JP5256447B2 - Joining structure and joining method of different types of tubes - Google Patents

Joining structure and joining method of different types of tubes Download PDF

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JP5256447B2
JP5256447B2 JP2009022551A JP2009022551A JP5256447B2 JP 5256447 B2 JP5256447 B2 JP 5256447B2 JP 2009022551 A JP2009022551 A JP 2009022551A JP 2009022551 A JP2009022551 A JP 2009022551A JP 5256447 B2 JP5256447 B2 JP 5256447B2
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synthetic resin
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公彦 佐々木
伸介 片岡
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西武ポリマ化成株式会社
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Description

この発明は異種管の接合構造および接合方法に関し、農業用水路や下水道管路などに使用されるポリエチレン管などの合成樹脂管と可撓管を含む金属管とを止水性および抜け出し強度を高めて接合できるようにしたものである。   The present invention relates to a joining structure and joining method for different types of pipes, and joins a synthetic resin pipe such as a polyethylene pipe used for agricultural waterways and sewer pipes and a metal pipe including a flexible pipe with improved water-stopping and pull-out strength. It is something that can be done.

最近の農業用水路や下水道管路などに使用される管種に合成樹脂管があり、例えばポリエチレン管が使用されているが、ポリエチレン管は材料特性により、金属管などの各種材料の管と接着性が悪く、異種管との接合方法も確立されておらず、可撓管との接合も含めて十分な接合方法がなかった。   Synthetic resin pipes are used as pipe types used in recent agricultural waterways and sewer pipes. For example, polyethylene pipes are used. Polyethylene pipes have adhesive properties with pipes of various materials such as metal pipes due to their material properties. However, a joining method with a different kind of tube has not been established, and there has been no sufficient joining method including joining with a flexible tube.

特に、土圧などの外圧が加わる場合には、ポリエチレン管の管剛性が低く容易に変形し、接合部に生じる隙間から漏水などが生じる可能性があった。   In particular, when an external pressure such as earth pressure is applied, there is a possibility that the pipe rigidity of the polyethylene pipe is low and easily deformed, and water leakage or the like may occur from a gap generated at the joint.

これまでの一般的なポリエチレン管と金属管との接合は、例えば図7に示すように、金属管1の端部に鋼製の受口(ソケット)2を設けておき、数箇所に木材などの芯だし用のくさび3を挟んで芯あわせをしながらポリエチレン管4を受口2に挿入し、ポリエチレン管4の外周面と受口2との隙間部5にモルタルや樹脂モルタル6をコーキングして止水と抜け出しを防止して接合するようにしている。   For example, as shown in FIG. 7, for example, a conventional polyethylene pipe and a metal pipe are joined to each other by providing a steel socket (socket) 2 at the end of the metal pipe 1, and wood or the like at several places. The polyethylene tube 4 is inserted into the receiving port 2 while aligning the core 3 with the wedge 3 for centering, and mortar or resin mortar 6 is caulked in the gap 5 between the outer peripheral surface of the polyethylene tube 4 and the receiving port 2. This prevents the water from stopping and coming out and joins it.

また、比較的小径のポリエチレン管と金属管の接続方法として、特許文献1には、金属管の端部に設けた受口に合成樹脂管の端部を嵌挿するとともに、受口と対応する合成樹脂管の端部内周面に金属製スリーブをセットし、金属製スリーブを拡径具で拡径して外周側に膨張させて合成樹脂管の端部外周を受口の内周面に設けた凹凸に食い込ませて接続するようにし、金属製スリーブに形成したつばを合成樹脂管の端面に予め係止することでスリーブの移動を防止して確実に接続できるようにしたものが開示されている。   In addition, as a method for connecting a relatively small diameter polyethylene pipe and a metal pipe, in Patent Document 1, an end portion of a synthetic resin pipe is fitted into a receptacle provided at an end portion of the metal pipe, and corresponds to the receptacle. Set the metal sleeve on the inner peripheral surface of the end of the synthetic resin tube, expand the diameter of the metal sleeve with the diameter expander and expand it to the outer peripheral side, and provide the outer periphery of the end of the synthetic resin tube on the inner peripheral surface of the receiving port It is disclosed that the connection is made by biting into the unevenness, and the collar formed on the metal sleeve is locked to the end surface of the synthetic resin tube in advance so that the sleeve can be prevented from moving and securely connected. Yes.

特開平7−9574号公報Japanese Unexamined Patent Publication No. 7-9574

ところが、鋼製の受口にポリエチレン管を挿入し、ポリエチレン管の外周面と受口との隙間部にモルタルや樹脂モルタルを充填固化する接続方法では、モルタルや樹脂モルタルとポリエチレン管とが接着せず、接着力不足による漏水や地震などの外力による抜けが生じるという問題があり、鋼製の受口との間でもモルタルや樹脂モルタルの接着強度はあまり期待できず同様の問題が生じている。   However, in a connection method in which a polyethylene pipe is inserted into a steel receiving port and mortar or resin mortar is filled and solidified in the gap between the outer peripheral surface of the polyethylene tube and the receiving port, the mortar, resin mortar and polyethylene tube are bonded. However, there is a problem that leakage due to water leakage due to insufficient adhesive force or an external force such as an earthquake occurs, and the adhesive strength of mortar and resin mortar cannot be expected so much between steel receptacles, and the same problem occurs.

また、鋼製の受口にポリエチレン管を挿入する場合に木材などの芯だし用のくさびを挟むようにているが、管の挿入に伴ってくさびが移動して芯合せに手間取るなど作業性が悪いという問題がある。
さらに、鋼製の受口の隙間部にモルタルコーキングをする場合に、コーキング材料の充填量の管理が難しく、作業者の経験と勘によるため充填不足が生じて漏水する恐れがある。
In addition, when inserting a polyethylene pipe into a steel socket, a wedge for coreing such as wood is sandwiched. However, the wedge moves as the pipe is inserted, making it easier to align the center. There is a problem of being bad.
Furthermore, when mortar coking is performed in the gap portion of the steel receiving port, it is difficult to manage the filling amount of the caulking material, and there is a risk of leakage due to insufficient filling due to the experience and intuition of the operator.

また、金属スリーブを拡径具で膨張させて凹凸に食い込ませる接続方法では、拡径できる小口径の合成樹脂管に適用できるに過ぎず、大口径の合成樹脂管に適用することができないという問題がある。   In addition, the connection method in which the metal sleeve is inflated with a diameter expanding tool and bites into the unevenness can only be applied to a synthetic resin pipe having a small diameter that can be expanded, and cannot be applied to a synthetic resin pipe having a large diameter. There is.

この発明は、かかる従来技術の問題に鑑みてなされたものであって、ポリエチレン管などの合成樹脂管と可撓管を含む金属管とを止水性および抜け出し強度を高めて接合することができる異種管の接合構造および接合方法を提供しようとするものである。   The present invention has been made in view of the problems of the prior art, and is a heterogeneous material capable of joining a synthetic resin tube such as a polyethylene tube and a metal tube including a flexible tube with improved water-stopping and pull-out strength. It is an object of the present invention to provide a pipe joining structure and a joining method.

