JPH1047568A - Earthquake resistant pipe joint for cable laying pipe line - Google Patents
Earthquake resistant pipe joint for cable laying pipe lineInfo
- Publication number
- JPH1047568A JPH1047568A JP8207018A JP20701896A JPH1047568A JP H1047568 A JPH1047568 A JP H1047568A JP 8207018 A JP8207018 A JP 8207018A JP 20701896 A JP20701896 A JP 20701896A JP H1047568 A JPH1047568 A JP H1047568A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- joint
- leading
- cable laying
- trailing
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L21/00—Joints with sleeve or socket
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/12—Adjustable joints, Joints allowing movement allowing substantial longitudinal adjustment or movement
- F16L27/127—Adjustable joints, Joints allowing movement allowing substantial longitudinal adjustment or movement with means for locking the longitudinal adjustment or movement in the final mounted position
- F16L27/1275—Adjustable joints, Joints allowing movement allowing substantial longitudinal adjustment or movement with means for locking the longitudinal adjustment or movement in the final mounted position by means of at least an external threaded bolt
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints With Sleeves (AREA)
- Joints Allowing Movement (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ケーブル敷設用管
路の耐震管継手に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seismic pipe joint for a cable laying pipeline.
【０００２】[0002]
【従来の技術】従来、電力ケーブルや通信用ファイバケ
ーブルを路面下等に敷設する際には、鋼管とか鋳鉄管
（ダクタイル鋳鉄管を含む）、あるいはポリエチレン管
やコンクリート管など各種の管材料が使用されてきてい
る。ところで、これらの埋設管を設置する場合は、我が
国は地震国であることから耐震検討が必要とされ、たと
えば応答変位法に基づく耐震設計式に従って管路の耐震
性能を確認した後、実際の敷設が行われてきた。しか
し、このような耐震設計がなされているにもかかわら
ず、昨今の埋設管の地震時の被害をみると、液状化した
地盤周辺では管路継手部の抜け出しや折損による破壊事
例が数多く報告されているのが現状である。2. Description of the Related Art Conventionally, when laying a power cable or a communication fiber cable under a road surface, various pipe materials such as a steel pipe or a cast iron pipe (including a ductile cast iron pipe), or a polyethylene pipe or a concrete pipe are used. Have been. By the way, when installing these buried pipes, since Japan is an earthquake country, seismic study is required.For example, after confirming the seismic performance of the pipeline in accordance with the seismic design formula based on the response displacement method, Has been done. However, in spite of such seismic design, recent damage to buried pipes during the earthquake shows that many cases of breakage due to breakage or breakage of pipe joints near the liquefied ground have been reported. That is the current situation.
【０００３】特に、最近の地震工学的知見によれば、側
方流動による地盤水平方向の大変位が地中構造物に被害
を与える主要な原因の一つであることが明らかにされつ
つある。それによると、側方流動による地盤水平方向変
位は数10cmから数m に及ぶものがあるとの観測・調査結
果が報告されている。また、従来の管路の接合は、たと
えば特開昭63−251692号公報の直押推進用被覆鋼管の例
に記載されているような溶接接合による場合が専らであ
るが、その接合作業に数時間を要するため、上記のよう
な継手部での折損などの欠点以外に製造コストが高くつ
くなどの問題がある。In particular, recent seismic engineering knowledge has revealed that large horizontal displacement of the ground due to lateral flow is one of the main causes of damage to underground structures. According to the results, observations and investigations have reported that the horizontal displacement of the ground due to lateral flow can range from several tens of cm to several meters. Also, conventional pipe joints are mainly welded joints as described in, for example, an example of a coated steel pipe for direct push propulsion in JP-A-63-251692. Since time is required, there is a problem that the manufacturing cost is high in addition to the above-mentioned disadvantages such as breakage at the joint.
【０００４】また、特開昭48− 97114号公報には押込式
鋼管継手と称する耐震管継手の一例が開示されている。
その内容は、接続すべき一方の鋼管の端部に取付られた
継手外管に、その内周面に沿って平行に延長する１対の
環状保持金具が固定され、かつ各環状保持金具により形
成された環状溝には環状パッキングの外周突条が接着剤
により嵌合固着され、さらに継手外管内の環状パッキン
グに挿入された他方の鋼管の端部外周には先細のテーパ
部分が設けられ、前記環状パッキングはその一部が継手
外管基端側の環状保持金具の内周面にかぶさった状態で
鋼管の外周面に圧着されているものであるが、やはり鋼
管の端部に大径の継手外管を溶接によって接合する構造
上、コストが高くつくという問題があった。Japanese Patent Application Laid-Open No. 48-97114 discloses an example of an earthquake-resistant pipe joint called a push-in steel pipe joint.
