JP2023061344A - Joining method and joining member - Google Patents

Joining method and joining member Download PDF

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JP2023061344A
JP2023061344A JP2022015932A JP2022015932A JP2023061344A JP 2023061344 A JP2023061344 A JP 2023061344A JP 2022015932 A JP2022015932 A JP 2022015932A JP 2022015932 A JP2022015932 A JP 2022015932A JP 2023061344 A JP2023061344 A JP 2023061344A
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pipe
joining
joining method
tube
fixing
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誠二 松島
Seiji Matsushima
誠 中村
Makoto Nakamura
信行 畑
Nobuyuki Hata
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Nippon Chutetsukan KK
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Abstract

To provide a joining method and a joining member which facilitates centering of a second pipe and a first pipe and can shorten work time in an excavated trench without being affected by the level of skill of a worker.SOLUTION: A joining method for joining a first pipe and a second pipe into which inner diameter part the first pipe is inserted and which has an increased diameter part formed with a larger diameter than an outer diameter of the first pipe, the joining method comprising the steps of: fixing the first pipe to a fixing part; attaching, to the fixing part, an arm part protruding in a direction of the second pipe; making an abutment part formed at the arm part abut on the increased diameter part such that the abutment part protrudes from an end part of the increased diameter part in a direction of the second part; attaching a reaction force member to the first pipe; attaching a joining member to the fixing part; and inserting the second pipe into the inner diameter part by operating the joining member.SELECTED DRAWING: Figure 7

Description

本発明は、管部材の組み立て、特に鋳鉄管同士の接合を行う際に用いられる接合方法及び接合部材に関する。 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joining method and a joining member used for assembling pipe members, particularly for joining cast iron pipes together.

従来、上下水道管などを埋設する工法として、種々の工法が知られており、開削工法や推進工法などが実施されている。 Conventionally, various construction methods are known as construction methods for burying water supply and sewage pipes, such as an open cut method and jacking method.

開削工法は、地盤を直接掘削して掘削溝を掘削し、掘削溝内に基礎等を形成して新設管となる複数の管を設置し、複数の管を互いに接合して敷設する工法である。 The open-cut method is a construction method in which the ground is directly excavated to excavate an excavated trench, a foundation is formed in the excavated trench, multiple pipes are installed as new pipes, and the multiple pipes are joined together to lay them. .

敷設する複数の管のうち、一方の管の挿し口を他方の管の受け口に嵌め込む際、新設管の円滑な敷設のために、管同士の芯出し位置決め作業を行う必要がある。 When inserting the insertion port of one of a plurality of pipes to be laid into the receptacle of the other pipe, it is necessary to perform centering and positioning work between the pipes for smooth laying of the new pipe.

この芯出し位置決め作業は、一方の管は掘削溝の外部からユニックなどのクレーンで吊った状態で掘削溝内に落とし込み、敷設済みの他方の管と新設の一方の管との芯出し、および一方の管の姿勢補助を掘削溝内の作業員とクレーンの操作員とで共同して人力補助によって行っていた。 In this centering and positioning work, one pipe is dropped into the excavated groove in a state of being suspended from the outside of the excavated groove by a crane such as a Unic, and the other pipe that has already been laid and the newly installed pipe are aligned. The position of the pipe was assisted by human power in cooperation with the workers in the excavation trench and the crane operator.

しかし、この人力補助での接合管の芯出し位置決めは、掘削溝内での作業時間が多くなると共に、作業に必要な人数も多くなってしまうため、作業工数の抑制が難しいことから、芯出し位置決め作業を容易に行うことができる手法が求められていた。また、作業員の目視での作業が必要となり、さらに管を吊った状態で芯出しの位置を保持しなければならないため、作業員の熟練度も要求され、容易に芯出し位置決め作業を行うことができないという問題もあった。 However, this human-assisted centering and positioning of the joint pipe requires a lot of work time in the excavated trench, and the number of people required for the work is also large. There has been a demand for a method that facilitates the positioning work. In addition, the work must be done visually by the worker, and the centering position must be maintained while the pipe is suspended. There was also the problem of not being able to

さらに、従来の新設管の接合作業は、他方の管の受け口及び一方の管の挿し口にバンド部材をそれぞれ取り付け、該バンド部材をラチェット式の接合用機材で互いに引き合わせることで一方の管の挿し口を他方の管の受け口に接合するという方法が行われていた。 Furthermore, in the conventional joining work of new pipes, band members are attached to the receiving port of the other pipe and the insertion port of one pipe, respectively, and the band members are pulled together by a ratchet-type joining device to connect the one pipe. The practice has been to join the spigot to the receptacle of the other tube.

なお、管部材の芯出し構造は種々の構造が知られており、例えば、特許文献1に記載されているように、2つの接続すべき鋼管の一方の鋼管の対向端部の外周に着脱可能に装着できるようにするため、複数個に分割された弧状部材を結合手段で結合させて形成したリング状をなす治具本体と、治具本体に設けられ他方の鋼管に向けて延出するようにした複数の腕片と、各腕片の先端部に螺合させ鋼管の中心軸線に向け進退操作できるようにしたねじ調整棒とから成り、複数のねじ調整棒の先端で他方の鋼管の外周面を押圧させ、2つの鋼管の中心軸線を合致させるようにした構造が知られている。 Various structures are known for the centering structure of the pipe member. In order to be able to attach to a steel pipe, a ring-shaped jig body formed by joining a plurality of divided arc-shaped members with a coupling means, and a jig body provided in the jig body so as to extend toward the other steel pipe and a screw adjusting rod that is screwed to the tip of each arm so that it can be moved forward and backward toward the center axis of the steel pipe, and the tip of the screw adjusting rod is the outer circumference of the other steel pipe. A structure is known in which the surfaces are pressed and the central axes of two steel pipes are aligned.

このような芯出し構造によれば、鋼管にエレクションピースを溶接することを必要としないので、鋼管の溶接接合作業においてその作業能率が著しく高められ、また、鋼管の溶接接合において品質の向上が計れるなどの効果を奏する。更に、本発明の芯出し治具は、同一のものを繰り返えし使用できるので、鋼管の溶接接合作業においてコストの削減を計るに極めて有利であるという効果を有する。 According to such a centering structure, it is not necessary to weld the erection piece to the steel pipe, so that the work efficiency in the steel pipe welding work is significantly improved, and the quality of the steel pipe weld joint can be improved. and other effects. Further, the same centering jig of the present invention can be used repeatedly, so that it is extremely advantageous in reducing costs in welding and joining steel pipes.

特開2000-263292号公報JP-A-2000-263292

しかしながら、従来の芯出し構造は、接合端部を互いに溶接するために芯出しを行う方式であるため、鋼管の対向部分の外径は同一である。これに対して、ダクタイル鋳鉄管などが用いられる接合管は、敷設済みの他方の管の受け口に一方の管の挿し口を管軸方向に移動させることにより挿入するため、受け口と挿し口の外径が異なることによって、従来の芯出し構造を適用することができないという問題があった。 However, since the conventional centering structure is a method of performing centering for welding the joint ends together, the outer diameters of the facing portions of the steel pipes are the same. On the other hand, joint pipes such as ductile cast iron pipes are inserted by moving the spigot of one pipe into the socket of the other pipe that has already been laid by moving the spigot in the axial direction of the pipe. There was a problem that the conventional centering structure could not be applied due to the different diameters.

また、開削工法は、上述したように、掘削溝内にクレーンなどで新設管を吊り下げて作業するため、掘削溝内での作業時間を短縮させることを目的として、後から敷設する一方の管を掘削溝内に下ろすだけで敷設済みの他方の管と一方の管の芯出し位置決め作業を容易に行うことが求められていた。 In the open-cut method, as described above, a new pipe is hung by a crane or the like in the excavated trench. It has been required to easily perform the centering and positioning work of the other pipe that has already been laid and the one pipe by simply lowering the pipe into the excavated trench.

そこで本発明は、上記問題点に鑑みてされた発明であり、第2の管と第1の管の芯出しを容易に行うことができると共に、作業員の熟練度に左右されずに掘削溝内での作業時間を短縮することができる接合方法及び接合部材を提供することを目的とする。 Therefore, the present invention is an invention that has been made in view of the above problems, and it is possible to easily perform centering of the second pipe and the first pipe, and to dig a trench without being affected by the skill level of workers. An object of the present invention is to provide a joining method and a joining member capable of shortening the working time inside.

本発明に係る接合方法は、第1の管と、前記第1の管が内径部に挿入されると共に、前記第1の管の挿入部の外径よりも大きく形成された拡径部が形成された第2の管との接合方法であって、第1の管に固定部を固定する工程と、前記固定部に第2の管の方向に突出するアーム部を取り付ける工程と、前記アーム部に形成された当接部を前記拡径部に前記拡径部の端部から前記当接部が前記第2の管の方向にはみ出すように当接させる工程と、前記第1の管に反力部材を取り付ける工程と、前記固定部に接合部材を取り付ける工程と、前記接合部材を操作して第2の管を前記内径部に挿入する工程と、を備えることを特徴とする。 In the joining method according to the present invention, a first pipe is inserted into an inner diameter portion, and an enlarged diameter portion is formed to be larger than an outer diameter of an insertion portion of the first pipe. A method for joining a second pipe to a second pipe, comprising the steps of: fixing a fixing portion to the first pipe; attaching an arm portion projecting in the direction of the second pipe to the fixing portion; a step of contacting the contact portion formed in the above with the expanded diameter portion so that the contact portion protrudes from the end of the expanded diameter portion toward the second pipe; The method is characterized by comprising the steps of: attaching a force member; attaching a joining member to the fixing portion; and operating the joining member to insert the second tube into the inner diameter portion.

