Cutting apparatus
AssigneeSandvik Mining and Construction Oy
InventorsMartin Gimpel, Hubert Kargl, Bernhard Ebner, Guenther Staber
Life of this patent
Estimating the term…
Abstract
A cutter head for excavating hard rock materials in rock face includes a carrier attachable to a cutter arm of a cutter machine and a drive shaft rotatably supported by the carrier. The drive shaft is rotatable about a drive axis and has at one end a support portion for mounting disc cutters. A plurality of disc cutters are mounted on the support portion and configured to perform undercutting against the rock face. Each disc cutter is rotatable about a respective support axis, the respective rotational axis of each disc cutter being configured to be substantially transverse to the rotational axis of the cutter head. A mining machine including the cutter head is also disclosed.
Claims17
A cutter head arranged for excavating hard rock materials in rock face, the cutter head comprising:
- a carrier attached to a cutter arm of a cutter machine, and a drive shaft rotatably supported by the carrier, the drive shaft being rotatable about a drive axis and including at one end a support portion for mounting disc cutters;
- and
- a plurality of disc cutters mounted on the support portion and configured to perform undercutting against the rock face, each disc cutter being undriven and freely rotatable about a respective support axis, wherein the disc cutters are attached on the support portion in a manner such that the support axes of the disc cutters extend to intersect with one another at the drive axis at an intersection point and lie within a common conical surface, and wherein the support axis of each disc cutter is inclined relative to the drive axis by a disc inclination angle, the disc inclination angle being in a range between 45 to 89 degrees.
Dependencies are inferred from the claim text.