Driving arrangement for longwall mining machines

Patent · Tue Jun 12 04:00:00 EDT 1984

OSTI ID:6415845

Knorr, V

The invention is particularly adapted for use with a longwall mining machine of the type having a rack extending along a track for the mining machine, a gear wheel on the machine engageable with the rack for moving the machine along a track, at least two shearer drums carried by the machine, at least one driving motor on the machine, and gear train means connecting the driving motor to the shearer drums to rotate the same. Two inductive clutches having a common armature are connected through reduction gearing to the aforesaid driving gear wheel; while separate rotors connect the respective clutches to the gear train such that one rotor will rotate in a direction opposite to the other. A magnetically-actuated, spring-biased friction brake is disposed between the two inductive clutches for braking the clutches when the machine is at rest. The invention provides a self-contained driving unit for both the shearer drums and the driving gear wheel without materially increasing the length of the machine in order that it can be used in thin mineral seams.

• Assignee: Gebr. Eickhoff Maschinefabric and Eisengiesserei M.b.H. (Germany, Federal Republic of)
• Patent Number(s): US 4453774
• OSTI ID: 6415845
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420206* -- Engineering-- Mining & Drilling Equipment & Facilities-- (1980-1989)
BRAKES
COAL DEPOSITS
COAL SEAMS
CUTTER LOADERS
DESIGN
DIMENSIONS
EQUIPMENT
GEARS
GEOLOGIC DEPOSITS
LONGWALL MINING
MACHINE PARTS
MINERAL RESOURCES
MINING
MINING EQUIPMENT
RESOURCES
SHEARER LOADERS
THICKNESS
UNDERGROUND MINING