JPH04367395A - Plate joint welding device for steel plate - Google Patents
Plate joint welding device for steel plateInfo
- Publication number
- JPH04367395A JPH04367395A JP16635291A JP16635291A JPH04367395A JP H04367395 A JPH04367395 A JP H04367395A JP 16635291 A JP16635291 A JP 16635291A JP 16635291 A JP16635291 A JP 16635291A JP H04367395 A JPH04367395 A JP H04367395A
- Authority
- JP
- Japan
- Prior art keywords
- steel plates
- welding
- carrying
- plate
- gap
- 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.)
- Granted
Links
- 238000003466 welding Methods 0.000 title claims abstract description 70
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 58
- 239000010959 steel Substances 0.000 title claims abstract description 58
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 21
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 26
- 239000000463 material Substances 0.000 claims description 16
- 238000005304 joining Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 238000007790 scraping Methods 0.000 description 8
- 210000000078 claw Anatomy 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Landscapes
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、橋梁箱桁，鈑桁部材と
して用いられる鋼板を板継ぎするための片面突合わせ溶
接装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a single-sided butt welding device for joining steel plates used as bridge box girders and sheet girder members.
【０００２】0002
【発明の背景】一般に橋梁箱桁，鈑桁部材として用いら
れる広幅鋼板は、図９で示すように夫々板厚の異った鋼
板を板継ぎ溶接し、仮想線で示すように切断されて使用
される。[Background of the Invention] Wide steel plates, which are generally used as bridge box girders and plate girder members, are made by welding steel plates of different thicknesses together, as shown in Figure 9, and then cutting them as shown by the imaginary lines. Ru.
【０００３】板厚の異る鋼板を板継ぎ溶接する継手形式
としては、図１１に示すように下面合わせ、図１２のよ
うに上面合わせ、および、図１３に示すように板厚中心
合わせがある。[0003] The joint types for welding steel plates of different thicknesses include bottom-to-bottom matching as shown in FIG. 11, top-to-bottom matching as shown in FIG. 12, and centering in thickness as shown in FIG. .
【０００４】0004
【従来技術とその課題】従来一般に行われている板継ぎ
溶接手段は、板厚の異る鋼板を開先を介して固定定盤、
または、搬送コンベア上にセットし、両面よりサブマー
ジアーク溶接などで板継ぎ溶接を行っていた。このため
、無監視溶接ができないばかりか、反転作業に人手を要
したり、ガウジング作業による作業環境悪化に問題があ
り、一部で片面溶接の例があるが、対象継手の下面を位
置決めしてあらゆる継手形式に対応できるようにした装
置は皆無であった。（製鉄研究第２８０号Ｐ６５〜Ｐ７
４１９７４年発行参照）[Prior art and its problems] Conventionally commonly used plate joint welding methods involve fixing steel plates of different thickness through grooves on a surface plate,
Alternatively, they were set on a conveyor and plate joint welding was performed from both sides using submerged arc welding. For this reason, unsupervised welding is not only impossible, but it also requires manpower to reverse the work, and there are problems with the deterioration of the work environment due to gouging work.Although there are some examples of single-sided welding, it is necessary to position the bottom surface of the target joint. There was no device that could accommodate all types of joints. (Steel Research No. 280 P65-P7
(Refer to issue 41974)
【０００５】本発明の目的は、橋梁箱桁，鈑桁部材など
鋼構造物の流れ生産における板継ぎ溶接において、可能
な限りの無監視溶接を実現し、あらゆる継手形式に対応
できるＭＡＧ溶接による片面自動溶接装置を提供するこ
とにある。The purpose of the present invention is to realize as much unsupervised welding as possible in plate joint welding in the flow production of steel structures such as bridge box girders and sheet girder members, and to achieve single-sided automatic welding using MAG welding that can accommodate all types of joints. Our objective is to provide welding equipment.
