US 4,079,792 AGranted

Mine roof support for a mobile drilling machine

AssigneeMining Equipment Division, a division of FMC Corporation

InventorsEdwin B. Paul, Roy R. Denham

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Abstract

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 rotating 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.

Claims10

Dependent claims

A mobile drilling machine comprising,

a self-propelled body portion
an operator's platform extending forwardly of said body portion,
said operator's platform having a front end portion and a rear end portion,
a roof drilling unit mounted on said front end portion of said operator's platform and having a drill member extending upwardly therefrom and operable to drill bore holes in a mine roof,
elevating means for connecting said rear end portion of said operator's platform to said body portion to move said operator's platform to a first position on the mine floor for drilling operations and to a second position raised from the mine floor for tramming of said body portion with said operator's platform secured thereto,
actuating means connected to said elevating means for moving said operator's platform between said first position and said second position, and
roof support means supported by said operator's platform for engaging the mine roof to support the mine roof when said operator's platform is in said first position, said roof support means being movable on said operator's platform out of contact with the mine roof when said operator's platform is in said second position.

4 more elements

Dependencies are inferred from the claim text.