JP2004340192A - Flexible fitting for ribbed pipe and ribbed pipe connecting method - Google Patents

Flexible fitting for ribbed pipe and ribbed pipe connecting method Download PDF

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Publication number
JP2004340192A
JP2004340192A JP2003134992A JP2003134992A JP2004340192A JP 2004340192 A JP2004340192 A JP 2004340192A JP 2003134992 A JP2003134992 A JP 2003134992A JP 2003134992 A JP2003134992 A JP 2003134992A JP 2004340192 A JP2004340192 A JP 2004340192A
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Prior art keywords
peripheral surface
joint
adapter
rib
outer peripheral
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JP2003134992A
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JP4319462B2 (en
Inventor
Wataru Komura
亘 小村
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Nishikawa Rubber Co Ltd
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Nishikawa Rubber Co Ltd
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  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
  • Joints Allowing Movement (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fitting for a ribbed pipe allowing simplification of the at-site work and capable of connecting the ribbed pipe to the side wall of a manhole in good workmanship and to provide a ribbed pipe connecting method allowing easy mounting at the site. <P>SOLUTION: The fitting for the ribbed pipe is composed of a cylindrical joint 1 with its front inserted into a hole H formed in the side wall W of the manhole and having a hose band 1a fitted on the rear peripheral surface, an adapter 2 to fit the ring-shaped cylinder on the front peripheral surface of the cylinder body part 2a and having a front part fitted to the rear of the joint 1, and a fastening member 3 fitted on the rear peripheral surface of the adapter 2 and having a hose band 3b wound round the peripheral surface of a fixing aid member 3a having an approximately wedge shaped section fitting between ring-shaped ribs R on the ribbed pipe P. The joint 1 is fixed to the adapter 2 by tightening the hose band 1a, and the diameter of the aid member 3a is made smaller by fastening the hose band 3b, and thereby the adapter 2 is secured to the ribbed pipe P. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、下水道等のマンホールの側壁に、リブ付きパイプ（以下、「リブ管」と言う）を取付けるための耐震性のある可撓性継手、およびその継手を使用したリブ管の接続方法に関するものである。
【０００２】
【従来の技術】
