Cutting apparatus and method of operating
AssigneeSandvik Intelectual Property AB
InventorsBernhard EBNER, Hubert KARGL
Life of this patent
Estimating the term…
Abstract
A cutting apparatus suitable for creating tunnels and subterranean roadways includes independently pivoting supports that each carry a respective, independently pivoting arm and a rotatable cutting head. Each cutting head, via the supports and arms, is configured to slew laterally outward in a sideways direction and to pivot in a vertical upward and downward direction. The supports and arms are mounted on a linear moving sled carried by a main frame.
Claims15
A cutting apparatus suitable for creating tunnels or subterranean roadways and the like comprising:
- a main frame having a plurality of regions facing in a first direction, a second direction opposite to the first direction and a third direction perpendicular to the first and second direction and to a lengthwise direction;
- a first and a second arm each pivotally mounted via a respective arm pivot axis aligned in a direction extending transverse including perpendicular to the first and second direction to enable the first and second arms to pivot independently of one another in the first and second direction;
- at least one first and second arm actuator to actuate independently pivoting movement of the first and second arms relative to the main frame;
- and
- a rotatable cutting head mounted at each of the first and second arms.
A method of operating a cutting apparatus for creating tunnels or subterranean roadways and the like, the cutting apparatus comprising:
- providing a main frame having a plurality of regions generally facing in a first direction, a second direction opposite to the first direction and a third direction perpendicular to the first and second direction and to a lengthwise direction, a first and a second arm each pivotally mounted via a respective arm pivot axis aligned in a direction extending transverse including perpendicular to a first and second direction to enable the first and second arms to pivot independently of one another in first and second direction, at least one first and second arm actuator to actuate independently pivoting movement of the first and second arms relative to the main frame, and a rotatable cutting head (128) mounted at each of the first and second arms;
- a positioning step of pivoting the first and second arm in the second direction such that each cutting head is tilted forward by a sump-in-angle with respect to a sump-in plane with a forwardmost edge of the cutting head being further in the second direction than its rearwardmost edge;
- and
- a cutting step including pivoting the first arm and pivoting the second arm while rotating the cutting head and engaging the rotating cutting head into a rock face.
Dependencies are inferred from the claim text.