上記課題を解決するためこの発明の請求項1記載の異種管の接合構造は、金属管の端部に設けられて合成樹脂管の端部を嵌挿する受口部と、この受口部の端部内周に数箇所設けられる芯だし兼用軸力受部材と、前記受口部の内周面に取り付けられるブチルゴムまたは水膨張ゴムによる止水部材と、前記受口部と受口部に嵌挿された合成樹脂管との隙間部に充填固化されるコーキング材とからなることを特徴とするものである。   In order to solve the above-described problem, the dissimilar tube joining structure according to claim 1 of the present invention is provided with a receiving portion provided at an end portion of the metal tube and fitted with an end portion of the synthetic resin tube, and the receiving portion. Centering and axial force receiving members provided at several locations on the inner periphery of the end, a water-stopping member made of butyl rubber or water expansion rubber attached to the inner peripheral surface of the receiving portion, and inserted into the receiving portion and the receiving portion And a caulking material that is filled and solidified in a gap with the synthetic resin pipe.

また、この発明の請求項2記載の異種管の接合構造は、請求項1記載の構成に加え、前記合成樹脂管には、受口部への嵌挿端部外周に接着剤を塗布しその表面に砂を散布した砂巻部を形成してなることを特徴とするものである。   Further, the heterogeneous pipe joining structure according to claim 2 of the present invention, in addition to the structure according to claim 1, is that the synthetic resin pipe is coated with an adhesive on the outer periphery of the fitting insertion end to the receiving port. It is characterized by forming a sand winding part in which sand is dispersed on the surface.

さらに、この発明の請求項3記載の異種管の接合構造は、請求項1または2記載の構成に加え、前記合成樹脂管には、受口部への嵌挿先端面を平坦面にする合成樹脂コーキングを設けてなることを特徴とするものである。   Furthermore, the heterogeneous tube joining structure according to claim 3 of the present invention, in addition to the structure according to claim 1 or 2, is provided in the synthetic resin tube in which the fitting insertion end surface to the receiving portion is a flat surface. Resin coking is provided.

また、この発明の請求項4記載の異種管の接合構造は、請求項1〜3のいずれかに記載の構成に加え、前記合成樹脂管には、受口部への嵌挿先端部外周に、ブチルゴムまたは水膨張ゴムによる止水部材を取り付けてなることを特徴とするものである。   In addition to the structure according to any one of claims 1 to 3, the joint structure of the different types of pipes according to claim 4 of the present invention is provided on the outer periphery of the distal end of the insertion insertion section into the receiving section. A water stop member made of butyl rubber or water expansion rubber is attached.

さらに、この発明の請求項5記載の異種管の接合構造は、請求項1〜4のいずれかに記載の構成に加え、前記合成樹脂管には、受口部への嵌挿先端部内周と金属管の内周との接合部に止水用シートを跨るように設けてなることを特徴とするものである。   Furthermore, in addition to the structure in any one of Claims 1-4, the joint structure of the dissimilar pipe of Claim 5 of this invention has the inner periphery of the insertion insertion front-end | tip part to a receiving part in the said synthetic resin pipe | tube. It is characterized by being provided so as to straddle the water stop sheet at the joint with the inner periphery of the metal tube.

また、この発明の請求項6記載の異種管の接合構造は、請求項1〜5のいずれかに記載の構成に加え、前記合成樹脂管には、当該合成樹脂管が嵌挿される受口部を備えた金属管を介して可撓管を接合してなることを特徴とするものである。   Moreover, in addition to the structure in any one of Claims 1-5, the joint structure of the dissimilar pipe of Claim 6 of this invention adds to the synthetic resin pipe the receptacle part by which the said synthetic resin pipe is inserted. A flexible tube is joined through a metal tube provided with the above.

さらに、この発明の請求項7記載の異種管の接合構造は、請求項6記載の構成に加え、前記可撓管の端部に、金属製の前記受口部を形成して前記合成樹脂管と接合してなることを特徴とするものである。   Further, the dissimilar pipe joining structure according to claim 7 of the present invention is the synthetic resin pipe, in addition to the structure according to claim 6, the metal receiving part is formed at the end of the flexible pipe. It is characterized by being joined to.

また、この発明の請求項8記載の異種管の接合方法は、金属管の端部に合成樹脂管の端部を嵌挿する受口部を形成し、この受口部の端部内周に数箇所芯だし兼用軸力受部材を溶接固定するとともに、この受口部の内周面にブチルゴムまたは水膨張ゴムによる止水部材を取り付けたのち、この受口部に合成樹脂管の端部を嵌挿し、受口部と合成樹脂管との隙間部にコーキング材を充填固化させて接合するようにしたことを特徴とするものである。   According to the eighth aspect of the present invention, there is provided a method for joining different types of pipes, wherein a receiving port portion into which the end portion of the synthetic resin tube is fitted is formed at the end portion of the metal tube, and the inner periphery of the end portion of the receiving port portion is several. The axial force receiving member serving as the centering center is welded and fixed, and a water stop member made of butyl rubber or water expansion rubber is attached to the inner peripheral surface of the receiving portion, and then the end of the synthetic resin tube is fitted into the receiving portion. The caulking material is filled and solidified into the gap between the receiving port and the synthetic resin tube, and is joined.

さらに、この発明の請求項9記載の異種管の接合方法は、請求項8記載の構成に加え、前記合成樹脂管には、受口部への嵌挿端部外周に接着剤を塗布した後その表面に砂を散布するようにしたことを特徴とするものである。   Furthermore, in the ninth aspect of the present invention, in addition to the configuration of the eighth aspect, in addition to the configuration of the eighth aspect, the synthetic resin tube is formed by applying an adhesive to the outer periphery of the insertion end portion into the receiving portion. It is characterized in that sand is scattered on the surface.

また、この発明の請求項10記載の異種管の接合方法は、請求項8または9記載の構成に加え、前記合成樹脂管には、受口部への嵌挿先端面を予め合成樹脂コーキングにより平坦面とするようにしたことを特徴とするものである。   According to a tenth aspect of the present invention, in addition to the structure according to the eighth or ninth aspect, the synthetic resin pipe has a fitting insertion tip face to the receiving portion previously formed by synthetic resin caulking. It is characterized by having a flat surface.

さらに、この発明の請求項11記載の異種管の接合方法は、請求項8〜10のいずれかに記載の構成に加え、前記合成樹脂管には、受口部への嵌挿先端部外周に、ブチルゴムまたは水膨張ゴムによる止水部材を取り付けるようにしたことを特徴とするものである。   Further, in the eleventh aspect of the present invention, in addition to the structure according to any one of the eighth to tenth aspects, the synthetic resin pipe has an outer periphery of a distal end of the insertion insertion portion. Further, a water stop member made of butyl rubber or water expansion rubber is attached.

また、この発明の請求項12記載の異種管の接合方法は、請求項8〜11のいずれかに記載の構成に加え、前記合成樹脂管には、受口部への嵌挿先端部内周と金属管の内周との接合部に跨るように止水用シートを設けるようにしたことを特徴とするものである。   According to a twelfth aspect of the present invention, in addition to the structure according to any one of the eighth to eleventh aspects, the synthetic resin pipe includes an inner periphery of a distal end of the insertion insertion portion into the receiving portion. A water stop sheet is provided so as to straddle the joint with the inner periphery of the metal tube.

さらに、この発明の請求項13記載の異種管の接合方法は、請求項8〜12のいずれかに記載の構成に加え、前記合成樹脂管には、当該合成樹脂管が嵌挿される受口部を備えた金属管を介して可撓管を接合するようにしたことを特徴とするものである。   Furthermore, the joining method of the dissimilar pipe | tube of Claim 13 of this invention adds to the structure in any one of Claims 8-12, The receiving part by which the said synthetic resin pipe is inserted by the said synthetic resin pipe | tube The flexible tube is joined through a metal tube provided with the above.

