JP2005003029A - Joint structure for tube body - Google Patents

Joint structure for tube body Download PDF

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Publication number
JP2005003029A
JP2005003029A JP2003164867A JP2003164867A JP2005003029A JP 2005003029 A JP2005003029 A JP 2005003029A JP 2003164867 A JP2003164867 A JP 2003164867A JP 2003164867 A JP2003164867 A JP 2003164867A JP 2005003029 A JP2005003029 A JP 2005003029A
Authority
JP
Japan
Prior art keywords
joined
sleeve
tubular body
ring
joint structure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2003164867A
Other languages
Japanese (ja)
Inventor
Hiroshi Murakami
浩 村上
Kunihiro Haseyama
國廣 長谷山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Asahi Kasei Construction Materials Corp
Hiraoka Metal Industrial Co Ltd
Original Assignee
Asahi Kasei Construction Materials Corp
Hiraoka Metal Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Asahi Kasei Construction Materials Corp, Hiraoka Metal Industrial Co Ltd filed Critical Asahi Kasei Construction Materials Corp
Priority to JP2003164867A priority Critical patent/JP2005003029A/en
Publication of JP2005003029A publication Critical patent/JP2005003029A/en
Pending legal-status Critical Current

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  • Piles And Underground Anchors (AREA)
  • Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
  • Joints With Sleeves (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a joint structure for a tube body for effectively transmitting outer force by allowing easy joint of the tube body. <P>SOLUTION: The tube body has a female joint portion 2 to which a sleeve 3 is joined, an elastic ring member arranged in a taper space 7 of the sleeve 3, and a male joint portion 1 passing through the elastic ring member until abutting on the female joint portion 2 and connected thereto. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、配管パイプ、鋼管、既製コンクリート杭等の管体を接続する際の継構造に関するものである。
【0002】
【従来の技術】
従来、管体を接続する際には、接合する両管体の端部を溶接により接続したり、接合する両管体の端部にオスネジ及びメスネジを設けて、ネジ接続したりして、接続していた(特許文献1参照)。
【0003】
また、無溶接の継構造として、継手スリーブと管体とをボルトで止める構造も提案されている(特許文献2参照)。
【0004】
【特許文献1】
特開平11−344169号公報
【特許文献2】
特公平6−17575号公報
【0005】
【発明が解決しようとする課題】
