JP2005106129A

JP2005106129A - Joint for repair

Info

Publication number: JP2005106129A
Application number: JP2003338111A
Authority: JP
Inventors: Kenzo Nishitani; 憲三西谷; Yoshishige Akeboshi; 良重明星; Etsuo Masuda; 悦雄増田
Original assignee: Kubota Corp
Current assignee: Kubota Corp
Priority date: 2003-09-29
Filing date: 2003-09-29
Publication date: 2005-04-21

Abstract

<P>PROBLEM TO BE SOLVED: To provide a joint 10 for repair capable of adjusting angles of a third socket 48 and changing angles of the joint 10 by changing angles of the joint 10 with a bending portion 46 and by rotating a spherical adaptor 52 in a bulging portion 50, and joining them by changing angles of the joint 10 even though difference of bending angles for an existing pipe line 56, in which repair portion is cut, at an upstream side and an existing pipe line 58 at a downstream side is a designated angle or over. <P>SOLUTION: The joint 10 for repair comprises a pipe joint 12 including a first short pipe 14, a rubber ring joint 28 including a second short pipe 32 a flexible joint 42 including a spherical shell-shaped bulging portion 50 and the bending portion 46. The joint 10 is formed by connecting the mentioned components in order. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

この発明は、補修用継手に関し、特にたとえば、下水道に使用される陶管やコンクリート管の老朽や破損などを補修する補修用継手に関する。 The present invention relates to a repair joint, and more particularly, to a repair joint that repairs, for example, aging or breakage of ceramic pipes and concrete pipes used in sewers.

本件出願人はこの種の補修用継手を提案している（特願２００３−２６６２４号）。この補修用継手は第１接続継手および第２接続継手からなり、それらの継手はそれぞれ第１短管部および第２短管部を有し、ゴム輪接合される。そして、補修用継手の両端である、第１接続継手および第２接続継手のそれぞれ一端に第１受口および第２受口が形成される。 The present applicant has proposed this type of repair joint (Japanese Patent Application No. 2003-26624). This repair joint includes a first connection joint and a second connection joint, and each of the joints has a first short pipe portion and a second short pipe portion, and is rubber-bonded. And a 1st receiving port and a 2nd receiving port are formed in each end of the 1st connection joint and the 2nd connection joint which are the both ends of the repair joint.

既設管路の破損部分などを切断して除去し、その既設管路の切断端部に補修用継手の第１受口を嵌めて、ゴム輪接合により補修用継手を伸ばして第２受口をもう一方の既設管路の切断端部に嵌め、既設管路を接続する。 The damaged part of the existing pipe line is cut and removed, the first receiving port of the repair joint is fitted to the cut end of the existing pipe line, the repair joint is extended by rubber ring bonding, and the second receiving port is opened. Fit into the cut end of the other existing pipe and connect the existing pipe.

提案している補修用従来技術では、第１接続継手および第２接続継手はゴム輪接合により伸縮して、主に曲がっていない既設管路の補修をする。仮に、曲がっている既設管路を斜め切りして切断面間を直線で結ぶようにすると、この補修用継手により接続することができるが、その既設管路の角度差は２０度までである。このため、公共ますと下水本管とを繋ぐ取り付け管など、切断した既設管路の上流側と下流側との間に角度差が２０度以上ある場合、提案した補修用継手では切断面間を接続することができない。 In the proposed prior art for repair, the first connection joint and the second connection joint expand and contract by rubber ring bonding, and repair the existing pipe line that is not bent mainly. If the existing pipe line that is bent is cut obliquely and the cut surfaces are connected with a straight line, it can be connected by this repair joint, but the angle difference of the existing pipe line is up to 20 degrees. For this reason, when there is an angle difference of 20 degrees or more between the upstream side and the downstream side of the cut existing pipe line, such as a mounting pipe that connects the public sewage main pipe, the proposed repair joint has a gap between the cut faces. I can't connect.

さらに、既設管路の角度差が２０度を超える場合の中でも、切断した既設管路の上流側と下流側との間の垂直落差が大きいほど、補修継手で接合しにくい。 Furthermore, even when the angle difference between the existing pipe lines exceeds 20 degrees, the larger the vertical drop between the upstream side and the downstream side of the cut existing pipe line, the harder it is to join with the repair joint.

それゆえに、この発明の主たる目的は、切断した上流側既設管路の管軸芯と下流側既設管路の管軸芯との角度差が大きい場合でもそれらを接続することができる、補修用継手を提供することである。 Therefore, the main object of the present invention is to provide a repair joint capable of connecting even when the angle difference between the cut pipe axis of the upstream existing pipe line and the pipe axis of the downstream existing pipe line is large. Is to provide.

請求項１の発明は、陶管やヒューム管等の端部を受容するための受口を両端に設け、受口の間を３つの継手で連結した補修用継手であって、３つの継手の内少なくともゴム輪継手および可撓継手を含む補修用継手である。 The invention according to claim 1 is a repair joint in which a receiving port for receiving an end portion of a ceramic pipe or a fume pipe is provided at both ends, and the receiving port is connected by three joints. It is a repair joint including at least a rubber ring joint and a flexible joint.

請求項１の発明では、ゴム輪継手により補修用継手の長さを伸縮させ、可撓継手により補修用継手の角度を変化させることにより、補修箇所を切断した既設管路の両端部に補修用継手の受口を嵌めて、既設管路を接合することができる。 In the first aspect of the present invention, the length of the repair joint is expanded and contracted by the rubber ring joint, and the angle of the repair joint is changed by the flexible joint, so that the repair pipe is repaired at both ends of the existing pipeline. The existing pipe line can be joined by fitting the joint opening.

請求項２の発明は、請求項１に従属し、３つの継手が、一端に陶管やヒューム管等の端部を受容するための第１受口を形成し、他端に第１差口を形成する管継手、一端に第１差口を受容するゴム輪受口を形成し、他端に第２差口を形成するゴム輪継手、および一端に第２差口を受容する第２受口を形成し、他端に陶管やヒューム管等の端部を受容するための第３受口を形成する可撓継手である補修用継手である。 The invention of claim 2 is dependent on claim 1, and the three joints form a first receiving port for receiving an end of a ceramic tube, a fume tube or the like at one end and a first differential port at the other end. A rubber joint that forms a rubber ring receiving port that receives the first port at one end and a second ring that forms the second port at the other end, and a second port that receives the second port at the one end. It is a repair joint which is a flexible joint that forms a mouth and forms a third receiving port for receiving an end of a ceramic tube, a fume tube, or the like at the other end.

