Kiriya R. V., Smirnov A. N. Determination of dynamic force acting on roller supports when belt and weight move along curved section of the tubular conveyer

Details

Parent Category: Geo-Technical Mechanics, 2018

Category: Geo-Technical Mechanics, 2018, Issue 139

Geoteh. meh. 2018,139, 78-88

DOI: https://doi.org/10.15407/geotm2018.02.078

DETERMINATION OF DYNAMIC FORCE ACTING ON ROLLER SUPPORTS WHEN BELT AND WEIGHT MOVE ALONG CURVED SECTION OF THE TUBULAR CONVEYER

¹Kiriya R. V., ¹Smirnov A. N.

¹Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine

UDC622.647.2:622.023.65

Language: Russian

Abstract.

In connection with the increase of ecology requirements presently tubular band conveyers got distribution. One of above all dignities of tubular band conveyer is possibility to transport a granular load on curvilinear routes, both in horizontal and in a vertical plane. At motion of сonveyer belt and load on the curvilinear area of tubular conveyer there are additional dynamic efforts on idler conditioned by forces of inertia. As the analysis of literature on this theme showed, this question is not enough studied.

In the paper, a problem of determining dynamic forces acting on roller supports of tubular conveyor belt with the curvilinear framework in vertical plane is considered. Equations are obtained for vibrations of belt when it moves with weight along the roller supports in curvilinear section of the conveyor framework. Using the Ritz method, analytical dependencies between dynamic forces acting on the conveyor roller supports and parameters of the conveyor, its framework and belt were obtained. It is established that dynamic forces acting on roller supports in the curvilinear section of tubular conveyor are decreased with increasing angle of incline, and are increased with increasing weight of the lumps. At the same time, the dynamic forces acting on roller supports in the curvilinear section of tubular conveyors are increased with faster belt speed tending to infinity when the belt speed becomes critical. The greatest dynamic forces acting on roller supports are observed at the beginning of the curvilinear section of tubular conveyor. The dynamic force acting on roller support at the beginning of the curvilinear section of tubular conveyor framework increases with increasing distance between the roller supports, becomes minimum and increases linearly with further increase of the distance between the roller supports.

Coefficient of dynamic quality in the case of portage by the band conveyer of small-lumpiness and large pieces of load with the increase of distance between idlers diminishes on a hyperbolical law and at the large values of distance between idlers aspires to the permanent value, equal coefficient of dynamic quality for the case of portage by the band conveyer of small-lumpiness load.

Keywords: roller supports, tubular conveyer, belt, weight, curvilinear section, dynamic forces.

References:

1. Galkin, V.I. and Dmitriev, V.G. (2009), “Tubular conveyers for mining industry”, Gornoe oborudovanie i elektromekhanika, no. 1, pp. 39–46.

2. TSigler, M. and Busse, Kh.-Y. (1992), “Underground exploitation of conveyer with the displaced ribbon on the «Luizental mine»”, Gluykauf, no. 3, pp. 27–33.

3. Timoshenko, S.P. (2006), Kolebaniya v inzhenernom dele [Vibration in engineering], DomKniga, Moscow, RU.

4. Kiriya, R.V. and Smirnov, A. N. (2016), “Determination of dynamic factor when the belt with load are transported by the tubular conveyers roller supports”, Geo-Technical Mechanics, no. 131, pp. 144–151.

5. Kiriya, R.V. and Smirnov, A. N. (2017), “Application of the Rittsa method in tasks loud speakers at motion of load on stave tubular band conveyer”, Zbirnyk naukovykh prats Natsionalnohо hirnychoho universytetu, no. 52, pp. 198–208.

About the authors:

Kiriya Ruslan Vissarionovich, Candidate of Technical Sciences (Ph.D), Senior Researcher, Head of Department of Mining Transport Physics and Mechanics, Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine  (IGTM NASU), Dnepr, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Smirnov Andrey Nikolaevich, Candidate of Technical Sciences (Ph.D), Senior Researcher in Department of Mining Transport Physics and Mechanics, Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine  (IGTM NASU), Dnepr, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

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