また、この発明の請求項14記載の異種管の接合方法は、請求項13記載の構成に加え、前記可撓管の端部に、金属製の前記受口部を形成して前記合成樹脂管と接合するようにしたことを特徴とするものである。   According to a fourteenth aspect of the present invention, in addition to the structure according to the thirteenth aspect, the synthetic resin pipe is formed by forming the metal receiving port at the end of the flexible pipe. It is characterized by the fact that it is joined.

この発明の請求項1記載の異種管の接合構造によれば、金属管の端部に設けられて合成樹脂管の端部を嵌挿する受口部と、この受口部の端部内周に数箇所固定される芯だし兼用軸力受部材と、前記受口部の内周面に取り付けられるブチルゴムまたは水膨張ゴムによる止水部材と、前記受口部と受口部に嵌挿された合成樹脂管との隙間部に充填固化されるコーキング材とからなるので、受口部の内周に固定した芯だし兼用軸力受部材によって合成樹脂管を挿入する場合の移動を防止して短時間に作業性良く芯出して接合することができる。また、受口部の内周面に取り付けたブチルゴムまたは水膨張ゴムによる止水部材を、受口部と合成樹脂管との隙間部に充填固化されたコーキング材と化学反応により完全密着させることができ、止水性の確保および接着強度の向上を図ることができる。さらに、隙間部に充填固化したコーキング材の抜け出しを芯だし兼用軸力受部材で抑えることができ、抜け出し強度や接合強度を高めることができる。   According to the joining structure of the different types of pipes according to the first aspect of the present invention, the receiving portion provided at the end portion of the metal tube and fitted with the end portion of the synthetic resin tube, and the inner periphery of the end portion of the receiving portion. A centering and axial force receiving member fixed at several locations, a water-stopping member made of butyl rubber or water-expanded rubber attached to the inner peripheral surface of the receiving portion, and a synthetic fitting inserted into the receiving portion and the receiving portion Because it consists of a caulking material that is filled and solidified in the gap with the resin pipe, it prevents the movement when inserting the synthetic resin pipe by the axial centering force receiving member fixed to the inner periphery of the receiving port for a short time Can be centered and joined with good workability. In addition, a water-stopping member made of butyl rubber or water-expanded rubber attached to the inner peripheral surface of the receiving port can be completely adhered by a chemical reaction with the caulking material filled and solidified in the gap between the receiving port and the synthetic resin tube. It is possible to secure water-stopping and improve adhesive strength. Furthermore, the caulking material filled and solidified in the gap can be prevented from being pulled out by the centering and dual-use axial force receiving member, and the pulling out strength and bonding strength can be increased.

また、この発明の請求項2記載の異種管の接合構造によれば、前記合成樹脂管には、受口部への嵌挿端部外周に接着剤を塗布しその表面に砂を散布した砂巻部を形成したので、砂巻部によって合成樹脂管と隙間部に充填固化されたコーキング材との接着力を一層向上することができ、止水性を一層高めることもできる。   According to the dissimilar pipe joining structure according to claim 2 of the present invention, the synthetic resin pipe is coated with an adhesive on the outer periphery of the fitting insertion end to the receiving port and sand is applied to the surface thereof. Since the winding portion is formed, the adhesive force between the synthetic resin pipe and the caulking material filled and solidified in the gap portion by the sand winding portion can be further improved, and the water stoppage can be further increased.

さらに、この発明の請求項3記載の異種管の接合構造によれば、前記合成樹脂管には、受口部への嵌挿先端面を平坦面にする合成樹脂コーキングを設けたので、合成樹脂管の先端面がスパイラル状などであっても合成樹脂コーキングによって平坦面にすることで、先端面により生じる隙間を無くすことができ、隙間部に充填固化されるコーキング材を空洞を生じることなく完全に充填することができ、止水性や接合強度を高めることができる。   Further, according to the heterogeneous pipe joining structure according to claim 3 of the present invention, the synthetic resin pipe is provided with the synthetic resin caulking for flattening the front end face to be inserted into the receiving portion. Even if the tube tip surface is spiral, etc., it is possible to eliminate the gap caused by the tip surface by using synthetic resin caulking, and the caulking material filled and solidified in the gap portion can be completely formed without causing a cavity. It is possible to increase the water-stopping property and bonding strength.

また、この発明の請求項4記載の異種管の接合構造によれば、前記合成樹脂管には、受口部への嵌挿先端部外周に、ブチルゴムまたは水膨張ゴムによる止水部材を取り付けたので、受口部の内周面の止水部材と協働して合成樹脂管の外周でも隙間部に充填固化されるコーキング材との接着性を一層高めることができ、止水性や接合強度を高めることができる。   Further, according to the joint structure of different types of pipes according to claim 4 of the present invention, a water stop member made of butyl rubber or water-expanded rubber is attached to the synthetic resin pipe on the outer periphery of the insertion insertion tip to the receiving port. Therefore, in cooperation with the water-stopping member on the inner peripheral surface of the receiving port, it is possible to further improve the adhesiveness with the caulking material that is filled and solidified in the gap even at the outer periphery of the synthetic resin pipe, and the water-stopping and bonding strength are improved. Can be increased.

さらに、この発明の請求項5記載の異種管の接合構造によれば、前記合成樹脂管には、受口部への嵌挿先端部内周と金属管の内周との接合部に止水用シートを跨るように設けたので、地震などの地盤変動による外力が所定以上に加わった場合に隙間部に充填固化されたコーキング材が損傷することがあっても、止水用シートの柔軟性によって止水性を確保することができ、信頼性を大幅に向上することができる。   Further, according to the joint structure of different types of pipes according to claim 5 of the present invention, the synthetic resin pipe has a water stopping function at the joint portion between the inner periphery of the insertion insertion tip into the receiving port and the inner periphery of the metal tube. Since it is provided so as to straddle the sheet, even if the external force due to ground deformation such as an earthquake is applied more than a predetermined amount, even if the caulking material filled and solidified in the gap portion may be damaged, the flexibility of the water-stop sheet The water stopping property can be ensured, and the reliability can be greatly improved.

また、この発明の請求項6記載の異種管の接合構造によれば、前記合成樹脂管には、当該合成樹脂管が嵌挿される受口部を備えた金属管を介して可撓管を接合したので、受口部を備えた金属管を介することで合成樹脂管に可撓管を接合することができ、地震などの地盤変動による外力が所定以上に加わった場合でも可撓管によって外力を吸収することができ、止水性や抜け出し強度を一層高めることができる。   According to the heterogeneous tube joining structure according to claim 6 of the present invention, a flexible tube is joined to the synthetic resin tube through a metal tube having a receiving portion into which the synthetic resin tube is fitted. Therefore, the flexible tube can be joined to the synthetic resin tube through the metal tube provided with the receiving portion, and even when an external force due to ground fluctuation such as an earthquake is applied more than a predetermined value, the flexible tube can apply the external force. It can be absorbed, and the water-stopping and pull-out strength can be further enhanced.

さらに、この発明の請求項7記載の異種管の接合構造によれば、前記可撓管の端部に、金属製の前記受口部を形成して前記合成樹脂管と接合したので、可撓管に一体形成した金属製の受口部によって合成樹脂管と可撓管とを直接接合することができ、これによっても地震などの地盤変動による外力が所定以上に加わった場合でも可撓管によって外力を吸収して止水性や抜け出し強度を一層高めることができる。   Furthermore, according to the joint structure of different types of pipes according to claim 7 of the present invention, the metal receiving port is formed at the end of the flexible pipe and joined to the synthetic resin pipe. The synthetic resin tube and the flexible tube can be directly joined by a metal receiving part integrally formed on the tube, and even if an external force due to ground fluctuation such as an earthquake is applied more than a predetermined amount, Absorbing external force can further enhance water-stopping and pull-out strength.

