JP6536292B2 - Screw tightening device and method of manufacturing pipe connector - Google Patents

Screw tightening device and method of manufacturing pipe connector Download PDF

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JP6536292B2
JP6536292B2 JP2015168630A JP2015168630A JP6536292B2 JP 6536292 B2 JP6536292 B2 JP 6536292B2 JP 2015168630 A JP2015168630 A JP 2015168630A JP 2015168630 A JP2015168630 A JP 2015168630A JP 6536292 B2 JP6536292 B2 JP 6536292B2
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steel pipe
torque
pipe
traveling body
guide
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JP2017044012A (en
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真 荒川
真 荒川
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Obayashi Corp
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Description

本発明は、軸方向に並べられる一対の管の端部にそれぞれ設けられた雄ねじ部と雌ねじ部をねじ締めするねじ締め装置に関するとともに、そのねじ締め装置を用いた管連結体の製造方法に関する。   The present invention relates to a screw tightening device for screwing male and female screw portions respectively provided at ends of a pair of tubes arranged in an axial direction, and relates to a method for manufacturing a pipe connector using the screw tightening device.

特許文献1には、一方の鋼管の端部に設けられた雄ねじ部を他方の鋼管の端部に設けられた雌ねじ部に締める装置が開示されている。この装置は、牽引装置と、その牽引装置から繰り出されて一方の鋼管の外周面に巻き付けられた索状体と、を備えるものである。牽引装置によって索状体を巻回することによって一方の鋼管を回転し、これにより雄ねじ部と雌ねじ部を螺合する。   Patent Document 1 discloses an apparatus for tightening an external thread portion provided at an end of one steel pipe to an internal thread portion provided at an end of the other steel pipe. This device comprises a traction device and a cord-like body which is unwound from the traction device and wound around the outer circumferential surface of one steel pipe. One of the steel pipes is rotated by winding the cord-like body by the pulling device, and thereby the male screw portion and the female screw portion are screwed together.

特開2013−174088号公報JP, 2013-174088, A

ところで、鋼管の重量が大きい上、雄ねじ部と雌ねじ部の摩擦が大きいので、鋼管を回転させるには大きなトルクを必要とする。ところが、特許文献1に記載の装置では、索状体が鋼管の外周に巻き付けられているので、鋼管に与えられるトルクは牽引装置の牽引力と鋼管の半径の積であり、鋼管を回転させるために牽引装置の牽引力を高めなければならかった。牽引装置の牽引力を高めると、牽引装置が大型化してしまうので、鋼管の周りの作業スペースが狭いと、作業員が作業を行いづらいうえ、作業員の人数を増やしづらかった。   By the way, since the weight of the steel pipe is large and the friction between the male screw part and the female screw part is large, a large torque is required to rotate the steel pipe. However, in the device described in Patent Document 1, since the cord-like body is wound around the outer circumference of the steel pipe, the torque given to the steel pipe is the product of the traction force of the traction device and the radius of the steel pipe. I had to increase the traction of the traction device. When the pulling force of the pulling device is increased, the pulling device becomes large. Therefore, when the work space around the steel pipe is narrow, it is difficult for the workers to work and it is difficult to increase the number of workers.

本発明は、上記事情に鑑みてなされたものである。本発明が解決しようとする課題は、雄ねじ部及び雌ねじ部がそれぞれ設けられた端部に設けられた管同士を省力的に締め付けられるようにすることである。   The present invention has been made in view of the above circumstances. The problem to be solved by the present invention is to make it possible to force-tighten the pipes provided at the ends provided with the male screw part and the female screw part respectively.

以上の課題を解決するべく、軸方向に並べられる一対の管の端部にそれぞれ設けられた雄ねじ部と雌ねじ部をねじ締めするねじ締め装置が、前記一対の管のうち一方の管を囲うように環状に設けられたガイドと、前記ガイドに沿って走行可能な走行体と、前記走行体から軸方向に沿って他方の管側へ延出したトルク付与部と、前記一方の管の外周面から径方向外側に延出し、前記走行体の走行に伴うトルクを前記トルク付与部から受けるトルク受け部と、を備える。   In order to solve the above problems, a screw tightening device for screwing a male screw portion and a female screw portion respectively provided at ends of a pair of tubes arranged in the axial direction encloses one of the pair of tubes. A guide provided annularly, a traveling body capable of traveling along the guide, a torque applying portion extending from the traveling body to the other pipe side along the axial direction, and an outer peripheral surface of the one pipe And a torque receiving portion for receiving torque from the torque applying portion along with traveling of the traveling body.

