JP2004353829A - Tube with spiral guideway and its manufacturing method - Google Patents

Tube with spiral guideway and its manufacturing method Download PDF

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Publication number
JP2004353829A
JP2004353829A JP2003155238A JP2003155238A JP2004353829A JP 2004353829 A JP2004353829 A JP 2004353829A JP 2003155238 A JP2003155238 A JP 2003155238A JP 2003155238 A JP2003155238 A JP 2003155238A JP 2004353829 A JP2004353829 A JP 2004353829A
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Japan
Prior art keywords
guide path
main body
spiral guide
pipe
tube
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JP2003155238A
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Japanese (ja)
Inventor
Goro Minami
吾郎 南
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Sekisui Chemical Co Ltd
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Sekisui Chemical Co Ltd
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Priority to JP2003155238A priority Critical patent/JP2004353829A/en
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  • Rigid Pipes And Flexible Pipes (AREA)
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a tube with spiral guideway with which a spiral guideway is firmly fixed to a tube body in the state that a manufacturing cost is low, a construction period is short and durability is excellent, and to provide a method for manufacturing the same. <P>SOLUTION: The tube 1 with the spiral guideway includes the spiral guideway 12 mounted on the inner peripheral surface of a straight tube-like tube body 11 so that an axial core is formed in a hollow. As the spiral guideway 12, a fiber-reinforced resin layer 122 is used which is provided on at least water flow side face of a core material 121 in which fixed parts 121a, 121c are provided to the above-mentioned tube body 11. The fixed parts 121a, 121c are fixed to the tube body 11 by clampers 13, 13' at each predetermined interval. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、自然流下式の垂直下水管路等に使用され、直管状の管本体部の内部に、軸芯部が空洞をなすように螺旋案内路が設けられた螺旋案内路付き管及びその製造方法に関するものである。
【０００２】
【従来の技術】
地表勾配が急な場所では、通常、適当な間隔をあけてマンホールを設置して、各マンホール間の管路に段差が形成された段差式の下水路が形成されている。しかし、このような段差式の下水路は、施工が容易ではなく、工期も長期にわたるために工事費がかさむという問題がある。
【０００３】
このため、このような段差式の下水路に替わって、下水管路を垂直に配置した垂直下水管路（ドロップシャフト）使用する方法が開発されている。
また、最近では、このような垂直下水管路として、例えば、縦管本体内に螺旋案内路を設けたものが提案されている（特許文献１参照）。
【０００４】
