JP2007120122A - Pipe connecting implement - Google Patents

Pipe connecting implement Download PDF

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Publication number
JP2007120122A
JP2007120122A JP2005313113A JP2005313113A JP2007120122A JP 2007120122 A JP2007120122 A JP 2007120122A JP 2005313113 A JP2005313113 A JP 2005313113A JP 2005313113 A JP2005313113 A JP 2005313113A JP 2007120122 A JP2007120122 A JP 2007120122A
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Japan
Prior art keywords
pipe
diameter
cylindrical body
outer diameter
diameter portion
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Yoshio Wakamei
若命善雄
Kenzo Saiin
斎院賢三
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SEKKEISHITSU SOIL KK
Soil Design Co Ltd
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SEKKEISHITSU SOIL KK
Soil Design Co Ltd
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Priority to JP2005313113A priority Critical patent/JP2007120122A/en
Publication of JP2007120122A publication Critical patent/JP2007120122A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a device which enables pipes P and P to be connected efficiently and rapidly together in a coaxial manner, even in a narrow space using simple operations and smoothly pressed in using low pressure. <P>SOLUTION: The circular-cross-section pipe P is connected and pressurized to the connecting implement for the pipe P, in which a plurality of inclined parts 2, in such a shape as to gradually get away from the central axis, toward a flange part 3 from a large-diameter part 11 of a cylindrical body 1, are formed in the object positions of the central axis. This makes the circular-cross-section pipe P in the connecting implement end up being deformed in an oval shape. Since the outside diameter of a small-diameter part 12 is smaller than that of the large-diameter part 11, the reduced part of the pipe P, which is deformed into oval shape, is engaged with a step 14 between the small-diameter and large-diameter parts 12 and 11, when the pipe P is pulled up, so that the pipe P becomes disabled of being pulled out. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、パイプの接続具に関するものである。ここで「パイプ」とは主に地盤に打ち込む鋼製の管体をいう。
The present invention relates to a pipe connector. Here, the “pipe” is a steel pipe body that is mainly driven into the ground.

特に本発明の対象は、傾斜した家屋を下から押し上げるアンダーピーニング工法において、押し上げ力の反力を受けるパイプの接続に関するものである。
アンダーピーニング工法の施工法の一例を図１０に示すと、まず対象家屋の基礎Ａの側面と直下を掘削して作業スペースＢを形成する。
次に、家屋の基礎Ａの直下において底面に向けて最初のパイプＰ１を圧入する。
このパイプＰ１は基礎Ａの直下に直立させ、その上を圧入する装置で加圧するものであるから、きわめて限定された範囲の長さのものしか扱うことができない。
そのために短いパイプＰ１を圧入し、その上に次のパイプＰ２を順次溶接Ｃして延長する方法を採用している。
アンダーピーニング工法はこうして圧入したパイプ群の上にジャッキＤを設置し、このジャッキＤにより、パイプ群に反力を取って家屋の基礎Ａを押し上げて沈下を修正するものである。
In particular, the subject of the present invention relates to the connection of a pipe that receives the reaction force of the pushing-up force in the underpeening method for pushing up an inclined house from below.
When an example of the construction method of the underpeening method is shown in FIG. 10, first, a work space B is formed by excavating the side surface of the foundation A of the target house and directly below.
Next, the first pipe P <b> 1 is press-fitted toward the bottom just below the foundation A of the house.
Since this pipe P1 stands upright directly below the foundation A and is pressurized by a device that press-fits the pipe P1, only pipes having a very limited length can be handled.
For this purpose, a method is adopted in which a short pipe P1 is press-fitted and the next pipe P2 is sequentially welded and extended thereon.
In the underpeening method, a jack D is installed on the pipe group thus press-fitted, and by using the jack D, a reaction force is applied to the pipe group to push up the foundation A of the house to correct the settlement.

