| 摘要 |
PROBLEM TO BE SOLVED: To ensure a correct piling without being affected by worker's skill even though an arm 5 is bent while working. SOLUTION: An arm flexure correcting means 32 calculates true linear line length Lt from hinge part 6 to the top of the arm 5 and a true inclination angleθt made by true linear line length Lt and the horizontal surface, by using difference between the inclination anglesθ2' andθ3' detected by an arm clinometers 29, 31, and bending length L of the arm 5. The objective arm length Ln from the hinge part 6 to the top of the arm 5 is calculated from the true inclination angleθt, and the rod distance L2 which is the distance from the hinge part 6 to the center line 15 of the pile when the center line 15 of the pile is coincide with the vertical line of the piling point P. COPYRIGHT: (C)2004,JPO
|
