JP3793307B2 - Sewage inspection port protective lid device - Google Patents

Sewage inspection port protective lid device Download PDF

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Publication number
JP3793307B2
JP3793307B2 JP01157197A JP1157197A JP3793307B2 JP 3793307 B2 JP3793307 B2 JP 3793307B2 JP 01157197 A JP01157197 A JP 01157197A JP 1157197 A JP1157197 A JP 1157197A JP 3793307 B2 JP3793307 B2 JP 3793307B2
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Japan
Prior art keywords
lid
pipe
peripheral surface
fitting hole
sewage
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JP01157197A
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Japanese (ja)
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JPH10204905A (en
Inventor
暁夫 馬場
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Maezawa Kasei Kogyo KK
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Maezawa Kasei Kogyo KK
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Priority to JP01157197A priority Critical patent/JP3793307B2/en
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Description

【0001】
【発明の属する技術分野】
本発明は下水管路に接続した桝などの立ち上り管接続口に接続された合成樹脂製の立ち上り管の上部位置に設置する下水用点検口防護蓋装置に関する。
【0002】
【従来の技術】
従来、下水管路の点検口は、コンクリート製の大形のマンホール管にて構成されており、広い道路等においては水道管、ガス管、電線などの他の埋設施設が埋設されていても、大形マンホール管を設置することに問題は少ない。
【0003】
しかし、下水管路の普及率が伸びてくると、より狭い道路にも下水管路が埋設されるようになり、この狭い道路にも水道管、ガス管、電線などの他の地下の埋設施設が複雑に入り組んで埋設されている場合が多く、大形マンホールを設置することが困難な場合がある。
【0004】
また、従来のマンホールではコンクリート製の大形マンホール管と下水管路との接合部等から不明水が侵入する問題がクローズアップされてきた。
【0005】
そのような状況から最近は狭い道路にも埋設できるように、塩化ビニル樹脂にて成形した桝を下水管路に接続し、この桝の接続口に接続した塩化ビニル樹脂にて成形した立ち上り管の上端開口部から下水管路の点検、掃除ができるようにした点検口装置が用いられている。
【0006】
この塩化ビニル樹脂にて成形した桝および立ち上り管にて形成した下水用点検口装置は、コンクリート製のマンホール管などの構造物に比べて強度が低く、この下水用点検口を形成した桝および立ち上り管に道路を通過する車輌などの荷重が掛かると桝および立ち上り管が破損することがある。
【0007】
そこで、従来は、道路を通過する車輌などの荷重が桝および立ち上り管に直接掛からないように、立ち上り管の上部外周に立ち上り管の外径より大きい内径の嵌合孔を有する台座を遊嵌し、前記台座上に点検用蓋体を開閉自在に設けた蓋受け枠体を支持し、この台座に掛かる荷重が立ち上り管に直接掛からないようにした構造が採られている。
【0008】
【発明が解決しようとする課題】
上記従来の下水用点検口を形成する塩化ビニル樹脂管の立ち上り管の上部外周に支持台座を遊嵌した構造では、立ち上り管の中心が支持台座の嵌合孔の中心より芯ずれしていると、下水管路の点検、掃除に際して、地表面に設置してある点検用蓋体を開くときに、この点検用蓋体が立ち上り管の上部に設けた閉塞蓋体に衝合したり、さらに、立ち上り管の上端開口部に設けた閉塞蓋体を開く際に、閉塞蓋体が点検用蓋体の蓋受け枠体に衝合することがあり、点検用蓋体や閉塞蓋体が開けにくくなる問題がある。
【0009】
