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JP3550286B2 - Connection structure between vertical pipe and sewer pipe - Google Patents
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JP3550286B2 - Connection structure between vertical pipe and sewer pipe - Google Patents

Connection structure between vertical pipe and sewer pipe Download PDF

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Publication number
JP3550286B2
JP3550286B2 JP30417497A JP30417497A JP3550286B2 JP 3550286 B2 JP3550286 B2 JP 3550286B2 JP 30417497 A JP30417497 A JP 30417497A JP 30417497 A JP30417497 A JP 30417497A JP 3550286 B2 JP3550286 B2 JP 3550286B2
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Japan
Prior art keywords
pipe
vertical pipe
vertical
sewer
connection structure
Prior art date
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JP30417497A
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Japanese (ja)
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JPH1136429A (en
Inventor
裕英 中川
敬一 石田
芳和 丸下
俊秀 野中
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Sekisui Chemical Co Ltd
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Sekisui Chemical Co Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は、縦管と下水管との接続構造に関するものである。
【0002】
【従来の技術】
従来、図6に示すように、下水管1の一端をマンホール2内に導入する一方、マンホール2内に縦管3を配設し、下水管1の一端と縦管3の上端とを継手4を介して接続し、さらに、縦管3の下端にマンホール2内の底部に設置した曲がり管5に接続することにより、下水管1からマンホール2内に流入された下水を縦管3を介してマンホール2内の底部、例えば、下水本管に導入することが知られている。
【0003】
この場合、縦管3が長い場合、縦管3の下端から流出される下水の落下衝撃が大きくなるため、マンホール2の底部を破損するおそれがある。このため、中空軸61の外周面に螺旋状フライト62を設けてなるスクリュウ軸6を縦管3の内部に配設し、下水管1から継手4を経て縦管3に導入された下水をスクリュウ軸6の螺旋状フライト62と縦管3とで形成される螺旋状の屈曲流下路に沿って流下させることにより、流下する下水を減勢させ、マンホール2の底部への落下衝撃を軽減させることが出願人から提案されている(例えば、特開平8−41915号公報参照)。
【0004】
なお、屈曲流下路としては、騒音や臭気などを考慮すると、衝撃力の発生しにくいスクリュウ軸6による螺旋状流下路が好ましいが、それ以外に、上方に膨出する半球殻状の案内板が回転可能に設けられたもの(前述の特開平8−41915号公報参照)や、流路の一部を遮蔽する少なくとも1枚の遮蔽板を設けたもの(例えば、特開平8−41914号公報参照)であってもよい。
【0005】
【発明が解決しようとする課題】
しかしながら、前述した縦管においては、流下する下水を屈曲流下路によって減勢させることから、屈曲流下路を形成するスクリュウ軸などや縦管そのものの磨耗を避けることはできない。また、屈曲流下路において汚物などが詰まることも予測される。したがって、最終的に磨耗した縦管を交換する必要があるが、下水管の一端と縦管の上端は、継手に差し込まれて接続されていることから、縦管を交換するためには、下水管と継手との接続部を切断しなければならない。