【０００６】[0006]
【課題を解決するための手段】従来技術の課題を解決す
る本発明の構成は、板継ぎ形状に組み立てられた鋼板を
搬送する上流側搬入体と下流側搬出体との間に、水平姿
勢の旋回架台を配設するとともに、この旋回架台上に該
旋回架台の軸線方向と直交する方向に水平移動する移動
架台を乗載せしめ、この移動架台上に、上記旋回架台の
軸線にそい所要の間隙を介して各別に昇降しうる２個の
下部架台を搭載し、この両下部架台間の間隙部に、鋼板
の板継ぎ形式に対応して板継ぎ鋼板間に密接する裏当て
材を上下動可能に配設し、更に、上記移動架台の両側に
、上記上流側搬入体と下流側搬出体と同レベルのパスラ
インをもつ上記板継ぎ鋼板の搬送補助ローラ群列を配設
せしめ、一方、上記移動架台には、上記両下部架台の上
方に対応して配設され各別に昇降する２個の上部架台を
搭載し、この何れか一方の上部架台には、両上部架台間
の間隙の長手方向中心線にそって水平往復移動する溶接
トーチをとりつけるとともに、該溶接トーチの移動を邪
魔しない間隙部に上記鋼板の板継ぎ開先を検知する複数
のセンサーを適当の間隔を介して並設したものである。[Means for Solving the Problems] The structure of the present invention, which solves the problems of the prior art, is to maintain a horizontal position between an upstream carry-in body and a downstream carry-out body that convey steel plates assembled in a plate joint shape. A rotating frame is provided, and a movable frame that moves horizontally in a direction orthogonal to the axial direction of the rotating frame is mounted on the rotating frame, and a required gap is placed on the movable frame along the axis of the rotating frame. Equipped with two lower frames that can be raised and lowered separately through the lower frames, and in the gap between the two lower frames, a backing material that is in close contact between the jointed steel plates can be moved up and down in accordance with the type of jointed steel plates. Further, on both sides of the movable frame, a group of conveyance auxiliary rollers for the spliced steel plate having a pass line on the same level as the upstream loading body and the downstream loading body are disposed, while the The movable pedestal is equipped with two upper pedestals that are disposed above the two lower pedestals and move up and down separately. A welding torch that horizontally reciprocates along the center line is attached, and a plurality of sensors for detecting the plate joint groove of the steel plate are arranged in parallel at appropriate intervals in the gap that does not interfere with the movement of the welding torch. It is.
【０００７】[0007]
【作用】搬送手段により対象部材を所定位置に引き込み
、装置全体を旋回、および、移動し、対象部材の溶接継
手に対して装置全体の芯合わせを制御信号により自動的
に行い、溶接段取り作業をシーケンス制御対象とする。[Operation] The target member is pulled into a predetermined position by the conveyance means, the entire equipment is rotated and moved, and the entire equipment is automatically aligned with the welding joint of the target member using control signals, and welding setup work is performed. Subject to sequence control.
【０００８】下部架台を各別に上面位置決めし、その位
置を基準として対象部材を挾みこんだ状態で上部架台を
各別に押しつけ、同様に継手形式の選択と継手拘束を制
御対象とする。[0008] The lower mounts are individually positioned on the upper surface, and the upper mounts are pressed individually with the object member sandwiched between the lower mounts based on that position, and the joint type selection and joint restraint are similarly controlled.
【０００９】次に、芯合わせ、および、継手の拘束が完
了した継手下面より裏波溶接用の裏当て材を押しつける
ことを制御対象とすることにより、一連の板継ぎ溶接準
備作業を無監視で実行する。Next, by controlling the pressing of the backing material for uranami welding from the bottom surface of the joint after centering and joint restraint has been completed, a series of plate joint welding preparation work can be performed without monitoring. Execute.
【００１０】0010
【実施例】次に、図面について本発明実施例の詳細を説
明する。図１は本発明装置の側面図、図２は一部切欠正
面図、図３は正面図、図４は旋回架台の平面図、図５は
板継ぎ開先を検知した状態の要部の一部切欠正面図、図
６は板継ぎ溶接状態の要部の一部切欠正面図、図７はシ
ールドガスノズルのスパッターの除去を示す要部の一部
切欠正面図、図８は同上一部切欠平面図、図９は鋼板の
板継ぎ状態を示す平面図、図１０は板継ぎ鋼板を使用し
た橋梁箱桁の斜視図、図１１は下面合わせの継手形式を
示す説明図、図１２は上面合わせの継手形式を示す説明
図、図１３は板厚中心合わせの継手形式を示す説明図で
ある。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, details of embodiments of the present invention will be explained with reference to the drawings. Fig. 1 is a side view of the device of the present invention, Fig. 2 is a partially cutaway front view, Fig. 3 is a front view, Fig. 4 is a plan view of the rotating frame, and Fig. 5 shows a main part of the device in a state where the plate joint groove is detected. Fig. 6 is a partially cutaway front view of the main part in the plate joint welding state, Fig. 7 is a partially cutaway front view of the main part showing the removal of spatter from the shield gas nozzle, and Fig. 8 is a partially cutaway plane of the same as above. Figure 9 is a plan view showing the joint state of steel plates, Figure 10 is a perspective view of a bridge box girder using plate-jointed steel plates, Figure 11 is an explanatory diagram showing the bottom-to-bottom joint type, and Figure 12 is the top-to-bottom joint type. FIG. 13 is an explanatory diagram showing a joint type in which the center of plate thickness is aligned.