また、本発明に係る接合方法において、前記第2の管を前記内径部に挿入した後、前記アーム部を取り外す工程を備えると好適である。 Moreover, in the joining method according to the present invention, it is preferable to include a step of removing the arm portion after inserting the second pipe into the inner diameter portion.

また、本発明に係る接合方法において、前記第2の管を前記内径部に挿入した後、前記接合部材を取り外す工程を備えると好適である。 Moreover, in the joining method according to the present invention, it is preferable to include the step of removing the joining member after inserting the second pipe into the inner diameter portion.

また、本発明に係る接合方法において、前記第2の管を前記内径部に挿入した後、前記反力部材を取り外す工程を備えると好適である。 Moreover, in the joining method according to the present invention, it is preferable to include the step of removing the reaction force member after inserting the second pipe into the inner diameter portion.

また、本発明に係る接合部材は、第1の管と、前記第1の管が内径部に挿入されると共に、前記第1の管の挿入部の外径よりも大きく形成された拡径部が形成された第2の管との接合に用いられる接合部材であって、第1の管に固定される固定部と、係合可能な係合爪と、前記第2の管に取り付けられた反力部材と連結手段によって連結される連結部と、前記連結部を操作して前記連結手段を巻き取る巻取部と、を備えることを特徴とする。 Further, the joint member according to the present invention includes a first pipe and an enlarged diameter portion into which the first pipe is inserted and formed to be larger than the outer diameter of the insertion portion of the first pipe. A joining member used for joining with a second pipe formed with a fixing part fixed to the first pipe, an engaging claw that can be engaged, and attached to the second pipe It is characterized by comprising a connecting portion connected to the reaction member by a connecting means, and a winding portion for operating the connecting portion to wind up the connecting means.

また、本発明に係る接合部材において、前記巻取部は、電動工具によって操作可能な操作部を備えると好適である。 Moreover, in the joining member according to the present invention, it is preferable that the winding section includes an operation section that can be operated by an electric power tool.

上記発明の概要は、本発明の必要な特徴の全てを列挙したものではなく、これらの特徴群のサブコンビネーションもまた発明となり得る。 The above summary of the invention is not an exhaustive list of all the necessary features of the invention, and subcombinations of these features can also be inventions.

本発明に係る接合方法は、第1の管と、前記第1の管が内径部に挿入されると共に、前記第1の管の挿入部の外径よりも大きく形成された拡径部が形成された第2の管との接合方法であって、第1の管に固定部を固定する工程と、前記固定部に第2の管の方向に突出するアーム部を取り付ける工程と、前記アーム部に形成された当接部を前記拡径部に前記拡径部の端部から前記当接部が前記第2の管の方向にはみ出すように当接させる工程と、前記第1の管に反力部材を取り付ける工程と、前記固定部に接合部材を取り付ける工程と、前記接合部材を操作して第2の管を前記内径部に挿入する工程と、を備えるので、芯出しされた状態を保持することが可能となり、作業員の熟練度に依ることなく、掘削溝内での作業時間を短縮することができる。 In the joining method according to the present invention, a first pipe is inserted into an inner diameter portion, and an enlarged diameter portion is formed to be larger than an outer diameter of an insertion portion of the first pipe. A method for joining a second pipe to a second pipe, comprising the steps of: fixing a fixing portion to the first pipe; attaching an arm portion projecting in the direction of the second pipe to the fixing portion; a step of contacting the contact portion formed in the above with the expanded diameter portion so that the contact portion protrudes from the end of the expanded diameter portion toward the second pipe; A step of attaching a force member, a step of attaching a joining member to the fixing portion, and a step of operating the joining member to insert the second pipe into the inner diameter portion, so that the centered state is maintained. It is possible to shorten the working time in the excavated trench without depending on the skill level of the workers.

また、本発明に係る接合部材は、第1の管と、前記第1の管が内径部に挿入されると共に、前記第1の管の挿入部の外径よりも大きく形成された拡径部が形成された第2の管との接合に用いられる接合部材であって、第1の管に固定される固定部と、係合可能な係合爪と、前記第2の管に取り付けられた反力部材と連結手段によって連結される連結部と、前記連結部を操作して前記連結手段を巻き取る巻取部と、を備えるので、作業員の熟練度に依ることなく、掘削溝内での作業時間を短縮することができる。 Further, the joint member according to the present invention includes a first pipe and an enlarged diameter portion into which the first pipe is inserted and formed to be larger than the outer diameter of the insertion portion of the first pipe. A joining member used for joining with a second pipe formed with a fixing part fixed to the first pipe, an engaging claw that can be engaged, and attached to the second pipe Since it is provided with a connection part connected by a reaction member and a connection means, and a winding part that operates the connection part and winds up the connection means, it can be used in an excavated trench without depending on the skill level of a worker. work time can be shortened.

開削工法に用いる新設管の概要を示す斜視図。The perspective view which shows the outline|summary of the new pipe used for an open-cut method. 本発明の第1の実施形態に係る接合方法に用いられる芯出し部材の斜視図。FIG. 2 is a perspective view of a centering member used in the joining method according to the first embodiment of the present invention; 本発明の第1の実施形態に係る接合方法に用いられる芯出し部材の固定部の斜視図。FIG. 4 is a perspective view of a fixing portion of a centering member used in the joining method according to the first embodiment of the present invention; 本発明の第1の実施形態に係る接合方法に用いられる芯出し部材のアーム部の斜視図。FIG. 4 is a perspective view of an arm portion of a centering member used in the joining method according to the first embodiment of the present invention; 本発明の第1の実施形態に係る接合方法に用いられる芯出し部材の側面図。FIG. 2 is a side view of a centering member used in the joining method according to the first embodiment of the present invention; 本発明の第1の実施形態に係る接合方法に用いられる芯出し部材と共に用いられる反力部材であって、(a)は取付状態を示す図、(b)は分割片を開いた状態を示す図。A reaction member used together with the centering member used in the joining method according to the first embodiment of the present invention, wherein (a) is a diagram showing an attached state, and (b) is a diagram showing a state in which the split pieces are opened. figure. 本発明の第1の実施形態に係る接合部材の斜視図。1 is a perspective view of a joint member according to a first embodiment of the present invention; FIG. (a)は、本発明の第1の実施形態に係る接合部材を説明する斜視図、(b)本発明の第1の実施形態に係る接合方法に用いる接合部材の変形例を示す斜視図。(a) is a perspective view for explaining the joining member according to the first embodiment of the present invention; (b) is a perspective view showing a modification of the joining member used in the joining method according to the first embodiment of the present invention; 本発明の第1の実施形態に係る接合方法のフロー図。FIG. 2 is a flow diagram of a joining method according to the first embodiment of the present invention; 本発明の第2の実施形態に係る接合方法に用いられる芯出し部材のアーム部の斜視図。FIG. 8 is a perspective view of an arm portion of a centering member used in a joining method according to a second embodiment of the present invention; 本発明の第2の実施形態に係る接合方法に用いられる芯出し部材の固定部の斜視図。FIG. 8 is a perspective view of a fixing portion of a centering member used in a joining method according to a second embodiment of the present invention; 本発明の第2の実施形態に係る接合方法に用いられる芯出し部材の固定部の変形例を示す斜視図。FIG. 11 is a perspective view showing a modification of the fixing portion of the centering member used in the joining method according to the second embodiment of the present invention; 本発明の第2の実施形態に係る接合方法に用いられる芯出し部材と共に用いられる反力部材の斜視図。The perspective view of the reaction member used with the centering member used for the joining method which concerns on the 2nd Embodiment of this invention. 本発明の第2の実施形態に係る接合方法に用いられる芯出し部材と伴い用いられる反力部材の斜視図。FIG. 8 is a perspective view of a reaction member used together with the centering member used in the joining method according to the second embodiment of the present invention; 本発明の第2の実施形態に係る接合部材の斜視図。The perspective view of the joining member which concerns on the 2nd Embodiment of this invention.

以下、本発明を実施するための好適な実施形態について、図面を用いて説明する。なお、以下の実施形態は、各請求項に係る発明を限定するものではなく、また、実施形態の中で説明されている特徴の組み合わせの全てが発明の解決手段に必須であるとは限らない。 Preferred embodiments for carrying out the present invention will be described below with reference to the drawings. In addition, the following embodiments do not limit the invention according to each claim, and not all combinations of features described in the embodiments are essential for the solution of the invention. .