しかしながら、前述の従来例において、管体の端部にオスネジを切り、一方の管体の端部にメスネジを設け、ネジ接続する方法は、接続する管体が短く、軽量な場合は比較的簡単に接続出来るが、管体が長くなったり、重くなったりすると管体に回転を与えて接合することが困難になり、煩雑な作業が発生した。
【0006】
一方、溶接接続は、高度な溶接技能を有する溶接技術者が必要となり、現場のさまざまな条件に応じて信頼性のある溶接をすることが難しくなってきている。
【0007】
また、特公平6−17575号に示されている鋼管杭の継方法は、下杭の内部からボルトを外側に突出させる必要があり、接合時にこの状態のボルトにナットを嵌合させるのが困難で、ボルトが下杭の内部に落下するおそれがある。
【0008】
本発明は前記課題を解決するものであり、その目的とするところは、管体を簡単に接合することが出来、しかも外力を効果的に伝達することが可能な管体の継構造を提供せんとするものである。
【0009】
【課題を解決するための手段】
前記目的を達成するための本発明に係る管体の継構造は、管体の端部に下部の内径が接合すべき管体の外径よりも大きく、上部の内径がその接合すべき管体の外径とほぼ等しくなるように形成したテーパー状の空間を有するスリーブを接合し、前記接合すべき管体の外径よりも小さい内径を有する弾性リング部材を前記スリーブのテーパー状の空間内部に配置し、前記スリーブを接合してなる管体の端部に前記接合すべき管体の端部を前記弾性リング部材を貫通させて接続してなることを特徴とする。
【0010】
本発明は、上述の如く構成したので、管体の端部に接合したスリーブの中に接合すべき管体の端部を挿入することにより、スリーブが形成するテーパー状の空間の中に弾性リング部材が閉じ込められ、一種の楔となってスリーブを接合してなる管体の端部と接合すべき管体の端部とを接合することが出来る。
【0011】
また、前記弾性リング部材は、C形状の鋼製リング、環状のゴムリング、環状のプラスチックリングのうちの何れかとするか、またはこれらのうちの少なくとも2つを組み合わせた複合構造とすることが出来る。これにより、使用する弾性リング部材の材質や構造をより効果的に選択することが出来る。
【0012】
また、前記スリーブを接合して形成した管体の端部のメス継手部及び前記接合すべき管体のオス継手部に互いに係合する凹凸部を設けた場合には、オス継手部とメス継手部の互いの凹凸部の係合により回転トルクを伝達することが出来る。
【0013】
【発明の実施の形態】
図により本発明に係る管体の継構造の一実施形態を具体的に説明する。図1は本発明に係る管体の継構造の第1実施形態の構成を示す断面説明図、図2は本発明に係る管体の継構造の第2実施形態の構成を示す断面説明図、図3は本発明に係る管体の継構造の第3実施形態の構成を示す断面説明図、図4は本発明に係る管体の継構造の第4実施形態の構成を示す断面説明図である。
【0014】
図1において、1,2はそれぞれ接続される管体の端部に設けられたオス継手部及びメス継手部である。メス継手部2には接合すべき管体(オス継手部1を含む)の外径よりも大きい内径を有する大径部3aと、その接合すべき管体の外径とほぼ等しい内径を有する小径部3bとが連続されたテーパー状の空間7を有するスリーブ3が溶接8により接合されている。
【0015】
即ち、スリーブ3のテーパー状の空間7は下部の内径が接合すべき管体の外径よりも大きく、上部の内径がその接合すべき管体の外径とほぼ等しくなるように形成されている。
【0016】
スリーブ3の空間7内部には、自然状態で接合すべき管体(オス継手部1を含む)の外径よりも小さい内径を有する弾性リング部材となるC形状の鋼製リング4があらかじめ挿入して配置されている。
【0017】
本実施形態の鋼製リング4はスリーブ3内のテーパー面に応じた断面台形状で構成されており、環状リングの円周に1箇所切り欠きを設けて一つ割りのリングとしている。
【0018】
接合すべき管体の端部(オス継手部1を含む)をスリーブ3内に挿入し、該接合すべき管体の端部を鋼製リング4を貫通してスリーブ3を接合してなる管体の端部(メス継手部2を含む)に当接させて接続する。必要により、スリーブ3の開放端部をオス継手部1の外周面に溶接9する。
【0019】
鋼製リング4が一つ割りに形成されていることにより、該鋼製リング4はバネの作用でオス継手部1の外周面に密着する。このような状態で外力が加わると、圧縮力はオスメス継手部1,2が鋼製リング4を介してその全断面を接して接合されているために100%有効に伝達される。
【0020】
また、引っ張り力が作用した場合にオスメス継手部1,2に相対引き抜き変位が発生しようとすると、鋼製リング4がスリーブ3内で図1の上方に移動しようとする。しかし、スリーブ3内の空間7は上に行くほど狭くなるようなテーパー状に形成されているため鋼製リング4が楔として作用し、引き抜かれることを防止する。その結果、引き抜き力も100%伝達することが出来る。
【0021】
また、曲げモーメントが作用した場合は、上記の圧縮力と引き抜き力が作用する場合の重ね合わせであるから、曲げモーメントも問題なく100%伝達することが出来る。
