The article provides a computational and analytical justification for the design and kinematic parameters of an additional transport board that ensure the quality of grain of the first fraction due to the fall of grain from under the second threshing drum, a straw cutter and a threshing device on the second half of the upper sieve of the sieve mill of an upgraded combine with a two-phase threshing scheme and two-stream grain cleaning without taking into account and taking into account the impact of an inclined air flow from a standard fan, the direction and magnitude of the speed of which is determined by the position of the louver slats of the upper sieve and the departure of an additional transport board above it.

Lipkan Alexander V., Sakharov Vladimir A., Usanov Vyacheslav S., Kuvshinov Alexey A.

1. Kalinouski А. Aerodynamic calculation of the combine harvester cleaning system in second formulation. Mechanics of Machines, Mechanisms and Materials, 2024;2:53–60. doi: 10.46864/1995-0470-2024-2-67-53-60.
2. Lovchikov A. P., Ognev I. I. To the development of sieve combination of the combine harvester cleaning system. Proceedings from AIP Conference Proceedings: International Conference on Modern Trends in Manufacturing Technologies and Equipment 2021. (PP. 03005), Sevastopol, American Institute of Physics Inc., 2022. doi: 10.1063/5.0099725.
3. Lovchikov A. P., Ognev I. I. Theoretical background for combination of sieves of combine harvester cleaning system. Proceedings from AIP Conference Proceedings: International Conference on Modern Trends in Manufacturing Technologies and Equipment 2021. (PP. 030006), Sevastopol, American Institute of Physics Inc., 2022. doi: 10.1063/5.0099726.
4. Wei L., Kai Zh., Gang L., Huaichu D., Chunpeng Zh. An improved fuzzy logic control method for combine harvester’s cleaning system. Automatic Control and Computer Sciences, 2022;56:337–346. doi: 10.3103/S0146411622040058.
5. Badretdinov I. D., Mudarisov S. G., Khaliullin D. T. Examination of the airflow uneven distribution over the combine harvester cleaning system. Mathematical Modelling of Engineering Problems, 2022;9;2:371–378. doi: 10.18280/mmep.090210.
6. Rudoy D. V., Aleksakov Yu. F., Golev B. Yu., Maltseva T. A. Prerequisites and ways to improve the wind-sieve cleaning system of combine harvesters. Politematicheskii setevoi elektronnyi nauchnyi zhurnal Kubanskogo gosudarstvennogo agrarnogo universiteta, 2023;194:192–202. doi: 10.21515/1990-4665-194-017 (in Russ.).
7. Prisyazhnaya I. M., Prisyazhnaya S. P. Determination of the design parameters of additional transport and pitched boards in a two-phase threshing combine for the separation of soybean seeds. Agronauka, 2024;2;1:78–89. doi: 10.24412/2949-2211-2024-2-1-78-89 (in Russ.).
8. Prisyazhnaya I. M., Prisyazhnaya S. P., Sinegovskaya V. T., Bumbar I. V., Perepelkina L. I., Kuzin V. F. [et al.]. Improvement of the two-phase threshing combine for obtaining high-quality soybean seeds. Dal'nevostochnyj agrarnyj vestnik, 2018;4(48):277–283. doi: 10.24411/1999-6837-2018-14116 (in Russ.).
9.  Prisyazhnaya I. M., Prisyazhnaya S. P., Lipkan A. V. Development of adaptive combine harvester devices for obtaining high-quality seeds during soybean harvesting. Vestnik rossiiskoi sel'skokhozyaistvennoi nauki, 2023;2:84–88. doi: 10.31857/2500-2082/2023/2/84-88 (in Russ.).