前記した従来のアンダーピーニング工法におけるパイプの接続方法では次のような問題点がある。
＜１＞ 作業スペースは家屋の側部を掘削して確保するものであるが、一般には用地に余裕のある家屋は少なく、そのためにきわめて狭い作業スペースとなる。そのような狭い作業スペースにおいて高熱を発生する溶接作業を行うことはきわめて劣悪な環境での作業となり、作業効率は悪く、作業員の健康上も好ましくない。
＜２＞ 継ぎ足したパイプ群を地中に圧入する場合に、狭い用地に大型の装置を設置することはできないから、できるだけ小さい圧力で圧入できる必要がある。そのためにはパイプ群の外周は平滑で抵抗が少ない方がよいが、パイプの接続部の溶接の肉盛りが外側に向けて突出することから圧入時の抵抗となり、小さい圧力による圧入の妨げとなる。
＜３＞ アンダーピーニング工法用のパイプでは、パイプに伝わる鉛直荷重は１００％伝達させる必要があるが、引張力は施工時に接続したパイプが落下しない程度の強度を備えていれば十分であり、また曲げ強度も基礎とパイプを接続しないのでほとんど考慮する必要がない、という機能を備えたパイプである。したがってこのような機能を達成できればよいのだから、従来の接続具の構造はそれ以上の過剰な機能を備えていたということができる。
The pipe connection method in the conventional underpeening method described above has the following problems.
<1> The work space is secured by excavating the side of the house, but generally there are few houses on the site, which makes the work space extremely narrow. Performing a welding operation that generates high heat in such a narrow work space is a work in a very poor environment, the work efficiency is poor, and it is not preferable for the health of the worker.
<2> When a joined pipe group is press-fitted into the ground, a large device cannot be installed on a narrow site, so it is necessary to be able to press-fit with as little pressure as possible. For that purpose, the outer circumference of the pipe group should be smooth and have less resistance, but the weld build-up of the pipe connection part protrudes outwards, so it becomes resistance at the time of press-fitting and hinders press-fitting by a small pressure. .
<3> In the pipe for the underpeening method, it is necessary to transmit 100% of the vertical load transmitted to the pipe, but it is sufficient that the tensile force is strong enough to prevent the pipe connected during the construction from dropping. It is a pipe with the function that bending strength is hardly considered because the foundation and pipe are not connected. Therefore, since it is only necessary to achieve such a function, it can be said that the structure of the conventional connector has an excessive function beyond that.

上記のような課題を解決するために、本発明のパイプの接続具は、パイプとパイプを同軸上に接続するための接続具であり、筒体と、鍔部とより構成し、筒体は中空の管体であり、外径の大きい大径部と、外径が大径部の外径より小さい小径部とによって構成し、大径部は筒体の両端に位置し、小径部は筒体の中央に位置し、大径部の外径は、接続対象のパイプの内径にほぼ等しく、鍔部は、筒体の小径部の外周に設けた、筒体の大径部の外径よりも大きい外径の棚状の板であり、筒体の大径部から鍔部に向けて、複数箇所に傾斜部を形成し、この傾斜部は、徐々に筒体の中心軸から距離の離れる形状の斜面体であり、かつ筒体の中心軸から対象位置に配置してあるパイプの接続具を特徴としたものである。
In order to solve the problems as described above, the pipe connector of the present invention is a connector for connecting a pipe and a pipe on the same axis, and includes a cylinder and a collar part. It is a hollow tube, and consists of a large-diameter portion with a large outer diameter and a small-diameter portion whose outer diameter is smaller than the outer diameter of the large-diameter portion. The large-diameter portion is located at both ends of the cylinder, and the small-diameter portion is a cylinder. Located at the center of the body, the outer diameter of the large-diameter portion is approximately equal to the inner diameter of the pipe to be connected, and the flange portion is larger than the outer diameter of the large-diameter portion of the cylindrical body provided on the outer periphery of the small-diameter portion of the cylindrical body. Is a shelf-like plate having a large outer diameter, and inclined portions are formed at a plurality of locations from the large-diameter portion of the cylindrical body toward the flange portion, and this inclined portion gradually moves away from the central axis of the cylindrical body. It has a shape of a sloped body and is characterized by a pipe connector disposed at a target position from the central axis of the cylinder.

