Longwall mining system

Details Longwall mining system Longwall mining system

1981-02-24

1983-05-10

Purser, Ernest R.

Mining or in situ disintegration of hard material

Hard material disintegrating machines

With mine roof-supporting means

299 43, E21C 2724, E21C 2902

Patent

active

043826334

ABSTRACT:
A longwall mining system includes a bidirectional shearer and a roof supporting structure. The shearer includes a pair of angled floor drums, a pivotable roof drum and a loading conveyor. Each drum has a plurality of picks disposed about the drum surface for cutting a material to be mined and a plurality of vanes disposed on the drum surface for carrying the cut material to the loading conveyor. The roof supporting structure includes a load carrying shield which is braced by a pair of supports. The supports are located under the shield in a position between the shearer and a face conveyor. The face conveyor, which is fed by the loading conveyor, carries the mined material to main conveyor for haulage to the outside.

REFERENCES:
patent: 2716025 (1955-08-01), Malloy et al.
patent: 3290096 (1966-12-01), Stalker
patent: 3954302 (1976-05-01), Browning
patent: 3958830 (1976-05-01), Johns

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