EP 1344894 A1 20030917 - CUTTER HEAD AND ROCK EXCAVATOR
Title (en)
CUTTER HEAD AND ROCK EXCAVATOR
Title (de)
SCHNEIDKOPF UND AUSBRECHVORRICHTUNG FÜR FELSGESTEIN
Title (fr)
TETE DE COUPE ET EXCAVATRICE DE ROCHE
Publication
Application
Priority
- JP 0111043 W 20011217
- JP 2000385172 A 20001219
Abstract (en)
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). <IMAGE>
IPC 1-7
IPC 8 full level
E21D 9/08 (2006.01); E21C 25/18 (2006.01); E21D 9/10 (2006.01)
CPC (source: EP US)
E21C 25/18 (2013.01 - EP US); E21D 9/1013 (2013.01 - EP US)
Citation (search report)
See references of WO 0250401A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
EP 1344894 A1 20030917; AU 2266202 A 20020701; JP 2002188394 A 20020705; US 2003230925 A1 20031218; WO 0250401 A1 20020627
DOCDB simple family (application)
EP 01271488 A 20011217; AU 2266202 A 20011217; JP 0111043 W 20011217; JP 2000385172 A 20001219; US 46332903 A 20030618