Percussive apparatus such as a rock breaker

Details Percussive apparatus such as a rock breaker Percussive apparatus such as a rock breaker

B - Operations, Transporting

25

D

B25D 17/08 (2006.01) B25D 17/00 (2006.01)

Patent

CA 2408130

The invention concerns an apparatus comprising a body (2) wherein a piston (6) is mounted sliding alternately driven by an incompressible fluid under pressure, said body containing part of a tool (4) which is guided in translation in a wear sleeve (3), the end of the tool located inside the body being subjected to the repeated impacts of the piston (6), while the other end projects beyond the body and is designed to be supported on the rock or analogue to be destroyed, the tool being retained in the body by at least a transverse key (13). One of the keys (13) retaining the tool passes through aligned holes provided in the body (2), into the wear sleeve (3), and overlaps inside the inner cylindrical space of the sleeve, the tool (4) having a transverse groove (12) for the key (13) to pass through.

Appareil comprenant un corps (2) dans lequel est monté coulissant un piston (6) entraîné alternativement par un fluide incompressible sous pression, ce corps contenant une partie d'un outil (4) qui est guidé en translation dans une douille d'usure (3), l'extrémité de l'outil située à l'intérieur du corps étant soumise aux chocs répétés du piston (6), tandis que l'autre extrémité dépasse du corps et est destinée à prendre appui sur la roche ou similaire à détruire, l'outil étant retenu dans le corps par au moins une clavette transversale (13). L'une des clavettes (13) de retenue de l'outil traverse des trous alignés ménagés dans le corps (2), dans la douille d'usure (3), et déborde à l'intérieur de l'espace cylindrique interne de la douille, l'outil (4) présentant une rainure transversale (12) pour le passage de la clavette (13).

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