本発明は、上記問題点に鑑みなされたもので、下水管路の接続口に接続した合成樹脂管の立ち上り管の中心を点検用蓋体を設けた蓋受け枠体を支持する台座の嵌合孔の中心に略一致させて容易に設置でき、点検用蓋体の開閉および閉塞蓋体の開閉が円滑にできる下水用点検口防護蓋装置を提供するものである。
【0010】
【課題を解決するための手段】
請求項1記載の発明の下水用点検口防護蓋装置は、下水管路に下端を連通接続されるとともに上端開口部に閉塞蓋体を開閉自在に設けかつ合成樹脂にて成形した立ち上り管の上部位置に設置される下水用点検口防護蓋装置であって、前記立ち上り管の上部外周面に遊嵌される嵌合孔を開口した支持台座と、この支持台座上に支持され点検用蓋体を開閉自在に取付ける蓋受け枠体とを備え、前記支持台座の嵌合孔の内周面に先端が前記立ち上り管の上部外周面と間隔をもって対向される複数個の突起部を突設したものである。
【0011】
そして、下水管路に接続した合成樹脂製からなる立ち上り管の上部に支持台座の嵌合孔を嵌合し、この立ち上り管の外周面と支持台座の嵌合孔の内周面に突設した突起部の先端との間に間隔をもって対向させることにより、立ち上り管の中心と支持台座の嵌合孔の中心とが略一致される。この状態で点検用蓋体および蓋受け枠体の自重を含めた道路面からの荷重は支持台座にて受け、合成樹脂にて成形した立ち上り管に点検用蓋体、蓋受け枠体の荷重および道路を通過する車輌などの荷重が掛ることがなく、合成樹脂にて成形した立ち上り管が破損することがない。
【0012】
また、支持台座の嵌合孔に突設した突起部と間隔をもって対向した立ち上り管の中心は支持台座の嵌合孔の中心と略一致しているので、点検用蓋体が閉塞蓋体、立ち上り管と衝合したり、閉塞蓋体が蓋受け枠体に衝合することがなく円滑に開閉することができる。
【0013】
また、点検、掃除に際しては、点検用蓋体を開き、さらに立ち上り管の閉塞蓋体を開いて地表面より立ち上り管を通して下水管路の点検、掃除ができる。
【0014】
請求項2記載の発明の下水用点検口防護蓋装置は、請求項1記載の発明の下水用点検口防護蓋装置において、支持台座の嵌合孔の内周面に突設した各突起部の上面側にこの突起部を切離し可能とする切り溝部を形成したものである。
【0015】
そして、支持台座の嵌合孔に突設した突起部の先端と立ち上り管とが接触したり、間隔が小さい場合には、この突起部を切り溝部からカッターナイフなどで切離して、立ち上り管と支持台座との間隔を拡げて立ち上り管に支持台座および蓋受け枠体が接触しないようにする。
【0016】
【発明の実施の形態】
本発明の一実施の形態を図面に基づいて説明する。
【0017】
図1において、地中に埋設される合成樹脂、例えば、塩化ビニル樹脂管にて構成された下水管路の下水管1に接続する合成樹脂、例えば、塩化ビニル樹脂にて成形した桝2の上面に開口した接続口3に合成樹脂、例えば、塩化ビニル樹脂管にて成形された立ち上り管4の下部にパッキング5を介して液密に嵌合接続する。この立ち上り管4の上端開口部6は道路面などの地表面7より下方位置に開口される。
【0018】
そして、図1および図2に示すオレフィン系合成樹脂の複合材、または、コンクリートにて成形した支持台座10は前記立ち上り管4の外径より大きな外径の嵌合孔11が形成されている。この嵌合孔11は支持台座10の下端に向かって縮径状に形成され、この嵌合孔11に前記立ち上り管4の上部の外周面が間隔12をもって遊嵌される。
【0019】
また、前記支持台座10に形成した嵌合孔11の内周面の下部は、図1ないし図4に示す複数個、例えば、円周方向に離間して4箇所に突起部13が中心に向かって突設されている。さらに、この突起部10は基部の上面側に切離すことが容易な切り溝部14が形成されている。
【0020】
そして、図1に示す、前記支持台座10の嵌合孔11にこの支持台座10の上面と略同一面に遊嵌される前記立ち上り管4の上端開口部6を閉塞する閉塞蓋体15には、外周面に環状溝16が形成され、この環状溝16に環状のパッキング17を装着するとともに上面部に取手18を設け、この閉塞蓋体15は前記立ち上り管4の上端開口部6に着脱自在に嵌着され、この閉塞蓋体15はパッキング17により立ち上り管4の上端開口部6を液密に閉塞する。
【0021】
さらに、図1および図2に示す前記支持台座10の上面側には前記嵌合孔11の周縁に沿って円環状の取付座20が凹窪状に形成され、この取付座20には鋳物にて成形された円筒状の蓋受け枠体21の下部に外向きに延在する鍔状のフランジ22を載置固定する。
【0022】
そして、前記蓋受け枠体21は上部内周に鋳物などにて成形した点検用蓋体25を開閉自在に保持する受け縁26が環状に突設され、この受け縁26にチェン27によってこの点検用蓋体25が連結されている。
【0023】
また、図1、図2および図5に示す前記蓋受け枠体21のフランジ22と蓋受け枠体21の外周面にわたって三角形状の外方リブ28が円周方向に間隔をおいて一体に形成され、この外方リブ28によって蓋受け枠体21は補強される。
【0024】
なお、図5に示すように、上記円板状の点検用蓋体25の上面にこの点検用蓋体25を開閉するための吊上工具を引っ掛ける一対の挿入口29が開口されるとともに滑り止め用と表面意匠とを兼ねる凹凸部30を形成し、さらに、この点検用蓋体25の裏面部に図2に示すように、補強用の内方リブ31が下方に向って突設されている。
