| 摘要 |
A boring apparatus is provided to punch holes within a narrow gap between structures with minimizing damage to the structures. A boring apparatus comprises a body(100) in which a support plate(110), a rack gear(130), and a guide rail(140) are formed and a height adjustment member(120) is screwed; a lifting member(200) slid up and down via a rail block(240) connected to the guide rail and equipped with a pinion gear inside; a lift driving unit(300) rotating the pinion gear; and a bore drill(500) boring holes while rotating by the power of a motor driving unit(400). |