【0022】
図2は本発明に係る管体の継構造の第2実施形態を示したものであり、弾性リング部材として、環状のゴムリング、環状のプラスチックリング等の断面円形状のOリング5を使用したものである。
【0023】
このようなゴム製、プラスチック製のOリング5を用いる場合には、それ自体の弾性変形を期待することが出来るため、前記第1実施形態の鋼製リング4のように割れ目を設けず、環状のOリング5で構成することが出来る。他の構成は前記第1実施形態と同様に構成され、同様な効果を得ることが出来るものである。
【0024】
図3は本発明に係る管体の継構造の第3実施形態を示したものであり、弾性リング部材として、前記第1実施形態の鋼製リング4と、前記第2実施形態の環状のゴムリング、環状のプラスチックリング等のOリング5を併用したものである。他の構成は前記各実施形態と同様に構成され、同様な効果を得ることが出来るものである。
【0025】
尚、これ等の弾性リング部材は、前述したC形状の鋼製リング4、環状のゴムリング、環状のプラスチックリングのうちの何れか1つとするか、またはこれらのうちの少なくとも2つを組み合わせた複合構造とすることが出来る。
【0026】
図4は本発明に係る管体の継構造の第4実施形態を示したものであり、スリーブ3を接合して形成した管体の端部のメス継手部2及び接合すべき管体のオス継手部1に互いに係合する凹凸部6a,3cを設けたものである。
【0027】
本実施形態では、オス継手部1の外周にスリーブ6が嵌挿されて溶接9により接合されている。オス継手部1の外周に接合されたスリーブ6のメス継手部2側の端部には凹凸部6aが形成されており、一方、メス継手部2の外周に接合されたスリーブ3の開放端部には該凹凸部6aに係合し得る凹凸部3cが形成されている。
【0028】
そして、前記各実施形態と同様にオス継手部1をスリーブ3の内部に挿入して弾性リング部材となる鋼製リング4やOリング5等を貫通させ、凹凸部6a,3cを嵌合させて係合させつつメス継手部2に当接して接続する。凹凸部6a,3cは溶接等を施さなくても弾性リング部材となる鋼製リング4やOリング5の楔の作用によりオス継手部1とメス継手部2を確実に接合することが出来る。
【0029】
接合される管体が杭等のように外力として回転トルクが作用し、回転トルクをオスメス継手部1,2で伝達する必要がある場合は、図4に示したようにオスメス継手部1,2が相互に嵌合するような凹凸部6a,3cを設けることで回転トルクをオスメス継手部1,2で伝達することが出来る。
【0030】
尚、前記実施形態では、管体の継構造についてその一例を示したものであるが、管体の一例として既製コンクリート杭や鋼管杭等の継構造としても適用可能である。
【0031】
【発明の効果】
本発明は、上述の如き構成と作用とを有するので、管体を簡単に接合することが出来、外力を効果的に伝達することが可能な全強の継構造を提供することが出来る。
【0032】
即ち、管体の端部に接合したスリーブの中に接合すべき管体の端部を挿入することにより、スリーブが形成するテーパー状の空間の中に弾性リング部材が閉じ込められ、一種の楔となってスリーブを接合してなる管体の端部と接合すべき管体の端部とを接合することが出来る。
【0033】
即ち、管体の端部に接合したスリーブの中に接合すべき管体の端部を挿入するだけで、所謂ワンタッチで管体の端部と接合すべき管体の端部との接合が完了し、接合に際して回転を与えたり溶接をする必要がない。
【0034】
また、弾性リング部材は、C形状の鋼製リング、環状のゴムリング、環状のプラスチックリングのうちの何れかとするか、またはこれらのうちの少なくとも2つを組み合わせた複合構造とすることが出来る。これにより、使用する弾性リング部材の材質や構造をより効果的に選択することが出来る。
【0035】
また、スリーブを接合して形成した管体の端部のメス継手部及び接合すべき管体のオス継手部に互いに係合する凹凸部を設けた場合には、オス継手部とメス継手部の互いの凹凸部の係合により回転トルクを伝達することが出来る。
【図面の簡単な説明】
【図1】本発明に係る管体の継構造の第1実施形態の構成を示す断面説明図である。
【図2】本発明に係る管体の継構造の第2実施形態の構成を示す断面説明図である。
【図3】本発明に係る管体の継構造の第3実施形態の構成を示す断面説明図である。
【図4】本発明に係る管体の継構造の第4実施形態の構成を示す断面説明図である。
【符号の説明】
1…オス継手部
2…メス継手部
3…スリーブ
3a…大径部
3b…小径部
3c…凹凸部
4…鋼製リング
5…Oリング
6…スリーブ
6a…凹凸部
7…空間
8,9…溶接
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a joint structure for connecting pipe bodies such as piping pipes, steel pipes, and ready-made concrete piles.