また、螺旋案内路付き管の製造方法としては、例えば、図６に示すように、製造のし易さから、流体流入側に延出する壁面部が外周縁全周にわたって設けられている断面Ｌ字状のＦＲＰ製の螺旋案内路ａの外周縁部を、ハンドレアップにてＳＭＣｂを積層することにより縦管本体ｃの内面に固定する方法が提案されている。
しかしながら、この方法では、螺旋案内路ａを形成するＦＲＰの原料である樹脂やガラス繊維が高価であり、しかも、ハンドレアップにてＳＭＣｂを積層するようにして螺旋案内路ａを管本体部ｃに固定する必要があるので、製品コストが非常に高く、工期が長くなるという問題点がある。
【０００５】
【特許文献１】
特開平８−４１９１５号公報
【０００６】
【発明が解決しようとする課題】
本願は上記の如き従来の問題点を解消し、製造コストが安く、工期が短くして、耐久性に優れた状態にて螺旋案内路が管本体部内に強固に固定された螺旋案内路付き管及びその製造方法を提供することを目的としてなされたものである。
【０００７】
【課題を解決するための手段】
本願の請求項１に係る発明は、直管状の管本体部の内周面に、軸芯部が空洞をなすように螺旋案内路が取り付けられた螺旋案内路付き管であって、前記螺旋案内路として、前記管本体部との固定部が設けられた芯材部の少なくとも流水側面に、繊維強化樹脂層が設けられたものが使用され、その固定部が所定間隔毎に締結具にて前記管本体部に固定されている螺旋案内路付き管である。
【０００８】
本願の請求項２に係る発明は、直管状の管本体部の内周面に、軸芯部が空洞をなすように螺旋案内路が取り付けられた螺旋案内路付き管の製造方法であって、前記螺旋案内路として、前記管本体部との固定部が設けられた芯材部の少なくとも流水側面に、繊維強化樹脂層が設けられたものを使用し、その固定部を所定間隔毎に締結具にて前記管本体部に固定する螺旋案内路付き管の製造方法である。
【０００９】
【作用】
本発明の螺旋案内路付き管は、前記螺旋案内路として、前記管本体部との固定部が設けられた芯材部の少なくとも流水側面に、繊維強化樹脂層が設けられたものが使用され、その固定部が所定間隔毎に締結具にて前記管本体部に固定されていることにより、螺旋案内路全体を繊維強化樹脂とする必要でないので安価であり、螺旋案内路を固定部を利用して管本体部内に簡単に取り付けることができ、螺旋案内路が芯材部にて補強され且つその流水側面に繊維強化樹脂層が設けられているので耐久性に優れている。
【００１０】
本発明の螺旋案内路付き管の製造方法は、前記螺旋案内路として、前記管本体部との固定部が設けられた芯材部の少なくとも流水側面に、繊維強化樹脂層が設けられたものを使用し、その固定部を所定間隔毎に締結具にて前記管本体部に固定することにより、螺旋案内路を管本体部内に簡単に取り付けることができ、安価で耐久性に優れた螺旋案内路付き管を工期短く製造することができる。
【００１１】
【発明の実施の形態】
以下、本発明の実施の形態を図面を参照して説明する。
図１は、本発明の螺旋案内路付き管及びその製造方法の実施の形態の一例を説明する断面図であり、図２はその要部断面図である。
図１に示すように、この螺旋案内路付き管１は、直管状の管本体部１１と螺旋案内路１２とからなる。
【００１２】
管本体部１１は、同一の内径を有し一定の肉厚の直管状をしている。
管本体部１１の材質としては、特に限定されるものではないが、例えば、硬質塩化ビニル樹脂、ポリエチレン、ポリプロピレン、ポリカーボネート等の熱可塑性樹脂、ステレンレス等の金属類、ＦＲＰ、ＦＲＰとモルタルとの積層体であるいわゆるＦＲＰＭや、セメント、鉄筋で補強されたコンクリート等が挙げられる。
【００１３】
図２に示すように、螺旋案内路１２は、芯材部１２１と繊維強化樹脂層１２２とからなる。
芯材部１２１は、螺旋滑り台状に形成された芯材本体部１２１ａの外周縁の上方及び下方に、それぞれ、周方向に湾曲する上固定部１２１ｂと下固定部１２１ｃが全周にわたって一体的に設けられたものからなる。上固定部１２１ｂ及び下固定部１２１ｃには、周方向の所定間隔毎に、締結具挿通孔が設けられていて、管本体部１１の対応する部分に設けられた締結具挿通孔との間に締結具１３，１３′を挿通して締結することにより、芯材部１２１を管本体部１１の内周面に固定されている。
芯材部１２１の材質としては、特に限定されるものではないが、例えば、鉄類、硬質発泡ウレタン樹脂、レジンコンクリート等が挙げられる。
【００１４】
繊維強化樹脂層１２２は、螺旋案内路１２の芯材部１２１を締結具１３，１３′にて管本体部１１の内周面に固定した後に、ＳＭＣを用いてハンドレアップ法にて積層後硬化させることにより成形した層であって、螺旋案内路１２の芯材部１２１の芯材本体部１２１ａの流水側面（上面）を含む全周囲と、上固定部１２１ｂの管本体部１１内に表出する部分並びの締結具１３の頭部と、下固定部１２１ｃの管本体部１１内に表出する部分並びに締結部１３′とを一体的に覆った状態となされている。
これにより、直管状の管本体部１１の内周面に、軸芯部が空洞をなすように螺旋案内路１２が取り付けられた螺旋案内路付き管１となされている。
【００１５】
次に、上記の螺旋案内路付き管１の製造方法を、同じ図１及び図２を参照して説明する。
まず、螺旋案内路１２を構成する芯材部１２１だけを管本体部１１内に挿入し、上固定部１２１ｂ及び下固定部１２１ｃの周方向の所定間隔毎に設けられた締結具挿通孔と、管本体部１１の対応する部分に設けられた締結具挿通孔との間に、順次、締結具１３，１３′を挿通し締結する作業を行う。これにより、管本体部１１の内周面に芯材部１２１を固定する。