【0006】
このような切断作業は、マンホール内の狭い空間で、かつ、下水が流れていた悪環境下で行わなけれならず、危険を伴う他、多くの作業時間を必要とするものである。
【0007】
本発明は、このような問題点に鑑みてなされたもので、下水管と簡単に接続し、あるいは、離脱させることのできる縦管と下水管との接続構造を提供するものである。
【0008】
【課題を解決するための手段】
請求項1記載(本発明1)の縦管と下水管との接続構造は、縦管の内面との間に下水を屈曲して流下させる屈曲流下路が形成されるとともに、縦管の上端部に流入管を有し、該流入管の一端と下水管の一端とが突き合わされ、その突き合わせ部の外周に弾性板が装着され、その弾性板の外周に帯金が装着されているものである。
【0009】
請求項2記載(本発明2)の縦管と下水管との接続構造は、縦管の内面との間に下水を屈曲して流下させる屈曲流下路が形成されるとともに、縦管の上端部に流入管を有し、該流入管の一端と下水管の一端とが突き合わされ、その突き合わせ部の外周に、C字状で開閉機構を有する帯金が装着されているものである。
【0010】
請求項3記載(本発明3)の縦管と下水管との接続構造は、本発明1,2の縦管において、縦管が、マンホール壁面に固定されているものである。
【0011】
【発明の実施の形態】
以下、本発明の実施の形態を図面に基づいて説明する。
【0012】
図1は、本発明1の縦管と下水管との接続構造を示す概略図である。縦管3には、屈曲流下路を形成するため、スクリュウ軸6が配設されている。そして、縦管3はマンホール2に支持されており、その上端部に流入管31を有している。この流入管31の一端と下水管1の一端とは、突き合わせ接合されている。
【0013】
図2は、図1のA部を拡大して示す断面図である。
すなわち、図2に示すように、下水管1の一端と縦管3の上端部に設けられている流入管31の一端との突き合わせ部およびその端縁部には、水膨張コーキング剤11が外周側から充填され、次いで、水膨張コーキング剤11の外周に弾性板12が装着された後、弾性板12の外周にC型のステンレス製帯金13が巻回されてボルトで締結されている。ここで、弾性板12は、EPDM(エチレン・ポリプロピレンゴム)で形成されている他、下水管1および縦管3および縦管3の上端部に設けられている流入管31は、繊維強化熱硬化性樹脂とモルタルとの複合材料で形成されている。
【0014】
このような突き合わせ接合を採用することにより、接合して一定期間が経過した後、帯金13および弾性板12を順に外すことにより、縦管3の上端部に設けられている流入管31の一端を下水管1の一端から簡単に離脱させて縦管3を真上に引き上げることができ、約半日で取り替えることが可能であった。ちなみに、下水管1と縦管3とを継ぎ手4を介して接合している従来構造の場合には、下水管1の切断に約半日を必要とし、さらに、新しい縦管3を入れ替える際、接合部の養生に2日程度必要であった。
【0015】
なお、弾性板12によって下水管1と縦管3の上端部に設けられている流入管31との突き合わせ部が密封されていることから、その突き合わせ部からの漏水は確実に防止され、また、帯金13によって弾性板12が強固に固定されているため、弾性板12による突き合わせ部の密封性能を長期にわたって確保することができる。
【0016】
また、帯金13は、C型一つ割りのものを示したが、本発明2の縦管と下水管との接続構造では、図3(a)に示したように、蝶番131等の開閉機構を有するものである必要がある。このような帯金13を使用することにより図3(b)に示すように、簡単に開閉できる。
【0017】
図4は、本発明の縦管の上端部に設けられている流入管と下水管の接合部の一例を、一部省略して示す断面図である。下水管1の外径と縦管3の上端部に設けられている流入管31の外径とが相違する場合は、小径側の管である流入管31の外径を増肉して下水管1の外径と略同径とした後、同様に突き合わせ接合すればよい。すなわち、縦管3の上端部に設けられている小径側の流入管31の外径を増肉するには、その端部に不飽和ポリエステル樹脂などの熱硬化性樹脂を含浸した繊維マット14、例えば、ガラスマットを順次積層した後、含浸樹脂が半硬化状態で発泡体15を巻き回し、さらに、発泡体15の外周に再び熱硬化性樹脂を含浸した繊維マット14を積層し、樹脂の硬化後、下水管1の外径と略同径となるように研磨する。
【0018】
このように、下水管1の外径と縦管3の上端部に設けられている流入管31との外径が略同一になれば、前述したように、下水管1と縦管3の上端部に設けられている流入管31との突き合わせ部およびその端縁部に水膨張コーキング剤11を外周側から充填した後、水膨張コーキング剤11の外周に弾性板12を装着し、次いで、弾性板12の外周にC型のステンレス製帯金13を巻回してボルトで締結する。ここにおいても、弾性板12は、EPDMで形成されている他、縦管3は、繊維強化熱硬化性樹脂とモルタルとの複合材料で形成されている。また、下水管1には、ヒューム管が使用されている。
