E - Fixed Constructions – 21 – C
Patent
E - Fixed Constructions
21
C
262/52
E21C 25/06 (2006.01) E21C 29/02 (2006.01) E21D 9/10 (2006.01) E21D 9/12 (2006.01) E21D 23/00 (2006.01)
Patent
CA 1102827
TITLE UNDERGROUND MINING MACHINE ABSTRACT OF THE DISCLOSURE An improved mining machine is disclosed, which is utilized for entry driving and forming cross cuts in a multi- entry underground mine. The mining machine consists of a main frame having a front portion and a rearwardly ex- tending portion, and cutter heads disposed for movement across the front portion for dislodging mineral. A conveyor system is provided which extends across of the front of the main frame and along the rearwardly extending portion thereof for carrying dislodge mineral from the mine face. Forward roof support jacks, which are attached to the main frame for unitary movement therewith, provide temporary roof support as the entry is being formed. Rear roof support jacks, disposed behind the forward roof support jacks, also provide temporary roof support. Sumping cylinders, which are disposed generally parallel to the mine floor, connect the rear roof support jacks to the main frame and are used for moving the mining machine. The sumping cylinders are connected to the main frame with a universal joint connection to permit free movement of each sumping cylinder around its point of connection to the main frame. Steering cylinders, for positioning the sumping cylinders, are connected between each sumping cylinder and the main frame. Pivot jacks are provided on the main frame that extend to provide a pivot point around which the main frame can be moved by extending the sumping cylinders. By proper positioning of the sumping cylinders and their associated rear roof support jacks, the main frame can be moved and steered in a desired direction. The disclosed mining machine can be turned perpendicular to the entry being formed for the purpose of making a cross- cut to a parallel extending entry. The mining machine includes roof bolters, attached to the rear roof supports, for installing a series of roof bolts as the machine advances. Rib cleaners are provided for cleaning the mine ribs as the machine forms the entry.
332695
Damron Earl M.
Lipps Jack I.
Acme Machinery Company
Borden Ladner Gervais Llp
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