また、軸方向に並べられる一対の管の端部にそれぞれ雄ねじ部と雌ねじ部をねじ締めすることによって、前記管の連結体を製造する方法において、前記一対の管のうち一方の管を囲うように環状に設けられたガイドに沿って走行体を走行させることによって、前記走行体から軸方向に沿って他方の管側へ延出したトルク付与部から、前記一方の管の外周面から径方向に延出したトルク受け部にトルクを付与して、前記一方の管を回転させて、前記雄ねじ部と前記雌ねじ部をねじ締めする。   In the method of manufacturing a connected body of the pipes by screwing a male screw part and a female screw part to ends of a pair of pipes arranged in the axial direction, one of the pipes is surrounded. By causing the traveling body to travel along the guide provided annularly, from the torque applying portion extending from the traveling body to the other pipe side along the axial direction, the radial direction from the outer peripheral surface of the one pipe Torque is applied to the torque receiving portion extended to rotate the one pipe, and the male screw portion and the female screw portion are screwed.

本発明によれば、ガイドが一方の管を囲うように設けられていて、ガイドの径が管の径よりも大きいうえ、トルク受け部が管の外周面から径方向外側に延出しているので、走行体の走行力によって大きなトルクを一方の管に与えることができる。よって、雄ねじ部と雌ねじ部を省力的にねじ締めすることができる上、ねじ締め作業の作業員が少なくても済む。作業員の人数が少なければ、管の周囲の作業スペースが狭くても、作業員にとって作業を行いやすい。   According to the present invention, the guide is provided so as to surround one of the tubes, the diameter of the guide is larger than the diameter of the tube, and the torque receiving portion extends radially outward from the outer peripheral surface of the tube A large torque can be applied to one of the tubes by the traveling force of the traveling body. Therefore, the male screw portion and the female screw portion can be screwed in a power-saving manner, and the number of workers for the screw tightening operation can be reduced. If the number of workers is small, it is easy for workers to work even if the work space around the pipe is narrow.

ねじ締め装置及び管連結体を示した立面図である。It is an elevation view showing a screw fastening device and a pipe connector. ねじ締め装置の上部を拡大して示した斜視図である。It is the perspective view which expanded and showed the upper part of the screw fastening apparatus. 管の連結工程を説明するための立面図である。It is an elevation view for demonstrating the connection process of a pipe | tube. 管の連結工程を説明するための立面図である。It is an elevation view for demonstrating the connection process of a pipe | tube. 管の連結工程を説明するための立面図である。It is an elevation view for demonstrating the connection process of a pipe | tube.

以下、図面を参照して、本発明の実施形態について説明する。但し、以下に述べる実施形態には、本発明を実施するために技術的に好ましい種々の限定が付されているので、本発明の範囲を以下の実施形態及び図示例に限定するものではない。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, since the embodiments described below are subject to various technically preferable limitations for practicing the present invention, the scope of the present invention is not limited to the following embodiments and illustrated examples.

図1は、鋼管連結体10とともにねじ締め装置20を示した立面図である。   FIG. 1 is an elevational view showing a screw tightening device 20 together with a steel pipe connector 10.

図1に示すように、地盤1に孔2が削孔されており、孔2内に安定液3が充填されている。鋼管連結体10は孔2に挿入されて、安定液3に浸漬されている。鋼管連結体10は軸方向に連結された複数の鋼管11を有する。各鋼管11は、鋼管本体部12と、鋼管本体部12の上端に設けられた筒状雌ねじ部13と、鋼管本体部12の下端に設けられた筒状雄ねじ部14と、を有する。筒状雌ねじ部13の外周面は鋼管本体部12の外周面と面一に設けられ、筒状雌ねじ部13の内周面には雌ねじが形成されている。筒状雄ねじ部14の外径は筒状雌ねじ部13及び鋼管本体部12の外径よりも短く、筒状雄ねじ部14の外周面には雄ねじが形成されている。鋼管11の筒状雄ねじ部14がその下隣りの鋼管11の筒状雌ねじ部13に螺合されることによって、これら鋼管11,11が連結されている。鋼管11は直径が例えば1500mmである大径鋼管であり、一対の鋼管11,11の筒状雌ねじ部13と筒状雌ねじ部14を締める際に大きなトルクを必要とするので、そのトルクを発生させるためにねじ締め装置20を用いる。なお、筒状雄ねじ部14と鋼管本体部12が一体成形されたものでもよいし、筒状雄ねじ部14が鋼管本体部12に組み付けられたものでもよい。筒状雌ねじ部13と鋼管本体部12についても同様である。   As shown in FIG. 1, a hole 2 is drilled in the ground 1, and a stabilizer 3 is filled in the hole 2. The steel pipe connector 10 is inserted into the hole 2 and immersed in the stabilizer 3. The steel pipe connector 10 has a plurality of steel pipes 11 axially connected. Each steel pipe 11 has a steel pipe body 12, a cylindrical female screw 13 provided at the upper end of the steel pipe body 12, and a cylindrical male screw 14 provided at the lower end of the steel pipe body 12. The outer peripheral surface of the cylindrical female screw 13 is provided flush with the outer peripheral surface of the steel pipe main body 12, and a female screw is formed on the inner peripheral surface of the cylindrical female screw 13. The outer diameter of the cylindrical male screw portion 14 is shorter than the outer diameters of the cylindrical female screw portion 13 and the steel pipe main body 12, and a male screw is formed on the outer peripheral surface of the cylindrical male screw portion 14. The steel pipes 11 and 11 are connected by screwing the cylindrical male screw portion 14 of the steel pipe 11 with the cylindrical female screw portion 13 of the steel pipe 11 adjacent to the lower side thereof. The steel pipe 11 is a large diameter steel pipe having a diameter of, for example, 1500 mm, and a large torque is required when tightening the cylindrical female screw portion 13 and the cylindrical female screw portion 14 of the pair of steel pipes 11 and 11, so the torque is generated The screwing device 20 is used for this purpose. The cylindrical male screw portion 14 and the steel pipe main body portion 12 may be integrally formed, or the cylindrical male screw portion 14 may be assembled to the steel pipe main body portion 12. The same applies to the cylindrical female screw 13 and the steel pipe main body 12.

