| 摘要 |
The present invention relates to a release assembly and a method for forming a drilling tool for drilling a rock and a topsoil layer. The release assembly (18) is arranged in the axial direction between two drilling tool components (14s, 14b). The release assembly includes a release device enabling an initial axial direction length (L1) to be shortened when a joint (15) of the drilling tool components (14) having connection screws (20, 21) is rotated in the opening direction (Ro). After then, the release assembly has the reduced second axial direction length (L2), and a friction force in the joint is reduced. |
