| 摘要 |
<p>PROBLEM TO BE SOLVED: To secure the safety of a nearby working personnel even when a sheath pipe disengages from a sheath-fixing part by covering an entire force feeding head with a net-shaped safety cover, and at the same time by doubly fixing the sheath pipe being mounted to the sheath pipe-fixing part of a force feeding head by sheath pipe grasp fitting being supported by the force feeding head. SOLUTION: Sheath pipe grasp fitting 16 is fixed to a sheath pipe 2 for fixing the tip of a stay 18. The sheath pipe grasp fitting 16 can be divided into upper and lower grasp fittings 16a and 16b, and the flange of both the grasp fittings 16a and 16b is clamped by a bolt 17 for fixing, thus mounting the sheath pipe grasp fitting 16 to the sheath pipe 2. The tip of the stay 18 is clamped to the flange of the sheath grasp fitting 16 by the bolt 17. As a result, the sheath pipe 2 is fixed to the sheath pipe fixing part at one side, and is fixed to the sheath pipe grasp fitting 16 and a force-feeding head 3 via the stay 18 at the other side for double fixing.</p> |