従来、下水道用として使用される管としては、いわゆる塩ビ管を始めとして様々な種類があり、また、それらの管をマンホールの側壁に取付けるために種々の継手が開発され、使用されている。
【０００３】
その中で、外周面に多数の環状リブＲを有するリブ管Ｐ用の継手がある。この継手は、一般的に、図５に示すような構成となっている。すなわち、主に可撓性材料で形成した継手部材１０、ポリエチレン製環状パーツ１２、ゴム輪１３、およびバンド材１１で構成されている。
そして、その取付けは、まず、継手部材１０をマンホールＭの側壁Ｗに形成した孔Ｈに取付け（図５（ａ））、次に、その継手部材１０に、環状パーツ１２を嵌合したリブ管Ｐを挿入し（図５（ｂ））、最後に、バンド材１１で継手部材１０を締付け、ゴム輪１３によってシール性を確保している（図５（ｃ））。
【０００４】
【発明が解決しようとする課題】
しかしながら、従来のリブ管用継手には、以下のような問題点がある。
（１）環状パーツ１２をリブ管Ｐに嵌合するための専用治具が必要であり、その取扱いおよび作業が面倒である。従って、リブ管取付けの良否が現場での作業に大きく左右され、作業者の熟練の程度によって差が生じる。
（２）環状パーツ１２をリブ管Ｐに嵌合する際、現場で、ゴム輪１３に潤滑剤を塗布しなければならないので、その嵌合作業が面倒である。
（３）この際、潤滑剤の塗布量によって作業性が大きく左右されるので、充分塗布すれば作業性は向上するものの、それだけ潤滑剤のコストが嵩むので、そのあたりの加減が困難であり、作業が厄介である。
【０００５】
そこで、本発明の目的とするところは、現場での作業を簡素化して、作業者の熟練の程度に関わりなく、リブ管をマンホールの側壁に良好に接続することのできるリブ管用継手を提供することにある。また、そのような継手を使用して、現場での取付けが容易な、リブ管の接続方法を提供することにある。
【０００６】
【課題を解決するための手段】
上記の目的を達成するために、本発明の請求項１に記載のリブ管用可撓継手は、マンホール（Ｍ）の側壁（Ｗ）に穿設された孔（Ｈ）に、フランジ状の環状リブ（Ｒ）が外周面に多数形成されたリブ管（Ｐ）を接続するための可撓継手であって、前記孔（Ｈ）に、前記マンホール（Ｍ）側である前部が挿入されて取付けられ、後部外周面にホースバンド（１ａ）を嵌着した弾性材製で筒状のジョイント（１）と、弾性材製である筒本体部（２ａ）の前部外周面に剛性の高い環状筒（２ｂ）を嵌合し、前部が前記ジョイント（１）の後部に嵌入するアダプター（２）と、前記アダプター（２）の後部外周面に嵌合し、前記リブ管（Ｐ）の隣接する環状リブ（Ｒ）間に嵌り込む断面が略くさび状の固定用補助材（３ａ）の外周面にホースバンド（３ｂ）を巻回した締結部材（３）とで構成し、前記ホースバンド（１ａ）の締め付けで、前記ジョイント（１）の後部内周面を前記アダプター（２）の前部外周面に固定すると共に、前記ホースバンド（３ｂ）の締め付けで固定用補助材（３ａ）の径を小さくすることによって、前記アダプター（２）の後部内周側を、挿入された前記リブ管（Ｐ）の隣接する環状リブ（Ｒ）間に押し付けて固定することを特徴とする。
【０００７】
また請求項２に記載の発明は、前記固定用補助材（３ａ）の内周面（３ｃ）に摩擦低減材を被覆したことを特徴とする。
【０００８】
さらに、請求項３に記載のリブ管接続方法は、請求項１又は２に記載のリブ管用可撓継手を使用した接続方法であって、前記マンホール側壁（Ｗ）の孔（Ｈ）に、前記ジョイント（１）とアダプター（２）を取付け、前記アダプター（２）の後部外周面に締結部材（３）を嵌合し、前記ホースバンド（１ａ）の締め付けで、前記ジョイント（１）の後部内周面を前記アダプター（２）の前部外周面に固定すると共に、前記ホースバンド（３ｂ）の締め付けで固定用補助材（３ａ）の径を小さくすることによって、前記アダプター（２）の後部内周側を、挿入された前記リブ管（Ｐ）の隣接する環状リブ（Ｒ）間に押し付けて固定することを特徴とする。
【０００９】
さらにまた、請求項４に記載のリブ管接続方法は、請求項１又は２に記載のリブ管用可撓継手を使用した接続方法であって、前記マンホール側壁（Ｗ）の孔（Ｈ）に、前記ジョイント（１）を取付け、前記アダプター（２）の後部外周面に締結部材（３）を嵌合した後、その一体物をリブ管（Ｐ）の先端部外周面に嵌合し、前記リブ管（Ｐ）をジョイント（１）に挿入し、前記ホースバンド（１ａ）の締め付けで、前記ジョイント（１）の後部内周面を前記アダプター（２）の前部外周面に固定すると共に、前記ホースバンド（３ｂ）の締め付けで固定用補助材（３ａ）の径を小さくすることによって、前記アダプター（２）の後部内周側を、挿入された前記リブ管（Ｐ）の隣接する環状リブ（Ｒ）間に押し付けて固定することを特徴とする。
【００１０】
なお、カッコ内の記号は、図面および後述する発明の実施の形態に記載された対応要素または対応事項を示す。
【００１１】
本発明の請求項１に記載のリブ管用可撓継手によれば、締結部材等の取付けは、専用治具を使用しないで容易に行うことができる。
従って、リブ管の接続作業を簡素化することができる。
【００１２】
また、請求項２に記載のリブ管用可撓継手によれば、請求項１に記載のリブ管用可撓継手の作用効果に加えて、固定用補助材の内周面に摩擦低減材を被覆しているので、取付け現場において、当該固定用補助材に潤滑剤を塗布する必要がない。
【００１３】
さらに、請求項３に記載のリブ管接続方法によれば、請求項１又は２に記載のリブ管用可撓継手を使用したリブ管接続方法であり、まず、マンホール側壁の孔に、ジョイントとアダプターを取付けるが、このジョイントとアダプターはあらかじめ工場で取付けておくことができるので、現場での作業を簡素化することができる。