【0019】
この実施形態においても、接合後、帯金13および弾性板12を順に外すことにより、縦管3の上端部に設けられている流入管31の一端を下水管1の一端から簡単に離脱させて縦管3を真上に引き上げることができ、約半日で取り替えることができた。また、弾性板12および帯金13によって下水管1と縦管3の上端部に設けられている流入管31との突き合わせ部からの漏水が確実に防止されるとともに、弾性板12による密封性能が長期にわたって確保される点は、前述した実施形態の場合と同様である。
【0020】
ここで、弾性板12として安価で下水に対する耐薬品性に優れたEPDM製を例示したが、ゴム質であればよく、例えば、ウレタン樹脂をはじめ、SBR(スチレン・ブタジェンゴム)、NBR(ニトリルゴム)、シリコンなどのゴム系材料を使用することができる。また、発泡体であってもよく、例えば、前述したゴム系材料の発泡体の他、塩ビやアクリルなどの発泡体を使用することもできる。この場合、弾性板12の厚みは、厚肉であると下水管1や縦管3の上端部に設けられている流入管31に沿わない部分が発生する可能性があることから、薄肉のもの(0.3〜8mm程度)を複数個巻回するのが好ましい。
【0021】
また、帯金13は、C型のものを示したが、二つ割り以上で締結するものでもよく、その材質は、金属製を使用する場合は、発錆を考慮してステンレス製が好ましい。
【0022】
さらに、縦管3の上端部に設けられている流入管31もしくは下水管1を他方の管径に合わせて増肉する場合、基本的には管の材質と同一材料が好ましいが、オレフィン系樹脂を除く樹脂製管の場合には、FRPによる増肉が可能である。このようにFRPを積層して管径を合わせる際、管径の差が大きい場合には、前述したように、積層するFRPの間にウレタンをはじめポリスチレン−エチレン共重合体などの発泡体15をサンドイッチ状に挟むこともできる。また、金属製管の場合には、フランジ状のリングを溶接すればよい。
【0023】
なお、屈曲流下路をスクリュウ軸6で形成する場合、その材質としては、金属をはじめ非金属、例えば、樹脂製を採用することができ、軽量であるため、樹脂製が好ましい。この場合、利用可能な樹脂として、熱可塑性樹脂では、例えば、塩化ビニル樹脂をはじめとして、ポリエチレンやポリプロピレンなどのオレフィン系樹脂やメタクリル樹脂などを採用することができ、また、熱硬化性樹脂では、不飽和ポリエステル樹脂、ビニルエステル樹脂、エポキシ樹脂などを採用することができる。さらに、これらの樹脂を無機繊維、ガラス繊維、有機繊維、炭素繊維、アラミド繊維、ビニロン繊維などで繊維強化してもよい。特に、縦管がFRP(繊維強化樹脂)で形成されている場合、塩化ビニル樹脂や不飽和ポリエステル樹脂を使用したFRPが安価であり、望ましい。
【0024】
図5は、本発明3の縦管と下水管との接続構造の一例を示す断面図である。
縦管3はマンホール2壁面に、2本の支柱21と、二つ割りの帯金32とで固定されている。マンホール2壁面にはアンカーボルト22が打ちつけられており、支柱21を螺合している。帯金32の両端付近には、支柱21の端部を挿入するための穴が開けられており、この穴に支柱21が挿入されている。支柱21の、帯金32の穴に挿入されている側の端部には、螺子加工が施されており、ナット33・33で螺合されている。
支柱21と、帯金32の材質は特に限定されないが、金属製であってもよいし、樹脂製であってもよいが、金属製を使用する場合は、発錆を考慮してステンレス製が好ましい。
【0025】
なお、縦管3と帯金32との間には、ゴム製の緩衝材等を嵌入することにより、縦管3と帯金32との滑りを防止することができるので好ましい。
このようにして縦管3をマンホール2壁面に固定することにより、新しい縦管3を入れ替える際、接合部が安定し、作業性が向上するとともに、縦管3の上端部に設けられている流入管31の一端と下水管の一端との接合部の補強にもなる。
【0026】
【発明の効果】
本発明1の縦管と下水管との接続構造によれば、下水管の一端と縦管の上端部に設けられている流入管の一端との突き合わせ部の外周に弾性板が装着され、その弾性板の外周に帯金が装着されていることにより、下水管の一端と縦管の上端部に設けられている流入管の一端との突き合わせ接合がさらに簡単にできる。
【0027】
本発明2の縦管によれば、下水管の一端と縦管の上端部に設けられている流入管の一端との突き合わせ部の外周に、C字状で開閉機構を有する帯金が装着されていることにより、下水管の一端と縦管の上端部に設けられている流入管の一端との突き合わせ接合がさらに簡単にできるとともに、下水管または縦管の上端部に設けられている流入管の長さが帯金の幅より短い場合であっても、帯金の取り付けが可能なため、狭いマンホール内においても接合が可能である。
