JPH116588A - Pipe made of composite material - Google Patents
Pipe made of composite materialInfo
- Publication number
- JPH116588A JPH116588A JP9159575A JP15957597A JPH116588A JP H116588 A JPH116588 A JP H116588A JP 9159575 A JP9159575 A JP 9159575A JP 15957597 A JP15957597 A JP 15957597A JP H116588 A JPH116588 A JP H116588A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- reduced
- short
- reduced portion
- short tube
- 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.)
- Granted
Links
Landscapes
- Flanged Joints, Insulating Joints, And Other Joints (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Laminated Bodies (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、複合材製パイプに
関し、更に詳しくは接合部を改良した繊維強化プラスチ
ック製パイプに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite pipe, and more particularly, to a fiber reinforced plastic pipe having an improved joint.
【0002】[0002]
【従来の技術】一般にガラス繊維や炭素繊維等の高強度
の繊維を使用して強化したプラスチックである複合材製
パイプ(以下FRPパイプという)は、他の構造物と接
合して使用される場合が多いが、その場合はFRPパイ
プの端部にプラスチック製あるいは金属製のフランジを
接着固定してこのフランジと構造物との間をボルト締め
する方法が行なわれている。また、FRPパイプどうし
の接合にはフランジどうしをボルト締めしている。2. Description of the Related Art In general, composite pipes (hereinafter referred to as FRP pipes), which are plastics reinforced with high-strength fibers such as glass fibers and carbon fibers, are used when joined to other structures. In this case, a plastic or metal flange is bonded and fixed to the end of the FRP pipe, and a bolt is tightened between the flange and the structure. The flanges are bolted together to join the FRP pipes.
【0003】更に、FRPパイプの端部の内径を接合す
るパイプの外径に合わせて直径を拡開し、これを前記パ
イプに嵌合して接着剤で接合する方法が行なわれてい
る。[0003] Further, a method has been practiced in which the inner diameter of the end of the FRP pipe is expanded in accordance with the outer diameter of the pipe to be joined, which is fitted to the pipe and joined with an adhesive.
【0004】[0004]
【発明の解決すべき課題】前記のようにFRPパイプの
端部にフランジを接着する方法においては、フランジ部
分まで繊維層を設けることができないためにFRPパイ
プとフランジとの接合強度があまり高くなく、接合強度
を高めるためにはフランジにパイプ部分と接合する短管
部を持つ特種な構造にしなければならない。しかし、こ
のようなフランジを使用してもパイプの軸方向に作用す
る張力に対して十分に対抗することができない。In the method of bonding the flange to the end of the FRP pipe as described above, since the fiber layer cannot be provided up to the flange portion, the joining strength between the FRP pipe and the flange is not so high. In order to increase the joining strength, a special structure having a short pipe portion to be joined to the pipe portion on the flange must be used. However, even if such a flange is used, it cannot sufficiently counter the tension acting in the axial direction of the pipe.
【0005】一方、接合するパイプに合わせてFRPパ
イプの端部を拡大する場合は、この接合部に合わせてF
RPパイプの端部を拡大する必要があり、正確な寸法の
パイプ部分を形成することが困難である上に製造コスト
が高くなり、更に製品管理上に問題がある。On the other hand, when the end of the FRP pipe is enlarged in accordance with the pipe to be joined, the FRP
It is necessary to enlarge the end of the RP pipe, which makes it difficult to form a pipe section of accurate dimensions, increases the manufacturing cost, and has a problem in product management.
【0006】近来、比較的深海域での海洋開発が活発と
なっており、その一つにライザー管を用いた石油掘削が
ある。このライザー管は長さが2000mにも達する場
合があり、ライザー管が金属管である場合はその重量が
大きく、従って大きな軸方向に張力(軸力)が発生する
ために厚肉の金属管を使用しなければならないという問
題がある。そこでこの大きな軸力の発生を軽減するため
にFRPパイプを使用する方法が検討されている。In recent years, marine development in relatively deep sea areas has been active, and one of them is oil drilling using riser pipes. This riser pipe may have a length of up to 2000 m, and when the riser pipe is a metal pipe, its weight is large, and thus a large axial tension (axial force) is generated. There is a problem that must be used. Therefore, a method of using an FRP pipe to reduce the generation of the large axial force has been studied.
