E - Fixed Constructions – 21 – D
Patent
E - Fixed Constructions
21
D
61/46
E21D 9/08 (2006.01) E21B 7/02 (2006.01) E21D 19/02 (2006.01) E21D 20/00 (2006.01)
Patent
CA 1067711
TITLE MINE ROOF SUPPORT FOR A MOBILE DRILLING MACHINE ABSTRACT OF THE DISCLOSURE A horizontal deck extends forwardly from a self- propelled body portion. An elevating mechanism pivotally connects the deck to the body portion for vertical movement of the deck into and out of position on the mine floor. A mast- type roof drilling unit is mounted on the front of the deck and includes a vertically movable drill pot for advancing a rota- ting drill rod into the mine roof for drilling a bore hole therein. The deck is positioned on the mine floor during the drilling operation. During tramming of the body portion the deck is raised to an elevated position above the mine floor. A roof support assembly is supported by telescoping devices above the deck to provide overhead protection for the machine operator during the drilling and tramming operations. During drilling the roof support assembly is raised to abut the mine roof and support the mine roof above the operator on the deck. To facilitate tramming the body portion, the deck is lowered from the mine roof a sufficient distance to permit raising the deck from the mine floor.
295092
Denham Roy R.
Paul Edwin B.
LandOfFree
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