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Title of the article PREDICTION OF THE MAIN GEAR LIFETIME OF BELAZ DUMP TRUCK AT THE DESIGN STAGE
Authors

LISICHIK Aliaksander S., Head of the Mechanical Transmission Office, OJSC “BELAZ” – Management Company of Holding “BELAZ-HOLDING”, Zhodino, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

SHYSHKO Sergei A., Deputy Chief Designer — Head of the Mechanical Transmissions Department, OJSC “BELAZ” – Management Company of Holding “BELAZ-HOLDING”, Zhodino, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

ISHIN Nikolay N., D. Sc. in Eng., Assoc. Prof., Chief of the R&D Center “Mining Machinery”, Joint Institute of Mechanical Engineering of the NAS of Belarus, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

SIDORENKO Alexandr G., Ph.D. in Eng., Head of the Laboratory of Reliability Problems and Metal Intensity of High and Extra-High Capacity Dump Trucks of the R&D Center “Mining Machinery”, Joint Institute of Mechanical Engineering of the NAS of Belarus, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

MAKSIMCHENKO Natalia N., Ph.D. in Eng., Deputy Head of the Organizational and Analytical Department, Joint Institute of Mechanical Engineering of the NAS of Belarus, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.
In the section DYNAMICS, DURABILITY OF VEHICLES AND STRUCTURES
Year 2023
Issue 2(63)
Pages 31–41
Type of article RAR
Index UDK 621.833
DOI https://doi.org/10.46864/1995-0470-2023-2-63-31-41
Abstract The purpose of the research is to improve the method for calculating the lifetime of bevel gears with a circular tooth of the driving axle of the BELAZ dump truck with a hydromechanical transmission. An analysis of domestic and foreign calculation methods showed that when determining the contact stresses in the gearing, the influence of the modification of the side surfaces of the teeth on the magnitude of internal dynamic loads is not taken into account, which leads to a significant overestimation of the calculated lifetime of gears during their design. The solution to the problem is the introduction of refinement coefficients into the calculation methods traditionally used in OJSC “BELAZ”, the values of which are determined according to the recommendations of the Gleason company (USA), the supplier of gear-cutting equipment to OJSC “BELAZ”. Comparison of the actual value of the lifetime of the gear wheels of the main gear, established according to the results of the career operation of the BELAZ dump truck with a carrying capacity of 90 t with a hydromechanical transmission (about 142,000 km of run), with the results of calculating the lifetime using the proposed (134,000 km of run) and traditional (167,000 km of run) methods showed that the relative error in estimating the lifetime of the bevel gears of the drive axle of the dump truck, calculated by the proposed method, is about 6 %, and by the traditional one — 15.5%.
Keywords mining dump truck, drive axle, bevel gear with circular tooth, dynamic load, operational life
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