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