JPH03131429A - Piping repair member - Google Patents
Piping repair memberInfo
- Publication number
- JPH03131429A JPH03131429A JP26451089A JP26451089A JPH03131429A JP H03131429 A JPH03131429 A JP H03131429A JP 26451089 A JP26451089 A JP 26451089A JP 26451089 A JP26451089 A JP 26451089A JP H03131429 A JPH03131429 A JP H03131429A
- Authority
- JP
- Japan
- Prior art keywords
- divided bodies
- pipe
- crack
- cylindrical
- divided
- 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
Links
- 239000000463 material Substances 0.000 claims abstract description 4
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims description 9
- 238000007789 sealing Methods 0.000 abstract description 7
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 239000000956 alloy Substances 0.000 abstract 2
- 229910045601 alloy Inorganic materials 0.000 abstract 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 241000219122 Cucurbita Species 0.000 description 1
- 235000009852 Cucurbita pepo Nutrition 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920001021 polysulfide Polymers 0.000 description 1
- 239000005077 polysulfide Substances 0.000 description 1
- 150000008117 polysulfides Polymers 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Landscapes
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、形状記憶合金製の部材の組み合わせからなる
配管補修用部材に係り、特に、航空機等の油圧系統の配
管補修に適した配管補修用パイプに関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a pipe repair member made of a combination of members made of shape memory alloy, and is particularly suitable for pipe repair of hydraulic systems of aircraft, etc. Regarding pipes for use.
油圧系統の配管部に作動油の漏れが起った場合の漏洩箇
所の修理は、その部分をアセチレンバーナ等で溶断し、
それに代えて新たな配管部材を溶接によりあるいは継手
を介し接続することで行っている。If hydraulic oil leaks from the piping of the hydraulic system, repair the leak by cutting the leak with an acetylene burner, etc.
Instead, new piping members are connected by welding or via joints.
ところで、近年、形状記憶合金が様々な技術分野で利用
されており、上記の補修作業の簡便化、あるいは溶接等
が行なえないところの補修のために、配管補修用の部材
の材質として形状記憶合金を応用したものが知られてい
る。このような従来技術としては、例えば、特開昭５９
−９３２４１号公報、特開昭５９−９３２４２号公報、
特開昭６３−１９５１９８号公報に開示されている配管
補修用部材を挙げることができる。By the way, in recent years, shape memory alloys have been used in various technical fields, and shape memory alloys have been used as materials for pipe repair parts to simplify the repair work mentioned above or to repair areas where welding etc. cannot be performed. There are known applications of this. As such conventional technology, for example, Japanese Patent Application Laid-open No. 1983
-93241 publication, JP-A-59-93242 publication,
The pipe repair member disclosed in Japanese Unexamined Patent Publication No. 63-195198 can be mentioned.
上記配管ｈｉｌｉ修用部材は、形状記憶合金を材質とす
る一組の半円筒状の部材をその半径方向両端縁を折曲げ
て形成した連結部で互いに係合させ、これらを被補修部
を含む配管外周面に外嵌する形で装穆した後加熱を施す
ことにより、元の記憶形状に復元するのを利用して被補
修部位をシールしようとするものである。The above-mentioned piping hili repair member includes a pair of semi-cylindrical members made of a shape memory alloy, which are engaged with each other at connecting portions formed by bending both radial edges of the semi-cylindrical members, and includes the part to be repaired. This method attempts to seal the area to be repaired by applying heat after fitting it around the outer circumferential surface of the pipe and restoring it to its original memorized shape.
このような従来技術における連結部は、単に板の折り曲
がった部分を互いに係合させているだけの構造であるた
め、十分な強度を確保出来ない懸念がある。Since the connecting portion in such a conventional technique has a structure in which the bent portions of the plates are simply engaged with each other, there is a concern that sufficient strength cannot be ensured.
そこで、本発明の目的は、上記従来技術の有する問題点
を解消し、油圧系統の漏洩箇所の補修を短時間で簡便に
行なうことができるばかりでなく補修用部材の連結強度
も充分得られる配管補修用部材を提供することにある。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve the above-mentioned problems of the prior art, and to provide a piping system that not only allows leakage points in a hydraulic system to be easily repaired in a short period of time, but also provides sufficient connection strength for repair parts. The purpose of the present invention is to provide repair parts.
