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DOI: 10.15507/2658-4123.036.202602.238-261

UDK 631.316.4

The Methods for Determining the Characteristics of the Trajectory Movement of a Row Machine-Tractor Unit

Vladimir A. Kravchenko
Dr.Sci. (Eng.), Professor, Professor of the Department of Food Production Engineering and Technology, Don State Technical University (1 Gagarin Square, Rostov-on-Don 344003, Russian Federation), ORCID: https://orcid.org/0000-0002-9152-5851, Scopus ID: 57204159481, SPIN-code: 9983-4293, This email address is being protected from spambots. You need JavaScript enabled to view it.

Lyudmila V. Kravchenko
Dr.Sci. (Eng.), Professor, Head of the Chair of Design and Technical Service of Transport and Technological Systems, Don State Technical University (1 Gagarin Square, Rostov-on-Don 344003, Russian Federation), ORCID: https://orcid.org/0000-0002-9228-3313, Researcher ID: ABD-9790-2021, Scopus ID: 57204646125, SPIN-code: 9684-8955, This email address is being protected from spambots. You need JavaScript enabled to view it.

Nikolay V. Sergeev
Cand.Sci. (Eng.), Associate Professor, Associate Professor of the Department Operation and Technical Service of Land Transport and Technological Facilities, Azov-Black Sea Engineering Institute – a branch of the Don State Agrarian University (21 Lenin St., Zernograd 347740, Russian Federation), ORCID: https://orcid.org/0000-0002-0518-8001, This email address is being protected from spambots. You need JavaScript enabled to view it.

Victor V. Zhurba
Cand.Sci. (Eng.), Associate Professor, Associate Professor of the Department of Design and Technical Service of Transport and Technological Systems, Don State Technical University (1 Gagarin Square, Rostov-on-Don 344003, Russian Federation), ORCID: https://orcid.org/0000-0002-1075-6157, Scopus ID: 57212377815, SPIN-code: 1453-5517, This email address is being protected from spambots. You need JavaScript enabled to view it.

Abstract
Introduction. At present, the workers of the agro-industrial complexes in the Russian Federation are faced with the task of ensuring the country food security and integrating into the global market of agricultural products. The successful implementation of these tasks depends on the solution of increasing the efficiency of agricultural units based on wheeled row tractors. When performing technological operations, the row unit moves with lateral wheel slip that negatively affects its traction and energy indicators and the quality of operating, because of the deviation in the lateral direction of the working bodies of agricultural machines unacceptable according to agrotechnical requirements. Improving the unit functional indicators during the cultivation of row-spacing of row crops can be ensured by installing tires having a rational value of lateral recovery resistance coefficients on the tractor wheels.
Aim of the Study. The study is aimed at reducing operating and energy costs and improving the quality of technological operation during the trajectory movement of agricultural row units through completing the wheels of running systems of universal row tractors with tires of rational lateral stiffness.
Materials and Methods. The objects of field testing were standard tires 9.00R-20 and 15,5R-38, a row unit consisting of a tractor Belarus 80.1 and an attached cultivator KRN-5,6. The studies were conducted using a theoretical and experimental method based on simultaneous carrying out of analytical calculations and experimental works.
Results. There have been determined rational values of the coefficients of resistance to the tire drift of the tractor Belarus 80.1.
Discussion and Conclusion. When the tractor Belarus 80.1 generates a drawbar pull of about 9 kN and its slipping is 12–15%, it is necessary to equip its dirigible wheels with tires having a lateral rigidity of more than 18 kN/rad, and driving wheels with tires having a lateral rigidity of at least 50 kN/rad. The proposed technique can be used when equipping tires of running systems of any row agricultural units.

Keywords: row unit, trajectory motion, pneumatic wheel, pneumatic wheel tire, tire slip, tire slip resistance coefficient

Conflict of interest: The authors declare that there is no conflict of interest.

For citation: Kravchenko V.A., Kravchenko L.V., Sergeev N.V., Zhurba V.V. The Methods for Determining the Characteristics of the Trajectory Movement of a Row Machine Tractor Unit. Engineering Technologies and Systems. 2026;36(2):238–261. https://doi.org/10.15507/2658-4123.26362.238-261

Authors contribution:
V. A. Kravchenko – oversight and leadership responsibility for the research activity planning and execution, including mentorship external to the core team; ideas; formulation or evolution of overar ching research goals and aims; c conducting a research and investigation process, specifically performing the experiments and data. collection; preparation, creation and / or presentation of the published work, specifically writing the initial draft.
L. V. Kravchenko – application of statistical, mathematical, computational, or other formal techniques to analyse or synthesize study data; development or design of methodology; preparation, creation and / or presentation of the published work, specifically writing the initial draft (including substantive translation).
N. V. Sergeev – conducting a research and investigation process, specifically performing the experiments and data; preparation, creation and / or presentation of the published work, specifically visualization / data presentation.
V. V. Zhurba – conducting a research and investigation process, specifically performing the experiments and data; preparation, creation and / or presentation of the published work, specifically visualization / data presentation.

All authors have read and approved the final manuscript.

Submitted 30.06.2025;
revised 06.10.2025;
accepted 14.11.2025

REFERENCES

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