Kustov S. Improving the quality of selection of combine harvesters

The thesis is devoted to increasing the efficiency of collecting sunflower seeds by improving the design of the reel and threshing drum of the selection combine and substantiating their rational parameters and operating modes. In the process of scientific research: - the mathematical dependences of the movement of the reel blade relative to sunflower plants have been established, which make it possible to substantiate the rational parameters and modes of its operation, taking into account the physical and mechanical properties of the stem and to ensure a decrease in seed loss; - obtained experimentally the dependence of the influence of the main parameters of the reel and the closed drum on the performance indicators of selection grain harvesters; - the models of the movement of the technological mass of sunflower in the threshing gap were further developed, allowing to establish the dependence of the speed of movement of sunflower particles on the main design and technological parameters of the closed drum; - the analytical dependence of the interaction of sunflower plants with the dividers of the header of the selection harvester has been improved, taking into account a set of parameters: the point of contact of the stem with the divider, the angle of the stem, the angle of exacerbation of the divider, the angle of inclination of the divider and the intensity of the load; - the research results are introduced into production.