Nomerovsky D. Substantiation of methods of calculating the parameters of high-angle conveyors for transport of goods lumpy in mining enterprises.

The purpose of the work is to establish the patterns of change in the stability of bulk cargo on the steeply inclined belt conveyor from grain-size composition, structure, material properties, structure and complexity of the assembly line operation for selecting rational parameters of steeply inclined conveyors and justification of the methods of their calculation. The object of study - the process of transporting bulk cargo lumpy steeply inclined conveyors. Subject of research - pattern parameter changes steeply inclined conveyors and methods to improve the stability of the load on the steeply inclined conveyor belt when operating in conditions of mining enterprises. Methods: the work is done because of an integrated approach. In developing, the mathematical and probabilistic models used methods of classical mechanics and the theory of probability. In determining the sustainability criteria according to the load operation, diagnostics and experimental data used statistical methods. Dynamic models of conveyor assemblies were designed using the methods of classical mechanics and statistical mechanics, and the model of "external" effects - on the basis of the theory of granular medium. In experimental studies, the methods used vibrodinamiki and strain measurement. Statistical analysis of the results was performed using the methods of mathematical statistics and Microsoft Office software Excel, MathCAD. Scientific results: the first is justified relationship between an inclination angle of the conveyor, grain size and height of the cargo partitions on a conveyor belt at the segregation among small-sized fractions. It was found that the ratio of the maximum size of the piece to the height of the partition should be at least two; first settled the relationship between the tension of the conveyor belt and the speed of transportation of lumpy cargo conveyor belt deep zholobchatosti. It is found that the maximum angle of inclination of the conveyor 85 varies asymptotically to 0 ° depending on the tension belt; first settled dependence of the limiting angle lumpy cargo transport on a conveyor belt with special carrying rollers of the conveying speed. It is found that with decreasing load mass riding transport speed is increased from 3 to 5 m / s. The practical significance of the results is as follows: developed a "method of calculation and choice of parameters steeply inclined and vertical conveyors",; developed "Recommendations for improving the steeply inclined and vertical conveyors and principles of design" for the design. Implementation of the results: To work out "procedure and select the settings for high-angle and vertical conveyors" and "Recommendations for improving the steeply inclined and vertical conveyors and principles of their design" were transferred to "Rune Engineering" Ltd., "Design Bureau" Ltd.,"Initiative" Ltd.,"Research and Design Center "DTEK"", SE "Ukrgipromez" developed and implemented high-angle conveyors at the production sites of "Rent-Prim" (Dnepropetrovsk) - КЛК-10-65 and LLC "Velta" (Kirovograd region.) - КЛ-27-65 , the operation of which is carried out within 10 months. Total estimated economic benefit of 650 000 UAH.