JPS6178596A - Clamping device - Google Patents

Clamping device

Info

Publication number
JPS6178596A
JPS6178596A JP20132584A JP20132584A JPS6178596A JP S6178596 A JPS6178596 A JP S6178596A JP 20132584 A JP20132584 A JP 20132584A JP 20132584 A JP20132584 A JP 20132584A JP S6178596 A JPS6178596 A JP S6178596A
Authority
JP
Japan
Prior art keywords
clamp
pipe
track
welding
welding torch
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
Application number
JP20132584A
Other languages
Japanese (ja)
Inventor
Hirokazu Shimanishi
弘和 嶋西
Tatsuya Kasatani
笠谷 龍也
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumikin Kokan Koji KK
Original Assignee
Sumikin Kokan Koji KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sumikin Kokan Koji KK filed Critical Sumikin Kokan Koji KK
Priority to JP20132584A priority Critical patent/JPS6178596A/en
Publication of JPS6178596A publication Critical patent/JPS6178596A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/04Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
    • B23K37/053Auxiliary 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
    • B23K37/0533Auxiliary 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 external pipe alignment clamps

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)

Abstract

PURPOSE:To bring two metallic pipe materials to a butt welding with an excellent work efficiency by fitting and connecting a clamp so as to be rotatable to both the pipe materials, when bringing the two metallic pipe materials to a butt welding, and using an intermediate clamp which can be interlocked with a welding torch. CONSTITUTION:When bringing the end parts of a metallic pipe materials 1 and 5 to a butt welding, the first clamp 10 and the second clamp 20 of a cylindrical shape are fitted to the outside of a pipe to be welded. The first track 11, and the second track 21 for guiding a welding torch 2i which rotates and moves the provided on the butt side of the first clamp 10, and the opposite side, respectively. An annular body 31 adjacent to the first track 11 and the second track 21 are connected by plural connecting plates 33, and an intermediate clamp 30 which is crossed and provided on both the clamps 10, 20 and centers both the pipe materials 1, 5 is formed. The annular body 31 is rolled on the first track 11, an annular body 32 provided with wheels 34-35a rolling on the second track 21 is rotated, and the end parts of both the pipe materials 1, 5 are brought to a butt welding automatically by the welding torch 21.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は管端突き合せ部回りに溶接機の溶接トーチを周
回移動させることにより、該管端突き合せ部を自動溶接
する設備に供するクランプ装置に関し、更に詳述すれば
管端突き合せ部を外側より同心状態で固定し、しかも管
端突き合せ部の連続溶接に支障を来たさず、この結果能
率のよい自動溶接が行え、更に、溶接作業前に手動又は
センサを用いたティーチング作業が可能なりランプ装置
を提案するものである。
[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a clamp for use in equipment that automatically welds a butt-end portion of a tube by moving a welding torch of a welding machine around the butt-end portion. Regarding the device, to be more specific, it fixes the pipe end abutting parts in a concentric state from the outside, and does not interfere with continuous welding of the pipe end abutting parts, and as a result, efficient automatic welding can be performed. The present invention proposes a lamp device that enables manual or sensor-based teaching work before welding work.

〔従来技術〕[Prior art]

近年、エネルギ資源の効率的輸送手段として、パイプラ
インの建設が各地で進められている。斯かるパイプライ
ンの建設においては、開先加工を施した管端を相互に突
き合せ、その突き合せ部を溶接することが必要である。
In recent years, construction of pipelines has been progressing in various places as an efficient means of transporting energy resources. In the construction of such pipelines, it is necessary to butt the beveled pipe ends together and weld the butted portions.

そして、近年このような突き合せ部を能率よく溶接する
設備として、溶接トーチを突き合せ部回りに周回移動さ
せて溶接を行なう自動溶接設備が多用される傾向にある
In recent years, automatic welding equipment that performs welding by moving a welding torch around the butt portions has been increasingly used as equipment for efficiently welding such butt portions.

そして、このような自動溶接設備による溶接は、従来第
8図に示すようにコの字状の“馬”41を溶接対象の両
管101,105の管端突き合せ部に跨らせて、芯出し
しつつ溶着することにより管101.105同士を連結
し、この状態にて突き合せ部を仮溶接した後に、“馬”
41を取外し、その後溶接トーチ(図示せず)を突き合
せ部回りに周回移動させることにより行われていた。
Welding using such automatic welding equipment is conventionally carried out by placing a U-shaped "horse" 41 astride the abutting portions of the pipe ends of the two pipes 101 and 105 to be welded, as shown in FIG. The pipes 101 and 105 are connected by welding while centering them, and after temporarily welding the butt parts in this state, the "horse"
41 and then moving a welding torch (not shown) around the abutting portion.

また、第9図に示すように窓付きの帯状クランプ42を
突き合せ部回りに巻回し、端部をボルト締めすることに
より管101.105同士を連結し、この状態にてクラ
ンプ42の窓43から露出している突き合せ部を仮溶接
し、次いで、帯状クランプ42を周回移動させることに
より突き合せ部を全周に亘って仮溶接した後、上述した
如く溶接トーチを周回移動させることにより溶接を行な
う方法もあった。
Further, as shown in FIG. 9, the tubes 101 and 105 are connected to each other by winding the band-shaped clamp 42 with a window around the abutting portion and tightening the ends with bolts. The exposed butt part is temporarily welded, and then the butt part is temporarily welded over the entire circumference by moving the band-shaped clamp 42 around, and then welding is performed by moving the welding torch around as described above. There was also a way to do it.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

しかしながら、上述の如き“馬”又は帯状クランプを用
いて管同士を一旦連結し、仮溶接後これらを取外し、そ
の後溶接する場合にはこれら一連の作業に多大の時間を
要する結果、能率のよい自動溶接が行なえないという難
点があった。また、“馬°はそれ自体管同士の芯出し機
構を備えておらず、この結果“馬”を取付ける場合には
他の手段にて管同士を同心状態にて保持する必要がある
という煩わしさもあった。更に“馬″又は仮溶接による
連結を行なった場合は、開先線のティーチング作業が殆
ど不可能であるため、溶接作業の完全自動化を図ること
ができなかった。
However, when pipes are once connected using the above-mentioned "horse" or belt-shaped clamps, removed after temporary welding, and then welded, this series of operations requires a large amount of time. The problem was that welding could not be done. Additionally, the ``Horse'' itself does not have a mechanism for centering the tubes together, and as a result, when installing the ``Horses'', it is cumbersome that the tubes must be held concentrically with each other by other means. Furthermore, when connections are made by "horse" or temporary welding, it is almost impossible to teach the groove line, so it is not possible to fully automate the welding work.