【0028】
下水管の一端と縦管の上端部に設けられている流入管の一端との突き合わせ部が、小径側の一端外径を他方の外径とほぼ同一となるように増肉されているいると、下水管の外径と流入管の外径とが相違する場合であっても、下水管の一端と縦管の上端部に設けられている流入管の一端との突き合わせ接合が簡単にできる。
【0029】
本発明3の縦管と下水管との接続構造によれば、縦管が、マンホール壁面に固定されているので、効率よく縦管の取り替え作業を行うことができるとともに、突き合わせ接合部の補強にもなる。
【図面の簡単な説明】
【図1】本発明1の縦管と下水管との接続構造を示す概略図である。
【図2】図1のA部を拡大した断面図である。
【図3】本発明2の縦管と下水管との接続構造に使用する帯金を示す側面図であり(a)は閉じた状態、(b)は開いた状態を示す。
【図4】縦管の上端部に設けられる流入管と下水管の接合部の一例を、一部省略して示す断面図である。
【図5】本発明3の縦管と下水管との接続構造の一例を示す断面図である。
【図6】従来の縦管を示す概略図である。
【符号の説明】
1 下水管
2 マンホール
3 縦管
31 流入管
6 スクリュウ軸
11 水膨張コーキング剤
12 弾性板
13 帯金
131 蝶番
14 樹脂を含浸した繊維マット
15 発泡体
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a connection structure between a vertical pipe and a sewer pipe .
[0002]
[Prior art]
Conventionally, as shown in FIG. 6, one end of a sewer pipe 1 is introduced into a manhole 2, while a vertical pipe 3 is disposed in the manhole 2, and one end of the sewer pipe 1 and an upper end of the vertical pipe 3 are connected to a joint 4. And further connected to a bent pipe 5 installed at the lower end of the manhole 2 at the lower end of the vertical pipe 3 so that the sewage flowing into the manhole 2 from the sewage pipe 1 can be passed through the vertical pipe 3. It is known to introduce it into the bottom of the manhole 2, for example, into the sewage mains.
[0003]
In this case, if the vertical pipe 3 is long, a drop impact of the sewage flowing out from the lower end of the vertical pipe 3 becomes large, so that the bottom of the manhole 2 may be damaged. Therefore, a screw shaft 6 having a spiral flight 62 provided on the outer peripheral surface of a hollow shaft 61 is disposed inside the vertical pipe 3, and the sewage introduced from the sewage pipe 1 into the vertical pipe 3 via the joint 4 is removed by the screw. By flowing down along a helical bent downflow path formed by the helical flight 62 of the shaft 6 and the vertical pipe 3, the sewage flowing down is reduced, and the impact of falling to the bottom of the manhole 2 is reduced. Has been proposed by the applicant (see, for example, JP-A-8-41915).