上記の目的を達成するために本発明は、形状記憶合金を
材質とし互いに結合して被補修管の外径よりも大きく拡
管成形された円筒体をなす部材の内径が被補修管の外径
よりも小さくなるように形状記憶された配管補修用部材
において、円筒体を軸方向に分割してなる一組の分割体
と、上記隣合う分割体の合せ目に嵌め込まれる連結片と
からなることを特徴とするものである。In order to achieve the above object, the present invention provides a cylindrical body made of a shape memory alloy and joined together to form a cylindrical body that is expanded to be larger than the outer diameter of the pipe to be repaired.The inner diameter of the member is larger than the outer diameter of the pipe to be repaired. A piping repair member whose shape is memorized so as to be smaller in size is composed of a pair of divided bodies formed by dividing a cylindrical body in the axial direction, and a connecting piece that is fitted into the joint between the adjacent divided bodies. This is a characteristic feature.
（作 用）
本発明によれば、加熱することによって分割体が元の形
状に収縮してシール部材を被補修部位に密着せしめ、同
時に連結片の分割体との噛合いが強固になる。(Function) According to the present invention, heating causes the divided body to shrink to its original shape, bringing the sealing member into close contact with the repaired area, and at the same time, the engagement of the connecting piece with the divided body becomes firm.
（実施例）
以下、本発明による配管補修用部材の一実施例を添付の
図面を参照しながら説明する。(Example) Hereinafter, an example of the pipe repair member according to the present invention will be described with reference to the accompanying drawings.
第１図において、符号１は、本発明の一実施例による配
管補修用部材を示し、この配管補修用部材１は、形状記
憶合金で製作され、円筒体を軸方向に複数個に分割した
ものであり、本実施例における配管補修用部材１は、二
分割した半円筒状の分割体２ａ、２ｂと、これらの分割
体２ａ、 ２ｂを一体的に結合するための連結片３と
から構成されている。In FIG. 1, reference numeral 1 indicates a pipe repair member according to an embodiment of the present invention, and this pipe repair member 1 is made of a shape memory alloy, and is a cylindrical body divided into a plurality of pieces in the axial direction. The pipe repair member 1 in this embodiment is composed of two semi-cylindrical divided bodies 2a and 2b, and a connecting piece 3 for integrally connecting these divided bodies 2a and 2b. ing.
前記分割体２ａの両端縁には連結片３．３．・・・の半
分が嵌合する嵌め込み穴４．４が所定のピッチをおいて
切欠形成され、同様に、分割体２ｂにも連結片３，３．
・・・の他方側が嵌合する嵌め込み穴５，５が同じピッ
チで形成されている。Connecting pieces 3.3. are provided on both end edges of the divided body 2a. Fitting holes 4.4 into which the halves of .
The fitting holes 5, 5 into which the other side of the... are fitted are formed at the same pitch.
本実施例において、連結片３は、図示されるようにその
中央部分がくびれ、両端側に向って大きく湾曲するひょ
うたん型の形状を呈するものであり、この連結片３が嵌
合できるように嵌め込み穴４．５の形状および大きさが
設定される。この連結片３の形状は、実施例のようにひ
ょうたん型が好適であるが、これに限定されるものでは
なく、分割体２ａ、２ｂの連結状態を維持できる形状な
らば、第４図（ａ）、 （ｂ）に示されるように、１
字型の連結片３ ａ ｓあるいは、さらにこの連結片３
ａの変形として中央のくびれに向って両端から傾斜する
形状の連結片３ｂを用いてもよい。In this embodiment, the connecting piece 3 has a gourd-shaped shape with a constricted central portion and a large curve toward both ends as shown in the figure. The shape and size of the hole 4.5 is set. The shape of the connecting piece 3 is preferably a gourd shape as in the embodiment, but is not limited to this, and any shape that can maintain the connected state of the divided bodies 2a and 2b can be used as shown in Fig. 4 (a). ), as shown in (b), 1
character-shaped connecting piece 3 a s or further this connecting piece 3
As a modification of a, a connecting piece 3b having a shape that slopes from both ends toward the central constriction may be used.
