Locking mechanism for a ground drill

Details Locking mechanism for a ground drill Locking mechanism for a ground drill

E - Fixed Constructions

21

B

E21B 17/046 (2006.01)

Patent

CA 2655113

A locking mechanism (20) for locking an insertable device (30) relative to an outer tube (10) of a ground drill comprises at least one latch (6), which is arranged to releasably retain the insertable device (30) in a substantially fixed axial position relative to the outer tube (10). The locking mechanism (20) comprises a cam (12) and a cam follower (5), which are arranged to control a radial position of the latch (6). The locking system may be used in a ground drill system.

L'invention porte sur un mécanisme de verrouillage (20) servant à immobiliser un dispositif insérable (30) par rapport au tube externe d'un appareil de forage. Celui-ci comprend au moins un taquet de verrouillage (6) disposé de façon à retenir le dispositif insérable amovible (30) dans une position axiale substantiellement fixe par rapport au tube externe. Le mécanisme de verrouillage (20) est muni d'une came (12) et un galet de came (5), lesquels sont agencés de façon à contrôler la position radiale du taquet de verrouillage (6).Ce système de verrouillage peut être utilisé dans un appareil de forage.

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