[0002]
[Prior art]
Conventionally, when connecting pipes, the ends of both pipes to be joined are connected by welding, or male and female screws are provided at the ends of both pipes to be joined. (See Patent Document 1).
[0003]
In addition, as a non-welded joint structure, a structure in which a joint sleeve and a pipe body are fastened with bolts has been proposed (see Patent Document 2).
[0004]
[Patent Document 1]
Japanese Patent Laid-Open No. 11-344169 [Patent Document 2]
Japanese Patent Publication No. 6-17575 [0005]
[Problems to be solved by the invention]
However, in the above-described conventional example, the method of connecting a screw by cutting a male screw at the end of a tube and providing a female screw at the end of one tube is relatively simple when the tube to be connected is short and lightweight. However, if the tube becomes longer or heavier, it becomes difficult to rotate and join the tube, and complicated work is required.
[0006]
On the other hand, welding connection requires a welding engineer having advanced welding skills, and it has become difficult to perform reliable welding according to various conditions in the field.
[0007]
In addition, the steel pipe pile joint method shown in Japanese Patent Publication No. 6-17575 requires the bolt to protrude outward from the inside of the lower pile, and it is difficult to fit the nut to the bolt in this state at the time of joining. There is a risk that the bolt will fall into the lower pile.
[0008]
The present invention solves the above-mentioned problems, and its object is to provide a pipe joint structure that can easily join pipe bodies and that can effectively transmit external force. It is what.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the pipe joint structure according to the present invention is such that the lower inner diameter is larger than the outer diameter of the pipe to be joined to the end of the pipe, and the upper inner diameter is the pipe to be joined. A sleeve having a tapered space formed so as to be substantially equal to the outer diameter of the sleeve is joined, and an elastic ring member having an inner diameter smaller than the outer diameter of the tube to be joined is placed inside the tapered space of the sleeve. The end of the tubular body to be joined is connected to the end of the tubular body formed by joining and joining the sleeve through the elastic ring member.
[0010]
Since the present invention is configured as described above, the elastic ring is inserted into the tapered space formed by the sleeve by inserting the end of the tube to be joined into the sleeve joined to the end of the tube. The member is confined, and the end of the tube formed by joining the sleeve as a kind of wedge can be joined to the end of the tube to be joined.
[0011]
The elastic ring member may be any one of a C-shaped steel ring, an annular rubber ring, an annular plastic ring, or a composite structure in which at least two of these are combined. . Thereby, the material and structure of the elastic ring member to be used can be selected more effectively.
[0012]
In addition, when the female joint portion at the end of the tubular body formed by joining the sleeve and the male joint portion of the tubular body to be joined are provided with a concave and convex portion, the male joint portion and the female joint Rotational torque can be transmitted by the engagement of the concavo-convex portions of the portions.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of a pipe joint structure according to the present invention will be specifically described with reference to the drawings. FIG. 1 is a cross-sectional explanatory view showing the configuration of the first embodiment of the pipe joint structure according to the present invention, FIG. 2 is a cross-sectional explanatory view showing the configuration of the second embodiment of the pipe joint structure according to the present invention, FIG. 3 is a cross-sectional explanatory view showing the configuration of the third embodiment of the pipe joint structure according to the present invention, and FIG. 4 is a cross-sectional explanatory view showing the configuration of the fourth embodiment of the pipe joint structure according to the present invention. is there.
[0014]
In FIG. 1, 1 and 2 are a male joint part and a female joint part provided at the ends of the pipes to be connected. The female joint portion 2 has a large-diameter portion 3a having an inner diameter larger than the outer diameter of the tube to be joined (including the male joint portion 1), and a small diameter having an inner diameter substantially equal to the outer diameter of the tube to be joined. A sleeve 3 having a tapered space 7 continuous with the portion 3 b is joined by welding 8.
[0015]
That is, the tapered space 7 of the sleeve 3 is formed so that the inner diameter of the lower part is larger than the outer diameter of the pipe body to be joined and the inner diameter of the upper part is substantially equal to the outer diameter of the pipe body to be joined. .