[0004]
In addition, in consideration of noise, odor, and the like, a spiral flow path with a screw shaft 6 that does not easily generate an impact force is preferable as the bent flow path. In addition, a hemispherical shell-shaped guide plate that bulges upward is also preferable. The one provided rotatably (see the above-mentioned Japanese Patent Application Laid-Open No. 8-41915) and the one provided with at least one shielding plate for shielding a part of the flow path (for example, see Japanese Patent Application Laid-Open No. 8-41914) ).
[0005]
[Problems to be solved by the invention]
However, in the above-described vertical pipe, since the flowing sewage is reduced by the bent downflow path, wear of the screw shaft and the like forming the bent downflow path and the vertical pipe itself cannot be avoided. It is also expected that dirt and the like are clogged in the bent downflow path. Therefore, it is necessary to replace the worn vertical pipe, but since one end of the drain pipe and the upper end of the vertical pipe are inserted and connected to the joint, the lower pipe must be replaced in order to replace the vertical pipe. The connection between the water pipe and the joint must be cut.
[0006]
Such a cutting operation has to be performed in a narrow space in the manhole and in a bad environment in which sewage is flowing, which involves danger and requires a lot of operation time.
[0007]
The present invention has been made in view of such problems, and provides a connection structure between a vertical pipe and a sewer pipe that can be easily connected to or separated from the sewer pipe .
[0008]
[Means for Solving the Problems]
In the connection structure for a vertical pipe and a sewer pipe according to claim 1 (the present invention 1), a bent downflow path is formed between the inner surface of the vertical pipe to bend and drain the sewage, and an upper end of the vertical pipe. Has an inflow pipe, one end of the inflow pipe and one end of a sewer pipe are abutted, an elastic plate is mounted on an outer periphery of the abutting portion, and a band is mounted on an outer periphery of the elastic plate. .
[0009]
The connecting structure between the vertical pipe and the sewer pipe according to claim 2 (the present invention 2) has a bent downflow path for bending the sewage and flowing down between the inner surface of the vertical pipe and the upper end of the vertical pipe. , One end of the inflow pipe and one end of the sewer pipe are abutted, and a C-shaped band having an opening and closing mechanism is attached to the outer periphery of the abutting portion.
[0010]
The connecting structure between the vertical pipe and the sewer pipe according to claim 3 (the present invention 3) is the vertical pipe according to the first or second present invention, in which the vertical pipe is fixed to a manhole wall surface.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0012]
FIG. 1 is a schematic diagram illustrating a connection structure between a vertical pipe and a sewer pipe according to the first embodiment of the present invention. The vertical pipe 3 is provided with a screw shaft 6 for forming a bent downflow path. The vertical pipe 3 is supported by the manhole 2 and has an inflow pipe 31 at its upper end . One end of the inflow pipe 31 and one end of the sewer pipe 1 are butt-joined.
[0013]
FIG. 2 is an enlarged cross-sectional view showing a portion A in FIG.
That is, as shown in FIG. 2, the water-expanding caulking agent 11 is provided at the abutting portion between one end of the sewer pipe 1 and one end of the inflow pipe 31 provided at the upper end of the vertical pipe 3 and at the edge thereof. After the elastic plate 12 is mounted on the outer periphery of the water expansion caulking agent 11, a C-shaped stainless steel band 13 is wound around the outer periphery of the elastic plate 12 and fastened with bolts. Here, the elastic plate 12 is formed of EPDM (ethylene / polypropylene rubber), and the drain pipe 1, the vertical pipe 3, and the inflow pipe 31 provided at the upper end of the vertical pipe 3 are made of fiber-reinforced thermosetting. It is formed of a composite material of a conductive resin and mortar.
[0014]
By adopting such a butt joint, after a certain period of time has elapsed after joining, the band 13 and the elastic plate 12 are sequentially removed, thereby forming one end of the inflow pipe 31 provided at the upper end of the vertical pipe 3. Was easily detached from one end of the sewer pipe 1 and the vertical pipe 3 could be pulled up directly, and it was possible to replace it in about half a day. By the way, in the case of the conventional structure in which the sewer pipe 1 and the vertical pipe 3 are joined via the joint 4, it takes about half a day to cut the sewer pipe 1, and when replacing a new vertical pipe 3, It took about two days to cure the part.
