| 摘要 |
PROBLEM TO BE SOLVED: To form an effective jacking hole in ground, even if an obstacle such as a concrete retaining wall exists on a jacking path. SOLUTION: This jacking equipment is equipped with a supporting frame 10 which is installed on a ground surface in a fixed state, a sliding support 20 whose lower end is supported on the supporting frame 10 and which is provided in the state of being elongated upward, a jacking drive unit 30 which is mounted in such a manner as to be vertically slidable along the sliding support 20, and a screw auger-type jacking body 40 which is mounted on the drive unit 30 so as to form a vertical hole by the downward sliding of the drive unit 30; and a mounting part 40A, which enables the attachment/detachment of a hole saw for forming a through-hole in the obstacle making the formation of the vertical hole difficult, is formed at the leading end of the jacking body 40. COPYRIGHT: (C)2005,JPO&NCIPI
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