Device for drilling into pipe conduits

摘要

The drilling device consists of a tool with a drilling head (21) on the inner end of a drilling rod (22) which can be turned from its outer end, and a casing for fitting to the pipeline, with supports (12) on both sides. There is a releasable coupling (70) between the drilling head and drilling rod. The coupling is inside the casing, but can be coupled and decoupled from the outside. There is a holder (30) in the drilling support (12), to position the free drilling head in the supports and to determine the coupling/decoupling location between the drilling head and the drilling rod.