The content is such that a pair of annular holding fittings extending in parallel along the inner peripheral surface thereof are fixed to the joint outer pipe attached to the end of one steel pipe to be connected, and formed by the respective annular holding fittings. An outer peripheral ridge of an annular packing is fitted and fixed to the annular groove by an adhesive, and a tapered taper portion is provided on an outer periphery of an end of the other steel pipe inserted into the annular packing in the outer tube of the joint. The annular packing is a part of which is crimped on the outer peripheral surface of the steel pipe in a state of covering the inner peripheral surface of the annular holding fitting on the proximal end side of the outer pipe of the joint. There is a problem that the cost is high due to the structure of joining the outer tubes by welding.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、上記のよう
な従来技術の有する課題を解決すべくなされたものであ
って、差し込み用鋼管とゴム製の止水リングおよび推進
力伝達用継手部から構成される継手構造を持つ管体でそ
の外面塗覆装に耐摩耗性材料を使用するものであり、地
震時の地盤液状化によって発生する側方流動などの地盤
大変位に対しても埋設管が破損することなく、内部のケ
ーブルを安全に保護することの可能なケーブル敷設用管
路の耐震管継手を提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and is directed to a steel pipe for insertion, a waterproof ring made of rubber, and a joint portion for transmitting thrust. The pipe has a joint structure consisting of a wear-resistant material used for its outer coating and is buried against large ground displacement such as lateral flow caused by ground liquefaction during an earthquake. It is an object of the present invention to provide an earthquake-resistant pipe joint for a cable laying pipeline capable of safely protecting an internal cable without damaging a pipe.
【０００６】[0006]
【課題を解決するための手段】本発明のケーブル敷設用
管路の耐震管継手は、土中に推進埋設すべき先行管体
(1) および後行管体(2) とこれらを接続する継手管(3)
とからなり、前記先行管体(1) と後行管体(2) の外周面
には管軸方向に所定の長さを有する凹状の切欠き部(4)
，(5) を設け、前記継手管(3) にはその両端内面側に
止水リング(12)，(13)を嵌め込むリング用環状溝(6) ，
(7) を、またその両端外面側に前記切欠き部(4) ，(5)
に対向するように抜け止めボルト(8) ，(9) を螺合する
ボルト穴(10)，(11)をそれぞれ設けてなることを特徴と
する。According to the present invention, there is provided a seismic pipe joint for a cable laying pipe which is to be buried in advance in a soil.
(1) and trailing pipe (2) and connecting pipe (3) connecting them
A concave notch (4) having a predetermined length in the pipe axis direction is provided on the outer peripheral surfaces of the leading pipe (1) and the trailing pipe (2).
, (5), and ring-shaped annular grooves (6), into which water-stop rings (12), (13) are fitted on the inner surfaces of both ends of the joint pipe (3).
(7) and the notches (4) and (5)
It is characterized in that bolt holes (10) and (11) for screwing the retaining bolts (8) and (9) are provided so as to face each other.
【０００７】また、本発明は、前記先行管体(1) と後行
管体(2) の外周面にはその管端から所定の位置にピン(1
4), (15)を植設し、前記継手管(3) にはその両端内面側
に止水リング(12)，(13)を嵌め込むリング用環状溝(6)
，(7) を、またその両端外面側に前記ピン(14), (15)
に対向するように管軸方向に所定の長さを有し管端に開
口する稲妻状の切込み部(16), (17)をそれぞれ設けてな
ることを特徴とする。Further, according to the present invention, a pin (1) is provided on the outer peripheral surfaces of the leading pipe (1) and the trailing pipe (2) at predetermined positions from the pipe ends.
4) and (15) are implanted, and a ring-shaped annular groove (6) in which water-stop rings (12) and (13) are fitted into the joint pipe (3) on the inner surface sides at both ends.
