Magnitude of train composition at transportation by contact electric locomotives along the main pumping excavations of coal mines

Abstract

In the practice of design and operation of mine electric locomotive traction is very important is the correct solution of the question of choosing the size of the train. In modern production practice, the solution of this question is essentially reduced to the choice of the coupling weight of the electric locomotive. Indeed, in spite of the fact that theoretically the optimum train size can vary within wide limits with an interval equal to one car, the coupling weight of the electric locomotive is taken not as required by the calculation for this train, but the nearest to the calculated one according to the standard. The final size of the train is usually taken from the condition of the maximum weight of the train for the selected electric locomotive size. Since there are only three standard values of the coupling weight of rolling electric locomotives, the same coupling weight of an electric locomotive is inevitably adopted for a very wide range of optimal train sizes.