№77-20

Development and testing of a stand for studying the dynamics of an inertial screen with two motor-vibrators

К. Zabolotnyi¹, A.Shkut¹

¹Dnipro University of Technology, Dnipro, Urkaine

Coll.res.pap.nat.min.univ. 2024, 77:218–229

Full text (PDF)

https://doi.org/10.33271/crpnmu/77.218

ABSTRACT

Purpose. To substantiate the design of a stand for studying the dynamics of transient modes of an inertial screen with two motor-vibrators and to develop a methodology for conducting a physical experiment to study the dynamics of the screen.

The methods. To conduct a physical experiment, a laboratory stand was developed to study the dynamics of screens. The bench consists of an inertial screen with a piezoelectric acceleration sensor KD 35-2, a system of laboratory devices for acoustic and vibration measuring equipment Robotron, and a computer with installed software. The obtained data are analyzed using software that allows to display graphs of oscillations in different directions: vertical, horizontal and at an angle of 45.

Findings. A stand for analyzing the dynamics of screens was developed and tested. The results show that the computer modeling data and physical measurements are consistent. The maximum amplitude of vertical vibrations in the center of the screen was 24.71 mm, horizontal displacements reached 18.6 mm, and amplitude vibrations at an angle of 45° – 26.41 mm. The average deviation between the experimental and modeled data does not exceed 9%, which confirms the accuracy of the calculations.

The originality. This study presents for the first time a laboratory testbed for studying the dynamics of inertial two-drive screens using piezoelectric sensors and the Robotron vibrometry system. The uniqueness of the work lies in the development of a laboratory bench that allows for accurate measurement of amplitudes in real time, as well as the comparison of results with data from models developed in SolidWorks.

Practical implementation. The results of the developed methodology for studying physical prototypes of inertial double-drive screens can be used to optimize the design of vibrating screens in industry. The proposed approach makes it possible to accurately assess the dynamic characteristics of screens and determine the optimal parameters of their operation, which helps to reduce energy consumption and increase the efficiency of the material sorting process.

Keywords: screen, dynamic characteristics, laboratory bench, oscillation amplitude, measurement, calibration, SolidWorks.

References

1. Franchuk, V., Antsiferov, O., & Shkut, A. (2024). Dynamics of a vibrating screen with two motor-vibrators. IOP Conf. Ser.: Earth Environ. Sci., 1348, 012063. https://doi.org/10.1088/1755-1315/1348/1/012063

2. Shkut, A.P. (2023). Research on the dynamics of transitional regimes in an inertial screen with two motor vibrators. Collection of Research Papers of the National Mining University, 75, 203–213. https://doi.org/10.33271/crpnmu/75.203

3. Birta, H., & Burhu, Yu. (2023). Metodolohiia i orhanizatsiia naukovykh doslidzhen. Kyiv: Tsentr uchbovoi literatury.

4. Parovik, R. (2020). Mathematical Modeling of Linear Fractional Oscillators. Mathematics, 8(11), 1879. https://doi.org/10.3390/math8111879

5. Linhares, T., & Vimieiro, C. (2021). Analysis of the dynamic forces acting on a vibrating screen and its support structure using a scalemodel. Measurement, 176, 17–22. https://doi.org/10.1016/j.measurement.2021.109179