GENESIS OF EFFICIENCY OF STEEP ANGLE CONVEYOR BELTS

The review of the belt haulage transport currently in operation highlights inefficiency of increasing the belt angle and cargo weight using existing methods. The put forward steep angle conveyor belts equipped with fans of cross baffles make it possible to build up essentially both the belt angle and cargo weight owing to more effective filling of working space of the belt and better gravity counteraction. The proposed design of the belt conveyor will allow considerably improved dust control in conveyance of granular materials. The steep angle conveyor belt design is protected by patents for invention as intellectual property. The procedure for the steep angle conveyor belt design is adjusted regarding calculation of forces and stresses on clamping lever. The graphical and mathematical mo_dels are proposed to describe force interaction between the conveyor belt structure elements and the conveyed material. An equation of maximum bending moment governed by the structural peculiarities of the conveyor belt is obtained, which enables calculation of clamping lever geometry as well as the wanted prepressure force. It is found that the weight–angle curve of the steep angle conveyor belt given assigned capacity and haulage height is essentially nonlinear. Considering the limited angle of conveyor belts as steeper angles result in reduction in positive friction, the weight of conveyor belts grows in proportion to the increase in the hoist height of conveyed material at the preserved conveyance capacity. With regard to the influence exerted by friction coefficient, gravity and additional force on diaphragm, clamping lever and conveyor belt, the angle value range is optimized towards saving of material consumption at the pre-set capacity as against the known conveyor structures.

Keywords

Steep angle conveyor belt, cross baffles, angle, bulk material, clamping lever, pressure plot, bending moment.

Issue number: 5
Year: 2018
ISBN:
UDK: 621.604
DOI: 10.25018/0236-1493-2018-5-0-165-170
Authors: Makarov V. N., Potapov V. Ya., Makarov N. V., Ugolnikov A. V.

About authors: Makarov V.N., Doctor of Technical Sciences, Professor, Potapov V.Ya., Doctor of Technical Sciences, Professor, Makarov N.V., Candidate of Technical Sciences, Head of Chair, e-mail: mnikolay84@mail.ru, Ugolnikov A.V., Candidate of Technical Sciences, Assistant Professor, Head of Chair, Ural State Mining University, 620144, Ekaterinburg, Russia.

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