【００１６】
次に、ＳＭＣを用いてハンドレアップ法にて、芯材部１２１の芯材本体部１２１ａの流水側面（上面）を含む全周囲と、上固定部１２１ｂの管本体部１１内に表出する部分並びの締結具１３の頭部と、下固定部１２１ｃの管本体部１１内に表出する部分並びに締結部１３′とを一体に覆った状態に積層した後硬化させることにより繊維強化樹脂層１２２を形成して、芯材部１２１の少なくとも流水側面に繊維強化樹脂層１２２が設けられた螺旋案内路１２の部分を完成させる。
これにより、直管状の管本体部１１の内周面に、軸芯部が空洞をなすように上記の螺旋案内路１２が取り付けられた螺旋案内路付き管１が製造される。
【００１７】
図３は、本発明の螺旋案内路付き管及びその製造方法の実施の形態の別の例を説明する要部断面図である。
図３に示すように、この螺旋案内路付き管２は、直管状の管本体部２１と螺旋案内路２２とからなる。
【００１８】
管本体部２１は、同一の内径を有し一定の肉厚の直管状をしている。管本体部２１の材質は、前記の管本体部１１と同じものが採用できる。
螺旋案内路２２は、螺旋滑り台状に形成された芯材部２２１と、その流水側面（上面）に積層された繊維強化樹脂層２２２と、芯材部２２１の外周縁側に周方向に沿って設けられた固定部２２３とからなる。芯材部２２１及び固定部２２３の材質は、前記の芯材部１２１と同じものが採用できる。
【００１９】
固定部２２３は、水平部２２３ａの外周縁の下方に周方向に湾曲する支持部２２３ｂが曲折するように設けられた断面Ｌ字状のものからなる。
支持部２２３は芯材部２２１の外周縁から下方に突出されている。支持部２２３には周方向の所定間隔毎に締結具挿通孔が設けられていて、管本体部２１の対応する部分に設けられた締結具挿通孔との間に締結具２３を挿通して締結することにより固定されている。
【００２０】
繊維強化樹脂層２２２は、芯材部２２１の流水面側（上面）に、ＳＭＣを用いてハンドレアップ法にて積層後硬化させることにより成形された層である。
繊維強化樹脂層２２２は、予め芯材部２２１の上面に積層した状態となし、固定部２２３付きの螺旋案内路２２を完成させておいて、その螺旋案内路２２が管本体部２１の内周面に固定されている。
これにより、直管状の管本体部２１の内周面に、軸芯部が空洞をなすように上記の螺旋案内路２２が取り付けられた螺旋案内路付き管２となされている。
【００２１】
なお、図４に示すように、固定部２２３の水平部が芯材部２２１の外周縁側に、その境界部が周方向に沿って相互に入り込むように埋設されていると、相互間の接合強度が大きくなるので好ましい。このようなものの成形方法としては、ウレタンＲＩＭ法、ＳＭＣ法、ＲＩＭ法等が挙げられる。
【００２２】
また、固定部２２３付きの芯材部２２１が管本体部２１内に固定された後に、ＳＭＣを用いてハンドレアップ法にて、芯材部２２１の流水側面（上面）に繊維強化樹脂層層を積層した後硬化されたものであっても構わない。
【００２３】
次に、上記の螺旋案内路付き管２の製造方法を、同じ図３を参照して説明する。
まず、固定部２２３付きの芯材部２２１の流水側面（上面）に繊維強化樹脂層２２２を積層した後硬化した状態となし、固定部２２３が設けられた状態の螺旋案内路２２を完成させる。
次に、その螺旋案内路２２を管本体部２１内に挿入し、固定部２２３の支持部２２３ｂの周方向の所定間隔毎に設けられた締結具挿通孔と、管本体部２１の対応する部分に設けられた締結具挿通孔との間に、順次、締結具２４を挿通し締結する作業を行うことにより、管本体部２１の内周面に螺旋案内路２２を固定する。
これにより、直管状の管本体部２１の内周面に、軸芯部が空洞をなすように上記の螺旋案内路２２が取り付けられた螺旋案内路付き管２が製造される。
【００２４】
図５は、本発明の螺旋案内路付き管及びその製造方法の実施の形態の更に別の例を説明する要部断面図である。
図５に示すように、この螺旋案内路付き管３は、直管状の管本体部３１と螺旋案内路３２とからなる。
管本体部３１は、同一の内径を有し一定の肉厚の直管状をしている。管本体部３１の材質は、前記の管本体部１１と同じものが採用できる。
【００２５】
螺旋案内路３２は、螺旋滑り台状に形成された芯材部３２１と、その流水側面（上面）を全周に積層された繊維強化樹脂層３２２と、芯材部３２１の外周縁から下方に曲折されるようにして設けられた固定部３２３とからなる。
固定部２２３は周方向に湾曲されており、繊維強化樹脂層３２２から下方に突出するように設けられている。固定部２２３には周方向の所定間隔毎に締結具挿通孔が設けられていて、管本体部３１の対応する部分に設けられた締結具挿通孔との間に締結具３３を挿通して締結することにより固定されている。
これにより、直管状の管本体部３１の内周面に、軸芯部が空洞をなすように螺旋案内路３２が取り付けられた螺旋案内路付き管３となされている。
【００２６】
次に、上記の螺旋案内路付き管３の製造方法を、同じ図４を参照して説明する。
まず、繊維強化樹脂層３２２が予め芯材部３２１の流水側面（上面）を含む全面に積層した状態となされ、固定部３２３が下方に突出した状態の螺旋案内路３２を完成させる。
次に、その螺旋案内路３２を管本体部３１内に挿入し、固定部３２３の周方向の所定間隔毎に設けられた締結具挿通孔と、管本体部３１の対応する部分に設けられた締結具挿通孔との間に、順次、締結具３３を挿通し締結する作業を行うことにより、管本体部３１の内周面に螺旋案内路３２を固定する。
