JPS6333955B2 - - Google Patents
Info
- Publication number
- JPS6333955B2 JPS6333955B2 JP59064783A JP6478384A JPS6333955B2 JP S6333955 B2 JPS6333955 B2 JP S6333955B2 JP 59064783 A JP59064783 A JP 59064783A JP 6478384 A JP6478384 A JP 6478384A JP S6333955 B2 JPS6333955 B2 JP S6333955B2
- Authority
- JP
- Japan
- Prior art keywords
- hollow base
- pipe
- pipes
- fluid
- guide rod
- 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.)
- Expired
Links
- 239000012530 fluid Substances 0.000 claims description 41
- 238000003466 welding Methods 0.000 description 16
- 230000007547 defect Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000009428 plumbing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005493 welding type Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
- B23K37/0531—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor internal pipe alignment clamps
Description
【発明の詳細な説明】
本発明は配管用等のパイプを突合わせ溶接によ
り接合するに際して、接合すべき両側のパイプ
を、該パイプの内側から所定位置に保持するため
のパイプ内側クランプ装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pipe inner clamp device for holding pipes on both sides to be joined in a predetermined position from the inside of the pipes when joining pipes for plumbing etc. by butt welding. It is.
高品質のパイプ突合わせ溶接を行なう為には溶
接準備工程として、接合すべき開先を適正な形状
とする事、開先同士を適正な間隔に保持する事並
びに芯出しを正確に行ない開先内面同士の食違を
最小にする事等が必要である。この為従来中口径
パイプ（外径約50mmから500mm程度…以下中口径
パイプとはこの程度のパイプを云う。）では、ま
ず第１図ａに示すように接合すべきパイプａ，
a′の一方側の外周に３枚〜８枚程度の複数の長方
形板ｂ，ｂ…をその他端側が開先ｃから突出する
ように一端側を溶接仮付けし、次いで第１図ｂに
示すように前記複数の長方形板ｂ，ｂ…の他端側
が形成する筒状空間内に他方側のパイプa′を挿入
し、開先同士を適正な間隔に調節すると共に、芯
出しを行なつて開先内面同士の食違を最小に調節
した状態で前記長方形板ｂ，ｂ…の他端を他方側
のパイプa′に仮付けし、このように保持した状態
で溶接を行なうという方法が一般的に行なわれて
いる。しかしながら以上の方法は簡便に見えるも
のの正確な開先の保持には相当な熟練を有するこ
とに加えて、長方形板の存在によつて開先全周に
渡つての連続的な溶接を行なえないので溶接作業
に熟練を必要とするばかりでなく溶接欠陥が生じ
易く、更に仮付けした長方形板の除去に伴いパイ
プの外面に傷が生じ、しかも該長方形板は使い棄
てである為資源の無駄使いとなるというような各
種の欠点がある。 In order to perform high-quality pipe butt welding, the welding preparation process involves making the grooves to be joined into an appropriate shape, maintaining the grooves at appropriate intervals, and accurately centering the grooves. It is necessary to minimize the discrepancy between the inner surfaces. For this reason, in conventional medium-diameter pipes (about 50 mm to 500 mm in outer diameter...hereinafter referred to as medium-diameter pipes), first, as shown in Figure 1 a, the pipes a,
A plurality of about 3 to 8 rectangular plates b, b... are tack-welded to the outer periphery of one side of a' so that the other end protrudes from the groove c, and then as shown in Fig. 1b. Insert the other side pipe a' into the cylindrical space formed by the other ends of the plurality of rectangular plates b, b..., adjust the grooves to an appropriate distance, and perform centering. A common method is to temporarily attach the other ends of the rectangular plates b, b... to the pipe a' on the other side while adjusting the discrepancy between the inner surfaces of the grooves to a minimum, and to perform welding while holding them in this manner. It is carried out according to However, although the above method seems simple, it requires considerable skill to maintain an accurate groove, and it is not possible to weld continuously over the entire circumference of the groove due to the presence of the rectangular plate. Not only does the welding work require skill, but it is also prone to welding defects.Furthermore, removing the temporarily attached rectangular plate causes damage to the outer surface of the pipe, and since the rectangular plate is disposable, it is a waste of resources. There are various drawbacks such as:
