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DOI: 10.15507/2658-4123.030.202003.426-447
Evaluation of Technical Condition of Round Gear Hydraulic Pumps of Tractor Mounted Hydraulic Systems
Pavel V. Chumakov
Associate Professor of Institute of Mechanics and Power Engineering, National Research Mordovia State University (68 Bolshevistskaya St., Saransk 430005, Russia), Ph.D. (Engineering), Researcher ID: G-8320-2018, ORCID: https://orcid.org/0000-0002-8504-5907, This email address is being protected from spambots. You need JavaScript enabled to view it.
Alexei V. Martynov
Associate Professor of Institute of Mechanics and Power Engineering, National Research Mordovia State University (68 Bolshevistskaya St., Saransk 430005, Russia), Ph.D. (Engineering), Researcher ID: AAR-8786-2020, ORCID: https://orcid.org/0000-0003-4744-4373, This email address is being protected from spambots. You need JavaScript enabled to view it.
Alexander V. Kolomeychenko
Chief of Advanced Technology Management Board, Agricultural Engineering Centre NAMI (2 Avtomotornaya St., Moscow 125438, Russia), D.Sc. (Engineering), Professor, Researcher ID: D-6053-2019, ORCID: https://orcid.org/0000-0002-3865-4486, This email address is being protected from spambots. You need JavaScript enabled to view it.
Ismail H. Hasan
Researcher of Material Science Laboratory, Ministry of Science and Technology (Al-Jadriya, Baghdad 765, Iraq), Researcher ID: C-5025-2019, ORCID: https://orcid.org/0000-0002-4560-1016, This email address is being protected from spambots. You need JavaScript enabled to view it.
Alla S. Kolomeychenko
Head of Information Technology and Mathematics Chair, Orel State Agrarian University (69 General Rodin St., Orel 302019, Russia), Ph.D. (Economics), Associate Professor, Researcher ID: AAR-8498-2020, ORCID: https://orcid.org/0000-0001-7200-8819, This email address is being protected from spambots. You need JavaScript enabled to view it.
Introduction. In the technical service enterprises, the reliable estimation of a technical condition of hydraulic gear pumps of tractor mounted hydraulic systems is a priority in introducing new repair processes. The absence of data of manufacturing plants on limiting wear of working surfaces of hydraulic pump details, when the decision on repair is taken, leads to the necessity of carrying out additional researches. In this regard, the purpose of work is to find the limit wear values for working surfaces of details of round gear hydraulic pumps.
Materials and Methods. The laboratory tests of used round gear hydraulic pumps were carried out according to the method developed in the GOSNITI on the hydraulic bench of the KI-28097M-GOSNITI. The controlled parameter during tests is the pump delivery rate.
Results. The results of laboratory bench and micrometer studies of used round gear hydraulic pumps are presented in the work. The mathematical model of pump delivery rate dependence on statistically significant independent factors is obtained. The limit values for wear of working surfaces of round gear hydraulic pump details are determined by the steepest ascent method on the received mathematical model.
Discussion and Conclusion. According to the results of the input bench control of the used round gear pumps, 81% of the tested units were operated in the over-extreme limit state. The limit values for wear of working surfaces of round gear hydraulic pump details obtained by the steepest ascent method make it possible to make a conclusion about the necessity of their restoration in repairing at technical service enterprises.
Keywords: hydraulic pump, delivery rate, technical condition, wear, micrometry
For citation: Chumakov P.V., Martynov A.V., Kolomeychenko A.V., et al. Evaluation of Technical Condition of Round Gear Hydraulic Pumps of Tractor Mounted Hydraulic Systems. Inzhenerernyye tekhnologii i sistemy = Engineering Technologies and Systems. 2020; 30(3):426-447. DOI: https://doi.org/10.15507/2658-4123.030.202003.426-447
Contribution of the authors: P. V. Chumakov – literature data analysis, methodology development, regression model analysis; A. V. Martynov – statistical processing of data, obtaining a regression model of connection of volumetric feeding of round hydraulic pumps with wear of working surfaces of parts; A. V. Kolomeychenko – formulation of research agenda, statistical accumulation; I. H. Hasan – micrometer examination of round gear hydraulic pump components; A. S. Kolomeychenko – analysis and plotting of graphical distribution dependencies.
All authors have read and approved the final manuscript.
Received 06.02.2020; revised 16.04.2020; published online 30.09.2020
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