[第1の実施形態]
図1は、開削工法に用いる新設管の概要を示す斜視図であり、図2は、本発明の第1の実施形態に係る接合方法に用いられる芯出し部材の斜視図であり、図3は、本発明の第1の実施形態に係る接合方法に用いられる芯出し部材の固定部の斜視図であり、図4は、本発明の第1の実施形態に係る接合方法に用いられる芯出し部材のアーム部の斜視図であり、図5は、本発明の第1の実施形態に係る接合方法に用いられる芯出し部材の側面図であり、図6は、本発明の第1の実施形態に係る接合方法に用いられる芯出し部材と共に用いられる反力部材であって、(a)は取付状態を示す図、(b)は分割片を開いた状態を示す図であり、図7は、本発明の第1の実施形態に係る接合部材の斜視図であり、図8(a)は、本発明の第1の実施形態に係る接合部材を説明する斜視図、(b)本発明の第1の実施形態に係る接合方法に用いる接合部材の変形例を示す斜視図であり、図9は、本発明の第1の実施形態に係る接合方法のフロー図である。
[First embodiment]
FIG. 1 is a perspective view showing an outline of a new pipe used in an open-cut method, FIG. 2 is a perspective view of a centering member used in the joining method according to the first embodiment of the present invention, and FIG. 4 is a perspective view of a fixing portion of a centering member used in the joining method according to the first embodiment of the present invention, and FIG. 4 is a centering member used in the joining method according to the first embodiment of the present invention; FIG. 5 is a side view of a centering member used in the joining method according to the first embodiment of the present invention, and FIG. 6 is a perspective view of the arm portion of the first embodiment of the present invention. FIG. 7 shows a reaction member used together with a centering member used in such a joining method, in which (a) is a diagram showing an attached state, (b) is a diagram showing a state in which the split pieces are opened, and FIG. It is a perspective view of a joint member according to a first embodiment of the present invention, FIG. 8 (a) is a perspective view for explaining the joint member according to the first embodiment of the present invention, (b) the first embodiment of the present invention. FIG. 9 is a perspective view showing a modification of the joining member used in the joining method according to the embodiment of FIG. 9, and FIG. 9 is a flow chart of the joining method according to the first embodiment of the present invention.

図1に示すように、本実施形態に係る接合方法を用いて敷設される新設管(第2の管1及び第1の管2)は、所定の長さを有する中空の鉄管部材であり、ダクタイル鉄管が好適
に用いられる。第2の管1及び第1の管2は、先端側に挿し口4となる挿入部が形成されると共に、基端側に受け口3aが形成され、挿入部よりも外径が大きく形成された拡径部3が形成されている。
As shown in FIG. 1, the new pipes (the second pipe 1 and the first pipe 2) laid using the joining method according to the present embodiment are hollow iron pipe members having a predetermined length, A ductile iron pipe is preferably used. The second tube 1 and the first tube 2 are formed with an insertion portion serving as an insertion port 4 on the distal end side, and a receiving port 3a is formed on the proximal end side, and the outer diameter is formed larger than that of the insertion portion. An enlarged diameter portion 3 is formed.

第2の管1及び第1の管2は、敷設済みの第2の管1の受け口3a内に第1の管2の挿し口4を嵌め込むことによって互いに接合される。受け口3aと挿し口4との間には、図示しないシール用ゴム輪と抜け出し防止用のロックリングとが設けられている。挿し口4を受け口3a内に挿入すると、挿し口4の先端と受け口3aとはシール用ゴム輪が密着して、隙間は、形成されない。なお、第1の管2の挿入に伴って第2の管1の受け口3aに取り付けられたシール用ゴム輪が脱落や損傷しないように挿し口4の外周及びシール用ゴム輪の内周には滑剤が塗布される。 The second pipe 1 and the first pipe 2 are joined together by fitting the spigot 4 of the first pipe 2 into the receptacle 3a of the second pipe 1 that has already been laid. A sealing rubber ring (not shown) and a lock ring for preventing slippage are provided between the socket 3a and the insertion port 4. As shown in FIG. When the insertion port 4 is inserted into the socket 3a, the tip of the insertion port 4 and the socket 3a are in close contact with the rubber ring for sealing, and no gap is formed. To prevent the sealing rubber ring attached to the receiving port 3a of the second pipe 1 from falling off or being damaged when the first pipe 2 is inserted, the outer circumference of the insertion port 4 and the inner circumference of the sealing rubber ring are A lubricant is applied.

第2の管1及び第1の管2は、既に掘削溝に敷設された第2の管1の受け口3aに第1の管2の挿し口4を接合する際に、第2の管1と第1の管2の中心線が一致するように芯出しを行う必要がある。 The second pipe 1 and the first pipe 2 are connected to the second pipe 1 and Centering should be done so that the centerlines of the first tube 2 are coincident.

図2に示すように、本実施形態に係る接合方法に用いられる芯出し部材10は、第1の管2に取り付けることで、第2の管1及び第1の管2の芯出しを行うことができる。本実施形態に係る芯出し部材10は、第1の管2の挿し口4に取り付けられる固定部11と、固定部11に着脱自在に取り付けられるアーム部12とを有している。 As shown in FIG. 2, the centering member 10 used in the joining method according to the present embodiment is attached to the first pipe 2 to center the second pipe 1 and the first pipe 2. can be done. The centering member 10 according to this embodiment has a fixing portion 11 attached to the insertion opening 4 of the first pipe 2 and an arm portion 12 detachably attached to the fixing portion 11 .

図3に示すように、固定部11は、第1の管2の挿し口4の外周に巻き回されて取り付けられるバンド状の部材である。固定部11は、挿し口4の先端部から所定の距離の位置に取り付けられ、挿し口4の受け口3aへの挿入部分と重畳しないように取り付けられる。固定部11は、バンド本体25と、バンド本体25の両端から第1の管2の径方向に突出して形成された一対の鍔部26、26を有しており、該鍔部26、26同士を互いに連結するボルト・ナット23によって固定されている。鍔部26は、所定の間隔を有して配置されており、ボルト・ナット23の軸部23aは、当該間隔を横切るように配置され、後述する着脱部20が係合及び固定可能に形成されている。また、鍔部26には、後述する接合部材30が取り付けられる接合部材取付部24が長手方向に突出するように形成されている。 As shown in FIG. 3 , the fixing portion 11 is a band-like member that is wound around and attached to the outer periphery of the insertion port 4 of the first pipe 2 . The fixed part 11 is attached at a position at a predetermined distance from the tip of the insertion port 4, and is attached so as not to overlap the insertion portion of the insertion port 4 into the receiving port 3a. The fixing portion 11 has a band main body 25 and a pair of flanges 26, 26 formed by protruding from both ends of the band main body 25 in the radial direction of the first pipe 2. are fixed by bolts and nuts 23 that connect them to each other. The collar portion 26 is arranged with a predetermined interval, and the shaft portion 23a of the bolt/nut 23 is arranged so as to traverse the interval, and is formed so as to be able to engage and fix the attachment/detachment portion 20 described later. ing. Further, the flange portion 26 is formed with a joint member attachment portion 24 to which a joint member 30 (to be described later) is attached so as to protrude in the longitudinal direction.

図2に示すように、アーム部12は、固定部11に取り付けられるとともに、固定部11から第2の管1の方向に突出するように延設される。図4に示すように、アーム部12は、基端側に着脱部20が形成され、該着脱部20が固定部11に取り付けられる。また、アーム部12は、着脱部20から長手方向に沿って略平行に延びる一対の腕部16、16と、一対の腕部16、16の先端側に形成された当接部13とを備えている。一対の腕部16は、後述する当接部13と拡径部3とが確実に当接するように上側に凸となるように湾曲している。 As shown in FIG. 2 , the arm portion 12 is attached to the fixed portion 11 and extends from the fixed portion 11 so as to protrude in the direction of the second pipe 1 . As shown in FIG. 4 , the arm portion 12 has a detachable portion 20 formed on the base end side, and the detachable portion 20 is attached to the fixed portion 11 . Further, the arm portion 12 includes a pair of arm portions 16, 16 extending substantially in parallel along the longitudinal direction from the attachment/detachment portion 20, and a contact portion 13 formed on the tip side of the pair of arm portions 16, 16. ing. The pair of arm portions 16 are curved to protrude upward so that the contact portion 13 and the enlarged diameter portion 3, which will be described later, reliably contact each other.

着脱部20は、固定部11のボルト23の軸部23aに係合する係合部21と係合部21に係合した軸部23aを保持する爪部22を有している。爪部22は、図示しないバネで軸部23aに付勢されて軸部23aと係脱自在に構成されており、当接部13を拡径部3に当接させて第1の管2と第2の管1の芯出しを行う際にアーム部12が不用意に抜け出してしまうことを防止すると共に、第1の管2の接合後、アーム部12を取り外すことができるように構成されている。 The detachable portion 20 has an engaging portion 21 that engages with the shaft portion 23a of the bolt 23 of the fixing portion 11 and a claw portion 22 that holds the shaft portion 23a engaged with the engaging portion 21 . The claw portion 22 is urged by a spring (not shown) to the shaft portion 23a so as to be freely engaged with and disengaged from the shaft portion 23a. The arm portion 12 is configured to prevent the arm portion 12 from inadvertently slipping out when the second pipe 1 is centered, and to be able to remove the arm portion 12 after the first pipe 2 is joined. there is

一対の腕部16、16は、所定の空隙Sを有して配置されており、先端部が互いに補強部17によって連結されている。また、必要に応じて腕部16の中間部分にも補強部を設けても構わない。腕部16の先端には、一対の腕部16のそれぞれから互いに離間する方
向に延びる当接部13が形成されている。このように、当接部13が互いに離間する方向に延設しているので、当接部13が拡径部3に二箇所で接することで、第2の管1と第1の管2の芯出しをより精度良く行うことができる。
A pair of arm portions 16 , 16 are arranged with a predetermined gap S, and their distal ends are connected to each other by reinforcing portions 17 . Also, a reinforcing portion may be provided in the intermediate portion of the arm portion 16 as necessary. A contact portion 13 is formed at the tip of the arm portion 16 and extends from each of the pair of arm portions 16 in a direction away from each other. In this way, since the contact portions 13 are extended in directions away from each other, the contact portions 13 are in contact with the enlarged diameter portion 3 at two points, thereby separating the second pipe 1 and the first pipe 2. Centering can be performed with higher accuracy.