〔問題点を解決するための手段〕[Means for solving problems]

本発明は斯かる事情に鑑みてなされたものであり、一方
の管に芯出し可能に外嵌する筒状の第1クランプと、同
様に他方の管に芯出し可能に外嵌する筒状の第2クラン
プと、両管の突き合せ部間りにおいて、前記第1.第2
クランプに回転可能に外嵌され、両クランプを連結し、
溶接トーチと連動可能にしである中間クランプとで構成
され、管突き合せ部を同心状態で外側より固定し得、し
かもこの部分の連続溶接に支障を来たさず、この結果能
率の良い自動溶接が行えるクランプ装置を提供すること
を目的とする。
The present invention has been made in view of such circumstances, and includes a cylindrical first clamp that fits externally on one pipe so that it can be centered, and a cylindrical first clamp that similarly fits externally on the other pipe so that it can be centered. Between the second clamp and the abutting portion of both tubes, the first. Second
It is rotatably fitted onto the clamp and connects both clamps.
Consisting of a welding torch and an intermediate clamp that can be interlocked, it is possible to fix the pipe butt part from the outside in a concentric state, and it does not interfere with continuous welding of this part, resulting in highly efficient automatic welding. The purpose of the present invention is to provide a clamping device that can perform the following operations.

本発明に係るクランプ装置は、2本の管を相互に突き合
せた部分を外側より固定するクランプ装置であって、筒
状をなし、その周面における管の突き合せ部側に第1の
軌道を、反対側に前記突き合せ部に沿い周回移動する溶
接トーチを案内する第2の軌道を備え、一方の管に対し
て着脱可能に、また、芯出し可能に外嵌固定すべき第1
クランプと、筒状をなし、その周面に軌道を備え、他方
の管に対して着脱可能に、また、芯出し可能に外嵌固定
すべき第2クランプと、第1の軌道に転接する車輪を備
えた環体、第2クランプの軌道に転接する車輪を備えた
環体及びこれらの環体をその周方向の複数の位置にて各
連結する複数の連結板からなり、第1.第2クランプに
着脱可能に跨設されて、これらを芯出しした状態に連結
し、前記溶接トーチに連動して周回移動可能になしてあ
る中間クランプとを具備することを特徴とする。
The clamping device according to the present invention is a clamping device that fixes a portion where two pipes abut each other from the outside, and has a cylindrical shape, and has a first track on the side of the abutting portion of the tubes on the circumferential surface thereof. and a second track on the opposite side for guiding a welding torch that moves around along the abutment part, and a first track to be fitted and fixed to one pipe removably and centeringly.
A clamp, a second clamp which has a cylindrical shape and has a raceway on its circumferential surface and is to be fitted and fixed to the other pipe removably and centeringly, and a wheel that rolls into contact with the first raceway. , a ring body equipped with a wheel that rolls into contact with the track of the second clamp, and a plurality of connecting plates that connect these ring bodies at a plurality of positions in the circumferential direction. The present invention is characterized by comprising an intermediate clamp that is detachably installed over the second clamp, connects the second clamp in a centered manner, and is movable around the welding torch in conjunction with the welding torch.

〔実施例〕〔Example〕

以下本発明をその実施例を示す図面に基づいて詳述する
。第1図は本発明に係るクランプ装置を用いて管突き合
せ部を固定して、この部分を自動溶接機にて溶接する状
態を示す一部破断斜視図、第2図はその上側半分を示す
側断面図、第7図は中間クランプ30の斜視図である。
DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below based on drawings showing embodiments thereof. Fig. 1 is a partially cutaway perspective view showing a state in which a pipe abutting part is fixed using the clamp device according to the present invention and this part is welded with an automatic welding machine, and Fig. 2 shows the upper half thereof. The side sectional view, FIG. 7, is a perspective view of the intermediate clamp 30.

管端部同士を相互に突き合せ溶接して延設した既溶接管
1の未溶接側端面には同径の未溶接管5を同心状に整合
して突き合せである。既溶接管l及び未溶接管5夫々の
突き合せ部には開先加工をJi!シである。既溶接管1
の突き合せ部寄りの位置には長寸円筒状の第1クランプ
10を同心状に外嵌固定しである。第1クランプ10の
突き合せ部側の端部の形状は断面視外周側に頂点を有す
る二等辺三角形状の第1す【道11となっている。第1
クランプ10の突き合せ部と反対側の外周には円筒状の
案内筒部13を同心状に外嵌しである。案内筒部13は
既溶接管1回りを周回移動する溶接トーチ取付台支持部
2dの周回移動を案内するためのものである。
An unwelded pipe 5 of the same diameter is aligned concentrically with the unwelded side end face of the already welded pipe 1 which is extended by butt welding the pipe ends. Beveling is performed on the butt portions of the welded pipe 1 and the unwelded pipe 5. It is shi. Already welded pipe 1
A long cylindrical first clamp 10 is externally fitted and fixed concentrically at a position near the abutting portion. The shape of the end of the first clamp 10 on the abutting portion side is a first path 11 in the form of an isosceles triangle having an apex on the outer peripheral side in cross-sectional view. 1st
A cylindrical guide tube portion 13 is fitted concentrically onto the outer periphery of the clamp 10 on the opposite side from the abutting portion. The guide cylinder part 13 is for guiding the circular movement of the welding torch mount support part 2d that circulates around the welded pipe.

案内筒部13の外周端部の軸長寸法は山部よりも長くな
っており、その両軸端面の内、外周は全長に亘って夫々
面取してロール転接面13a、 13a、 13a、 
13aとしである。また、案内筒部13の外周面の中央
には環状のラック14を嵌着しである。
The axial length of the outer peripheral end of the guide cylinder part 13 is longer than the peak part, and the inner and outer peripheries of both shaft end faces are chamfered over the entire length to form roll contact surfaces 13a, 13a, 13a,
This is 13a. Further, an annular rack 14 is fitted into the center of the outer circumferential surface of the guide tube portion 13.

溶接トーチ取付台支持部2dの既溶接管1(allには
第2図に示すようにその軸長方向に適長M隔させて1対
のロール支承脚2g、2gを設けである。該支承脚2g
、2gには夫々上下1対のロール2h、2h、2h、2
hを、該ロール2h 、 2h 、 2h 、 2hが
夫々前述のロール転接面13a、 13a、 13a、
 13a上を転接し得るように回転自在に取付けである
。これにより支持部2dは既溶接管1の軸長方向及び径
方向へのガタつきなしに周回移動できる。そして、支持
部2dの周回移動はこれに連結された駆動部2fに装備
したビニオン2aを図示しない電動機にて駆動し、前述
のラック14上を転勤させることにより行われる。
The welded pipe 1 (all) of the welding torch mount support part 2d is provided with a pair of roll support legs 2g, 2g spaced apart by an appropriate length M in the axial direction as shown in FIG. leg 2g
, 2g has a pair of upper and lower rolls 2h, 2h, 2h, 2, respectively.
h, and the rolls 2h, 2h, 2h, 2h are respectively the aforementioned roll contact surfaces 13a, 13a, 13a,
It is rotatably attached so that it can be rotated on 13a. As a result, the support portion 2d can move around the welded pipe 1 without wobbling in the axial and radial directions. The support part 2d is moved around the support part 2d by driving the pinion 2a attached to the driving part 2f connected thereto by an electric motor (not shown), and moving the pinion 2a over the rack 14 described above.