[0015]
Since the butt portion between the drain pipe 1 and the inflow pipe 31 provided at the upper end of the vertical pipe 3 is sealed by the elastic plate 12, water leakage from the butt portion is reliably prevented, and Since the elastic plate 12 is firmly fixed by the metal band 13, the sealing performance of the butted portion by the elastic plate 12 can be secured for a long period of time.
[0016]
Further, although the band 13 is shown as a single C type , in the connection structure between the vertical pipe and the sewer pipe according to the second embodiment of the present invention, as shown in FIG. It must have a mechanism. By using such a band 13, as shown in FIG. 3B, it can be easily opened and closed.
[0017]
FIG. 4 is a cross-sectional view, partially omitted, showing an example of a joint portion between the inflow pipe and the sewer pipe provided at the upper end of the vertical pipe of the present invention. When the outer diameter of the drain pipe 1 and the outer diameter of the inflow pipe 31 provided at the upper end of the vertical pipe 3 are different, the outer diameter of the inflow pipe 31 which is the smaller diameter pipe is increased to increase the thickness of the drain pipe. After making the outer diameter substantially the same as the outer diameter of No. 1, it is only necessary to perform butt joining in the same manner. That is, in order to increase the outer diameter of the small-diameter-side inflow pipe 31 provided at the upper end of the vertical pipe 3, the fiber mat 14 whose end is impregnated with a thermosetting resin such as an unsaturated polyester resin, For example, after sequentially laminating glass mats, the foam 15 is wound around the impregnated resin in a semi-cured state, and a fiber mat 14 impregnated with a thermosetting resin is again laminated on the outer periphery of the foam 15 to cure the resin. Thereafter, polishing is performed so that the outer diameter of the drain pipe 1 is substantially the same as the outer diameter.
[0018]
As described above, when the outer diameter of the drain pipe 1 and the outer diameter of the inflow pipe 31 provided at the upper end of the vertical pipe 3 become substantially the same, as described above, the upper ends of the drain pipe 1 and the vertical pipe 3 After filling the butted portion with the inflow pipe 31 provided in the portion and the edge thereof with the water expansion caulking agent 11 from the outer peripheral side, the elastic plate 12 is attached to the outer periphery of the water expansion caulking agent 11, A C-shaped stainless steel band 13 is wound around the outer periphery of the plate 12 and fastened with bolts. Also in this case, the elastic plate 12 is formed of EPDM, and the vertical tube 3 is formed of a composite material of a fiber-reinforced thermosetting resin and mortar. Further, a fume pipe is used for the drain pipe 1.
[0019]
Also in this embodiment, after bonding, by removing the ferrules 13 and elastic plate 12 in this order, one end of the inlet pipe 31 provided on the upper end of the vertical pipe 3 easily is disengaged from one end of the sewer pipe 1 The vertical pipe 3 could be lifted right above and replaced in about half a day. Further, the elastic plate 12 and the metal band 13 reliably prevent water from leaking from a butt portion between the drain pipe 1 and the inflow pipe 31 provided at the upper end of the vertical pipe 3, and the sealing performance of the elastic plate 12 is improved. The point secured over a long period is the same as in the above-described embodiment.
[0020]
Here, the elastic plate 12 is made of EPDM, which is inexpensive and has excellent chemical resistance to sewage, but may be made of rubber. For example, urethane resin, SBR (styrene / butadiene rubber), NBR (nitrile rubber) And a rubber-based material such as silicon. In addition, a foam may be used. For example, in addition to the foam of the rubber-based material described above, a foam such as PVC or acryl may be used. In this case, if the thickness of the elastic plate 12 is thick, a portion that does not follow the inflow pipe 31 provided at the upper end of the sewer pipe 1 or the vertical pipe 3 may be generated. (About 0.3 to 8 mm) is preferably wound plural times.
[0021]
Further, although the band 13 is shown as a C-shaped one, it may be fastened in two or more parts. When a metal is used, the material is preferably made of stainless steel in consideration of rusting.