また、この発明の請求項8記載の異種管の接合方法によれば、金属管の端部に合成樹脂管の端部を嵌挿する受口部を形成し、この受口部の端部内周に数箇所芯だし兼用軸力受部材を溶接固定するとともに、この受口部の内周面にブチルゴムまたは水膨張ゴムによる止水部材を取り付けたのち、この受口部に合成樹脂管の端部を嵌挿し、受口部と合成樹脂管との隙間部にコーキング材を充填固化させて接合するようにしたので、受口部の内周に固定した芯だし兼用軸力受部材によって合成樹脂管を挿入する場合の移動を防止して短時間に作業性良く芯出して接合することができる。また、受口部の内周面に取り付けたブチルゴムまたは水膨張ゴムによる止水部材を、受口部と合成樹脂管との隙間部に充填固化されたコーキング材と化学反応により完全密着させることができ、止水性の確保および接着強度の向上を図ることができる。さらに、隙間部に充填固化したコーキング材の抜け出しを芯だし兼用軸力受部材で抑えることができ、抜け出し強度や接合強度を高めることができる。   According to the dissimilar pipe joining method according to claim 8 of the present invention, a receiving part for inserting and inserting the end of the synthetic resin pipe into the end of the metal pipe is formed, and the inner periphery of the end of the receiving part is formed. After fixing and fixing the axial force receiving member for several cores at the same position, and attaching a water-stopping member made of butyl rubber or water expansion rubber to the inner peripheral surface of this receiving portion, the end of the synthetic resin pipe is attached to this receiving portion. Since the caulking material is filled and solidified into the gap between the receiving part and the synthetic resin pipe, the synthetic resin pipe is fixed by the axial centering force receiving member fixed to the inner periphery of the receiving part. Therefore, it is possible to prevent the movement when inserting the wire and to center and bond it with good workability in a short time. In addition, a water-stopping member made of butyl rubber or water-expanded rubber attached to the inner peripheral surface of the receiving port can be completely adhered by a chemical reaction with the caulking material filled and solidified in the gap between the receiving port and the synthetic resin tube. It is possible to secure water-stopping and improve adhesive strength. Furthermore, the caulking material filled and solidified in the gap can be prevented from being pulled out by the centering and dual-use axial force receiving member, and the pulling out strength and bonding strength can be increased.

さらに、この発明の請求項9記載の異種管の接合方法によれば、前記合成樹脂管には、受口部への嵌挿端部外周に接着剤を塗布した後その表面に砂を散布するようにしたので、砂巻部によって合成樹脂管と隙間部に充填固化されたコーキング材との接着力を一層向上することができ、止水性を一層高めることもできる。   Further, according to the method for joining different types of pipes according to claim 9 of the present invention, the synthetic resin pipe is coated with an adhesive on the outer periphery of the fitting insertion end to the receiving port, and then sand is spread on the surface thereof. Since it was made to do so, the adhesive force of the synthetic resin pipe | tube and the caulking material with which the clearance gap part was filled and solidified by the sand roll part can be improved further, and a water stop can be raised further.

また、この発明の請求項10記載の異種管の接合方法によれば、前記合成樹脂管には、受口部への嵌挿先端面を予め合成樹脂コーキングにより平坦面とするようにしたので、合成樹脂管の先端面がスパイラル状などであっても合成樹脂コーキングによって平坦面にすることで、先端面により生じる隙間を無くすことができ、隙間部に充填固化されるコーキング材を空洞を生じることなく完全に充填することができ、止水性や接合強度を高めることができる。   Further, according to the method for joining different types of pipes according to claim 10 of the present invention, the synthetic resin pipe is preliminarily made flat by synthetic resin caulking at the insertion end surface to the receiving portion. Even if the tip surface of the synthetic resin tube is spiral, etc., by making it flat by synthetic resin caulking, the gap caused by the tip surface can be eliminated, and the caulking material that fills and solidifies the gap part creates a cavity Can be completely filled, and the water-stopping and bonding strength can be increased.

さらに、この発明の請求項11記載の異種管の接合方法によれば、前記合成樹脂管には、受口部への嵌挿先端部外周に、ブチルゴムまたは水膨張ゴムによる止水部材を取り付けるようにしたので、受口部の内周面の止水部材と協働して合成樹脂管の外周でも隙間部に充填固化されるコーキング材との接着性を一層高めることができ、止水性や接合強度を高めることができる。   Further, according to the method for joining different types of pipes according to claim 11 of the present invention, a water stop member made of butyl rubber or water-expanded rubber is attached to the synthetic resin pipe on the outer periphery of the insertion insertion tip to the receiving port. As a result, the adhesiveness with the caulking material that is filled and solidified in the gap even at the outer periphery of the synthetic resin tube in cooperation with the water-stopping member on the inner peripheral surface of the receiving port can be further improved. Strength can be increased.

また、この発明の請求項12記載の異種管の接合方法によれば、前記合成樹脂管には、受口部への嵌挿先端部内周と金属管の内周との接合部に跨るように止水用シートを設けるようにしたので、地震などの地盤変動による外力が所定以上に加わった場合に隙間部に充填固化されたコーキング材が損傷することがあっても止水用シートの柔軟性によって止水性を確保することができ、信頼性を大幅に向上することができる。   Further, according to the method for joining different types of pipes according to claim 12 of the present invention, the synthetic resin pipe spans the joint portion between the inner periphery of the insertion tip portion into the receiving portion and the inner periphery of the metal tube. Since the water-stop sheet is provided, the flexibility of the water-stop sheet can be achieved even if the caulking material filled and solidified in the gap is damaged when an external force due to ground deformation such as an earthquake is applied beyond a predetermined level. Therefore, the water stoppage can be ensured and the reliability can be greatly improved.

さらに、この発明の請求項13記載の異種管の接合方法によれば、前記合成樹脂管には、当該合成樹脂管が嵌挿される受口部を備えた金属管を介して可撓管を接合するようにしたので、受口部を備えた金属管を介することで合成樹脂管に可撓管を接合することができ、地震などの地盤変動による外力が所定以上に加わった場合でも可撓管によって外力を吸収することができ、止水性や抜け出し強度を一層高めることができる。   Furthermore, according to the method for joining dissimilar pipes according to claim 13 of the present invention, a flexible pipe is joined to the synthetic resin pipe via a metal pipe having a receiving portion into which the synthetic resin pipe is fitted. As a result, the flexible tube can be joined to the synthetic resin tube via the metal tube having the receiving portion, and the flexible tube can be applied even when an external force due to ground fluctuation such as an earthquake is applied more than a predetermined amount. Can absorb external force, and can further improve water-stopping and pull-out strength.

また、この発明の請求項14記載の異種管の接合方法によれば、前記可撓管の端部に、金属製の前記受口部を形成して前記合成樹脂管と接合するようにしたので、可撓管に一体形成した金属製の受口部によって合成樹脂管と可撓管とを直接接合することができ、これによっても地震などの地盤変動による外力が所定以上に加わった場合でも可撓管によって外力を吸収して止水性や抜け出し強度を一層高めることができる。   According to the dissimilar pipe joining method of the fourteenth aspect of the present invention, since the metal receiving part is formed at the end of the flexible pipe and joined to the synthetic resin pipe. The synthetic resin tube and the flexible tube can be directly joined by the metal receiving part integrally formed with the flexible tube, and this is possible even when an external force due to ground fluctuation such as an earthquake is applied more than a predetermined amount. External force can be absorbed by the flexible tube to further increase the water stoppage and pull-out strength.