溶接トーチ支持部2dの前記既溶接管1と未溶接管5と
の突き合せ部側には溶接トーチ取付台2cを軸支しであ
る。取付台2cの突き合せ部側端部には筒状をなす溶接
トーチ21の先端を突き合せ部に臨ませるようにして取
付けである。f6接トー千21は駆動部2fの駆動によ
り支持部2d、取付台2cと共に周回移動し、突き合せ
部を全周に亘って溶接する。
A welding torch mounting base 2c is pivotally supported on the side of the welding torch support portion 2d where the welded pipe 1 and the unwelded pipe 5 meet. A cylindrical welding torch 21 is attached to the end of the mounting base 2c on the side of the abutting part so that the tip thereof faces the abutting part. The f6 contact toe 21 moves around together with the support part 2d and the mounting base 2c by driving the drive part 2f, and welds the abutting part over the entire circumference.

未溶接管5の突き合せ部寄りの位置には短寸円筒状の第
2クランプ20を同心状に外嵌固定しである0g42ク
ランプ20の軸長寸法は第1クランプ10のそれの略1
/6になっている。
A short cylindrical second clamp 20 is externally fitted and fixed concentrically to a position near the abutting portion of the unwelded pipe 5. The axial length of the 0g42 clamp 20 is approximately 1 that of the first clamp 10.
/6.

未溶接管5の突き合せ部と反対側の端部には既溶接管1
の軌道11と同様の軌道21を形成しである。
The welded pipe 1 is placed at the end opposite to the butt part of the unwelded pipe 5.
A trajectory 21 similar to the trajectory 11 is formed.

突き合せ部には第7図に示すように環体31,32の外
周面の4等配の対向位置間に4枚の連結板33゜33・
・・を亘して、全体として底なしの円箇籠状をなす中間
クランプ30を遊嵌させである。前述の溶接トーチ21
の先端部は連結板33.33間位置において管突き合せ
部に臨ませである。環体31,32は夫々前記軌道11
.21の外側に位置している0両環体31゜32の外周
面の3等配の対向位置には夫々軸支持部材34,34.
34及び35,35.35を取付けである。軸支持部材
34.35には夫々車軸34a、35aを固着し、これ
らの対向側端部には鼓状をなす車軸34b、35bを、
該車軸34b、35bが夫々前記軌道11.21上を転
接し得るようにして回転自在に取付けである。車軸34
aの反対側端部は軸支持部材34から少し突出しており
、この突出部にはボールベアリング34cの内輪を嵌着
しである。ボールベアリング34cは第1クランプ10
のボールへアリフグ34c嵌着位置に対応する外周面に
形成した、前述の軌道11と略同径のヘアリング転動面
12上を転勤するようになっている。
At the abutting portion, as shown in FIG. 7, four connecting plates 33, 33,
An intermediate clamp 30, which has a bottomless circular cage shape as a whole, is loosely fitted across. The aforementioned welding torch 21
The tip of the tube faces the tube abutting portion at a position between the connecting plates 33 and 33. The ring bodies 31 and 32 are connected to the orbit 11, respectively.
.. Shaft support members 34, 34.
34 and 35, 35.35 is the installation. Axles 34a and 35a are fixed to the shaft support members 34 and 35, respectively, and drum-shaped axles 34b and 35b are attached to opposite ends of these members.
The axles 34b, 35b are rotatably mounted so that they can roll on the tracks 11, 21, respectively. Axle 34
The opposite end of the shaft a slightly protrudes from the shaft support member 34, and the inner ring of the ball bearing 34c is fitted into this protrusion. The ball bearing 34c is connected to the first clamp 10
The dovetail puffer 34c is adapted to roll on a hair ring rolling surface 12 formed on the outer circumferential surface corresponding to the fitting position of the dovetail puffer 34c to the ball and having approximately the same diameter as the aforementioned track 11.

既溶接管1側に位置する環体31は未溶接管5側に位置
する環体32よりも広幅になっており、その外周面の適
当な位置には連結棒支持金具36を取付けである。支持
金具36には連結棒37を前述の駆動部2f側に突出す
るようにして挿通しである。連結棒37は中間クランプ
30と駆動部2fとを連動可能になすものであり、その
駆動部2f側端部は該駆動部2fの対向側面に、連結棒
37、換言すれば中間クランプ30を既溶接管1の周方
向に拘束して一体連動できるようにして取付けた、コの
字状の連結金臭2bの開口部間に係入しである。
The ring body 31 located on the welded pipe 1 side is wider than the ring body 32 located on the unwelded pipe 5 side, and a connecting rod support fitting 36 is attached to an appropriate position on its outer peripheral surface. A connecting rod 37 is inserted through the support fitting 36 so as to protrude toward the aforementioned driving section 2f. The connecting rod 37 enables the intermediate clamp 30 and the driving part 2f to be interlocked, and the end of the connecting rod 37 on the driving part 2f side is connected to the connecting rod 37, in other words, the intermediate clamp 30, on the opposite side of the driving part 2f. It is inserted between the openings of the U-shaped coupling metal 2b, which is attached so that it can be integrally interlocked with the welded pipe 1 by being restrained in the circumferential direction.

このような構成において、溶接機2の駆動部2fに備え
たビニオン2aを駆動させると、溶接トーチ21は駆動
部2F、支持部2d、取付台2cと共に周回移動し、管
突き合せ部を全周に亘って溶接することができる。
In such a configuration, when the pinion 2a provided in the drive part 2f of the welding machine 2 is driven, the welding torch 21 moves around together with the drive part 2F, the support part 2d, and the mounting base 2c, and covers the entire circumference of the pipe butting part. Can be welded over

而して、この場合に中間クランプ30は連結棒37によ
り駆動部2fに連結されているので、これと連れ回りし
、従って、連結板33.33・・・が溶接トーチ21の
周回移動の妨げにならず、その全周を連続的に溶接する
ことができる。
In this case, since the intermediate clamp 30 is connected to the driving part 2f by the connecting rod 37, it rotates together with the intermediate clamp 30, so that the connecting plates 33, 33, etc. prevent the welding torch 21 from rotating. It is possible to weld continuously around the entire circumference.

