Kiriia R.V., Mishchenko T.F. Determination of the maximum allowable distance between the roller conveyors of a tubular belt conveyor
- Деталі
- Батьківська категорія: Геотехнічна механіка, 2019
- Категорія: Геотехнічна механіка, 2019, № 147
Geoteh. meh. 2019, 147, 42-53
https://doi.org/10.1051/e3sconf/201910900035
DETERMINATION OF THE MAXIMUM ALLOWABLE DISTANCE BETWEEN THE ROLLER CONVEYORS OF A TUBULAR BELT CONVEYOR
1KiriiaR.V., 1MishchenkoT.F.
1Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine
UDK 622.647.2:621.867.2
Language: English
Abstract.
The article concerns the determination of the optimal parameters of tubular belt conveyors transporting bulk load. Purpose of work: to determine the permissible distance between the roller supports of the tubular belt conveyor. A mathematical model of the stress-strain state of a tubular conveyor belt filled with bulk load is obtained. The belt is considered as a thin elastic inextensible cylindrical shell located between the roller supports and filled with bulk eoad in extreme condition. At the same time, distributed tensile forces along the forming of the shell, bending moments in the cross section and torques from the side of the roller support around the axis of symmetry of the shell act on the shell filled with bulk load. From the side of bulk load, active and passive normal lateral pressures act on the conveyor belt, which depend on the degree of filling of the belt and the angular coordinate of the points of the normal section of the belt. In this case, active normal stresses act on the belt from the load side to the middle of the span between the roller supports, and passive normal stresses act on the tape from the load side from the middle of the span to its end. In addition, from the side of the bulk load, the friction forces of the load on the conveyor belt act along the tangents to the circle of the normal section of the shell. The article assumes that the shell movements are small, and bending moments can be neglected. As a result, we obtained a system of differential equilibrium equations for a tubular belt with a bulk load with respect to the forces and bending moments in the belt, which was reduced to a fourth-order differential equation for the deflections of the belt. Based on this mathematical model, the analytical dependences of the deflections of the balt of the tubular conveyor on the parameters of the conveyor, the radius and properties of the belt, as well as the properties of bulk load, were obtained and analyzed. As a result, the maximum allowable distance between the roller supports of the tubular conveyor is determined. It was found that the allowable distance between the roller bearings is directly proportional to the tension of the belt and inversely proportional to the square of the radius of the belt and the bulk weight of the load. The research results can be used in the design of tubular belt conveyors transporting bulk load.
Keywords: tubular belt conveyor, roller supports, belt, bulk load.
REFERENCES
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About the authors
Kiriia Ruslan Visarionovуch, 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 of National Academy of Sciences of Ukraine (IGTM, NAS of Ukraine), Dnipro, Ukraine, Ця електронна адреса захищена від спам-ботів. вам потрібно увімкнути JavaScript, щоб побачити її.
Mishchenko Tamara Fedorіvna, Master of Science, Senior Specialist in Department of Geomechanics of Mineral Opencast Mining Technology, Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine (IGTM, NAS of Ukraine), Dnipro, Ukraine, Ця електронна адреса захищена від спам-ботів. вам потрібно увімкнути JavaScript, щоб побачити її.