図2は、ねじ締め装置20の主要部の斜視図である。ねじ締め装置20は、孔2に挿入された先行の鋼管11の筒状雌ねじ部13に、孔2に挿入されていない後行の鋼管11の筒状雄ねじ部14を締め付ける装置である。以下、ねじ締め装置20の構成について詳細に説明する。   FIG. 2 is a perspective view of the main part of the screw tightening device 20. As shown in FIG. The screw tightening device 20 is a device for tightening the cylindrical male screw portion 14 of the rear steel pipe 11 not inserted into the hole 2 into the cylindrical female screw portion 13 of the preceding steel pipe 11 inserted into the hole 2. Hereinafter, the configuration of the screw tightening device 20 will be described in detail.

図1及び図2に示すように、ねじ締め装置20は保持具21、複数本の支柱22、ガイド24、複数(例えば、2機)の走行体25、複数(例えば、2個)のトルク付与部26及び複数(例えば、2個)のトルク受け部27を備える。   As shown in FIG. 1 and FIG. 2, the screw tightening device 20 is provided with a holder 21, a plurality of columns 22, a guide 24, a plurality of (for example, 2 machines) traveling bodies 25 and a plurality (for example 2) A portion 26 and a plurality of (for example, two) torque receivers 27 are provided.

保持具21は、孔2を囲むようにして地盤1上に設けられている。孔2に挿入された先行の鋼管11はその内周面を保持具21によって保持され、鋼管11の周方向、軸方向(特に下方)及び径方向の動きが保持具21によって拘束されている。以下、保持具21に保持されている先行の鋼管11を固定鋼管11という。   The holder 21 is provided on the ground 1 so as to surround the hole 2. The preceding steel pipe 11 inserted in the hole 2 is held by the holder 21 on the inner peripheral surface thereof, and movements of the steel pipe 11 in the circumferential direction, axial direction (especially downward) and radial direction are restrained by the holder 21. Hereinafter, the preceding steel pipe 11 held by the holder 21 is referred to as a fixed steel pipe 11.

地盤1上の孔2の周囲には、複数の支柱22が周方向に間隔を置いて立設されている。これら支柱22の上部には、支柱22の上部から径方向内側に延出したアーム23の基端が連結されている。これらアーム23は放射状に配列されており、アーム23の先端部には鋼管11よりも径が大きいリング状のガイド24が連結されている。ガイド24が地面から上方へ離れて設置されているので、ガイド24の下方に作業スペースを確保することができる。このガイド24は断面I字型のレールである。   A plurality of columns 22 are erected at circumferentially spaced intervals around the hole 2 on the ground 1. The proximal end of an arm 23 extending radially inward from the top of the column 22 is connected to the top of the column 22. The arms 23 are radially arranged, and a ring-shaped guide 24 having a diameter larger than that of the steel pipe 11 is connected to the tip of the arms 23. Since the guide 24 is installed upward away from the ground, a working space can be secured below the guide 24. The guide 24 is a rail of I-shaped cross section.

ガイド24に複数の走行体25が取り付けられ、これら走行体25がガイド24に沿って走行する。走行体25はギヤードトロリーであり、走行体25のハンドチェーン25aが引っ張られて周回すると、その回転力が走行体25の歯車減速機構によって走行体25の車輪25bに伝達されることで、走行体25がガイド24に沿って走行する。   A plurality of traveling bodies 25 are attached to the guide 24, and the traveling bodies 25 travel along the guides 24. The traveling body 25 is a geared trolley, and when the hand chain 25 a of the traveling body 25 is pulled and orbits, the rotational force is transmitted to the wheels 25 b of the traveling body 25 by the gear reduction mechanism of the traveling body 25. 25 travel along the guide 24.

