| 摘要 |
PURPOSE:To enable a correct and efficient decomposing and assembling work of inner walls to be performed by a method wherein an inclination angle of an inner wall working machine installed in a pit is measured by an inclination meter and a screw jack and a hydraulic cylinder are applied for holding and fixing a working means. CONSTITUTION:When a supporting body 1 is installed at a bottom part 101 of a pit 100, supporting columns 20 and a turn table 23 are also inclined if the bottom part 101 is inclined. This inclination angle is measured by an inclination meter 8, a signal is sent to a motor 31 in response to the measured value, a screw shaft 30 of a screw jack 3 is moved up or down by a desired amount and the turn table 23 is adjusted through a supporting arm 6 in such a way as it becomes horizontal (the supporting column 20 may face in a vertical direction). In this case, the hydraulic cylinder 7 is expanded or retracted in response to an upward or downward movement of an adjusting arm 60. cutting of an inner wall 10 is performed by a cutting blade 23 and the movement of this cutting blade 22 is carried out through an advancement or retraction of the arm 21 against the side part, upward or downward movement of the arm 21 along the supporting column 20 and its rotation through gears 41 and 42 under driving of motor 4.
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