| 摘要 |
<p>PROBLEM TO BE SOLVED: To lay pipes easily and definitely through a tunnel with deformation, bending and curving freely along the passage for cable laying pipes by placing cable laying pipes on a plurality of carts and sequentially sending them out. SOLUTION: Passage of a tunnel comprises a first straight portion 7, a curved portion 8 changing from the last end portion of the first straight portion 7 to other direction at right angle, and a second straight line portion 9 connected to the last end portion of the curved portion 8. In this case, the curved portion 8 has a pulley attached to an angle member for smoothly moving and guiding a wire rope 47 along the passage. Moreover, winding position of the wire rope 47 of the pulley is installed below the winding position for the wire rope 47 fixed to cart. The wire rope 47 at the passing position is dislocated with the cart unit 42 passes through each block, and a cart unit 42 for pulling and guiding moves through the second straight portion 9. By doing this, the laying pipe is curved along the curved passage at the second straight line portion 9, thereby suppressing high cost and improving working efficiency.</p> |
