Combined unit for preparation of soil for sowing grain crop
2019
Apazhev, A., Kabardino-Balkarian State Agricultural Univ. named after V.M. Kokov, Nalchik, Kabardino-Balkarian Republic (Russian Federation) | Smelik, V, Saint-Petersburg State Agrarian Univ. (Russian Federation) | Shekikhachev, Yu., Kabardino-Balkarian State Agricultural Univ. named after V.M. Kokov, Nalchik, Kabardino-Balkarian Republic (Russian Federation) | Hazhmetov, L., Kabardino-Balkarian State Agricultural Univ. named after V.M. Kokov, Nalchik, Kabardino-Balkarian Republic (Russian Federation)
Food security of the Russian Federation is one of the priorities of the economic and food policy. Step by step decrease in dependence of domestic agro-industrial complex on import of technologies, cars, and equipment is of great importance. While preparing the soil for sowing grain crops the machines and units, which are carrying out one definite operation, are often used. Their repeated passes on the surface of the processed field raise power expenses, lead to consolidation of the soil, emergence and development of erosive processes. In this regard further improvement of machines and units for preparation of the soil for sowing grain crops is required. For the solution of this problem the combined soil-cultivating unit providing ploughing, crushing of soil blocks and mulching of a top soil is offered. The constructive and technological scheme of the combined soil-cultivating unit is proved. The method of calculation of the constructive process parameters of the specified unit is developed. Mathematical model of process of interaction of the active working body of the unit with the soil, regression models of dependence of quality of dyeing of the soil and traction resistance of the unit are received from its key parameters and operating modes (operating speed, angular speed of rotation of the drum and an angle of attack of the working body). Their optimum values are defined. It is received that use of the combined soil-cultivating unit provides for increase in maintenance of soil units of 0.025 in size-0.001 m, increase in porosity of the soil, decrease of dusty fraction in the contents of the soil.
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