走行体25には棒状のトルク付与部26の上端が連結され、そのトルク付与部26は走行体25から鉛直方向に垂下している。一方、ねじ締め装置20によって固定鋼管11に連結される鋼管11(以下、回転鋼管11という)の鋼管本体部12の外周面の下部には、断面H型の棒状のトルク受け部27が周方向に一定間隔で固定具(例えば、磁石、固定バンド)によって着脱可能に取り付けられている。トルク受け部27は、鋼管本体部12の外周面から径方向外方へ延出している。これらトルク付与部26とトルク受け部27が当接すれば、走行体25の走行に伴うトルクがトルク付与部26及びトルク受け部27によって回転鋼管11に発生する。   The upper end of a rod-like torque applying portion 26 is connected to the traveling body 25, and the torque applying portion 26 is suspended from the traveling body 25 in the vertical direction. On the other hand, at the lower part of the outer peripheral surface of the steel pipe main body 12 of the steel pipe 11 (hereinafter referred to as the rotary steel pipe 11) connected with the fixed steel pipe 11 by the screw tightening device 20 At fixed intervals (for example, magnets, fixed bands). The torque receiving portion 27 extends radially outward from the outer peripheral surface of the steel pipe main body 12. When the torque applying unit 26 and the torque receiving unit 27 abut each other, the torque applying unit 26 and the torque receiving unit 27 generate torque on the rotary steel pipe 11 according to the traveling of the traveling body 25.

続いて、ねじ締め装置20を用いて鋼管連結体10を製造する方法について説明する。
まず、地盤1に孔2を掘削し、孔2内に安定液3を供給する。
次に、地盤1上の孔2の周囲にねじ締め装置20(但し、トルク受け部27を除く部分)を組み立てる。
次に、先行の固定鋼管11をクレーン等によって吊り上げて、その固定鋼管11を孔2及び保持具21の内側に挿入する。そして、固定鋼管11の上部を孔2から上方へ突き出すようにして、その固定鋼管11を保持具21によって保持する。
Then, the method to manufacture the steel pipe connection body 10 using the screw fastening apparatus 20 is demonstrated.
First, the hole 2 is excavated in the ground 1, and the stabilizer 3 is supplied into the hole 2.
Next, a screwing device 20 (but excluding the torque receiver 27) is assembled around the hole 2 on the ground 1.
Next, the preceding fixed steel pipe 11 is lifted by a crane or the like, and the fixed steel pipe 11 is inserted into the inside of the hole 2 and the holder 21. Then, the upper portion of the fixed steel pipe 11 is protruded upward from the hole 2, and the fixed steel pipe 11 is held by the holder 21.

次に、図3に示すように、後行の回転鋼管11をクレーン等によって吊り上げて、その回転鋼管11をガイド24の上方からガイド24の内側へ下降させ、その回転鋼管11の筒状雄ねじ部14の下端を固定鋼管11の筒状雌ねじ部13の上端に嵌め入れる。回転鋼管11を吊り下げたので、その回転鋼管11の筒状雄ねじ部14の下端を固定鋼管11の筒状雌ねじ部13の上端に嵌め入れる際に、回転鋼管11と固定鋼管11の軸合わせを行いやすい。
次に、図4に示すように、回転鋼管11の鋼管本体部12の外周面の下部にトルク受け部27を取り付ける。
Next, as shown in FIG. 3, the rear rotating steel pipe 11 is lifted by a crane or the like, and the rotary steel pipe 11 is lowered from above the guide 24 to the inside of the guide 24. The lower end of 14 is fitted to the upper end of the cylindrical internal thread 13 of the fixed steel pipe 11. Since the rotary steel pipe 11 was suspended, when fitting the lower end of the cylindrical male screw portion 14 of the rotary steel pipe 11 to the upper end of the cylindrical female screw portion 13 of the fixed steel pipe 11, axial alignment of the rotary steel pipe 11 and the fixed steel pipe 11 Easy to do.
Next, as shown in FIG. 4, the torque receiver 27 is attached to the lower portion of the outer peripheral surface of the steel pipe main body 12 of the rotary steel pipe 11.