【００１１】図９，図１０で示すような、橋梁箱桁，鈑
桁部材として用いられる板継ぎ鋼板ＡのＭＡＧ溶接片面
溶接への適用例に基いて本実施例を説明する。The present embodiment will be explained based on an example of application to single-sided MAG welding of a spliced steel plate A used as a bridge box girder and plate girder member, as shown in FIGS. 9 and 10.
【００１２】図２に示す１は、板継ぎ形状に組み立てら
れた板厚の異る鋼板２ａ，２ｂ（図９〜図１３参照）を
搬送する上流側搬入体であって、該上流側搬入体１と所
要の間隔を介して下流側搬出体３が基礎４上に設けてあ
る。Reference numeral 1 shown in FIG. 2 is an upstream carry-in body for conveying steel plates 2a and 2b (see FIGS. 9 to 13) having different thicknesses assembled in a plate joint shape. 1 and a downstream carrying body 3 is provided on the foundation 4 with a required spacing therebetween.
【００１３】上記上流側搬入体１と下流側搬出体３との
間の基礎４には、図４に示すように平面形状が長方形の
ピット５が形成してあり、このピット５の中心部に軸受
６を設け、これに平面形状が長方形の旋回架台７の中心
部を旋回可能に軸支せしめる。そして、上記旋回架台７
の長手方向両端部の下面には、図１，図３，図４に示す
ように複数の転輪８が設けてあり、この両転輪８は、上
記軸受６を中心とした曲率半径をもち、かつ、上記ピッ
ト５内に敷設された案内レール９上に乗載せしめられて
いる。図４に示す１０は、上記所定の転輪８に直結した
ギャードモータで、このギャードモータ１０の正，逆転
駆動により軸受６を中心として旋回架台７が旋回回動し
うるようにしたものである。A pit 5 having a rectangular planar shape is formed in the foundation 4 between the upstream carrying body 1 and the downstream carrying body 3, as shown in FIG. A bearing 6 is provided, on which a center portion of a rotating pedestal 7 having a rectangular planar shape is rotatably supported. And the above-mentioned turning frame 7
As shown in FIGS. 1, 3, and 4, a plurality of wheels 8 are provided on the lower surface of both ends in the longitudinal direction, and both wheels 8 have a radius of curvature centered on the bearing 6. , and is mounted on a guide rail 9 laid in the pit 5. Reference numeral 10 shown in FIG. 4 is a geared motor directly connected to the predetermined wheel 8, and the rotating frame 7 can be rotated around the bearing 6 by forward and reverse driving of the geared motor 10.
【００１４】図１，図２，図３に示すように、上記旋回
架台７の上面にはこれと略同形同大の移動架台１１が搭
載されている。この移動架台１１の下面には、特に図１
で明らかなように、上記移動架台１１を旋回架台７の長
手軸線方向と直交する方向に往復移動させるためのリニ
アガイド１２が複数列とりつけられている。そして、移
動架台１１を旋回架台７の長手軸線方向と直交する方向
に移動させるために、旋回架台７の上面に設けられたラ
ック杆（図示略）に噛合するピニオン（図示略）を移動
架台１１にとりつけ、このピニオンがシーケンス制御さ
れるギャードモータ１３によって駆動されるようにした
ものである。図中１４は、移動架台１１の少くとも長辺
側にとりつけられ、上記ピット５の上面を被覆するピッ
トカバーである。As shown in FIGS. 1, 2, and 3, a movable pedestal 11 having substantially the same shape and size is mounted on the upper surface of the rotating pedestal 7. On the lower surface of this movable frame 11, in particular,
As is clear, a plurality of rows of linear guides 12 are installed for reciprocating the movable pedestal 11 in a direction orthogonal to the longitudinal axis of the rotating pedestal 7. In order to move the movable pedestal 11 in a direction perpendicular to the longitudinal axis direction of the swivel pedestal 7, a pinion (not shown) that engages with a rack rod (not shown) provided on the upper surface of the swivel pedestal 7 is moved to the movable pedestal 11. This pinion is driven by a geared motor 13 which is sequence controlled. In the figure, reference numeral 14 denotes a pit cover that is attached to at least the long side of the movable frame 11 and covers the upper surface of the pit 5.