当接部13は、長手方向に沿って所定の長さを有しており、図5に示すように、第2の管1の受け口3aの端部と第1の管2の挿し口4の先端とを位置合わせした状態で拡径部3に当接させた際、拡径部3と当接する当接部分14と拡径部3の基端からはみ出して配置される挿入代部分15とを有している。受け口3a内には、シール用ゴム輪(図示せず)がセットされているが、そのセットされている位置は、受け口3aの端部から管軸方向他方の端部に向かって一定量離れた位置となっている。このとき、第1の管2の挿し口4がシール用ゴム輪に挿入されるまで芯出し状態を維持しなければならないが、この挿入代部分15を有することで、第1の管2を第2の管1に挿入した場合、当接部13が拡径部3の長手方向に沿って先端側へ移動し、シール用ゴム輪に挿入されるまで挿入代部分15が拡径部3と確実に当接し、当接部分14が拡径部3と当接しない位置まで第1の管2を挿入した場合でも、当接部13が拡径部3から脱落することを防止し、確実な芯出しを維持することができる。 The contact portion 13 has a predetermined length along the longitudinal direction, and as shown in FIG. A contact portion 14 that contacts the enlarged diameter portion 3 and an insertion allowance portion 15 that protrudes from the base end of the enlarged diameter portion 3 when the tip is aligned with the enlarged diameter portion 3 and is brought into contact with the enlarged diameter portion 3 . have. A rubber ring (not shown) for sealing is set in the socket 3a, and the position where it is set is a certain distance from the end of the socket 3a toward the other end in the tube axial direction. position. At this time, the centered state must be maintained until the insertion port 4 of the first pipe 2 is inserted into the rubber ring for sealing. 2, the abutting portion 13 moves toward the distal end along the longitudinal direction of the enlarged diameter portion 3, and the insertion allowance portion 15 is securely connected to the enlarged diameter portion 3 until it is inserted into the rubber ring for sealing. , and even when the first tube 2 is inserted to a position where the contact portion 14 does not contact the enlarged diameter portion 3, the contact portion 13 is prevented from falling off from the enlarged diameter portion 3, and a reliable core You can keep the output.

つぎに、図6から8を参照して本実施形態に係る接合部材30の説明を行う。図7及び図8(a)に示すように、接合部材30は、固定部11の接合部材取付部24と係合する係合爪31を有しており、固定部11に取付可能に形成されている。このとき、接合部材30は、一対の腕部16、16間の空隙Sに挟み込まれることで、横方向に拘束されている。また、接合部材30は、ウォームギヤ32とウォームギヤ32に歯合する歯車33とを連結部として有している。ウォームギヤ32は、操作部32aを操作して回転自在に配置されており、歯車33は、後述するワイヤ41を巻き取り可能な巻取部34を有している。 Next, the joint member 30 according to this embodiment will be described with reference to FIGS. As shown in FIGS. 7 and 8A, the joint member 30 has an engaging claw 31 that engages with the joint member mounting portion 24 of the fixed portion 11, and is formed to be attachable to the fixed portion 11. ing. At this time, the joint member 30 is held in the lateral direction by being sandwiched in the gap S between the pair of arm portions 16 , 16 . In addition, the joint member 30 has a worm gear 32 and a gear 33 meshing with the worm gear 32 as a connecting portion. The worm gear 32 is arranged to be rotatable by operating an operation portion 32a, and the gear 33 has a winding portion 34 capable of winding a wire 41, which will be described later.

操作部32aは、例えばインパクトドライバのような電動工具を取り付けてウォームギヤ32を回転させると好適である。また、電動工具に限らず、手動で回転力を付与するハンドルなどを取り付けても構わない。 It is preferable that the operating portion 32a rotates the worm gear 32 by attaching an electric tool such as an impact driver. Moreover, it is not limited to an electric tool, and a handle or the like for manually applying a rotational force may be attached.

さらに、図8(b)に示すように接合部材30を取り付けずに、従来周知のラチェット構造を有する接合用機材30´を用いても構わない。この場合、固定部11にフック53を有するフック付き金具50を取り付け、反力部材40と当該フック53とを接合用機材30´で連結して締結することができる。 Furthermore, as shown in FIG. 8(b), a joining material 30' having a conventionally known ratchet structure may be used without attaching the joining member 30. FIG. In this case, the metal fitting 50 with the hook 53 having the hook 53 can be attached to the fixing portion 11, and the reaction member 40 and the hook 53 can be connected and fastened by the bonding material 30'.

フック付き金具50は、固定部11の爪部22に係合する係合ピン52と、アーム部12の取り付けピン11aに係合する係合溝51とを有している。係合溝51は、管軸方向うに延びる溝部と切り欠き部とを有している。また、フック付き金具50は、アーム部12に外嵌するように取り付けられている。 The metal fitting 50 with a hook has an engaging pin 52 that engages with the claw portion 22 of the fixing portion 11 and an engaging groove 51 that engages with the mounting pin 11 a of the arm portion 12 . The engagement groove 51 has a groove portion and a notch portion extending in the pipe axis direction. Moreover, the metal fitting 50 with a hook is attached so as to fit on the arm portion 12 .

また、第2の管1には拡径部3と重畳しない位置に反力部材40が取り付けられている。反力部材40は、接合時の反力を取るための治具であり、連結手段としてのワイヤ41のフック部41aが取り付けられる環状部42を有している。なお、接合部材30と反力部材40とは、ワイヤ41によって連結されており、接合部材30の巻取部34によってワイヤ41を巻き取る事で、第1の管2を第2の管1に接合する。なお、ワイヤ41は、図8(b)に示すようにチェーン41´を用いても構わない。 A reaction member 40 is attached to the second pipe 1 at a position not overlapping the enlarged diameter portion 3 . The reaction member 40 is a jig for taking a reaction force at the time of joining, and has an annular portion 42 to which a hook portion 41a of a wire 41 as connecting means is attached. The joining member 30 and the reaction member 40 are connected by a wire 41. By winding the wire 41 with the winding part 34 of the joining member 30, the first pipe 2 is turned into the second pipe 1. Join. As for the wire 41, a chain 41' may be used as shown in FIG. 8(b).

図6(a)に示すように、反力部材40は、第2の管1の外周に取り付けられる一対の分割片43a、43bを互いにヒンジ44で締結して構成されている。図6(b)に示すように、第1の分割片43aは、上片45a及び上片45aの両端から垂下する一対の側
片45b,45bを有する下方向に開口した概略C字状の部材であり、第2の分割片43bは、一対の上下片46a,46a及び一対の上下片46a,46aの一端を連結する側片46bを有する横方向に開口した概略C字状の部材である。第1の分割片43aと第2の分割片43bとは、第1の分割片43aの一方の側片45bと第2の分割片43bの側片46bとがヒンジ44によって回動可能に連結されている。また、第2の分割片43bの上片46aに環状部42が取り付けられている。
As shown in FIG. 6( a ), the reaction member 40 is constructed by fastening together a pair of split pieces 43 a and 43 b attached to the outer periphery of the second pipe 1 with a hinge 44 . As shown in FIG. 6(b), the first split piece 43a is a substantially C-shaped member having an upper piece 45a and a pair of side pieces 45b, 45b hanging down from both ends of the upper piece 45a. , and the second split piece 43b is a substantially C-shaped member that is laterally open and has a pair of upper and lower pieces 46a, 46a and a side piece 46b that connects one end of the pair of upper and lower pieces 46a, 46a. The first split piece 43a and the second split piece 43b are rotatably connected by a hinge 44 to one side piece 45b of the first split piece 43a and a side piece 46b of the second split piece 43b. ing. Also, the annular portion 42 is attached to the upper piece 46a of the second split piece 43b.

このように反力部材40が構成されているので、反力部材40を第2の管1に取り付ける場合は、図6(b)に示すように、分割片を略90°の状態まで開き、第1の分割片43aの開口部分を第2の管1の外周に接するように挿入する。このとき、第2の分割片43bは、第2の管1の長手方向に沿って配置されるため、第1の分割片43aの組み付けの際に第2の管1に干渉することはない。 Since the reaction member 40 is configured in this way, when attaching the reaction member 40 to the second pipe 1, as shown in FIG. The opening portion of the first split piece 43a is inserted so as to be in contact with the outer circumference of the second pipe 1 . At this time, since the second split piece 43b is arranged along the longitudinal direction of the second pipe 1, it does not interfere with the second pipe 1 when the first split piece 43a is assembled.

