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https://doi.org/10.17559/TV-20221117162133

Analysis of Bearing Assemblies Refit in Agricultural PTO Shafts

Eleonora Desnica orcid.org/0000-0002-4724-5764 ; University of Novi Sad, Technical Faculty "Mihajlo Pupin", Đure Đakovića bb, 23000 Zrenjanin, Republic of Serbia
Aleksandar Ašonja orcid.org/0000-0001-6667-1024 ; University Business Academy in Novi Sad, Faculty of Economics and Engineering Management in Novi Sad, Cvecarska 2, 21000 Novi Sad, Republic of Serbia
Milan Kljajin orcid.org/0000-0002-9291-4111 ; University North, University Center Varaždin, Jurja Križanića 31b, 42000 Varaždin, Croatia
Hrvoje Glavaš ; University of Osijek, Faculty of Electrical Engineering, Computer Science and Information Technology Osijek, Kneza Trpimira 2B, 31000 Osijek, Croatia
Alexander Pastukhov ; Belgorod State Agricultural University named after V. Gorin, Vavilova 1, Mayskiy 308503, Belgorod region, Russian Federation

Sažetak

The paper analyzes the problems of the most commonly used cardan shafts in agricultural machinery through a theoretical review and tests on a laboratory test bench. The aim of the research presented in this paper was to define the justification of a new method for retrofitting universal joint bearing units compared to the traditional methods of retrofitting. The new approach is based on energy efficiency (saving energy, raw materials and labor) compared to the conventional methods of retrofitting. The presented investigation to justify the proposed refit was carried out after the investigation of the extent of damage to the elements of the bearing assembly, which lasted 4.02 minutes per sample, with the aim of obtaining information essential for the purpose of our work. The proposed diagnosis and refit of the cardan bearings can help to extend the service life and improve the reliability of the universal joint shafts already in service. The results of the research have shown that the method with replaceable bushings (installation of undamaged surfaces in the load transfer zone) is 6.24 to 7.54 times cheaper than the complete repair of the elements of the bearing assembly, 2.11 to 2.83 times cheaper than the refit method, in which the damaged joints are replaced with new ones, and 1.62 to 2.74 times cheaper than the purchase of new double PTO (Power Take-Off) shafts.

Ključne riječi

damage; needle bearings; PTO shafts; repair; universal joint; wear

Hrčak ID:

300697

URI

https://hrcak.srce.hr/300697

Datum izdavanja:

23.4.2023.

Posjeta: 445 *