【００１５】図２，図３に示すように、上記移動架台１
１の上部には、上記旋回架台、つまり、移動架台１１の
長手軸線方向にそい、かつ、所要の間隙１５を介して各
別に昇降しうる２個の下部架台１６ａ，１６ｂを搭載す
る。この両下部架台１６ａ，１６ｂの両端部には、図１
に示すように、移動架台１１に設置したシーケンス制御
されるギャードモータ１７によって昇降駆動するスクリ
ュージャッキ１８が各別にとりつけられている。また、
上記下部架台１６ａ，１６ｂは上流側と下部側に構成さ
れるとともに、上述のように両端支持であるためにたわ
みが生ずる。このたわみにより鋼板２ａ，２ｂの位置決
め、および、拘束が不均一になることから、当り面に図
２に示すように多数条、つまり、各下部架台１６ａ，１
６ｂの長手軸線方向と直交する方向に多数条のたわみ調
整フィラー１９がとりつけられている。As shown in FIGS. 2 and 3, the movable frame 1
Mounted on the upper part of the rotary frame 1 are two lower frames 16a and 16b which extend in the longitudinal axis direction of the rotating frame 11 and which can be raised and lowered separately through a required gap 15. At both ends of both lower frames 16a and 16b,
As shown in FIG. 2, screw jacks 18 are individually attached to the movable frame 11 and are driven up and down by sequence-controlled geared motors 17. Also,
The lower frames 16a and 16b are configured on the upstream side and the lower side, and as described above, are supported at both ends, so that flexure occurs. This deflection makes the positioning and restraint of the steel plates 2a and 2b uneven, so there are many stripes on the contact surface as shown in FIG.
A large number of deflection adjustment fillers 19 are attached in a direction perpendicular to the longitudinal axis direction of the member 6b.
【００１６】上記下部架台１６ａ，１６ｂ間の間隙１５
には、図５，図６に示すように、間隙１５の上部で相対
向する面に側面形状がＬ字形で長尺の受片２０を対称的
にとりつけ、この両受片２０間に取付片２１を垂設した
長尺の受座２２を橋架的に載置する。上記取付片２１に
は長尺の支持座２３に垂下した取付片２４が首振り可能
に軸支してあり、また、上記支持座２３上には比較的肉
厚の耐熱材料よりなる長尺のホース２５が載設されてい
る。また、上記支持座２３の上面両縁部には複数の案内
ピン２６が対称的に立設されており、この各案内ピン２
６には、上記ホース２５の膨縮作用により上下動する台
座２７が挿入支持されている。そして、この台座２７上
には、人手によって挿入され、かつ、図６に示すように
鋼板２ａ，２ｂに密接する裏波溶接用の裏当て材２８を
交換可能に保持する長尺のケース２９が乗載してある。Gap 15 between the lower frames 16a and 16b
As shown in FIGS. 5 and 6, long receiving pieces 20 with L-shaped side surfaces are symmetrically attached to opposing surfaces at the upper part of the gap 15, and a mounting piece is inserted between both receiving pieces 20. A long receiving seat 22 having a vertical support 21 is placed thereon like a bridge. A mounting piece 24 hanging from a long support seat 23 is rotatably supported on the mounting piece 21, and a long support member 24 made of a relatively thick heat-resistant material is mounted on the support seat 23. A hose 25 is installed. Further, a plurality of guide pins 26 are symmetrically provided on both edges of the upper surface of the support seat 23, and each of the guide pins 26
A pedestal 27 is inserted into and supported by 6, which moves up and down due to the expansion and contraction action of the hose 25. On this pedestal 27 is a long case 29 that is inserted manually and holds replaceably a backing material 28 for Uranami welding that is in close contact with the steel plates 2a and 2b as shown in FIG. It's on board.