次に本発明装置の第1クランプ10.第2クランプ20
及び中間クランプ30について夫々詳しく説明する。第
3図は第1クランプ10を第2図の■方向から視た側面
図、第4図は第1クランプ10を第3図のIV−IV線
で切断した断面図である。
Next, the first clamp 10 of the device of the present invention. Second clamp 20
and intermediate clamp 30 will be explained in detail. FIG. 3 is a side view of the first clamp 10 viewed from the direction {circle around (2)} in FIG. 2, and FIG. 4 is a sectional view of the first clamp 10 taken along the line IV--IV in FIG. 3.

第1クランプ10の長寸円筒状をなすクランプ本体15
は1対の長寸の半円筒部材16a、16bを、夫々の周
方向端面を相互に突き合せて連結したものであり、その
連結構造は以下の通りである。一方の半円筒部材16b
の軌道11形成側端部寄りの軸長方向位置における両局
方向端置去々の肉厚方向中央部には、ボルト穴16e、
16eを一方の端面につき2個、この端面に垂直に穿設
してあり、該ボルト穴16e、 16eに対向するよう
に他方の半円筒部材16aの周方向端面近傍の外周面に
半径と直交する方向に延設した開口部楕円状(穴は円形
であるが、半円筒部材16aの外周面に開口するので楕
円状になる)のボルト挿入穴16c、 16cからボル
ト16d、16dを螺入させる。なお、このようなポル
ト蝮入位置は、第4図に示すように軌道11に隣接する
部分及びベアリング転勤面12の軌道11の反対側に隣
接する部分となっており、合計4本のボルトを用いる。
Clamp body 15 having a long cylindrical shape of the first clamp 10
A pair of long semi-cylindrical members 16a and 16b are connected with their circumferential end surfaces facing each other, and the connection structure is as follows. One semi-cylindrical member 16b
Bolt holes 16e,
Two bolt holes 16e are perpendicularly perpendicular to this end surface, and are perpendicular to the radius on the outer circumferential surface near the circumferential end surface of the other semi-cylindrical member 16a so as to face the bolt holes 16e, 16e. The bolts 16d, 16d are screwed into the bolt insertion holes 16c, 16c, which have elliptical openings (the holes are circular, but are elliptical because they open on the outer peripheral surface of the semi-cylindrical member 16a). In addition, as shown in FIG. 4, such port bolt insertion positions are the part adjacent to the raceway 11 and the part adjacent to the opposite side of the raceway 11 of the bearing transfer surface 12, and a total of four bolts are inserted. use

クランプ本体15の軌道11形成位置と反対側端部外周
はこれよりも小径になっており、この小径部の端部には
前述した案内筒部13を外嵌してあり、また該案内筒部
13の外周の中央にはラック14を嵌着しである。案内
筒部13はクランプ本体15と同様の構造で2つの半円
筒部材を連結したものであり、クランプ本体15に対す
る組付は夫々の半円筒部材をクランプ本体15に嵌合し
た後に、両者をボルト連結することにより行われる。
The outer periphery of the end of the clamp body 15 opposite to the position where the raceway 11 is formed has a smaller diameter than this, and the aforementioned guide cylinder part 13 is fitted onto the end of this small diameter part, and the guide cylinder part A rack 14 is fitted in the center of the outer periphery of the rack 13. The guide cylinder part 13 has the same structure as the clamp main body 15 and is made by connecting two semi-cylindrical members, and is assembled to the clamp main body 15 by fitting each semi-cylindrical member to the clamp main body 15 and then bolting them together. This is done by concatenating.

軸長方向位置が軌道ll側のポル日6d、16d取付位
置に対応するクランプ本体15には90゛間隔にてボル
ト孔17b、 17b、17b、 17bを形成してあ
り、該ポル孔17b、 17b、 17b、 17bに
は夫々外周側よりボルト17、17.17.17を螺入
貫通させである。なお、ボルト17.17・・・と両半
円箇部材16a、 16bの周方向端面との位置関係は
、gIJ3図に示すように両局方向端面から45゛ずつ
偏位した位置がボルト17.17・・・取付位置となる
ようにしである。ポルH7の先端にはクランプ本体15
の軸長方向に長い矩形板状のクランプ金具17aを連結
しである。クランプ金具17aの内側面にはクランプ本
体15内に遊挿される既溶接管1の外周面の曲率と同一
の曲率をクランプ本体15の周方向に有する曲面を形成
しである。クランプ金具17aはクランプ本体15の内
周側に前記ボルト孔17bに連ねて開口した穴18内に
クランプ本体15の径方向への移動可能に嵌挿してあり
、ポルH7のクランプ本体15に対する螺入量を調節す
ることにより既溶接管lに対して接離移動できるように
なっている。
Bolt holes 17b, 17b, 17b, 17b are formed at 90° intervals in the clamp body 15 whose axial positions correspond to the mounting positions 6d, 16d on the track 1 side. , 17b, 17b are screwed with bolts 17, 17, 17, 17 from the outer peripheral side, respectively. The positional relationship between the bolts 17, 17... and the circumferential end surfaces of both semicircular members 16a, 16b is such that the bolts 17. 17... Attachment position. Clamp body 15 is attached to the tip of Pol H7.
A rectangular plate-shaped clamp fitting 17a which is long in the axial direction is connected. The inner surface of the clamp fitting 17a is formed with a curved surface having the same curvature in the circumferential direction of the clamp body 15 as the curvature of the outer circumferential surface of the welded pipe 1 loosely inserted into the clamp body 15. The clamp fitting 17a is fitted into a hole 18 that is opened on the inner peripheral side of the clamp body 15 and is connected to the bolt hole 17b so as to be movable in the radial direction of the clamp body 15. By adjusting the amount, it is possible to move toward and away from the welded pipe l.

このような構成の第1クランプ10において、4本のポ
ル目7,17・・・夫々の螺入量を調整して、4個のク
ランプ金具17a、 17a、 17a、 17aを既
溶接管1に対して等量移動させて既溶接管1の外周面に
当接せしめる場合は、既溶接管1は第1クランプ10に
より同心状態、即ち芯出し状態で支持されることになる
。また、第1クランプ10は案内筒部13を取外し、ま
た、ボルト16d、 16d・・・を取外すことにより
2分割できるので、既溶接管1に対する着脱が容易に行
える。
In the first clamp 10 having such a configuration, the four clamp fittings 17a, 17a, 17a, 17a are attached to the welded pipe 1 by adjusting the screwing amount of each of the four holes 7, 17... On the other hand, when the welded pipe 1 is moved by the same amount and brought into contact with the outer peripheral surface of the welded pipe 1, the welded pipe 1 is supported by the first clamp 10 in a concentric state, that is, in a centered state. Further, the first clamp 10 can be divided into two parts by removing the guide tube part 13 and the bolts 16d, 16d, . . . , so that it can be easily attached to and detached from the welded pipe 1.

