SURVEYING CYLINDER BODY FOR CURVE

摘要

PROBLEM TO BE SOLVED: To provide a surveying cylinder body for a curve capable of pipe-jacking and carrying out a curve pipe-jacking with a high accuracy at a low cost by using a standard excavator for a straight line in curve pipe-jacking construction works for a small-bore pipe.

SOLUTION: In the surveying cylinder body, the surveying cylinder body is used for enabling a curve pipe-jacking construction by using the standard excavator for the straight line for the small-bore pipe and the first cylinder body composed of a non-magnetic substance at the rear of the standard excavator and the second cylinder body having a shell having approximately the same diameter as the outside diameter of the excavator and being composed of a steel material at the rear of the first cylinder body are connected. In such a survey cylinder body for the curve, front-rear connecting sections for each cylinder body are fitted bendably, an electromagnetic induction oscillator and a gyro-sensor unit are loaded in the first cylinder body and the gyro-sensor unit or the like for operating the gyro-sensor unit is loaded in the second cylinder body.

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