【0025】
なお、図1に示す前記桝2の外周面には流入用接続口33と流出用接続口34とが形成され、この流出用接続口34は挿口に形成され、この挿口の流出用接続口34に下水管1の一端に形成した拡径部35がパッキング36を介在して嵌合接続される。また、前記流入用接続口33は球面状に膨出形成され、この流入用接続口33に外周面を球面状に形成した接手部材37が回動自在に嵌着され、この接手部材37には下水管1の他端を挿入接続する挿込口40が形成されている。
【0026】
そして、この接手部材37の外周面には流入用接続口33の内周面に密接するパッキング41の嵌合溝42が形成され、この接手部材37の挿込口40の内周面には下水管1の他端部の外周面と密接するパッキング43の嵌合溝44を形成する。
【0027】
さらに、この桝2の上面に形成した接続口3には前記立ち上り管4の下端を受ける拡径段部45が形成され、この拡径段部45の上部に前記立ち上り管4の外周面と密着する前記パッキング5を装着する嵌合溝47が形成される。
【0028】
上記実施の形態の作用について説明する。
【0029】
下水用点検口防護蓋装置を施工する場合、下水管路の下水管1に接続した塩化ビニル樹脂の桝2の接続口3に立ち上り管4を下部を嵌挿して、この接続口3の拡径段部45に立ち上り管4の下端を当接して接続する。
【0030】
この状態で立ち上り管4の上部近くまで掘削土を埋戻し、この立ち上り管4の上部に支持台座10の嵌合孔11を遊嵌して、この支持台座10を地表面7より下方に設置する。
【0031】
そして、この支持台座10の嵌合孔11は下向きに縮径状に形成して開口するとともにその内径を立ち上り管4の外径より大きい内径に形成されており、この支持台座10の嵌合孔11に突設した各突起部13の先端と立ち上り管4との間に間隔12を保持して立ち上り管4の中心と支持台座10の嵌合孔11の中心との芯合せができる。
【0032】
次に、蓋受け枠体21を支持台座10の取付座20に載置して固定する。
【0033】
また、立ち上り管4の外周面と支持台座10の突起部13との間隔12が小さいとき、或いは、突起部13の先端が立ち上り管4の外周面に接触したときには、支持台座10の嵌合孔11に突設した突起部13を切離すことによって、支持台座10の嵌合孔11が立ち上り管4と接触することがない。なお、前記突起部13の切離しは突起部13の基部上面に形成した切り溝部14からカッターナイフなどの工具で簡単に切離すことができる。
【0034】
また、立ち上り管4の上端開口部6から水、土砂が侵入しないように、液密に閉塞するパッキング17を装着した閉塞蓋体15を立ち上り管4の上端開口部6に嵌着する。
【0035】
そして、この立ち上り管4の外周面と支持台座10の嵌合孔11の内周面との間に間隔12を有しているので、立ち上り管4が支持台座10にて押圧されて歪むことによる変形がないので、閉塞蓋体15の開閉が困難になることがない。
【0036】
さらに、合成樹脂、例えば、塩化ビニル樹脂にて成形された桝2の接続口3に接続される立ち上り管4の防護蓋装置の構成部品として点検用蓋体25、蓋受け枠体21、支持台座10に鋳物やコンクリートなどの重量材料を使用しても上方からの荷重は支持台座10にて受け、さらに、支持台座10に掛かる荷重は地中に応力分散するため、支持台座10に遊嵌される立ち上り管4は荷重の影響を受けることがないので、道路に設置しても車輌などの荷重が桝および立ち上り管4に掛かることがない。
【0037】
そして、下水管路の点検、掃除に際しては、下水用点検口防護蓋装置の点検用蓋体25を開口し、閉塞蓋体15を立ち上り管4の上端開口部6より取外し、地表面7より桝2および下水管1の点検、掃除ができる。
【0038】
また、下水用点検口防護蓋装置の施工に際しては、舗装下地面をランマーなどにて地固めを行う際に、立ち上り管4の外周面が嵌合孔11の内周面または突起部13に対しても間隔12をもって遊嵌されかつ接触していないので、前記立ち上り管4の上端開口部6にノッチ効果(応力の一点集中)による振動を受けることがなく、立ち上り管4を構成するパイプ部材が割れることがない。
【0039】
また、立ち上り管4は支持台座10の嵌合孔11に遊嵌されており、支持台座10、蓋受け枠体21、点検用蓋体25の自重を含めて、立ち上り管4には荷重は掛からないので、立ち上り管4の下端に嵌合接続される桝2に直接荷重が掛かることがない。
【0040】
なお、前記実施の形態では、支持台座10の嵌合孔11の内周面に突設した突起部13は基部の上面側に形成した切り溝部14にて容易に切断できるようにしたが、この突起部13は防護蓋装置の施工時の支持台座10の嵌合孔11と立ち上り管4との芯合せのときに使用するものであるから、突起部13は大きく形成する必要がなく、カッターナイフ等で簡単に切断できる程度の大きさに形成すれば、切り溝部14を形成する必要はない。
【0041】
さらに、前記継手、例えば、桝2の流入用接続口33は回動可能に接手部材37を設けて、流入側下水管1の向きを適宜の方向に向けることができるようにした構造としたが、この流入用接続口33は下水管1を挿入接続する受口とすることもできる。
【0042】
【発明の効果】