請求項２の発明では、管継手の第１差口をゴム輪継手のゴム輪受口に挿入し、ゴム輪継手の第２差口を可撓継手の第２受口に挿入することにより、管継手、ゴム輪継手および可撓継手を順番に連結して補修用継手を構成する。この補修用継手の両端である、管継手および可撓継手の一端にそれぞれ第１受口および第３受口を形成する。 In the invention of claim 2, by inserting the first differential port of the pipe joint into the rubber ring receiving port of the rubber ring joint, and inserting the second differential port of the rubber ring joint into the second receiving port of the flexible joint, A pipe joint, a rubber ring joint, and a flexible joint are connected in order to form a repair joint. A first receiving port and a third receiving port are formed at one end of the pipe joint and the flexible joint, which are both ends of the repair joint.

既設管路を補修するに際して、まず既設管路の補修箇所を切断して除去する。この切断された既設管路の下流側端部に、たとえば、可撓継手の第３受口を嵌めて、可撓継手で角度を調整しながら、ゴム輪接合された管継手を上方にスライドさせて補修用継手を伸ばす。そして、管継手の第１受口を既設管路の上流側端部に嵌めて、既設管路を接続する。 When repairing an existing pipeline, the repaired portion of the existing pipeline is first cut and removed. For example, the third receiving port of the flexible joint is fitted to the downstream end of the cut existing pipe, and the pipe joint joined with the rubber ring is slid upward while adjusting the angle with the flexible joint. Extend the repair joint. And the 1st receiving port of a pipe joint is fitted in the upstream edge part of an existing pipe line, and an existing pipe line is connected.

請求項３の発明は、請求項１に従属し、３つの継手が、一端に陶管やヒューム管等の端部を受容するための第１受口を形成し、他端に第１差口を形成する管継手、一端に第１差口を受容する第２受口を形成し、他端に第３差口を形成する可撓継手、および一端に第３差口を受容するゴム輪受口を形成し、他端に陶管やヒューム管等の端部を受容するための第４受口を形成するゴム輪継手である補修用継手である。 The invention of claim 3 is dependent on claim 1, and the three joints form a first receiving port for receiving an end of a ceramic tube, a fume tube or the like at one end, and a first insertion port at the other end. A pipe joint that forms a first joint at one end, a flexible joint that forms a third joint at the other end, and a rubber ring socket that accepts a third joint at one end It is a repair joint which is a rubber ring joint which forms a mouth and forms a fourth receiving port for receiving an end portion of a ceramic tube or a fume tube at the other end.

請求項３の発明では、管継手の第１差口を可撓継手の第２受口に挿入し、可撓継手の第３差口をゴム輪継手のゴム輪受口に挿入することにより、管継手、可撓継手およびゴム輪継手を順番に連結して補修用継手を構成する。この補修用継手の両端である、管継手およびゴム輪継手の一端にそれぞれ第１受口および第４受口を形成する。 In the invention of claim 3, by inserting the first insertion port of the pipe joint into the second receiving port of the flexible joint, and inserting the third insertion port of the flexible joint into the rubber ring receiving port of the rubber ring joint, A pipe joint, a flexible joint, and a rubber ring joint are connected in order to form a repair joint. A first receiving port and a fourth receiving port are formed at one end of a pipe joint and a rubber ring joint, which are both ends of the repair joint.

この補修用継手を用いて補修箇所を切断した既設管路を接合する際、たとえば、下流側端部にゴム輪継手の第４受口を嵌めて、ゴム輪接合された可撓継手を上方にスライドさせて補修用継手を伸ばしながら、可撓継手で角度を調整する。そして、管継手の第１受口を既設管路の上流側端部に嵌めて、既設管路を接続する。 When joining an existing pipe line that has been cut at a repaired location using this repair joint, for example, the fourth receiving port of the rubber ring joint is fitted to the downstream end, and the flexible joint joined to the rubber ring is moved upward. Adjust the angle with the flexible joint while sliding and extending the repair joint. And the 1st receiving port of a pipe joint is fitted in the upstream edge part of an existing pipe line, and an existing pipe line is connected.

この補修用継手では、可撓継手により角度を付け、さらにゴム輪継手によりその角度を付けた部分の長さを伸ばすことができるため、水平方向に対して角度を切断した既設管路の上流側と下流側との間の垂直落差や距離が大きい場合でも接合することができる。 In this repair joint, an angle can be given by a flexible joint, and further, the length of the angled part can be extended by a rubber ring joint. Therefore, the upstream side of the existing pipe line cut at an angle with respect to the horizontal direction. Even when a vertical drop or a distance between the base and the downstream side is large, it is possible to join.

この発明によれば、ゴム輪接合により補修用継手の長さを伸縮させ、可撓継手により補修用継手の角度を変化させることができるため、切断した上流側既設管路と下流側既設管路との角度差が所定角度、たとえば２０度を超えるように大きい場合でもこれらを接続することができる。 According to the present invention, the length of the repair joint can be expanded and contracted by rubber ring joining, and the angle of the repair joint can be changed by the flexible joint. Therefore, the cut upstream existing pipe and the downstream existing pipe These can be connected even when the angle difference between them is large so as to exceed a predetermined angle, for example, 20 degrees.

この発明の上述の目的，その他の目的，特徴および利点は、図面を参照して行う以下の実施例の詳細な説明から一層明らかとなろう。 The above object, other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

図１に示すこの発明の一実施例である補修用継手１０は管継手１２を含む。管継手１２は第１短管部１４を有し、この一端に第１受口１６を形成し、図２に示すように、他端に第１差口１８を形成する。第１受口１６は既設管路の差口を接続するための拡径受口であり、その中心は第１短管部１４の中心と一致する。 A repair joint 10 according to an embodiment of the present invention shown in FIG. 1 includes a pipe joint 12. The pipe joint 12 has a first short pipe portion 14, a first receiving port 16 is formed at one end thereof, and a first insertion port 18 is formed at the other end as shown in FIG. 2. The first receiving port 16 is a diameter-expanded receiving port for connecting a difference port of an existing pipe line, and the center thereof coincides with the center of the first short pipe part 14.