その後、ヒンジ44を回動させて第2の分割片43bを図6(a)の状態となるように第1の分割片43aと略平行となるように移動させる。このとき、第2の分割片43bは、横方向に開口しているので、第2の管1の外周に沿って第2の分割片43bの開口部が移動することで、第2の分割片43bと第2の管1の外周とが干渉することはない。第2の分割片43bが図5(a)の状態まで移動すると、第1の分割片43aの開口(第2の管1の下部分)を第2の分割片43bの下片46aが閉塞することで、反力部材40を第2の管1の外周に取り付けることが可能となる。 After that, the hinge 44 is rotated to move the second split piece 43b so as to be substantially parallel to the first split piece 43a so as to be in the state shown in FIG. 6(a). At this time, since the second split piece 43b is opened in the horizontal direction, the opening of the second split piece 43b moves along the outer circumference of the second pipe 1, thereby opening the second split piece 43b. 43b and the outer circumference of the second tube 1 do not interfere. When the second split piece 43b moves to the state shown in FIG. 5(a), the opening of the first split piece 43a (lower portion of the second pipe 1) is closed by the lower piece 46a of the second split piece 43b. This makes it possible to attach the reaction member 40 to the outer circumference of the second pipe 1 .

また、反力部材40の取り外しは、第2の分割片43bを図6(b)の状態に開くことで容易に行うことができるので、第1の管2の接合後は第2の管1から容易に取り外すことができるように構成されている。 Further, the reaction member 40 can be easily removed by opening the second split piece 43b to the state shown in FIG. 6(b). It is designed so that it can be easily removed from the

次に、図9を参照して、本実施形態に係る第2の管1と第1の管2の接合方法について説明を行う。まず、第1の管2に固定部11を取り付けて固定する(S101)。固定部11の取り付けは、新設管の敷設を行う現場で行っても構わないし、新設管(第1の管2)の製造時に工場で取り付けても構わない。 Next, a method for joining the second pipe 1 and the first pipe 2 according to this embodiment will be described with reference to FIG. First, the fixing part 11 is attached and fixed to the first pipe 2 (S101). The fixing part 11 may be attached at the site where the new pipe is laid, or may be attached at the factory when the new pipe (first pipe 2) is manufactured.

その後、アーム部12を固定部11に取り付ける(S102)。具体的には、アーム部12の着脱部20の係合部21に固定部11の軸部23aを係合させ、爪部22で軸部23aを固定する。このとき、爪部22は図示しないバネによって軸部23aの方向に付勢されているので、爪部22を軸部23aへの付勢側と逆方向にバネ力に抗して退避させることで、係合部21に軸部23aを係合させることができる。 After that, the arm portion 12 is attached to the fixed portion 11 (S102). Specifically, the shaft portion 23 a of the fixing portion 11 is engaged with the engaging portion 21 of the attaching/detaching portion 20 of the arm portion 12 , and the shaft portion 23 a is fixed by the claw portion 22 . At this time, since the claw portion 22 is biased in the direction of the shaft portion 23a by a spring (not shown), the claw portion 22 is retracted against the spring force in the direction opposite to the biasing side of the shaft portion 23a. , the shaft portion 23 a can be engaged with the engaging portion 21 .

次に、アーム部12を取り付けた第1の管2の挿し口4の外周及び敷設済みの第2の管1の受け口3a内にセットされたシール用ゴム輪(図示せず)の内周に滑剤を塗布した後、第1の管2を掘削溝内にクレーンなどによって吊下げて下ろし、アーム部12の当接部13を掘削溝内に敷設された第2の管1の拡径部3に当接させる。このとき、当接部13は、拡径部3の基端側から第1の管2側にはみ出すように挿入代部分15を有するように配置される。この拡径部3と当接部13との当接によって第2の管1と第1の管2の芯出しを行うことができる。 Next, on the outer periphery of the insertion port 4 of the first pipe 2 to which the arm portion 12 is attached and on the inner periphery of the sealing rubber ring (not shown) set in the receptacle 3a of the second pipe 1 that has already been laid. After applying the lubricant, the first pipe 2 is suspended by a crane or the like in the excavated trench, and the contact portion 13 of the arm portion 12 is attached to the enlarged diameter portion 3 of the second pipe 1 laid in the excavated trench. abut on. At this time, the contact portion 13 is arranged so as to have an insertion allowance portion 15 so as to protrude from the base end side of the enlarged diameter portion 3 toward the first tube 2 side. The centering of the second pipe 1 and the first pipe 2 can be performed by the contact between the enlarged diameter portion 3 and the contact portion 13 .

次に、第2の管1の拡径部3と重畳しない位置に反力部材40を取り付ける(S104)。この反力部材40の取り付けは、当接部13を拡径部3に当接させる工程(S103)の前に行っても構わない。 Next, the reaction member 40 is attached at a position that does not overlap the enlarged diameter portion 3 of the second pipe 1 (S104). The attachment of the reaction member 40 may be performed before the step of bringing the contact portion 13 into contact with the enlarged diameter portion 3 (S103).

次に、第2の管1及び第1の管2に接合部材30を取り付ける(S105)。具体的には、第1の管2の固定部11に接合部材30の係合爪31を係合させ、一対の腕部16の
間に接合部材30を保持する。また、反力部材40の環状部42にワイヤ41のフック部41aを取り付ける。
Next, the joining member 30 is attached to the second pipe 1 and the first pipe 2 (S105). Specifically, the engaging claws 31 of the joint member 30 are engaged with the fixed portion 11 of the first pipe 2 to hold the joint member 30 between the pair of arm portions 16 . Also, the hook portion 41 a of the wire 41 is attached to the annular portion 42 of the reaction member 40 .

次に、接合部材30の操作部32aを電動工具などで回転操作して、ワイヤ41を巻き取ることで、反力部材40が拡径部3との段差に係止し、その反力によって第1の管2を第2の管1の受け口3a内に挿入して嵌合させる(S106)。このとき、接合部材30を用いずに図8(b)に示すような従来周知のラチェット構造を有する接合用機材を用いても構わない。 Next, by rotating the operation portion 32a of the joining member 30 with an electric tool or the like and winding the wire 41, the reaction member 40 is locked to the step with the enlarged diameter portion 3, and the reaction force causes the second rotation. One tube 2 is inserted into the socket 3a of the second tube 1 and fitted (S106). At this time, instead of using the joining member 30, a joining material having a conventionally known ratchet structure as shown in FIG. 8B may be used.

第1の管2の嵌合が終了した後、アーム部12,接合部材30及び反力部材40を取り外す(S107~S109)。なお、アーム部12,接合部材30及び反力部材40の取り外し順は、図9に示す順に限らず、順番は問わない。また、固定部11も同時に取り外しても構わないが、第1の管2に取り付けたまま埋設しても構わない。 After the fitting of the first tube 2 is completed, the arm portion 12, the joint member 30 and the reaction member 40 are removed (S107-S109). The order of removal of the arm portion 12, the joining member 30 and the reaction member 40 is not limited to the order shown in FIG. 9, and the order does not matter. Moreover, although the fixing part 11 may be removed at the same time, it may be buried while attached to the first pipe 2 .

その後、第2の管1と第1の管2の接合状態をチェックゲージなどで確認した後、当該第1の管2が既に敷設済みの第2の管となって次の第1の管の接合作業を行い、必要な新設管の敷設長さが得られるまで当該工程を繰り返すことで、新設管の敷設を完了する。 After that, after confirming the joint state of the second pipe 1 and the first pipe 2 with a check gauge or the like, the first pipe 2 becomes the already laid second pipe and the next first pipe By performing joining work and repeating the process until the necessary length of new pipe is obtained, the laying of the new pipe is completed.

このように、本実施形態に係る接合方法及び接合部材によれば、当接部13を拡径部3に当接させるだけで第2の管1と第1の管2の芯出しを行うことができるので、芯出し位置決め作業を容易に行うことができると共に、作業員の熟練度に左右されずに掘削溝内での作業時間を短縮することができる。また、接合部材30の操作部を電動工具などで操作するだけで、容易に第2の管1と第1の管2の接合を行うことができる。 As described above, according to the joining method and the joining member according to the present embodiment, the centering of the second pipe 1 and the first pipe 2 can be performed only by bringing the contact portion 13 into contact with the enlarged diameter portion 3. Therefore, the centering and positioning work can be easily performed, and the working time in the excavated trench can be shortened regardless of the skill level of the workers. In addition, the second pipe 1 and the first pipe 2 can be easily joined simply by operating the operation portion of the joining member 30 with an electric tool or the like.

[第2の実施形態]
以上説明した第1の実施形態に係る接合方法に用いられる芯出し部材は、アーム部と固定部とを有し、反力部材を用いて接合部材によって接合する場合について説明を行った。次に説明する第2の実施形態に係る接合方法に用いられる芯出し部材は、第1の実施形態と異なる形態を有するアーム部、固定部及び反力部材について説明を行うものである。なお、上述した第1の実施形態の場合と同一又は類似する部材については、同一符号を付して詳細な説明を省略する。
[Second embodiment]
The case where the centering member used in the joining method according to the first embodiment described above has an arm portion and a fixed portion and is joined by a joining member using a reaction member has been described. The centering member used in the joining method according to the second embodiment described below describes an arm portion, a fixing portion, and a reaction member having different forms from those of the first embodiment. Members that are the same as or similar to those in the first embodiment described above are denoted by the same reference numerals, and detailed description thereof will be omitted.