【００１７】図１，図２に示すように、上記移動架台１
１の上流側と下流側の端縁部上面には、この移動架台１
１の長手軸線方向にそった支持杆３０が脚杆３１によっ
て夫々立設されており、この両支持杆３０の上面には、
上記上流側搬入体１，下流側搬出体３のパスラインと同
高のパスラインをもつ多数の搬送補助ローラ３２が設け
られている。尚、上記下部架台１６ａ，１６ｂの上面、
詳しくは、たわみ調整フィラー１９の上面は、常時は上
記パスラインより下位におかれることは当然である。As shown in FIGS. 1 and 2, the movable frame 1
The movable frame 1 is placed on the upper surface of the upstream and downstream edge parts of 1.
Support rods 30 along the longitudinal axis of 1 are erected by leg rods 31, and on the upper surfaces of both support rods 30,
A large number of conveyance auxiliary rollers 32 having pass lines of the same height as the pass lines of the upstream carry-in body 1 and the downstream carry-out body 3 are provided. In addition, the upper surfaces of the lower mounts 16a and 16b,
Specifically, it is natural that the upper surface of the deflection adjustment filler 19 is always placed below the above-mentioned pass line.
【００１８】図２，図３から明らかなように、上記両下
部架台１６ａ，１６ｂの上側には、断面形状がＬ字形で
ボックス構造をした２個の上部架台３３ａ，３３ｂが昇
降可能に、かつ、対称的に配設されている。上記両上部
架台３３ａ，３３ｂは上流側と下流側に配設され、両架
台間には上記下部架台１６ａ，１６ｂ間の間隙１５と略
同等の間隙３４が設けてある。As is clear from FIGS. 2 and 3, above the lower frames 16a and 16b, two upper frames 33a and 33b having an L-shaped cross section and a box structure are movable up and down. , arranged symmetrically. The upper frames 33a and 33b are arranged on the upstream side and the downstream side, and a gap 34 substantially equivalent to the gap 15 between the lower frames 16a and 16b is provided between the two frames.
【００１９】図１に示すように、上記両上部架台３３ａ
，３３ｂの両端は、上記移動架台１１上に設けたシーケ
ンス制御される油圧シリンダ３５に支持され、この油圧
シリンダ３５によって昇降するようにしてある。このよ
うに、上部架台３３ａ，３３ｂは油圧シリンダ３５によ
る両端支持構造であるため、たわみが生ずる。このたわ
みにより鋼板２ａ，２ｂの拘束が不均一になることから
、当り面に図１，図２に示すように多数条、つまり、各
上部架台３３ａ，３３ｂの長手軸線方向と直交する方向
に多数条のたわみ調整フィラー３６がとりつけられてい
る。また、通常の状態では、両上部架台３３ａ，３３ｂ
の当り面は、上記搬送手段のパスラインより上方にあり
、鋼板２ａ，２ｂの搬入を妨げない位置にあることは当
然のことである。As shown in FIG. 1, both upper frames 33a
, 33b are supported by sequence-controlled hydraulic cylinders 35 provided on the movable frame 11, and are raised and lowered by the hydraulic cylinders 35. In this way, since the upper frames 33a and 33b have a structure in which both ends are supported by the hydraulic cylinders 35, deflection occurs. Since the restraint of the steel plates 2a and 2b becomes uneven due to this deflection, there are many stripes on the contact surface as shown in FIGS. A strip deflection adjusting filler 36 is attached. In addition, in a normal state, both upper frames 33a, 33b
It goes without saying that the abutting surface is located above the pass line of the conveying means and is located at a position that does not impede the conveyance of the steel plates 2a, 2b.
【００２０】図２に示すように、上記下流側の上部架台
３３ｂの段部上面には、シーケンス制御されるサーボモ
ータ（図示略）によって往復自走する台車３７を設け、
この台車３７にはシーケンス制御されるギャードモータ
３８によってワイヤ突き出し長さが調整されるＭＡＧ溶
接などの溶接トーチ３９を設ける。該溶接トーチ３９は
図２，図５，図６などから明らかなように、溶接作業時
は常に両上部架台３３ａ，３３ｂ間の間隙３４の中央に
位置させるものである。４０は揺動ベースで、サーボモ
ータ（図示略）によって溶接トーチ３９を間隙３４の長
手方向と直交する方向にシフトすることも可能である。
図中３９ａは溶接ワイヤである。As shown in FIG. 2, on the upper surface of the stepped portion of the upper pedestal 33b on the downstream side, a cart 37 is provided which is self-propelled back and forth by a sequence-controlled servo motor (not shown).
