ALGORITHM FOR CALCULATING THE STRENGTH OF THE CONVEYOR BELT WITH HOLES

Abstract

A model is built and the stress-strain state of a conveyor belt with regularly spaced holes for removing moisture from material and cargo is investigated. The model comprehensively takes into account the following. The tape is reinforced with parallel rectilinear, regularly spaced elements. They are interconnected by an elastic sheath. The deformation of the components of the tape obeys Hooke's law. Reinforcement elements have been partially removed in the strip along with the shell. It was found that each continuous element of the belt reinforcement adjacent to the hole is loaded to the maximum. The greatest mutual displacement of reinforcement elements is observed between a continuous element and an adjacent element with a discontinuity. The extreme value of the relative displacement is observed in the section of the end of the reinforcement elements. Cross-sections of the tape passing along the edges of the holes are dangerous in terms of the strength of the tape. These sections are curved more during the conveyor operation. An algorithm for determining the internal tensile forces of the reinforcement elements and the shear angles of the material of the elastic shell located between the reinforcement elements of the tape is formulated. The algorithm is based on solving the equilibrium equations for reinforcement elements connected by an elastic shell. It takes into account the layout and dimensions of the holes, the mechanical properties of the elements of the reinforcement and elastic shell, the design of the tape.