さらに、接続のための専用治具を必要としないので、さらに作業の簡素化を図ることができる。
【００１４】
さらにまた、請求項４に記載のリブ管接続方法によれば、請求項３に記載の発明の作用効果と同様に、接続のための専用治具を必要としないので、さらに作業の簡素化を図ることができる。
【００１５】
【発明の実施の形態】
図１乃至図３を参照して、本発明の第一実施形態に係るリブ管用可撓継手、およびこの可撓継手を使用したリブ管接続方法について説明する。図１は当該可撓継手を使用したリブ管Ｐの接続方法を示す部分断面側面図である。図２はそのアダプター２を示す半断面側面図、図３はその締結部材３を示す半断面側面図である。なお従来例で示したものと同一部分には同一符合を付した。
【００１６】
本発明の第一実施形態に係るリブ管用可撓継手は、マンホールＭの側壁Ｗに穿設された孔Ｈに、フランジ状の環状リブＲが外周面に多数形成されたリブ管Ｐを接続するためのものであり、主にジョイント１、アダプター２および締結部材３で構成され、優れた耐震性を有するものである。
【００１７】
ジョイント１は、マンホール側壁Ｗに穿設した孔Ｈに、当該マンホールＭ側である前部が挿入されて取付けられるもので、その後部外周面にホースバンド１ａを嵌着し、ＥＰＤＭ等の合成ゴムで形成された円筒状である。
アダプター２は、同じくＥＰＤＭ等の合成ゴム製で円筒状の筒本体部２ａと、塩ビ製で、筒本体部２ａの前部外周面に嵌合する環状筒とで構成され、その前部がジョイント１の後部に嵌入するものである。
また、締結部材３は、固定用補助材３ａの外周面にホースバンド３ｂを巻回して構成している。この固定用補助材３ａは、アダプター２の後部外周面に嵌合し、リブ管Ｐの隣接する環状リブＲ間に嵌り込む断面が略くさび状であり、その内周面３ｃには成形の段階で摩擦低減材として樹脂塗膜を被覆している。
【００１８】
このリブ管用可撓継手を使用して、リブ管Ｐを接続するには、次のようにして行う。
（１）まず、マンホール側壁Ｗの孔Ｈに、ジョイント１とアダプター２を取付ける（図１（ａ）参照）。
この作業において、ジョイント１とアダプター２を、あらかじめ工場で取付けておくことにより、現場での作業を簡素化することができる。
（２）次に、リブ管Ｐを、ジョイント１とアダプター２との一体物内および締結部材３内を挿通させて側壁Ｗの孔Ｈに挿入する（図１（ｂ））。
（３）そして、アダプター２の後部外周面に締結部材３を嵌合する（図１（ｃ））。これにより、ホースバンド１ａの締め付けで、ジョイント１の後部内周面をアダプターの前部外周面に固定する。また、ホースバンド３ｂの締め付けで固定用補助材３ａの径を小さくして、アダプター２の後部内周側を、リブ管Ｐの隣接する環状リブＲ間に押し付けて固定する。
【００１９】
この締結部材３をアダプター２の後部外周面に嵌合する際、固定用補助材３ａの内周面３ｃにはあらかじめ摩擦低減材として樹脂被膜を被覆しているので、現場において潤滑剤を塗布することなく容易に嵌合することができる。
また、この一連の作業は全て手作業のみで行うことができ、専用治具を必要としない。従って、リブ管Ｐの接続を容易に行うことができる。
【００２０】
図４を参照して本発明の第二実施形態に係るリブ管用可撓継手と、当該可撓継手を使用したリブ管Ｐの接続方法について説明する。図４は当該可撓継手を使用したリブ管Ｐの接続方法を示す部分断面側面図である。従来例で示したものと同一部分には同一符合を付した。
【００２１】
このリブ管用可撓継手において、第一実施形態のものと異なる点は、ジョイント１の形状である。すなわち、この第二実施形態におけるジョイント１は、その口径を後部に向かって縮小させており、これによって孔Ｈの周面との間隙を広げて撓み量が大きく採れるように設定し、耐震性の向上を図っている。
【００２２】
当該第二実施形態に係るリブ管用可撓継手を使用してリブ管Ｐを接続するには、次のように方法をとることができる。
（１）まず、マンホール側壁Ｗの孔Ｈに、ジョイント１を取付ける（図４（ａ））。
（２）次に、アダプター２の後部外周面に締結部材３を嵌合する（図４（ｂ））。
（３）その後、その一体物をリブ管Ｐの先端部外周面に嵌合する（図４（ｃ））。
（４）そして、リブ管Ｐをジョイント１に挿入する。これによって、ホースバンド１ａの締め付けで、ジョイント１の後部内周面をアダプターの前部外周面に固定する。それと同時に、ホースバンド３ｂの締め付けで固定用補助材３ａの径を小さくして、アダプター２の後部内周側を、リブ管Ｐの隣接する環状リブＲ間に押し付けて固定する（図４（ｄ））。
【００２３】
この接続方法においても、固定用補助材３ａの内周面３ｃに樹脂塗膜を被覆しているので、締結部材３をアダプター２の外周面に容易に取付けることができる。また、専用治具を使用せず、全て手作業で行うことができるので、接続作業が容易である。
【００２４】
また、本発明の実施形態例では、摩擦係数低減材の例として、樹脂塗膜のみをあげているが、ウレタン塗膜やシリコーン塗膜等も同様に適用可能である。
【００２５】
【発明の効果】
本発明の請求項１に記載のリブ管用可撓継手によれば、締結部材等の取付けは、専用治具を使用しないで容易に行うことができる。
従って、リブ管の接続作業を簡素化することができる。
【００２６】
また、請求項２に記載のリブ管用可撓継手によれば、請求項１に記載のリブ管用可撓継手の作用効果に加えて、固定用補助材の内周面に摩擦低減材を被覆しているので、取付け現場において、当該固定用補助材に潤滑剤を塗布する必要がない。
【００２７】