【0007】FRPパイプは金属管に比較して軽量であ
ることから、金属管に比較して軸力を大幅に低減するこ
とが可能であるが、接合部の構造に問題があり、その強
度を向上させなければならないという問題がある。本発
明は、端部にフランジ、特に金属製フランジを簡単に取
付けることができるFRPパイプを提供することを目的
とするものである。[0007] Since the FRP pipe is lighter in weight than the metal pipe, it is possible to greatly reduce the axial force as compared with the metal pipe. However, there is a problem in the structure of the joint, and the strength is reduced. There is a problem that must be improved. An object of the present invention is to provide an FRP pipe in which a flange, particularly a metal flange, can be easily attached to an end.
【0008】[0008]
A)本発明は前記した従来技術の問題点を解決するため
になされたものであって、少なくとも一方の端部に金属
製の短管を配置し、該短管の表面を覆って繊維層を形成
した複合材製パイプ体であって、前記短管は中央部に大
径部を、その両側に第1の縮小部と第2の縮小部を形成
しており、該第1の縮小部は大径部から該短管の端部に
向かって縮小した表面に形成し、該第1の縮小部によっ
て前記パイプ体に発生する軸力を半径方向の力に変換し
て負担するように構成しており、更に前記短管にフラン
ジ体を固定して構成している。A) The present invention has been made to solve the above-mentioned problems of the prior art, and a metal short tube is arranged at at least one end, and a fiber layer is covered over the surface of the short tube. In the formed composite pipe body, the short pipe has a large-diameter portion at a central portion, and a first reduced portion and a second reduced portion formed on both sides thereof, and the first reduced portion is The pipe is formed on a surface reduced from the large diameter portion toward the end of the short pipe, and the first reduced portion converts an axial force generated in the pipe body into a radial force and bears the same. Further, a flange body is fixed to the short pipe.
【0009】B)前記金属製の短管の第1の縮小部の内
面にネジ部が形成され、該ネジ部にフランジ体の短管部
に形成したネジ部を螺合して固定して構成している。ま
た、前記金属製の短管の第1の縮小部は、該短管の端部
に向かって断面が円弧状に縮小した表面に形成してい
る。 C)また、前記金属製の短管の第1の縮小部は、該短管
の端部に向かって断面が円錐状に縮小した表面に形成し
ている。B) A screw portion is formed on the inner surface of the first reduced portion of the metal short tube, and the screw portion formed on the short tube portion of the flange body is screwed and fixed to the screw portion. doing. Further, the first reduced portion of the metal short tube is formed on a surface whose cross section is reduced in an arc shape toward the end of the short tube. C) The first reduced portion of the metal short tube is formed on a surface whose cross section is conically reduced toward the end of the short tube.
【0010】D)更に、少なくとも一方の端部に金属製
の短管を配置し、該短管の表面を覆って繊維層を形成し
た複合材製パイプ体であって、前記短管は中央部に大径
部を、その両側に第1の縮小部と第2の縮小部を形成し
ており、該第1の縮小部は大径部から該短管の端部に向
かって縮小した表面を形成し、該第1の縮小部によって
前記パイプ体に発生する軸力を半径方向の力に変換して
負担するように構成しており、少なくとも前記第1の縮
小部に管状部が前記繊維層より外部に突出して延長され
ており、この延長された部分にフランジ体を固定してい
る。D) A composite pipe body in which a short pipe made of metal is disposed at at least one end and a fiber layer is formed so as to cover the surface of the short pipe, and the short pipe is formed in a central portion. A first reduced portion and a second reduced portion are formed on both sides of the large diameter portion, and the first reduced portion has a surface reduced from the large diameter portion toward the end of the short pipe. The first reduced portion is configured to convert the axial force generated in the pipe body into a radial force and bear the same, and at least the first reduced portion is provided with the tubular portion at the fiber layer. The flange body is extended so as to protrude outward, and a flange body is fixed to the extended portion.
【0011】E)前記第1の縮小部の断面形状は円弧状
あるいは円錐状、更にこれらに類似の形状に変形する場
合もあるが、本発明においては、この第1の縮小部によ
って前記パイプ体に発生する軸力を、半径方向の力に変
換して負担するように構成した点に特徴がある。E) The cross-sectional shape of the first reduced portion may be deformed into an arc shape or a conical shape, or a similar shape in some cases. In the present invention, the pipe member is formed by the first reduced portion. It is characterized in that the axial force generated in the above is converted into a radial force to bear it.
