Small caliber inside of pipe earth removal pipe hanger and small caliber tube embedding device

摘要

PROBLEM TO BE SOLVED: To provide a support device for a soil-discharge pipe, which can be recovered even in a curved execution case and which is not required to exchange the constituting members even if the diameter of a Hume pipe laid varies. ;SOLUTION: Arms 24 are rotatably fixed through pins 26 to projections 27 provided at a plurality of positions in the pipeaxial direction of the peripheral side face of a soil-discharge pipe 11. And guide rollers 23 traveling while contacting the inside face of a Hume pipe 5 are provided at the nearby position of the front end. One end of a coil spring 25 is fixed to a position near the root of the arm 24 and the other end thereof is fixed to a projection 28 separately provided at a shifted position from the projection 27, in the axial direction of the pipe. This coil spring 25 urges the arm 24 to radially rotate from the axial center of the soil-discharge pipe 11. Accordingly, when a larger external force than a specified one acts on the guide roller 23, the arm 24 rotates against the spring 25 force and hence, the radial dimensions of the arm and the guide roller can be expanded or contracted.;COPYRIGHT: (C)1997,JPO