| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To positively and easily fix an inner accessory pipe device in a manhole, and to facilitate piping work. <P>SOLUTION: An accessory pipe joint body 1 is arranged on an inflow side connection port part 3 along an inner wall face of the manhole 2 via a bent part 5 bent 90°, and it is provided with an outflow side connection port part 4 opened downward and connected to the inner accessory pipe. A first cleaning port 7 is formed on an axis of the inflow side connection port part 3 and it is horizontally opened into the manhole 2, and a second cleaning port 8 is formed on an axis of the outflow side connection port part 4 and it is opened upward into the manhole 2. A mounting seat curved in accordance with a curvature of an inner wall face of the manhole 2 is integrally formed on an outer circumference of the inflow side connection port part 3. A universal joint 23 protruding from an outer wall face of the manhole 2 is connected to the inflow side connection port part 3, and a plug 13 blocking the first and second cleaning ports 7 and 8 is detachably fitted on the accessory pipe joint body 1. <P>COPYRIGHT: (C)2004,JPO</p> |