この発明の異種管の接合構造および接合方法の一実施の形態にかかり、(a)は接合前の部分縦断面図、(b)は接合状態の部分縦断面図、(C)は(b)図のA矢視図である。1A is a partial longitudinal sectional view before joining, FIG. 2B is a partial longitudinal sectional view in a joined state, and FIG. It is A arrow view of a figure. この発明の異種管の接合構造および接合方法の他の一実施の形態にかかる接合状態の部分縦断面図である。It is a partial longitudinal cross-sectional view of the joining state concerning other embodiment of the joining structure of the dissimilar pipe | tube of this invention, and the joining method. この発明の異種管の接合構造および接合方法のさらに他の一実施の形態にかかる接合状態の部分縦断面図である。It is a partial longitudinal cross-sectional view of the joining state concerning further another embodiment of the joining structure and joining method of a dissimilar pipe | tube of this invention. この発明の異種管の接合構造および接合方法の一実施の形態を適用した可撓管との接続例にかかる接合状態の部分断面図である。It is a fragmentary sectional view of the joining state concerning the example of a connection with the flexible tube to which one Embodiment of the joining structure and joining method of the dissimilar tube of this invention is applied. この発明の異種管の接合構造および接合方法の一実施の形態を適用した可撓管との他の接続例にかかる接合状態の部分断面図である。It is a fragmentary sectional view of the joining state concerning other examples of connection with a flexible tube to which one embodiment of a joining structure and joining method of different kinds of pipes of this invention is applied. この発明の異種管の接合構造および接合方法の一実施の形態を適用した可撓管とのさらに他の接続例にかかる接合状態の部分断面図である。It is a fragmentary sectional view of the joined state concerning other examples of connection with a flexible tube to which one embodiment of the joining structure and joining method of different types of pipes of this invention is applied. 従来の異種管の接合構造および接合方法にかかる接合状態の部分断面図およびA矢視図である。It is the fragmentary sectional view of the joining state concerning the joining structure and joining method of the conventional dissimilar pipe, and A arrow directional view.

以下、この発明の実施の形態について、図面に基づき詳細に説明する。
この異種管の接合構造および接合方法では、農業用水路や下水道管路などに使用される比較的大口径の合成樹脂管、たとえば内径が500mm程度ポリエチレン管と、可撓管を含む金属管とを止水性および抜け出し強度を高めて接合できるとともに、作業性にも優れるようにしたものである。
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
In this dissimilar pipe joining structure and joining method, a relatively large diameter synthetic resin pipe, such as a polyethylene pipe having an inner diameter of about 500 mm, and a metal pipe including a flexible pipe are used for agricultural waterways and sewer pipes. In addition to being able to be joined with increased aqueous and pull-out strength, workability is also improved.

この異種管の接続構造10では、金属管11の端部に合成樹脂管12の端部を嵌挿する受口部13が形成され、金属管11は内径が接合される合成樹脂管12の内径と略同一の内径のものが用いられ、接合後に段差が生じないようにする。   In this dissimilar tube connection structure 10, a receiving port portion 13 into which the end portion of the synthetic resin tube 12 is fitted is formed at the end portion of the metal tube 11, and the inner diameter of the synthetic resin tube 12 to which the inner diameter of the metal tube 11 is joined. And having the same inner diameter are used so that no step is formed after joining.

この金属管11の端部に形成される受口部13は合成樹脂管12の外径に対してかなり大きい内径(例えば、直径で80mm程度大きい)の金属製の円筒体14を、リング状の金属板15を介して溶接することで2段円筒状に形成され、金属管11の受口部13と反対の端部には、フランジ16が溶接されて他の配管が接続できるようにしてある。   The receiving portion 13 formed at the end of the metal tube 11 is made of a ring-shaped metal cylinder 14 having a considerably larger inner diameter (for example, about 80 mm in diameter) than the outer diameter of the synthetic resin tube 12. It is formed into a two-stage cylindrical shape by welding through a metal plate 15, and a flange 16 is welded to the end opposite to the receiving port 13 of the metal tube 11 so that other pipes can be connected. .

この金属管11の受口部13の円筒体14は、その長さが合成樹脂管12の接合に必要な長さに対応する長さとされ、例えば100mm程度とする。なお、金属管11の長さは、フランジ16を介して他の配管を接続したり、受口部13の内周側からの作業に支障のない長さであれば良く、配管の一部と兼用して長くすることもできる。   The cylindrical body 14 of the receiving portion 13 of the metal tube 11 has a length corresponding to a length necessary for joining the synthetic resin tube 12, and is about 100 mm, for example. The length of the metal pipe 11 may be a length that does not hinder other pipes connected via the flange 16 or work from the inner peripheral side of the receiving port 13. You can also lengthen it.

また、この金属管11の受口部13の開放端側の端部内周には、合成樹脂管12を金属管11に芯だし状態で接合できるよう芯だし兼用軸力受部材17が円周複数箇所に溶接固定してあり、図示例では、円周等間隔に4個の芯だし兼用軸力受部材17が配置され、例えば金属製丸棒を受口部13の端部の僅かに内側から1/4の深さ程度までの長さとされ、溶接してある。   In addition, on the inner periphery of the end of the metal tube 11 on the open end side of the receiving portion 13, there are a plurality of centering and axial force receiving members 17 that can be joined to the metal tube 11 in a centered state. In the illustrated example, four centering and axial force receiving members 17 are arranged at equal intervals around the circumference. For example, a metal round bar is attached slightly from the inside of the end of the receiving portion 13. The length is about 1/4 of the depth and is welded.

そして、この金属管11の受口部13の芯だし兼用軸力受部材17より奥側の受口部13の内周面には、ブチルゴムまたは水膨張ゴムによる止水部材18が全面に接着して取り付けてあり、接合作業開始までは、離型紙が貼られ、異物が接着しないようにしてある。   A water-stop member 18 made of butyl rubber or water-expanded rubber is adhered to the entire inner peripheral surface of the receiving port 13 on the inner side of the centering / shaft force receiving member 17 of the receiving port 13 of the metal tube 11. Until the start of the joining operation, release paper is stuck to prevent foreign matter from adhering.

一方、金属管11の受口部13に嵌挿される合成樹脂管12には、接合強度の向上を図るため、受口部13への嵌挿端部外周に接着剤を塗布し、接着剤の表面に砂を散布した砂巻部19を形成してある。   On the other hand, in order to improve the bonding strength of the synthetic resin tube 12 inserted into the receiving portion 13 of the metal tube 11, an adhesive is applied to the outer periphery of the insertion insertion end portion to the receiving portion 13, and the adhesive A sand roll 19 is formed by spreading sand on the surface.

また、合成樹脂管12には、必要に応じて、受口部13への嵌挿先端面を平坦面にするための合成樹脂コーキング20が施してあり、例えばポリエチレン管のようにスパイラル構造のため先端面が斜めになっていてもこれを軸方向に垂直な平坦面にしてリング状の金属板15に密着できるようにエポキシ樹脂によるコーキングが施してある。   Further, the synthetic resin tube 12 is provided with a synthetic resin caulking 20 for making the insertion and insertion tip surface into the receiving portion 13 a flat surface as necessary. For example, the synthetic resin tube 12 has a spiral structure like a polyethylene tube. Even if the front end surface is slanted, caulking with an epoxy resin is applied so that it can be brought into close contact with the ring-shaped metal plate 15 as a flat surface perpendicular to the axial direction.