次に第2クランプ20について説明する。第5図は第2
クランプ20を第2図の■方向から視た側面図、第6図
は第5図を■方向から視た一部破砕拡大矢視図である。
Next, the second clamp 20 will be explained. Figure 5 is the second
FIG. 6 is a side view of the clamp 20 viewed from the direction ■ in FIG. 2, and FIG. 6 is a partially fragmented enlarged view of FIG. 5 viewed from the direction ■.

第2クランプ20の短寸円筒状をなすクランプ本体25
は1対の半円筒部材26a、26bを、夫々の周方向端
面を相互に突き合せて連結したものであり、その連結構
造は以下の通りである。一方半円筒部材26bの両局方
向端面の軌道21形成位置の反対側に少し寄った位置に
は、ボルト穴26h、 26hをこの端面に垂直に穿設
してあり、該ボルト穴26h 、 26hに対向するよ
うに、他方の半円筒部材26aの周方向端面近傍の外周
面に半径と直交する方向に延設した楕円状のボルト挿入
穴26c、 26cからボルト26d。
A short cylindrical clamp body 25 of the second clamp 20
A pair of semi-cylindrical members 26a and 26b are connected with their circumferential end surfaces facing each other, and the connection structure thereof is as follows. On the other hand, bolt holes 26h, 26h are perpendicularly bored to the end surface of the semi-cylindrical member 26b at a position slightly opposite to the position where the raceway 21 is formed on the end surface of the semi-cylindrical member 26b. Bolts 26d are inserted through elliptical bolt insertion holes 26c, 26c extending in a direction orthogonal to the radius on the outer peripheral surface near the circumferential end surface of the other semi-cylindrical member 26a so as to face each other.

26dを螺入させる。Screw in 26d.

半円筒部材26aの周方向端置去々のポル) 26d螺
大位置と対応する軌道21側寄りの位置にはボルト穴2
6fを穿設してあり、該ボルト穴26「には一端に螺条
を形成し、また、他端にテーパーを設けたノックピン2
6e(図面では一側方のもののみが現れる)の一端を螺
入しである。ノックピン26eのテーパ一部は半円筒部
材2Gbの11;1記ボルト穴2Gf穿設位置と対応す
る位置に穿設したピン穴26g内に嵌入しである。ノッ
クピン26eは両半円筒部材26a、26bの連結を整
合状態で行わせるためのものである。
A bolt hole 2 is provided at a position closer to the raceway 21 side corresponding to the large screw position of the semi-cylindrical member 26a.
6f is drilled in the bolt hole 26'', and a knock pin 2 is provided with a thread at one end and a taper at the other end.
6e (only one side is visible in the drawing) is screwed into one end. A portion of the taper of the knock pin 26e is fitted into a pin hole 26g drilled at a position corresponding to the hole 11;1 bolt hole 2Gf of the semi-cylindrical member 2Gb. The knock pin 26e is for connecting the two semi-cylindrical members 26a and 26b in an aligned state.

クランプ本体25の両側置去々には、半円筒部材26a
、26bの一方の周方向端面間に亘すようにして矩形板
状の連結金具27.27を夫々3本のビス23a。
Semi-cylindrical members 26a are provided on both sides of the clamp body 25.
, 26b, connecting fittings 27, 27 each having a rectangular plate shape are connected to three screws 23a, extending between one circumferential end surface of each of the connecting fittings 27, 26b.

23b、23cにて取付けである。ビス23b、23a
は半円筒部材26aの周方向端面寄りの位置の内、外側
夫々に取付けてあり、ビス23cは半円筒部材26bの
周方向端面寄りの位置であって、径方向に内面側へ少し
偏位した位置に取付けである。
It is attached at 23b and 23c. Screws 23b, 23a
The screws 23c are installed on the outer and outer sides of the semi-cylindrical member 26a at positions closer to the end surface in the circumferential direction, and the screws 23c are located closer to the end surface in the circumferential direction of the semi-cylindrical member 26b, and are slightly offset toward the inner side in the radial direction. Installed in position.

連結金具27.27の半円筒部材26b側に位置する部
分には、該半円筒部材26bの外側に湾曲した半円状の
案内孔27a(図面では一方の連結金具27のみについ
て現れる)を開設しである。案内孔27aの始点は前述
のビス23c取付位置に相当する。終点は半円筒部材2
6bの周方向端面から反対側に適長離隔した位置となっ
ている。 (t1方の周方向端面についてはこのような
連結金具2”1.2”lは取付けていない、連結金具2
7.27は両半円筒部材26a、26bを、ポル) 2
6d 、 26dを取外した状態にて、連結金具27.
27回りに回動させて連結金具27.27を設けていな
い方の周方向端面間を開いて未溶接間5からの取外しを
容易に行わしめるためのものである。
A semicircular guide hole 27a (which appears for only one of the connecting fittings 27 in the drawing) is formed in a portion of the connecting fittings 27.27 located on the side of the semi-cylindrical member 26b. It is. The starting point of the guide hole 27a corresponds to the above-mentioned mounting position of the screw 23c. The end point is semi-cylindrical member 2
It is located an appropriate distance away from the circumferential end surface of 6b on the opposite side. (For the circumferential end surface on the t1 side, such a connecting fitting 2"1.2"l is not installed.
7.27 refers to both semi-cylindrical members 26a and 26b.
With 6d and 26d removed, connect the connecting fittings 27.
27 to open the circumferential end surfaces on which the connecting fittings 27 and 27 are not provided, thereby facilitating removal from the unwelded space 5.

第2.5図に示すようにクランプ本体25の軌道21に
隣接する外周面には60゛間隔にてボルト孔29a。
As shown in FIG. 2.5, bolt holes 29a are provided at 60° intervals on the outer peripheral surface of the clamp body 25 adjacent to the raceway 21.

29a・・・を穿設してあり、該ポルト孔29a夫々に
は芯出しボルト29を外周側から螺入させである。なお
、ボルト29.29・・・と半円筒部材26a、26b
の周方向端面との位置関係は、両部方向端面から30゛
ずつ偏位した位置がボルト2’)、29・・・取付位置
となるようにしである。
29a... are bored, and a centering bolt 29 is screwed into each of the port holes 29a from the outer circumferential side. In addition, the bolts 29, 29... and the semi-cylindrical members 26a, 26b
The positional relationship with the circumferential end surfaces is such that the bolts 2'), 29, .

このような6本の芯出しボルト29.29・・・夫々の
螺入量を調整して、各ボルト29.29・・・をこれに
遊挿される未溶接管5に対して等量移動させて、各々を
未溶接管5の外周面に当接せしめる場合は、未溶接管5
は第2クランプ20により芯出し状態で支持されること
になる。
Adjust the screwing amount of each of these six centering bolts 29, 29, and move each bolt 29, 29 by the same amount relative to the unwelded pipe 5 loosely inserted therein. When each is brought into contact with the outer peripheral surface of the unwelded pipe 5, the unwelded pipe 5
is supported by the second clamp 20 in a centered state.