さらに、本実施例では、以上のような連結片３を分割体
２ａ、２ｂの両側縁に３つ１組で嵌合させるものとした
が、連結片３の数はこれに限定されず、１対以上の連結
片３の数は、当該配管補修用部材のサイズ等に合わせて
任意の数にしてよい。Further, in this embodiment, the above-described connecting pieces 3 are fitted in sets of three to both side edges of the divided bodies 2a and 2b, but the number of connecting pieces 3 is not limited to this, and may be one. The number of pairs or more of connecting pieces 3 may be set to any number depending on the size of the pipe repair member.
一方、第２図において、分割体２ａ、２ｂと連結片３と
を結合してなる一体の円筒体の内径は、補修を要する配
管バイブロの外径よりも小さく設定される。そして、そ
の後塑性加工により配管バイブロの外径よりも内径が大
きくなるように拡管成形されている。On the other hand, in FIG. 2, the inner diameter of the integral cylindrical body formed by combining the divided bodies 2a, 2b and the connecting piece 3 is set smaller than the outer diameter of the piping vibro that requires repair. Then, the tube is expanded by plastic working so that the inner diameter is larger than the outer diameter of the piping vibro.
なお、上記半円筒状の分割体２ａ、２ｂのうち少なくと
も一方の裏面には、配管の漏洩箇所を閉塞するためのシ
ール部材７、例えば、その材質が多硫化ゴム系のものが
貼着若しくは塗布されている。A sealing member 7, for example, made of polysulfide rubber, is pasted or coated on the back surface of at least one of the semi-cylindrical divided bodies 2a and 2b. has been done.
本実施例による配管補修用部材は以上のように構成され
るものであり、次に実際の配管作業との関連においてそ
の作用について説明する。The piping repair member according to this embodiment is constructed as described above, and its function will be explained next in relation to actual piping work.
先ず、第３図（ａ）において、配管バイブロに亀裂８が
生じ、この亀裂８から作動油が漏れ出したとする。First, in FIG. 3(a), it is assumed that a crack 8 has occurred in the piping vibro, and hydraulic oil has leaked from this crack 8.
そこで、第３図Ｃｂ）に示されるように、シール部材７
により亀裂８がおおわれるように半円筒状の分割体２ａ
、２ｂを配管バイブロに対して装着するとともに、連結
片３，３．・・・を嵌め込み穴４．４．・・・、５，５
．・・・に嵌合させる。以上の作業は、配管バイブロを
溶断したり、また、部材の取付けに特別な治具を用いた
りする必要がないため、簡便にしかも短時間で行なうこ
とができる。Therefore, as shown in FIG. 3Cb), the sealing member 7
A semi-cylindrical divided body 2a so that the crack 8 is covered by
, 2b to the piping vibro, and connect the connecting pieces 3, 3. ... into the hole 4.4. ..., 5, 5
．． ...to be fitted. The above work can be done simply and in a short time because there is no need to melt down the piping vibro or use special jigs to attach the members.
その後、第３図（Ｃ）に示されるコイルヒータ９、およ
び電源１０からなる加熱手段を用いて円筒状に組み合さ
れた分割体２ａ、２ｂをその材質である形状記憶合金の
所定の動作温度以上に加熱する。このようにして加熱さ
れると、半円筒状の分割体２ａ、２ｂと連結片３，３と
が結合してなる円筒体は、その材質の形状記憶合金の一
方向性記憶効果によって、記憶した元の形状に収縮、す
なわち、配管パイプの外径よりも小さな内径に縮径しよ
うとするため、シール部材７は亀裂８に対してシール性
良好に密着し、また、この時、収縮により力がかかった
状態で半円筒状分割体２ａ。Thereafter, using heating means consisting of a coil heater 9 and a power source 10 shown in FIG. Heat to above temperature. When heated in this way, the cylindrical body formed by combining the semi-cylindrical divided bodies 2a, 2b and the connecting pieces 3, 3 has a memorized memory due to the unidirectional memory effect of the shape memory alloy made of the material. Since the sealing member 7 tries to contract to its original shape, that is, to reduce its diameter to an inner diameter smaller than the outer diameter of the piping, the sealing member 7 adheres to the crack 8 with good sealing performance, and at this time, the force is reduced due to the contraction. The semi-cylindrical divided body 2a is in the suspended state.
２ｂと連結片３，３．・・・は、互いに係合し合ってい
るため、これらの連結強度は高く、従って、円筒状に組
み合わされた分割体２ａ、２ｂの装若状態がゆるむこと
が防止される。2b and connecting pieces 3,3. ... are engaged with each other, so their connection strength is high, and therefore, the cylindrically combined divided bodies 2a, 2b are prevented from loosening in their youthful state.
