Irkutsk National Research Tech nical University, Irkutsk, Russia

N. K. Kuznetsov, Head of Department, Professor, Doctor of Engineering Sciences
I. A. Iov, Associate Professor, Candidate of Engineering Sciences

Mirny Polytechnic Institute–Division of the Ammosov North-Eastern Federal University, Mirny, Russia

I. V. Zyryanov, Head of Department, Professor, Doctor of Engineering Sciences, zyryanoviv@inbox.ru

SLC–JH LLC, Moscow, Russia

A. A. Iov, Engineer

The article proposes a method for the parametric synthesis of an elastic damping device installed in the boom suspension mechanism of a mining excavator and equipped with a lever mechanism for transmitting force. It is shown that an effective tool for choosing the parameters of elastic damping devices is the concept of integration of the inverse dynamic problems with the methods of structural mathematical modeling. Representation of the well-known designs of elastic damping devices with a lever mechanism in the form of transfer functions, followed by solving an inverse problem for a given nature of transient processes makes it possible to obtain analytical dependencies that link the physical parameters of the mechanical system with the quality indicators of these processes. Based on the threemass design scheme of the digging mechanism of the excavator, a system of differential equations was obtained and a transition was made to a structural mathematical model of a damping device with regard to the moment of inertia of the boom, the stiffness of the suspension cable and the parameters of the lever mechanism. The procedure for synthesizing the parameters of an elastic damping device with a lever mechanism of force transfer is described, which ensures the limitation of dynamic loads in the digging mechanism, and the results of numerical simulation are presented, confirming the effectiveness of this device and the operability of the proposed synthesis method. The obtained parameters of the elastic damping device and the lever transfer coefficient make it possible to reduce the dynamic loads in the cable of the hoisting mechanism with a significant increase in the damping properties of the mechanical system, which will lead to a reduction in emergency failures, and to an increase in the working life of the boom and dipper of a mining excavator. 

1. Sun W., Du J., Wang L., Luan P., Li J. Hierarchical Modeling and Dynamic Analysis of Hoist System in Electric Mining Shovel. Shock and Vibration. 2018. Vol. 2018. ID 5017564.
2. Rasuli A., Tafazoli S., Dunford W. G. Dynamic Modeling, Parameter Identification, and Payload Estimation of Mining Cable Shovels. Proceedings of IEEE Industry Applications Society Annual Meeting. Vancouver, 2014. DOI: 10.1109/IAS.2014.6978451
3. Ivanov S. L., Ivanova P. V., Kuvshinkin S.Y. Promising model range career excavators operating time assessment in real operating conditions. Journal of Mining Institute. 2020. Vol. 242. pp. 228–233.
4. Kurganov V. M., Gryaznov M. V., Kolobanov S. V. Assessment of operational reliability of quarry excavator-dump truck complexes. Journal of Mining Institute. 2020. Vol. 241. pp. 10–21.
5. Komissarov A. P., Lagunova Yu. A., Nabiullin R. Sh., Khoroshavin S. A. Digital model of shovel work process. GIAB. 2022. No. 4. pp. 156–168.
6. Emelyanov A. A. Ivanov S. L., Shibanov D. A. To the question of impact assessment of qualification of the driver on technical condition of the excavator. GIAB. 2017. Special issue 38. Open pit mining in the 21^st century : Results, problems and prospects-2. pp. 442–453.
7. Makhno D. E., Shadrin A. I., Avdeev A. N., Makarov A. P. Cold brittleness and cold resistance of metalware in mining machines in the conditions of the North. Irkutsk : Izdatelstvo IrGTU, 2010. 231 p.
8. Bogdanov A. P., Gaynullin A. A., Efimov A. A., Levkovich R. V., Naumov D. S. et al. Metal wear defects of mine excavators. Universum: tekhnicheskie nauki. 2015. No. 11(22).
9. Andreeva L. I., Krasnikova T. I., Andreev A. A., Han K. O. To the question of operational conditions and the technical condition of cyclic action dredges monitoring. Gornoe oborudovanie i elektromekhanika. 2012. No. 5. pp. 21–25.
10. Puatibratov G. Ya., Borisov A. M. Improvement of efficiency of quick-action motors for digging mechanisms of quarry excavators. Tula State University Bulletin. Engineering Sciences : Digest. Tula : Izdatelstvo TulGU, 2010. Vol. 3, Iss. 3. pp. 138–144.
11. Lyakhomskiy A. V., Fashchilenko V. N. Control of electromechanical systems of mining machines. Moscow : Izdatelstvo Moskovskogo gosudarstvennogo gornogo universiteta, 2004. 296 p.
12. Raza M. A., Frimpong S. Fatigue failure modeling and life expectancy of the dipperteeth assembly of a mining shovel. Engineering Failure Analysis. 2020. Vol. 121. ID 105110.
13. Poderni. R. Yu. Mechanical equipment of open pits : Textbook. 8^th ed. Moscow : Mining Media Group, 2013. 593 p.
14. Gubenko A. A., Svinarchuk V. P. Review and analysis of design parameters of elastic damping devices. Nauchnyi vestnik Moskovskogo gosudarstvennogo gornogo universiteta. 2011. No. 1. pp. 9–19.
15. Svinarchuk V. P. Selection and justification of dynamic parameters for quarry excavator attachments : Dissertation of Candidate of Engineering Sciences. Moscow, 2012. 143 p.
16. Soloviv S. V., Kuziev D. А. Dragline ESh-10/70 linkage stiffness parameters study. Ugol. 2017. No. 1. pp. 37–38.
17. Eliseev S. V., Reznik Yu. I., Khomenko A. P., Zasyadko A. A. Dynamic synthesis in generalized problems of vibration protection and vibration insulation of man-made objects. Irkutsk : Irkutskiy gosudarstvennyi universitet, 2008. 523 p.
18. Iov I. A., Dolgikh E. S., Iov A. A. Dynamics control for operating mechanisms of excavators. Irkutsk : Irkutskiy natsionalnyi issledovatelskiy tekhnicheskiy universitet, 2022. 194 p.
19. Kuznetsov N. K., Iov I. A., Dolgikh E. S. et al. Working equipment of single-bucket excavator. Patent RF, No. 2779865. Applied: 02.03.2022. Published: 14.09.2022. Bulletin No. 26.
20. Ananin V. G. Theory and determination of parameters for single-bucket excavator attachments with mechanical drive : Theses of Dissertation of Doctor of Engineering Sciences. Moscow, 2007. 39 p.
21. Krasovskiy A. A., Pospelov G. S. Principles fo automatics and cybernetics. Moscow–Leningrad : Gosenergoizdat, 1962. 600 p.
22. Ananin V. G. Dynamic loading of attachments of quarry excavator EKG-20. Mekhanizatsiya stroitelstva. 2005. No. 5. pp. 16–19.