, (7) and the pins (14), (15)
Characterized in that lightning-like cuts (16) and (17) each having a predetermined length in the pipe axis direction and opening at the pipe end are provided so as to face the pipes.
【０００８】なお、前記継手管(3) の内面はその中央部
から両端部に向けて漸次肉厚が薄くなるようなテーパ状
とするのがよい。The inner surface of the joint pipe (3) is preferably tapered so that the wall thickness gradually decreases from the center to both ends.
【０００９】[0009]
【発明の実施の形態】以下に、本発明の好適な実施の形
態について、図面を参照して詳しく説明する。図１は本
発明の一実施例を示す縦断面図である。この図におい
て、１は土中に埋設すべきたとえば鋼管などの先行管
体、２は先行管体１と同様に土中に埋設すべきたとえば
鋼管などの後行管体である。３はこれら先行管体１と後
行管体２とを接続する管状の継手管であり、その外面に
はたとえば樹脂などの耐摩耗性材料が塗覆装されてい
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a longitudinal sectional view showing one embodiment of the present invention. In this figure, 1 is a preceding pipe such as a steel pipe to be buried in the soil, and 2 is a trailing pipe such as a steel pipe to be buried in the soil similarly to the preceding pipe 1. Reference numeral 3 denotes a tubular joint pipe for connecting the leading pipe 1 and the trailing pipe 2, and its outer surface is coated with a wear-resistant material such as a resin.
【００１０】先行管体１と後行管体２の端部外周面に
は、端部から所定の位置に管軸方向に長さＬとされる凹
状の切欠き部４，５が設けられる（図２参照）。なお、
切欠き部４，５の個数はたとえば上下左右に計４個設け
るのが好ましいが、管の径や埋設箇所に応じて増減させ
てもかまわない。また、継手管３の両端部内面側にはリ
ング用環状溝６，７がそれぞれ設けられ、またその外面
側には前記切欠き部４，５に対向する位置に抜け止めボ
ルト８，９を螺合するボルト穴10, 11が設けられる。[0010] On the outer peripheral surfaces of the ends of the leading tube 1 and the trailing tube 2, concave notches 4, 5 having a length L in the tube axis direction are provided at predetermined positions from the ends. (See FIG. 2). In addition,
It is preferable that the number of the cutout portions 4 and 5 is, for example, four in total in the upper, lower, left, and right directions, but may be increased or decreased according to the diameter of the pipe or the burial location. Ring grooves 6 and 7 are provided on the inner surfaces of both ends of the joint pipe 3, and retaining bolts 8 and 9 are screwed on the outer surfaces of the joint tubes 3 at positions facing the notches 4 and 5. The corresponding bolt holes 10 and 11 are provided.
【００１１】そこで、継手管３のリング用環状溝６，７
にゴム製の止水リング12, 13を嵌め込んでから、その内
面に先行管体１の後端と後行管体２の先端をそれらの両
端が接触する程度に差し込み、その後、ボルト穴10, 11
に抜け止めボルト８，９を螺合して、その先端を切欠き
部４，５に係止する。このようにして、両管体に継手管
３を固定することによって、先行管体１と後行管体２の
接続を完了する。Therefore, the annular grooves 6, 7 for the ring of the joint pipe 3 are provided.
After inserting rubber waterproof rings 12 and 13 into the inside of the tube, the rear end of the leading tube 1 and the leading end of the trailing tube 2 are inserted into the inner surface thereof so that both ends thereof come into contact with each other. , 11
The retaining bolts 8 and 9 are screwed together, and the tips of the bolts are engaged with the notches 4 and 5. In this way, by fixing the joint pipe 3 to both pipes, the connection between the leading pipe 1 and the trailing pipe 2 is completed.
【００１２】このようにして管路を構成することによ
り、たとえ地震が発生しても、地盤の管軸方向の変位が
最大Ｌに到達するまでは、継手管３は先行管体１や後行
管体２から抜け出ることはない。また、止水リング12,
13の弾性変形によって継手部分はたわみを生じるから、
側方流動によって管軸に対する直角方向の変位が加わっ
ても、その軸方向変位や回転あるいは管断面変形によっ
て吸収することができる。By configuring the pipe in this way, even if an earthquake occurs, the joint pipe 3 is connected to the leading pipe 1 and the trailing pipe 1 until the displacement of the ground in the pipe axis direction reaches the maximum L. There is no escape from the tube 2. In addition, waterproof ring 12,
Because the joint part bends due to the elastic deformation of 13,
Even if a displacement in a direction perpendicular to the tube axis is applied by the lateral flow, the displacement can be absorbed by the axial displacement, rotation, or deformation of the tube cross section.