請求項1の発明によれば、下水管路の下水用点検口を形成する合成樹脂製からなる立ち上り管の上部外周面と支持台座に形成した突起部の先端との間に間隔を保持して遊嵌されるので、立ち上り管との中心合わせが容易できるとともに支持台座が立ち上り管に接触しないように、立ち上り管に支持台座を容易に遊嵌でき、点検用蓋体が立ち上り管の閉塞蓋体に衝合したり、閉塞蓋体が点検用蓋体に衝合することがなくなり、点検用蓋体および塞蓋体を円滑に開閉できる。
【0043】
また、防護蓋装置を構成する点検用蓋体および蓋受け枠体と重量のある鋳物などにて構成されてあっても、これらの自重を含めた上方からの荷重は支持台座によって受けるので、立ち上り管には荷重、振動は伝幡されないため、合成樹脂にて成形した立ち上り管が破損することがなく、その耐久性が向上する。
【0044】
請求項2の発明によれば、支持台座の嵌合孔に突設した突起部と立ち上り管の外周面との間隔がない場合、または、極端に小さい場合には、嵌合孔に突設した突起部を切離すことによって支持台座の嵌合孔に立ち上り管の外周面が接触することがなく、また、立ち上り管に点検用蓋体および蓋受け枠体などの荷重が掛かることがない。
【0045】
さらに、支持台座の突起部は切り溝部をカッターナイフなどに工具で容易に切離すことができる。
【図面の簡単な説明】
【図1】本発明の一実施の形態を示す下水用点検口防護蓋装置の施工状態を示す縦断面図である。
【図2】同上防護蓋装置の拡大断面図である。
【図3】同上防護蓋装置の支持台座の平面図である。
【図4】同上防護蓋装置の支持台座の嵌合孔の突起部を示す部分拡大図である。
【図5】同上防護蓋装置の平面図である。
【符号の説明】
1 下水管路の下水管
4 立ち上り管
6 上端開口部
10 支持台座
11 嵌合孔
12 間隔
13 突起部
14 切り溝部
15 閉塞蓋体
21 蓋受け枠体
25 点検用蓋体
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sewage inspection port protective lid device installed at an upper position of a rising pipe made of a synthetic resin connected to a rising pipe connection port such as a gutter connected to a sewage pipe line.
[0002]
[Prior art]
Conventionally, the inspection port of the sewage pipe line is composed of large concrete manhole pipes, and even if other buried facilities such as water pipes, gas pipes, electric wires are buried on wide roads, There are few problems in installing large manhole tubes.
[0003]
However, as the penetration rate of sewage pipes increases, sewage pipes will be buried on narrower roads, and other underground burial facilities such as water pipes, gas pipes, and electric wires will also be buried on these narrow roads. Are often intricately embedded and may be difficult to install large manholes.
[0004]
In addition, in conventional manholes, the problem of unknown water intrusion from the joint between a large concrete manhole pipe and a sewage pipe has been highlighted.
[0005]
Under such circumstances, so as to be able to be buried even in narrow roads recently, a ridge formed of vinyl chloride resin is connected to a sewer pipe, and a riser pipe formed of vinyl chloride resin connected to the connection port of this ridge is used. An inspection port device that allows inspection and cleaning of the sewage pipe line from the upper end opening is used.
