| 摘要 |
<p>PURPOSE:To enable the water stop of a coupling section with remote control by constituting a lead pipe in the event a mounting pipe is connected to an existing sewer pipe, etc., of an inside pipe connected to a joint provided with a radial rib and an outside pipe provided with a connection screw. CONSTITUTION:When a mounting pipe is connected to an existing sewer pipe or a man-hole, etc., a lead pipe 3 driving forward from a starting shaft has a double construction constituted of an outside pipe 12 provided with a male screw on one end and a female screw on the other end thereof and an inside pipe 17. The inside pipe 17 is connected to a joint 14 provided with a radial rib 13 on the outside thereof. The lead pipe 3 is driven forward to the existing sewer pipe, and after it is arrived, two kinds of medicated liquid having quick drying efficiency caused by mixing are discharged from the inside and outside pipes to stop the water around a coupling section. After that, a boring is made by a drill, and the mounting pipe is connected thereto. According to the constitution, the coupling work can be carried out by remote control.</p> |