以上の実施例においては、２分割の分割体２ａ。In the above embodiment, the divided body 2a is divided into two parts.
２ｂを円筒状に組み合わせて構成したが、これに限定さ
れるものではなく、例えば、３分割に構成してもよい。2b are combined into a cylindrical shape, but the structure is not limited to this, and for example, the structure may be divided into three parts.
（発明の効果）
以上、説明したように、本発明によれば、形状記憶合金
を材質として配管補修用部材を、円筒体を軸方向に分割
してなる一組の分割体と、隣合う分割体の合せ目に嵌め
込まれる連結片とで構成したから、被補修管を切断する
ことなく簡便な手順で迅速にその補修を出来るともに、
分割体と連結片の係合が緊密に保たれるので、連結部分
の強度が十分維持されるという効果を奏するものである
。(Effects of the Invention) As described above, according to the present invention, a pipe repair member made of a shape memory alloy is divided into a set of divided bodies formed by dividing a cylindrical body in the axial direction, and adjacent divided bodies. Since it is composed of a connecting piece that is fitted into the joint of the body, it is possible to quickly repair the pipe with simple procedures without cutting the pipe to be repaired.
Since the engagement between the divided body and the connecting piece is maintained tightly, the strength of the connecting portion is sufficiently maintained.
そして、連結部が従来のものと異なり円筒体の表面に対
してフラットになっており、突出する部分がなくなるこ
とから、軽量化の要請が高い部分の補修に適している。Moreover, unlike conventional ones, the connecting part is flat against the surface of the cylindrical body, and there is no protruding part, so it is suitable for repairing parts where there is a strong demand for weight reduction.
第１図は本発明に係る配管補修用部材の一実施例を表わ
した分解斜視図、第２図は当該配管補修用部材の断面図
、第３図は当該配管補修用部材による補修作業の説明図
、第４図（ａ）、 （ｂ）は、当該配管補修用部材を
構成する連結片の変形例を表示した図である。
１・・・配管補修用部材、２ａ、２ｂ・・・分割体、３
・・・連結片、４．５・・・嵌め込み穴、６・・・配管
パイプ、７・・・シール部材。Fig. 1 is an exploded perspective view showing one embodiment of the pipe repair member according to the present invention, Fig. 2 is a sectional view of the pipe repair member, and Fig. 3 is an explanation of repair work using the pipe repair member. Figures 4(a) and 4(b) are diagrams showing modified examples of the connecting piece constituting the pipe repair member. 1... Piping repair member, 2a, 2b... Divided body, 3
... Connecting piece, 4.5... Fitting hole, 6... Piping pipe, 7... Seal member.
Claims (1)
よりも大きく拡管成形された円筒体をなす部材の内径が
被補修管の外径よりも小さくなるように形状記憶された
配管補修用部材において、円筒体を軸方向に分割してな
る一組の分割体と、上記隣合う分割体の合せ目に嵌め込
まれる連結片とからなることを特徴とする配管補修用部
材。For pipe repair, the material is made of shape memory alloy and is bonded to each other to form a cylindrical body that is expanded to be larger than the outer diameter of the pipe to be repaired.The inner diameter of the member is smaller than the outer diameter of the pipe to be repaired, and is used for pipe repair. A member for repairing piping, characterized in that the member comprises a set of divided bodies formed by dividing a cylindrical body in the axial direction, and a connecting piece that is fitted into the seam of the adjacent divided bodies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26451089A JPH03131429A (en) | 1989-10-11 | 1989-10-11 | Piping repair member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26451089A JPH03131429A (en) | 1989-10-11 | 1989-10-11 | Piping repair member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03131429A true JPH03131429A (en) | 1991-06-05 |
Family
ID=17404247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26451089A Pending JPH03131429A (en) | 1989-10-11 | 1989-10-11 | Piping repair member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03131429A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010051972A (en) * | 2008-08-26 | 2010-03-11 | Showa Denko Kk | Method of manufacturing joined structure, joined structure and steering support beam |
-
1989
- 1989-10-11 JP JP26451089A patent/JPH03131429A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010051972A (en) * | 2008-08-26 | 2010-03-11 | Showa Denko Kk | Method of manufacturing joined structure, joined structure and steering support beam |
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