Mine Electric Locomotives Transportation Is An Extremely Important Part Of Mine Transportation.
Mine Electric Locomotives transportation is an extremely important part of mine transportation. Mine Electric Locomotives is widely used in mine surface and underground transportation, and is the main way of long-distance transportation in mine horizontal roadway. When the Mine Electric Locomotives is running, there will be some mechanical or electrical failures, which will bring great economic losses to the coal mining enterprises. Therefore, the prevention and treatment of common faults of Mine Electric Locomotives can not only improve the operation rate of Mine Electric Locomotives and ensure the smooth operation of the mine transportation system, but also play an important role in improving the economic and social benefits of the mine.
The Mine Electric Locomotives is one of the important transportation tools in the coal mine transportation, especially in the long distance horizontal roadway (the slope is below 3~5%). Its main advantages are large transportation capacity (due to high operation speed) and low transportation cost (due to less auxiliary personnel, simple maintenance and low power consumption); It is of great practical significance for the harmonious and healthy development of coal mines to study the common faults and preventive measures of Mine Electric Locomotives.
1 Classification of Mine Electric Locomotives
The Mine Electric Locomotives is divided into two types: the overhead line type and the battery type. The wire type Mine Electric Locomotives can be used in the main air inlet roadway of non gas mines and primary and secondary gas mines, and can also be used in the main air inlet roadway of arch lining in tertiary gas mines with the approval of the provincial (district) coal industry bureau. The battery Mine Electric Locomotives is expensive and needs to be charged frequently, so it can only be used in places where the overhead electric locomotive is not allowed.
For example, in the air inlet roadway of Class III and super gas mines with no gas emission or coal and gas outburst coal seams, mining safety battery Mine Electric Locomotives should be used. The overhead trolley adopts DC power supply, with two voltages of 250V and 550V. In the traction converter room, the AC power is changed into DC through AC equipment. The current is transmitted by overhead lines erected above the transport track. The current is introduced into the motor of the trolley through the pantograph of the trolley, and returned to the AC room through the track to form a current loop. After the motor runs, Mine Electric Locomotives drives the wheels of the electric locomotive to rotate, so the traction Mine Electric Locomotives and its towed tramcar run on the track. DC overhead locomotives and battery locomotives are widely used in coal mines. The main advantages of the stringing Mine Electric Locomotives are its simple structure and reliable operation. The main disadvantage is that the electric arc sparks will be generated between the stringing and the pantograph of the electric locomotive, which limits its use in the coal mine. Therefore, the stringing Mine Electric Locomotives is mainly used in the main transport roadway of non gas mines and low gas mines with full air pressure ventilation. In the latter case, incombustible materials must be used for roadway support.
