Drilling Device for Tree Trunk Injection

摘要

The present invention relates to a drill for use with a male thread drill, comprising: a drill body having a drill for forming a hole in a tree; A contact portion formed in a hollow shape so as to allow the drill to be operated therein and having an inclined surface contacting the tree for close contact with the tree; And a plurality of guide pins having one end fixed to the drill main body and the other end passing through the contact portion and moving along the length direction.