| 摘要 |
The present invention relates to a detachable drill bit for vertical excavation and, more specifically, relates to a detachable drill bit for vertical excavation capable of easily exchanging a bit head in the abrasion of the bit head and using the bit head for various purposes by assembling a bit body to transfer power for excavation, and the bit head for actual excavation with a detachable structure. In other words, the present invention provides the detachable drill bit for vertical excavation capable of exchanging the bit head to a new bit head when the bit head is damaged and assembling the new head; and assembling the bit head of various specifications to the bit body in common regardless of a particular specification (diameter) by detachably assembling the bit body and the bit head using a combination tool, and assembling the bit body and the bit head with a structure in which a hitting power of the bit body is properly transferred to the bit head in contrast with an existing structure wherein the bit body and the bit head are integrally formed. |
