Cutter head and rock excavator

Abstract

The present invention relates to a cutter head and a rock excavator provided therewith utilized for excavating base rocks in free section to proceed excavating a mine gallery, a tunnel, a shaft and the like. In the conventional excavator having the construction in which the base rock is cut against the tensile strength of the base rock by a disk roller cutter, the cutter receives reaction from the base rock in the vicinity of coming in contact with rocks to be pushed back to make it difficult to form a deep cut-in in the base rock. Therefore, two kinds of disk roller cutters ( 3, 4 ) having different cutting-lines with a direction of a support shaft and a position of a disk edge differentiated are arranged on a cutter head drum ( 2 ), and one is a disk roller cutter for undercut for cutting off the base rock whereas the other is a disk roller cutter for scraper for crushing the base rock to constitute a cutter head ( 1 ).

1 . A cutter head characterized in that two kinds of disk roller cutters having different cutting lines with a direction of a support shaft and a position of a disk edge differentiated are arranged on a cutter head drum, and one is a disk roller cutter for undercut for undercutting the base rock whereas the other is a disk roller cutter for scraper for crushing the base rock.  
     
     
         2 . The cutter head according to  claim 1 , wherein the two kinds of disk roller cutters are arranged in many rows front and rear, and in the vertical direction.  
     
     
         3 . The cutter head according to  claim 1  or  2 , wherein the disk roller cutter includes a both-side type disk roller cutter having disks disposed on both sides.  
     
     
         4 . The cutter head according to any of  claims 1  to  3 , wherein a button roller cutter for scraper, a rotating-type round pick, a fixed bit or a cutting-buried-type tip is mounted in place of the disk roller cutter for scraper.  
     
     
         5 . The cutter head according to any of  claims 1  to  4 , being equipped with a mucking vent.  
     
     
         6 . A rock excavator characterized in that the cutter head according to any of  claims 1  to  5  is mounted on an excavating boom.  
     
     
         7 . A rock excavator of a road-header type characterized in that a shaft of the cutter head according to any of  claims 1  to  5  is mounted nearly parallel to a shaft of an excavating boom.  
     
     
         8 . A rock excavator of a road-header type characterized in that a shaft of the cutter head according to any of  claims 1  to  5  is mounted nearly vertical to a shaft of an excavating boom.  
     
     
         9 . A rock excavator of a shovel type characterized in that the cutter head according to any of  claims 1  to  5  is mounted as an attachment.  
     
     
         10 . A rock excavator of a surface-miner type characterized in that the cutter head according to any of  claims 1  to  5  is mounted.