| 摘要 |
Coupling device (1) for a rock drill (6) between a drilling tube (3) and a removable core barrel (5), which rock drill (6) comprises an outer sleeve device (7) which is non-rotating about the core barrel (5) during drilling and which is arranged such that it can be connected to the drilling tube (3), which drilling tube, together with the core barrel (5), is arranged so as to be able to be raised out of a bored bore hole (9), whilst the outer sleeve device (7) remains in the bore hole (9). The coupling device (1) comprises a coupling sleeve (13) which can be coupled to a radial locking unit (11) and which during drilling, in a position coupled to the core barrel (5), can transmit a torque from the drilling tube (3) to the core barrel (5) and, in an uncoupled position, allows the outer sleeve device (7) to remain together with the drilling tube (3) in the bore hole (9) when the core barrel (5), comprising the radial locking unit (11), is raised to the ground surface (m). |
