Kiriia R.V., Smirnov А.M., Mishchenko Т.F. Determination of the loads on the rollers of the tubular belt conveyor

Details
Parent Category: Geo-Technical Mechanics, 2019
Category: Geo-Technical Mechanics, 2019, № 144

Geoteh. meh. 2019, 144, 157-168

https://doi.org/10.15407/geotm2019.144.157

Determination of the loads on the rollers of the tubular belt conveyor

1Kiriia R.V., 1Smirnov А.M., 1Mishchenko Т.F.

1Institute of Geotechnical Mechanics named by N. Poljakov of NAS of Ukraine

UDC 622.647.2

Language: Russian

Abstract.

The article presents methods for determining loads on rollers of a six-roll support of a tubular belt conveyor, based on the equilibrium laws of elastic cylindrical shells filled with a freight. In this case, the forces acting on the rollers of the tubular conveyor are the sum of the forces caused by the weight and expansion of the bulk load, the weight and bend of the belt, as well as the inertial forces associated with the curvature and the deflection of the belt under the weight of the bulk load. In addition, in the case of movement of the tubular conveyor belt along a curved section, the rollers are subject to forces due to the tension of the belt, as well as centrifugal forces during the movement of the load and the belt along a curved path. The forces acting on the rollers of the tubular conveyor, due to the weight and expansion of the bulk load, are determined from the system of equilibrium equations of the cylindrical shell, divided into six thin unclosed cylindrical rods, based on the rollers. The forces acting on the rollers, due to the bending of the belt in the plane of its normal cross-section, are determined on the basis of the equilibrium theory of a cylindrical plate, also divided into six thin unclosed cylindrical rods resting on the rollers. The dynamic forces acting on the rollers as the belt moves along the roller-supports of the tubular conveyor are determined from the equation of the oscillations of a heavy flexible string as it moves along the roller-supports using the Ritz method. As a result of the research, analytical dependences of the forces acting on the rollers of the six-roller support of the tubular conveyor on the parameters of the conveyor, the belt, the properties of the bulk load and the radius of curvature of the conveyor are obtained. An assessment of the component forces acting on the rollers of the tubular conveyor is given. It was found that the magnitude of the forces acting on the rollers, due to the load expansion, is directly proportional to the square of the radius of the tubular belt, and the magnitude of the forces acting on the rollers due to the bend of the belt, is inversely proportional to the square of the radius of the tubular belt. The results can be used to determine the parameters of the tubular conveyors rollers and increase the service life of the rollers.

Keywords:

tubular belt conveyor, rollers, forces, load expansion, belt bending

References:

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About the authors:

Kiriia Ruslan Vissarionovych, Doctor of Technical Sciences (D. Sc), Senior Researcher, Senior Researcher in Department of Geomechanics of Mineral Opencast Mining Technology, Institute of Geotechnical Mechanics named by N. Poljakov NAS of Ukraine (IGTM, NASU), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .

Smirnov Andrii Mykolaiovych, Candidate of Technical Sciences (Ph.D), Senior Researcher in Department of Geomechanics of Mineral Opencast Mining Technology, I Institute of Geotechnical Mechanics named by N. Poljakov NAS of Ukraine (IGTM, NASU), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Mishchenko Tamara Fedorivna, Master of Science, Senior Specialist in Department of Geomechanics of Mineral Opencast Mining Technology, Institute of Geotechnical Mechanics named by N. Poljakov NAS of Ukraine (IGTM, NASU), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .