Rock drilling machine

Details Rock drilling machine Rock drilling machine

E - Fixed Constructions

21

B

E21B 17/03 (2006.01) B23B 45/16 (2006.01) B25D 17/08 (2006.01) E21B 6/00 (2006.01)

Patent

CA 2426400

Rock drilling machine provided with a housing (1), a hammer piston (2) movable to-and-for in the housing, a drilling toll (3) and a guide for the drilling tool. The guide (4) consists at the surface against the drilling tool (3) of polyethyleneterephthalate.

L'invention concerne une perforatrice de roches comprenant un boîtier (1), un piston-marteau (2) pouvant être soumis à un mouvement de va-et-vient dans le boîtier, un outil perforateur (3) et un élément de guidage pour l'outil perforateur. Cet élément de guidage (4) est constitué de polyéthylènetéréphtalate au niveau de la surface contre l'outil perforateur (3).

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