Engineering, Energy, Transport AIC

Sergii LYASHENKO – Candidate of Technical Sciences, Associate Professor, Head of the Department of Agricultural Engineering and Road Transport of Poltava State Agrarian University (1/3 Skovorody St., Poltava, Ukraine, 36003, e-mail: sergii.liashenko@pdau.edu.ua, https://orcid.org/0000-0002-3227-3738).
Oleksii CHORNOBAI – postgraduate student in the specialty 133 Industrial Mechanical Engineering of Poltava State Agrarian University (1/3 Skovorody St., Poltava, Ukraine, 36003, e-mail: oleksii.chornobai@pdau.edu.ua, https://orcid.org/0009-0008-3121-9511).

Improving the operational and quality characteristics of soil tillage working bodies is an important factor in ensuring high yields and rational use of energy resources. It is known that insufficiently high-quality soil tillage can reduce yields by 15-30%. At the same time, the efficiency of soil tillage machines is reduced due to the rapid wear of their working bodies. Thus, the level of wear of the latter directly affects the productivity of the units.
To determine the permissible level of wear of arrow-shaped cultivator tines, which can be expressed in the area worked or the distance traveled, it is necessary to take into account the degree of wear of the blades, which affects the main indicators of their work. The availability of such data allows us to substantiate the optimal service interval for arrow-shaped cultivator tines, that is, the period of their most effective use, which emphasizes the relevance of the conducted research.
According to the results of experimental studies, it was found that with an increase in the radius of the edge of the blade of the paw r from 0,1 to 0,5 mm at the speeds of movement of the arrow-shaped cultivator paw 6, 8 and 10 km/h, the specific resistance increases by 11,98%, 12,00% and 12,02%, respectively, and the increase in resistance is 0,185; 0,256 and 0,375 kN/m, respectively. The intensity of the increase in resistance with an increase in speed from 6 km/h to 8 km/h is 36-38%, and in the range from 8 km/h to 10 km/h – 47-49%.
To ensure the set depth of cultivation in accordance with agrotechnical requirements, it is necessary to check the depth of cultivation and adjust it every 75 km of the path traveled by the arrow-shaped cultivator tine or 9,36 hours of clean operation of the TIGER MATE 2-12 unit. The uniformity of the depth of the path remains within the permissible values (=37,5%) with a radius of the edge of the tine blade up to 0,5 mm. A satisfactory level of root system undercutting (94-96 %) is observed with a blade radius of 0,3-0,4 mm, provided that the recommended speed of movement of the unit is not less than 8 km/h.

1.    Rybalko, I.M., Tikhonov, O.V., & Zakharov, A.V. (2023). Research on the nature of wear of cultivator tines. Technical Progress in APV: Materials of the All-Ukrainian Scientific and Practical Conference (May 9-10, 270–272). Kharkiv: DBTU. [in Ukrainian].
2.    Padalka, V., Lyashenko, S., Burlaka, O., Sakalo, V., & Padalka, Y. (2021). Modeling of resonance phenomena in self-oscillating system of agricultural machines. In Modern Electrical and Energy Systems (September 21–24). URL: http://mees.ieee.org.ua/wp-content/uploads/2021/09/Program_MEES_2021.pdf [in Ukrainian].
3.    Voytyuk, D.G., Derkach, O.P., Gumenyuk, Y.O., Marus, O.A., Chuba, V.V. (2022). Machines and equipment for crop production: A textbook for performing laboratory work for students of specialty 133 "Industrial mechanical engineering". Kyiv: FOP Yamchynskyi O.V. [in Ukrainian]. 
4.    Kozachenko, O.V., Shkregal, O.M., Kadenko, V.S. (2021). Ensuring the efficiency of the working bodies of cultivators (Monograph). Kharkiv: PromArt. [in Ukrainian].
5.    Zakharov, A., Rybalko, I., Tikhonov, O., Saychuk, O. (2023). Research on the wear capacity of soils and its influence on the durability of working bodies of tillage machines. Scientific Bulletin of the Tavria State Agrotechnological University, 13(1). URL: https://doi.org/10.31388/sbtsatu.v13i1.359. [in Ukrainian].
6.    Borak, K.V. (2021). A comprehensive approach to increasing the durability and wear resistance of working bodies of soil-tillage machines (Author’s abstract of the dissertation for the degree of Doctor of Technical Sciences, specialty 05.05.11 “Machines and means of mechanization of agricultural production”). Kyiv. [in Ukrainian].
7.    Installation for modeling the movement of working bodies of soil tillage machines. Patent №. 34499. Ukraine. MPK A01B 39/00. № 20803911. Filed March 28, 2008. Published August 11, 2008, Bulletin № 15. [in Ukrainian].
8.    Lyashenko, S.V., Lyashenko, S.S. (2024). Design of a torsion-impact soil cultivator. Mechanical and technological justification of an energy-saving device for tillage without a tiller in the conditions of the Poltava region (2nd ed., rev. and suppl.). Poltava: Astraya Production Association. ISBN 978-617-8231-72-9. [in Ukrainian].
9.    Horvat, A.A., Molnar, O.O., Minkovych, V.V. (2019). Methods of processing experimental data using MS Excel: Tutorial (Yu. Yu. Zhiguts & I. I. Nebola, Eds.). Uzhhorod: Goverla. ISBN 978-617-7825-00-4. [in Ukrainian].
10.    Derzhspozhyvstandart of Ukraine. (2009). Soil quality. Determination of soil hardness by Revyakin hardness tester (DSTU 5096:2008). Kyiv. [in Ukrainian].
11.    Derzhspozhyvstandart of Ukraine. (2010). Soil quality. Conducting field experiments. Basic requirements (DSTU 7080:2009). Kyiv. [in Ukrainian].
12.    Derzhspozhyvstandart of Ukraine. (2013). Agricultural machinery. Methods for determining test conditions (DSTU 7435:2013). Kyiv. [in Ukrainian].
13.    Bondarev, S.A. (2013). Justification of the limit blade wear of tillage tools. Technology Audit and Production Reserves, 5(2(13)), 8–10. https://doi.org/10.15587/2312-8372.2013.18359 [in English].