[0006]
The sewage inspection port device formed with the dredge and rise pipe formed with this vinyl chloride resin has lower strength than the concrete manhole pipe and other structures, and the sewage and rise formation with this sewage check hole are formed. When a load of a vehicle passing through the road is applied to the pipe, the kite and the rise pipe may be damaged.
[0007]
Therefore, conventionally, a pedestal having a fitting hole having an inner diameter larger than the outer diameter of the rising pipe is loosely fitted on the upper outer periphery of the rising pipe so that a load of a vehicle passing through the road is not directly applied to the dredging and the rising pipe. A structure is employed in which a lid receiving frame having an inspection lid that can be freely opened and closed is supported on the pedestal so that a load applied to the pedestal is not directly applied to the riser pipe.
[0008]
[Problems to be solved by the invention]
In the structure in which the support pedestal is loosely fitted to the upper outer periphery of the rising pipe of the vinyl chloride resin pipe forming the conventional sewage inspection port, the center of the rising pipe is misaligned from the center of the fitting hole of the support pedestal. When inspecting and cleaning the sewage pipe, when opening the inspection lid installed on the ground surface, this inspection lid collides with the closure lid provided at the top of the riser pipe, When opening the closing lid provided at the upper end opening of the riser, the closing lid may collide with the lid receiving frame of the inspection lid, making it difficult to open the inspection lid or the closure lid. There's a problem.
[0009]
The present invention has been made in view of the above problems, and is a fitting of a pedestal that supports a lid receiving frame provided with a lid for inspection at the center of a rising pipe of a synthetic resin pipe connected to a connection port of a sewer pipe Provided is a sewage inspection port protective cover device that can be easily installed substantially in the center of a hole and that can smoothly open and close the inspection lid and open and close the closing lid.
[0010]
[Means for Solving the Problems]
The sewage inspection port protective lid device according to the first aspect of the present invention is such that the lower end is connected to the sewage pipe line and the upper end opening is provided with a closed lid body that can be freely opened and closed and is formed of a synthetic resin. A sewage inspection port protective lid device installed at a position, comprising: a support pedestal having a fitting hole that is loosely fitted to the upper outer peripheral surface of the riser; and an inspection lid supported on the support pedestal. A lid receiving frame that can be freely opened and closed, and a plurality of protrusions protruding from the inner peripheral surface of the fitting hole of the support pedestal so that the tip faces the upper outer peripheral surface of the rising pipe with a gap. is there.
[0011]
And the fitting hole of the support pedestal was fitted to the upper part of the rising pipe made of synthetic resin connected to the sewer pipe, and the outer peripheral surface of this rising pipe and the inner peripheral surface of the fitting hole of the supporting pedestal were projected. By facing the front end of the protruding portion with a gap, the center of the riser pipe and the center of the fitting hole of the support base are substantially matched. In this state, the load from the road surface including the weight of the inspection lid and the lid receiving frame is received by the support pedestal, and the load of the inspection lid and lid receiving frame on the riser molded from synthetic resin. There is no load on the vehicle passing through the road, and the riser pipe formed of synthetic resin is not damaged.
[0012]
In addition, since the center of the rising pipe facing the protrusion projecting from the fitting hole of the support pedestal with a gap substantially coincides with the center of the fitting hole of the support pedestal, the inspection lid is a closed lid, It can be opened and closed smoothly without colliding with the tube or without the closure lid colliding with the lid receiving frame.
[0013]
Further, when inspecting and cleaning, the inspection lid is opened, and further, the closing lid of the rising pipe is opened, and the sewage pipe can be inspected and cleaned through the rising pipe from the ground surface.
[0014]
The sewage inspection port protective lid device according to the second aspect of the present invention is the sewage inspection port protective lid device according to the first aspect of the invention, wherein each of the protrusions projecting from the inner peripheral surface of the fitting hole of the support base is provided. A kerf that allows the protrusion to be separated is formed on the upper surface side.
[0015]
If the tip of the protruding part protruding from the fitting hole of the support pedestal comes into contact with the rising pipe or the interval is small, the protruding part is separated from the groove with a cutter knife or the like to support the rising pipe and The distance from the pedestal is increased so that the support pedestal and the lid receiving frame do not contact the riser pipe.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to the drawings.
[0017]
In FIG. 1, the upper surface of a cage 2 formed of a synthetic resin embedded in the ground, for example, a synthetic resin connected to a sewage pipe 1 made of a vinyl chloride resin pipe, for example, a vinyl chloride resin. The connection port 3 opened to the bottom is fitted and connected in a liquid-tight manner through the packing 5 to the lower part of the riser pipe 4 formed of a synthetic resin, for example, a vinyl chloride resin pipe. The upper end opening 6 of the riser 4 is opened at a position below the ground surface 7 such as a road surface.