次にこのような第2クランプ20を分解する場合につい
て説明する。先ず、ポル) 26d 、 26dを取外
し、また、ノックビン26eをピン穴26gから抜き出
し、更にビス23cを緩めて、両半円箇部材26a。
Next, a case of disassembling the second clamp 20 will be described. First, remove the pins 26d and 26d, pull out the knock bottle 26e from the pin hole 26g, loosen the screw 23c, and remove both semicircular members 26a.

26bを連結金具27 、27回りに回動させる。そう
すると、半円筒部材26a 、 26bの他方の周方向
端部は大きく開口し、この開口部を利用して未溶接管5
からこれを外すことが可能となり、また、逆にこ、れを
未溶接管5に装着することも可能となり、着脱作業を迅
速に行うことができる。更に、取外し時において両者が
分離して紛失する等の虞がない。
26b is rotated around the connecting fittings 27, 27. Then, the other circumferential ends of the semi-cylindrical members 26a and 26b are largely opened, and the unwelded pipe 5 is opened using this opening.
It becomes possible to remove this from the pipe, and conversely, it also becomes possible to attach it to the unwelded pipe 5, so that the attachment and detachment work can be performed quickly. Furthermore, there is no risk of the two being separated and lost when removed.

なお、この場合に連結金具27は半円筒部材26の移動
に追随するが、案内孔27aの終点がビス23cに当接
するとその移動は停止する。
In this case, the connecting fitting 27 follows the movement of the semi-cylindrical member 26, but the movement is stopped when the end point of the guide hole 27a comes into contact with the screw 23c.

次に中間クランプ30について第7図に基づき説明する
。 I!iI体31は1対の半円環状部材31a、31
a夫々の両側開口端に、その径方向外側に延出形成した
突き合せ連結片31b、31b  (図面では一側のみ
現れる)同士を突き合せ、ポル) 37a、ナツト37
bにて締結したものである。同様に環体32も半円環状
部材31aよりも狭幅の1対の半円環状部材32a 、
 32aの突き合せ連結片32b、 32b同士を突き
合せてボルト38a、ナツト38bにて締結したもので
ある。環体3132は夫々の周面の4等配位置に、両者
間に亘すようにして取付けた4枚の連結板33.33・
・・により一体連結されてもくる。なお、連結板33.
33・・・と両頂体31,32の突き合せ連結部との位
置関係は、両突き合せ連結部からその周方向両側に夫々
45゜ずつ偏位した位置が連結板33.33・・・取付
位置となるように定めである。
Next, the intermediate clamp 30 will be explained based on FIG. 7. I! The iI body 31 has a pair of semicircular annular members 31a, 31
a butt connection pieces 31b, 31b (only one side is shown in the drawing) formed extending radially outward at both open ends of each a, butt together, 37a, nut 37
This agreement was concluded under b. Similarly, the ring body 32 also has a pair of semicircular annular members 32a narrower than the semicircular annular member 31a,
The connecting pieces 32b of 32a are butted against each other and fastened with bolts 38a and nuts 38b. The ring body 3132 has four connecting plates 33, 33, and 33 attached at four equally spaced positions on each circumferential surface so as to span between the two.
They are also integrally connected by... In addition, the connecting plate 33.
33... and the abutting connecting portions of both the top bodies 31, 32, the connecting plates 33, 33... The mounting position is specified.

両頂体31,32夫々の外周面の、突き合せ連結部。A butting connection portion of the outer peripheral surfaces of both top bodies 31 and 32, respectively.

連結板33と干渉しない3等配位置には夫々3個の軸支
持部材34.34  (図面では211現われている)
、35、35.35を取付けである。軸支持部材34.
35には前述した如く車軸34a 、 35aを取付け
てあり、車軸34aには車軸34b、ボールベアリング
34cを、また、車軸35aには車軸35bを取付けで
ある。車輪34b、35bの径方向位置は前述した如く
中間クランプ30を第1クランプ10.第2クランプ2
0に組付けた状態において、該車軸34b、35bが夫
々の軌道11゜21上に乗った状態で、該軌道11.2
1上を転接し得る位置に定めである。また、ボールベア
リング34cの径方向位置は、該ポールベアリング34
cが第1クランプ10のベアリング転勤面12上を転接
し得る位置に定めである。
There are three shaft support members 34 and 34 (211 appears in the drawing) at three equally spaced positions that do not interfere with the connecting plate 33.
, 35, 35.35 is the installation. Shaft support member 34.
As mentioned above, the axles 34a and 35a are attached to the axle 35, the axle 34b and the ball bearing 34c are attached to the axle 34a, and the axle 35b is attached to the axle 35a. The radial positions of the wheels 34b, 35b are as described above, with the intermediate clamp 30 being the first clamp 10. 2nd clamp 2
0, with the axles 34b and 35b riding on the respective tracks 11°21, the tracks 11.2
1 is set at a position where it can be brought into contact with the top. Further, the radial position of the ball bearing 34c is
c is set at a position where it can roll on the bearing rolling surface 12 of the first clamp 10.

また、適当な位置の連結板33の環体31側端部にはブ
ロック状の連結棒支持金具36を取付けである。
Further, a block-shaped connecting rod support fitting 36 is attached to the end of the connecting plate 33 on the ring body 31 side at an appropriate position.

金具36には溶接機2の駆動部2f方向に穴を貫通して
あり、この穴には前述した如く連結棒37が挿通される
ようになっている。これにより中間クランプ30が溶接
機2の駆動部2fに連動して管突き合せ部回りに周回移
動できるようになっている。
A hole is passed through the metal fitting 36 in the direction of the drive section 2f of the welding machine 2, and the connecting rod 37 is inserted through this hole as described above. This allows the intermediate clamp 30 to rotate around the pipe abutting portion in conjunction with the drive section 2f of the welding machine 2.

このような中間クランプ30を、ボルト37a、ナフト
37b及びポルH8a、ナフト38bを夫々分離し1、
  環体31.32を夫々分割、つまり中間クランプ3
0を2分割した状態で夫Hの車輪34b、34b、34
b、35b、35b。
Such an intermediate clamp 30 is separated from the bolt 37a, napht 37b, pole H8a, and napht 38b, respectively.
The rings 31 and 32 are divided into intermediate clamps 3 and 32 respectively.
Husband H's wheels 34b, 34b, 34 with 0 divided into two
b, 35b, 35b.