図10は、本発明の第2の実施形態に係る接合方法に用いられる芯出し部材のアーム部の斜視図であり、図11は、本発明の第2の実施形態に係る接合方法に用いられる芯出し部材の固定部の斜視図であり、図12は、本発明の第2の実施形態に係る接合方法に用いられる芯出し部材の固定部の変形例を示す斜視図であり、図13は、本発明の第2の実施形態に係る接合方法に用いられる芯出し部材と共に用いられる反力部材の斜視図であり、図14は、本発明の第2の実施形態に係る接合方法に用いられる芯出し部材と伴い用いられる反力部材の斜視図であり、図15は、本発明の第2の実施形態に係る接合部材の斜視図である。 FIG. 10 is a perspective view of an arm portion of a centering member used in the joining method according to the second embodiment of the present invention, and FIG. 11 is a perspective view of the arm portion used in the joining method according to the second embodiment of the present invention. FIG. 12 is a perspective view of a fixing portion of the centering member, FIG. 12 is a perspective view showing a modification of the fixing portion of the centering member used in the joining method according to the second embodiment of the present invention, and FIG. 14 is a perspective view of a reaction force member used together with a centering member used in the joining method according to the second embodiment of the present invention, and FIG. 14 is a perspective view of the reaction force member used in the joining method according to the second embodiment of the present invention; FIG. 15 is a perspective view of a reaction member used with the centering member, and FIG. 15 is a perspective view of a joining member according to a second embodiment of the present invention;

図10に示すように、本実施形態に係る接合方法に用いられるアーム部62は、基端側に着脱部20が形成される。また、アーム部62は、着脱部20から長手方向に沿って略平行に延びる一対の腕部16、16と、一対の腕部16、16の先端側に形成された当接部13とを備えている。一対の腕部16は、第1の実施形態に係る接合方法に用いられる芯出し部材と同様に、当接部13と拡径部3とが確実に当接するように上側に凸となるように湾曲している。 As shown in FIG. 10, the detachable portion 20 is formed on the base end side of the arm portion 62 used in the joining method according to the present embodiment. Further, the arm portion 62 includes a pair of arm portions 16, 16 extending substantially in parallel along the longitudinal direction from the attachment/detachment portion 20, and a contact portion 13 formed on the tip side of the pair of arm portions 16, 16. ing. The pair of arm portions 16 are arranged so as to protrude upward so that the contact portion 13 and the diameter-enlarging portion 3 are reliably brought into contact with each other, similarly to the centering member used in the joining method according to the first embodiment. curved.

一対の腕部16、16は、所定の空隙Sを有して配置されており、先端部が互いに補強部17によって連結されている。また、必要に応じて腕部16の中間部分にも補強部を設けても構わない。腕部16の先端には、一対の腕部16のそれぞれから互いに離間する方向に延びる当接部鍔部63が形成されている。また、当接部鍔部63は、拡径部3に当接する羽部材64が取り付けられており、羽部材64は、補強部17に取付けられた調整手段としての調整ねじ65に取付けられ、拡径部3に対して近接・離間可能に取付られている。 A pair of arm portions 16 , 16 are arranged with a predetermined gap S, and their distal ends are connected to each other by reinforcing portions 17 . Also, a reinforcing portion may be provided in the intermediate portion of the arm portion 16 as necessary. Abutment flanges 63 are formed at the distal ends of the arms 16 and extend from each of the pair of arms 16 in a direction away from each other. Further, the abutment flange 63 is attached with a wing member 64 that abuts on the enlarged diameter portion 3, and the wing member 64 is attached to an adjusting screw 65 as adjusting means attached to the reinforcing portion 17 to expand. It is attached so as to be able to approach and separate from the diameter portion 3 .

羽部材64は、当接部鍔部63に対応する羽部材本体64aと、調整ねじ65が螺合する連結部64bを備えている。なお、羽部材本体64aは、当接部鍔部63に挿通されたボルト・ナット64cによって当接部鍔部63から脱落しないように取り付けられている。このように、当接部13が拡径部3に対して近接・離間することができる羽部材64と調整手段65を有しているので、第2の管1と第1の管2のサイズが異なる場合であっても、種々のサイズの管に対応することができる。 The feather member 64 includes a feather member main body 64a corresponding to the abutting collar portion 63 and a connecting portion 64b with which the adjusting screw 65 is screwed. The feather member main body 64a is attached to the contact portion collar portion 63 by a bolt/nut 64c inserted through the contact portion collar portion 63 so as not to fall off. As described above, since the contact portion 13 has the feather member 64 and the adjustment means 65 that can be moved toward and away from the enlarged diameter portion 3, the sizes of the second pipe 1 and the first pipe 2 are adjusted. Different sizes of tubes can be accommodated, even if the .

また、アーム部62の先端側には、一対の腕部16のそれぞれから互いに離間する方向に延びる手持ち部66が形成されている。また、手持ち部66は、アーム部62の先端側において、一対の腕部16,16の間を連結している。このような手持ち部66を備えることで、安全に管の誘導や芯出しを行うことができる。 A hand-holding portion 66 is formed on the distal end side of the arm portion 62 and extends from each of the pair of arm portions 16 in a direction away from each other. Also, the hand-held portion 66 connects the pair of arm portions 16 , 16 on the distal end side of the arm portion 62 . By providing such a hand-held portion 66, it is possible to safely guide and center the pipe.

図11に示すように、固定部61は、一対の固定部分割片61a,61aを互いに組み合わせて構成されている。固定部分割片61aは、第1の管2の挿し口4の外周に対応して湾曲した固定部分割片本体61bと、固定部分割片本体61bの両端にそれぞれ形成された第1の鍔部67及び第2の鍔部68とを有している。 As shown in FIG. 11, the fixing portion 61 is constructed by combining a pair of fixing portion split pieces 61a, 61a. The fixed portion split piece 61a includes a fixed portion split piece main body 61b curved corresponding to the outer circumference of the insertion port 4 of the first pipe 2, and first flanges formed on both ends of the fixed portion split piece main body 61b. 67 and a second collar portion 68 .

第1の鍔部67及び第2の鍔部68は、径方向に突出して形成されており、固定部分割片61a同士を固定するボルト・ナットが挿通されるボルト孔71が形成されている。また、第2の鍔部68には、他方の固定部分割片61aに向けて突出するピン部69が形成されており、第1の鍔部67は、ピン部69と対応する位置に、当該ピン部69が挿入可能なピン孔70が形成されている。なお、第1の鍔部67及び第2の鍔部68の詳細な形状は、上述した第1の実施形態に係る接合方法に用いられる芯出し部材10の固定部11に形成された鍔部26と同様であるので、詳細な説明は省略する。 The first brim portion 67 and the second brim portion 68 are formed to protrude in the radial direction, and are formed with bolt holes 71 through which bolts and nuts for fixing the fixed portion segments 61a are inserted. A pin portion 69 is formed on the second flange portion 68 and protrudes toward the other fixed portion divided piece 61a. A pin hole 70 into which the pin portion 69 can be inserted is formed. The detailed shapes of the first flange portion 67 and the second flange portion 68 are the same as the flange portion 26 formed on the fixed portion 11 of the centering member 10 used in the joining method according to the first embodiment. , so detailed description is omitted.

このように、本実施形態に係る接合方法に用いられる固定部61は、一方の固定部分割片61aのピン部69を他方の固定部分割片61aのピン孔70に挿入して互いに位置を固定し、ボルト孔71に図示しないボルトを挿通してナットで固定することで第1の管2の挿し口4に取り付けることが出来る。また、本実施形態に係る接合方法に用いられる固定部61は、第1の管2の径方向に分割可能であることから、取り付け及び取り外し作業を省スペースで行うことができる。 In this manner, the fixing portion 61 used in the joining method according to the present embodiment is fixed in position by inserting the pin portion 69 of one of the fixing portion split pieces 61a into the pin hole 70 of the other fixing portion split piece 61a. Then, by inserting a bolt (not shown) into the bolt hole 71 and fixing it with a nut, it can be attached to the insertion port 4 of the first pipe 2 . In addition, since the fixing portion 61 used in the joining method according to the present embodiment can be divided in the radial direction of the first pipe 2, installation and removal operations can be performed in a space-saving manner.

また、本実施形態に係る接合方法に用いられる固定部61は、第1の鍔部67及び第2の鍔部68が組み合わされてなる鍔部72が図11における上下に一対形成されている。このように、アーム部62の着脱部20が係合及び固定可能な鍔部72が上下に形成されることで、敷設済みの管の挿し口に新設管の受け口を接合する場合には、図15に示すように、下側の鍔部72にアーム部62を取り付けることで、対応することができる。 In addition, the fixing portion 61 used in the joining method according to the present embodiment has a pair of upper and lower flanges 72 formed by combining a first flange 67 and a second flange 68 in FIG. In this way, by forming the upper and lower collar portions 72 that can be engaged and fixed by the detachable portion 20 of the arm portion 62, when joining the receptacle of a new pipe to the receptacle of a pipe that has already been laid, 15, by attaching the arm portion 62 to the lower collar portion 72, it is possible to cope with this.