[0022]
Further, when the inflow pipe 31 or the sewage pipe 1 provided at the upper end of the vertical pipe 3 is increased in thickness according to the diameter of the other pipe, basically the same material as that of the pipe is preferable. In the case of resin pipes except for (1), the wall thickness can be increased by FRP. When the pipe diameters are adjusted by stacking the FRPs in this way, if the difference in the pipe diameters is large, as described above, a foam 15 such as urethane or a polystyrene-ethylene copolymer is placed between the FRPs to be stacked. It can also be sandwiched. In the case of a metal pipe, a flange-shaped ring may be welded.
[0023]
In the case where the bent downflow path is formed by the screw shaft 6, the material may be a non-metal such as a metal, for example, a resin-made material, and is preferably made of a resin because of its light weight. In this case, as a usable resin, in the case of a thermoplastic resin, for example, a vinyl chloride resin, an olefin resin such as polyethylene or polypropylene, a methacrylic resin, or the like can be adopted. An unsaturated polyester resin, a vinyl ester resin, an epoxy resin, or the like can be used. Further, these resins may be fiber-reinforced with inorganic fibers, glass fibers, organic fibers, carbon fibers, aramid fibers, vinylon fibers and the like. In particular, when the vertical pipe is formed of FRP (fiber reinforced resin), FRP using vinyl chloride resin or unsaturated polyester resin is inexpensive and desirable.
[0024]
FIG. 5 is a cross-sectional view illustrating an example of a connection structure between a vertical pipe and a sewer pipe according to the third embodiment of the present invention.
The vertical pipe 3 is fixed to the wall surface of the manhole 2 with two columns 21 and a split metal band 32. An anchor bolt 22 is hit on the wall surface of the manhole 2, and the support column 21 is screwed thereto. A hole for inserting the end of the column 21 is formed near both ends of the band 32, and the column 21 is inserted into this hole. The end of the support 21 on the side inserted into the hole of the band 32 is threaded, and is screwed together with nuts 33.
The materials of the column 21 and the metal band 32 are not particularly limited, but may be made of metal or resin, but when metal is used, stainless steel is used in consideration of rusting. preferable.
[0025]
It is preferable to insert a rubber cushioning material or the like between the vertical tube 3 and the band 32 because slippage between the vertical tube 3 and the band 32 can be prevented.
By fixing the vertical pipe 3 to the wall surface of the manhole 2 in this manner, when a new vertical pipe 3 is replaced, the joining portion is stabilized, workability is improved, and the inflow provided at the upper end of the vertical pipe 3 is provided. It also reinforces the joint between one end of the pipe 31 and one end of the drain.
[0026]
【The invention's effect】
According to the connection structure between the vertical pipe and the sewer pipe according to the first aspect of the present invention, the elastic plate is attached to the outer periphery of a butt portion between one end of the sewer pipe and one end of the inflow pipe provided at the upper end of the vertical pipe. By attaching the metal band to the outer periphery of the elastic plate, the butt joint between one end of the drain pipe and one end of the inflow pipe provided at the upper end of the vertical pipe can be further easily performed.
[0027]
According to the vertical pipe of the second aspect of the present invention, a C-shaped band having an opening and closing mechanism is attached to the outer periphery of a butt portion between one end of the sewer pipe and one end of the inflow pipe provided at the upper end of the vertical pipe. By doing so, the butt joint between one end of the sewer pipe and one end of the inflow pipe provided at the upper end of the vertical pipe can be further simplified, and the inflow pipe provided at the upper end of the sewer pipe or the vertical pipe Even if the length is shorter than the width of the band, the band can be attached, so that bonding can be performed even in a narrow manhole.
[0028]
When the butted portion of one end of the drain pipe and one end of the inflow pipe provided at the upper end of the vertical pipe is thickened so that the outer diameter of one end on the small diameter side is substantially the same as the other outer diameter. Even when the outer diameter of the sewer pipe is different from the outer diameter of the inflow pipe, the butt joint between one end of the sewer pipe and one end of the inflow pipe provided at the upper end of the vertical pipe can be easily performed.
