Abstract
The studies were carried out to determine the compliance of traction-speed performance of the tractor as part of the machine-tractor unit with aggregation requirements, taking into account the random nature of changes in external factors. The work was carried out using the example of the assembly Fendt 936 Vario + AVA-12.6 “Agropitatel” in Leninsk-Kuznetsk district of Kemerovo region in 2017. Using the control dynamometer method, the probabilistic characteristics of the traction resistance of the machine, its dependence on the speed of movement in the operations of the main tillage and intra-soil liquid fertilizer application were determined. The studies were carried out on medium humus on stubble background with depth of soil treatment and fertilizing of 21 cm and the average length of run 1100 m. The tractor Fendt 936 Vario does not ensure compliance with the requirements for operating speed and slipping of propellers when working within the range of average specific drag. Power equipment with the estimated parameters will improve the traction coefficient of performance for 4.7…13.6% in comparison with the tractor Fendt 936 Vario, which will increase the average working traction on the hook, which is implemented without violation of the established requirements. The result will be an increase in the average operating speeds of the unit and an increase of its net hourly productivity.
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