次に、クレーン等で回転鋼管11を吊った状態で、ハンドチェーン25aを引っ張ることによって走行体25をガイド24に沿って走行させて、トルク付与部26をトルク受け部27に当接させる。ここで、筒状雄ねじ部14が右ねじである場合、上から見て走行体25を時計回りの向きに走行させ、筒状雄ねじ部14が左ねじである場合、上から見て、走行体25を反時計回りの向きに走行させる。
図5に示すように、トルク付与部26とトルク受け部27の当接後も継続して走行体25を走行させて、トルク付与部26によりトルク受け部27を押し動かし、走行体25の走行に伴うトルクをトルク付与部26からトルク受け部27及び回転鋼管11に付与する。そうすることによって回転鋼管11を回転させて、回転鋼管11の筒状雄ねじ部14を固定鋼管11の筒状雌ねじ部13にねじ締めする。回転鋼管11を吊っているので、回転鋼管11の姿勢が重力により安定し、回転鋼管11の筒状雄ねじ部14と固定鋼管11の筒状雌ねじ部13の締め付けを行いやすい。また、トルク受け部27が周方向に等間隔で配列されていれば、回転鋼管11を安定して回転させることができ、回転鋼管11の筒状雄ねじ部14と固定鋼管11の筒状雌ねじ部13の締め付けを行いやすい。回転鋼管11の筒状雄ねじ部14と固定鋼管11の筒状雌ねじ部13の締め付けによって回転鋼管11が下降し、それに伴ってトルク受け部27がトルク付与部26に沿って下方へ摺動する。トルク付与部26がまっすぐに上下に延在しているので、ねじ締めに伴い回転鋼管11及びトルク受け部27が下降しても、トルク受け部27とトルク付与部26の当接状態を維持することができる。
Next, in a state where the rotary steel pipe 11 is suspended by a crane or the like, the traveling body 25 is made to travel along the guide 24 by pulling the hand chain 25a, and the torque applying portion 26 is brought into contact with the torque receiving portion 27. Here, when the cylindrical male screw portion 14 is a right-handed screw, the traveling body 25 is caused to travel clockwise as viewed from above, and when the cylindrical male screw portion 14 is a left-handed screw, the traveling body is viewed from above Run 25 in a counterclockwise direction.
As shown in FIG. 5, the traveling body 25 continues to travel even after contact between the torque applying portion 26 and the torque receiving portion 27, and the torque applying portion 26 pushes and moves the torque receiving portion 27 to travel the traveling body 25. Torque is applied from the torque application unit 26 to the torque receiver 27 and the rotary steel pipe 11. By doing so, the rotary steel pipe 11 is rotated, and the cylindrical male screw portion 14 of the rotary steel pipe 11 is screwed to the cylindrical female screw portion 13 of the fixed steel pipe 11. Since the rotary steel pipe 11 is suspended, the posture of the rotary steel pipe 11 is stabilized by gravity, and the cylindrical male screw 14 of the rotary steel pipe 11 and the cylindrical female screw 13 of the fixed steel pipe 11 can be easily tightened. Further, if the torque receiving portions 27 are arranged at equal intervals in the circumferential direction, the rotary steel pipe 11 can be stably rotated, and the cylindrical male screw portion 14 of the rotary steel pipe 11 and the cylindrical female screw portion of the fixed steel pipe 11 Easy to tighten 13 By tightening the cylindrical male screw 14 of the rotary steel pipe 11 and the cylindrical female screw 13 of the fixed steel pipe 11, the rotary steel pipe 11 descends, and the torque receiver 27 slides downward along the torque applying part 26 accordingly. Since the torque applying portion 26 extends straight up and down, the contact state between the torque receiving portion 27 and the torque applying portion 26 is maintained even if the rotary steel pipe 11 and the torque receiving portion 27 descend due to the screw tightening. be able to.

走行体25が歯車減速機構を有したギヤードトロリーであるので、ハンドチェーン25aの引張力が歯車減速機構によって走行体25の大きな走行力に変換される。そして、ガイド24の直径が鋼管11の直径よりも大きいので、大きなトルクを回転鋼管11に付与することができる。よって、作業員が少なくても、また作業員によるハンドチェーン25aの引張力が弱くても、回転鋼管11の筒状雄ねじ部14を固定鋼管11の筒状雌ねじ部13に締め付けることができる。少人数で回転鋼管11の回転作業を行えば、狭隘な作業スペースでも作業員同士がぶつからないようになり、作業員の安全性が向上する。   Since the traveling body 25 is a geared trolley having a gear reduction mechanism, the tensile force of the hand chain 25a is converted into a large traveling force of the traveling body 25 by the gear reduction mechanism. Then, since the diameter of the guide 24 is larger than the diameter of the steel pipe 11, a large torque can be applied to the rotary steel pipe 11. Therefore, even if the number of workers is small and the tensile force of the hand chain 25a by the workers is weak, the cylindrical male screw portion 14 of the rotary steel pipe 11 can be tightened to the cylindrical female screw portion 13 of the fixed steel pipe 11. If the rotating work of the rotary steel pipe 11 is performed by a small number of people, workers do not collide with each other even in a narrow work space, and the safety of the workers is improved.