第１受口１６の上側に切欠２０を形成し、その下側に突起２２を形成する。切欠２０は第１受口１６の管壁を切り取った矩形であり、そこから接合材を充填する。突起２２は既設管路の管底位置決めに用いられ、図３に示すように第１受口１６の開口縁の底になる部分を内方に曲げて形成した水平部２２ａ、および水平部２２ａの両側から立ち上がって内方に形成した２つの突出部２２ｂから形成される。水平部２２ａの高さＷおよび突出部２２ｂの高さＷは等しく、それらの高さＷは、たとえば補修用継手１０の第１受口１６内に既設管路の差口を水平に嵌め込んだとき、第１短管部１４の管底および既設管路の管底が同一となる高さである。 A notch 20 is formed on the upper side of the first receiving port 16, and a protrusion 22 is formed on the lower side thereof. The notch 20 has a rectangular shape obtained by cutting the tube wall of the first receiving port 16 and is filled with a bonding material therefrom. The projection 22 is used for positioning the bottom of the existing pipeline, and as shown in FIG. 3, a horizontal portion 22a formed by bending inwardly the portion that becomes the bottom of the opening edge of the first receiving port 16, and the horizontal portion 22a It is formed from two projecting portions 22b that are formed inward from both sides. The height W of the horizontal portion 22a and the height W of the protruding portion 22b are equal, and the height W is obtained by, for example, inserting the existing pipe outlet horizontally into the first receiving port 16 of the repair joint 10. At this time, the pipe bottom of the first short pipe portion 14 and the pipe bottom of the existing pipe line have the same height.

第１受口１６の内面には図４に示す砂付加工２６を施す。この際、図３に示すように第１受口１６の開口縁の水平部２２ａの一部分２４ａおよび突出部２２ｂの頂点２４ｂは既設管路の差口の外周面と接するため、これらの部分には砂付加工２６を施さない。 A sanding process 26 shown in FIG. 4 is applied to the inner surface of the first receiving port 16. At this time, as shown in FIG. 3, a portion 24a of the horizontal portion 22a of the opening edge of the first receiving port 16 and a vertex 24b of the protruding portion 22b are in contact with the outer peripheral surface of the outlet of the existing pipe line. No sanding 26 is applied.

図２に示すように、第１差口１８は第１短管部１４と同径であり、ゴム輪継手２８のゴム輪受口３０に挿入される。 As shown in FIG. 2, the first differential port 18 has the same diameter as the first short pipe portion 14 and is inserted into the rubber ring receiving port 30 of the rubber ring joint 28.

ゴム輪継手２８は第２短管部３２を有し、この一端にゴム輪受口３０を形成し、他端に第２差口３４を形成する。ゴム輪受口３０は第２短管部３２と同径であり、その内周に沿って環状のゴム輪溝３６を形成し、その中にゴム輪３８を装着する。 The rubber ring joint 28 has a second short pipe portion 32, a rubber ring receiving port 30 is formed at one end, and a second differential port 34 is formed at the other end. The rubber ring receiving port 30 has the same diameter as the second short pipe portion 32, and an annular rubber ring groove 36 is formed along the inner periphery thereof, and a rubber ring 38 is mounted therein.

第２差口３４と第２短管部３２との間に段差４０を設けて、第２差口３４を縮径する。その径は第１短管部１４と同径である。この第２差口３４は可撓継手４２の第２受口４４に挿入される。 A step 40 is provided between the second outlet 34 and the second short pipe portion 32 to reduce the diameter of the second outlet 34. Its diameter is the same as that of the first short tube portion 14. The second differential port 34 is inserted into the second receiving port 44 of the flexible joint 42.

可撓継手４２は屈曲部４６を有し、この一端に球殻状の膨出部５０を形成し、他端に第３受口４８を形成する。屈曲部４６は第３受口４８の切欠２０を上側にした状態で鉛直方向に曲がり、その角度θ１は膨出部５０の軸芯５０ａと第３受口４８の軸芯４８ａとのなす角度で、たとえば２５度である。 The flexible joint 42 has a bent portion 46, a spherical shell-shaped bulged portion 50 is formed at one end, and a third receiving port 48 is formed at the other end. The bent portion 46 bends in the vertical direction with the notch 20 of the third receiving port 48 facing upward, and the angle θ1 is an angle formed by the shaft core 50a of the bulging portion 50 and the shaft core 48a of the third receiving port 48. For example, 25 degrees.

膨出部５０の内部に球形アダプタ５２がゴム輪５４を介して回転可能に嵌合する。球形アダプタ５２に第２受口４４を形成する。この膨出部５０内で球形アダプタ５２が回転することにより、第２差口３４の外面を膨出部５０の開口端に当接させるまで補修用継手１０の角度を変化させることができる。 A spherical adapter 52 is rotatably fitted into the bulging portion 50 via a rubber ring 54. A second receiving port 44 is formed in the spherical adapter 52. By rotating the spherical adapter 52 in the bulging portion 50, the angle of the repair joint 10 can be changed until the outer surface of the second difference port 34 is brought into contact with the opening end of the bulging portion 50.

第３受口４８は第１受口１６と同様に既設管路の差口を接続するための拡径受口であり、切欠２０や突起２２を含む形状および大きさならびに砂付加工２６も第１受口１６と同じである。 Similarly to the first receiving port 16, the third receiving port 48 is a diameter-enlarged receiving port for connecting a difference of the existing pipe line, and the shape and size including the notch 20 and the protrusion 22 and the sanding process 26 are also the first. It is the same as one receiving port 16.

