Abstract
The publication presents the results of measurements of the operating parameters of the drum drive of a belt conveyor operating in a copper ore mine. The laboratory and industrial tests of belt conveyor components so far have largely focused on idler sets, the belt and the conveyor route. The authors of the publication notice that the subject literature lacks information on research into the coefficient of friction between the belt and the drum in an industrial facility under real conditions, which may imply that the phenomenon of driving force transmission from the drum surface to the belt has not been thoroughly explored. The investigations described in the publication were aimed at determining the kinetic coefficient of friction between the conveyor belt and the lining of the drive drum under operating conditions. In the first part of the study, preliminary laboratory tests were carried out, whereas in the second part of the study, a mobile, non-invasive measurement system was applied, which allowed for recording the kinematic and dynamic parameters of the conveyor’s operation. During the several dozen minutes of the conveyor’s operation, there were several start-ups and brakings as well as periods of steady operation under variable load on the material handled. The non-typical planned sequence of switching on the drive motors caused a temporary slip of the belt on the drive drum surface during one of the start-ups. The recorded parameters of the conveyor operation enabled determining the operational limit value of the friction coefficient between the belt and the lining of the drive drum.
Highlights
Belt conveyors belong to the most effective means of transporting loose materials
The belt tensioning force is a parameter controlled by the tensioning system, the wrap angle depends on the geometric configuration of the drive drums, while the value of the friction coefficient is most often determined on the basis of tests carried out in laboratory conditions Fig. 1
They can demonstrate the correct operation of conveyors, and indicate errors in design assumptions, calculations and selection of conveyor components, resulting in reduced durability of components and lower reliability of the conveyor, which translates into increased operating costs
Summary
Belt conveyors belong to the most effective means of transporting loose materials. Global trends in the development of the raw materials industry, in which conveyor transport systems are of crucial importance, force the design of ever longer and effective haulage routes. There are many IT tools available to support the proc- into the kinetic friction coefficient and an original method of its deess of designing belt conveyors They use various calculation mod- termination applied directly in the actual conditions of the belt conels, such as those specified in the CEMA and DIN 22101 standards, veyor’s operation. As well as proprietary methods developed in research centres, e.g. at the University of Hannover, Wrocław University of Technology or the AGH University of Science and Technology All these methods require defining unambiguous input parameters, the values of which should be verified in laboratory and industrial tests on real objects. One of the current design trends is to apply a new type of rubber-
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