ガイド24の直径が鋼管11の直径よりも大きく、ハンドチェーン25aにより走行体25を走行させることができるので、作業員は回転鋼管11から径方向外方に離れて回転鋼管11を回転させることができる。よって、作業員は安全に作業を行える。   Since the diameter of the guide 24 is larger than the diameter of the steel pipe 11 and the traveling body 25 can be traveled by the hand chain 25a, the worker may rotate the rotary steel pipe 11 away from the rotary steel pipe 11 radially outward. it can. Therefore, the worker can work safely.

ねじ締め装置20を用いた回転鋼管11の筒状雄ねじ部14と固定鋼管11の筒状雌ねじ部13の締め付けが完了したら、トルク受け部27を回転鋼管11から取り外す。次に、回転鋼管11の筒状雄ねじ部14と固定鋼管11の筒状雌ねじ部13を本締めする。なお、ねじ締め装置20を用いて回転鋼管11の筒状雄ねじ部14と固定鋼管11の筒状雌ねじ部13を本締めするのであれば、別途本締めをする必要はない。   When the tightening of the cylindrical male screw portion 14 of the rotary steel pipe 11 and the cylindrical female screw portion 13 of the fixed steel pipe 11 using the screw tightening device 20 is completed, the torque receiver 27 is removed from the rotary steel pipe 11. Next, the cylindrical male screw portion 14 of the rotary steel pipe 11 and the cylindrical female screw portion 13 of the fixed steel pipe 11 are fully tightened. In addition, if the cylindrical male screw portion 14 of the rotary steel pipe 11 and the cylindrical female screw portion 13 of the fixed steel pipe 11 are fully tightened using the screw tightening device 20, it is not necessary to separately perform full tightening.

次に、保持具21による先行の固定鋼管11(上から2番目の鋼管11)の保持を解除する。そして、これら鋼管11,11の連結体をクレーンによって下降させて孔2に進入させた後、最上段の鋼管11を保持具21によって保持する。その後、上述の説明と同様にして、ねじ締め装置20を用いて、最上段の鋼管11に新たな回転鋼管11を連結する。以後、保持具21による保持解除、鋼管連結体の進入、新たな回転鋼管11の連結を繰り返して行うことによって、所望の本数の鋼管11を連結した鋼管連結体10が完成する。この鋼管連結体10は、例えば、その後の逆打ち工法における逆打ち支柱として利用される。   Next, the holding of the preceding fixed steel pipe 11 (the second steel pipe 11 from the top) by the holder 21 is released. Then, after the connected body of the steel pipes 11 and 11 is lowered by a crane and made to enter the hole 2, the steel pipe 11 at the uppermost stage is held by the holder 21. Thereafter, in the same manner as described above, a new rotary steel pipe 11 is connected to the uppermost steel pipe 11 using the screw tightening device 20. Thereafter, the steel pipe connecting body 10 in which a desired number of steel pipes 11 are connected is completed by repeatedly performing holding release by the holding tool 21, entry of the steel pipe joint body, and connection of a new rotary steel pipe 11. This steel pipe connection body 10 is used, for example, as a backlashing support in a subsequent backwashing method.

以上、本発明を実施するための形態について説明したが、上記実施形態は本発明の理解を容易にするためのものであり、本発明を限定して解釈するためのものではない。本発明はその趣旨を逸脱することなく変更、改良され得るとともに、本発明にはその等価物も含まれる。以上の実施形態からの変更点について以下に説明する。以下に説明する変形点は、可能な限り組み合わせて適用してもよい。   As mentioned above, although the form for implementing this invention was demonstrated, the said embodiment is for making an understanding of this invention easy, and is not for limiting and interpreting this invention. The present invention can be changed and improved without departing from the gist thereof, and the present invention also includes the equivalents thereof. The changes from the above embodiment will be described below. The modifications described below may be applied in combination as much as possible.

(1) 上述の実施形態では、鋼管11を鋼以外の金属管に変更してもよいし、金属以外の管(例えば、陶製管)に変更してもよい。 (1) In the embodiment described above, the steel pipe 11 may be changed to a metal pipe other than steel, or may be changed to a pipe other than metal (for example, a porcelain pipe).

(2) 上述の実施形態では、走行体25がギヤードトロリーであったが、歯車減速機構を有さないプレーントロリーであってもよいし、モータの軸が歯車減速機構に連結されて、そのモータにより車輪25bを駆動する電動トロリーであってもよい。 (2) In the above embodiment, the traveling body 25 is a geared trolley, but it may be a plain trolley not having a gear reduction mechanism, or the motor shaft is connected to the gear reduction mechanism, and the motor It may be an electric trolley that drives the wheels 25b.