35bを第1クランプ10.第2クランプ20夫々の軌
道11.21上に乗せ、未溶接管5の中心位置を調整し
つつ、ボルト37aとナツト37bとを締結し、ボルト
38aとナフト38bとを締結することにより中間クラ
ンプ30を組付ける。そうすると、中間クランプ30は
第1クランプ10.第2クランプ20夫々を3点支持状
態で拘束する。従って、第1クランプ10と第2クラン
プ20、つまり既溶接管lと未溶接管5とは中間クラン
プ30により芯出し状態で連結されることになる。
35b to the first clamp 10. The intermediate clamp 30 is placed on the tracks 11 and 21 of each of the second clamps 20, and while adjusting the center position of the unwelded pipe 5, the bolt 37a and the nut 37b are fastened, and the bolt 38a and the nut 38b are fastened. Assemble. Then, the intermediate clamp 30 becomes the first clamp 10. Each of the second clamps 20 is restrained in a three-point supported state. Therefore, the first clamp 10 and the second clamp 20, that is, the welded pipe 1 and the unwelded pipe 5 are connected by the intermediate clamp 30 in a centered state.

この状態で溶接機2の駆動部2rを駆動して、駆動部2
fを既溶接管lに対して芯出し状態で外嵌固定した第1
クランプlO回りに周回移動せしめる場合は、該駆動部
2fと一体的に連動する溶接トーチ21は第1クランプ
10に対して芯出し状態で周回移動することになる。而
して、中間クランプ30により第1クランプ10と第2
クランプ20、つまり既溶接管1と未溶接管5とは芯出
し状態で連結されているので、溶接トーチ21の管軸方
向位置を管突き合せ部に整合させておく場合には、溶接
トーチ21は突き合せ部を正確にトレースすることがで
きる。
In this state, drive the drive section 2r of the welding machine 2 to
The first pipe in which f is fitted externally and fixed to the already welded pipe l in a centered state
When the welding torch 21 is moved around the clamp 1O, the welding torch 21, which is integrally linked with the drive section 2f, moves around the first clamp 10 in a centered state. Thus, the first clamp 10 and the second clamp 10 are connected by the intermediate clamp 30.
The clamp 20, that is, the welded pipe 1 and the unwelded pipe 5, are connected in a centered state, so if the welding torch 21 is to be aligned in the pipe axis direction with the pipe abutting part, the welding torch 21 can accurately trace the butt part.

また、この場合に中間クランプ30は連結棒37により
、駆動部2f、つまり溶接トーチ21と連動して周回移
動するので、連結板33が溶接トーチ21の周回移動の
妨げとはならず、従って突き合せ部を連続的に溶接する
ことができる。
Furthermore, in this case, the intermediate clamp 30 rotates in conjunction with the drive section 2f, that is, the welding torch 21, by the connecting rod 37, so the connecting plate 33 does not interfere with the circular movement of the welding torch 21, so that the The joint can be welded continuously.

(効果〕 叙上の如き第1クランプ、第2クランプ及び中間クラン
プを組立ててなる本発明装置にあっては、第1クランプ
に備えた4個のクランプ金具を既溶接管に対して等量移
動させることにより、第1クランプを既溶接管に対して
芯出し状態で外嵌固定することができ、また、第2クラ
ンプに備えた6本の芯出しボルトを未溶接管に対して等
量移動させることにより、第2クランプを未溶接管に対
して芯出し状態で外嵌固定することができ、更には中間
クランプに備えた6個の車輪を前記第1クランプ、第2
クランプに形成した軌道に夫々3個ずつ乗せた状態にて
該中間クランプを第1.第2クランプに組付ることによ
り、第1クランプと第2クランプ、換言すれば既溶接管
と未溶接管とを芯出し状態で連結することができる。そ
して、溶接機の溶接トーチが両管の突き合せ部回りに芯
出し状態で周回移動できるようになっているので、本発
明装置を用いる場合は突き合せ部を確実に溶接すること
ができる。また、溶接トーチと中間クランプとが一体連
動できるようになっているので、該中間クランプの周方
向に4枚備えた連結板が、その間にこれよりも管突き合
せ部に近接させて位置せしめた溶接トーチの移動を妨げ
ることはなく、従って突き合せ部を連続溶接することが
でき、能率の良い溶接が行える。
(Effects) In the device of the present invention, which is constructed by assembling the first clamp, second clamp, and intermediate clamp as described above, the four clamp fittings provided in the first clamp are moved by the same amount relative to the welded pipe. By doing so, the first clamp can be fitted and fixed to the welded pipe in a centered state, and the six centering bolts provided in the second clamp can be moved by the same amount relative to the unwelded pipe. By doing so, the second clamp can be externally fixed to the unwelded pipe in a centered manner, and furthermore, the six wheels provided on the intermediate clamp can be attached to the first clamp and the second clamp.
With three intermediate clamps placed on each track formed on the clamp, the intermediate clamp is placed in the first position. By assembling it to the second clamp, the first clamp and the second clamp, in other words, the welded pipe and the unwelded pipe can be connected in a centered state. Since the welding torch of the welding machine can move around the abutting portion of both tubes in a centered manner, when using the apparatus of the present invention, the abutting portion can be reliably welded. In addition, since the welding torch and the intermediate clamp can be integrally interlocked, four connecting plates provided in the circumferential direction of the intermediate clamp are positioned between them closer to the pipe butting part. The movement of the welding torch is not obstructed, so the abutted portions can be continuously welded, and welding can be performed efficiently.

また、第1クランプ、第2クランプ及び中間クランプ共
に、夫々2分割構造としたものであるので、本発明装置
を突き合せ部に装着、前説させる作業を迅速に行えるの
で、1つの突き合せ部の溶接終了後、次項の突き合せ部
の溶接に移行する際に能率よく移行でき、更には“馬”
、帯状クラブの如き従来のクランプを用いる場合に要す
る仮溶接を必要とせず、この面でも本発明装置を用いる
場合は溶接作業全体の能率を大幅に向上せしめることが
できる等、本発明は優れた効果を奏する。
In addition, since the first clamp, second clamp, and intermediate clamp each have a two-part structure, it is possible to quickly attach the device of the present invention to the abutting portion and perform the above-mentioned operations. After welding is complete, you can move on to welding the butt parts described in the next section efficiently, and you can
The present invention is superior in that it does not require temporary welding, which is required when using conventional clamps such as belt-like clamps, and in this respect, when the device of the present invention is used, the efficiency of the entire welding work can be greatly improved. be effective.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明装置を用いて管突き合せ部を溶接する状
態を示す一部破断斜視図、第2図はその上側半分を示す
側断面図、第3図は第1クランプを第2図の■方向から
視た側面図、第4図は第3図のIV−IV線による断面
図、第5図は第2クランプを第2図の■方向から視た側
面図、第6図は第5図を■方向から視た一分破砕拡大矢
視図、第7図は中間クランプの斜視図、第8.9図は夫
々従来のクランプを用いて管突き合せ部を溶接する状態
を示す模式図、斜視図である。 1・・・既溶接管 2・・・溶接機 21・・・溶接ト
ーチ10・・・築lクランプ 11・・・第1fill
道 14・・・ラック17a・・・クランプ金具 20
・・・第2クランプ 21・・・軌道29・・・芯出し
ボルト 30・・・中間クランプ33.33・・・連結
板 34b  ・・・、35b  ・・・・・・車輪時
 許 出願人  住金鋼管工事株式会社代理人 弁理士
  河  野  登  夫■ 3 口 第 ← 図 vA S 力 百 G (2) 第 ε 口 第 qrh
Fig. 1 is a partially cutaway perspective view showing the welding of pipe abutting parts using the device of the present invention, Fig. 2 is a side sectional view showing the upper half thereof, and Fig. 3 is the first clamp shown in Fig. 2. Figure 4 is a cross-sectional view taken along line IV-IV in Figure 3, Figure 5 is a side view of the second clamp viewed from direction ■ in Figure 2, Figure 6 is a side view of the Fig. 5 is a one-minute enlarged fragmentation view seen from direction ■, Fig. 7 is a perspective view of the intermediate clamp, and Figs. 8 and 9 are schematic diagrams showing the state of welding the butt of pipes using conventional clamps, respectively. FIG. 1 is a perspective view. 1... Already welded pipe 2... Welding machine 21... Welding torch 10... Construction clamp 11... 1st fill
Road 14...Rack 17a...Clamp fittings 20
...Second clamp 21...Race 29...Centering bolt 30...Intermediate clamp 33.33...Connection plate 34b..., 35b...Wheel time Applicant Sumitomo Metals Noboru Kawano, Patent Attorney, Agent of Steel Pipe Construction Co., Ltd.