本発明のパイプの接続具は以上説明したようになるから次のような効果を得ることができる。
＜１＞ 狭い作業空間においても、きわめて簡単な作業によってパイプとパイプを同軸上に接続することができる。
＜２＞ パイプの表面に、外向きに突出するような部分が生じないから、小さい圧入力によってスムーズに圧入することができる。
Since the pipe connector of the present invention is as described above, the following effects can be obtained.
<1> Even in a narrow work space, pipes can be connected on the same axis by a very simple work.
<2> Since a portion that protrudes outward does not occur on the surface of the pipe, it can be smoothly press-fitted with a small pressure input.

以下図面を参照にしながら本発明の好適な実施の形態を詳細に説明する。   DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

＜１＞全体の構成。
本発明の対象は、パイプとパイプを同軸上に接続するための接続具であり、
筒体１と、その外周に鍔状に突設した鍔部３とより構成する。 <1> Overall configuration.
The subject of the present invention is a connector for connecting a pipe and a pipe coaxially,
It is comprised from the cylinder 1 and the collar part 3 protrudingly provided in the shape of a collar on the outer periphery.

＜２＞筒体１。
筒体１は中空の管体であり、外径の大きい大径部１１と、外径が大径部１１の外径より小さい小径部１２とによって構成する。 <2> Tube 1.
The cylindrical body 1 is a hollow tube, and includes a large-diameter portion 11 having a large outer diameter and a small-diameter portion 12 having an outer diameter smaller than the outer diameter of the large-diameter portion 11.

＜２−１＞大径部１１。
大径部１１は筒体１の両端に位置する。
大径部１１の外径は、接続対象のパイプＰの内径にほぼ等しく形成する。
大径部１１の開放側の外周は、開放側に向けて徐々にその外径を縮小した円錐部１３を形成してある。
接続する対象のパイプＰの端が、まずこの円錐部１３に係合することになり、スムーズなパイプＰの外挿が可能となる。 <2-1> Large diameter part 11.
The large diameter portion 11 is located at both ends of the cylinder 1.
The outer diameter of the large diameter portion 11 is formed to be approximately equal to the inner diameter of the pipe P to be connected.
The outer periphery on the open side of the large diameter portion 11 forms a conical portion 13 whose outer diameter is gradually reduced toward the open side.
The end of the pipe P to be connected is first engaged with the conical portion 13, so that the smooth extrapolation of the pipe P is possible.

＜２−２＞小径部１２。
小径部１２は筒体１の中央に位置し、大径部１１よりも外径が小さい。
したがって大径部１１と小径部１２との境界には、段差部１４が生じる。
この段差部１４において、後述するように縮小したパイプＰの縮小部分が係合することになる。 <2-2> Small diameter part 12.
The small diameter portion 12 is located at the center of the cylindrical body 1 and has an outer diameter smaller than that of the large diameter portion 11.
Therefore, a step 14 is formed at the boundary between the large diameter portion 11 and the small diameter portion 12.
In this stepped portion 14, the reduced portion of the pipe P that has been reduced as will be described later is engaged.

＜３＞鍔部３。
鍔部３は、筒体１の小径部１２の中央に、その外周に棚状に設けた板体である。
鍔部３の外径は、小径部１２の外径より大きいだけではなく、大径部１１の外径よりも大きく形成する。 <3> Buttocks 3.
The collar portion 3 is a plate body provided in the center of the small diameter portion 12 of the cylindrical body 1 in a shelf shape on the outer periphery thereof.
The outer diameter of the flange portion 3 is not only larger than the outer diameter of the small diameter portion 12 but also larger than the outer diameter of the large diameter portion 11.