【0012】[0012]
【発明の実施の形態】次に図面を参照して本発明の実施
の形態を説明する。図1は本発明に係る複合材製パイプ
の端部の断面図であって、炭素繊維やガラス繊維あるい
はアラミド繊維等の高強度の繊維とプラスチックとから
なる複合材製パイプPのパイプ部1の端部の内径部に金
属製の短管2が埋込まれ、この短管2を包んで繊維層か
らなる厚肉部3による接合部4が形成されている。Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is a cross-sectional view of an end portion of a composite pipe according to the present invention, showing a pipe section 1 of a composite pipe P made of high-strength fibers such as carbon fiber, glass fiber, or aramid fiber and plastic. A short pipe 2 made of metal is embedded in the inner diameter of the end, and a joining portion 4 formed by a thick portion 3 made of a fiber layer is formed surrounding the short pipe 2.
【0013】前記短管2は中間部に大径部2aを持ち、
この大径部2aの一方のパイプ部1の端部側に断面が小
さな円弧状の第1の縮小部2bを、パイプ部1の主体と
なる側に外形が円錐状の第2の縮小部2cをそれぞれ形
成し、この短管2の内径とパイプ部1内径とを合致させ
ている。The short tube 2 has a large diameter portion 2a at an intermediate portion,
An arc-shaped first reduced portion 2b having a small cross section is provided on one end portion of one of the pipe portions 1 of the large-diameter portion 2a, and a conical second reduced portion 2c is provided on a main portion of the pipe portion 1. Are formed, and the inner diameter of the short pipe 2 matches the inner diameter of the pipe portion 1.
【0014】前記短管2の各部の作用を説明すると、パ
イプ部1の端部側に形成した第1の縮小部2bは、繊維
層で形成した厚肉部3を介してパイプ部1に発生する軸
力を半径方向に力に変換してこの第1の縮小部2bを圧
縮するように作用させ、そしてこの軸力を分散させて負
担する部分であり、重要な役目をしている。The operation of each section of the short pipe 2 will be described. The first reduced section 2b formed at the end of the pipe section 1 is generated in the pipe section 1 via the thick section 3 formed of a fiber layer. This axial force is converted into a force in the radial direction to act to compress the first reduced portion 2b, and is a portion that distributes and bears the axial force, and plays an important role.
【0015】従って、軸力が作用するとこの第1の縮小
部2bに恰も編組ないしは配列した繊維層が引っかか
り、そして拡げられるような状態となり、短管2と複合
材からなるパイプ部1との接着強度がさほど大きくなく
ても、大きな軸力に耐えることができるのである。Therefore, when an axial force acts, the braided or arranged fiber layers are caught and spread on the first reduced portion 2b, and the fiber layer is bonded to the first reduced portion 2b. Even if the strength is not so large, it can withstand a large axial force.
【0016】そしてこの実施の形態においては、大径部
2aから前記パイプ部1の内径部まで縮小する第2の縮
小部2cはなだらかな円錐形の表面を有しており、この
第2の縮小部2cで変換した半径方向の力をこの部分で
パイプ部1側に向かう軸力に変換しており、この意味に
おいてこの第2の縮小部2cは大径部2aからパイプ部
1に円滑に軸力が発生するような外形を採用するのが良
い。In this embodiment, the second reduced portion 2c for reducing the diameter from the large diameter portion 2a to the inner diameter portion of the pipe portion 1 has a gentle conical surface. The radial force converted by the portion 2c is converted into an axial force directed toward the pipe portion 1 at this portion. In this sense, the second reduced portion 2c smoothly moves from the large diameter portion 2a to the pipe portion 1. It is good to adopt an external shape that generates force.
