New theoretical method for establishing indentation rolling resistance

• Autorzy: Konieczna-Fuławka Martyna

Identyfikatory

DOI

10.37190/msc233006

• Języki publikacji: EN

Abstrakty

EN

Theoretical analysis indicates an underestimation of the calculated values of resistance of conveyor belts in relation to the measurement results. Disproportions are mainly observed for large mass capacities of conveyors. In this paper previous method for calculations of indentation rolling resistance was improved. Indentation rolling resistance is the main component of motion resistance for conveyors longer than 80 m. The most important impact on rolling resistance have damping factor of belt. This parameter was included in calculations in the new approach, moreover, a defined way of its determination in laboratory conditions was indicated. Another important parameter is the modulus of elasticity affecting the transverse rigidity of the belt. By analyzing elastic energy in bottom cover and cord of the belt new equations (which included construction and belt type) were established. In addition, the impact of the distribution of the loads along the idler on the rolling resistance value was analyzed. On this basis different equations for calculations of center and side idler was proposed. New theoretical model was verified in both laboratory test and measurements conducted in mine conditions. A series of tests of rolling resistance and damping properties were carried out for belts of various core designs and various rubber of bottom covers. Damping factors and modules of elasticity established in laboratory conditions were applied to new calculations algorithms. Obtained results were compared with measured values. Final verification of the new theoretical model was a comparison of calculated resistance with measured values for conveyor in mine. The obtained results have much higher convergence than the previous calculations. The new calculations allows for more accurate dimensioning of the drive and other elements of the belt conveyor.

Słowa kluczowe

EN

belt conveyor; conveyors belt; idler; indentation rolling resistance; motion resistance

• Wydawca: Wydział Geoinżynierii, Górnictwa i Geologii, Instytut Górnictwa Politechniki Wrocławskiej
• Czasopismo: Mining Science
• Rocznik: 2023
• Tom: Vol. 30
• Strony: 99--111
• Opis fizyczny: Bibliogr. 23 poz., rys.

Twórcy

autor

Konieczna-Fuławka Martyna

• Wroclaw University of Science and Technology, Faculty of Geoengineering, Mining and Geology, 27 Wybrzeże Wyspiańskiego st., 50-370 Wroclaw, Poland

• https://orcid.org/0000-0003-4182-8245

Bibliografia

• GŁADYSIEWICZ L., 1990, Methods of determining the main resistances of the belt conveyor with particular emphasis on the properties of the belt, Prace Naukowe CPBP 02.05, Wyd. Politechniki Warszawskiej, Warszawa.
• GŁADYSIEWICZ L., 2003, Belt conveyors. Theory and calculations, Oficyna Wydawnicza Politechniki Wrocławskiej. Wrocław.
• GŁADYSIEWICZ L., KONIECZNA M., 2018, Analytical method for establishing indentation rolling resistance, [in:] XVIIth Conference of PhD Students and Young Scientists, EDP Sciences, art. 00001, pp. 1–11, E3S Web of Conferences, ISSN 2267-1242, Vol. 29.
• HARDYGÓRA M., WOŹNIAK D., KOMANDER H., BAJDA M., SAWICKI W., 2009, Experimental research of energy-saving conveyor belts, Transport and Logistics, Belgrade.
• HENDRIK O., KATTERFELD A., 2015, Analysis and simulation of belt tracking of conveyor belts, World of Mining – Surface and Underground, January, Vol. 67, No. 1.
• JENNINGS A., 2014, The CEMA Horsepower Equation Development of a new conveyor power prediction methodology, Conveyor Technology Guide.
• JONKERS C.O., 1980, The indentation rolling resistance of belt conveyors, Fördern und Heben, Vol. 30, No. 4.
• KESSLER F., 1986, Investigation of the guiding forces transverse to the belt running direction in belt conveyors with horizontal curving resistance of belt conveyors, Fördern und Heben, Vol. 30, No. 4.
• KISIELEWSKI W., 2016, Influence of selected operating and design parameters on the main resistances of belt conveyors, Doctoral thesis (unpublished), Wrocław.
• KONIECZNA-FUŁAWKA M., 2019, The method of determining the rolling resistance of the belt on idlers, Doctoral thesis (unpublished), Wrocław.
• KRAUSE F., HETTLER W., 1974, The load on the idlers of belt conveyors with three idlers set due to the material being conveyed, taking into account the conveying process and the bulk material properties, Wissenschaftliche Zeitschrift der Technischen Hochschule Otto von Guericke, Magdeburg, 18, Heft 6/7, pp. 667–674.
• KRÓL R., KISIELEWSKI W., 2014, Research of loading carrying idlers used in belt conveyor – practical applications, Diagnostyka, Vol. 15, No. 1.
• KRÓL R., GŁADYSIEWICZ L., WAJDA A., 2010, Analysis of the load distribution of load-carrying idlers in copper ore mines, Transport Przemysłowy i Maszyny Robocze, 2(8).
• LODEWIJKS G., 1995, The rolling resistance of conveyor belts, Bulk Solids Handling, Vol. 15, No. 1, January/March.
• SPAANS C., 1991, The Calculation of the Main Resistance of Belt Conveyors, Bulk Solids Handling, Vol. 11, No. 4, pp. 809–826, November.
• SUCHORAB N., 2019, Specific energy consumption – the comparison of belt conveyors, Mining Science. Vol. 26, pp. 263–274.
• UTH F., POLNIK B., KURPIEL W., BALTES R., KRIEGSCH P., CLAUSEN E., 2019, An innovtive person detection system based on thermal imaging cameras dedicate for underground belt conveyors, Mining Science, Vol. 26, pp. 263–276.
• WHEELER C., MUNZENBERGER P., 2009, Predicting the Influence of Conveyor Belt Carcass Properties on Indentation Rolling Resistance, Bulk Solids and Powder: Science and Technology, Vol. 4, pp. 67−74.
• WHEELER C., MUNZENBERGER P., 2011, Indentation rolling resistance measurement, International Materials Handling Conference (Beltcon 16).
• WOŹNIAK D., 2020, Laboratory tests of indentation rolling resistance of conveyor belts, Measurement (London), Vol. 150, pp. 1–7.
• WOŹNIAK D., GŁADYSIEWICZ L., KONIECZNA M., 2018, Experimental tests of the impact of selected parameters on the indentation rolling resistances, [in:] XVIIth Conference of PhD Students and Young Scientists, EDP Sciences, art. 00002, pp. 1–10, E3S Web of Conferences, ISSN 2267-1242, Vol. 29.
• QIU X., 2006, Full Two-dimensional Model for Rolling Resistance: Hard Cylinder on Viscoelastic Foundation of Finite Thickness, Journal of Engineering Mechanics, Vol. 132, No. 11, pp. 1241–1251.
• LIU X., HE D., LODEWIJKS G., PANG Y., 2019, Integrated decision making for predictive maintenance of belt conveyor systems, Reliability Engineering and System Safety, Vol. 188, May, pp. 347–351.