Claims (1)

【特許請求の範囲】 1、2本の管を相互に突き合せた部分を外側より固定す
るクランプ装置であって、 筒状をなし、その周面における管の突き合 せ部側に第1の軌道を、反対側に前記突き合せ部に沿い
周回移動する溶接トーチを案内する第2の軌道を備え、
一方の管に対して着脱可能に、また、芯出し可能に外嵌
固定すべき第1クランプと、 筒状をなし、その周面に軌道を備え、他方 の管に対して着脱可能に、また、芯出し可能に外嵌固定
すべき第2クランプと、 第1の軌道に転接する車輪を備えた環体、 第2クランプの軌道に転接する車輪を備えた環体及びこ
れらの環体をその周方向の複数の位置にて各連結する複
数の連結板からなり、第1、第2クランプに着脱可能に
跨設されて、これらを芯出しした状態に連結し、前記溶
接トーチに連動して周回移動可能になしてある中間クラ
ンプと を具備することを特徴とするクランプ装置。
[Scope of Claims] A clamping device for fixing from the outside a portion where one or two tubes abut against each other, the device having a cylindrical shape and having a first track on the side of the abutting portion of the tubes on the circumferential surface thereof. A second track is provided on the opposite side for guiding a welding torch that circulates along the abutting portion,
A first clamp that is to be fitted onto the outside of one of the pipes so as to be attachable and detachable to the other pipe, and to be able to be centered; , a ring body having a second clamp to be fitted and fixed on the outside so as to enable centering, a ring body equipped with a wheel that rolls in contact with the first track, a ring body equipped with a wheel that rolls in contact with the track of the second clamp, and these ring bodies. It consists of a plurality of connecting plates that are connected at a plurality of positions in the circumferential direction, and is removably installed across the first and second clamps, and connects them in a centered state, and is interlocked with the welding torch. 1. A clamping device comprising: an intermediate clamp that is movable in a circumferential direction.
JP20132584A 1984-09-25 1984-09-25 Clamping device Pending JPS6178596A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20132584A JPS6178596A (en) 1984-09-25 1984-09-25 Clamping device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20132584A JPS6178596A (en) 1984-09-25 1984-09-25 Clamping device

Publications (1)

Publication Number Publication Date
JPS6178596A true JPS6178596A (en) 1986-04-22

Family

ID=16439139

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20132584A Pending JPS6178596A (en) 1984-09-25 1984-09-25 Clamping device

Country Status (1)

Country Link
JP (1) JPS6178596A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5126523A (en) * 1990-11-02 1992-06-30 Atlantic Point Device for welding pipes to each other
US6840433B2 (en) * 1999-11-03 2005-01-11 Vermaat Technics B.V. Method and device for welding pipes
CN100431763C (en) * 2004-03-31 2008-11-12 陈炯 External counter incision heater
US7469813B2 (en) * 2003-03-21 2008-12-30 Voestalpine Schienen Gmbh Device and method for joining the faces of parts
US7780065B2 (en) 1999-11-03 2010-08-24 Vermaat Technics B.V. Method and device for welding pipes
US7815093B2 (en) * 2006-09-04 2010-10-19 Heerema Marine Contractors Nederland B.V. Guiding device
CN102248340A (en) * 2011-07-10 2011-11-23 莱芜市东岳永盛车桥有限公司 Rear axle housing same-platform double-rail parallel axial welding device
US20150321280A1 (en) * 2011-11-24 2015-11-12 Weldbot Ltd. System and method for modular portable welding and seam tracking
CN106425268A (en) * 2016-11-21 2017-02-22 刘钰千 Automatic welding positioner
CN113560765A (en) * 2021-09-26 2021-10-29 徐州金尊机械有限公司 Welding device for metal pipes

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5126523A (en) * 1990-11-02 1992-06-30 Atlantic Point Device for welding pipes to each other
US6840433B2 (en) * 1999-11-03 2005-01-11 Vermaat Technics B.V. Method and device for welding pipes
US7780065B2 (en) 1999-11-03 2010-08-24 Vermaat Technics B.V. Method and device for welding pipes
US7469813B2 (en) * 2003-03-21 2008-12-30 Voestalpine Schienen Gmbh Device and method for joining the faces of parts
US7735705B2 (en) 2003-03-21 2010-06-15 Voestalpine Schienen Gmbh Device and method for joining the faces of parts
CN100431763C (en) * 2004-03-31 2008-11-12 陈炯 External counter incision heater
US7815093B2 (en) * 2006-09-04 2010-10-19 Heerema Marine Contractors Nederland B.V. Guiding device
CN102248340A (en) * 2011-07-10 2011-11-23 莱芜市东岳永盛车桥有限公司 Rear axle housing same-platform double-rail parallel axial welding device
US20150321280A1 (en) * 2011-11-24 2015-11-12 Weldbot Ltd. System and method for modular portable welding and seam tracking
US9776272B2 (en) * 2011-11-24 2017-10-03 Weldobot Ltd. System and method for modular portable welding and seam tracking
CN106425268A (en) * 2016-11-21 2017-02-22 刘钰千 Automatic welding positioner
CN113560765A (en) * 2021-09-26 2021-10-29 徐州金尊机械有限公司 Welding device for metal pipes

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