そこでかかる長方形板に代わるものとして、接
合すべきパイプを外側から保持する着脱可能な外
側クランプ装置も数多く提案されているが、これ
ら外側クランプ装置は、パイプの保持部材や連結
体等が溶接棒の運動を制約し、開先全周に渡つて
の連続的な溶接が非常に困難で、やはり長方形板
の場合と同様に溶接作業に熟練を必要とするばか
りでなく溶接欠陥も生じ易いという欠点と共に、
開先同士の内面の食違い補正性能も良くないとい
うような共通の欠点を有するため広くは用いられ
ていない。またパイプライン用等の大口径パイプ
に於いては、接合すべきパイプを内側から保持可
能な内側クランプ装置も使用されているが、これ
らは構造が複雑で大がかりな装置であつて、価格
等の点も含め中口径パイプに使用し得る程度に小
型化するのが非常に困難なばかりでなく、もし小
型化し得たとしてもクランプ位置の微調整等の操
作を如何ようにして行なうか等解決すべき点は非
常に多い。 As an alternative to such rectangular plates, many removable external clamp devices that hold the pipes to be joined from the outside have been proposed. It restricts movement, making it extremely difficult to weld continuously over the entire circumference of the groove, and as with rectangular plates, it not only requires skill in welding work, but also has the disadvantage that welding defects are likely to occur. ,
It is not widely used because it has common drawbacks such as poor performance in correcting discrepancies between the inner surfaces of the grooves. In addition, for large-diameter pipes such as those for pipelines, internal clamping devices that can hold the pipes to be joined from the inside are also used, but these are large-scale devices with complicated structures, and are expensive. Not only is it extremely difficult to miniaturize the pipe to the extent that it can be used for medium-diameter pipes, but even if it were possible to miniaturize it, it would be difficult to solve the problem of how to perform operations such as fine adjustment of the clamp position. There are so many points to be made.
本発明は極めて合理的な構成により、中口径パ
イプに使用することができ、しかも操作も容易な
内側クランプ装置を提供することを目的とするも
のである。以下実施例に基づいて詳細に説明する
と次の通りである。 It is an object of the present invention to provide an inner clamp device which has an extremely rational structure and can be used for medium diameter pipes, and which is easy to operate. A detailed explanation will be given below based on an example.
符号１，１′は対象とするパイプ、即ち接合す
べきパイプを示すもので、２は該パイプ１，１′
内を移動自在な中空基体である。該中空基体２の
外形は後述するように球状とする他、楕円球状、
多面体状、円柱状等、パイプ１，１′内を移動自
在な形状であれば適宜である。該中空基体２内の
中心軸Ｏ方向に、一側から他側に案内棒部３を設
け、該案内棒部３に移動自在に嵌めた環状体をピ
ストン４，４′とする加圧室５，５′を、前記中空
基体２内の一側と他側に設けると共に、夫々の加
圧室５，５′に対応する流体導入口６，６′を前記
中空基体２の一側に設け、前記他側の加圧室５′
は前記案内棒部３内に構成した流体連通部７を介
して前記流体導入口６′と連通させる。更に前記
中空基体２の中間部外周には、前記溶接すべきパ
イプ１，１′の夫々の端部に対応した複数のクラ
ンプ部材８，８′を突出、引込自在に設け、該ク
ランプ部材８，８′を夫々前記ピストン４，４′に
よつて作動するように構成する。符号９，９′は
該ピストン４，４′とクランプ部材８，８′を連結
する作動リンクであるが、ピストン４，４′よつ
てクランプ部材８，８′を作動する具体的構成は、
かかる作動リンク９，９′の他、カム機構等を利
用した構成でも良い。また符号１０，１０′は前
記クランプ部材８，８′の引込方向に附勢する戻
しばねであるが、クランプ部材８，８′を引込め
る方法は、かかる戻しばねの他、前記ピストン
４，４′を図に示す単動式でなく、複動式に流体
によつて作動させる構成としても良い。尚、図示
例に於いて中空基体２は、２分割した基体部分を
ボルト１１により接合して一体とする構成である
が、この他その製作方法は適宜である。例えば実
施例に於いて案内棒部３は、夫々の基体部分に突
設した部分を中間部に於いて接合するものである
が、仮想線に示すように一体構成のものを前記
夫々の基体部分にねじ込む等して接合しても良
い。 The symbols 1 and 1' indicate the target pipes, that is, the pipes to be joined, and 2 indicates the pipes 1 and 1'.
