Support for movable segments in a rack for a drum cutter mining

Details Support for movable segments in a rack for a drum cutter mining Support for movable segments in a rack for a drum cutter mining

1978-05-01

1979-05-22

Purser, Ernest R.

Mining or in situ disintegration of hard material

Hard material disintegrating machines

Sidewall-working

E21C 2902

Patent

active

041556003

ABSTRACT:
A rack device consisting of movable and immovable rack segments extends along a face conveyor for a mining machine having a drive gear engageable with the rack device to propel the machine along the working face of a mine. Rack holders are fixedly connected to conveyor pan sections joined together for pivotal movement to form the face conveyor. The rack segments are coupled to spaced-apart rack holders by pivot shafts. The immovable rack segments extend along a single conveyor pan section while each movable rack segment bridges a joint between conveyor pan sections. Pivot shafts for the movable rack segments are received in elongated slots in the rack holders whereby the movable rack segments move through a gap distance formed by a clearance between the pivot shaft and the slot. This gap distance is greater in magnitude than the clearance between the joined conveyor pan sections.

REFERENCES:
patent: 4082361 (1978-04-01), Laneermann

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