This truck 37 is provided with a welding torch 39 for MAG welding or the like whose wire protrusion length is adjusted by a geared motor 38 that is sequence-controlled. As is clear from FIGS. 2, 5, and 6, the welding torch 39 is always positioned at the center of the gap 34 between the upper frames 33a and 33b during welding work. Reference numeral 40 denotes a swing base, and it is also possible to shift the welding torch 39 in a direction perpendicular to the longitudinal direction of the gap 34 by a servo motor (not shown). In the figure, 39a is a welding wire.
【００２１】図１，図２，図３に示すように、上記下流
側の上部架台３３ｂの上方には、支杆４１によって支持
され、かつ、上部架台３３ｂの長手軸線方向にそった支
持台４２が設けてあり、この支持台４２上にはこれの長
手方向にそった平行２条の案内レール４３が敷設されて
いる。該案内レール４３には、シーケンス制御されるサ
ーボモータ４４によって上記溶接トーチ３９の台車３７
と同期走行する台車４５を乗載し、この台車４５上には
溶接ワイヤドラム４６を搭載する。図中４７は溶接ワイ
ヤ３９ａのガイド、４８は溶接ワイヤ３９ａの送給器，
４９は操作盤で、板継ぎされる鋼板２ａ，２ｂの板厚，
継手形式、および、各部材のシーケンス制御の入出力を
司るものである。As shown in FIGS. 1, 2, and 3, above the upper pedestal 33b on the downstream side, a support pedestal 42 is supported by a support rod 41 and extends along the longitudinal axis of the upper pedestal 33b. is provided, and two parallel guide rails 43 are laid along the longitudinal direction of the support base 42. A carriage 37 of the welding torch 39 is mounted on the guide rail 43 by a servo motor 44 that is sequence-controlled.
A welding wire drum 46 is mounted on the carriage 45, which runs in synchronization with the carriage 45. In the figure, 47 is a guide for the welding wire 39a, 48 is a feeder for the welding wire 39a,
Reference numeral 49 is an operation panel that displays the thickness of the steel plates 2a and 2b to be spliced;
It controls input and output of joint type and sequence control of each member.
【００２２】図２に示すように、上記下流側の上部架台
３３ｂの下流側には取付台５０を設け、この取付台５０
上に冷却ユニット，溶接機制御盤５１と溶接材用の炭酸
ガスヘッダーを搭載し、溶接トーチ３９への炭酸ガスの
供給を管理する。As shown in FIG. 2, a mounting base 50 is provided on the downstream side of the upper frame 33b on the downstream side, and this mounting base 50
A cooling unit, a welding machine control panel 51, and a carbon dioxide gas header for welding materials are mounted on the top to manage the supply of carbon dioxide gas to the welding torch 39.
【００２３】図２，図５，図６に示すように、上記間隙
３４に臨む上流側の上部架台３３ａの壁面下部には、適
当の間隔を介して複数、例えば、３個のセンサー、つま
り、光電スイッチＳ１，Ｓ２，Ｓ３（Ｓ２，Ｓ３につい
ては図示略）を設ける。この光電スイッチＳ１，Ｓ２，
Ｓ３は、上流側搬入体１から搬入される鋼板２ａ，２ｂ
の板継ぎ開先を検知するもので、上記制御盤５１に接続
されている。As shown in FIGS. 2, 5, and 6, a plurality of sensors, for example, three sensors, are installed at appropriate intervals on the lower part of the wall of the upper frame 33a on the upstream side facing the gap 34. Photoelectric switches S1, S2, and S3 (S2 and S3 are not shown) are provided. These photoelectric switches S1, S2,
S3 denotes steel plates 2a and 2b carried in from the upstream carrying body 1.
It is connected to the control panel 51 mentioned above.