これにより、直管状の管本体部３１の内周面に、軸芯部が空洞をなすように螺旋案内路３２が取り付けられた螺旋案内路付き管３が製造される。
【００２７】
【発明の効果】
本発明の螺旋案内路付き管は、上記のごとき構成とされているので、安価であり、螺旋案内路を管本体部内に簡単に取り付けることができ、耐久性に優れている。
【００２８】
本発明の螺旋案内路付き管の製造方法は、上記のごとき構成とされているので、螺旋案内路を管本体部内に簡単に取り付けることができ、安価で耐久性に優れた螺旋案内路付き管を工期短く製造することができる。
【図面の簡単な説明】
【図１】本発明の螺旋案内路付き管及びその製造方法の実施の形態の一例を説明する断面図である。
【図２】図１の要部断面図である。
【図３】本発明の螺旋案内路付き管の別の例を説明する要部断面図である。
【図４】図３に示す螺旋案内路付き管の要部を説明する模式図ある。
【図５】本発明の螺旋案内路付き管の更に別の例を説明する平面図の一部である。
【図６】従来例を説明する要部断面図である。
【符号の説明】
１，２，３ 螺旋案内路付き管
１１，２１，３１ 管本体部
１２，２２，３２ 螺旋案内路
１２１，２２１，３２１ 芯材部
１２２，２２２，３２２ 繊維強化樹脂層
１３，２３，３３ 締結具[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a pipe with a spiral guide path, which is used for a free-flowing vertical sewer pipe or the like, and in which a spiral guide path is provided inside a straight tubular pipe main body so that a shaft core forms a cavity. It relates to a manufacturing method.
[0002]
[Prior art]
In a place where the surface gradient is steep, manholes are usually provided at appropriate intervals, and a stepped sewerage channel is formed in which a step is formed in a pipe between the manholes. However, such a stepped sewer has a problem that construction is not easy and the construction period is long, so that construction costs increase.
[0003]
For this reason, a method of using a vertical sewage pipe (drop shaft) in which sewage pipes are vertically arranged has been developed in place of such a step-type sewage pipe.
Recently, as such a vertical sewer pipe, for example, a pipe provided with a spiral guide path in a vertical pipe main body has been proposed (see Patent Document 1).
[0004]
As a method of manufacturing a pipe with a spiral guide path, for example, as shown in FIG. 6, for ease of manufacture, a cross section L in which a wall portion extending to the fluid inflow side is provided over the entire outer peripheral edge is provided. A method has been proposed in which the outer peripheral edge of the spiral guide path a made of a letter FRP is fixed to the inner surface of the vertical pipe main body c by stacking SMCb by hand-up.
However, in this method, the resin and glass fiber, which are the raw materials of the FRP forming the spiral guide path a, are expensive, and the spiral guide path a is attached to the pipe body c by stacking SMCb by hand-up. Since they need to be fixed, there is a problem that the product cost is very high and the construction period is long.