[0016]
Inside the space 7 of the sleeve 3, a C-shaped steel ring 4 serving as an elastic ring member having an inner diameter smaller than the outer diameter of the pipe body (including the male joint portion 1) to be joined in a natural state is inserted in advance. Are arranged.
[0017]
The steel ring 4 of the present embodiment is formed in a trapezoidal cross section corresponding to the tapered surface in the sleeve 3, and is provided with a cutout at one location on the circumference of the annular ring to form a single ring.
[0018]
A tube formed by inserting an end portion (including the male joint portion 1) of a tubular body to be joined into the sleeve 3, and joining the sleeve 3 through the steel ring 4 through the end portion of the tubular body to be joined. Connect to the end of the body (including the female joint 2). If necessary, the open end portion of the sleeve 3 is welded 9 to the outer peripheral surface of the male joint portion 1.
[0019]
Since the steel ring 4 is formed in one piece, the steel ring 4 comes into close contact with the outer peripheral surface of the male joint portion 1 by the action of a spring. When an external force is applied in such a state, the compressive force is transmitted 100% effectively because the male and female joint portions 1 and 2 are joined through the steel ring 4 in contact with the entire cross section.
[0020]
Further, when a relative pulling displacement is generated in the male / female joint portions 1 and 2 when a tensile force is applied, the steel ring 4 tends to move upward in FIG. However, since the space 7 in the sleeve 3 is formed in a taper shape that becomes narrower as it goes upward, the steel ring 4 acts as a wedge and prevents the steel ring 4 from being pulled out. As a result, the pulling force can also be transmitted 100%.
[0021]
In addition, when a bending moment is applied, the bending moment can be transmitted 100% without any problem because the above-described compression force and pulling force are applied.
[0022]
FIG. 2 shows a second embodiment of a pipe joint structure according to the present invention, in which an O-ring 5 having a circular cross section such as an annular rubber ring or an annular plastic ring is used as an elastic ring member. Is.
[0023]
When such a rubber or plastic O-ring 5 is used, elastic deformation of the O-ring 5 itself can be expected. Therefore, unlike the steel ring 4 of the first embodiment, a crack is not provided and an annular shape is provided. The O-ring 5 can be used. Other configurations are the same as those in the first embodiment, and the same effects can be obtained.
[0024]
FIG. 3 shows a third embodiment of a pipe joint structure according to the present invention. As an elastic ring member, the steel ring 4 of the first embodiment and the annular rubber of the second embodiment are shown. This is a combination of an O-ring 5 such as a ring or an annular plastic ring. Other configurations are the same as those in the above-described embodiments, and the same effects can be obtained.
[0025]
These elastic ring members are any one of the aforementioned C-shaped steel ring 4, an annular rubber ring, and an annular plastic ring, or a combination of at least two of these. It can be a composite structure.
[0026]
FIG. 4 shows a fourth embodiment of a pipe joint structure according to the present invention. The female joint 2 at the end of the pipe formed by joining the sleeve 3 and the male pipe to be joined. The joint portion 1 is provided with concave and convex portions 6a and 3c that engage with each other.
[0027]
In the present embodiment, the sleeve 6 is fitted on the outer periphery of the male joint portion 1 and joined by welding 9. An uneven portion 6 a is formed at the end of the sleeve 6 joined to the outer periphery of the male joint portion 1 on the female joint portion 2 side, while the open end of the sleeve 3 joined to the outer periphery of the female joint portion 2 is formed. An uneven portion 3c that can be engaged with the uneven portion 6a is formed.
[0028]
Then, as in the above embodiments, the male joint portion 1 is inserted into the sleeve 3 to penetrate the steel ring 4 or O-ring 5 as an elastic ring member, and the concave and convex portions 6a and 3c are fitted. The female joint portion 2 is contacted and connected while being engaged. The concave and convex portions 6a and 3c can reliably join the male joint portion 1 and the female joint portion 2 by the action of the wedges of the steel ring 4 and the O-ring 5 serving as elastic ring members without performing welding or the like.
