Electromagnetic method of improving the adhesion of electric locomotive wheels to rails

Abstract

In mine conditions, the track profile of an electric locomotive haulage system is usually very complex. There are significant changes in track gradients, small radii of curves, sharp transitions from one radius of curves to another, etc. This causes a sharp change in the magnitude of the resistance forces to the train movement and, consequently, in the traction force of the electric locomotive. The change in traction force is also caused by frequent starting of the locomotive at very short track distances. Improvement of traction conditions can be achieved by correction of haulage tracks, elimination of sharp breaks in the track profile and small radii of curves, application of a heavy rail profile. In this light, the possibility of increasing the coefficient of adhesion of electric locomotive wheels to rails by electromagnetic means should also be considered. The magnetic attraction forces arising between the links of the magnetic force line contour can create additional electromagnetic coupling between the wheel and the rail. To this end, a force magnetic field closed along the points of contact between the electric locomotive and the rails should be created.

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