このような金属管11と合成樹脂管12との接合は、受口部13が付いた金属管11を管路の所定位置に設置固定し、受口部13の内周面に貼り付けてある止水部材18の離型紙を剥がす。なお、この金属管11には、他端部のフランジ16に他の配管が接続されている場合もある。   In such joining of the metal pipe 11 and the synthetic resin pipe 12, the metal pipe 11 with the receiving port portion 13 is installed and fixed at a predetermined position of the pipe and is attached to the inner peripheral surface of the receiving port portion 13. The release paper of the water stop member 18 is peeled off. In addition, other pipes may be connected to the flange 16 at the other end of the metal pipe 11.

こののち、合成樹脂管12の嵌挿先端部外周に砂巻部19を形成するとともに、合成樹脂コーキング20により先端を平坦面とした合成樹脂管12を芯だし兼用軸力受部材17をガイドとして芯だしをしながら受口部13に挿入し、先端面をリング状の金属板15に押し当てるようにする。   After that, a sand roll 19 is formed on the outer periphery of the insertion end of the synthetic resin tube 12, and the synthetic resin tube 12 whose tip is flattened by the synthetic resin caulking 20 is used as a guide with the combined axial force receiving member 17 as a guide. It is inserted into the receiving portion 13 while centering, and the tip surface is pressed against the ring-shaped metal plate 15.

この状態を保持しておき、合成樹脂管12の外周面と金属管11の受口部13の内周面との隙間部21に無収縮モルタルや樹脂モルタルなどのコーキング22を施すとともに、芯だし兼用軸力受部材17の外側までコーキング22を施し、硬化養生をする。   While maintaining this state, a coking 22 such as a non-shrink mortar or a resin mortar is applied to the gap portion 21 between the outer peripheral surface of the synthetic resin tube 12 and the inner peripheral surface of the receiving portion 13 of the metal tube 11, and a centering is performed. The caulking 22 is applied to the outside of the dual-purpose axial force receiving member 17 and cured.

さらに、ここでは、合成樹脂管12には、受口部13への嵌挿先端部内周と金属管11の内周との接合部の全周に止水用シート23を跨るように設け、接着剤で貼り付けてあり、合成樹脂コーキング20の表面を覆うようにしてある。   Further, here, the synthetic resin pipe 12 is provided so as to straddle the water-stop sheet 23 over the entire circumference of the joint portion between the inner periphery of the insertion insertion tip into the receiving portion 13 and the inner periphery of the metal tube 11. The surface of the synthetic resin coking 20 is covered with an agent.

このような異種管の接合構造10および接合方法によれば、金属管11の端部に設けられて合成樹脂管12の端部を嵌挿する受口部13と、この受口部13の端部内周に数箇所固定される芯だし兼用軸力受部材17と、受口部13の内周面に取り付けられるブチルゴムまたは水膨張ゴムによる止水部材18と、受口部13と受口部13に嵌挿された合成樹脂管12との隙間部21に充填固化される無収縮モルタルや樹脂モルタルなどのコーキング材22とからなるので、受口部13の内周に固定した芯だし兼用軸力受部材17によって合成樹脂管12を挿入する場合の移動を防止して短時間に作業性良く芯出して接合することができる。また、受口部13の内周面に取り付けたブチルゴムまたは水膨張ゴムによる止水部材18を、金属管11と合成樹脂管12との隙間部21に充填固化されたコーキング材22と化学反応により完全密着させることができ、止水性の確保および接着強度の向上を図ることができる。さらに、隙間部21に充填固化したコーキング材22の抜け出しを芯だし兼用軸力受部材17で抑えることができ、抜け出し強度や接合強度を高めることができる。   According to the joining structure 10 and joining method of the different kinds of pipes, the receiving portion 13 provided at the end portion of the metal tube 11 and into which the end portion of the synthetic resin tube 12 is inserted, and the end of the receiving portion 13 Centering and axial force receiving member 17 fixed at several locations on the inner periphery, water-stopping member 18 made of butyl rubber or water expansion rubber attached to the inner peripheral surface of receiving port 13, receiving port 13 and receiving port 13 And a caulking material 22 such as a non-shrink mortar or a resin mortar that is filled and solidified in the gap 21 between the synthetic resin tube 12 inserted and inserted into the core, and the axial force combined with the core fixed to the inner periphery of the receiving portion 13 When the synthetic resin pipe 12 is inserted by the receiving member 17, the movement can be prevented and the work can be centered and joined in a short time with good workability. Further, the water stop member 18 made of butyl rubber or water expansion rubber attached to the inner peripheral surface of the receiving portion 13 is filled with the caulking material 22 filled in the gap portion 21 between the metal tube 11 and the synthetic resin tube 12 by a chemical reaction. It is possible to achieve complete adhesion, ensuring water-stopping and improving adhesive strength. Furthermore, the caulking material 22 filled and solidified in the gap portion 21 can be prevented from being pulled out by the centering / combined axial force receiving member 17, and the withdrawal strength and bonding strength can be increased.

また、この異種管の接合構造10および接合方法によれば、合成樹脂管12には、受口部13への嵌挿端部外周に接着剤を塗布しその表面に砂を散布した砂巻部19を形成したので、砂巻部19によって合成樹脂管12と隙間部21に充填固化された無収縮モルタルなどのコーキング材22との接着力を一層向上することができ、止水性を一層高めることもできる。   Further, according to the dissimilar pipe joining structure 10 and the joining method, the synthetic resin pipe 12 is coated with an adhesive on the outer periphery of the fitting insertion end to the receiving port 13 and sand is spread on the surface thereof. 19 is formed, the adhesive force between the synthetic resin pipe 12 and the caulking material 22 such as non-shrink mortar filled and solidified in the gap 21 by the sand roll 19 can be further improved, and the water-stopping property is further increased. You can also.

さらに、この異種管の接合構造10および接合方法によれば、合成樹脂管12には、受口部13への嵌挿先端面を平坦面にするエポキシ樹脂などによる合成樹脂コーキング20を設けたので、合成樹脂管12の先端面がスパイラル状などであっても合成樹脂コーキング20によって平坦面にすることで、先端面により生じる隙間を無くすことができ、隙間部21に充填固化されるコーキング材22を空洞を生じることなく完全に充填することができ、止水性や接合強度を高めることができる。   Furthermore, according to this dissimilar pipe joining structure 10 and joining method, the synthetic resin pipe 12 is provided with the synthetic resin caulking 20 made of epoxy resin or the like that flattens the insertion insertion end face into the receiving port 13. Even if the distal end surface of the synthetic resin tube 12 is spiral or the like, a gap formed by the distal end surface can be eliminated by making the surface flat with the synthetic resin caulking 20, and the caulking material 22 filled and solidified in the gap portion 21. Can be completely filled without forming a cavity, and water-stopping and bonding strength can be increased.

さらに、この異種管の接合構造10および接合方法によれば、合成樹脂管12には、受口部13への嵌挿先端部内周と金属管12の内周との接合部に柔軟性を備えた特殊ゴムシートからなる止水用シート23を跨るように設けたので、地震などの地盤変動による外力が所定以上に加わった場合に隙間部21に充填固化されたコーキング材22が損傷することがあっても、止水用シート23の柔軟性によって止水性を確保することができ、信頼性を大幅に向上することができる。   Furthermore, according to the joining structure 10 and joining method of the different types of pipes, the synthetic resin pipe 12 is provided with flexibility at the joint portion between the inner periphery of the insertion insertion tip portion into the receiving portion 13 and the inner periphery of the metal tube 12. In addition, the caulking material 22 filled and solidified in the gap 21 may be damaged when an external force due to ground fluctuation such as an earthquake is applied beyond a predetermined level. Even if it exists, the water stop property can be secured by the flexibility of the water stop sheet 23, and the reliability can be greatly improved.

