Reduction of load amplitudes on the drive of a mine horizontal belt conveyor by transportation route adjusting

The article examines the nature of the dependence of the amplitudes that arise on the drive of a mine belt conveyor from changes in the belt load, from the angle of transportation, as well as technological parameters of transportation and design parameters of the drive and the mechanical part of the conveyor. These amplitudes have a significantly affect to the resource of the mechanical and electrical parts of the conveyor, in particular: the conveyor belt, reducer, electric motor, etc. A mathematical model of the load amplitude formation on the elements of the mechanical and electrical parts of the belt conveyor drive due to the fluctuation of the belt load has been developed. The nonlinear nature of the amplitudes’dependence that arise on the mine belt conveyor drive from the variable load of the belt and from the angle of transportation has been established. Graphically and analytically, the characteristic angle of installation of the belt conveyor is determined, at which the moment of resistance does not depend on the belt load and will remain constant under the existing fluctuations in the amount of the mass of the cargo on the conveyor belt. Mining technical conditions that correspond to the transportation of bulk cargo by a belt conveyor at the installation angle described above are recommended as rational from the point of view of minimizing the amplitudes of loads on the conveyor drive, which is expected to increase the conveyor's resource and its reliability in general. The functioning of conveyors with minimum load amplitudes by the mechanical and electrical part of their drive corresponds to the operating conditions of horizontal and slightly inclined conveyors with the value of the angle transportation of the cargo down. The modulus of this angle is equal to the arctangent of the tape motion resistance coefficient.