本実施形態に係る接合方法に用いられる固定部61は、上述したように固定部分割片61aをボルト・ナットで固定する完全分離型でも構わないが、図12に示すように、変形例として、一対の固定部分割片61cをボールジョイント73で回転自在に組み付け、一方の固定部分割片61cに取り付けたヒンジ部74を他方の固定部分割片61cに取り付けたヒンジ係止部75に係合させて互いに固定した固定部61´としても構わない。この際、ヒンジ部74に取り付けた固定ボルト76によってヒンジ部74とヒンジ係止部75とを固定することで、ヒンジ部74とヒンジ係止部75の固定が解除されることを防止している。 The fixing part 61 used in the joining method according to the present embodiment may be of a completely separated type in which the fixing part split pieces 61a are fixed with bolts and nuts as described above. A pair of fixed portion split pieces 61c are rotatably assembled with a ball joint 73, and a hinge portion 74 attached to one fixed portion split piece 61c is engaged with a hinge locking portion 75 attached to the other fixed portion split piece 61c. It is also possible to use a fixed portion 61' that is fixed to each other. At this time, by fixing the hinge portion 74 and the hinge locking portion 75 with a fixing bolt 76 attached to the hinge portion 74, the fixation of the hinge portion 74 and the hinge locking portion 75 is prevented from being released. .

また、本変形例に係る接合方法に用いられる固定部61´は、上述した固定部61と同様に上下に一対の鍔部72が形成されているが、当該鍔部72は、固定部分割片61cの概略中央部分に形成されており、鍔部72,ヒンジ部74,鍔部72及びヒンジ係止部75が周方向に略等間隔に配置されていると好適である。 Further, the fixing portion 61' used in the joining method according to this modified example has a pair of upper and lower flange portions 72 formed in the same manner as the fixing portion 61 described above. 61c, and preferably, the collar portion 72, the hinge portion 74, the collar portion 72, and the hinge locking portion 75 are arranged at substantially equal intervals in the circumferential direction.

図13及び図14に示すように、反力部材80は、概略コ字状に形成された第1の反力部材片81と概略コ字状に形成された第2の反力部材片82とが、ヒンジ83を介して開閉自在に取り付けられている。 As shown in FIGS. 13 and 14, the reaction member 80 includes a first reaction member piece 81 formed in a substantially U shape and a second reaction member piece 82 formed in a substantially U shape. is attached via a hinge 83 so as to be openable and closable.

図13に示すように、第1の反力部材片81は、下方に開口するように配置されており、第1の反力部材片本体81aと、当該第1の反力部材片本体81aの両端から垂下して延設される第1の側方脚部81b及び第2の側方脚部81cとを有している。第1の反力部材片本体81aの概略中央部には、長孔状のガイド孔88aと、第1の側方脚部81b及び第2の側方脚部81cの延設方向と概略直交する方向に延びる第1の把持部87が形成されている。 As shown in FIG. 13, the first reaction member piece 81 is arranged so as to open downward. It has a first lateral leg portion 81b and a second lateral leg portion 81c extending downwardly from both ends. An elongated guide hole 88a and an extending direction of the first side leg portion 81b and the second side leg portion 81c are substantially perpendicular to each other in the substantially central portion of the first reaction member piece main body 81a. A first gripping portion 87 extending in the direction is formed.

図14に示すように、第2の反力部材片82は、側方に開口するように配置されており、第2の反力部材片本体82aと、当該第2の反力部材片本体82aの両端から直交して延設される上方脚部82b及び下方脚部82cとを有している。下方脚部82cは、上述した第1の把持部87と対向する第2の把持部89が形成されている。 As shown in FIG. 14, the second reaction force member piece 82 is arranged so as to open sideways. It has an upper leg portion 82b and a lower leg portion 82c extending orthogonally from both ends thereof. The lower leg portion 82c is formed with a second gripping portion 89 facing the first gripping portion 87 described above.

上方脚部82bの概略中央部には、上方脚部82b及び下方脚部82cの延設方向と概略直交する方向に延びる支持台86が形成されている。支持台86は、枢軸84aを介して枢動するフック受け部材84が取り付けられており、フック受け部材84は、弾性体85によって枢軸84aの周方向に付勢されている。 A support base 86 extending in a direction substantially orthogonal to the extending direction of the upper leg portion 82b and the lower leg portion 82c is formed at the approximate center portion of the upper leg portion 82b. A hook receiving member 84 that pivots via a pivot 84a is attached to the support base 86, and the hook receiving member 84 is biased by an elastic body 85 in the circumferential direction of the pivot 84a.

図13に示すように、フック受け部材84は、弾性体85によって枢軸84a周りに付勢され、第1の反力部材片本体81aの上端に当接して第2の反力部材片82を上方に付勢している。第2の反力部材片82は、第2の反力部材片82の上方脚部82bに形成されたガイドピン88と、第1の反力部材片本体81aに形成された長孔状のガイド孔88aによって上下方向に案内されている。 As shown in FIG. 13, the hook receiving member 84 is urged around the pivot 84a by the elastic body 85, contacts the upper end of the first reaction member piece main body 81a, and pushes the second reaction member piece 82 upward. is biased toward The second reaction member piece 82 includes a guide pin 88 formed on the upper leg portion 82b of the second reaction member piece 82 and an elongated guide hole formed on the first reaction member piece main body 81a. It is guided vertically by the hole 88a.

なお、第1の反力部材片81の第1の側方脚部81bと第2の反力部材片82の第2の反力部材片本体82aは、ヒンジ83を介して開閉自在に取り付けられているが、当該ヒンジ83は、フック受け部材84による第2の反力部材片82の上下方向への移動を許容する程度にガタを有している。 The first side leg portion 81b of the first reaction member piece 81 and the second reaction member piece main body 82a of the second reaction member piece 82 are attached via a hinge 83 so as to be openable and closable. However, the hinge 83 has enough play to allow the second reaction member piece 82 to move vertically by the hook receiving member 84 .

このように、反力部材80は、フック受け部材84によって第2の反力部材片82が下上方に付勢されているので、第1の把持部87と第2の把持部89とが互いに近接して第1の管2の外周を挟み込み反力部材80のズレを防止することができる。 In this manner, the second reaction member piece 82 of the reaction member 80 is urged downward and upward by the hook receiving member 84, so that the first gripping portion 87 and the second gripping portion 89 are held together. It is possible to prevent displacement of the reaction member 80 by sandwiching the outer periphery of the first tube 2 in close proximity.

次に、図15を参照して本実施形態に係る接合方法に用いられる芯出し部材10´の芯出し部材10´の接合方法について説明を行う。図15に示すように、埋設管である第2の管1の挿し口4に固定部61を取り付ける。また、下方の72にアーム部62を取り付ける。このとき、アーム部62の当接部13は、上方を向くように、第1の実施形態に係る接合方法に用いられる芯出し部材10とは天地逆転して取り付けられる。また、必要に応じて羽部材64の位置を調整して第2の管1と第1の管2の位置を微調整する。さらに、固定部61の上方の鍔部72には、接合部材30を取り付ける。アーム部62及び接合部材30の取り付け方法は、上述した第1の実施形態に係る接合方法に用いられる芯出し部材10と同様であるので、詳細な説明は省略する。 Next, a joining method of the centering member 10' used in the joining method according to the present embodiment will be described with reference to FIG. As shown in FIG. 15, a fixing portion 61 is attached to the insertion opening 4 of the second pipe 1, which is an embedded pipe. Also, the arm portion 62 is attached to the lower portion 72 . At this time, the contact portion 13 of the arm portion 62 is mounted upside down from the centering member 10 used in the joining method according to the first embodiment so that the contact portion 13 faces upward. Further, the positions of the second pipe 1 and the first pipe 2 are finely adjusted by adjusting the position of the feather member 64 as necessary. Furthermore, the joining member 30 is attached to the flange portion 72 above the fixed portion 61 . The method of attaching the arm portion 62 and the joining member 30 is the same as that of the centering member 10 used in the joining method according to the first embodiment described above, so detailed description thereof will be omitted.

反力部材80は、第1の管2の拡径部3と重畳しない位置に取り付けられ、フック受け部材84に接合部材30から延びるチェーン41´の先端に形成されたフック部41aを係合する。その後、接合部材30を操作してチェーン41´を巻き取り、第1の管2の受け口3aを第2の管1の挿し口4に挿入して第1の管2と第2の管1を接合する。また、チェーン41´の巻き取りによって、フック受け部材84は、枢軸84a周りに枢動することから、反力部材80はより強固に第1の管2の外周に固着される。 The reaction member 80 is attached at a position not overlapping the enlarged diameter portion 3 of the first pipe 2 , and engages the hook portion 41 a formed at the tip of the chain 41 ′ extending from the joint member 30 to the hook receiving member 84 . . After that, the joining member 30 is operated to wind the chain 41', and the socket 3a of the first pipe 2 is inserted into the insertion port 4 of the second pipe 1 to connect the first pipe 2 and the second pipe 1. Join. Moreover, since the hook receiving member 84 pivots around the pivot 84a by winding the chain 41', the reaction member 80 is more firmly fixed to the outer circumference of the first pipe 2. As shown in FIG.