It is a hollow base that can be moved freely inside. The outer shape of the hollow base body 2 may be spherical as described later, or may be elliptical or spherical.
Any shape that is movable within the pipes 1, 1' is suitable, such as a polyhedral shape or a cylindrical shape. A pressurizing chamber 5 in which a guide rod portion 3 is provided from one side to the other side in the direction of the central axis O within the hollow base body 2, and an annular body movably fitted to the guide rod portion 3 is used as a piston 4, 4'. . Pressurizing chamber 5' on the other side
communicates with the fluid introduction port 6' via a fluid communication section 7 formed within the guide rod section 3. Furthermore, a plurality of clamp members 8, 8' corresponding to the respective ends of the pipes 1, 1' to be welded are provided on the outer periphery of the intermediate portion of the hollow base body 2 so as to protrude and retract. 8' are configured to be actuated by said pistons 4, 4', respectively. Reference numerals 9 and 9' are operating links that connect the pistons 4 and 4' to the clamp members 8 and 8', and the specific structure for operating the clamp members 8 and 8' by the pistons 4 and 4' is as follows.
In addition to such operating links 9, 9', a configuration using a cam mechanism or the like may be used. Reference numerals 10 and 10' indicate return springs that bias the clamp members 8 and 8' in the retracting direction. ' may be configured to be operated by fluid in a double-acting manner instead of the single-acting type shown in the figure. In the illustrated example, the hollow base body 2 has a structure in which two halves of the base body are joined together by bolts 11, but other manufacturing methods may be used as appropriate. For example, in the embodiment, the guide rod part 3 is such that the protruding parts of the respective base parts are joined at the intermediate part, but as shown in the imaginary line, the guide rod part 3 is integrated with the parts of the respective base parts. It may also be joined by screwing into.
かかる構成に於いて本発明装置の操作方法並び
に動作を図示例に基づいて具体的に説明すると次
の通りである。 The operating method and operation of the apparatus of the present invention in such a configuration will be specifically explained based on illustrated examples as follows.
まず本発明は作動流体供給源１２から、接合す
べきパイプ１，１′、即ちパイプ１内を通して、
該パイプ１の接合端から引き出した流体供給ホー
ス１３，１３′の先端を中空基体２の一側に設け
た流体導入口６，６′に接続する。ここで作動流
体としては例えば窒素ガス、炭酸ガスや空気等の
気体や、水や油等の液体とするがかかる作動流体
の供給源１２の構成は、図示例の様に流体タンク
１４、ポンプ１５、バルブ１６，１７で構成する
等、適宜であり、また流体供給ホース１３，１
３′の先端と流体導入口６，６′の接続方法も適宜
である。 First, the present invention introduces the working fluid from the working fluid supply source 12 into the pipes 1 and 1' to be joined, that is, the pipe 1.
The tips of the fluid supply hoses 13, 13' pulled out from the joint end of the pipe 1 are connected to fluid inlets 6, 6' provided on one side of the hollow base 2. Here, the working fluid is, for example, a gas such as nitrogen gas, carbon dioxide gas, or air, or a liquid such as water or oil. , valves 16, 17, etc., as appropriate, and fluid supply hoses 13, 1.
The method of connecting the tip of 3' and the fluid introduction ports 6, 6' is also appropriate.
こうして中空基体２に流体供給ホース１３，１
３′を接続した後、該中空基体２の一側あるいは
他端のいずれかに対応するパイプ、図に於いてパ
イプ１の所定位置に中空基体２を支持し、そして
流体供給ホース１３から流体導入口６を経て加圧
室５内に作動流体を供給する。するとピストン４
が戻しばね１０を抗して図中右方に移動するの
で、作動リンク９を介してクランプ部材８が外方
に突出してパイプ１の内面に圧接し、こうして第
３図ａに示すように中空基体２が固定状態とな
る。しかる後他方のパイプ１′を該中空基体２の
他方側から所定位置にもたらし、そして流体供給
ホース１３′から流体導入口６′、流体連通部７を
経て加圧室５′内に作動流体を供給する。すると
今度はピストン４′が戻しばね１０′に抗して図中
左方に移動して、作動リンク９′を介してクラン
プ部材８′が外方に突出し、パイプ１′の内面に圧
接するので、第３図ｂに示すようにパイプ１′が
中空基体２によつて支持される。このようにして
接合すべきパイプ１，１′は中空基体２の一側並
びに他側に支持されて、それらの開先が所定位置
関係に保持され、かかる状態に於いて開先全周に
渡つての溶接を行なうことができる。尚、前述し
た操作に於いて、パイプ１，１′を所定位置関係
で前記中空基体２に対して固定するために適宜の
測定具を用いても良いが、例えば図示例のように
前記中空基体２の外周に、棒体１８を嵌合自在な
穴１９や、板体２０を嵌合自在な溝２１を設け、
これら棒体１８や板体１９を、パイプ１，１′間
の間隔並びに方向に対する治具とすることにより
容易に位置決めを行なうことができ、そしてかか
る棒体１８や板体１９はパイプ１，１′を所定位
置で固定後、取り外すことにより溶接の支障とは
ならない。 In this way, the fluid supply hoses 13, 1 are connected to the hollow base 2.