さらに、請求項３に記載のリブ管接続方法によれば、請求項１又は２に記載のリブ管用可撓継手を使用したリブ管接続方法であり、まず、マンホール側壁の孔に、ジョイントとアダプターを取付けるが、このジョイントとアダプターはあらかじめ工場で取付けておくことができるので、現場での作業を簡素化することができる。
さらに、接続のための専用治具を必要としないので、さらに作業の簡素化を図ることができる。
【００２８】
さらにまた、請求項４に記載のリブ管接続方法によれば、請求項３に記載の発明の作用効果と同様に、接続のための専用治具を必要としないので、さらに作業の簡素化を図ることができる。
【図面の簡単な説明】
【図１】本発明の第一実施形態に係るリブ管用可撓継手を使用したリブ管の接続方法を示す部分断面側面図である。
【図２】図１に示すリブ管用可撓継手のアダプターを示す半断面側面図である。
【図３】図１に示すリブ管用可撓継手の締結部材を示す半断面側面図である。
【図４】本発明の第二実施形態に係るリブ管用可撓継手を使用したリブ管の接続方法を示す部分断面側面図である。
【図５】従来例に係るリブ管用可撓継手を使用したリブ管の接続方法を示す部分断面側面図である。
【符号の説明】
１ ジョイント
１ａ ホースバンド
２ アダプター
２ａ 筒本体部
２ｂ 環状筒
３ 締結部材
３ａ 固定用補助材
３ｂ ホースバンド
３ｃ 内周面
１０ 継手部材
１１ バンド材
１２ 環状パーツ
１３ ゴム輪
Ｐ リブ管
Ｒ 環状リブ
Ｍ マンホール
Ｗ 側壁
Ｈ 孔[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an earthquake-resistant flexible joint for attaching a ribbed pipe (hereinafter, referred to as a “rib pipe”) to a side wall of a manhole such as a sewer, and a method for connecting a rib pipe using the joint. Things.
[0002]
[Prior art]
Conventionally, there are various types of pipes used for sewerage, including so-called PVC pipes, and various joints have been developed and used to attach those pipes to the side wall of a manhole.
[0003]
Among them, there is a joint for a rib pipe P having a large number of annular ribs R on the outer peripheral surface. This joint is generally configured as shown in FIG. That is, it mainly includes a joint member 10 formed of a flexible material, an annular part 12 made of polyethylene, a rubber ring 13, and a band material 11.
First, the joint member 10 is attached to the hole H formed in the side wall W of the manhole M (FIG. 5A), and then the rib tube in which the annular part 12 is fitted to the joint member 10 is attached. P is inserted (FIG. 5 (b)). Finally, the joint member 10 is tightened with the band material 11, and the sealing performance is secured by the rubber ring 13 (FIG. 5 (c)).
[0004]
[Problems to be solved by the invention]
However, the conventional rib pipe joint has the following problems.
(1) A special jig for fitting the annular part 12 to the rib pipe P is required, and handling and work are troublesome. Therefore, the quality of the installation of the rib pipe largely depends on the work at the site, and there is a difference depending on the skill of the operator.
(2) When fitting the annular part 12 to the rib tube P, a lubricant must be applied to the rubber ring 13 at the site, so that the fitting work is troublesome.