【００１３】なお、図１での継手管３の管軸方向の内面
形状はストレート状としているが、図３に示すようにそ
の中央部から両端部に向けて漸次肉厚が薄くなるような
テーパ状とした継手管３Ａを用いるようにすれば、継手
部の屈曲角度を増すことができるから、複雑な地形条件
での推進施工に対応することができる。図４は本発明の
他の実施例を示したものである。すなわち、先行管体１
と後行管体２の端部から所定の位置に、切欠き部４，５
の代わりにピン14, 15を植設するようにし、一方、継手
管３Ｂにはボルト穴10, 11の代わりに切込み部16, 17を
穿設する。この切込み部は、図５に一方の切込み部17の
平面図を示すが、まず端部から中央部に向かって管軸に
沿って第１の切込み部17ａを穿設し、ついで円周方向に
対して端部側に向かう斜めの第２の切込み部17ｂを穿設
し、さらに再度中央部に向かって管軸に沿って長さＬな
る第３の切込み部17ｃを穿設して、いわゆる稲妻状の溝
を設ける。なお、ピン14, 15の数は切欠き部４，５と同
様に外周面に複数設けるのがよい。Although the inner surface of the joint pipe 3 in FIG. 1 has a straight shape in the pipe axis direction, as shown in FIG. 3, the taper is such that the wall thickness gradually decreases from the center to both ends. If the joint pipe 3A having the shape is used, the bending angle of the joint portion can be increased, so that it is possible to cope with propulsion construction under complicated terrain conditions. FIG. 4 shows another embodiment of the present invention. That is, the leading pipe 1
And notches 4, 5 at predetermined positions from the end of the trailing pipe 2
Instead, pins 14 and 15 are implanted, while notches 16 and 17 are formed in the joint pipe 3B instead of the bolt holes 10 and 11. FIG. 5 shows a plan view of one of the notches 17 in the cut portion. First, a first cut portion 17a is formed along the pipe axis from the end to the center, and then, in the circumferential direction. On the other hand, a second cut portion 17b obliquely directed toward the end portion is formed, and a third cut portion 17c having a length L along the pipe axis is formed again toward the center portion, so-called lightning. A groove is provided. It is preferable that a plurality of pins 14 and 15 are provided on the outer peripheral surface in the same manner as the notches 4 and 5.
【００１４】このように構成された継手管３にたとえば
後行管体２を接続するときは、後行管体２のピン15に継
手管３の第１の切込み部17ａを位置合わせしてから後行
管体２側を押し込み、さらに第２の切込み部17ｂに沿う
ように円周方向に回転させながら引き戻した後、再度第
３の切込み部17ｃに沿って管軸方向に押し込むのであ
る。なお、先行管体１についても同様の手順で接続する
ことができる。When, for example, the trailing pipe 2 is connected to the joint pipe 3 thus configured, the first notch 17a of the joint pipe 3 is aligned with the pin 15 of the trailing pipe 2. The trailing tube 2 is pushed in, pulled back while rotating in the circumferential direction along the second notch 17b, and then pushed again in the axial direction of the tube along the third notch 17c. The preceding tube 1 can be connected in the same procedure.
【００１５】なお、図４での継手管３の管軸方向の内面
形状はストレート状としているが、図６に示すようにテ
ーパ状にした継手管３Ｃとすれば、さらに曲線運動を要
する推進施工に対応することができる。Although the inner surface of the joint pipe 3 in the pipe axis direction in FIG. 4 is straight, the joint pipe 3C having a tapered shape as shown in FIG. Can be handled.
