Shock absorbing assembly

Details Shock absorbing assembly Shock absorbing assembly

E - Fixed Constructions

21

B

E21B 4/06 (2006.01) E21B 17/07 (2006.01) F16D 3/74 (2006.01) F16D 3/76 (2006.01)

Patent

CA 2142891

A shock absorbing assembly (11) for a drilling ma- chine (13) utilizing a down drill hole hammer (16) having a driver member (23) for receiving input forces, a driven mem- ber (41) for transmitting forces from the driver member (23) to an attached drill string (15), and a resilient member (53) which is placed under tension and elongated when downward forces are applied. The resilient member (53) under tension receives and dissipates shocks and vibrations.

L'invention concerne un agencement (11) pour absorber les chocs d'une foreuse (13) utilisant un perforateur (16) situé au fond du trou de forage et ayant un élément d'entraînement (27) pour recevoir les forces d'entrée, un élément entraîné (41) pour transmettre les forces de l'élément d'entraînement à une colonne de forage (15) et un élément élastique (53) qui est mis sous tension et allongé lorsqu'on applique une force descendante. L'élément élastique (53) sous tension reçoit et dissipe les chocs et les vibrations.

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