[0029]
As shown in FIG. 4, the male and female joint portions 1 and 2, as shown in FIG. 4, when rotational torque acts as an external force such as a pile or the like and the rotational torque needs to be transmitted by the male and female joint portions 1 and 2. By providing the concavo-convex portions 6a and 3c that fit together, the rotational torque can be transmitted by the male and female joint portions 1 and 2.
[0030]
In the above-described embodiment, an example of the pipe joint structure is shown, but the present invention can also be applied as a joint structure such as a ready-made concrete pile or a steel pipe pile as an example of the pipe body.
[0031]
【The invention's effect】
Since the present invention has the above-described configuration and operation, it is possible to provide a full-strength joint structure that can easily join the tubular bodies and can effectively transmit the external force.
[0032]
That is, by inserting the end of the tube to be joined into the sleeve joined to the end of the tube, the elastic ring member is confined within the tapered space formed by the sleeve, and a kind of wedge and Thus, the end of the tubular body formed by joining the sleeve and the end of the tubular body to be joined can be joined.
[0033]
That is, by simply inserting the end of the tube to be joined into the sleeve joined to the end of the tube, the joining between the end of the tube and the end of the tube to be joined is completed by one-touch. In addition, there is no need to give rotation or welding for joining.
[0034]
The elastic ring member may be any one of a C-shaped steel ring, an annular rubber ring, an annular plastic ring, or a composite structure in which at least two of these are combined. Thereby, the material and structure of the elastic ring member to be used can be selected more effectively.
[0035]
In addition, when the concave and convex portions that engage with each other are provided in the female joint portion at the end of the tubular body formed by joining the sleeve and the male joint portion of the tubular body to be joined, the male joint portion and the female joint portion Rotational torque can be transmitted by the engagement of the concavo-convex portions.
[Brief description of the drawings]
FIG. 1 is an explanatory cross-sectional view showing a configuration of a first embodiment of a pipe joint structure according to the present invention.
FIG. 2 is a cross-sectional explanatory view showing a configuration of a second embodiment of a pipe joint structure according to the present invention.
FIG. 3 is an explanatory cross-sectional view showing a configuration of a third embodiment of a pipe joint structure according to the present invention.
FIG. 4 is an explanatory cross-sectional view showing a configuration of a fourth embodiment of a pipe joint structure according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Male joint part 2 ... Female joint part 3 ... Sleeve 3a ... Large diameter part 3b ... Small diameter part 3c ... Uneven part 4 ... Steel ring 5 ... O ring 6 ... Sleeve 6a ... Uneven part 7 ... Space 8, 9 ... Welding

Claims (3)

管体の端部に下部の内径が接合すべき管体の外径よりも大きく、上部の内径がその接合すべき管体の外径とほぼ等しくなるように形成したテーパー状の空間を有するスリーブを接合し、前記接合すべき管体の外径よりも小さい内径を有する弾性リング部材を前記スリーブのテーパー状の空間内部に配置し、前記スリーブを接合してなる管体の端部に前記接合すべき管体の端部を前記弾性リング部材を貫通させて接続してなることを特徴とする管体の継構造。A sleeve having a tapered space formed so that the inner diameter of the lower part is larger than the outer diameter of the pipe body to be joined to the end of the pipe body, and the inner diameter of the upper part is substantially equal to the outer diameter of the pipe body to be joined. And an elastic ring member having an inner diameter smaller than the outer diameter of the tubular body to be joined is disposed inside the tapered space of the sleeve, and the joined portion is joined to the end of the tubular body formed by joining the sleeve. A tubular joint structure, wherein an end portion of a tubular body to be penetrated is connected through the elastic ring member. 前記弾性リング部材はC形状の鋼製リング、環状のゴムリング、環状のプラスチックリングのうちの何れかとするか、またはこれらのうちの少なくとも2つを組み合わせた複合構造としたことを特徴とする請求項1に記載の管体の継構造。The elastic ring member may be any one of a C-shaped steel ring, an annular rubber ring, an annular plastic ring, or a composite structure in which at least two of them are combined. Item 2. The joint structure of a tubular body according to Item 1. 前記スリーブを接合して形成した管体の端部のメス継手部及び前記接合すべき管体のオス継手部に互いに係合する凹凸部を設けたことを特徴とする請求項1または請求項2に記載の管体の継構造。3. An uneven portion engaging with each other is provided at a female joint portion at an end portion of a tubular body formed by joining the sleeve and a male joint portion of the tubular body to be joined. The joint structure of a tubular body described in 1.
