Rock boring device

E - Fixed Constructions – 21 – D

Patent

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Details

E21D 9/10 (2006.01) E21C 25/16 (2006.01)

Patent

CA 2358828

A rock boring device (10) including a rotary disc cutter (11). The disc cutter (11) is driven in an oscillating manner and also driven or free to nutate, and the device includes a mounting section (22) for the rotary disc cutter and a driven section (21), and wherein the mounting section (22) is angularly offset from the axis of the driven section whereby the rotary disc cutter will both oscillate and nutate.

L'invention concerne un dispositif de forage de la roche (10) comprenant une lame à disque rotatif (11). Cette lame (11) est entraînée de façon oscillante et également entraînée de manière à être ou à ne pas être en nutation. Ce dispositif comprend une partie de montage (22) destinée à la lame à disque rotatif et une partie entraînée (21). La partie de montage (22) est décalée angulairement par rapport à l'axe de la partie entraînée, ce qui permet à la lame à disque rotatif à la fois d'osciller et d'être en nutation.

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