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
joint structure
end
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
Kunihiro Haseyama
Hiroshi Murakami
浩 村上
國廣 長谷山
Original Assignee
Asahi Kasei Construction Materials Co Ltd
Hiraoka Kinzoku Kogyo Kk
平岡金属工業株式会社
旭化成建材株式会社
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 Co Ltd, Hiraoka Kinzoku Kogyo Kk, 平岡金属工業株式会社, 旭化成建材株式会社 filed Critical Asahi Kasei Construction Materials Co Ltd
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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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]
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)

  1. 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.
  2. 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.
  3. 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)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003164867A JP2005003029A (en) 2003-06-10 2003-06-10 Joint structure for tube body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003164867A JP2005003029A (en) 2003-06-10 2003-06-10 Joint structure for tube body

Publications (1)

Publication Number Publication Date
JP2005003029A true JP2005003029A (en) 2005-01-06

Family

ID=34091522

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003164867A Pending JP2005003029A (en) 2003-06-10 2003-06-10 Joint structure for tube body

Country Status (1)

Country Link
JP (1) JP2005003029A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
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

Cited By (7)

* Cited by examiner, † Cited by third party
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
JP6134430B1 (en) * 2016-10-18 2017-05-24 ウィング工業株式会社 Steel pipe fitting device
WO2018074374A1 (en) * 2016-10-18 2018-04-26 ウィング工業株式会社 Joint device for steel pipe
GB2578342A (en) * 2016-10-18 2020-05-06 Asahi Kasei Construction Mat Corporation Joint device for steel pipe
WO2019004345A1 (en) * 2017-06-29 2019-01-03 株式会社クボタ Hand part for holding baggage, and assistance implement

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