| 摘要 |
PURPOSE: A hole-verticality correcting device is provided to reduce construction period and construction cost by conveniently correcting a hole which is crooked on the ground. CONSTITUTION: A hole-verticality correcting device comprises a disk-shaped hanger(30), a hydraulic cylinder(40), a wall supporting plate(50) and an upper plate(46). The hole-verticality correcting device more comprises a hydraulic motor(80), a power hammer(100) and a hammer guide(104). The disk-shaped hanger is inserted into the center of the hole formed on the ground. The upper plate is fixed on a cylinder fixed block(44) positioned at the rear side of the hydraulic cylinder. The hydraulic motor is vertically installed on the upper plate. The power hammer has a hammer bit(102) for striking the inside wall of the hole. The hammer guide is fixed on the inner bottom of a lower rotary tank(90). The power hammer moves forward and backward according to hammer transfer cylinders(110,112). |