＜４＞傾斜部２。
筒体１の大径部１１から鍔部３に向けて、傾斜部２を形成する。
傾斜部２の形成位置は、筒体１の円形断面の対称位置である。
この傾斜部２は、徐々に筒体１の中心軸から距離の離れる形状の斜面体である。
このように傾斜部２の始端２１は、大径部１１の外周面であり、傾斜部２の終端２２は鍔部３の表面である。 <4> Inclined portion 2.
An inclined portion 2 is formed from the large diameter portion 11 of the cylindrical body 1 toward the flange portion 3.
The formation position of the inclined portion 2 is a symmetrical position of the circular cross section of the cylindrical body 1.
The inclined portion 2 is an inclined body having a shape that gradually separates from the central axis of the cylindrical body 1.
Thus, the starting end 21 of the inclined portion 2 is the outer peripheral surface of the large-diameter portion 11, and the terminal end 22 of the inclined portion 2 is the surface of the flange portion 3.

＜５＞相互の寸法。
鍔部３の外周縁３１と、傾斜部２の終端２２との間隔は、接続対象のパイプＰの肉厚とほぼ等しく形成してある。
また、一方の傾斜部２の終端２２から、対称位置にある傾斜部２の終端２２までの距離から、大径部１１の外径を引いた値が、大径部１１の外径から小径部１２の外径を引いた値とほぼ等しく構成してある。
そのように構成することによって、パイプＰを接続具に挿入した場合以下のような関係が成立する。
１） 拡大寸法＝[一方の傾斜部終端２２から他方の傾斜部終端２２までの距離]から[大径部１１の外径]を引いた値。
２） 縮小寸法＝[大径部１１の外径]から[小径部１２の外径]を引いた値。
３） 拡大寸法≒縮小寸法 <5> Mutual dimensions.
The distance between the outer peripheral edge 31 of the flange 3 and the end 22 of the inclined portion 2 is formed to be substantially equal to the thickness of the pipe P to be connected.
Also, the value obtained by subtracting the outer diameter of the large diameter portion 11 from the distance from the end 22 of the one inclined portion 2 to the end 22 of the inclined portion 2 at the symmetrical position is the small diameter portion from the outer diameter of the large diameter portion 11. It is constituted substantially equal to the value obtained by subtracting the outer diameter of 12.
With such a configuration, the following relationship is established when the pipe P is inserted into the connector.
1) Enlarged dimension = a value obtained by subtracting [the outer diameter of the large-diameter portion 11] from [the distance from one inclined portion end 22 to the other inclined portion end 22].
2) Reduction dimension = a value obtained by subtracting [the outer diameter of the small-diameter portion 12] from [the outer diameter of the large-diameter portion 11].
3) Enlarged dimension ≒ reduced dimension

＜６＞パイプＰの挿入。
次に本発明の接続具が圧入してある１本のパイプＰの上端にすでに固定してあるものとし、その上から新たなパイプＰを接続する場合を例として接続方法を説明する。
上記の構成の接続具の筒体１の端部から、接続すべき新たなパイプＰの端を外挿する。
筒体１の開放側は、開放側へ向けて外径が徐々に縮小する円錐部１３として形成してあるから、大径部１１の外径とほぼ等しい内径を有するパイプＰであってもスムーズに大径部１１へ挿入することができる。 <6> Insert the pipe P.
Next, a connection method will be described by taking as an example a case where a new pipe P is connected from the upper end of one pipe P into which the connection tool of the present invention has been press-fitted.
The end of a new pipe P to be connected is extrapolated from the end of the tubular body 1 of the connector having the above-described configuration.
Since the open side of the cylindrical body 1 is formed as a conical portion 13 whose outer diameter gradually decreases toward the open side, even a pipe P having an inner diameter substantially equal to the outer diameter of the large diameter portion 11 is smooth. Can be inserted into the large-diameter portion 11.

