Sleeve arrangement

E - Fixed Constructions – 21 – B

Patent

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Details

E21B 7/02 (2006.01) B25D 17/11 (2006.01) E21B 41/00 (2006.01)

Patent

CA 2576897

Sleeve arrangement for a drill rig, especially adapted for damping sound and sealing to the ground, said drill rig comprising a feed beam (4) having a drill end (41) and a rear end (42), said feed beam (4) comprising a first and a second part (411, 412) near the drill end (41), the first part (411) being fixed in relation to the feed beam (4,) and the second part (412) being movable in relation to the feed beam (4) in a longitudinal direction. The invention is characterized in that said sleeve arrangement comprises a first flexible element (100) attached to the first part (411), and a second flexible element (200) attached to the movable second part (412), such that said first and second flexible elements (100, 200) are movable in relation to each other, wherein said second flexible element (200) is capable of taking an upper and a lower position, as well as all positions there between.

La présente invention concerne un ensemble manchon pour un appareil de forage, spécifiquement conçu pour amortir le bruit et pour être scellé au sol. L'appareil de forage susmentionné comprend une poutre de guidage (4) présentant une extrémité de forage (41) et une extrémité arrière (42). Cette poutre de guidage (4) comprend une première partie (411, 412) à proximité de l'extrémité de forage (41), laquelle première partie (411) est fixée par rapport à la poutre de guidage (4,) et la seconde partie (412) est mobile par rapport à la poutre de guidage (4) dans le sens de la longueur. Cette invention se caractérise par un ensemble manchon qui comprend un premier élément souple (100) relié à la première partie (411), et un second élément souple (200) relié à la seconde partie mobile (412), de telle sorte que le premier élément souple et le second élément souple (100, 200) soient mobiles l'un par rapport à l'autre. Le second élément mobile (200) est conçu pour adopter une position supérieure et une position inférieure, ainsi que toute position entre les deux.

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