Title:
【発明の名称】交換可能なビットを備えたトンネル掘削機械のためのローラビット
Document Type and Number:
Japanese Patent JP2002514702
Kind Code:
A
Abstract:
The invention relates to a roller bit for tunnel-boring machines. In preart embodiment types, the entire roller base body (1) always had to be replaced due to the manner in which the bits (3) or cutting points are fastened when the bits (3) were worn out, as they were braze welded or shrink fitted to the roller base body (1). According to the invention, the bits (3) or the cutting points are inserted in a detachable manner so that they can be changed out in the body (1) which carries them. The bits or cutting points can be replaced onsite in a problem-free manner.
Inventors:
Claus-Deter Sauer
Gunter Fennel
Ernst Heiderich
Bernd Reese
Reinhold Walther
Gunter Fennel
Ernst Heiderich
Bernd Reese
Reinhold Walther
Application Number:
JP2000548583A
Publication Date:
May 21, 2002
Filing Date:
May 10, 1999
Export Citation:
Assignee:
Vault Longyear Gesell Shaft Mitt Beschlenktel Haftung Und Companie Commande Gesell Shaft Hart Metal Werkzweig Fabrik
International Classes:
E21B10/10; E21B10/12; E21B10/20; E21B10/52; E21D9/10; (IPC1-7): E21D9/10; E21B10/10; E21B10/12; E21B10/20; E21B10/52
Attorney, Agent or Firm:
Toshio Yano (4 outside)