Drive assembly for mining machine cutter drum

Details Drive assembly for mining machine cutter drum Drive assembly for mining machine cutter drum

1984-01-03

1986-04-15

Novosad, Stephen J.

Mining or in situ disintegration of hard material

Hard material disintegrating machines

Cutter shiftable vertically

299 78, 299 89, E21C 2720

Patent

active

045823634

ABSTRACT:
A continuous mining machine includes a mobile body portion with a cutter drum member rotatably mounted on the front of a boom member which extends forwardly of the body portion. The cutter drum member has an intermediate drum section and a pair of canted end drum sections. Driven input shafts extend through openings between the intermediate section and the end drum sections. Each input shaft is drivingly connected to a first stage of a two stage planetary gear assembly which surrounds an end drum drive shaft that extends the length of each end drum section. A second stage of the planetary gear assembly is drivingly connected to and is axially aligned with the first stage to transmit rotation outwardly to the end of the end drum section. A shearable driving coupling is axially positioned on the end drum drive shaft at the end of the end drum section. An external portion of the drive coupling is connected to the second stage and an internal portion is connected to the end drum drive shaft. The drive coupling transmits rotation from the second stage to the end drum drive shaft and therefrom to a drive shaft for rotating the intermediate drum section. In the event the load on the end drum section during the mining operation exceeds a predetermined magnitude, the drive coupling shears to prevent damage to the other drive components under overload conditions.

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