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Coal mining operations have evolved from semi mechanization in the 1950s to comprehensive mechanization in the 1980s.
2021-03-17
Coal mining operations have evolved from semi mechanization in the 1950s to comprehensive mechanization in the 1980s. The comprehensive mechanization of coal mining is widely used, including shallow and deep double (single) drum combined shearers (or planers), flexible scraper conveyors, and hydraulic self moving supports, to achieve comprehensive mechanization in the crushing, coal loading, transportation, support and other aspects of the mining face. The double drum shearer is a coal falling machine. The electric motor passes through the cutting part of the reducer to transmit power to the spiral drum for coal falling, and the movement of the machine is achieved by the electric motor passing through the traction part of the transmission device. There are basically two types of traction methods, namely anchor chain traction and non anchor chain traction. Anchor chain traction is achieved by meshing the sprocket of the traction part with the anchor chain fixed on the conveyor.
Outrigger
RELEVANT INFORMATION
2019-01-09
The crushing operation is often divided into coarse crushing, medium crushing
2019-01-09
2019-01-09