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1. (WO2016055382) CUTTING APPARATUS AND METHOD OF OPERATING

Pub. No.:    WO/2016/055382    International Application No.:    PCT/EP2015/072847
Publication Date: Fri Apr 15 01:59:59 CEST 2016 International Filing Date: Sat Oct 03 01:59:59 CEST 2015
IPC: E21C 27/24
E21D 9/10
Applicants: SANDVIK INTELLECTUAL PROPERTY AB
Inventors: EBNER, Bernhard
KARGL, Hubert
Title: CUTTING APPARATUS AND METHOD OF OPERATING
Abstract:
A cutting apparatus (100) suitable for creating tunnels or subterranean roadways and the like comprising:a main frame (102) having regions (300, 301, 302) 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; first and a second arm (121) each pivotally mounted via a respective arm pivot axis (401) aligned in a direction extending transverse including perpendicular to the first and second direction to enable the first and second arms (121) to pivot independently of one another in the first and second direction, at least one first and second arm actuator (122, 130) to actuate independently pivoting movement of the first and second arms (121) relative to the main frame (102), and a rotatable cutting head (128) mounted at each of the first and second arms (121).