この補修用継手１０を使用して、図５（Ａ）に示すように、たとえば鉛直方向に曲がる（上流側既設管路５６の管軸芯と下流側既設管路５８の管軸芯との角度差α、たとえば２５度）既設管路を補修する場合、まず、地面を掘削して掘削孔６０を形成し、既設管路の破損などの個所を露出させる。ついで、図５（Ｂ）に示すように、既設管路の破損個所を切断する。この際、補修用継手１０を既設管路に当てて、切断面を決める。この切断により形成された上流側既設管路５６の差口５６ａ（上流側差口、図５（Ｂ）の右側）の切断面の角度βは上流側既設管路５６の軸方向に対して、たとえば８８度に切断し、下流側既設管路５８の差口５８ａ（下流側差口、図５（Ｂ）の左側）の切断面の角度γは下流側既設管路５８の軸方向に対して、たとえば８５度に切断する。上流側差口５６ａと下流側差口５８ａとの間の距離Ｌは、たとえば７１０ｍｍであり、その垂直落差Ｈは、たとえば１２５ｍｍである。 As shown in FIG. 5A, for example, the repair joint 10 is bent in the vertical direction (the angle between the pipe axis of the upstream existing pipe 56 and the pipe axis of the downstream existing pipe 58). When repairing an existing pipe line (difference α, for example, 25 degrees), first, the excavation hole 60 is formed by excavating the ground, and a portion such as a breakage of the existing pipe line is exposed. Next, as shown in FIG. 5B, the damaged portion of the existing pipeline is cut. At this time, the repair joint 10 is applied to the existing pipe line to determine the cut surface. The angle β of the cut surface of the upstream side existing pipe 56 formed by this cutting is 56a (upstream side outlet, right side in FIG. 5B) with respect to the axial direction of the upstream side existing pipe 56. For example, the angle γ of the cut surface of the downstream side existing pipe 58 is cut at 88 degrees (downstream side outlet, left side in FIG. 5B) with respect to the axial direction of the downstream side existing pipe 58. For example, cut at 85 degrees. The distance L between the upstream side differential port 56a and the downstream side differential port 58a is, for example, 710 mm, and the vertical drop H thereof is, for example, 125 mm.

補修用継手１０を取り付ける前に、地上で管継手１２の第１差口１８をゴム輪継手２８のゴム輪受口３０に挿し込み、ゴム輪継手２８の第２差口３４を可撓継手４２の第２受口４４に挿し込むことにより、管継手１２、ゴム輪継手２８および可撓継手４２を順番に連結する。この際、第１受口１６および第３受口４８の突起２２が下側になるように各継手の方向を合わせ、この突起２２が形成されている範囲にそれぞれモルタルやボンドなどの接合材を充填する。 Before attaching the repair joint 10, the first joint 18 of the pipe joint 12 is inserted into the rubber ring receptacle 30 of the rubber joint 28 on the ground, and the second joint 34 of the rubber joint 28 is connected to the flexible joint 42. By inserting into the second receiving port 44, the pipe joint 12, the rubber ring joint 28, and the flexible joint 42 are connected in order. At this time, the directions of the joints are aligned so that the projections 22 of the first receiving port 16 and the third receiving port 48 are on the lower side, and a bonding material such as mortar or bond is applied to the range where the projections 22 are formed. Fill.

図６（Ａ）および図６（Ｂ）に示すように、第１受口１６および第３受口４８の切欠２０が上側となり、突起２２が下側となる（可撓継手４２の屈曲部４６は下方に傾く）ように補修用継手１０を掘削孔６０の中へ降ろし、第３受口４８を下流側差口５８ａの奥まで嵌め込む。下流側差口５８ａの外面を突起２２に当てた状態で第３受口４８の下に土等の固定材（図示せず）を咬ませて、第３受口４８を下流側差口５８ａに固定する。ついで、可撓継手４２の角度を調整しながら、ゴム輪結合により第１差口１８を上方にスライドさせて補修用継手１０を伸ばして、第１受口１６を上流側差口５６ａへ斜めに（第１短管部１４の管軸芯と上流側既設管路５６の管軸芯との角度差θ２）嵌め込む。そして、上流側差口５６ａの外面を突起２２に当てた状態で第１受口１６の下に土等の固定材（図示せず）を咬ませて、第１受口１６を上流側差口５６ａに固定する。この際、図６（Ａ）に示すように、横から見ると補修用継手１０は垂直方向に曲がり、図６（Ｂ）に示すように、上から見ると補修用継手１０は直線状である。 6A and 6B, the notches 20 of the first receiving port 16 and the third receiving port 48 are on the upper side, and the protrusion 22 is on the lower side (the bent portion 46 of the flexible joint 42). The repair joint 10 is lowered into the excavation hole 60 so as to be inclined downward, and the third receiving port 48 is fitted into the downstream side outlet 58a. A fixing material (not shown) such as soil is bitten under the third receiving port 48 with the outer surface of the downstream connecting port 58a being in contact with the protrusion 22, and the third receiving port 48 is moved to the downstream connecting port 58a. Fix it. Next, while adjusting the angle of the flexible joint 42, the first joint 18 is slid upward by rubber ring coupling to extend the repair joint 10, and the first receptacle 16 is inclined to the upstream joint 56 a. (An angular difference θ2 between the tube axis of the first short pipe portion 14 and the tube axis of the upstream existing pipe 56) is fitted. Then, a fixing material (not shown) such as soil is bitten under the first receiving port 16 in a state where the outer surface of the upstream connecting port 56a is in contact with the protrusion 22, and the first receiving port 16 is connected to the upstream connecting port. It fixes to 56a. At this time, as shown in FIG. 6A, when viewed from the side, the repair joint 10 bends in the vertical direction, and as shown in FIG. 6B, the repair joint 10 is linear when viewed from above. .

第１受口１６および第３受口４８の各切欠２０から接合材を供給し、下流側差口５８ａの外周面と第１受口１６の内周面との間に形成される隙間、および上流側差口５６ａの外周面と第３受口４８の内周面との間に形成される隙間に接合材を充填する。最後に、掘削孔６０に土を埋め戻す。 A gap is formed between the outer peripheral surface of the downstream side inlet 58a and the inner peripheral surface of the first receiving port 16 by supplying the bonding material from the notches 20 of the first receiving port 16 and the third receiving port 48, and A bonding material is filled in a gap formed between the outer peripheral surface of the upstream side differential port 56 a and the inner peripheral surface of the third receiving port 48. Finally, the soil is backfilled in the excavation hole 60.