なお、柔軟性を備えた止水用シート23は、接着剤を使用し、ローラーなどで圧着しながら貼り付けるようにすれば良く、例えば、止水用シートの片面は加硫ゴムで反対側の面は未加硫ゴムで粘着性の優れた特殊ゴムシートを使用している。
また、片面接着のできる軟質の合成樹脂シートを使用する場合もある。
In addition, the water-stop sheet 23 having flexibility may be attached using an adhesive while being pressure-bonded with a roller or the like. For example, one side of the water-stop sheet is vulcanized rubber and the other side is attached. The surface uses unvulcanized rubber and a special rubber sheet with excellent adhesion.
In some cases, a soft synthetic resin sheet that can be bonded on one side is used.

また、金属管11の受口部13の内周と合成樹脂管12の外周との隙間部21に充填固化されるコーキング材22との接着性を一層高めるため、図3に示すように、予め合成樹脂管12の受口部13への嵌挿先端部外周に、砂巻部19の一部を覆うようにブチルゴムまたは水膨張ゴムによる止水部材24を全周に取り付けることで、コーキング材22と合成樹脂管12との接着性を更に高めることができ、止水部材18と協働して一層止水性や接合強度を高めることができる。   In order to further enhance the adhesion between the inner periphery of the receiving portion 13 of the metal tube 11 and the outer periphery of the synthetic resin tube 12 and the caulking material 22 filled and solidified, as shown in FIG. The caulking material 22 is attached to the outer periphery of the insertion insertion portion 13 of the synthetic resin tube 12 on the outer periphery by attaching a water stop member 24 made of butyl rubber or water-expanded rubber to the entire periphery so as to cover a part of the sand roll 19. And the synthetic resin tube 12 can be further improved, and the water stoppage and the bonding strength can be further increased in cooperation with the water stop member 18.

次に、このような異種管の接合構造10および接合方法を適用した可撓管との接続例について説明する。
農業用水路や下水道管路において、例えば図4に示すように、貯水槽の管路壁30から可撓管31を介してポリエチレン管等の合成樹脂管12に接続する場合、この接続例では、管路壁30に金属管32が取り付けられ、この金属管32の端部にフランジ33が設けてあることから、このフランジ33を介して可撓管31および合成樹脂管12を接合する。
Next, an example of connection with a flexible tube to which such a heterogeneous tube bonding structure 10 and a bonding method are applied will be described.
In an agricultural waterway or a sewer pipe, for example, as shown in FIG. 4, when connecting to a synthetic resin pipe 12 such as a polyethylene pipe from a pipe wall 30 of a water storage tank through a flexible pipe 31, Since the metal tube 32 is attached to the road wall 30 and the flange 33 is provided at the end of the metal tube 32, the flexible tube 31 and the synthetic resin tube 12 are joined via the flange 33.

そこで、ここでは、可撓管31として、その両端部にフランジ34,34を設けたものを用意し、管路壁30側では、金属管32のフランジ33と可撓管31の一端のフランジ34とをフランジ接合する一方、可撓管31の他方のフランジ34には、すでに説明した異種管の接合構造10および接合方法に用いる受口部13を備えた金属管11のフランジ16をフランジ接合する。   Therefore, here, a flexible tube 31 having flanges 34, 34 provided at both ends thereof is prepared. On the side of the conduit wall 30, the flange 33 of the metal tube 32 and the flange 34 at one end of the flexible tube 31 are prepared. The flange 16 of the metal tube 11 having the receiving portion 13 used for the joint structure 10 and the joining method of the different kind of pipe already described is flange joined to the other flange 34 of the flexible tube 31. .

そして、この金属管11の受口部13に合成樹脂管12をすでに説明したように接合することで、管路壁30に取り付けられた金属管32のフランジ33に、可撓管31および合成樹脂管12を接続して管路を構成することができる。   Then, by joining the synthetic resin pipe 12 to the receiving portion 13 of the metal pipe 11 as described above, the flexible pipe 31 and the synthetic resin are connected to the flange 33 of the metal pipe 32 attached to the pipe wall 30. The pipe 12 can be connected to form a pipe line.

また、他の接続例としては、図5に示すように、可撓管31の一端に直接受口部13を一体に形成したものであっても良く、可撓管31のフランジ34と金属管11の受口部13のフランジ16とのフランジ接合を省略でき、接合箇所の減少により漏洩の可能性を低くできるとともに、作業工数を減らすことができる。   As another connection example, as shown in FIG. 5, the receiving portion 13 may be integrally formed directly at one end of the flexible tube 31, and the flange 34 of the flexible tube 31 and the metal tube 11 and the flange 16 of the receiving part 13 can be omitted, and the possibility of leakage can be reduced by reducing the number of joints, and the number of work steps can be reduced.

さらに、可撓管に一体形成した金属製の受口部13によって合成樹脂管12と可撓管31とを直接接合することで、地震などの地盤変動による外力が所定以上に加わった場合でも可撓管31によって外力を吸収して止水性や抜け出し強度を一層高めることができる。   Furthermore, by directly joining the synthetic resin tube 12 and the flexible tube 31 with the metal receiving portion 13 integrally formed with the flexible tube, even when an external force due to ground fluctuation such as an earthquake is applied beyond a predetermined level, it is possible. External force can be absorbed by the flexible tube 31 to further increase the water-stopping and pull-out strength.

さらに、他の接続例としては、図6に示すように、合成樹脂管36が外周に砂巻部37が形成され、貯水槽などの管路壁30にモルタルコーキング38を介して取り付けられており、この合成樹脂管36に可撓管31を介して合成樹脂管12と接続する必要がある場合がある。   Furthermore, as another connection example, as shown in FIG. 6, a synthetic resin pipe 36 is formed with a sand winding part 37 on the outer periphery, and is attached to a pipe wall 30 such as a water storage tank through a mortar coking 38. In some cases, it is necessary to connect the synthetic resin pipe 36 to the synthetic resin pipe 12 via the flexible pipe 31.

この場合には、管路壁30の合成樹脂管36に、すでに説明した受口部13を備えた金属管11を接合し、金属管11のフランジ16に可撓管31の一方のフランジ34をフランジ接合する。そして、可撓管31の他方のフランジ34にすでに説明した受口部13を備えた金属管11のフランジ16をフランジ接合することで、この受口部13を介して合成樹脂管12を、すでに説明した接合構造および接合方法で接合する。   In this case, the metal pipe 11 having the receiving port 13 described above is joined to the synthetic resin pipe 36 of the pipe wall 30, and one flange 34 of the flexible pipe 31 is attached to the flange 16 of the metal pipe 11. Join the flange. Then, the flange 16 of the metal pipe 11 having the receiving portion 13 already described is flange-joined to the other flange 34 of the flexible tube 31, so that the synthetic resin pipe 12 has already been connected via the receiving portion 13. It joins by the junction structure and joining method which were demonstrated.

これにより、管路壁30の合成樹脂管36と水路の合成樹脂管12との間に可撓管31を接続することができ、地震などの地盤変動による外力が所定以上に加わった場合でも可撓管31によって外力を吸収することができ、止水性や抜け出し強度を一層高めることができる。   As a result, the flexible pipe 31 can be connected between the synthetic resin pipe 36 of the pipe wall 30 and the synthetic resin pipe 12 of the water channel, and even when an external force due to ground fluctuation such as an earthquake is applied more than a predetermined value. External force can be absorbed by the flexible tube 31, and the water stoppage and pull-out strength can be further increased.

