1 , after unloading the seeds 50 % transition to the 4th gear of the second mode at a speed of rotation of the diesel crankshaft in the range from 1730 to 1750 min–1 ; at depths of 7 and 9 cm on the second in the 3rd gear mode at a speed of rotation of the diesel crankshaft 1900 min-1 , after unloading the seeds 75 % transition to the 4th gear of the second mode at a speed of rotation of the diesel crankshaft in the range from 1730 to 1750 min–1 .
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