【００１６】[0016]
【発明の効果】以上説明したように、本発明によれば、
差し込み式の継手管を用いるようにしたので、以下のよ
うな効果を奏するものである。 接合が簡単でかつ短時間で行うことができるから、工
費を大幅に節減することができること。 切欠き部あるいは切込み部の管軸方向の長さを適当に
セットすることにより、地盤の変位に対して追随するこ
とができること。 止水リングの弾性変形や管端のテーパ加工によって曲
線的な運動も可能であるから、複雑な地形条件での推進
施工にも適用可能であること。As described above, according to the present invention,
Since the plug-in type joint pipe is used, the following effects can be obtained. Since the joining can be performed easily and in a short time, the cost can be greatly reduced. By appropriately setting the length of the notch or notch in the pipe axis direction, it can follow the displacement of the ground. Curved movement is also possible by elastic deformation of the water stop ring and tapering of the pipe end, so that it can be applied to propulsion construction under complicated terrain conditions.
【図１】本発明の一実施例を示す側断面図である。FIG. 1 is a side sectional view showing one embodiment of the present invention.
【図２】管体の切欠き部を示す部分平面図である。FIG. 2 is a partial plan view showing a cutout portion of a tubular body.
【図３】継手管の別の態様を示す部分側断面図である。FIG. 3 is a partial side sectional view showing another embodiment of the joint pipe.
【図４】本発明の他の実施例を示す部分側断面図であ
る。FIG. 4 is a partial side sectional view showing another embodiment of the present invention.
【図５】管体の切込み部を示す部分平面図である。FIG. 5 is a partial plan view showing a cut portion of the tubular body.
【図６】継手管の別の態様を示す部分側断面図である。FIG. 6 is a partial sectional side view showing another embodiment of the joint pipe.
１ 先行管体 ２ 後行管体 ３，３Ａ，３Ｂ，３Ｃ 継手管 ４，５ 切欠き部 ６，７ リング用環状溝 ８，９ 抜け止めボルト 10, 11 ボルト穴 12, 13 止水リング 14, 15 ピン 16, 17 切込み部 17ａ 第１の切込み部 17ｂ 第２の切込み部 17ｃ 第３の切込み部 1 Leading pipe 2 Trailing pipe 3, 3A, 3B, 3C Joint pipe 4, 5 Notch 6, 7 Ring groove 8, 9 Retaining bolt 10, 11 Bolt hole 12, 13 Water stop ring 14, 15 pin 16, 17 notch 17a first notch 17b second notch 17c third notch
Claims (3)
び後行管体(2) とこれらを接続する継手管(3) とからな
り、前記先行管体(1) と後行管体(2) の外周面には管軸
方向に所定の長さを有する凹状の切欠き部(4) ，(5) を
設け、前記継手管(3) にはその両端内面側に止水リング
(12)，(13)を嵌め込むリング用環状溝(6) ，(7) を、ま
たその両端外面側に前記切欠き部(4) ，(5) に対向する
ように抜け止めボルト(8) ，(9) を螺合するボルト穴(1
0)，(11)をそれぞれ設けてなることを特徴とするケーブ
ル敷設用管路の耐震管継手。The present invention comprises a leading pipe (1) and a trailing pipe (2) to be buried underground in the soil, and a joint pipe (3) for connecting the leading pipe (1) and the trailing pipe (2). Concave notches (4) and (5) having a predetermined length in the pipe axis direction are provided on the outer peripheral surface of the pipe (2). ring
Ring annular grooves (6) and (7) into which (12) and (13) are fitted, and retaining bolts (8) are formed on the outer surfaces of both ends so as to face the notches (4) and (5). ), (9) bolt holes (1
An earthquake-resistant pipe joint for a cable laying pipe, characterized by comprising (0) and (11).
面にはその管端から所定の位置にピン(14), (15)を植設
し、前記継手管(3) にはその両端内面側に止水リング(1
2)，(13)を嵌め込むリング用環状溝(6) ，(7) を、また
その両端外面側に前記ピン(14), (15)に対向するように
管軸方向に所定の長さを有し管端に開口する稲妻状の切
込み部(16), (17)をそれぞれ設けてなることを特徴とす
る請求項１記載のケーブル敷設用管路の耐震管継手。2. Pins (14) and (15) are implanted at predetermined positions from the pipe ends on the outer peripheral surfaces of the leading pipe (1) and the trailing pipe (2). 3) Waterproof rings (1
Ring annular grooves (6) and (7) into which 2) and (13) are fitted, and a predetermined length in the pipe axis direction on the outer surface of both ends so as to face the pins (14) and (15). 2. A seismic pipe joint for a cable laying pipe according to claim 1, wherein lightning-like cuts (16) and (17) each having an opening at a pipe end are provided.
