Tensioning a longwall mineral mining installation
AssigneeGewerkschaft Eisenhutte Westfalia
InventorsWalter Weirich, Michael Dettmers, Christoph Rassmann, Willi Heyer, Herbert Beyer, Horst Linke
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Abstract
Mining apparatus comprises a longwall conveyor and tensioning means for tensioning the conveyor in its longitudinal direction. The tensioning means is constituted by a plurality of hydraulic tensioning rams, each of which is mounted, in use, by means of pivot joints at each end thereof directly between the conveyor and a respective roof support unit of a roof support assembly. Each tensioning ram extends at an acute angle to the longitudinal axis of the conveyor. The tensioning rams are positioned in two groups, one in each end zone of the conveyor.
Claims29
A mining apparatus, comprising:
- (a) a longitudinally oriented longwall mineral mining installation,
- (b) a longitudinally oriented roof support assembly disposed adjacent and generally parallel to said installation, said roof support assembly comprising a plurality of roof support units,
- (c) means for longitudinally tensioning the installation comprising two groups of hydraulic tensioning rams, each group being disposed at a respective end zone of the installation, and
- (d) a plurality of attachment joints individually mounting the ends of each hydraulic tensioning ram directly between the installation and a respective roof support unit with each ram lying at an acute angle to the longitudinal axis of the installation, whereby the selected and controlled extension of the rams serves to longitudinally tension the installation.
Mining apparatus for use in a longwall working, the apparatus comprising:
- a longitudinally oriented longwall conveyor including a plurality of channel sections joined end to end, a roof support assembly including a plurality of roof suport units positioned side-by-side along the goaf side of the conveyor, and tensioning means positioned in two groups, one in each end zone of the conveyor, for tensioning the conveyor in its longitudinal direction, said tensioning means comprising a plurality of hydraulic tensioning rams, a plurality of pivot joints individually mounting the ends of each ram directly between the conveyor and a respective roof support unit, the axes of the pivot joints extending substantially at right-angles to the floor of the working, and each tensioning ram extending at an acute angle to the longitudinal axis of the conveyor.
Dependencies are inferred from the claim text.