Beáta Stehlíková

Regression Model Design for the Prediction of Pipe Conveyor Belt Contact Forces on Idler Rollers by Experimental Tests

In this paper there is presented a possibility to estimate, with a sufficient accuracy, contact forces on idler rollers of hexagonal idler housing in case of the pipe conveyor belt. This prediction is based on values of tension forces that are measured experimentally. The calculated regressive models are able to predict contact forces in individual positions of idler rollers with suitable correctness. The measurements of tension forces were carried out on a static model of a pipe conveyor. This static model is able to simulate real operational conditions of idler rollers, which guide the conveyor belt. In this way it is very simply possible to determine contact force values in the individual positions of idler rollers. Information about contact forces is useful for designers and for users of the conveyor belts, as well.

Possibilities of Experiments and of Using Experimental Results Obtained from the Test Equipment for Measuring Properties of Conveyor Belts Pipe Conveyor

The publication deals with the test equipment for measuring properties of conveyor belts of pipe conveyor. The device was designed with the aim of setting tension force and measuring the contact forces at positions which correspond to positions of idlers at hexagonal idler housing of pipe conveyor. Contribution gives an overview of experimentally obtained statistics, relations and relationships. Presented several results of analyses focused on potential context between the information brought by experiments and practical application.

REGRESSION MODEL CHANGE OF NORMAL CONTACT FORCES IN HEXAGONAL IDLER HOUSING FOR PIPE CONVEYOR LOADED WITH TRANSPORTED MATERIAL

Pipe conveyors make up important elements of ecological transport systems. They ensure the material is transported in the conveyor belt coiled to the shape of a pipe. Various stresses impact their most important component the conveyor belt straining it in both, the longitudinal and the transverse direction. This phenomenon arises in connection with the shape of the conveyor route of the pipe conveyor, the width and thickness of the conveyor belt, the volume of the material conveyed, and the like. In recent years, more and more authors have been researching contact dependencies of the normal forces acting on the idler rolls located in idler housings. Their task is to design such structure of a conveyor belt that will put the least strain on the idler rolls, thus significantly reducing the power required to ensure the movement of the pipe conveyor. In this way, greater efficiency of eco-friendly transport will be achieved. Following experimental research, the paper describes a regression model of dependencies of normal contact forces on tension forces required, as per individual idler rolls in idler housing.