[0018]
A support base 10 formed of a composite material of olefin synthetic resin shown in FIGS. 1 and 2 or concrete is formed with a fitting hole 11 having an outer diameter larger than the outer diameter of the riser 4. The fitting hole 11 is formed in a reduced diameter toward the lower end of the support base 10, and the upper outer peripheral surface of the rising pipe 4 is loosely fitted into the fitting hole 11 with a gap 12.
[0019]
Further, the lower part of the inner peripheral surface of the fitting hole 11 formed in the support base 10 has a plurality of, for example, four circumferentially spaced projections 13 as shown in FIGS. Projecting. Further, the projecting portion 10 is formed with a kerf portion 14 that can be easily separated from the upper surface side of the base portion.
[0020]
As shown in FIG. 1, the closing lid 15 for closing the upper end opening 6 of the riser pipe 4 loosely fitted in the fitting hole 11 of the support pedestal 10 substantially flush with the upper surface of the support pedestal 10 is provided. An annular groove 16 is formed on the outer peripheral surface, and an annular packing 17 is attached to the annular groove 16 and a handle 18 is provided on the upper surface portion. The closing lid 15 is detachable from the upper end opening 6 of the riser 4. The closing lid 15 liquid-tightly closes the upper end opening 6 of the riser 4 by the packing 17.
[0021]
Further, an annular mounting seat 20 is formed in a concave shape along the peripheral edge of the fitting hole 11 on the upper surface side of the support base 10 shown in FIGS. 1 and 2. A flange-like flange 22 extending outward is placed and fixed to the lower part of the cylindrical lid receiving frame 21 formed in this manner.
[0022]
The lid receiving frame body 21 is provided with a receiving edge 26 projecting in a ring shape on the upper inner periphery thereof so as to open and close an inspection lid body 25 formed by casting or the like. The lid body 25 is connected.
[0023]
Further, triangular outer ribs 28 are integrally formed at intervals in the circumferential direction over the flange 22 of the lid receiving frame 21 and the outer peripheral surface of the lid receiving frame 21 shown in FIGS. The lid receiving frame 21 is reinforced by the outer ribs 28.
[0024]
As shown in FIG. 5, a pair of insertion ports 29 for hooking a lifting tool for opening and closing the inspection lid 25 are opened on the upper surface of the disk-shaped inspection lid 25 and an anti-slip As shown in FIG. 2, a reinforcing inner rib 31 protrudes downward on the back surface portion of the inspection lid 25 as shown in FIG. .
[0025]
An inflow connection port 33 and an outflow connection port 34 are formed on the outer peripheral surface of the basket 2 shown in FIG. 1, and the outflow connection port 34 is formed in an insertion port. An enlarged diameter portion 35 formed at one end of the sewer pipe 1 is fitted and connected to the mouth 34 with a packing 36 interposed therebetween. The inflow connection port 33 is formed in a spherical shape, and a joint member 37 having an outer peripheral surface formed in a spherical shape is rotatably fitted to the inflow connection port 33. An insertion port 40 for inserting and connecting the other end of the sewer pipe 1 is formed.
[0026]
A fitting groove 42 of the packing 41 that is in close contact with the inner peripheral surface of the inflow connection port 33 is formed on the outer peripheral surface of the joint member 37, and the lower surface is formed on the inner peripheral surface of the insertion port 40 of the joint member 37. A fitting groove 44 of the packing 43 is formed in close contact with the outer peripheral surface of the other end of the water pipe 1.
[0027]
Further, the connection port 3 formed on the upper surface of the flange 2 is formed with an enlarged diameter step portion 45 that receives the lower end of the riser pipe 4, and is in close contact with the outer peripheral surface of the riser tube 4 at the upper portion of the enlarged diameter step portion 45. A fitting groove 47 for mounting the packing 5 is formed.
[0028]
The operation of the above embodiment will be described.
[0029]
When constructing the protective cover device for the inspection port for sewage, the lower part of the riser pipe 4 is inserted into the connection port 3 of the basket 2 of the vinyl chloride resin connected to the sewage pipe 1 of the sewage pipe line, and the diameter of the connection port 3 is expanded. The lower end of the rising pipe 4 is brought into contact with and connected to the stepped portion 45.