3', the hollow base 2 is supported at a predetermined position on the pipe corresponding to either one side or the other end of the hollow base 2, the pipe 1 in the figure, and fluid is introduced from the fluid supply hose 13. Working fluid is supplied into the pressurized chamber 5 through the port 6 . Then piston 4
moves to the right in the figure against the return spring 10, so the clamp member 8 protrudes outward via the actuating link 9 and comes into pressure contact with the inner surface of the pipe 1, thus opening the hollow as shown in FIG. 3a. The base body 2 is in a fixed state. Thereafter, the other pipe 1' is brought to a predetermined position from the other side of the hollow base 2, and the working fluid is supplied from the fluid supply hose 13' through the fluid inlet 6' and the fluid communication part 7 into the pressurizing chamber 5'. supply Then, the piston 4' moves to the left in the figure against the return spring 10', and the clamp member 8' projects outward via the operating link 9' and comes into pressure contact with the inner surface of the pipe 1'. , a pipe 1' is supported by a hollow base body 2, as shown in FIG. 3b. In this way, the pipes 1 and 1' to be joined are supported on one side and the other side of the hollow base 2, and their grooves are held in a predetermined positional relationship, and in this state, the grooves are spread over the entire circumference of the groove. It is possible to perform all types of welding. In the above-described operation, an appropriate measuring tool may be used to fix the pipes 1 and 1' to the hollow base 2 in a predetermined positional relationship. A hole 19 into which the rod 18 can be fitted and a groove 21 into which the plate 20 can be fitted are provided on the outer periphery of 2,
By using these rods 18 and plates 19 as jigs for the spacing and direction between the pipes 1 and 1', positioning can be easily performed. After fixing ' in place, it can be removed without interfering with welding.
本発明はこのように接合すべきパイプ１，１′
の開先の保持を、該パイプ２，２′の内側から行
なうものであるので開先全周に渡つて連続的に溶
接することができ、作業を容易に行なえると共に
溶接欠陥が生じ難くく、自動溶接機も容易に適用
することができる。尚、前述した通り、作動流体
は気体、液体いずれでも良いが、液体を使用した
場合にはピストン４，４′の移動を微妙に調整す
ることができると共に動作が確実で、前述したク
ランプ作業を容易に、確実に行なうことができ
る。 The present invention is directed to the pipes 1, 1' to be joined in this manner.
Since the groove is held from the inside of the pipe 2, 2', continuous welding can be performed over the entire circumference of the groove, making the work easier and less likely to cause welding defects. , automatic welding machine can also be easily applied. As mentioned above, the working fluid may be either gas or liquid, but when liquid is used, the movement of the pistons 4, 4' can be finely adjusted, the operation is reliable, and the above-mentioned clamping work can be performed easily. It can be done easily and reliably.
以上の如くして溶接が終了したら、例えばバル
ブ１７を開とすると、ピストン４，４′は戻しば
ね１０，１０′の附勢力により加圧室５，５′内の
流体を追い出しながら移動して、作動リンク９，
９′を介してクランプ部材８，８′を引つ込める。
従つて中空基体２はパイプ１，１′から外れてフ
リーとなるので、この状態に於いて牽引用ワイヤ
ー（図示せず）や流体供給ホース１３，１３′に
よつて、牽引して、中空基体２をパイプ１の端部
あるいは他の適当な開口部に移動して取り出すこ
とができる。この際、中空基体２を球状に構成す
れば直管部に於ける移動は勿論の事、エルボ等の
曲管部に於いても極めて円滑に移動させることが
でき、容易に取り出すことができる。従つてこの
ような実施態様では直管と直管との突合わせ溶接
個所よりも直管とエルボ等の曲管との突合わせ溶
接個所が圧倒的に多い中口径パイプ用の内側クラ
ンプ装置として最適である。 After welding is completed as described above, for example, when the valve 17 is opened, the pistons 4, 4' move while expelling the fluid in the pressurizing chambers 5, 5' by the urging force of the return springs 10, 10'. , actuation link 9,
The clamping members 8, 8' are retracted via 9'.