このように、可撓継手４２を連結して補修用継手１０を構成すると、可撓継手４２に設けた屈曲部４６および球形アダプタ５２により補修用継手１０の接続角度が変化するので、上流側差口５６ａと下流側差口５８ａとの角度差が所定角度を超える場合でもこれらを接続することができる。すなわち、屈曲部４６が下向きに曲がるように、管継手１２およびゴム輪継手２８に可撓継手４２を連結し、第３受口４８を下流側差口５８ａに固定した状態で、第１受口１６を上流側差口５６ａの方向に向ける。この際、屈曲部４６の角度θ１と第１短管部１４の角度差θ２とをたした角度（補修用継手の角度θ１＋θ２）が上流側既設管路５６と下流側既設管路５８との角度差αより小さく、第１受口１６が上流側差口５６ａの上方にある場合、さらに球形アダプタ４８を下向きに回転させることにより、第１受口１６を上流側差口５６ａへ挿入することができる。反対に補修用継手の角度θ１＋θ２が既設管路の角度差αより大きく、第１受口１６が上流側差口５６ａの下方にある場合でも、球形アダプタ４８を上側に回転させて第１受口１６の角度を戻すことにより、第１受口１６を上流側差口５６ａへ挿入することができる。また、補修用継手の角度θ１＋θ２が既設管路の角度差αとほぼ等しく、第１受口１６上流側差口５６ａへ向いている場合でも、球形アダプタ４８を回転させて、第１受口１６の角度を微調整することにより、第１受口１６を上流側差口５６ａへスムーズに挿入することができる。 Thus, when the flexible joint 42 is connected to form the repair joint 10, the connection angle of the repair joint 10 is changed by the bent portion 46 and the spherical adapter 52 provided in the flexible joint 42. Even when the angle difference between the opening 56a and the downstream side opening 58a exceeds a predetermined angle, they can be connected. That is, in a state where the flexible joint 42 is connected to the pipe joint 12 and the rubber ring joint 28 so that the bent portion 46 bends downward, and the third receiving port 48 is fixed to the downstream side opening 58a, the first receiving port 16 is directed toward the upstream side outlet 56a. At this time, an angle formed by an angle θ1 of the bent portion 46 and an angle difference θ2 of the first short pipe portion 14 (an angle θ1 + θ2 of the repair joint) is an angle between the upstream existing pipe 56 and the downstream existing pipe 58. When the difference is less than α and the first receiving port 16 is above the upstream connecting port 56a, the first receiving port 16 can be inserted into the upstream connecting port 56a by further rotating the spherical adapter 48 downward. it can. On the other hand, even when the angle θ1 + θ2 of the repair joint is larger than the angle difference α of the existing pipe line and the first receiving port 16 is below the upstream side opening 56a, the spherical adapter 48 is rotated upward to form the first receiving port. By returning the angle of 16, the first receiving port 16 can be inserted into the upstream side differential port 56a. Further, even when the angle θ1 + θ2 of the repair joint is substantially equal to the angle difference α of the existing pipe line and faces the upstream outlet 56a of the first receiving port 16, the spherical adapter 48 is rotated to rotate the first receiving port 16 By finely adjusting the angle, the first receiving port 16 can be smoothly inserted into the upstream side differential port 56a.

補修用継手１０の両端に第１受口１６および第３受口４８を設けることにより、既設管路の切断端部を差口としてこれら差口５６ａおよび５８ａに受口１６および４８をそれぞれ接続することができるので、既設管路端部に受口を露出させるために、掘削孔６０を広げる必要がなく経済的である。 By providing the first receiving port 16 and the third receiving port 48 at both ends of the repair joint 10, the receiving ports 16 and 48 are connected to the connecting ports 56 a and 58 a, respectively, with the cut ends of the existing pipes as the connecting ports. Therefore, it is economical because it is not necessary to widen the excavation hole 60 in order to expose the receiving port at the end of the existing pipe line.

第１受口１６および第３受口４８に切欠２０を設けると、掘削壁面から突出する既設管路の差口の長さが短くても、切欠２０から各受口内の隙間に接合材を供給することができる。 When the cutout 20 is provided in the first receiving port 16 and the third receiving port 48, the joining material is supplied from the cutout 20 to the gaps in the receiving ports even if the length of the existing pipe protruding from the excavation wall surface is short. can do.

管継手１２とゴム輪継手２８とをゴム輪接合すれば、補修用継手１０を伸縮させて、上流側差口５６ａと下流側差口５８ａとの間隔に応じた長さに補修用継手１０の長さを調節することができる。 If the pipe joint 12 and the rubber ring joint 28 are joined by a rubber ring, the repair joint 10 is expanded and contracted, and the length of the repair joint 10 is adjusted according to the distance between the upstream side differential port 56a and the downstream side differential port 58a. The length can be adjusted.

第２短管部３２に段差４０を形成すると、管継手１２の第１差口１８をゴム輪継手２８のゴム輪受口３０に挿入したとき、差口１８の先端が段差４０の内面に当接して、管継手１２の差口がそれよりも奥側に向かって移動しないように係止することができる。したがって、たとえば管継手１２の第１短管部１４がゴム輪継手２８の第２短管部３２よりも長い場合でも、管継手１２の第１差口１８が可撓継手４２の第２受口４４の内側に進入することを防ぐ。 When the step 40 is formed in the second short pipe portion 32, when the first insertion opening 18 of the pipe joint 12 is inserted into the rubber ring receiving opening 30 of the rubber ring joint 28, the tip of the insertion opening 18 contacts the inner surface of the step 40. In contact therewith, it is possible to lock so that the outlet of the pipe joint 12 does not move toward the far side. Therefore, for example, even when the first short pipe portion 14 of the pipe joint 12 is longer than the second short pipe portion 32 of the rubber ring joint 28, the first differential port 18 of the pipe joint 12 is the second receiving port of the flexible joint 42. 44 is prevented from entering inside.