【0017】この第2の縮小部2cは図1に示すように
円錐形の他、断面が外面に僅かに膨出する円弧状のもの
であっても良い。更に前記厚肉部3は、短管2の外周部
を囲んで形成した繊維層からなる部分であって、パイプ
部1の端部において、第1の縮小部2bの部分の作用で
半径方向に変換された軸力を、その肉厚を調節して負担
するようにしており、従って、この肉厚の調節によって
接合部4を短く形成することができる。なお、図1にお
いてはこの厚肉部3の外形を円柱状の部分と円錐状の部
分とで形成しているが、この部分は円柱状の部分からパ
イプ部1にわたってなだらかに曲面が形成されるように
しても良い。As shown in FIG. 1, the second reduced portion 2c may be a conical shape or an arc-shaped cross section slightly bulging to the outer surface. Further, the thick portion 3 is a portion composed of a fiber layer formed so as to surround the outer peripheral portion of the short pipe 2, and at the end of the pipe portion 1, in the radial direction due to the action of the portion of the first reduced portion 2 b. The converted axial force is borne by adjusting the thickness thereof, so that the joint 4 can be formed short by adjusting the thickness. In FIG. 1, the outer shape of the thick portion 3 is formed by a columnar portion and a conical portion, but this portion has a gentle curved surface extending from the columnar portion to the pipe portion 1. You may do it.
【0018】前記短管2の第1の縮小部2b側の内径部
にはネジ部5が形成されており、フランジ部6aと短管
部6bからなるフランジ体6の、前記短管部6bの外周
面に形成したネジ部6cを前記ネジ部5内に螺合して接
合部4の端部にフランジ体6を固定している。そしてこ
のフランジ体6を接続する図示しないパイプのフランジ
体と対面させて両者の間をボルト締めによって連結する
ようになっている。A thread 5 is formed on the inner diameter of the short tube 2 on the first reduced portion 2b side, and a flange 6 composed of a flange 6a and a short tube 6b is formed on the short tube 6b. A screw portion 6c formed on the outer peripheral surface is screwed into the screw portion 5 to fix the flange body 6 to the end of the joint portion 4. The flange body 6 faces the flange body of a pipe (not shown) to be connected, and the two are connected by bolting.
【0019】次に、前記複合材製パイプPの製造工程を
図2乃至図5を参照して説明する。図2に示すように、
マンドレル10の両端に金属製の短管2A,2Bを嵌合
する。そして図3に示すようにマンドレル10を図示し
ないフイラメントワインデイング装置のスピンドルに取
付けて回転させながら、前記短管2Aと2Bとこれらの
間のマンドレル10の周面上にフイラメントワインデイ
ング法によってガラス繊維や炭素繊維等の補強繊維11
を、トラバース装置11aを介して矢印のようにトラバ
ース運動させながら巻回して所定の厚みの繊維層11a
を形成する。Next, the manufacturing process of the composite pipe P will be described with reference to FIGS. As shown in FIG.
The short pipes 2A and 2B made of metal are fitted to both ends of the mandrel 10. As shown in FIG. 3, while attaching and rotating the mandrel 10 to a spindle of a filament winding device (not shown), the short fibers 2A and 2B and the glass fiber are formed on the peripheral surface of the mandrel 10 therebetween by the filament winding method. Fiber 11 such as carbon fiber
Is wound while being traversed as indicated by an arrow through a traverse device 11a to form a fiber layer 11a having a predetermined thickness.
To form
【0020】次に、図3のフイラメントワインデイング
工程を経て繊維層11aを囲んでいたプラスチックの未
反応物を、常法にしたがって加熱等によって重合させて
図4に示すように複合材製パイプPの原型を製造する。Next, the unreacted plastic material surrounding the fiber layer 11a through the filament winding step shown in FIG. 3 is polymerized by heating or the like according to a conventional method, and as shown in FIG. To produce a prototype.
【0021】次いでこのパイプPの原型の中央部に配置
されているマンドレル10を抜き取って所定の長さの複
合材製パイプPを製造する。なお、前記図2の準備段階
が終了すると、マンドレル10と短管2A、2Bの外表
面にプラスチックが付着しないように離型剤の層ないし
はこれと同様な作用をするシート材等の層を形成してお
く。Next, the mandrel 10 arranged at the center of the original model of the pipe P is extracted to produce a composite pipe P of a predetermined length. When the preparatory step shown in FIG. 2 is completed, a layer of a release agent or a layer of a sheet material or the like having the same effect as above is formed so that plastic does not adhere to the outer surfaces of the mandrel 10 and the short tubes 2A and 2B. Keep it.