Therefore, the hollow base 2 is detached from the pipes 1, 1' and becomes free. In this state, the hollow base 2 is pulled by a towing wire (not shown) and the fluid supply hoses 13, 13'. 2 can be removed by moving it to the end of the pipe 1 or other suitable opening. At this time, if the hollow base body 2 is formed into a spherical shape, it can be moved not only in a straight pipe section but also extremely smoothly in a curved pipe section such as an elbow, and can be easily taken out. Therefore, in this embodiment, there are far more butt welds between straight pipes and curved pipes such as elbows than between straight pipes, making it ideal as an inner clamp device for medium-diameter pipes. It is.
本発明は以上の通り、接合すべきパイプを、中
空基体の中間部外周に設けた複数のクランプ部材
を突出させて内側から支持するので、開先全周に
渡つて連続的に溶接することができ、作業を容易
に行なえると共に溶接欠陥が生じ難くく、自動溶
接機も容易に適用し得るという大きな特徴があ
る。殊に本発明は、中空基体の一側と他側に構成
した加圧室への流体導入口を、該中空基体の一側
に設けて、夫々の流体導入口に接続した流体供給
ホースの両者を、一方側のパイプの開口端から引
き出してポンプ等の作動流体供給源に接続して作
業を行なうことができ、従つてかかる流体導入口
を夫々の加圧室に対応した側に設け、そして夫々
に接続した流体供給ホースを、両側のパイプの開
口端から引き出してポンプ等に接続して作業を行
なうものが有する問題点、即ち、ポンプが２組必
要となつたり、流体供給ホースが長くなつたり、
あるいは制御が困難になつたりというような問題
点を解決することができ、作業を容易に行なうこ
とができるという効果がある。更に、本発明は、
中空基体の一側の流体導入口と他端の加圧室と
は、該中空基体内の案内棒部内に構成した流体連
通部を介して作動流体を連通させる構成であり、
即ち、作動流体を連通させるための部材が中空基
体の外側に構成されないので、この部材が前述し
た作業の邪魔となつたり、また作業に際して損傷
したりすることを防止することができるという効
果がある。また、このように内部を流体連通部と
した案内棒部は、夫々の加圧室に対応するピスト
ンを案内するものであるため、ピストンが傾斜状
態でつかえることを効果的に防止することがで
き、確実で安定した動作が得られるという効果も
ある。 As described above, the present invention supports the pipes to be joined from the inside by protruding a plurality of clamp members provided on the outer periphery of the intermediate portion of the hollow base, so that continuous welding can be performed over the entire circumference of the groove. It has the major features of being easy to work with, less likely to cause welding defects, and easily applicable to automatic welding machines. In particular, the present invention provides fluid inlet ports to pressurized chambers configured on one side and the other side of a hollow base body, and fluid supply hoses connected to the respective fluid inlet ports. can be pulled out from the open end of the pipe on one side and connected to a working fluid supply source such as a pump to carry out the work. Therefore, such a fluid inlet is provided on the side corresponding to each pressurizing chamber, and There are problems with those that perform work by pulling out the fluid supply hoses connected to each side from the open ends of the pipes on both sides and connecting them to pumps, etc., such as the need for two sets of pumps and the need for long fluid supply hoses. Or,
Alternatively, problems such as difficulty in control can be solved, and the work can be carried out easily. Furthermore, the present invention
The fluid inlet on one side of the hollow base and the pressurizing chamber on the other end are configured to communicate a working fluid through a fluid communication portion configured in a guide rod within the hollow base,
That is, since the member for communicating the working fluid is not formed outside the hollow base, it is possible to prevent this member from interfering with the above-mentioned work or being damaged during the work. . In addition, since the guide rod part with the fluid communication part inside guides the pistons corresponding to the respective pressurizing chambers, it is possible to effectively prevent the pistons from getting stuck in an inclined state. This also has the effect of providing reliable and stable operation.