第１受口１６および第３受口４８に形成される突起２２は各受口の内方に向かって開口縁部を屈曲して形成されるので、突起２２を第１受口１６とは別の部品で形成するよりも部品点数が少なくて済む。 Since the projections 22 formed at the first receiving port 16 and the third receiving port 48 are formed by bending the opening edge toward the inside of each receiving port, the projection 22 is separated from the first receiving port 16. The number of parts can be smaller than the case of forming with these parts.

なお、可撓継手４２の一端に球殻状の膨出部５０を形成したが、これに代えてゴム製の蛇腹管などを用いてもよい。 In addition, although the spherical shell-like bulging portion 50 is formed at one end of the flexible joint 42, a rubber bellows tube or the like may be used instead.

可撓継手４２に屈曲部４６を設けたが、上流側既設管路５６の管軸芯と下流側既設管路５８の管軸芯との角度差αが小さい場合などでは、設けなくてもよい。この場合、球形アダプタ５２を膨出部５０内で回転させることにより、補修用継手１０の角度を調整する。 Although the bending portion 46 is provided in the flexible joint 42, it may not be provided when the angle difference α between the pipe axis of the upstream existing pipe 56 and the pipe axis of the downstream existing pipe 58 is small. . In this case, the angle of the repair joint 10 is adjusted by rotating the spherical adapter 52 within the bulging portion 50.

第１受口１６および第３受口４８の突起２２は水平部２２ａおよび２つの突出部２２ｂであるが、これに代えて、たとえば、連続する１つの突起として形成してもよい。 The protrusions 22 of the first receiving port 16 and the third receiving port 48 are the horizontal portion 22a and the two protruding portions 22b, but instead of this, for example, they may be formed as one continuous protrusion.

第１受口１６および第３受口４８に接合材充填用の切欠２０を形成したが、この切欠２０を形成しなくてもよい。 Although the notch 20 for filling the bonding material is formed in the first receiving port 16 and the third receiving port 48, the notch 20 may not be formed.

図７に示すこの発明の他の実施例である補修用継手１０は図１に示す補修用継手１０とほぼ同じであるが、可撓継手４２の屈曲部４６の曲がる方向が異なる。図１に示す補修用継手１０の屈曲部４６は図２に示すように、第３受口４８の切欠２０を上側にした状態で鉛直方向に曲がるが、図７に示す補修用継手１０の屈曲部４６はこの状態で水平方向に曲がる。これ以外の部分に関しては図１実施例の示す補修用継手１０と同様であるため、説明は省略する。 The repair joint 10 according to another embodiment of the present invention shown in FIG. 7 is substantially the same as the repair joint 10 shown in FIG. 1, but the bending direction of the bent portion 46 of the flexible joint 42 is different. As shown in FIG. 2, the bent portion 46 of the repair joint 10 shown in FIG. 1 bends in the vertical direction with the notch 20 of the third receiving port 48 facing upward, but the bend of the repair joint 10 shown in FIG. The part 46 bends in the horizontal direction in this state. The other parts are the same as the repair joint 10 shown in FIG.

この補修用継手１０は、図８（Ａ）および図８（Ｂ）に示すように、水平方向に曲がる既設管路を補修する場合に使用される。使用に際して、管継手１２、ゴム輪継手２８および可撓継手４２を順番に連結する。第１受口１６および第３受口４８の切欠２０が上側になるように合わせると、可撓継手４２の屈曲部４６が水平方向になす角度θ１に曲がる。すなわち、図８（Ａ）に示すように、横から見ると補修用継手１０は直線状であり、図８（Ｂ）に示すように、上から見ると補修用継手１０は水平方向に曲がる。これ以外の部分に関しては図１実施例の示す補修用継手１０と同様であるため、説明は省略する。 As shown in FIGS. 8A and 8B, the repair joint 10 is used when repairing an existing pipeline that bends in the horizontal direction. In use, the pipe joint 12, the rubber ring joint 28, and the flexible joint 42 are connected in order. When the notches 20 of the first receiving port 16 and the third receiving port 48 are aligned so as to be on the upper side, the bent portion 46 of the flexible joint 42 bends to an angle θ1 formed in the horizontal direction. That is, as shown in FIG. 8 (A), the repair joint 10 is linear when viewed from the side, and as shown in FIG. 8 (B), the repair joint 10 is bent in the horizontal direction. The other parts are the same as the repair joint 10 shown in FIG.

図９に示すこの発明の他の実施例である補修用継手１０は図１に示す補修用継手１０とほぼ同じであるが、可撓継手４２およびゴム輪継手２８の形状、ならびに各継手を連結する順番が異なる。図１に示す補修用継手１０は管継手１２、ゴム輪継手２８および可撓継手４２の順番で連結するのに対して、図９に示す補修用継手１０は管継手１２、可撓継手４２およびゴム輪継手２８の順番で連結して形成される。 A repair joint 10 according to another embodiment of the present invention shown in FIG. 9 is substantially the same as the repair joint 10 shown in FIG. 1, but the shapes of the flexible joint 42 and the rubber ring joint 28 and the respective joints are connected. The order to do is different. The repair joint 10 shown in FIG. 1 is connected in the order of the pipe joint 12, the rubber ring joint 28, and the flexible joint 42, whereas the repair joint 10 shown in FIG. 9 is connected to the pipe joint 12, the flexible joint 42, and the flexible joint 42. The rubber ring joints 28 are connected and formed in this order.

可撓継手４２は角度θ１の屈曲部４６を有して、一端に球殻状の膨出部５０を形成し、他端に第３差口６２を形成する。屈曲部４６の角度θ１は膨出部５０の軸芯５０ａと第３差口６２の管軸芯６２ａとのなす角度で、たとえば４５度である。第３差口６２の径は第１短管部１４と同径であり、この第３差口６２はゴム輪継手２８のゴム輪受口３０に挿入される。 The flexible joint 42 has a bent portion 46 having an angle θ1, forms a spherical shell-like bulged portion 50 at one end, and forms a third differential port 62 at the other end. The angle θ1 of the bent portion 46 is an angle formed by the axis 50a of the bulging portion 50 and the tube axis 62a of the third difference port 62, and is 45 degrees, for example. The diameter of the third insertion port 62 is the same as that of the first short pipe portion 14, and the third insertion port 62 is inserted into the rubber ring receiving port 30 of the rubber ring joint 28.

