Monastyrskyi V.F., Monastyrskyi S.V., Mostovyi B.I. Optimizing service life of conveyor belts while transporting bulk load

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Parent Category: Geo-Technical Mechanics, 2019

Category: Geo-Technical Mechanics, 2019, Issue 147

Geoteh. meh. 2019, 147, 82-91

https://doi.org/10.1051/e3sconf/201910900057

OPTIMIZING SERVICE LIFE OF CONVEYOR BELTS WHILE TRANSPORTING BULK LOAD

¹MonastyrskyiV.F., ¹MonastyrskyiS.V., ¹MostovyiB.I.

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

UDK 622.647.2:681.5                                      

Language: English

Abstract.

. The paper considers problems concerning optimization of service life of a conveyor belt in terms of its bulk material loading. To solve the problem of the optimization of conveyor belt life, correlation dependences between the belt factors and parameters were studied; the obtained coefficients made it possible to select significant ones resulting in considerable effect upon the belt life. It was defined that they include granulometric composition of bulk load, its loading height, type of the applied loading devices, conveyor parameters, type and properties of the belt material, and physical and chemical properties of the load. Statement of the problem of belt life optimization is in the determining minimum of difference between squared velocity of a conveyor belt and projection of horizontal component of the load velocity when it contacts a belt onto the belt motion plane. Cases of direct-flow loading and loading with the help of special devices with straight and curved trough profiles have been analyzed. When belt is loaded with granular fractions, its wear mechanisms are similar within both loading station and linear section at the expense of sliding distance while load moving relative to a belt. It should be noted that within a loading station, load slides down the belt at the inclination angle of a conveyor; within the linear section, it slides along the generator line of a side roller under gravity in the process of load ascending and descending while passing the idlers. While calculating belt wear due to the effect of granular fractions, we take the highest one of the two – within a loading point or within a linear section being equal to maximum. Belt wear due to lumps coming from a loading device during operation time depends upon the amount of lumps  contained within the total volume of bulk load on a casual basis. The problem was solved numerically taking into consideration the objective function, varied parameters, and their limitation. Regularities of changes in the belt service life due to significant factors in terms of direct-flow loading and loading with special device have been obtained to perform comparative analysis of different variants in terms of similar value of the objective function. The variants with maximum belt life and minimum objective function have been selected. It has been defined that for short conveyors, in terms of direct-flow loading, belt life decreases by 1.5–2.0 times comparing to the use of a loading device, and in terms of long conveyors, it decreases by 5–6 times, if value of the objective function is 0.5–1.0 m²/s².

Keywords: bulk cargo, belt, conveyor, wear, loading device, belt resource, target function.

 

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About the authors

Monastyrskyi Vitalii Fedorovych, 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, This email address is being protected from spambots. You need JavaScript enabled to view it.

Monastyrskyi Serhii Vitaliiovych, Candidate of Technical Sciences (Ph. D), Junior 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, This email address is being protected from spambots. You need JavaScript enabled to view it.

Mostovyi Borys Ivanovych, Master of Science, Principal 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, This email address is being protected from spambots. You need JavaScript enabled to view it.

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