このように、本実施形態に係る接合方法に用いられる芯出し部材10´によれば、固定部61の着脱が容易になるので、固定部61を埋設することなく繰り返し使用することが出来るため、コスト抑制を図ることができる。 As described above, according to the centering member 10' used in the joining method according to the present embodiment, the attachment and detachment of the fixing portion 61 is facilitated. Cost can be suppressed.

なお、以上の第1の実施形態では、接合部材30は、歯車33とウォームギヤ32とで構成した場合について説明を行ったが、歯車33を複数設けても構わないし、ウォームギヤ32を削除して直接歯車33を操作するように構成しても構わない。 In the above-described first embodiment, the joint member 30 is configured by the gear 33 and the worm gear 32. However, a plurality of the gears 33 may be provided, and the worm gear 32 may be deleted and directly It may be configured to operate the gear 33 .

また、第1の実施形態に係る芯出し部材は、既に敷設済みの第2の管1の受け口3aに第1の管2の挿し口4を接合する場合について説明を行ったが、第2の実施形態に係る接合方法に用いられる芯出し部材のように、既に敷設済みの管の挿し口に新設管の受け口を接合しても構わない。この場合、既に敷設済みの管にアーム部12を当接部13が上を向くように取り付け、クレーンなどによって吊下げられる管の拡径部を当接させるように構成することで、管同士の芯出しを行うことができる。また、第2の実施形態に係る接合方法に用いられる固定部の変形例として、一対の固定部分割片61cをボールジョイント73で回転自在に組み付けた固定部61´について説明を行ったが、一対の固定部分割片61cをユニバーサルジョイントを用いて回転自在に組みつけても構わない。その様な変更又は改良を加えた形態も本発明の技術的範囲に含まれうることが、特許請求の範囲の記載から明らかである。 Further, the centering member according to the first embodiment has been described in the case of joining the insertion port 4 of the first pipe 2 to the socket 3a of the second pipe 1 that has already been laid. As with the centering member used in the joining method according to the embodiment, the receptacle of the new pipe may be joined to the insertion port of the pipe that has already been laid. In this case, the arms 12 are attached to the pipes that have already been laid so that the abutting portions 13 face upward, and the enlarged diameter portions of the pipes that are suspended by a crane or the like are brought into contact with each other. Centering can be performed. Also, as a modified example of the fixing portion used in the joining method according to the second embodiment, the fixing portion 61' in which the pair of fixing portion divided pieces 61c are rotatably assembled by the ball joint 73 has been described. The fixed part segment 61c may be rotatably assembled using a universal joint. It is clear from the description of the scope of claims that forms with such modifications or improvements can also be included in the technical scope of the present invention.

1 第2の管
2 第1の管
3 拡径部
3a 受け口(内径部)
4 挿し口(挿入部)
10,10´ 芯出し部材
11,61 固定部
12,62 アーム部
13 当接部
14 当接部分
15 挿入代部分
16 腕部
17 補強部
20 着脱部
21 係合部
22 爪部
23 ボルト
23a 軸部
24 接合部材取付部
25 バンド本体
26,72 鍔部
30 接合部材
31 係合爪
32 ウォームギヤ
32a 操作部
33 歯車
34 巻取部
40,80 反力部材
41 ワイヤ
41´ チェーン
41a フック部
42 環状部
43a 第1の分割片
43b 第2の分割片
44 ヒンジ
50 フック付き金具
51 係合溝
52 係合ピン
53 フック
61a 固定部分割片
61b 固定部分割片本体
63 当接部鍔部
64 羽部材
64a 羽部材本体
64b 連結部
64c ボルト・ナット
65 調整ねじ(調整手段)
66 手持ち部
67 第1の鍔部
68 第2の鍔部
69 ピン部
70 ピン孔
71 ボルト孔
73 ボールジョイント
74 ヒンジ部
75 ヒンジ係止部
81 第1の反力部材片
82 第2の反力部材片
83 ヒンジ
84 フック受け部材
84a 枢軸
85 弾性体
86 支持台
87 第1の把持部
88 ガイドピン
89 第2の把持部
S 空隙


REFERENCE SIGNS LIST 1 second pipe 2 first pipe 3 expanded diameter portion 3a socket (inner diameter portion)
4 insertion port (insertion part)
Reference Signs List 10, 10' Centering member 11, 61 Fixing part 12, 62 Arm part 13 Contact part 14 Contact part 15 Insertion allowance part 16 Arm part 17 Reinforcement part 20 Detachable part 21 Engagement part 22 Claw part 23 Bolt 23a Shaft part 24 Joining member attaching portion 25 Band main body 26, 72 Collar portion 30 Joining member 31 Engaging claw 32 Worm gear 32a Operating portion 33 Gear 34 Winding portion 40, 80 Reaction member 41 Wire 41' Chain 41a Hook portion 42 Annular portion 43a First split piece 43b Second split piece 44 Hinge 50 Metal fitting with hook 51 Engagement groove 52 Engagement pin 53 Hook 61a Fixed part split piece 61b Fixed part split piece main body 63 Contact part flange 64 Wing member 64a Wing member main body 64b connecting portion 64c bolt/nut 65 adjusting screw (adjusting means)
66 hand-held portion 67 first flange portion 68 second flange portion 69 pin portion 70 pin hole 71 bolt hole 73 ball joint 74 hinge portion 75 hinge locking portion 81 first reaction member piece 82 second reaction member piece 83 hinge 84 hook receiving member 84a pivot 85 elastic body 86 support base 87 first gripping portion 88 guide pin 89 second gripping portion S space


Claims (6)

第1の管と、前記第1の管が内径部に挿入されると共に、前記第1の管の挿入部の外径よりも大きく形成された拡径部が形成された第2の管との接合方法であって、
第1の管に固定部を固定する工程と、
前記固定部に第2の管の方向に突出するアーム部を取り付ける工程と、
前記アーム部に形成された当接部を前記拡径部に前記拡径部の端部から前記当接部が前記第2の管の方向にはみ出すように当接させる工程と、
前記第1の管に反力部材を取り付ける工程と、
前記固定部に接合部材を取り付ける工程と、
前記接合部材を操作して第2の管を前記内径部に挿入する工程と、
を備えることを特徴とする接合方法。
A first tube and a second tube having an enlarged diameter portion larger than the outer diameter of the insertion portion of the first tube, the first tube being inserted into the inner diameter portion. A joining method comprising:
a step of securing the securing portion to the first tube;
A step of attaching an arm portion projecting in the direction of the second pipe to the fixing portion;
a step of bringing the contact portion formed on the arm portion into contact with the enlarged diameter portion so that the contact portion protrudes from the end portion of the enlarged diameter portion toward the second pipe;
attaching a reaction member to the first tube;
a step of attaching a joining member to the fixing portion;
manipulating the joining member to insert a second tube into the inner diameter;
A joining method comprising:
請求項1に記載の接合方法において、
前記第2の管を前記内径部に挿入した後、前記アーム部を取り外す工程を備えることを特徴とする接合方法。
In the joining method according to claim 1,
A joining method comprising a step of removing the arm portion after inserting the second pipe into the inner diameter portion.
請求項1または2に記載の接合方法において、
前記第2の管を前記内径部に挿入した後、前記接合部材を取り外す工程を備えることを特徴とする接合方法。
In the joining method according to claim 1 or 2,
A joining method comprising a step of removing the joining member after inserting the second pipe into the inner diameter portion.
請求項1から3のいずれか1項に記載の接合方法において、
前記第2の管を前記内径部に挿入した後、前記反力部材を取り外す工程を備えることを特徴とする接合方法。
In the joining method according to any one of claims 1 to 3,
A joining method, comprising a step of removing the reaction force member after inserting the second pipe into the inner diameter portion.
第1の管と、前記第1の管が内径部に挿入されると共に、前記第1の管の挿入部の外径よりも大きく形成された拡径部が形成された第2の管との接合に用いられる接合部材であって、
第1の管に固定される固定部と、係合可能な係合爪と、
前記第2の管に取り付けられた反力部材と連結手段によって連結される連結部と、
前記連結部を操作して前記連結手段を巻き取る巻取部と、を備えることを特徴とする接合部材。
A first tube and a second tube having an enlarged diameter portion larger than the outer diameter of the insertion portion of the first tube, the first tube being inserted into the inner diameter portion. A joining member used for joining,
a fixing portion fixed to the first pipe; an engaging pawl that can be engaged;
a connecting portion connected by a connecting means to the reaction force member attached to the second pipe;
and a winding section that operates the connecting section to wind the connecting means.
請求項5に記載の接合部材において、
前記巻取部は、電動工具によって操作可能な操作部を備えることを特徴とする接合部材。

The joining member according to claim 5,
The joining member, wherein the winding section includes an operation section that can be operated by an electric tool.

JP2022015932A 2021-10-19 2022-02-03 Joining method and joining member Pending JP2023061344A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021170725 2021-10-19
JP2021170725 2021-10-19

Publications (1)

Publication Number Publication Date
JP2023061344A true JP2023061344A (en) 2023-05-01

Family

ID=86239141

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
JP (1) JP2023061344A (en)

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