Why doesn't the train drive directly?
Well, no matter what kind of motorcycle, and ultimately comes from the traction motor shaft to drive. Except for only a few of the rail cars, and cars as they are, need to gear, a clutch, as the golden eagle is one such heavy rail vehicles.
Electric locomotive structure is relatively simple, there is a large transformer, on the locomotive pantograph catenary power led to the locomotive, through the transformer for the traction motor, general AC drive electric locomotive. The power is from the power plant, if you have seen the electric railway will understand in the gasification. The railway over the erection of power catenary, above the general are DC high voltage 25KV or 27.5KV, the electricity from the substation, the substation electricity comes from power plants. There is a electric locomotive pantograph, ha ha is your so-called brush, it put the high-voltage lead to the locomotive, so that if a motor vehicle can contact driving
Modern power train basic has two kinds, one is a diesel locomotive, electric locomotive, steam locomotive basically all eliminated. There is a high-power diesel locomotive diesel engine, by which to drive the main generator synchronization, and then use these to drive the electric traction motor, a traction motor in the train each axis is driven by the motor, driving the train, the locomotive is by AC - DC drive, rather than as a motor vehicle as a direct role in the wheel;
Train and car driving is not the same, good to open the train, the normal one minute can be learned, but a good hard, train drivers are highly professional, what should be, after all the major responsibility for train drivers, it is almost always a big accident. The railway system in our country at present is not very mature, the country is also not satisfied with the status quo of the railway, so the railway is now stepping up time of reform.