【0022】図4においてマンドレル10を複合材製パ
イプPより抜いて図5の状態とすると、このパイプPの
両端部には、図1に示したように短管2A、2Bが内蔵
されており、この短管2A、2Bのネジ部5にフランジ
体6の短管部6bのネジ部6cを螺合して固定してパイ
プPの両端にフランジ部6aを固定する。In FIG. 4, when the mandrel 10 is pulled out from the composite pipe P to obtain the state shown in FIG. 5, short pipes 2A and 2B are built in both ends of the pipe P as shown in FIG. Then, the screw portion 6c of the short tube portion 6b of the flange body 6 is screwed and fixed to the screw portion 5 of the short tube 2A, 2B, and the flange portion 6a is fixed to both ends of the pipe P.
【0023】図6は本発明の別の実施の形態を示す複合
材製パイプPの接合部4の断面を示すものであって、短
管20の中央部に大径部20aが形成され、これの両側
に断面が円弧状の第1の縮小部20bと第2の縮小部2
0cがなだらかに形成され、更にこれらの第1と第2の
縮小部20b、20cの端部より管状部20dと20e
がそれぞれ延長されている。FIG. 6 shows a cross section of a joint 4 of a composite pipe P showing another embodiment of the present invention. A large diameter portion 20a is formed at the center of a short pipe 20. The first reduced portion 20b and the second reduced portion 2 having an arc-shaped cross section on both sides of the
0c is formed gently, and the ends of the first and second reduced portions 20b and 20c are further formed into tubular portions 20d and 20e.
Have been extended.
【0024】そして図7に示すフイラメントワインデイ
ング工程により前記短管20の表面を包むようにパイプ
部1Aの膨張された端部1Bが形成され、この部分が図
1に示す接合部4に対応している。そしてパイプPより
マンドレル10を抜き取ったのち前記管状部20d側に
フランジ体6Aを嵌合し、溶接部6dによって固定して
いる。The expanded end portion 1B of the pipe portion 1A is formed by the filament winding process shown in FIG. 7 so as to cover the surface of the short tube 20, and this portion corresponds to the joint portion 4 shown in FIG. I have. After extracting the mandrel 10 from the pipe P, the flange body 6A is fitted to the tubular portion 20d side and fixed by the welded portion 6d.
【0025】なお、図6に示した実施の形態においては
第1の縮小部20bと第2の縮小部20cが断面円弧状
に形成されているが、この部分は前記のように円錐形や
断面円弧状と円錐形との複合した形状であっても良い。
本発明の複合材製パイプによれば、パイプPの端部に金
属製の短管2、20が内蔵されており、この短管2、2
0を利用してフランジ体6、6Aを簡単に固定すること
ができる。In the embodiment shown in FIG. 6, the first reduced portion 20b and the second reduced portion 20c are formed in an arc-shaped cross section. It may be a composite shape of an arc and a cone.
According to the composite pipe of the present invention, the short pipes 2 and 20 made of metal are built in the end of the pipe P.
The flange members 6 and 6A can be easily fixed by utilizing 0.
【0026】しかも、この短管2、20は、中央部に大
径部2a、20aを、パイプPの端部側に第1の縮小部
2b、20bを、パイプ部1、1A側に第2の縮小部2
c、20cをそれぞれ形成しているので、これらの第1
の縮小部2b、20bによって補強材としての繊維層を
介してパイプPに作用する軸力を、半径方向の力に変換
して分散負担することができるために、かなり大きな軸
力に耐えることができる。Moreover, the short pipes 2 and 20 have large-diameter portions 2a and 20a at the center, first reduced portions 2b and 20b at the end of the pipe P, and second reduced portions 2b and 20b at the pipes 1 and 1A. Reduction part 2 of
c and 20c, respectively, so that these first
Since the axial force acting on the pipe P via the fiber layer as a reinforcing material can be converted into a radial force by the reduced portions 2b and 20b, and the load can be dispersed and loaded, it is possible to withstand a considerably large axial force. it can.
【0027】従って、本発明に係る複合材製パイプによ
れば、石油掘削用の長尺なライザー管等に有効に利用す
ることができる。Therefore, the composite pipe according to the present invention can be effectively used for a long riser pipe for oil drilling.
