Kobets A.S., Dyrda V.I., Sokol S.P., Cherniy A.A., Ovcharenko Yu.N. Studying of vibration machine dynamics with taking into account damages in the elastic linkages

Details

Parent Category: Geo-Technical Mechanics, 2018

Category: Collection of scientific papers «Geotekhnicheskaya Mekhanika» Issue 138

Geoteh. meh. 2018, 138, 205-211

DOI: https://doi.org/10.15407/geotm2018.01.205

Studying of vibration machine dynamics with taking into account damages in the elastic linkages

Kobets A.S., Dyrda V.I., Sokol S.P., Cherniy A.A., Ovcharenko Yu.N.

Authors:

Kobets A.S., Dr. of Sciences on the state. Management, Professor, Rector (DGAU)

Dyrda V.I., Dr. Tech. sciences, professor (IGTM NAS of Ukraine)

Sokol S.P., Ph.D. tech. Sciences, Senior Lecturer (DGAU)

Cherniy A.A., graduate student (IGTM NAS of Ukraine)

Ovcharenko Yu.N., Ph.D. tech. Sciences, Associate Professor (DGAU)

UDC 539.3

Language:Russian

Abstract.

Modern technologies for processing loose, toxic, abrasive materials prone to adherence set a number of requirements for the vibration technology of mining, among which the most important are: machines, along with performing technological processes, must feature low weight, high reliability and long life; should make possible to realize automation and should not require constant presence of human operators; should be easy to maintain; should not transfer vibrations and noise; should not create conditions for operator injuries; should not pollute the environment, etc. Such requirements forced designers to draw great attention on principles of design and calculation and, first of all, durability of vibration machine operation. Besides, new designs should take into account dynamic and fatigue characteristics. In the article, one of the important aspects of this problem is considered: creation of new and improvement of existing machine designs by introducing into the structural scheme elastic linkages such as rubber elements, vibration isolators and protective lining. Elastic linkages in vibromachines play a very important role, which basically reduces to the following: they perform functional properties and choose mode of operation; reduce harmful vibrations and sound pressure; protect human operators, electrical equipment, control devices and adjacent machines, building elements, etc. against dynamic loads and sound pressure; prevent fatigue destruction of structures by dissipating the energy of destruction; reduce wear and shock loads, for example, in machines, whose driven elements have rubber coatings; reduce distortions of structures, inaccuracies in installation, serve as compensators for assembly deficiencies, eliminate gaps, etc.

The article focuses on the following: trends in designing of vibromachines in accordance with the requirements of modern production (intensification of modes by reducing frequency and increasing amplitude of oscillations, creating high-performance machines, etc.); perfection of vibromachines by their basic dynamic properties (stability, effort and steadiness); (increased requirements for durability and reliability, reduction of weight , sound pressure and vibrations, excluded sudden failures, etc.) – so, we inevitably come to the conclusion that the requirements most fully put to the vibrators can be satisfied when rubber elements are used as elastic linkages, vibration isolators and protective lining.

In the article, vibration conveyors of the KB2T type are considered, which differ by simplicity of construction, low specific material consumption and high degree of reliability. A generalized algorithm is presented for calculating dynamic characteristics with taking into account damage, which develops with time in elastic linkages. An example of calculation of vibrating conveyor is given.

Keywords:

two-mass resonant vibroconveyor, rubber elastic connections, sealer, damage.

References:

1. Bulat, A.F., Dyrda, V.I., Zviagilskii, E.L. and Kobets, A.S. (2012), Prikladnaya mekhanika uprugo-nasledstvennykh sred. Tom 2. Metody rascheta elastomernykh detalei [Applied mechanics of elastic-hereditary media. Vol. 2. Design techniques of elastomeric parts], Naukova dumka, Kyiv, Ukraine.
2. Ivovich, V.A. and Onishchenko, V.Ya. (1990), Zashchita ot vibratcii v mashinostroenii [Protection against vibration in mechanical engineering], Mashinostroenie, Moscow, USSR

About the authors

Kobets Anatoliy Stepanovych,Doctor of Public Administration, Professor, Rector, Dnipro State University of Agriculture and Economics, Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Dyrda Vitaly Illarionovich, Doctor of Technical Sciences (D. Sc.), Professor, Head of Department of Elastomeric Component Mechanics in Mining Machines, Institute of Geotechnical Mechanics named by N. Polyakov of National Academy of Science of Ukraine (IGTM NASU), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Sokol Sergey Petrovich, Candidate of Technical Sciences (Ph. D.), Senior Teacher of Dnipro State Agrarian and Economic University (DSAEU), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Cherniy Alexandr Anatolyevich, Doctoral Student in Department of Elastomeric Component Mechanics in Mining Machines, Institute of Geotechnical Mechanics named by N. Polyakov of National Academy of Science of Ukraine (IGTM NASU), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Ovcharenko Yuriy Nikolayevich, Candidate of Technical Science (Ph. D.), Associate Professor, Department of reliability and repair of machinery, Dnipro State Agrarian Economic University (DSAEU), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

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