JP2003164867A 2003-06-10 2003-06-10 Joint structure for tube body Pending JP2005003029A (en)

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Cited By (9)

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Publication number Priority date Publication date Assignee Title
CN101949149A (en) * 2010-09-17 2011-01-19 林基 Built-in mechanical quick coupling device for prestressed concrete tubular pile
CN102410412A (en) * 2010-09-21 2012-04-11 史玉成 Cu-Al pipe joint
JP6134430B1 (en) * 2016-10-18 2017-05-24 ウィング工業株式会社 Steel pipe fitting device
JP2018523078A (en) * 2015-08-10 2018-08-16 浙江三花智能控制股▲ふん▼有限公司Zhejiang Sanhua Intelligent Controls CO.,Ltd Valve housing assembly & valve
WO2019004345A1 (en) * 2017-06-29 2019-01-03 株式会社クボタ Hand part for holding baggage, and assistance implement
JP2019011154A (en) * 2017-06-29 2019-01-24 株式会社クボタ Baggage holding hand part
JP2019011152A (en) * 2017-06-29 2019-01-24 株式会社クボタ Assist instrument
JP2019011151A (en) * 2017-06-29 2019-01-24 株式会社クボタ Assist instrument
JP2020125587A (en) * 2019-02-01 2020-08-20 次男 板垣 Steel pipe diameter conversion ring

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Publication number Priority date Publication date Assignee Title
CN101949149A (en) * 2010-09-17 2011-01-19 林基 Built-in mechanical quick coupling device for prestressed concrete tubular pile
CN102410412A (en) * 2010-09-21 2012-04-11 史玉成 Cu-Al pipe joint
JP2018523078A (en) * 2015-08-10 2018-08-16 浙江三花智能控制股▲ふん▼有限公司Zhejiang Sanhua Intelligent Controls CO.,Ltd Valve housing assembly & valve
GB2578342A (en) * 2016-10-18 2020-05-06 Asahi Kasei Constr Mat Corp Joint device for steel pipe
WO2018074374A1 (en) * 2016-10-18 2018-04-26 ウィング工業株式会社 Joint device for steel pipe
JP2018066152A (en) * 2016-10-18 2018-04-26 ウィング工業株式会社 Steel tube joint device
US11668063B2 (en) 2016-10-18 2023-06-06 Asahi Kasei Construction Materials Corporation Steel pipe coupling device for steel pipes
GB2578342B (en) * 2016-10-18 2021-09-22 Asahi Kasei Constr Mat Corp Joint device for steel pipe
JP6134430B1 (en) * 2016-10-18 2017-05-24 ウィング工業株式会社 Steel pipe fitting device
KR20200003142A (en) * 2017-06-29 2020-01-08 가부시끼 가이샤 구보다 Hand part and assist mechanism for baggage holding
JP2019011151A (en) * 2017-06-29 2019-01-24 株式会社クボタ Assist instrument
CN110740967A (en) * 2017-06-29 2020-01-31 株式会社久保田 Hand and assisting tool for holding goods
JP2019011152A (en) * 2017-06-29 2019-01-24 株式会社クボタ Assist instrument
JP2019011154A (en) * 2017-06-29 2019-01-24 株式会社クボタ Baggage holding hand part
KR102450298B1 (en) * 2017-06-29 2022-10-04 가부시끼 가이샤 구보다 Hand part and assist mechanism for baggage holding
WO2019004345A1 (en) * 2017-06-29 2019-01-03 株式会社クボタ Hand part for holding baggage, and assistance implement
JP2020125587A (en) * 2019-02-01 2020-08-20 次男 板垣 Steel pipe diameter conversion ring
JP7184285B2 (en) 2019-02-01 2022-12-06 富士商事株式会社 Steel pipe diameter conversion ring

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