MGC1.7-9DFixed mine wagon is a transportation tool for moving coal, ore, waste rock and material in the process of mining, dragged by a locomotive or winch. Its basic components are carriage, wagon frame, buffer device, coupling and travel mechanism.

Using mine gate or loader for loading. In the 1970 of the 20th century, China has developed bucket reproduced train, made up of dump, lifting form and a series of coal mine cars. The dump after full loading, unloading to each coal mine car carriages by the lifting form along the tramway. This method improves the speed of handling, realize the continuous loading of coal mine wagon. Bucket load wagon has simple structure, small turning radius, can be modified by standard coal mine car. Mine car wheel rim on the inside, there is a gap between the wheel flanges and Rails.

MGC Coal Mine Wagon carriage and frame joined, flipped with a dumper to unload. Frame can withstand the traction and braking force, reduce impact. Bumpers mounted on both ends of the frame in order to ease the impact between the two cars. Join is a join of locomotive and wagon, commonly used implant links and rotating chain, high capacity mine wagon using automatic couplers that combination of buffer. Travel mechanism is made up of 4 wheels and 2 axes of the two wheel sets.

Coal mine wagon and the sum of more than 20 tons of materials, should increase the number of wheels.

For more coal mine wagon than has more than two wheel sets, in order to through curve track, compose two wheel sets to form a bogies which is an vehicle equipped with a turntable.