Low-frequency vibration isolation of heavy technology machines using elastomeric elements

Dyrda V.I., Lisitsa N.I., Kozub Yu.G., Agaltsov G.N., Zabolotnaya Ye.Yu., Tverdokhleb T.Ye., Lisitsa N.N.

Authors:

Dyrda V.I., D. Sc. (Tech.), Professor (IGTM NAS of Ukraine),
Lisitsa N.I., Ph. D. (Tech.), Senior Researcher (IGTM NAS of Ukraine),
Kozub Yu.G., Ph. D. (Tech.), Associate Professor (LNU named after T. Shevchenko),
Agaltsov G.N., M. S. (Tech.) (IGTM NAS of Ukraine),
Zabolotnaya Ye.Yu., M. S. (Tech.) (IGTM NAS of Ukraine),
Tverdokhleb T.Ye., M. S. (Tech.) (IGTM NAS of Ukraine),
Lisitsa N.N., M. S. (Tech.) (Oles Gonchar DNU)

UDC 678.4:539.3

Language: Russian

Abstract.

Protection of heavy machines against action of long-term vibrational loads with the help of elastomeric elements is considered. The heavy vibration machines – screens, feeders, centrifuges, mixers, fans, crushers – are characterized by the great stationary vibrations and noise caused by specificity of their operation. The most effective way to reduce vibrations (especially low frequency, i.e. within (1.0-25.0) Hz) is to use vibration isolation systems with elastomeric elements. The long-term experience of vibration isolation systems operation has shown their effectiveness: durability and reliability of the machines is improved, sanitary standards and protection of maintenance personnel is ensured. The mathematical apparatus for calculation of vibration isolation systems is proposed. For the case of stationary oscillations, the usual differential equations are used: the dissipative function can be taken into account by using the Kelvin-Focht theory of viscous friction. In order to take into account the entire relaxation spectrum of the system, the Boltzmann-Volterra integral-differential equations are used. Various types of vibration isolators are considered: rubber vibration isolators of the ВР type with a complex shape of the free surface, and rubber-metal vibration isolators of the ВРМ type with a diameter from 200 mm to 600 mm. Such vibration isolators provide the machine natural frequencies within the range of 0.5-2.8 Hz for the objects with weight from 20 kg to 500 tons. The examples of the following of vibration isolation systems implemented in the heavy industrial equipment are shown: fans of the ВДН‑17 (weight 5.8 tons) and ВСК-16 (weight 10.7 tons) types, vibroinsulators of the ВР‑203 and ВРМ‑903 types; granulators of the СВГ.148Л (weight 152 tons) type, pelletizers of the ОБ5‑3,2´12,5 (weight of 120 tons) type and mixers of the ОБ 7 (weight 160 tons) type, vibroinsulators ВРМ-903 and ВРМ-904; vortex mixers of the ВС-360 (weight 40 tons) type, vibroinsulators ВРМ‑903; crushers КИД (weighing up to 150 tons), vibration isolators of the ВР and ВРМ types. In all these cases of using vibration isolators, dynamic loads and noise were significantly decreased and the service life of machines was increased.

Keywords:

vibration, vibration isolation system, rubber vibration isolator, rubber-metal vibration isolator, heavy machinery

References:

1. Bulat, A.F., Dyrda, V.I., Zvyagilskiy, Ye.L. and Kobets, A.S. (2011), Prikladnayamekhanikauprugo-nasledstvennykhsred. Tom 1. Mehanika deformirovaniia i razrusheniia elastomerov [Applied mechanics of elastic-hereditary media. Vol. 1. Mechanics of deforming and breaking down of elastomers], Naukova dumka, Kiev, Ukraine.

2. Agaltsov, G.N. (2013), “Vibration insulation of whirlwind amalgamators of sinter plants by means of rubber elements”, Geo-Technical Mechanics, no. 108, pp. 185-196.

3. Dyrda, V.I., Lisitsa, N.I. and Lisitsa, N.N. (2013), “Creation of vibration isolators for mining machines”, Geo-Technical Mechanics, no. 113, pp. 116-125.

4. State Standard of USSR (1990), 12.1.012-90. SSBT. Vibratsionnaya bezopasnost. Obshchiye trebovaniya [12.1.012-90. SSBT. Vibration safety. General requirements], State Standard of USSR, Moscow, USSR.

About the authors:

Dyrda Vitaly Illarionovich, Doctor of Technical Sciences (D. Sc.), Professor, Head of Department of Elastomeric Component Mechanics in Mining Machines, M.S. Polyakov Institute of Geotechnical Mechanics under the 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.

Lisitsa Nikolay Ivanovich, Candidate of Technical Sciences (Ph. D.), Senior Researcher, Senior Researcher in Department of Elastomeric Component Mechanics in Mining Machines, M.S. Polyakov Institute of Geotechnical Mechanics under the 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.

Кozub Yuriy Gordeyevich, Candidate of Technical Sciences (Ph. D.), Associate Professor, Associate Professor in Department of Technology of Production and Trade Education, Taras Shevchenko National University of Lugansk (LNU), Lugansk, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Agaltsov Gennady Nikolaevich, Master of Science, Junior Researcher of Department of Elastomeric Component Mechanics in Mining Machines, M.S. Polyakov Institute of Geotechnical Mechanics under the 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.

Zabolotnaya Elena Yuryevna, Master of Science, First Category Engineer in Department of Elastomeric Component Mechanics in Mining Machines, M.S. Polyakov Institute of Geotechnical Mechanics under the 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.

Tverdokhleb Tatyana Yemelyanovna, Master of Science, Researcher of Department of Elastomeric Component Mechanics in Mining Machines, M.S. Polyakov Institute of Geotechnical Mechanics under the 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.

Lisitsa Natalya Nikolaevna, Master of Science, Assistant of computer technologies department, faculty of applied mathematics, Oles Honchar Dnipro National University (Oles Gonchar DNU), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.