Longwall mining apparatus for working thick seams

Patent · Tue Oct 23 04:00:00 EDT 1984

OSTI ID:6085729

Lanfermann, W

A longwall mining machine and method for its use, the machine traveling over a face conveyor having a first toothed rack extending therealong. A gantry-like frame is movable along the face conveyor and has upstanding supports at its opposite ends which carry an upper track and a second toothed rack. A first mining machine frame is carried on the face conveyor and has drive pinion means engageable with the first toothed rack. A second mining machine frame is carried on the upper track of the gantry-like frame and has drive pinion means engageable with the second toothed rack. The first and second mining machine frames each having a shearer drum mounted thereon for cutting and removing a mineral seam. Means are provided for selectively securing the first and second mining machine frames to the gantry-like frame, the arrangement being such that when the first and second machines are secured to the gantry-like frame, the entire frame with both mining machine frames will traverse the face conveyor upon rotation of the drive pinion means on the first mining machine. At the end of a face area being mined, the lower mining machine frame is moved to a position where it is directly beneath the upper mining machine frame.

• Assignee: Gebr. Eickhoff Maschinenfabrik und Eisengiesserei mbH (Germany, Federal Republic of)
• Patent Number(s): US 4478457
• OSTI ID: 6085729
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
012000* -- Coal
Lignite
& Peat-- Mining
BELT CONVEYORS
COAL DEPOSITS
COAL SEAMS
CONVEYORS
CUTTER LOADERS
CUTTING MACHINES
DESIGN
DIMENSIONS
EQUIPMENT
GEOLOGIC DEPOSITS
HAULAGE EQUIPMENT
LOADERS
LONGWALL MINING
MATERIALS HANDLING EQUIPMENT
MINERAL RESOURCES
MINING
MINING EQUIPMENT
RESOURCES
THICKNESS
UNDERGROUND MINING