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Article

Energy-Saving Inertial Drive for Dual-Frequency Excitation of Vibrating Machines

1
Institute of Engineering Mechanics and Transport, Lviv Polytechnic National University, 79013 Lviv, Ukraine
2
Faculty of Geoengineering, Mining and Geology, Wroclaw University of Science and Technology, 50-370 Wroclaw, Poland
*
Author to whom correspondence should be addressed.
Energies 2021, 14(1), 71; https://doi.org/10.3390/en14010071
Received: 12 November 2020 / Revised: 18 December 2020 / Accepted: 23 December 2020 / Published: 25 December 2020
(This article belongs to the Special Issue Modelling and Calculation of Raw Material Industry)
The low energy efficiency and excessive power of electric motors of large-scale vibrating machines for processing bulk materials motivated a new design of the inertial drive. This drive consists of one motor and two coaxial unbalanced masses, whose rotational frequencies are related in the ratio 2:1. This approach allows for a generation of the excitation force with variable amplitude and frequency, which changes depending on the inertial characteristics and shaft rotation frequency and does not relate to the phase difference of the unbalanced masses. Because of this, the symmetry axis of the resulting vector hodograph can be changed. The spectral composition of the exciting force up to 200 Hz contains higher harmonics, the energy share of which is 25.4% from the 2nd harmonic and 14.1% from the 3rd and higher harmonics that correspondingly improves bulk material treatment in comparison to single-frequency vibrators. The finite element model is used for checking the strength capacity of the most loaded units of a dual-frequency drive. Its use allows the realization of complex trajectories of motion that are more technologically efficient for variable parameters of the treated media and energy saving in sieving screens and other vibrating machines. View Full-Text
Keywords: sieving screen; inertial vibrator; dual-frequency; spectrum; FEM simulation sieving screen; inertial vibrator; dual-frequency; spectrum; FEM simulation
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MDPI and ACS Style

Gursky, V.; Kuzio, I.; Krot, P.; Zimroz, R. Energy-Saving Inertial Drive for Dual-Frequency Excitation of Vibrating Machines. Energies 2021, 14, 71. https://doi.org/10.3390/en14010071

AMA Style

Gursky V, Kuzio I, Krot P, Zimroz R. Energy-Saving Inertial Drive for Dual-Frequency Excitation of Vibrating Machines. Energies. 2021; 14(1):71. https://doi.org/10.3390/en14010071

Chicago/Turabian Style

Gursky, Volodymyr, Igor Kuzio, Pavlo Krot, and Radoslaw Zimroz. 2021. "Energy-Saving Inertial Drive for Dual-Frequency Excitation of Vibrating Machines" Energies 14, no. 1: 71. https://doi.org/10.3390/en14010071

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