【0028】[0028]
【発明の効果】本発明は、繊維層で補強した複合材製パ
イプの端部に金属製の短管を内蔵させ、この短管は少な
くとも前記パイプの端部側に縮小部を形成しており、そ
してこの短管を覆うように繊維層を形成している。従っ
て前記縮小部によってパイプに発生する軸力を、半径方
向の力に変換して分散支持するように形成し、更に前記
短管の内面に形成したネジ部、もしくは前記縮小部より
延長した管状部に別体のフランジ体を固定するようにし
ている。According to the present invention, a short pipe made of metal is incorporated at the end of a composite pipe reinforced with a fiber layer, and this short pipe has a reduced portion formed at least at the end of the pipe. A fiber layer is formed so as to cover the short tube. Therefore, the axial force generated in the pipe by the reduced portion is formed so as to be dispersed and supported by converting it into a radial force, and further, a threaded portion formed on the inner surface of the short pipe, or a tubular portion extended from the reduced portion A separate flange body is fixed to the body.
【0029】従って本発明によれば、複合材製パイプの
端部に内蔵配置した短管を利用して簡単にフランジ体を
取付けることができる。この短管は、パイプの端部側に
形成した縮小部によってこのパイプの軸力を半径方向の
力に変換して分散して負担するので、複合材製パイプで
ありながら、大きな軸力に耐えることができる。Therefore, according to the present invention, it is possible to easily attach the flange body by using the short pipe built in the end of the composite pipe. The short pipe converts the axial force of the pipe into a radial force by a reduced portion formed on the end side of the pipe and disperses and bears the load. Therefore, the short pipe withstands a large axial force despite being a composite pipe. be able to.
【図1】複合材製パイプの端部の接合部の断面図であ
る。FIG. 1 is a cross-sectional view of a joint at an end of a composite pipe.
【図2】複合材製パイプの製造工程を示す斜視図であ
る。FIG. 2 is a perspective view showing a manufacturing process of the composite pipe.
【図3】複合材製パイプの製造工程を示す斜視図であ
る。FIG. 3 is a perspective view showing a manufacturing process of a composite pipe.
【図4】複合材製パイプの製造工程を示す斜視図であ
る。FIG. 4 is a perspective view showing a manufacturing process of the composite pipe.
【図5】製造した複合材製パイプの両端にフランジ体を
螺合する状態を示す斜視図である。FIG. 5 is a perspective view showing a state where a flange body is screwed to both ends of a manufactured composite pipe.
【図6】前記の実施の形態に係わる複合材製パイプの端
部の断面図である。FIG. 6 is a sectional view of an end portion of the composite pipe according to the embodiment.
【図7】図6に示す複合材製パイプの製造工程の説明図
である。FIG. 7 is an explanatory diagram of a manufacturing process of the composite pipe shown in FIG. 6;
P 複合材製パイプ 1、1A パイプ部 2、2A、2B 短管 2a 大径部 2b 第1の縮小部 2c 第2の
縮小部 3 厚肉部 4 接合部 5 ネジ部 6、6A フランジ体
6a フランジ部 6b 短管部 6c ネジ部 6d 溶接部P Composite material pipe 1, 1A Pipe part 2, 2A, 2B Short pipe 2a Large diameter part 2b First reduced part 2c Second reduced part 3 Thick part 4 Joining part 5 Screw part 6, 6A Flange
6a Flange 6b Short pipe 6c Screw 6d Weld
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 FI F16L 9/16 ──────────────────────────────────────────────────続 き Continued on front page (51) Int.Cl. 6 Identification code FI F16L 9/16
Claims (5)
配置し、該短管の表面を覆って繊維層を形成した複合材
製パイプ体であって、前記短管は中央部に大径部を、そ
の両側に第1の縮小部と第2の縮小部を形成しており、
該第1の縮小部は大径部から該短管の端部に向かって縮
小した表面に形成し、該第1の縮小部によって前記パイ
プ体に発生する軸力を半径方向の力に変換して負担する
ように構成しており、更に前記短管にフランジ体を固定
してなる複合材製パイプ。1. A composite pipe body in which a short metal tube is disposed at at least one end and a fiber layer is formed so as to cover the surface of the short tube. Forming a first reduced portion and a second reduced portion on both sides of the diameter portion;
The first reduced portion is formed on a surface reduced from the large diameter portion toward the end of the short tube, and converts the axial force generated in the pipe body into a radial force by the first reduced portion. A composite pipe comprising a flange body fixed to the short pipe.
ジ部が形成され、該ネジ部にフランジ体の短管部に形成
したネジ部を螺合して固定してなる請求項1記載の複合
材製パイプ。2. A metal short tube having a screw portion formed on an inner surface of a first reduced portion, and a screw portion formed on a short tube portion of a flange body is screwed and fixed to the screw portion. Item 7. A composite pipe according to Item 1.
