EP 0520909 A1 19921230 - Tunnelling machine having a cutting head, the position of which can be controlled.
Title (en)
Tunnelling machine having a cutting head, the position of which can be controlled.
Title (de)
Tunnelvortriebsmaschine mit einem in der Position regelbaren Schneidkopf.
Title (fr)
Tunnelier comprenant une tête de coupe dont la position est réglable.
Publication
Application
Priority
FR 9108051 A 19910628
Abstract (en)
The tunnelling machine comprises a cylindrical shield (2) carrying a disc-shaped cutting head (8) which is mounted rotationally along an axis (Y-Y') parallel to that of the shield (2). Between the said annular part (10) of the cutting head (8) and a cylindrical internal surface (5a) of the end of the shield (2), there is inserted at least one ring (19) whose inner outline is a circle (C1) centred on the axis (X-X') of the cutting head and whose outer outline, forming an eccentric, is a circle, the centre of which is offset with respect to the axis (Y-Y') of the cutting head. The invention may be used for compensating for the wear of the cutting heads and for producing additional lateral cuts in the ground for directing the tunnelling machine into the bends. <IMAGE>
IPC 1-7
IPC 8 full level
E21B 7/06 (2006.01); E21D 9/08 (2006.01); E21D 9/087 (2006.01); E21D 9/10 (2006.01)
CPC (source: EP)
E21B 7/068 (2013.01); E21D 9/0879 (2016.01); E21D 9/1093 (2013.01)
Citation (search report)
- [A] DE 3545765 A1 19870625 - GEWERK EISENHUETTE WESTFALIA [DE]
- [A] FR 2299495 A1 19760827 - GEWERK EISENHUETTE WESTFALIA [DE]
- [A] DE 2545041 A1 19770421 - PEINER MASCH SCHRAUBEN
- [A] EP 0410353 A1 19910130 - ISEKI KAIHATSU KOKI [JP]
- [A] US 3667556 A 19720606 - HENDERSON JOHN KELLER
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0520909 A1 19921230; EP 0520909 B1 19951227; AT E132228 T1 19960115; DE 520909 T1 19930519; DE 69207084 D1 19960208; DE 69207084 T2 19960919; ES 2036997 T1 19930616; FR 2678296 A1 19921231; FR 2678296 B1 19931029; GR 930300048 T1 19930630
DOCDB simple family (application)
EP 92401821 A 19920626; AT 92401821 T 19920626; DE 69207084 T 19920626; DE 92401821 T 19920626; ES 92401821 T 19920626; FR 9108051 A 19910628; GR 930300048 T 19930630