両端部に向けて漸次肉厚が薄くなるようなテーパ状とさ
れることを特徴とする請求項１ないし２のいずれかに記
載のケーブル敷設用管路の耐震管継手。3. The joint pipe (3) according to claim 1, wherein an inner surface of the joint pipe (3) is tapered so that a thickness thereof gradually decreases from a central portion toward both ends. Seismic pipe joint for the cable laying pipeline described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8207018A JPH1047568A (en) | 1996-08-06 | 1996-08-06 | Earthquake resistant pipe joint for cable laying pipe line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8207018A JPH1047568A (en) | 1996-08-06 | 1996-08-06 | Earthquake resistant pipe joint for cable laying pipe line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1047568A true JPH1047568A (en) | 1998-02-20 |
Family
ID=16532847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8207018A Pending JPH1047568A (en) | 1996-08-06 | 1996-08-06 | Earthquake resistant pipe joint for cable laying pipe line |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1047568A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10130924A1 (en) * | 2001-06-27 | 2003-09-04 | Wolf Gmbh | Connector for inner and outer hydraulic pipes, e.g. on gas heater, comprises U- or C-shaped clip fitted into bores in outer tube to limit its telescopic movement with respect to inner |
| GB2456515A (en) * | 2008-01-15 | 2009-07-22 | Paul Davidson | Slidable pipe coupling |
| KR20160001954U (en) * | 2014-11-28 | 2016-06-08 | 주식회사 일성아이에스테크웰 | Connectors for easy welding polarity conversion |
-
1996
- 1996-08-06 JP JP8207018A patent/JPH1047568A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10130924A1 (en) * | 2001-06-27 | 2003-09-04 | Wolf Gmbh | Connector for inner and outer hydraulic pipes, e.g. on gas heater, comprises U- or C-shaped clip fitted into bores in outer tube to limit its telescopic movement with respect to inner |
| GB2456515A (en) * | 2008-01-15 | 2009-07-22 | Paul Davidson | Slidable pipe coupling |
| WO2009090378A1 (en) * | 2008-01-15 | 2009-07-23 | Fluid Leader Ltd | Pipe connection |
| KR20160001954U (en) * | 2014-11-28 | 2016-06-08 | 주식회사 일성아이에스테크웰 | Connectors for easy welding polarity conversion |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2024032801A (en) | Connecting structure of piping and connecting method of the same | |
| JPH1047568A (en) | Earthquake resistant pipe joint for cable laying pipe line | |
| JPS5948600A (en) | Tunnel covering construction structure | |
| JP7213066B2 (en) | Propulsion force transmission device for seismic pipe propulsion installation method | |
| JP3290549B2 (en) | Connection structure and method of pipe to manhole | |
| JP4143600B2 (en) | Repair member for cable steel pipe | |
| JP2000081186A (en) | Snap tap with saddle | |
| JP3083418B2 (en) | Pipe fittings for water pipe bridges | |
| JP2906394B2 (en) | Fume pipe joint structure | |
| JP3497705B2 (en) | Flexible connection pipe | |
| JPH08333795A (en) | Joint structure | |
| JP3612363B2 (en) | Manhole and pipe connecting device | |
| JP2836810B2 (en) | Flexible precast concrete perforated pipe | |
| JPH034093A (en) | Connecting device for pipe | |
| JPS6135829Y2 (en) | ||
| JPH1047569A (en) | Earthquake resistant pipe joint and connection ring using this earthquake resistant pipe joint | |
| JP3089767U (en) | Segment connection bracket | |
| JPH094038A (en) | Joint structure | |
| JP2000170958A (en) | Connecting structure of pipe body and underground structure | |
| JP3916412B2 (en) | Seismic pipe joint for propulsion method with propulsion jig | |
| JP3713396B2 (en) | Manhole fitting | |
| JPH1061841A (en) | Expansion joint and piping repair method | |
| JPH11293690A (en) | Manhole joint and connection structure of manhole joint | |
| JP3627939B2 (en) | Connecting device for pipes such as concrete pipes | |
| JPS634869Y2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20060322 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20060405 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20060808 |