第１図ａ，ｂは従来例説明図、第２図ａ，ｂ，
ｃは夫々本発明の要部の平面説明図、Ｘ−Ｘ線説
明的断面図、Ｙ−Ｙ線説明的断面図、第３図ａ，
ｂ，ｃは本発明の動作説明図、第４図ａ，ｂは位
置決め機構の一例図である。
符号１，１′……パイプ、２……中空基体、３
……案内棒部、４，４′……ピストン、５，５′…
…加圧室、６，６′……流体導入口、７……流体
連通部、８，８′……クランプ部材、９，９′……
作動リンク、１０，１０′……戻しばね、１１…
…ボルト、１２……作動流体供給源、１３，１
３′……流体供給ホース、１４……流体タンク、
１５……ポンプ、１６，１７……バルブ、１８…
…棒体、１９……穴、２０……板体、２１……
溝。
Fig. 1 a, b is an explanatory diagram of a conventional example, Fig. 2 a, b,
c is an explanatory plan view of the main part of the present invention, an explanatory cross-sectional view along the X-X line, an explanatory cross-sectional view along the Y-Y line, and FIG. 3a,
4b and 4c are explanatory views of the operation of the present invention, and FIGS. 4a and 4b are views of an example of the positioning mechanism. Symbols 1, 1'...Pipe, 2...Hollow base, 3
...Guide rod part, 4,4'...Piston, 5,5'...
...pressure chamber, 6, 6'... fluid inlet, 7... fluid communication section, 8, 8'... clamp member, 9, 9'...
Operating link, 10, 10'...Return spring, 11...
...Volt, 12...Working fluid supply source, 13,1
3'...Fluid supply hose, 14...Fluid tank,
15...pump, 16,17...valve, 18...
...rod body, 19...hole, 20...plate body, 21...
groove.
Claims (1)
の中心軸方向に一側から他側に案内棒部を設け、
該案内棒部に移動自在に嵌めた環状体をピストン
とする加圧室を、前記中空基体内の一側と他側に
設けると共に、夫々の加圧室に対応する流体導入
口を前記中空基体の一側に設け、前記他側の加圧
室は前記案内棒部内に構成した流体連通部を介し
て前記流体導入口と連通させ、前記中空基体の中
間部外周には、溶接すべきパイプの夫々の端部に
対応した複数のクランプ部材を突出、引込自在に
設け、該クランプ部材を前記ピストンによつて作
動するように構成したことを特徴とするパイプ内
側クランプ装置。 ２ 中空基体は球状に構成したことを特徴とする
特許請求の範囲第１項記載のパイプ内側クランプ
装置。[Claims] 1. A guide rod section is provided from one side to the other side in the direction of the central axis within a hollow base body that is movable within the target pipe,
Pressurizing chambers each having a piston, which is an annular body movably fitted in the guide rod portion, are provided on one side and the other side of the hollow base, and fluid inlets corresponding to the respective pressurizing chambers are provided in the hollow base. The pressurizing chamber on the other side communicates with the fluid inlet through a fluid communication part configured in the guide rod part, and a pipe to be welded is provided on the outer periphery of the intermediate part of the hollow base body. 1. A pipe inner clamp device, characterized in that a plurality of clamp members corresponding to each end are protruded and retractable, and the clamp members are configured to be operated by the piston. 2. The pipe inner clamping device according to claim 1, wherein the hollow base body has a spherical shape.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6478384A JPS60210391A (en) | 1984-03-31 | 1984-03-31 | Clamping device for inside of middle diameter pipe |
| AU39661/85A AU580986B2 (en) | 1984-03-31 | 1985-03-08 | A device for internally clamping pipes |
| GB08506728A GB2156468B (en) | 1984-03-31 | 1985-03-15 | Internally clamping pipes |
| DE19853510251 DE3510251A1 (en) | 1984-03-31 | 1985-03-21 | DEVICE FOR INSIDE TENSIONING TUBES |
| CA000477919A CA1269825A (en) | 1984-03-31 | 1985-03-29 | Device for internally clamping pipes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6478384A JPS60210391A (en) | 1984-03-31 | 1984-03-31 | Clamping device for inside of middle diameter pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60210391A JPS60210391A (en) | 1985-10-22 |
| JPS6333955B2 true JPS6333955B2 (en) | 1988-07-07 |
Family
