VIBRATION-PULSE METHOD OF ASSESSING TECHNICAL CONDITION OF BALL BEARINGS. STUDY OF SHOCK PULSES PARAMETERS WHEN WEARING BEARING ELEMENTS

PODDUBKO Sergey N., Ph. D. in Eng., Assoc. Prof., Director General, 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.

ISHIN Nikolay N., D. Sc. in Eng., Assoc. Prof., Chief of R&D Center “Mining Machinery”, Joint Institute of Mechanical Engineering of the NAS of Belarus, Minsk, Republic of Belarus

GOMAN Arkadiy M., Ph. D. in Eng., Assoc. Prof., Head of the Department of Dynamic Analysis and Vibration-based Diagnostics of Machines, Joint Institute of Mechanical Engineering of the NAS of Belarus, Minsk, Republic of Belarus

SKOROKHODOV Andrey S., Ph. D. in Eng., Leading Researcher of the Department of Dynamic Analysis and Vibration-Based Diagnostics of Machines, Joint Institute of Mechanical Engineering of the NAS of Belarus, Minsk, Republic of Belarus

DAKALO Yuriy A., Senior Lecturer of the Department “Mechanical Engineering”, Brest State Technical University, Brest, Republic of Belarus

The issues of application of vibration-pulse method of assessing technical condition of ball bearings are investigated for an estimation of influence of wear of their working surfaces on shock pulses parameters. Urgency of development of methods for in-place vibration diagnostics of magnitude wear in the bearings is justified. The  changes associated with the refinement of the calculation of the impact action time are proposed by introducing an additional parameter depending on the radial force acting on the shaft into the initial formula. It is shown that wear process, being the cause of increasing of the working radial clearance between the raceways and the rolling elements in the bearing, increases the force of the shock pulse and affects the time of the shock interaction. The  problems of calculation and rationing of the radial clearance and the amount of wear in ball bearings are considered. The example of calculation of shock pulse parameters taking into account change of size of wear in ball radial single-row bearings of series 307 is given. The features of precessional motion of the shaft caused by the  presence of centrifugal force, and the formation of shock pulses for bearings operating at high rotational speeds are considered.

bearing, technical condition, diagnostics, shock pulse, shock pulse parameters, radial clearance, wear

1. Poddubko S.N., Ishin N.N., Goman A.M., Skorokhodov  A.S., Dakalo Yu.A Vibratsionno-impulsnyy metod otsenki tekhnicheskogo sostoyaniya podshipnikov kacheniya. Raschet parametrov udarnykh impulsov [Vibration-pulse method of assessing technical condition of ball bearings. Calculation of shock pulse parameters]. Mekhanika mashin, mekhanizmov i materialov [Mechanics of machines, mechanisms and materials], 2019, no. 1(46), pp. 5–12.
2. Reshetov D.N. Detali mashin [Car components]. Moscow, Mashinostroenie Publ., 1986. 496 p.
3. Ushakov S.M., Amigut M.G., Zhuravskiy-Skalov D.L. Remont putevykh mashin [Repair of track machines]. Moscow, Transport Publ., 1988. 225 p.
4. Remont podshipnikov kacheniya [Repair of ball bearings]. Available at: http://leg.co.ua/info/elektricheskie-mashiny/remont-elektrodvigateley-dazo-4.html (accessed 27 March 2018).
5. Kudrevatykh A.V. Diagnostika reduktorov motor-koles karernykh samosvalov na osnove kontrolya za iznosom podshipnika [The diagnostics of career dump motor-wheel gear on the basis of monitoring the depreciation of the bearing]. Vestnik Kuzbasskogo tekhnicheskogo universiteta [Herald of Kuzbass State Technical University], 2017, no. 2, pp. 88–93.
6. Gioev Z.G., Prikhodko V.M., Kozaev V.S. Vibratsionnoe prognozirovanie tekhnicheskogo sostoyaniya tyagovykh elektricheskikh mashin lokomotivov [Vibration forecasting of technical condition of traction electric machines of locomotives]. Izvestiya Transsiba [Transsib Railway Studies], 2016, no. 1(25), pp. 15–25.
7. Biderman V.L. Teoriya mekhanicheskikh kolebaniy [Theory of mechanical vibrations]. Moscow, Lenand Publ., 2017. 416 p.
8. Internal clearance and standard values. Available at: http://www.doppiaemme.it/en/informazioni-tecniche/bearing-internal-clearance.html (accessed 27 March 2018).
9. Koturga V.P., Borodin D.A., Smyslova I.V. Model formirovaniya zazorov i proizvodnykh kharakteristik v sharikovykh radialnykh podshipnikakh [The model of the formation of clearances and derivative characteristics of radial ball bearings]. Vestnik Kuzbasskogo tekhnicheskogo universiteta [Herald of Kuzbass State Technical University], 2010, no. 1, pp. 76–80.
10. Vakhitov Ya.Sh. Vibratsii i shumy kinoapparatury [Vibration and noise of cinema equipment]. Vozbuzhdenie i rasprostranenie vibratsiy [Excitation and propagation of vibrations], 1982, issue  1.
11. Pavlov V.B. Akusticheskaya diagnostika mekhanizmov [Acoustic diagnostics of mechanisms]. Moscow, Mashinostroenie Publ., 1971. 224 p.