Features of Work of Electric Locomotive Transport in the Conditions of Iron-Ore Mines
Authors: Kalmus Dmytro Olehovych , Filipp Yulii Borysovych , Beridze Tetiana Mykhailivna 
Published: October 2021

In the article the results of research of work of mine electric locomotive transport are driven. It is marked that increase of power efficiency of electrical equipment of mine are a necessary condition for the increase of booty of iron-ore raw material. Decision of task of increase of booty of iron-ore raw material related to development and improvement of underground transport. Forming of structure of moving of iron-ore raw material takes place under influence of many mining-and-geological, technical, technological and organizational factors that influence on the size of stream of the moved loads casual character. This is determine casual character of stream of raw material that is transported.
Mine electric locomotives are the basic type of transport that is used for moving of minerals within the limits of mountain drift. A model, that describes work of one electric locomotive enroute, that serves one point in that there is loading of minerals with one claotype ways, was considered. Realization of burst performance of mine electric locomotive is possible at reduction of time of his outages, that results in reduction of time of voyage and increase of middle rate of movement of rolling stock.
Research of work of electric locomotive transport in the conditions of iron-ore mine was shown, that time of voyage was in limits from 440 to 530 seconds, middle speed here changes a from 1,2 to 1,78 m/s, and distance, that passes an electric locomotive in times of one voyage, makes from 596,7 to 796 meters.
Importance of the modes of starting and braking was shown for realization of maximal properties on coupling of wheels of electric locomotive with rails and increase of the productivity of mine electric locomotives, and also factors that influence to work of mine electric locomotives in the mode of braking are considered.
For the power supply of mine electric locomotives a device is used for connecting to parts being under electric tension. This device, pantograph, by means of the special wire, carries out a contact and connecting of electric parts of electric locomotive to the electric station. On the value of tension of the electric station influences circumstance that she is connected to the sections of tires that conduct an electric current, to that other, more power-hungry consumers are connected. So, for example, at starting of a main vent setting, by power 1600 kilowatts, there is a considerable decline of output tension value of that were fixed in limits from 195 to 276 Volt. It becomes possible because of influence of powerful electrical equipment on work of other electrical equipment in the group systems of power supply. Partly this question can be decided due to the use of the systems facilitating starting of electrical equipment.
Basic factors, that influence to work of mine electric locomotives there are such that directly operate on the electromechanics system in the zone of contact of wheel with a rail (coefficient of rolling friction of wheels of electric locomotive with rails), and pantograph with a pin wire (level of tension of power supply of electromechanic). Therefore influence of these factors must be necessarily taken into account during work of mine electric locomotives. Other factors have casual character, and works of electric locomotives do not operate at all time, therefore, for reduction of their influence, a sufficient condition is implementation of preventive measures, such as introductions of the systems of the smooth starting, application of algorithms power effective management, systems of monitoring and diagnostics of work of equipment. The presence of wide range of initial conditions, such as variation of coefficient of rolling friction and rate of movement of electric locomotive, stipulates complication of calculations of descriptions of retrosystem.