[0030]
In this state, the excavated soil is backfilled to near the upper part of the rising pipe 4, and the fitting hole 11 of the supporting base 10 is loosely fitted to the upper part of the rising pipe 4, and the supporting base 10 is installed below the ground surface 7. .
[0031]
The fitting hole 11 of the support pedestal 10 is formed to open downward with a reduced diameter and has an inner diameter larger than the outer diameter of the riser tube 4. The center of the rising tube 4 and the center of the fitting hole 11 of the support pedestal 10 can be aligned while maintaining a distance 12 between the tip of each protruding portion 13 projecting from 11 and the rising tube 4.
[0032]
Next, the lid receiving frame 21 is placed on the mounting seat 20 of the support base 10 and fixed.
[0033]
Further, when the distance 12 between the outer peripheral surface of the rising pipe 4 and the protrusion 13 of the support pedestal 10 is small, or when the tip of the protrusion 13 contacts the outer peripheral surface of the rising pipe 4, the fitting hole of the support pedestal 10 is provided. By separating the projecting portion 13 projecting from 11, the fitting hole 11 of the support base 10 does not come into contact with the rising pipe 4. The protrusion 13 can be easily separated from the groove 14 formed on the upper surface of the base of the protrusion 13 with a tool such as a cutter knife.
[0034]
In addition, a closing lid 15 fitted with a packing 17 that is liquid-tightly closed is fitted into the upper end opening 6 of the riser 4 so that water and earth and sand do not enter from the upper end opening 6 of the riser 4.
[0035]
Since there is a distance 12 between the outer peripheral surface of the rising pipe 4 and the inner peripheral surface of the fitting hole 11 of the support pedestal 10, the rising pipe 4 is pressed by the support pedestal 10 and distorted. Since there is no deformation, it is not difficult to open and close the closing lid 15.
[0036]
Further, as a component of the protective lid device of the riser pipe 4 connected to the connection port 3 of the cage 2 formed of a synthetic resin, for example, vinyl chloride resin, the inspection lid body 25, the lid receiving frame body 21, the support base Even if heavy materials such as castings and concrete are used for Fig. 10, the load from above is received by the support pedestal 10, and furthermore, the load applied to the support pedestal 10 is stress-spread in the ground, so it is loosely fitted to the support pedestal 10. Since the riser pipe 4 is not affected by the load, the load of the vehicle or the like is not applied to the kite and the riser pipe 4 even when installed on the road.
[0037]
When the sewage pipe is inspected and cleaned, the inspection lid 25 of the sewage inspection port protective lid device is opened, the closure lid 15 is removed from the upper end opening 6 of the rising pipe 4, and the dredge is removed from the ground surface 7. 2 and sewage pipe 1 can be inspected and cleaned.
[0038]
Further, when constructing the protective cover device for the sewage inspection port, the outer peripheral surface of the riser pipe 4 is in contact with the inner peripheral surface of the fitting hole 11 or the protrusion 13 when the ground surface of the pavement is solidified with a rammer or the like. Since it is loosely fitted and not in contact with the gap 12, the upper end opening 6 of the riser pipe 4 is not subjected to vibration due to the notch effect (stress concentration at one point), and the pipe member constituting the riser pipe 4 is broken. There is nothing.
[0039]
The riser pipe 4 is loosely fitted in the fitting hole 11 of the support pedestal 10, and no load is applied to the riser pipe 4 including the weight of the support pedestal 10, the lid receiving frame body 21, and the inspection lid body 25. Therefore, no load is directly applied to the flange 2 fitted and connected to the lower end of the rising pipe 4.
[0040]
In the embodiment described above, the protrusion 13 projecting from the inner peripheral surface of the fitting hole 11 of the support base 10 can be easily cut by the kerf 14 formed on the upper surface side of the base. Since the protrusion 13 is used when the fitting hole 11 of the support base 10 and the rising pipe 4 are aligned when the protective lid device is installed, the protrusion 13 does not need to be formed large, and the cutter knife If it is formed to a size that can be easily cut by, for example, it is not necessary to form the kerf 14.
[0041]
Furthermore, the joint, for example, the inflow connection port 33 of the eaves 2 has a structure in which a joint member 37 is rotatably provided so that the inflow side sewer pipe 1 can be oriented in an appropriate direction. The inflow connection port 33 may be a receiving port into which the sewer pipe 1 is inserted and connected.