＜７＞パイプＰの長軸の拡大。（図３〜図５）
パイプＰの他端から所定の圧力で加圧すると、パイプＰの先端は傾斜部の始端２１に到達する。
そのまま加圧を続けると、パイプＰの内径よりも、対称位置にある傾斜部２間の間隔が徐々に広くなっているから、パイプＰの断面は徐々に、両側の傾斜部２間を長軸ａとした楕円形に変形する。（図９） <7> Expansion of the long axis of the pipe P. (FIGS. 3 to 5)
When a predetermined pressure is applied from the other end of the pipe P, the tip of the pipe P reaches the start end 21 of the inclined portion.
If the pressurization is continued as it is, the interval between the inclined portions 2 at the symmetric position gradually becomes wider than the inner diameter of the pipe P, so that the cross section of the pipe P gradually extends between the inclined portions 2 on both sides. It is transformed into an oval shape a. (Fig. 9)

＜８＞パイプＰの短軸の縮小。（図６〜図８）
パイプＰの断面が円形から楕円形に変形して長軸ａは長くなることに比例して短軸ｂは短くなる。（図９）
パイプＰの断面における短軸ｂに相当する位置において、筒体１は小径部１２を形成しているから、パイプＰの先端側は小径部１２の外周面の側に引き寄せられてさらに短軸ｂを縮小してゆく。 <8> Reduction of the short axis of the pipe P. (FIGS. 6 to 8)
The short axis b is shortened in proportion to the long axis a becoming longer as the cross section of the pipe P is deformed from a circle to an ellipse. (Fig. 9)
Since the cylindrical body 1 forms the small diameter portion 12 at a position corresponding to the short axis b in the cross section of the pipe P, the tip side of the pipe P is drawn toward the outer peripheral surface side of the small diameter portion 12 and further the short axis b. Will shrink.

＜９＞接続の完了。
パイプＰの端部において、楕円形の短軸ｂに相当する部分は、筒体１の小径部１２の外周面に接する程度まで縮小する。
小径部１２は、大径部１１よりも外径が小さいから、パイプＰを引き上げた場合に、パイプＰの縮小部分が小径部１２と大径部１１の段差１４に係合してしまい、引き抜くことができない状態となる。
こうしてパイプＰと接続具との接続が完了する。
以上のように、この接続作業は、パイプＰを接続具に圧入するだけのきわめて簡単な作業であり、狭い空間においても効率よく迅速に接続を行うことができる。
<9> Connection complete.
At the end of the pipe P, the portion corresponding to the elliptical short axis b is reduced to the extent that it contacts the outer peripheral surface of the small diameter portion 12 of the cylindrical body 1.
Since the outer diameter of the small diameter portion 12 is smaller than that of the large diameter portion 11, when the pipe P is pulled up, the reduced portion of the pipe P engages with the step 14 between the small diameter portion 12 and the large diameter portion 11 and is pulled out. It becomes a state that can not be.
Thus, the connection between the pipe P and the connection tool is completed.
As described above, this connection operation is an extremely simple operation in which the pipe P is press-fitted into the connection tool, and the connection can be performed efficiently and quickly even in a narrow space.

本発明のパイプの接続具の実施例の説明図。Explanatory drawing of the Example of the connector of the pipe of this invention. その側面図。The side view. パイプの内径が拡大する状態の説明図。Explanatory drawing of the state which the internal diameter of a pipe expands. パイプの内径が拡大する状態の説明図。Explanatory drawing of the state which the internal diameter of a pipe expands. パイプの内径が拡大する状態の説明図。Explanatory drawing of the state which the internal diameter of a pipe expands. パイプの内径が縮小する状態の説明図。Explanatory drawing of the state which the internal diameter of a pipe shrinks. パイプの内径が縮小する状態の説明図。Explanatory drawing of the state which the internal diameter of a pipe shrinks. パイプの内径が縮小する状態の説明図。Explanatory drawing of the state which the internal diameter of a pipe shrinks. パイプの断面が円形から楕円形に変形する状態の説明図。Explanatory drawing of the state which the cross section of a pipe deform | transforms from a circle to an ellipse. アンダーピーニング工法の説明図。Explanatory drawing of the underpeening method.

