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Flexible couplings with rubber-cord shells in dual pinion mill drives

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Category: Geotechnical and mining mechanical engineering, machine building

Last Updated on 02 April 2016

Published on 02 April 2016

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Authors:

B.V. Vinogradov, Dr. Sci. (Tech.), Professor., State Higher Educational Institution “Ukrainian State University of Chemical Technology”, Professor of the Department of Materials Science, Dnipropetrovsk, Ukraine.

A.V. Khristenko, State Higher Educational Institution “Ukrainian State University of Chemical Technology”, postgraduate student, Dnipropetrovsk, Ukraine.

Abstract:

Purpose. To estimate the effectiveness of the coupling with rubber-cord shells for evenly distributed load between the transmission lines in the twin-motor drives of tumbling mills.

Methodology. We gave the dynamic and static elastic characteristics of clutches and drive containing the coupling with rubber-cord shells. The performance of couplings containing rubber-cord shell was analyzed based on the mathematical models describing the load transmission lines of each engine depending on the displacement angle of the motor and hydraulic couplings parameters.

Findings. The schemes and characteristics of clutches containing rubber-cord shell are presented. It was proved that these couplings, in case of use of the rubber-cord shells available at the market, allow transmitting the torque of up to 8,000 kN ∙ m, which satisfies the twin-engine drives with a total capacity up to 10,000 kW.

We considered the drives containing the coupling with rubber-cord shells filled with a liquid and connected with hydropneumatic accumulator for the cases when the hydraulic system of rubber-cord shells is independent and connected by the common pipeline. The technique of quantitative evaluation of the uneven distribution of load between the engines was developed.

Originality. The regularities of distribution of static loads in synchronous twin-drum drive mills containing elastic couplings with rubber-cord shells

Practical value. It was proved that the use of flexible couplings with rubber-cord shells without hydraulic connection between the couplings results in a more even load distribution due to the increased compliance of the mechanical system.

References:

1. Vijfeijken, M. van de, Filidore, A., Walbert, M. and Marks, A. Copper Mountain: Overview On The Grinding Mills And Their Dual Pinion Mill Drives. [pdf]. Available at: ABB <http://www05.abb.com/global/scot/scot244.nsf/veritydisplay/d43c675f94ad66abc125793d0056168e/$file/COPPER%20MOUNTAIN%20-%20OVERVIEW%20ON%20THE%20GRINDING%20MILLS%20AND%20THEIR%20DUAL%20PINION%20MILL%20DRIVES.pdf> [Accessed Oct. 4, 2014].

2. Green, Jack H. and Stroker, John J., 2000. Ball Mill Drive Motor Choices, Proc. of the IEEE/PCA Cement Industry Technical Conference, Salt Lake City, UT, May 2000, pp. 39−55.

3. Виноградов Б.В. Гидропневмобаллонная упруговязкая система / Б.В. Виноградов // Вібрації в техніці та технологіях. – 2011. – №1(61) – С.15−19.

Vinogradov, B.V., 2011. Hydropneumoballoon visco-elastic system. Vibratsii v tekhnitsi i tekhnolohiiakh, 1(61), pp. 15−19.

4. Годжаев З.А. Исследование характеристик пнев­ма­тического упругого элемента рукавного типа в зависимости от давления воздуха, хода и формы поршня / З.А. Годжаев, А.А. Поповский, С.В. Гончаренко // Вісник Сев-НТУ: зб. наук. праць − Севастополь, 2011. – №120 – С. 306–311.

Godzhaev, Z.A., Popovskiy, A.A. and Goncharenko, S.V. 2011. Research of the dependence of the characteristics of the hose-type air bellows on the air pressure, stroke and shape of the piston. Visnyk Sev-NTU, 120, pp. 306–311.

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