ゴム輪継手２８は第２短管部３２を有し、この一端にゴム輪受口３０を形成し、他端に第４受口６４を形成する。第４受口６４は第１受口１６と同様に既設管路の差口を接続するための拡径受口であり、図３に示す切欠２０および突起２２を含む形状や大きさならびに砂付加工２６も第１受口１６と同じである。 The rubber ring joint 28 has a second short pipe portion 32, the rubber ring receiving port 30 is formed at one end, and the fourth receiving port 64 is formed at the other end. The fourth receiving port 64 is a diameter-enlarged receiving port for connecting an existing pipe outlet similarly to the first receiving port 16, and has a shape and size including the notch 20 and the protrusion 22 shown in FIG. The processing 26 is also the same as the first receiving port 16.

この補修用継手１０は、図１０（Ａ）に示すように、たとえば鉛直方向に曲がる（角度α、たとえば４５度）既設管路であって、既設管路の補修箇所を切断した上流側差口５６ａと下流側差口５８ａとの間の垂直落差Ｈが大きい場合に使用される。補修する場合、まず、既設管路の破損などの個所を露出させるために、地面を掘削して掘削孔６０を形成する。破損個所の上流側既設管路５６を、軸方向に対して角度β、たとえば８８度に切断し、下流側既設管路５８の軸方向に対して角度γ、たとえば８５度に切断する。上流側差口５６ａと下流側差口５８ａとの間の距離Ｌは、たとえば７５５ｍｍであり、その垂直落差Ｈは、たとえば３３５ｍｍである。 As shown in FIG. 10A, the repair joint 10 is an existing pipe that bends in the vertical direction (angle α, for example, 45 degrees), for example, and is an upstream side opening that cuts the repaired portion of the existing pipe This is used when the vertical drop H between 56a and the downstream side outlet 58a is large. When repairing, first, the excavation hole 60 is formed by excavating the ground in order to expose a portion such as a breakage of an existing pipeline. The upstream existing pipeline 56 at the damaged portion is cut at an angle β, for example, 88 degrees with respect to the axial direction, and is cut at an angle γ, for example, 85 degrees, with respect to the axial direction of the downstream existing pipeline 58. The distance L between the upstream side outlet 56a and the downstream side outlet 58a is, for example, 755 mm, and the vertical drop H thereof is, for example, 335 mm.

補修用継手１０を取り付ける前に、地上で管継手１２の第１差口１８を可撓継手４２の第２受口４４へ挿入し、可撓継手４２の第３差口６２をゴム輪継手２８のゴム輪受口３０へ挿入することにより、管継手１２、可撓継手４２およびゴム輪継手２８を順番に連結する。この際、第１受口１６および第４受口６４の突起２２が下側になるように合わせ、可撓継手４２の屈曲部４６が鉛直方向に曲がるようにする。この突起２２が形成されている範囲にそれぞれ接合材を充填する。 Before attaching the repair joint 10, the first joint 18 of the pipe joint 12 is inserted into the second receptacle 44 of the flexible joint 42 on the ground, and the third joint 62 of the flexible joint 42 is inserted into the rubber ring joint 28. By inserting into the rubber ring receiving port 30, the pipe joint 12, the flexible joint 42 and the rubber ring joint 28 are connected in order. At this time, the protrusions 22 of the first receiving port 16 and the fourth receiving port 64 are aligned so that the bent portion 46 of the flexible joint 42 bends in the vertical direction. The bonding material is filled in the areas where the protrusions 22 are formed.

図１０（Ｂ）に示すように、第１受口１６および第４受口６４の切欠２０を上側にして補修用継手１０を掘削孔６０の中へ降ろす。第４受口６４の突起２２を下流側差口５８ａの外面に当てて、第４受口６４を下流側差口５８ａの奥まで嵌め込む。この状態で第４受口６４の下に土等の固定材（図示せず）を咬ませて、第４受口６４を下流側差口５８ａに固定する。この際、補修用継手１０は可撓継手４２の屈曲部４６により角度θ１だけ下方に曲がる。ついで、球形アダプタ５２により角度θ３を調整しながら、ゴム輪結合により第３差口６２を上方にスライドさせて、第１受口１６を斜めに（第１短管部１４の管軸芯と上流側既設管路５６の管軸芯との角度差θ２）上流側差口５６ａへ嵌め込む。上流側差口５６ａの外面を突起２２に当てる。第１受口１６および第４受口６４の各切欠２０から接合材を供給し、掘削孔６０に土を埋め戻す。 As shown in FIG. 10B, the repair joint 10 is lowered into the excavation hole 60 with the notch 20 of the first receiving port 16 and the fourth receiving port 64 facing upward. The projection 22 of the fourth receiving port 64 is applied to the outer surface of the downstream side opening 58a, and the fourth receiving port 64 is fitted to the back of the downstream side opening 58a. In this state, a fixing material (not shown) such as soil is bitten under the fourth receiving port 64 to fix the fourth receiving port 64 to the downstream side outlet 58a. At this time, the repair joint 10 bends downward by an angle θ1 by the bent portion 46 of the flexible joint 42. Next, while adjusting the angle θ3 by the spherical adapter 52, the third insertion port 62 is slid upward by rubber ring coupling, and the first receiving port 16 is inclined (the upstream side of the first short tube portion 14 and the upstream side of the tube axis). Angular difference θ2 with respect to the pipe axis of the existing side pipe 56) It is fitted into the upstream side outlet 56a. The outer surface of the upstream side differential opening 56 a is brought into contact with the protrusion 22. The bonding material is supplied from the notches 20 of the first receiving port 16 and the fourth receiving port 64, and the soil is backfilled in the excavation hole 60.

この補修用継手１０によれば、可撓継手４２の球形アダプタ５２および屈曲部４６により補修用継手１０の角度を曲げ、ゴム輪継手２８によりその曲げた先の部分の長さを伸ばすことができるため、上流側差口５６ａと下流側差口５８ａとの間の垂直落差Ｈが大きい場合でも接合することができる。 According to the repair joint 10, the angle of the repair joint 10 can be bent by the spherical adapter 52 and the bent portion 46 of the flexible joint 42, and the length of the bent portion can be extended by the rubber ring joint 28. Therefore, even when the vertical drop H between the upstream side differential port 56a and the downstream side differential port 58a is large, the joining can be performed.

