Shield support assembly for underground mining and supporting surface element therefor
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United States of America Patent
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Apr 30, 2013
Grant Date -
Apr 28, 2011
app pub date -
Jun 16, 2009
filing date -
Jun 20, 2008
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A shield support assembly for underground mining includes a shield canopy and at least one floor runner as supporting surface elements. The shield canopy and at least one runner are connected in an articulated manner and can be pressed against rock at least one hydraulic cylinder which is supported in bearing pans on the shield canopy and floor runner. Each surface supporting element includes a welded construction of welded-together components. In order to be able to support higher forces without increasing the overall weight, at least one of the supporting surface elements includes at least one hollow metal box profile filled with a solid as a component of the welded construction.
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