の端部に向かって断面が円弧状に縮小した表面に形成さ
れている請求項1記載の複合材製パイプ。3. The composite pipe according to claim 1, wherein the first reduced portion of the metal short tube is formed on a surface whose cross section is reduced in an arc shape toward an end of the short tube.
の端部に向かって円錐状に縮小した表面に形成されてい
る請求項1記載の複合材製パイプ。4. The composite pipe according to claim 1, wherein the first reduced portion of the metal short tube is formed on a surface conically reduced toward the end of the short tube.
配置し、該短管の表面を覆って繊維層を形成した複合材
製パイプ体であって、前記短管は中央部に大径部を、そ
の両側に第1の縮小部と第2の縮小部を形成しており、
該第1の縮小部は大径部から該短管の端部に向かって縮
小した表面を形成し、前記第1の縮小部によって前記パ
イプ体に発生する軸力を半径方向の力に変換して負担す
るように構成しており、更に少なくとも前記第1の縮小
部に管状部が前記繊維層より外部に突出して延長されて
おり、この延長された部分にフランジ体を固定してなる
複合材製パイプ。5. A composite pipe body in which a metal short pipe is arranged at at least one end and a fiber layer is formed so as to cover the surface of the short pipe. Forming a first reduced portion and a second reduced portion on both sides of the diameter portion;
The first reduced portion forms a surface reduced from the large diameter portion toward the end of the short pipe, and converts an axial force generated in the pipe body by the first reduced portion into a radial force. A composite material comprising a tubular portion extending at least in the first reduced portion so as to protrude outside the fiber layer, and a flange body fixed to the extended portion. Pipes.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15957597A JP3876277B2 (en) | 1997-06-17 | 1997-06-17 | Composite pipe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15957597A JP3876277B2 (en) | 1997-06-17 | 1997-06-17 | Composite pipe |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH116588A true JPH116588A (en) | 1999-01-12 |
JP3876277B2 JP3876277B2 (en) | 2007-01-31 |
Family
ID=15696717
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15957597A Expired - Lifetime JP3876277B2 (en) | 1997-06-17 | 1997-06-17 | Composite pipe |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3876277B2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005265056A (en) * | 2004-03-18 | 2005-09-29 | Toyo Tire & Rubber Co Ltd | Rubber shaped body and method for manufacturing the same |
CN103115200A (en) * | 2013-02-22 | 2013-05-22 | 中联重科股份有限公司 | Concrete conveying pipe and manufacturing method thereof |
CN103994176A (en) * | 2014-05-27 | 2014-08-20 | 上海思博特轴承技术研发有限公司 | Technology for adjusting static and dynamic equilibrium of inner flange of automobile hub bearing and flange assembly of automobile hub bearing |
CN108044569A (en) * | 2017-12-06 | 2018-05-18 | 普瑞特机械制造股份有限公司 | A kind of compound shovel of sealed sunitary |
-
1997
- 1997-06-17 JP JP15957597A patent/JP3876277B2/en not_active Expired - Lifetime
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005265056A (en) * | 2004-03-18 | 2005-09-29 | Toyo Tire & Rubber Co Ltd | Rubber shaped body and method for manufacturing the same |
JP4615882B2 (en) * | 2004-03-18 | 2011-01-19 | 東洋ゴム工業株式会社 | Rubber molded body and apparatus for producing the same |
CN103115200A (en) * | 2013-02-22 | 2013-05-22 | 中联重科股份有限公司 | Concrete conveying pipe and manufacturing method thereof |
CN103115200B (en) * | 2013-02-22 | 2015-10-28 | 中联重科股份有限公司 | Concrete conveying pipe and manufacturing method thereof |
CN103994176A (en) * | 2014-05-27 | 2014-08-20 | 上海思博特轴承技术研发有限公司 | Technology for adjusting static and dynamic equilibrium of inner flange of automobile hub bearing and flange assembly of automobile hub bearing |
CN108044569A (en) * | 2017-12-06 | 2018-05-18 | 普瑞特机械制造股份有限公司 | A kind of compound shovel of sealed sunitary |
Also Published As
Publication number | Publication date |
---|---|
JP3876277B2 (en) | 2007-01-31 |
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