(3) At this time, the workability is greatly affected by the amount of the lubricant to be applied. Therefore, the workability is improved by sufficiently applying the lubricant, but the cost of the lubricant increases accordingly, and it is difficult to adjust the amount of the lubricant. The work is cumbersome.
[0005]
Therefore, an object of the present invention is to provide a joint for a rib pipe which simplifies the work on site and enables the rib pipe to be connected well to the side wall of the manhole irrespective of the skill level of the operator. It is in. It is another object of the present invention to provide a method for connecting a rib tube, which can be easily installed on site by using such a joint.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, a flexible joint for a rib pipe according to claim 1 of the present invention is characterized in that a hole (H) formed in a side wall (W) of a manhole (M) is provided with a flange-shaped annular rib. (R) is a flexible joint for connecting a large number of rib tubes (P) formed on the outer peripheral surface, and a front portion on the manhole (M) side is inserted into the hole (H) and attached. And a tubular joint (1) made of an elastic material having a hose band (1a) fitted on the outer peripheral surface of the rear portion, and a highly rigid annular cylinder on the outer peripheral surface of the front portion of the cylindrical main body (2a) made of the elastic material (2b) is fitted, the front part is fitted into the rear part of the joint (1), and the adapter (2) is fitted on the outer peripheral surface of the rear part of the adapter (2), and is adjacent to the rib pipe (P). Hose bands (3a) are attached to the outer peripheral surface of the fixing auxiliary member (3a) having a substantially wedge-shaped cross section to fit between the annular ribs (R). b) and a wound fastening member (3), and the inner peripheral surface of the rear part of the joint (1) is fixed to the outer peripheral surface of the front part of the adapter (2) by tightening the hose band (1a). At the same time, by reducing the diameter of the fixing auxiliary member (3a) by tightening the hose band (3b), the rear inner peripheral side of the adapter (2) is adjacent to the inserted rib tube (P). It is characterized in that it is fixed by pressing between the annular ribs (R).
[0007]
The invention according to claim 2 is characterized in that the inner peripheral surface (3c) of the auxiliary fixing material (3a) is coated with a friction reducing material.
[0008]
Further, a rib pipe connection method according to claim 3 is a connection method using the rib joint for a rib pipe according to claim 1 or 2, wherein the hole (H) of the manhole side wall (W) is provided with The joint (1) and the adapter (2) are attached, a fastening member (3) is fitted to the outer peripheral surface of the rear part of the adapter (2), and the hose band (1a) is tightened. By fixing the peripheral surface to the front outer peripheral surface of the adapter (2) and reducing the diameter of the fixing auxiliary material (3a) by tightening the hose band (3b), the inside of the rear portion of the adapter (2) is reduced. It is characterized in that the peripheral side is pressed between adjacent annular ribs (R) of the inserted rib tube (P) and fixed.
[0009]
Furthermore, a rib pipe connection method according to claim 4 is a connection method using the rib joint according to claim 1 or 2, wherein the hole (H) in the manhole side wall (W) is After attaching the joint (1) and fitting the fastening member (3) to the outer peripheral surface of the rear part of the adapter (2), the integrated part is fitted to the outer peripheral surface of the distal end part of the rib pipe (P), The pipe (P) is inserted into the joint (1), and the inner peripheral surface of the rear part of the joint (1) is fixed to the outer peripheral surface of the front part of the adapter (2) by tightening the hose band (1a). By reducing the diameter of the fixing auxiliary member (3a) by tightening the hose band (3b), the inner peripheral side of the rear part of the adapter (2) is connected to the adjacent annular rib () of the inserted rib pipe (P). R) It is characterized by being pressed and fixed between
[0010]
Symbols in parentheses indicate corresponding elements or matters described in the drawings and the embodiments of the invention described later.
[0011]
According to the flexible joint for a rib pipe according to the first aspect of the present invention, attachment of a fastening member or the like can be easily performed without using a dedicated jig.
Therefore, the connecting operation of the rib pipes can be simplified.
[0012]
According to the flexible joint for a rib pipe of the second aspect, in addition to the function and effect of the flexible joint for a rib pipe of the first aspect, the inner peripheral surface of the auxiliary member for fixing is coated with a friction reducing material. Therefore, there is no need to apply a lubricant to the fixing auxiliary material at the installation site.
[0013]
Further, according to the rib pipe connecting method according to the third aspect, there is provided a rib pipe connecting method using the rib joint according to the first or second aspect. The joints and adapters can be pre-installed at the factory, simplifying on-site work.