符号の説明Explanation of symbols

１：筒体
２：傾斜部
３：鍔部
Ｐ：パイプ 1: Cylindrical body 2: Inclined part 3: Ridge part P: Pipe

Claims (3)

パイプとパイプを同軸上に接続するための接続具であり、
筒体と、鍔部とより構成し、
筒体は中空の管体であり、外径の大きい大径部と、外径が大径部の外径より小さい小径部とによって構成し、
大径部は筒体の両端に位置し、小径部は筒体の中央に位置し、
大径部の外径は、接続対象のパイプの内径にほぼ等しく、
鍔部は、筒体の小径部の外周に設けた、筒体の大径部の外径よりも大きい外径の棚状の板であり、
筒体の大径部から鍔部に向けて、複数箇所に傾斜部を形成し、
この傾斜部は、徐々に筒体の中心軸から距離の離れる形状の斜面体であり、かつ筒体の中心軸から対象位置に配置してある、
パイプの接続具。
It is a connector for connecting pipes and pipes on the same axis,
It consists of a cylinder and a buttock,
The cylindrical body is a hollow tube, and is constituted by a large diameter portion having a large outer diameter and a small diameter portion having an outer diameter smaller than the outer diameter of the large diameter portion,
The large diameter part is located at both ends of the cylinder, the small diameter part is located at the center of the cylinder,
The outer diameter of the large diameter part is almost equal to the inner diameter of the pipe to be connected,
The collar portion is a shelf-like plate having an outer diameter larger than the outer diameter of the large-diameter portion of the cylindrical body, provided on the outer periphery of the small-diameter portion of the cylindrical body,
From the large-diameter portion of the cylindrical body toward the flange, forming inclined portions at a plurality of locations,
The inclined portion is a sloped body having a shape gradually away from the central axis of the cylindrical body, and is disposed at the target position from the central axis of the cylindrical body.
Pipe fittings.
鍔部の外周縁と、
傾斜部と鍔部の接点との間隔を、
接続対象のパイプの肉厚とほぼ等しく形成した、
請求項１記載の、パイプの接続具。
The outer periphery of the buttocks,
The distance between the inclined part and the contact point of the collar part,
Formed almost equal to the wall thickness of the pipe to be connected,
The pipe connector according to claim 1.
両側の傾斜部の終端の距離から、大径部の外径を引いた値が、
小径部の外径とほぼ等しく構成した、
請求項１記載の、パイプの接続具。 The value obtained by subtracting the outer diameter of the large diameter part from the distance of the end of the inclined part on both sides is
Constructed approximately equal to the outer diameter of the small diameter part,
The pipe connector according to claim 1.
JP2005313113A 2005-10-27 2005-10-27 Pipe connecting implement Pending JP2007120122A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Publications (1)

Publication Number Publication Date
JP2007120122A true JP2007120122A (en) 2007-05-17

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JP2005313113A Pending JP2007120122A (en) 2005-10-27 2005-10-27 Pipe connecting implement

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Country Link
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010137294A1 (en) * 2009-05-25 2010-12-02 株式会社新生工務 Steel pipe joining structure, steel pipe joining method, and joint members
AT516162A4 (en) * 2014-12-05 2016-03-15 Tiroler Rohre GmbH Rammpfahl with a substantially cylindrical shaft
JP5892677B1 (en) * 2015-05-25 2016-03-23 樋口　雅久 Tip for friction pile
JP2016130389A (en) * 2015-01-12 2016-07-21 光明 新井 Connector between pile and single pipe

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010137294A1 (en) * 2009-05-25 2010-12-02 株式会社新生工務 Steel pipe joining structure, steel pipe joining method, and joint members
JP5416208B2 (en) * 2009-05-25 2014-02-12 株式会社新生工務 Steel pipe connection structure, steel pipe connection method, and joint member
AT516162A4 (en) * 2014-12-05 2016-03-15 Tiroler Rohre GmbH Rammpfahl with a substantially cylindrical shaft
AT516162B1 (en) * 2014-12-05 2016-03-15 Tiroler Rohre GmbH Rammpfahl with a substantially cylindrical shaft
US9593458B2 (en) 2014-12-05 2017-03-14 Tiroler Rohre GmbH Pile comprising a substantially cylindrical shaft
JP2016130389A (en) * 2015-01-12 2016-07-21 光明 新井 Connector between pile and single pipe
JP5892677B1 (en) * 2015-05-25 2016-03-23 樋口　雅久 Tip for friction pile

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