| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a product properly used as a leading device for cable tracting rope insertion which can be made to move smoothly in a spiral cable support device and can be applied to various spiral cable support devices having different diameters. SOLUTION: A screw rod 4b is made to protrude from a forcibly expansible member 4 provided at the tip of a main rod 1. The screw rod 4b is screwed into a screw hole 9b formed in a tapered leading member 9 via the main part 5a of a supporter 5 comprising the main part 5a and a support part 5b to connect the leading member 9 with the forcibly expansible member 4 via the supporter 5. Base parts of a proper number of elastic rods 7, etc., which are brought into contact with the circumference of the forcibly expansible member 4 with spacings between each other, are attached to the support part 5b of the supporter 5 so as to be able to rotate in the axial direction of the main rod 1. A convergence ring 10, with which the tips of the elastic rods 7 are loosely engaged independently from each other, is coupled coaxially and rotatably with the rear end side of the main rod with which a pushing-out tool is connected.</p> |