Furthermore, since a special jig for connection is not required, the operation can be further simplified.
[0014]
Furthermore, according to the rib pipe connecting method of the fourth aspect, similar to the operation and effect of the third aspect of the present invention, a dedicated jig for connection is not required, so that the operation can be further simplified. Can be planned.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
With reference to FIGS. 1 to 3, a description will be given of a rib joint according to a first embodiment of the present invention, and a method of connecting a rib tube using the joint. FIG. 1 is a partial sectional side view showing a method of connecting a rib pipe P using the flexible joint. FIG. 2 is a half sectional side view showing the adapter 2, and FIG. 3 is a half sectional side view showing the fastening member 3. The same parts as those shown in the conventional example are denoted by the same reference numerals.
[0016]
In the flexible joint for a rib pipe according to the first embodiment of the present invention, a rib pipe P having a large number of flange-shaped annular ribs R formed on an outer peripheral surface thereof is connected to a hole H formed in a side wall W of a manhole M. This is mainly composed of the joint 1, the adapter 2, and the fastening member 3, and has excellent earthquake resistance.
[0017]
The joint 1 has a front portion on the side of the manhole M inserted and attached to a hole H formed in a side wall W of the manhole. A hose band 1a is fitted to an outer peripheral surface of the joint, and a synthetic rubber such as EPDM is used. And a cylindrical shape.
The adapter 2 is also composed of a cylindrical tube body 2a made of synthetic rubber such as EPDM, and an annular tube made of PVC and fitted to the front outer peripheral surface of the tube body 2a. 1 fits into the rear part.
Further, the fastening member 3 is configured by winding a hose band 3b around the outer peripheral surface of the fixing auxiliary member 3a. The fixing auxiliary member 3a is fitted to the rear outer peripheral surface of the adapter 2 and has a substantially wedge-shaped cross section to be fitted between the adjacent annular ribs R of the rib pipe P. The inner peripheral surface 3c has a molding step. Is coated with a resin coating as a friction reducing material.
[0018]
The connection of the rib pipe P using the flexible joint for a rib pipe is performed as follows.
(1) First, the joint 1 and the adapter 2 are attached to the hole H of the manhole side wall W (see FIG. 1A).
In this work, the work on site can be simplified by attaching the joint 1 and the adapter 2 in advance at the factory.
(2) Next, the rib pipe P is inserted into the hole H of the side wall W by penetrating the inside of the integrated body of the joint 1 and the adapter 2 and the inside of the fastening member 3 (FIG. 1B).
(3) Then, the fastening member 3 is fitted to the outer peripheral surface of the rear part of the adapter 2 (FIG. 1C). As a result, the rear inner peripheral surface of the joint 1 is fixed to the front outer peripheral surface of the adapter by tightening the hose band 1a. Further, the diameter of the auxiliary fixing member 3a is reduced by tightening the hose band 3b, and the rear inner peripheral side of the adapter 2 is pressed between the adjacent annular ribs R of the rib pipe P and fixed.
[0019]
When fitting the fastening member 3 to the rear outer peripheral surface of the adapter 2, the inner peripheral surface 3 c of the fixing auxiliary member 3 a is previously coated with a resin film as a friction reducing material. It can be easily fitted without using.
In addition, this series of operations can be performed manually only, and no special jig is required. Therefore, connection of the rib pipe P can be easily performed.
[0020]
With reference to FIG. 4, a description will be given of a flexible joint for a rib pipe according to the second embodiment of the present invention and a method of connecting a rib pipe P using the flexible joint. FIG. 4 is a partial cross-sectional side view showing a method of connecting the rib pipe P using the flexible joint. The same parts as those shown in the conventional example are denoted by the same reference numerals.
[0021]
This flexible joint for a rib pipe differs from that of the first embodiment in the shape of the joint 1. That is, the joint 1 according to the second embodiment has its diameter reduced toward the rear part, whereby the gap between the joint H and the peripheral surface of the hole H is set to be large so that a large amount of deflection can be obtained. We are trying to improve.
[0022]
In order to connect the rib pipe P using the flexible joint for a rib pipe according to the second embodiment, the following method can be adopted.
(1) First, the joint 1 is attached to the hole H in the side wall W of the manhole (FIG. 4A).
(2) Next, the fastening member 3 is fitted to the rear outer peripheral surface of the adapter 2 (FIG. 4B).