(3) 上述の実施の形態では、ねじ締め装置20が縦型であったが、ねじ締め装置20が横型であってもよい。ねじ締め装置20が横型である場合、支柱22及びアーム23が採用されず、保持具21及びガイド24が立てられた状態に支持部材によって支持され、保持具21とガイド24が横方向に並んでいる。保持具21には、横に倒れた固定鋼管11を支持する管支持部が取り付けられている。また、ガイド24には、横に倒れた回転鋼管11を摺動可能に支持する管案内部が取り付けられている。また、走行体25は、電動型であることが好ましい。 (3) In the above-mentioned embodiment, although screwing device 20 was vertical, screwing device 20 may be horizontal. When the screw tightening device 20 is a horizontal type, the support 22 and the arm 23 are not adopted, and the holder 21 and the guide 24 are supported by the support member in the erected state, and the holder 21 and the guide 24 are arranged side by side. There is. The holder 21 is provided with a pipe support for supporting the fixed steel pipe 11 which has fallen to the side. Further, the guide 24 is attached with a pipe guide portion which slidably supports the rotary steel pipe 11 which has fallen to the side. Moreover, it is preferable that the traveling body 25 be an electric type.

(4) 上述の実施の形態では、ねじ締め装置20を用いて回転鋼管11を回転させることによって、回転鋼管11の筒状雄ねじ部14を固定鋼管11の筒状雌ねじ部13にねじ締めしたが、ねじ締め装置20を用いて回転鋼管11を回転させることによって、回転鋼管11の筒状雌ねじ部13を固定鋼管11の筒状雄ねじ部14にねじ締めしてもよい。 (4) In the above embodiment, by rotating the rotary steel pipe 11 using the screw tightening device 20, the cylindrical male screw portion 14 of the rotary steel pipe 11 is screwed to the cylindrical female screw portion 13 of the fixed steel pipe 11. The cylindrical female screw portion 13 of the rotary steel pipe 11 may be screwed to the cylindrical male screw portion 14 of the fixed steel pipe 11 by rotating the rotary steel pipe 11 using the screw tightening device 20.

(5) 上述の実施の形態では、トルク付与部26によりトルク受け部27を押し動かしたが、トルク付与部26によりトルク受け部27を引き動かしてもよい。この場合、ワイヤ、ロープ、チェーン、締結バンド等の巻き材をトルク付与部26及びトルク受け部27に巻き付けて、トルク付与部26とトルク受け部27が巻き材によって周方向に離れないようにするとともに、巻き材(必要に応じてトルク受け部27も)がトルク付与部26に沿って下方へ摺動するようにする。巻き材を強くトルク付与部26とトルク受け部27に巻き付ければ、筒状雌ねじ部13と筒状雄ねじ部14の締め付けの際にトルク付与部26とトルク受け部27が当接し、巻き材を緩くトルク付与部26とトルク受け部27に巻き付ければ、筒状雌ねじ部13と筒状雄ねじ部14の締め付けの際にトルク付与部26とトルク受け部27との間に遊び(間隔)が形成される。
なお、ワイヤ、ロープ、チェーン等の索状体をトルク付与部26とトルク受け部27に連結して、トルク付与部26及び索状体によってトルク受け部27を引き動かしてもよい。
(5) In the above embodiment, although the torque receiving unit 27 is pushed and moved by the torque applying unit 26, the torque receiving unit 27 may be pulled by the torque applying unit 26. In this case, a winding material such as a wire, a rope, a chain, a fastening band, etc. is wound around the torque applying unit 26 and the torque receiving unit 27 so that the torque applying unit 26 and the torque receiving unit 27 are not separated in the circumferential direction by the winding. At the same time, the winding material (and the torque receiving portion 27 as necessary) is made to slide downward along the torque applying portion 26. If the winding material is strongly wound around the torque applying portion 26 and the torque receiving portion 27, the torque applying portion 26 and the torque receiving portion 27 abut each other when the tubular female screw portion 13 and the tubular male screw portion 14 are tightened. When loosely wound around the torque applying portion 26 and the torque receiving portion 27, a gap (interval) is formed between the torque applying portion 26 and the torque receiving portion 27 when the cylindrical female screw 13 and the cylindrical male screw 14 are tightened. Be done.
A rope-like body such as a wire, a rope or a chain may be connected to the torque applying portion 26 and the torque receiving portion 27, and the torque receiving portion 27 may be pulled by the torque applying portion 26 and the rope-like body.

