Mining or in situ disintegration of hard material – Hard material disintegrating machines – Stepper-type advance-causing means
Patent
1981-04-24
1983-06-21
Purser, Ernest R.
Mining or in situ disintegration of hard material
Hard material disintegrating machines
Stepper-type advance-causing means
299 43, E21C 2902
Patent
active
043890725
ABSTRACT:
A mineral mining installation comprises a longwall conveyor, a plough movable to and fro along a guide fixed to the face side of the longwall conveyor, and a drive station at one end of the longwall conveyor. The drive station includes a drive frame supporting drive means for driving the longwall conveyor. A support beam is provided at the goaf side of the drive station. The support beam extends substantially parallel to the drive frame. A floor plate extends beneath the drive frame. The goaf-side end portion of the floor plate is supported on the support beam by means of a lifting device, whereby the goaf-side end portion of the floor plate can be moved up and down relative to the support beam by the lifting device.
REFERENCES:
patent: 3504944 (1970-04-01), Holz et al.
patent: 4176884 (1979-12-01), Erwien et al.
Beyer Herbert
Erwien Helmut
Grundken Dieter
Kerklies Bodo
Kumor Bernd
Gewerkschaft Eisenhutte Westfalia
Purser Ernest R.
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