[0005]
[Patent Document 1]
JP-A-8-41915 [0006]
[Problems to be solved by the invention]
The present application solves the conventional problems as described above, the manufacturing cost is low, the construction period is short, and the spiral guide path is firmly fixed in the pipe main body in a state of excellent durability in a pipe with a spiral guide path. And a method for manufacturing the same.
[0007]
[Means for Solving the Problems]
The invention according to claim 1 of the present application is a pipe with a spiral guide path, wherein a spiral guide path is attached to an inner peripheral surface of a straight tubular pipe main body so that a shaft core portion forms a cavity. As the path, a pipe provided with a fiber-reinforced resin layer on at least the side surface of the flowing water of the core part provided with the fixing part with the pipe body part is used, and the fixing part is provided with a fastener at predetermined intervals. It is a pipe with a spiral guideway fixed to the pipe main body.
[0008]
The invention according to claim 2 of the present application is a method for manufacturing a pipe with a spiral guide path, in which a spiral guide path is attached to an inner peripheral surface of a straight tubular pipe main body so that a shaft core forms a cavity, As the spiral guide path, a pipe provided with a fiber reinforced resin layer on at least a side surface of a flowing water of a core member provided with a fixing portion with the pipe main body is used, and the fixing portion is fastened at predetermined intervals. And a method for manufacturing a pipe with a spiral guide path, which is fixed to the pipe body.
[0009]
[Action]
The pipe with a spiral guide path of the present invention, as the spiral guide path, a pipe provided with a fiber-reinforced resin layer on at least the side of the flowing water of a core member provided with a fixing portion with the pipe main body part is used, Since the fixing portion is fixed to the pipe main body by a fastener at predetermined intervals, the entire spiral guide path is not required to be made of fiber reinforced resin, so it is inexpensive. Since the spiral guide path is reinforced with the core material and the fiber reinforced resin layer is provided on the side surface of the flowing water, the durability is excellent.
[0010]
The method of manufacturing a pipe with a spiral guide path according to the present invention includes the spiral guide path in which a fiber-reinforced resin layer is provided on at least a flowing water side surface of a core member provided with a fixing portion with the pipe main body. By using and fixing the fixing portion to the pipe main body at predetermined intervals with fasteners, the spiral guide path can be easily installed in the pipe main body, and the spiral guide path is inexpensive and has excellent durability. The attached tube can be manufactured with a short construction period.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a sectional view illustrating an example of an embodiment of a tube with a spiral guideway and a method for manufacturing the same according to the present invention, and FIG. 2 is a sectional view of a main part thereof.
As shown in FIG. 1, the pipe 1 with a spiral guide path includes a straight tubular pipe main body 11 and a spiral guide path 12.
[0012]
The tube main body 11 is a straight tube having the same inner diameter and a constant thickness.
The material of the tube main body 11 is not particularly limited, but may be, for example, a thermoplastic resin such as hard vinyl chloride resin, polyethylene, polypropylene, or polycarbonate, a metal such as stainless steel, FRP, or a laminate of FRP and mortar. The body includes so-called FRPM, cement, concrete reinforced with reinforcing steel, and the like.
[0013]
As shown in FIG. 2, the spiral guide path 12 includes a core part 121 and a fiber reinforced resin layer 122.
The upper part 121b and the lower part 121c, which are curved in the circumferential direction, are integrally formed over the entire circumference above and below the outer peripheral edge of the core body part 121a formed in a spiral slide shape. It is composed of those provided. Fastener insertion holes are provided in the upper fixing portion 121b and the lower fixing portion 121c at predetermined intervals in the circumferential direction, and between the upper fixing portion 121b and the lower fixing portion 121c, the fastener inserting holes provided in corresponding portions of the tube main body 11 are provided. The core member 121 is fixed to the inner peripheral surface of the tube main body 11 by inserting and fastening the fasteners 13 and 13 ′.
The material of the core portion 121 is not particularly limited, and examples thereof include irons, hard urethane foam resin, and resin concrete.
[0014]
The fiber-reinforced resin layer 122 is hardened after the core part 121 of the spiral guide path 12 is fixed to the inner peripheral surface of the pipe main body part 11 with fasteners 13 and 13 ′, and then laminated by a hand-re-up method using SMC. This is a layer formed by being formed, and is exposed in the entire periphery including the flowing water side surface (upper surface) of the core material main portion 121a of the core material portion 121 of the spiral guide path 12 and in the pipe main body portion 11 of the upper fixing portion 121b. In this state, the heads of the fasteners 13 and the portions of the lower fixing portion 121c that are exposed in the tube body 11 and the fastening portions 13 'are integrally covered.