(6) 貫通孔がトルク受け部27を上下に貫通するように形成され、トルク付与部26がその貫通孔に挿入されてもよい。この場合、走行体25をガイド24に沿って走行させることによって、トルク付与部26が貫通孔の縁に当接し、トルク付与部26からトルク受け部27にトルクが伝わるとともに、トルク受け部27がトルク付与部26に沿って下方へ摺動する。 (6) The through hole may be formed to pass through the torque receiving portion 27 up and down, and the torque applying portion 26 may be inserted into the through hole. In this case, by causing the traveling body 25 to travel along the guide 24, the torque applying unit 26 abuts on the edge of the through hole, torque is transmitted from the torque applying unit 26 to the torque receiving unit 27, and the torque receiving unit 27 It slides downward along the torque applying portion 26.

10…鋼管連結体, 11…鋼管, 12…鋼管本体部, 13…筒状雌ねじ部, 14…筒状雄ねじ部, 20…ねじ締め装置, 21…保持具, 24…ガイド, 25…走行体, 26…トルク付与部, 27…トルク受け部   DESCRIPTION OF SYMBOLS 10 ... Steel pipe connection body, 11 ... Steel pipe, 12 ... Steel pipe main body part, 13 ... Tubular internal thread part, 14 ... Tubular external thread part, 20 ... Screw fastening apparatus, 21 ... Holding tool, 24 ... Guide, 25 ... Traveling body, 26 ... torque application unit, 27 ... torque receiving unit

Claims (5)

軸方向に並べられる一対の管の端部にそれぞれ設けられた雄ねじ部と雌ねじ部をねじ締めするねじ締め装置において、
前記一対の管のうち一方の管を囲うように環状に設けられたガイドと、
前記ガイドに沿って走行可能な走行体と、
前記走行体から軸方向に沿って他方の管側へ延出したトルク付与部と、
前記一方の管の外周面から径方向外側に延出し、前記走行体の走行に伴うトルクを前記トルク付与部から受けるトルク受け部と、を備えることを特徴とするねじ締め装置。
In a screw tightening device for screwing an external thread portion and an internal thread portion respectively provided at ends of a pair of axially aligned tubes,
A guide provided annularly so as to surround one of the pair of tubes;
A traveling body capable of traveling along the guide;
A torque applying portion extending from the traveling body to the other pipe side along the axial direction;
And a torque receiving portion extending radially outward from an outer peripheral surface of the one pipe and receiving a torque accompanying the traveling of the traveling body from the torque applying portion.
前記トルク受け部が前記トルク付与部に沿って摺動可能に前記トルク付与部に当接することを特徴とする請求項1に記載のねじ締め装置。   The screw tightening device according to claim 1, wherein the torque receiving portion abuts on the torque applying portion so as to be slidable along the torque applying portion. 前記走行体がギヤードトロリーであることを特徴とする請求項1又は2に記載のねじ締め装置。   The screwing device according to claim 1, wherein the traveling body is a geared trolley. 軸方向に並べられる一対の管の端部にそれぞれ設けられた雄ねじ部と雌ねじ部をねじ締めすることによって、前記管の連結体を製造する方法において、
前記一対の管のうち一方の管を囲うように環状に設けられたガイドに沿って走行体を走行させることによって、前記走行体から軸方向に沿って他方の管側へ延出したトルク付与部から、前記一方の管の外周面から径方向外側に延出したトルク受け部にトルクを付与して、前記一方の管を回転させて、前記雄ねじ部と前記雌ねじ部をねじ締めすることを特徴とする管連結体の製造方法。
In a method of manufacturing a connected body of the tubes by screwing male and female threads respectively provided on ends of a pair of tubes arranged in an axial direction,
A torque applying portion extending from the traveling body to the other pipe side along the axial direction by causing the traveling body to travel along the guide provided annularly so as to surround one of the pair of pipes. From this, torque is applied to a torque receiving portion extending radially outward from the outer peripheral surface of the one tube, and the one tube is rotated to screw the male screw portion and the female screw portion. And a method of manufacturing a pipe assembly.
地盤に削孔された孔に前記他方の管を挿入するとともに前記他方の管の上部を前記孔から突き出して、前記他方の管の周方向の動きを拘束した状態で、且つ、前記一方の管を吊りつつ前記ガイドの内側に通して、前記一方の管の下端部と前記他方の管の上端部を合わせた状態で、前記走行体を走行させることを特徴とする請求項4に記載の管連結体の製造方法。   The other pipe is inserted into a hole drilled in the ground, and the upper part of the other pipe is protruded from the hole to restrain the circumferential movement of the other pipe, and the one pipe The pipe according to claim 4, wherein the traveling body is caused to travel while the lower end of the one pipe and the upper end of the other pipe are aligned while passing through the inside of the guide while suspending the Method of manufacturing linked body.
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