Engineering, Energy, Transport AIC

Oleksandra BILOVOD – Сandidate of Technical Sciences, Аssociate Professor, Dean of the Faculty of Engineering and Technology, Poltava State Agrarian University (1/3 Skovorody St., Poltava, Ukraine, 36003, е-mail: oleksandra.bilovod@pdau.edu.ua, https://orcid.org/0000-0003-3470-0091).
Anton KELEMESH – Сandidate of Technical Sciences, Аssociate Professor, Associate Professor of the of the Department of Agroengineering and Road Transport, Poltava State Agrarian University (1/3 Skovorody St., Poltava, Ukraine, 36003, е-mail: anton.kelemesh@pdau.edu.ua, https://orcid.org/0000-0001-9429-8570).
Oleksii BURLAKA – Сandidate of Technical Sciences, Аssociate Professor, Associate Professor of the of the Department of Agroengineering and Road Transport, Poltava State Agrarian University (1/3 Skovorody St., Poltava, Ukraine, 36003, е-mail: oleksii.burlaka@pdau.edu.ua, https://orcid.org/0000-0002-2296-7234).
Dmytro TARASENKO – Assistant of the Department of Mechanical and Electrical Engineering, Poltava State Agrarian University (1/3 Skovorody St., Poltava, Ukraine, 36003, е-mail: dmytro.tarasenko@pdau.edu.ua, https://orcid.org/0009-0002-4818-0963).

In the vast majority of modern combine harvesters, scraper elevators with centrifugal unloading are used for grain transportation. The main disadvantages of such elevators include: direct and reverse grain pouring; crushing and compression damage to the grain by the working bodies of the scraper elevator; lack of consideration of the physical and biological characteristics of the grain of various crops harvested by combines. Such elevators have one nominal speed of movement of the chain with scrapers, do not consider the degree of loading of the grain-transport line of the threshing machine. For example, when threshing grass seeds with a KZS-9-1 "Slavutych" combine, the productivity of the scraper elevator is on average 0.1...0.3 kg/s, and it is designed for 5...5.5 kg/s., we have increased energy costs for transportation.
Another problem is aimed at reducing the degree of crushing and compression damage to the grain by the working bodies of the scraper elevator of the combine harvester. And the disadvantage of the mechanical drive of the elevator is also the constant ingress of part of the grain into the gap between the hinges of the chain with scrapers and the drive sprocket.
According to the results of experimental studies, it is possible to determine that on modern combine harvesters it is advisable to introduce an electric drive with computer control of the speed of grain transportation both by the scraper elevator and by the grain transport group as a whole. For the KZS-9-1"Slavutych" combine harvester, the speed of grain transportation can be changed in the range of 260…360 min-1 with an increase in the centrifugal unloading sector to 1600. At the same time, the use of an electric drive also solves the technical problem of replacing the axial side feed of grain from the lower grain auger of the combine thresher with a radial top feed. This solution will reduce grain destruction.

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