Thus, the pipe 1 with a spiral guide path is provided in which the spiral guide path 12 is attached to the inner peripheral surface of the straight tubular pipe main body 11 so that the shaft core forms a cavity.
[0015]
Next, a method for manufacturing the above-described tube 1 with a spiral guideway will be described with reference to FIGS.
First, only the core part 121 constituting the spiral guide path 12 is inserted into the pipe main body part 11, and fastener insertion holes provided at predetermined intervals in the circumferential direction of the upper fixing part 121b and the lower fixing part 121c, An operation of sequentially inserting and fastening the fasteners 13 and 13 ′ to the fastener insertion holes provided in the corresponding portions of the pipe main body 11 is performed. Thereby, the core part 121 is fixed to the inner peripheral surface of the tube main body 11.
[0016]
Next, a portion exposed in the pipe main body portion 11 of the upper fixing portion 121b and the entire periphery including the flowing water side surface (upper surface) of the core main body portion 121a of the core main portion 121a by a hand-layup method using the SMC. The fiber reinforced resin layer 122 is formed by laminating the heads of the side-by-side fasteners 13, the portion of the lower fixing portion 121 c that is exposed in the tube main body 11, and the fastening portion 13 ′, and then curing the laminated body. Is formed to complete the portion of the spiral guide path 12 in which the fiber reinforced resin layer 122 is provided at least on the side of the flowing water of the core part 121.
As a result, the pipe 1 with the spiral guide path, in which the above-mentioned spiral guide path 12 is attached to the inner peripheral surface of the straight tubular pipe main body 11 so that the axial core forms a cavity, is manufactured.
[0017]
FIG. 3 is a sectional view of an essential part for explaining another embodiment of a tube with a spiral guideway and a method for manufacturing the same according to the present invention.
As shown in FIG. 3, the pipe 2 with a spiral guide path includes a straight tubular pipe main body 21 and a spiral guide path 22.
[0018]
The tube main body 21 has the same inner diameter and is a straight tube having a constant thickness. The same material as that of the tube main body 11 can be adopted as the material of the tube main body 21.
The spiral guide path 22 is provided along the circumferential direction on the outer peripheral edge side of the core part 221, the fiber reinforced resin layer 222 laminated on the side (upper surface) of the flowing water, and the core part 221 formed in the shape of a spiral slide. And the fixed portion 223 provided. As the material of the core portion 221 and the fixing portion 223, the same material as that of the core portion 121 can be adopted.
[0019]
The fixing portion 223 has an L-shaped cross section in which a support portion 223b that is curved in the circumferential direction is provided below the outer peripheral edge of the horizontal portion 223a so as to be bent.
The support portion 223 protrudes downward from the outer peripheral edge of the core portion 221. Fastener insertion holes are provided in the support portion 223 at predetermined intervals in the circumferential direction, and the fasteners 23 are inserted between the fastener insertion holes provided in corresponding portions of the tube main body portion 21 for fastening. It is fixed by doing.
[0020]
The fiber-reinforced resin layer 222 is a layer formed by laminating and hardening after lamination on the flowing water side (upper surface) of the core member 221 by using a hand-up method using SMC.
The fiber reinforced resin layer 222 is previously laminated on the upper surface of the core part 221 to complete the spiral guide path 22 with the fixing part 223. It is fixed to the surface.
Thus, the pipe 2 with the spiral guide path is provided in which the above-described spiral guide path 22 is attached to the inner peripheral surface of the straight tubular pipe main body 21 so that the shaft core forms a cavity.
[0021]
As shown in FIG. 4, when the horizontal portion of the fixing portion 223 is buried on the outer peripheral edge side of the core portion 221 so that the boundary portion enters each other along the circumferential direction, the bonding strength between them is Is preferred. Examples of the molding method of such a material include a urethane RIM method, an SMC method, and a RIM method.
[0022]
Further, after the core part 221 with the fixing part 223 is fixed in the pipe main body part 21, the fiber reinforced resin layer layer is applied to the flowing side surface (upper surface) of the core part 221 by the hand-up method using the SMC. It may be cured after lamination.
[0023]
Next, a method of manufacturing the above-described tube 2 with a spiral guideway will be described with reference to FIG.
