Rock drilling machine and axial bearing module

Details Rock drilling machine and axial bearing module Rock drilling machine and axial bearing module

B - Operations, Transporting

25

D

B25D 17/06 (2006.01) B21B 1/38 (2006.01) B25D 9/14 (2006.01) B25D 17/24 (2006.01) E21B 6/00 (2006.01)

Patent

CA 2744147

The invention relates to a rock drilling machine (5) equipped with an axial bearing (18) having at least one axial piston (39a, 39b) for setting the axial position of a drill shank (7) and for damping stress pulses returning from the rock. The axial bearing comprises a module (21 a, 21 b) that is detachable in one piece from one installation direction. The axial bearing module comprises all necessary seals (42a, 42b), bearing surfaces (40a, 40b), and a module frame (38a, 38b). Supporting forces (FA, FB) caused by the operation of the axial bearing are transmitted by means of support members (43) in the module frame directly to the body (11 ) of the rock drilling machine, which is a uniform piece at least at the axial bearing (18).

La présente invention concerne une machine de forage de roche (5) équipée d'un palier axial (18) possédant au moins un piston axial (39a, 39b) pour régler la position axiale d'une tige de forage (7) et pour amortir les contraintes impulsionnelles renvoyées par la roche. Selon l'invention, le palier axial comporte un module (21a, 21b) pouvant être détaché en une seule pièce depuis un sens d'installation. Le module de palier axial comporte tous les joints d'étanchéité nécessaires (42a, 42b), des surfaces de palier (40a, 40b), et un châssis de module (38a, 38b). Les forces d'assistance (FA, FB) résultant du fonctionnement du palier axial sont transmises au moyen d'organes de support (43) dans le châssis de module directement au corps (11) de la machine de forage de roche, qui est une pièce uniforme au moins au niveau du palier axial (18).

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