| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an existing pile pull-out device capable of pulling out even a bent existing pile.SOLUTION: An existing pile pull-out device 1 includes a casing 11, a chuck claw 13 capable of moving between a projection position and a retraction position, a rod 15 having its lower end connected to a base end of the chuck claw 13, and a hydraulic jack 16 connected to an upper end of the rod 15 and putting the rod 15 in up and down strokes for the casing 11 so as to move the chuck claw 13 between the retraction position and projection position. The casing 11 is provided with joint parts 31, 32, 33, 34, and 35 enabling the casing 11 to be bent, and the rod 15 has bendable parts 41, 42, 43, 44, and 45 which are present by the joint parts 31, 32, 33, 34, and 35 and bend along the casing 11 to be put in strokes along the casing 11.</p> |