First, the fiber reinforced resin layer 222 is laminated on the flowing side surface (upper surface) of the core portion 221 with the fixing portion 223, and is then cured, thereby completing the spiral guide path 22 in which the fixing portion 223 is provided.
Next, the spiral guide path 22 is inserted into the pipe main body 21, and the fastener insertion holes provided at predetermined intervals in the circumferential direction of the support portion 223 b of the fixing portion 223 and the corresponding portions of the pipe main body 21. The screw guides 22 are fixed to the inner peripheral surface of the tube main body 21 by sequentially inserting and fastening the fasteners 24 between the fastener insertion holes provided in the tube body 21.
Thereby, the pipe 2 with the spiral guide path is manufactured in which the above-described spiral guide path 22 is attached to the inner peripheral surface of the straight tubular pipe main body 21 so that the axial core forms a cavity.
[0024]
FIG. 5 is a sectional view of an essential part for explaining still another example of the embodiment of the tube with a spiral guideway and the method for manufacturing the same according to the present invention.
As shown in FIG. 5, the pipe 3 with a spiral guide path includes a straight pipe main body 31 and a spiral guide path 32.
The pipe main body 31 is a straight tube having the same inner diameter and a constant thickness. The same material as that of the tube main body 11 can be adopted as the material of the tube main body 31.
[0025]
The spiral guide path 32 has a core part 321 formed in a spiral slide shape, a fiber reinforced resin layer 322 having the flowing side surface (upper surface) laminated all around, and a downward bend from the outer peripheral edge of the core part 321. And a fixing portion 323 provided in such a manner as to be carried out.
The fixing portion 223 is curved in the circumferential direction, and is provided so as to protrude downward from the fiber reinforced resin layer 322. Fastener insertion holes are provided in the fixed portion 223 at predetermined intervals in the circumferential direction, and fasteners 33 are inserted between the fastener insertion holes provided in corresponding portions of the tube main body 31 to fasten the fasteners. It is fixed by doing.
Thus, a tube 3 with a spiral guide path is provided in which the spiral guide path 32 is attached to the inner peripheral surface of the straight tubular tube main body 31 so that the shaft core forms a cavity.
[0026]
Next, a method of manufacturing the pipe 3 with the spiral guide path will be described with reference to FIG.
First, the fiber reinforced resin layer 322 is preliminarily laminated on the entire surface including the flowing water side surface (upper surface) of the core portion 321 to complete the spiral guide path 32 with the fixing portion 323 protruding downward.
Next, the spiral guide path 32 is inserted into the pipe main body 31, and is provided in a fastener insertion hole provided at a predetermined interval in the circumferential direction of the fixing portion 323 and a corresponding portion of the pipe main body 31. The helical guide path 32 is fixed to the inner peripheral surface of the tube main body 31 by successively inserting and fastening the fasteners 33 between the fastener insertion holes.
As a result, a pipe 3 with a spiral guide path, in which the spiral guide path 32 is attached to the inner peripheral surface of the straight tubular pipe main body 31 so that the shaft core forms a cavity, is manufactured.
[0027]
【The invention's effect】
Since the pipe with the spiral guide path of the present invention is configured as described above, it is inexpensive, and the spiral guide path can be easily mounted in the pipe main body, and is excellent in durability.
[0028]
Since the method for manufacturing a pipe with a spiral guideway according to the present invention is configured as described above, the spiral guideway can be easily mounted in the pipe main body, and the pipe with a spiral guideway that is inexpensive and has excellent durability. Can be manufactured with a short construction period.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view illustrating an example of an embodiment of a tube with a spiral guideway and a method for manufacturing the same according to the present invention.
FIG. 2 is a sectional view of a main part of FIG.
FIG. 3 is a cross-sectional view of a main part illustrating another example of a tube with a spiral guideway of the present invention.
FIG. 4 is a schematic diagram illustrating a main part of the pipe with a spiral guide path shown in FIG. 3;
FIG. 5 is a part of a plan view illustrating still another example of a tube with a spiral guideway of the present invention.
FIG. 6 is a sectional view of a main part for explaining a conventional example.
