| 摘要 |
The present invention relates to a cluster drill capable of automated ascending and descending, and, more specifically, to a cluster drill that smoothly performs a descending motion for digging and an ascending motion after digging along a rod pressed into a drilling hole on the ground in advance. In other words, the purpose of the present invention is to provide a cluster drill capable of doing ascending and descending motions smoothly and stably along a rod without using lifting capacity of a crane by pressing and fixing the rod in a drilling hole in advance, and then mounting an ascending/descending unit capable of ascending and descending along the rod at the cluster drill. |