[0029]
According to the connection structure between the vertical pipe and the sewer pipe according to the third aspect of the present invention, since the vertical pipe is fixed to the wall of the manhole, the vertical pipe can be efficiently replaced and the butt joint can be reinforced. Also.
[Brief description of the drawings]
FIG. 1 is a schematic view showing a connection structure between a vertical pipe and a sewer pipe according to the first embodiment of the present invention.
FIG. 2 is an enlarged sectional view of a portion A in FIG.
FIGS. 3A and 3B are side views showing a strap used for a connection structure between a vertical pipe and a sewer pipe according to the second embodiment of the present invention, wherein FIG. 3A shows a closed state, and FIG.
FIG. 4 is a cross-sectional view showing an example of a joint part of an inflow pipe and a sewer pipe provided at an upper end part of a vertical pipe , with a part thereof being omitted;
FIG. 5 is a cross-sectional view showing an example of a connection structure between a vertical pipe and a sewer pipe according to the third embodiment of the present invention.
FIG. 6 is a schematic view showing a conventional vertical pipe.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Sewage pipe 2 Manhole 3 Vertical pipe 31 Inflow pipe 6 Screw axis 11 Water expansion caulking agent 12 Elastic plate 13 Metal strap 131 Hinge 14 Resin impregnated fiber mat 15 Foam

Claims (3)

縦管の内面との間に下水を屈曲して流下させる屈曲流下路が形成されるとともに、縦管の上端部に流入管を有し、該流入管の一端と下水管の一端とが突き合わされ、その突き合わせ部の外周に弾性板が装着され、その弾性板の外周に帯金が装着されていることを特徴とする縦管と下水管との接続構造A bent downflow path is formed between the inner surface of the vertical pipe and the drainage pipe so as to bend the sewage and has an inflow pipe at an upper end of the vertical pipe. A connection structure between a vertical pipe and a sewer pipe, wherein an elastic plate is attached to an outer periphery of the butted portion, and a band is attached to an outer periphery of the elastic plate. 縦管の内面との間に下水を屈曲して流下させる屈曲流下路が形成されるとともに、縦管の上端部に流入管を有し、該流入管の一端と下水管の一端とが突き合わされ、その突き合わせ部の外周に、C字状で開閉機構を有する帯金が装着されていることを特徴とする縦管と下水管との接続構造A bent downflow path is formed between the inner surface of the vertical pipe and the drainage pipe so as to bend the sewage and has an inflow pipe at an upper end of the vertical pipe. A connection structure between a vertical pipe and a sewer pipe , wherein a C-shaped band having an opening / closing mechanism is mounted on the outer periphery of the butted portion. 縦管が、マンホール壁面に固定されていることを特徴とする請求項1,2の何れかに記載の縦管と下水管との接続構造 The connection structure between a vertical pipe and a sewer according to any one of claims 1 and 2, wherein the vertical pipe is fixed to a wall surface of the manhole.
JP30417497A 1996-11-07 1997-11-06 Connection structure between vertical pipe and sewer pipe Expired - Fee Related JP3550286B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP30417497A JP3550286B2 (en) 1996-11-07 1997-11-06 Connection structure between vertical pipe and sewer pipe

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP29523596 1996-11-07
JP12852197 1997-05-19
JP8-295235 1997-05-19
JP9-128521 1997-05-19
JP30417497A JP3550286B2 (en) 1996-11-07 1997-11-06 Connection structure between vertical pipe and sewer pipe

Publications (2)

Publication Number Publication Date
JPH1136429A JPH1136429A (en) 1999-02-09
JP3550286B2 true JP3550286B2 (en) 2004-08-04

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JP30417497A Expired - Fee Related JP3550286B2 (en) 1996-11-07 1997-11-06 Connection structure between vertical pipe and sewer pipe

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CN109326987A (en) * 2017-08-01 2019-02-12 平高集团有限公司 GIL cylinder abutting joint vehicle

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