Analysis of forced vibrations of conveyor belts

Abstract

The paper presents the study of forced transverse vibrations of conveyor belts. Those are caused by rollers having an eccentricity, which originates either from production errors or transported material sticking to bearing rollers of the lower conveyor branch. The dynamic behavior of the belt was analyzed by solving a boundary problem described by differential equations expressed in partial derivatives and corresponding boundary conditions. The solution helped to determine modal parameters of the system – eigenfrequencies and eigenforms of vibrations, which, in their main modes, would be the basis of practical recommendations for selecting such parameters of conveyor systems and their operational modes which could prevent the system from getting into a resonance state.

Conventional Selection of Mechanical Fasteners for Flat Belts

“…The disadvantages include the occurrence of transverse vibrations of the conveyor belts. These vibrations are caused by the eccentricity of the rollers, which results from production errors or from sticking of the transported material to the support rollers of the lower branch of the conveyor [5]. The properties of the conveyor belt itself are also very dependent on thermal and humidity conditions [6].…”

“…Figure 2 shows detail B in Figure 1, thanks to which it is possible to calculate the inclination angle θ of the resultant force vector Q, which is needed to decompose this force into a vertical and a horizontal component Q x and Q y . Two auxiliary parameters x and y were introduced, and the angle θ was calculated using trigonometric functions (5) and (6).…”