[0042]
【The invention's effect】
According to the first aspect of the present invention, a gap is maintained between the upper outer peripheral surface of the rising pipe made of synthetic resin that forms the sewage inspection port for the sewage pipe and the tip of the protrusion formed on the support base. Since it is loosely fitted, the support pedestal can be easily loosely fitted to the riser so that the centering with the riser is easy and the support pedestal does not touch the riser, and the inspection lid is a closed lid for the riser And the closure lid body does not collide with the inspection lid body, and the inspection lid body and the closure lid body can be opened and closed smoothly.
[0043]
In addition, even if it is composed of the inspection lid and lid receiving frame that make up the protective lid device and heavy castings, the load from above, including its own weight, is received by the support pedestal. Since no load or vibration is transmitted to the tube, the riser tube molded from synthetic resin is not damaged, and its durability is improved.
[0044]
According to the second aspect of the present invention, when there is no gap between the protruding portion protruding from the fitting hole of the support base and the outer peripheral surface of the riser pipe, or when it is extremely small, the protruding portion is protruded from the fitting hole. By separating the protrusion, the outer peripheral surface of the rising pipe does not come into contact with the fitting hole of the support pedestal, and loads such as an inspection lid and a lid receiving frame are not applied to the rising pipe.
[0045]
Furthermore, the protrusion of the support pedestal can be easily separated with a tool such as a cutter knife in the cut groove.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing a construction state of a sewage inspection port protective cover device according to an embodiment of the present invention.
FIG. 2 is an enlarged sectional view of the protective lid device.
FIG. 3 is a plan view of a support base of the protective lid device.
FIG. 4 is a partially enlarged view showing a protrusion of the fitting hole of the support base of the protective lid device.
FIG. 5 is a plan view of the protective lid device.
[Explanation of symbols]
1 Sewer pipe Sewer pipe 4 Rise pipe 6 Upper end opening
10 Support base
11 Mating hole
12 intervals
13 Protrusion
14 Cut groove
15 Closure lid
21 Lid receiving frame
25 Inspection lid

Claims (2)

下水管路に下端を連通接続されるとともに上端開口部に閉塞蓋体を開閉自在に設けかつ合成樹脂にて成形した立ち上り管の上部位置に設置される下水用点検口防護蓋装置であって、
前記立ち上り管の上部外周面に遊嵌される嵌合孔を開口した支持台座と、
この支持台座上に支持され点検用蓋体を開閉自在に取付ける蓋受け枠体とを備え、
前記支持台座の嵌合孔の内周面に先端が前記立ち上り管の上部外周面と間隔をもって対向される複数個の突起部を突設した
ことを特徴とする下水用点検口防護蓋装置。
A sewage inspection port protective lid device that is connected to a sewage pipe at the lower end and is provided with a closed lid at the upper end opening so as to be freely opened and closed and is installed at an upper position of a riser pipe formed of synthetic resin,
A support pedestal having a fitting hole that is loosely fitted to the upper outer peripheral surface of the riser, and
A lid receiving frame that is supported on the support pedestal and attaches a lid for inspection in an openable and closable manner;
A sewage inspection port protective lid device, wherein a plurality of protrusions projecting from the inner peripheral surface of the fitting hole of the support pedestal at a distance from the upper outer peripheral surface of the riser pipe are provided.
支持台座の嵌合孔の内周面に突設した各突起部の上面側にこの突起部を切離し可能とする切り溝部を形成した
ことを特徴とする請求項1記載の下水用点検口防護蓋装置。
2. A protective cover for a sewage inspection port according to claim 1, wherein a kerf portion is formed on the upper surface side of each protrusion protruding from the inner peripheral surface of the fitting hole of the support base so that the protrusion can be cut off. apparatus.
JP01157197A 1997-01-24 1997-01-24 Sewage inspection port protective lid device Expired - Lifetime JP3793307B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP01157197A JP3793307B2 (en) 1997-01-24 1997-01-24 Sewage inspection port protective lid device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP01157197A JP3793307B2 (en) 1997-01-24 1997-01-24 Sewage inspection port protective lid device

Publications (2)

Publication Number Publication Date
JPH10204905A JPH10204905A (en) 1998-08-04
JP3793307B2 true JP3793307B2 (en) 2006-07-05

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2803859B1 (en) * 2000-01-18 2002-12-27 Roger Communeau LOOKING CLOSURE PLATE SUPPORT DEVICE
JP6837794B2 (en) * 2016-09-30 2021-03-03 エバタ株式会社 Seat
WO2023248351A1 (en) * 2022-06-21 2023-12-28 日本電信電話株式会社 Reinforcing method for underground structure
WO2023248354A1 (en) * 2022-06-21 2023-12-28 日本電信電話株式会社 Reinforcement method for underground buried structure

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