| 摘要 |
A subsidence preventing manhole of a road is provided to fix an inlet pipe and a drain pipe firmly against vibration of a ground by connecting first and second bellows tubes between the inlet pipe and the drain pipe, and to restrict settlement of a water collecting box by connecting a subsidence restricting member. A manhole includes a water collecting box(110) having an inlet(112) and a drain hole(114) formed at both outer peripheries and a coupler(116) with an assembling hole(118), an inlet part(120) having a first connecting pipe(121) including a first inlet groove(122) connected to the inlet and a first assembling hole(123), a first bellows tube(124) combined with the first inlet groove by bolting and provided with a first semicircular protruded part(126) and an inlet pipe(127) having a first connecting groove(128) connected to the first semicircular protruded part and flowing water and sewage, an outlet part(130) having a second connecting pipe(131) including a second inlet groove(132) connected to the drain hole and a second assembling hole(133), a second bellows tube(134) combined with the second inlet groove by bolting and provided with a second semicircular protruded part(136) and a drain pipe(137) connected to the second semicircular protruded part and provided with a second connecting groove(138), and a subsidence restricting member(140) combined with the coupler by bolting to prevent subsidence of the water collecting box. The subsidence restricting member has an opening hole(143), an annular band(147) and a support plate(141) integrally formed with a connecting hole(149). |
