The problem of self-synchronization of a three-axis vibrating mill with four unbalance vibrators, which are actuated by independent asynchronous motors and have the same angular velocities, is considered in the paper. In self-synchronization, synchronization and phase matching of the vibrator is achieved due to the vibration of the system of bodies on which the vibrator is installed, that is, by providing a dynamic connection between them.
Słowa kluczowe: vibration exciter, imbalance, synchronization, milling chamber.
W artykule analizowano problem synchronizacji trzyosiowego wibracyjnego młyna z czterema niezależnymi wibratorami. Samoczynna synchronizacja została osiągnięta dzięki dynamicznemu połączeniu między wibratorami i podłożem.
Keywords: wibracja, młyn wibrtacyjny, synchronizacja
The fundamental disadvantage of single-vibration vibratory mills is that the exciter`s force is limited by the permissible loads of their bearing assemblies, as well as difficulties in assembling and disassembling them. Therefore, the creation of powerful vibration exciters is possible, first of all, by aggregation of universal simple (twosupport) vibration exciters. The aggregation of vibration exciters can significantly reduce the time and reduce the cost of design and manufacture of vibration mills, while at the same time simplify their maintenance and repair. In other cases, the use of several low-power exciters instead of one equal in power is due to the need to bridge the forced force over the vibrating working body of a vibrating mill of considerable size. Aggregation of vibration exciters can be carried out sequential, parallel, as well as mixed. The synchronization of the rotation of the vibrators is necessary to create a continuous movement of the working body (camera) of the vibrating mill in a circular path and is provided mainly by three methods of synchronization: using special shafts, gears, chain or belt transmissions. , forced electrical synchronization (using an electric shaft system or synchronous motors) or self-synchronization. Obviously, the best way to synchronize is to self-synchronize, since it does not require additional devices that complicate the design. In recent years, dynamic synchronization (selfsynchronization) has been widely used in vibration technology. The phenomenon of dynamic synchronization consists in the fact that several artificially created or natural objects, which, in the absence of interaction, make oscillatory or rotating movements with different frequencies when long weak links are superimposed, begin to move with the same or multiple frequencies, which are in rational relations, moreover, certain phase relations between oscillations and rotations are established. Analysis [...]
. Kudinov Ye.S., Boiko I.H., Analysis of methods for grinding grain feed in accordance with their energy intensity, Bulletin of the Kharkiv National Technical University of Agriculture named after Peter Vasylenko. Series: Technical Sciences, 95 (2010), 5-12 . Hvozdiev O.V., Shpyhanovych T.O., Yalpachyk O.V., Improvement of grain grinding process, Collection of scientific works of Vinnytsia National Agrarian University. Series: Technical Sciences, 11( 2011), 143-150 . Yanovych V., Honcharuk T., Honcharuk I., Kovalova K., Engineering management of vibrating machines for targeted PRZEGLĄD ELEKTROTECHNICZNY, ISSN 0033-2097, R. 96 NR 3/2020 165 mechanical activation of premix components, Inmateh - Agricultural Engineering, 54 (2018), nr. 1, 25-32 . Yanovych V., Kupchuk I., Determination of rational operating parameters for a vibrating disk-type grinder used in ethanol industry, Inmateh - Agricultural Engineering, 52 (2017), nr. 2, 143-148 . Bernik P.S., Denisov P.D., Solona O.V., Vibrating mill, Patent UA, 43792 (2011) . Kaletnik G.M., Yanovych V.P., Substantiation of operating and design parameters of a gyration mill for the production of highly active premixes, Vibrations in engineering and technology, 84 (2017), nr. 1, 15-21 . Kupchuk I.M., Solona O.V., Derevenko I.A., Tverdokhlib I.V., Verification of the mathematical model of the energy consumption drive for vibrating disc crusher, Inmateh - Agricultural Engineering, 55 (2018), nr. 2, 111-118 . Lanets O., Derevenko I., Borovets V., Kovtonyuk M., Komada P., Mussabekov K., Yeraliyeva B. Substantiation of consolidated inertial parameters of vibrating bunker feeder, Przeglad Elektrotechniczny, 95 (2019), nr. 4, 47-52 . Bulgakov V., Adamchuk V., Kaletnik G,. Arak M., Olt J., Mathematical model of vibration digging up of root crops from soil, Agronomy Research, 12 (2014), nr. 1, 41-58 . Yanovych V., Tsurkan O., Polevoda Yu, Development of the vibrocentric machine for the production of a basic mixture of homeopathic preparations, Scientific Bulletin, Series D: Mechanical Engineering, 81 (2019), nr. 2, 13-26 . Vedmitskyi Y. G., Kukharchuk V. V., Hraniak V. F., New nonsystem physical quantities for vibration monitoring of transient processes at hydropower facilities, integral vibratory accelerations, Przeglad Elektrotechniczny, 93 (2017), nr.3, 69- 72 . Yaroshevych T.S., Sylyvoniuk A.V., Yaroshevych M.P., Dynamics of running of vibrating machines with two unbalanced exciters that self-synchronize, Bulletin of the Sevastopol National Technical University. Mechanics, power engineering, ecology, 137 (2013), 49-54 . Zabrodets I.P., Yaroshevych M.P., Tolstushko M.M., Martyniuk V.L., Dynamics of starting up vibration machines with inertial exciters of oscillations taking in to account the elasticity of the drive, Bulletin of Kharkiv National Technical University of Agriculture named after Petr Vasilenko, 178 (2016), 140-147 . Kukharchuk V.V., Kazyv S.S., Bykovsky S.A., Discrete wavelet transformation in spectral analysis of vibration processes at hydropower units, Przeglad Elektrotechniczny, 93 (2017), Nr 5, 65-68 . Ruchynskyi M., Nazarenko M., Pereginets I., Kobylianskyi O., Kisała P., Abenov A., Amirgaliyeva Zh. Simulation and development of energy-efficient vibration machines operating in resonant modes, Przeglad Elektrotechniczny, 95 (2019), nr. 4, 60-64 . Bulgakov V., Pascuzzi S., Ivanovs S., Kaletnik G., Yanovych V., Angular oscillation model top redict the performance of a vibratory ball mill for the fine grinding of grain, Biosystems engineering, 171 (2018), 155-164 . Bulhakov V.M., Adamchuk V.V., Kaletnik G.M., Chernysh O.M., Theoretical study of forced harmonic vibrations in vibration drives of machines, Vibrations in engineering and technology, 82 (2016), nr. 2, 5-9 . Solona O.V., Kots I.V., Vasylenko T.V., Melnyk A.Yu., Vibrating mill, Patent UA, 94905 (2014) . Solona O.V., Yanovych V.P., Melnyk O.S., Vibrating mill, Patent UA, 109539 (2016) . Solona O.V., Vibration mills with space-circulation loading for fine grinding of bulk materials, Vinnytsia State Agrarian University, 2008, 133