(3) After that, the integrated body is fitted to the outer peripheral surface of the distal end portion of the rib tube P (FIG. 4C).
(4) Then, the rib pipe P is inserted into the joint 1. As a result, the rear inner peripheral surface of the joint 1 is fixed to the front outer peripheral surface of the adapter by tightening the hose band 1a. At the same time, the diameter of the fixing auxiliary material 3a is reduced by tightening the hose band 3b, and the rear inner peripheral side of the adapter 2 is pressed and fixed between the adjacent annular ribs R of the rib pipe P (FIG. 4 (d)). )).
[0023]
Also in this connection method, since the inner peripheral surface 3c of the fixing auxiliary member 3a is coated with the resin coating, the fastening member 3 can be easily attached to the outer peripheral surface of the adapter 2. In addition, since all the operations can be performed manually without using a dedicated jig, the connection operation is easy.
[0024]
Further, in the embodiment of the present invention, only a resin coating film is given as an example of the friction coefficient reducing material, but a urethane coating film, a silicone coating film, or the like is also applicable.
[0025]
【The invention's effect】
According to the flexible joint for a rib pipe according to the first aspect of the present invention, attachment of a fastening member or the like can be easily performed without using a dedicated jig.
Therefore, the connecting operation of the rib pipes can be simplified.
[0026]
According to the flexible joint for a rib pipe of the second aspect, in addition to the function and effect of the flexible joint for a rib pipe of the first aspect, the inner peripheral surface of the auxiliary member for fixing is coated with a friction reducing material. Therefore, there is no need to apply a lubricant to the fixing auxiliary material at the installation site.
[0027]
Further, according to the rib pipe connecting method according to the third aspect, there is provided a rib pipe connecting method using the flexible coupling for a rib pipe according to the first or second aspect. The joints and adapters can be pre-installed at the factory, simplifying on-site work.
Furthermore, since a special jig for connection is not required, the operation can be further simplified.
[0028]
Furthermore, according to the rib pipe connecting method of the fourth aspect, similar to the operation and effect of the third aspect of the present invention, a dedicated jig for connection is not required, so that the operation can be further simplified. Can be planned.
[Brief description of the drawings]
FIG. 1 is a partial sectional side view showing a method for connecting a rib pipe using a flexible joint for a rib pipe according to a first embodiment of the present invention.
FIG. 2 is a half sectional side view showing an adapter of the flexible joint for a rib pipe shown in FIG. 1;
3 is a half sectional side view showing a fastening member of the flexible joint for a rib pipe shown in FIG. 1;
FIG. 4 is a partial cross-sectional side view showing a method of connecting a rib pipe using a flexible joint for a rib pipe according to a second embodiment of the present invention.
FIG. 5 is a partial cross-sectional side view showing a method for connecting a rib pipe using a rib joint according to a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Joint 1a Hose band 2 Adapter 2a Tube main body part 2b Annular tube 3 Fastening member 3a Auxiliary material 3b Hose band 3c Inner peripheral surface 10 Joint member 11 Band material 12 Annular parts 13 Rubber ring P Rib pipe R Annular rib M Manhole W Side wall H hole

Claims (4)

マンホールの側壁に穿設された孔に、フランジ状の環状リブが外周面に多数形成されたリブ管を接続するための可撓継手であって、
前記孔に、前記マンホール側である前部が挿入されて取付けられ、後部外周面にホースバンドを嵌着した弾性材製で筒状のジョイントと、
弾性材製である筒本体部の前部外周面に剛性の高い環状筒を嵌合し、前部が前記ジョイントの後部に嵌入するアダプターと、
前記アダプターの後部外周面に嵌合し、前記リブ管の隣接する環状リブ間に嵌り込む断面が略くさび状の固定用補助材の外周面にホースバンドを巻回した締結部材とで構成し、
前記ホースバンドの締め付けで、前記ジョイントの後部内周面を前記アダプターの前部外周面に固定すると共に、前記ホースバンドの締め付けで固定用補助材の径を小さくすることによって、前記アダプターの後部内周側を、挿入された前記リブ管の隣接する環状リブ間に押し付けて固定することを特徴とするリブ管用可撓継手。A flexible joint for connecting a rib pipe in which a large number of flange-shaped annular ribs are formed on an outer peripheral surface to a hole formed in a side wall of a manhole,