10 異種管の接合構造
11 金属管
12 合成樹脂管
13 受口部
14 円筒体
15 金属板
16 フランジ
17 芯だし兼用軸力受部材
18 止水部材
19 砂巻部
20 合成樹脂コーキング
21 隙間部
22 コーキング
23 止水用シート(特殊ゴムシート)
24 止水部材
30 管路壁
31 可撓管
32 金属管
33 フランジ
34 フランジ
36 合成樹脂管
37 砂巻部
38 モルタルコーキング
DESCRIPTION OF SYMBOLS 10 Joint structure of different pipe | tube 11 Metal pipe 12 Synthetic resin pipe 13 Receiving part 14 Cylindrical body 15 Metal plate 16 Flange 17 Centering and axial force receiving member 18 Water stop member 19 Sand winding part 20 Synthetic resin coking 21 Gap part 22 Coking 23 Water stop sheet (special rubber sheet)
24 Water stop member 30 Pipe wall 31 Flexible pipe 32 Metal pipe 33 Flange 34 Flange 36 Synthetic resin pipe 37 Sand winding part 38 Mortar coking

Claims (14)

金属管の端部に設けられて合成樹脂管の端部を嵌挿する受口部と、この受口部の端部内周に数箇所設けられる芯だし兼用軸力受部材と、前記受口部の内周面に取り付けられるブチルゴムまたは水膨張ゴムによる止水部材と、前記受口部と受口部に嵌挿された合成樹脂管との隙間部に充填固化されるコーキング材とからなることを特徴とする異種管の接合構造。   A receiving portion that is provided at the end of the metal tube and is fitted into the end portion of the synthetic resin tube, a centering and axial force receiving member that is provided at several locations on the inner periphery of the end of the receiving portion, and the receiving portion A water-stopping member made of butyl rubber or water-expanded rubber attached to the inner peripheral surface, and a caulking material filled and solidified in a gap portion between the receiving portion and the synthetic resin pipe fitted into the receiving portion. Characteristic heterogeneous tube joint structure. 前記合成樹脂管には、受口部への嵌挿端部外周に接着剤を塗布しその表面に砂を散布した砂巻部を形成してなることを特徴とする請求項1記載の異種管の接合構造。   2. The heterogeneous pipe according to claim 1, wherein the synthetic resin pipe is formed with a sand winding part in which an adhesive is applied to an outer periphery of an insertion end part to the receiving part and sand is dispersed on the surface thereof. Bonding structure. 前記合成樹脂管には、受口部への嵌挿先端面を平坦面にする合成樹脂コーキングを設けてなることを特徴とする請求項1または2記載の異種管の接合構造。   The joint structure of different types of pipes according to claim 1 or 2, wherein the synthetic resin pipe is provided with a synthetic resin caulking in which a front end face to be inserted into the receiving portion is flat. 前記合成樹脂管には、受口部への嵌挿先端部外周に、ブチルゴムまたは水膨張ゴムによる止水部材を取り付けてなることを特徴とする請求項1〜3のいずれかに記載の異種管の接合構造。   The heterogeneous pipe according to any one of claims 1 to 3, wherein a water-stopping member made of butyl rubber or water-expanded rubber is attached to the synthetic resin pipe on the outer periphery of the insertion insertion tip into the receiving port. Bonding structure. 前記合成樹脂管には、受口部への嵌挿先端部内周と金属管の内周との接合部に止水用シートを跨るように設けてなることを特徴とする請求項1〜4のいずれかに記載の異種管の接合構造。   The synthetic resin pipe is provided so as to straddle a water stop sheet at a joint portion between the inner periphery of the insertion insertion tip into the receiving portion and the inner periphery of the metal tube. The joint structure of different types of pipes according to any one of the above. 前記合成樹脂管には、当該合成樹脂管が嵌挿される受口部を備えた金属管を介して可撓管を接合してなることを特徴とする請求項1〜5のいずれかに記載の異種管の接合構造。   The flexible pipe is joined to the synthetic resin pipe through a metal pipe having a receiving portion into which the synthetic resin pipe is inserted. Joint structure of dissimilar tubes. 前記可撓管の端部に、金属製の前記受口部を形成して前記合成樹脂管と接合してなることを特徴とする請求項6記載の異種管の接合構造。   7. The dissimilar pipe joining structure according to claim 6, wherein the metal receiving port is formed at an end of the flexible pipe and joined to the synthetic resin pipe. 金属管の端部に合成樹脂管の端部を嵌挿する受口部を形成し、この受口部の端部内周に数箇所芯だし兼用軸力受部材を溶接固定するとともに、この受口部の内周面にブチルゴムまたは水膨張ゴムによる止水部材を取り付けたのち、この受口部に合成樹脂管の端部を嵌挿し、受口部と合成樹脂管との隙間部にコーキング材を充填固化させて接合するようにしたことを特徴とする異種管の接合方法。   A receiving portion for inserting the end portion of the synthetic resin tube into the end portion of the metal tube is formed, and several centering and axial force receiving members are welded and fixed to the inner periphery of the end portion of the receiving portion. After attaching a water stop member made of butyl rubber or water expansion rubber to the inner peripheral surface of the part, insert the end of the synthetic resin tube into this receiving part, and put the caulking material in the gap part between the receiving part and the synthetic resin pipe A method for joining dissimilar tubes, characterized by filling and solidifying and joining. 前記合成樹脂管には、受口部への嵌挿端部外周に接着剤を塗布した後その表面に砂を散布するようにしたことを特徴とする請求項8記載の異種管の接合方法。   9. The method of joining different types of pipes according to claim 8, wherein the synthetic resin pipe is coated with an adhesive on the outer periphery of the fitting insertion end to the receiving part and then sand is spread on the surface thereof. 前記合成樹脂管には、受口部への嵌挿先端面を予め合成樹脂コーキングにより平坦面とするようにしたことを特徴とする請求項8または9記載の異種管の接合方法。   The method for joining different types of pipes according to claim 8 or 9, wherein the synthetic resin pipe has a flat end surface inserted into the receiving portion by synthetic resin caulking in advance. 前記合成樹脂管には、受口部への嵌挿先端部外周に、ブチルゴムまたは水膨張ゴムによる止水部材を取り付けるようにしたことを特徴とする請求項8〜10のいずれかに記載の異種管の接合方法。   The heterogeneous member according to any one of claims 8 to 10, wherein a water-stopping member made of butyl rubber or water-expanded rubber is attached to the outer periphery of the insertion-insertion end of the synthetic resin tube. Pipe joining method. 前記合成樹脂管には、受口部への嵌挿先端部内周と金属管の内周との接合部に跨るように止水用シートを設けるようにしたことを特徴とする請求項8〜11のいずれかに記載の異種管の接合方法。   The water stop sheet is provided on the synthetic resin pipe so as to straddle the joint portion between the inner periphery of the insertion insertion tip into the receiving portion and the inner periphery of the metal tube. The method for joining different kinds of tubes according to any one of the above. 前記合成樹脂管には、当該合成樹脂管が嵌挿される受口部を備えた金属管を介して可撓管を接合するようにしたことを特徴とする請求項8〜12のいずれかに記載の異種管の接合方法。   The flexible pipe is joined to the synthetic resin pipe via a metal pipe having a receiving portion into which the synthetic resin pipe is inserted. Of joining different types of tubes. 前記可撓管の端部に、金属製の前記受口部を形成して前記合成樹脂管と接合するようにしたことを特徴とする請求項13記載の異種管の接合方法。   14. The method for joining different types of pipes according to claim 13, wherein the metal receiving part is formed at an end of the flexible pipe to join the synthetic resin pipe.
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