[Explanation of symbols]
1,2,3 Pipes with spiral guide paths 11,21,31 Pipe body sections 12,22,32 Spiral guide paths 121,221,321 Core material sections 122,222,322 Fiber reinforced resin layers 13,23,33 Fasteners

Claims (2)

直管状の管本体部の内周面に、軸芯部が空洞をなすように螺旋案内路が取り付けられた螺旋案内路付き管であって、前記螺旋案内路として、前記管本体部との固定部が設けられた芯材部の少なくとも流水側面に、繊維強化樹脂層が設けられたものが使用され、その固定部が所定間隔毎に締結具にて前記管本体部に固定されていることを特徴とする螺旋案内路付き管。A pipe with a spiral guide path in which a spiral guide path is attached to an inner peripheral surface of a straight tubular pipe main body so that a shaft core portion forms a cavity, wherein the spiral guide path is fixed to the pipe main body. A fiber reinforced resin layer is provided on at least the side of the flowing water of the core material portion provided with the portion, and the fixing portion is fixed to the pipe main body portion with a fastener at predetermined intervals. Features a tube with a spiral guideway. 直管状の管本体部の内周面に、軸芯部が空洞をなすように螺旋案内路が取り付けられた螺旋案内路付き管の製造方法であって、前記螺旋案内路として、前記管本体部との固定部が設けられた芯材部の少なくとも流水側面に、繊維強化樹脂層が設けられたものを使用し、その固定部を所定間隔毎に締結具にて前記管本体部に固定することを特徴とする螺旋案内路付き管の製造方法。A method of manufacturing a pipe with a spiral guide path, wherein a spiral guide path is attached to an inner peripheral surface of a straight tubular pipe main body so that a shaft core forms a cavity, wherein the pipe main body section is used as the spiral guide path. A fiber reinforced resin layer is provided on at least the side of the flowing water of the core portion provided with the fixing portion, and the fixing portion is fixed to the pipe main body with a fastener at predetermined intervals. A method for manufacturing a tube with a spiral guide path, characterized by the following.
JP2003155238A 2003-05-30 2003-05-30 Tube with spiral guideway and its manufacturing method Pending JP2004353829A (en)

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08174703A (en) * 1994-12-21 1996-07-09 Sekisui Chem Co Ltd Manufacture of resin composite tube
JPH09164599A (en) * 1995-12-14 1997-06-24 Sekisui Chem Co Ltd Manufacture of pipe with spiral guide route
JPH09264463A (en) * 1996-03-29 1997-10-07 Sekisui Chem Co Ltd Tube with spiral guide
JPH09269086A (en) * 1996-02-02 1997-10-14 Sekisui Chem Co Ltd Pipe with spiral guide pass
JPH09292066A (en) * 1996-04-25 1997-11-11 Sekisui Chem Co Ltd Spiral having spiral guide passage
JPH1073185A (en) * 1996-06-26 1998-03-17 Sekisui Chem Co Ltd Pipe having spiral guide passage
JP2001227045A (en) * 2000-02-16 2001-08-24 Sekisui Chem Co Ltd Spiral plate-like body fixing method of vertical sewer pipe made of synthetic resin
JP2002122283A (en) * 2000-10-11 2002-04-26 Meipura:Kk Drop shaft
JP2002361640A (en) * 2001-06-08 2002-12-18 Sekisui Chem Co Ltd Molding die for pipe with helical guide channel, method for molding pipe with helical guide channel using this molding die and pipe with helical guide channel molded by molding method

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08174703A (en) * 1994-12-21 1996-07-09 Sekisui Chem Co Ltd Manufacture of resin composite tube
JPH09164599A (en) * 1995-12-14 1997-06-24 Sekisui Chem Co Ltd Manufacture of pipe with spiral guide route
JPH09269086A (en) * 1996-02-02 1997-10-14 Sekisui Chem Co Ltd Pipe with spiral guide pass
JPH09264463A (en) * 1996-03-29 1997-10-07 Sekisui Chem Co Ltd Tube with spiral guide
JPH09292066A (en) * 1996-04-25 1997-11-11 Sekisui Chem Co Ltd Spiral having spiral guide passage
JPH1073185A (en) * 1996-06-26 1998-03-17 Sekisui Chem Co Ltd Pipe having spiral guide passage
JP2001227045A (en) * 2000-02-16 2001-08-24 Sekisui Chem Co Ltd Spiral plate-like body fixing method of vertical sewer pipe made of synthetic resin
JP2002122283A (en) * 2000-10-11 2002-04-26 Meipura:Kk Drop shaft
JP2002361640A (en) * 2001-06-08 2002-12-18 Sekisui Chem Co Ltd Molding die for pipe with helical guide channel, method for molding pipe with helical guide channel using this molding die and pipe with helical guide channel molded by molding method

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