補修用継手１０に可撓継手４２を連結することにより、可撓継手４２の屈曲部４６により補修用継手１０の角度θ１を曲げ、球形アダプタ５２を調整してさらに角度θ３だけ曲げることができる。また、第１受口１６を上流側差口５６ａに対して斜めに（角度θ２）嵌め込むと、その嵌め込み角度および可撓継手４２により補修用継手１０を既設管路に対して角度θ１＋θ２＋θ３だけ曲げることができる。 By connecting the flexible joint 42 to the repair joint 10, the angle θ 1 of the repair joint 10 can be bent by the bent portion 46 of the flexible joint 42, and the spherical adapter 52 can be adjusted to be further bent by the angle θ 3. Further, when the first receiving port 16 is fitted obliquely (angle θ2) with respect to the upstream side differential port 56a, the repair joint 10 is bent by the angle θ1 + θ2 + θ3 with respect to the existing pipe line by the fitting angle and the flexible joint 42. be able to.

この発明の一実施例の補修用継手を示す平面図である。It is a top view which shows the joint for repair of one Example of this invention. 図１実施例の補修用継手をII−II方向から見た状態を示す断面図である。It is sectional drawing which shows the state which looked at the joint for repair of FIG. 1 Example from the II-II direction. 図１実施例の補修用継手を側面から見た状態を示す平面図である。It is a top view which shows the state which looked at the joint for repair of FIG. 1 Example from the side surface. 図１実施例の補修用継手の第１受口を示す断面図である。It is sectional drawing which shows the 1st receiving port of the joint for repair of FIG. 1 Example. （Ａ）は既設管路を示す断面図である。（Ｂ）は既設管路の補修箇所を切断した状態を示す断面図である。(A) is sectional drawing which shows the existing pipeline. (B) is sectional drawing which shows the state which cut | disconnected the repair location of the existing pipeline. （Ａ）は図１実施例の補修用継手を用いて既設管路を補修した状態を示す断面図である。（Ｂ）は（Ａ）を上から見た状態を示す平面図である。(A) is sectional drawing which shows the state which repaired the existing pipe line using the joint for repair of FIG. 1 Example. (B) is a top view which shows the state which looked at (A) from the top. この発明の他の実施例の補修用継手を示す断面図である。It is sectional drawing which shows the joint for repair of other Examples of this invention. （Ａ）は図７実施例の補修用継手を用いて既設管路を補修した状態を示す断面図である。（Ｂ）は（Ａ）を上から見た状態を示す平面図である。(A) is sectional drawing which shows the state which repaired the existing pipe line using the joint for repair of FIG. 7 Example. (B) is a top view which shows the state which looked at (A) from the top. この発明の他の実施例の補修用継手を示す断面図である。It is sectional drawing which shows the joint for repair of other Examples of this invention. （Ａ）は既設管路を示す断面図である。（Ｂ）は図９実施例の補修用継手を用いて既設管路を補修した状態を示す断面図である。(A) is sectional drawing which shows the existing pipeline. (B) is sectional drawing which shows the state which repaired the existing pipe line using the joint for repair of FIG. 9 Example.

符号の説明Explanation of symbols

１０…補修用継手
１２…管継手
１６…第１受口
１８…第１差口
２８…ゴム輪継手
３０…ゴム輪受口
３４…第２差口
４２…可撓継手
４４…第２受口
４８…第３受口
６２…第３差口
６４…第４受口 DESCRIPTION OF SYMBOLS 10 ... Repair joint 12 ... Pipe joint 16 ... 1st receiving port 18 ... 1st insertion port 28 ... Rubber ring coupling 30 ... Rubber ring receiving port 34 ... 2nd insertion port 42 ... Flexible coupling 44 ... 2nd receiving port 48 ... 3rd port 62 ... 3rd port 64 ... 4th port

Claims

陶管やヒューム管等の端部を受容するための受口を両端に設け、前記受口の間を３つの継手で連結した補修用継手であって、
少なくともゴム輪継手および可撓継手を含む、補修用継手。 A repair joint in which a receiving port for receiving an end of a ceramic pipe or a fume pipe is provided at both ends, and the receiving port is connected by three joints,
A repair joint including at least a rubber ring joint and a flexible joint.

前記３つの継手が、
一端に陶管やヒューム管等の端部を受容するための第１受口を形成し、他端に第１差口を形成する管継手、
一端に前記第１差口を受容するゴム輪受口を形成し、他端に第２差口を形成するゴム輪継手、および
一端に前記第２差口を受容する第２受口を形成し、他端に陶管やヒューム管等の端部を受容するための第３受口を形成する可撓継手である、請求項１記載の補修用継手。 The three joints are
A pipe joint that forms a first receiving port for receiving an end of a ceramic tube or a fume tube at one end and a first insertion port at the other end,
A rubber ring receiving hole for receiving the first opening is formed at one end, a rubber ring joint for forming the second opening at the other end, and a second receiving hole for receiving the second opening at the other end. The repair joint according to claim 1, which is a flexible joint that forms a third receiving port for receiving an end of a ceramic pipe, a fume pipe or the like at the other end.

前記３つの継手が、
一端に陶管やヒューム管等の端部を受容するための第１受口を形成し、他端に第１差口を形成する管継手、
一端に前記第１差口を受容する第２受口を形成し、他端に第３差口を形成する可撓継手、および
一端に前記第３差口を受容するゴム輪受口を形成し、他端に陶管やヒューム管等の端部を受容するための第４受口を形成するゴム輪継手である、請求項１記載の補修用継手。 The three joints are
A pipe joint that forms a first receiving port for receiving an end of a ceramic tube or a fume tube at one end and a first insertion port at the other end,
A second joint that receives the first slot is formed at one end, a flexible joint that forms a third slot at the other end, and a rubber ring socket that receives the third slot is formed at one end. The repair joint according to claim 1, wherein the repair joint is a rubber ring joint that forms a fourth receiving port for receiving an end portion of a ceramic tube, a fume tube, or the like at the other end.