ID=13268160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6478384A Granted JPS60210391A (en) | 1984-03-31 | 1984-03-31 | Clamping device for inside of middle diameter pipe |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS60210391A (en) |
| AU (1) | AU580986B2 (en) |
| CA (1) | CA1269825A (en) |
| DE (1) | DE3510251A1 (en) |
| GB (1) | GB2156468B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04325280A (en) * | 1991-04-24 | 1992-11-13 | Sharp Corp | Thermal transfer ink sheet and video printer |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8710778D0 (en) * | 1987-05-07 | 1987-06-10 | Houlder Offshore Ltd | Joining pipes together |
| GB0003145D0 (en) * | 2000-02-12 | 2000-04-05 | Pro Tek Engineering Limited | Back-up clamp |
| CA2343285C (en) | 2001-04-05 | 2004-06-15 | Proline Pipe Equipment Inc. | Actuation system for an internal backup ring assembly |
| US7810696B2 (en) | 2008-08-27 | 2010-10-12 | E.I. Du Pont De Nemours And Company | Internal pipe clamp alignment guides with purge backup |
| KR101410952B1 (en) * | 2012-11-16 | 2014-06-27 | (주)지이씨 | Pipe line up apparatus with clamp guide and method of pipe line up using thereof |
| CN106826293A (en) * | 2017-03-23 | 2017-06-13 | 无锡市明骥智能机械有限公司 | Novel pipe fitting fixture |
| CN110842820A (en) * | 2019-11-27 | 2020-02-28 | 北京海普瑞森超精密技术有限公司 | Thin-walled tube internal support structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS519037A (en) * | 1974-07-13 | 1976-01-24 | Nippon Kokan Kk | Uraateganetsukikanshindashikenkyoseisochi |
| JPS5197552A (en) * | 1975-01-21 | 1976-08-27 | ||
| JPS5246901U (en) * | 1975-09-30 | 1977-04-02 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1319238A (en) * | 1969-09-22 | 1973-06-06 | Long Co Ltd A | Internal line-up clamps for pipelines |
| GB1435004A (en) * | 1973-05-24 | 1976-05-12 | Columbia Gas Syst | Pipe clamp means |
| IT1034673B (en) * | 1975-03-28 | 1979-10-10 | Saipem Spa | TUBE COUPLER TO BE HEAD WELDED |
| FR2505699A1 (en) * | 1981-05-13 | 1982-11-19 | Petroles Cie Francaise | INTERNAL CHUCK USED IN A BUTTON-TO-BUTTON JOINING OPERATION OF TWO TRUNKS OF TUBES BY WELDING |
| US4418860A (en) * | 1981-06-29 | 1983-12-06 | Carl Stringer | Clamping method and apparatus for solid phase welding |
| FR2571997A1 (en) * | 1984-10-22 | 1986-04-25 | Alsthom Atlantique | INTERNAL CHUCK FOR BUTT-TO-END JOINING OPERATION OF TWO TUBE SECTION BY WELDING |
-
1984
- 1984-03-31 JP JP6478384A patent/JPS60210391A/en active Granted
-
1985
- 1985-03-08 AU AU39661/85A patent/AU580986B2/en not_active Ceased
- 1985-03-15 GB GB08506728A patent/GB2156468B/en not_active Expired
- 1985-03-21 DE DE19853510251 patent/DE3510251A1/en not_active Withdrawn
- 1985-03-29 CA CA000477919A patent/CA1269825A/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS519037A (en) * | 1974-07-13 | 1976-01-24 | Nippon Kokan Kk | Uraateganetsukikanshindashikenkyoseisochi |
| JPS5197552A (en) * | 1975-01-21 | 1976-08-27 | ||
| JPS5246901U (en) * | 1975-09-30 | 1977-04-02 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04325280A (en) * | 1991-04-24 | 1992-11-13 | Sharp Corp | Thermal transfer ink sheet and video printer |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8506728D0 (en) | 1985-04-17 |
| CA1269825A (en) | 1990-06-05 |
| AU3966185A (en) | 1985-10-03 |
| GB2156468A (en) | 1985-10-09 |
| DE3510251A1 (en) | 1985-10-10 |
| GB2156468B (en) | 1988-04-20 |
| AU580986B2 (en) | 1989-02-09 |
| JPS60210391A (en) | 1985-10-22 |
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