Small diameter pipe curve propulsion system and the small diameter pipe curve jacking method

摘要

PROBLEM TO BE SOLVED: To prevent damage of intra-pipe equipment and a camera by a drawing steel rod when an excavator is moved back.;SOLUTION: Imaging units 4 including a camera unit 2 where cameras 2a, 2b (optical type camera survey sensors) and a target 2c are installed and a rail body 3 for making the camera unit 2 travel are connected, the position and direction of an excavator K are measured by imaging the target 2c by the cameras 2a, 2b, and curve propulsion of a small-diameter pipe 5 is performed on the basis of the measurement result. A small-diameter pipe curve propulsive device includes a drawing steel rod 7 provided with a male screw 6 on an outer peripheral surface and a coupler 9 provided with a female screw 8 to be loosely fitted with the male screw 6 on an inner peripheral surface and connecting the drawing steel rod 7 in a loosely fitted state. By loosely fitting the drawing steel rod 7 by the coupler 9, the drawing steel rod 7 is arranged in a curve shape from a departure shaft H to the excavator K, and a position conversion attachment 10 for converting the position of the drawing steel rod 7 from an upper part to a lower part is interposed between the excavator K and the imaging unit 4.;COPYRIGHT: (C)2012,JPO&INPIT