In the hole, the front part on the manhole side is inserted and attached, and a tubular joint made of an elastic material with a hose band fitted on the rear outer peripheral surface,
An adapter in which a high-rigidity annular cylinder is fitted to a front outer peripheral surface of a tubular body portion made of an elastic material, and a front portion is fitted into a rear portion of the joint,
A fastening member which is fitted to the rear outer peripheral surface of the adapter and has a hose band wound around the outer peripheral surface of a fixing auxiliary member having a substantially wedge-shaped cross section to be fitted between adjacent annular ribs of the rib pipe;
By tightening the hose band, the rear inner peripheral surface of the joint is fixed to the front outer peripheral surface of the adapter, and by reducing the diameter of the fixing auxiliary material by tightening the hose band, the rear inner surface of the adapter is fixed. A flexible joint for a rib tube, wherein a circumferential side is pressed between adjacent annular ribs of the inserted rib tube and fixed. 前記固定用補助材の内周面に摩擦低減材を被覆したことを特徴とする請求項１に記載のリブ管用可撓継手。The flexible joint for a rib pipe according to claim 1, wherein the inner peripheral surface of the fixing auxiliary member is coated with a friction reducing material. 請求項１又は２に記載のリブ管用可撓継手を使用したリブ管の接続方法であって、
前記マンホール側壁の孔に、前記ジョイントとアダプターを取付け、
前記アダプターの後部外周面に締結部材を嵌合し、
前記ホースバンドの締め付けで、前記ジョイントの後部内周面を前記アダプターの前部外周面に固定すると共に、
前記ホースバンドの締め付けで固定用補助材の径を小さくすることによって、前記アダプターの後部内周側を、挿入された前記リブ管の隣接する環状リブ間に押し付けて固定することを特徴とするリブ管接続方法。A method for connecting a rib pipe using the flexible joint for a rib pipe according to claim 1 or 2,
Attach the joint and adapter to the hole in the manhole side wall,
Fit a fastening member to the rear outer peripheral surface of the adapter,
By tightening the hose band, the rear inner peripheral surface of the joint is fixed to the front outer peripheral surface of the adapter,
By reducing the diameter of the auxiliary fixing member by tightening the hose band, the rear inner peripheral side of the adapter is pressed and fixed between adjacent annular ribs of the inserted rib tube, and the rib is fixed. Pipe connection method. 請求項１又は２に記載のリブ管用可撓継手を使用したリブ管の接続方法であって、
前記マンホール側壁の孔に、前記ジョイントを取付け、
前記アダプターの後部外周面に締結部材を嵌合した後、その一体物をリブ管の先端部外周面に嵌合し、
前記リブ管をジョイントに挿入し、
前記ホースバンドの締め付けで、前記ジョイントの後部内周面を前記アダプターの前部外周面に固定すると共に、
前記ホースバンドの締め付けで固定用補助材の径を小さくすることによって、前記アダプターの後部内周側を、挿入された前記リブ管の隣接する環状リブ間に押し付けて固定することを特徴とするリブ管接続方法。A method for connecting a rib pipe using the flexible joint for a rib pipe according to claim 1 or 2,
Attach the joint to the hole in the manhole side wall,
After fitting the fastening member to the rear outer peripheral surface of the adapter, the integral body is fitted to the distal outer peripheral surface of the rib tube,
Insert the rib tube into the joint,
By tightening the hose band, the rear inner peripheral surface of the joint is fixed to the front outer peripheral surface of the adapter,
By reducing the diameter of the auxiliary fixing member by tightening the hose band, the rear inner peripheral side of the adapter is pressed and fixed between adjacent annular ribs of the inserted rib tube, and the rib is fixed. Pipe connection method.
JP2003134992A 2003-05-13 2003-05-13 Flexible joint for rib tube Expired - Fee Related JP4319462B2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007113360A (en) * 2005-10-24 2007-05-10 Ito Yogyo Co Ltd Joint device for manhole and method of connecting ribbed pipe
JP2014095415A (en) * 2012-11-08 2014-05-22 Mitsubishi Heavy Ind Ltd Structure and method for sealing through hole

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007113360A (en) * 2005-10-24 2007-05-10 Ito Yogyo Co Ltd Joint device for manhole and method of connecting ribbed pipe
JP4663478B2 (en) * 2005-10-24 2011-04-06 株式会社イトーヨーギョー Manhole joint device and ribbed tube connection structure
JP2014095415A (en) * 2012-11-08 2014-05-22 Mitsubishi Heavy Ind Ltd Structure and method for sealing through hole

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