【００２４】図１，図２に示す５２は油圧ユニットで、
これには油圧を必要とする各部材の配管（図示略）が設
けてあり、該油圧ユニット５２は上記上部架台３３ａの
上流側にとりつけた取付台５３上に搭載設置されている
。52 shown in FIGS. 1 and 2 is a hydraulic unit;
This is provided with piping (not shown) for each member that requires hydraulic pressure, and the hydraulic unit 52 is mounted on a mounting base 53 attached to the upstream side of the upper frame 33a.
【００２５】図７，図８は、ＭＡＧ溶接などシールドガ
スノズル５４に付着したスパッタ５５を人手を要するこ
となく付着スパッタ５５を除去する手段を示している。
上記両上部架台３３ａ，３３ｂ間に構成されている間隙
３４に臨む上部架台３３ａ，３３ｂの壁面端部に、上記
シールドガスノズル５４の外径に適合する円弧状のかき
落し爪５６ａ，５６ｂを上下に、而も、夫々対向的にと
りつける。FIGS. 7 and 8 show a means for removing spatter 55 adhering to the shield gas nozzle 54 without requiring manual labor, such as MAG welding. Arc-shaped scraping claws 56a, 56b that match the outer diameter of the shield gas nozzle 54 are arranged vertically on the wall ends of the upper frames 33a, 33b facing the gap 34 formed between the upper frames 33a, 33b. However, they are attached to each other oppositely.
【００２６】上記台車３７によって溶接トーチ３９のシ
ールドガスノズル５４を相対向するかき落し爪５６ａ，
５６ｂ間に位置させ、次いで、揺動ベース４０によって
シールドガスノズル５４を矢印方向に移動させて一方の
かき落し爪５６ａに押し当てる。次に、ギャードモータ
３８によって溶接トーチ３９を上昇させ付着せるスパッ
タ５５をかき落す。次に、ギャードモータ３８によって
溶接トーチ３９を旧位に下降させ、揺動ベース４０でシ
ールドガスノズル５４を他方のかき落し爪５６ｂに押し
つけ、上記と同様な動作でスパッタ５５をかき落す。こ
のかき落し操作は、溶接トーチ３９による溶接パスごと
に行うか、あるいは、数溶接パスごとに行うものである
。これらの作業は上記制御盤５１のシーケンス制御によ
って行われる。A scraping claw 56a, which faces the shield gas nozzle 54 of the welding torch 39 by means of the cart 37,
56b, and then the shield gas nozzle 54 is moved in the direction of the arrow by the swing base 40 and pressed against one of the scraping claws 56a. Next, the welding torch 39 is raised by the guard motor 38 to scrape off the deposited spatter 55. Next, the welding torch 39 is lowered to the old position by the guard motor 38, the shield gas nozzle 54 is pressed against the other scraping claw 56b by the swing base 40, and the spatter 55 is scraped off by the same operation as described above. This scraping operation is performed every welding pass by the welding torch 39, or every few welding passes. These operations are performed by sequence control of the control panel 51.
【００２７】[0027]
【作用の説明】次に、上記実施例に基いて板継ぎ溶接作
業を説明する。初期状態としては、ラインに対して旋回
架台７，移動架台１１の長手軸線は直交状態にあり、搬
送補助ローラ３２は上流側搬入体１，下流側搬出体３と
同一のパスラインにある。また、裏当て材２８は所定の
ケース２９にセットされてパスラインより下位にあり、
下部架台１６ａ，１６ｂの当り面もまたパスラインより
下位で、上部架台３３ａ，３３ｂの当り面はパスライン
より上方に位置し、板継ぎ溶接を行う鋼板２ａ，２ｂが
パスラインにそって通過するようにしてある。[Description of operation] Next, a plate joint welding operation will be explained based on the above embodiment. In the initial state, the longitudinal axes of the rotating pedestal 7 and the movable pedestal 11 are perpendicular to the line, and the conveyance auxiliary roller 32 is on the same path line as the upstream loading body 1 and the downstream loading body 3. Further, the backing material 28 is set in a predetermined case 29 and is located below the pass line,
The contact surfaces of the lower mounts 16a and 16b are also located below the pass line, and the contact surfaces of the upper mounts 33a and 33b are located above the pass line, and the steel plates 2a and 2b to be subjected to plate joint welding pass along the pass line. It's like this.
【００２８】上流側搬入体１上に片面溶接に適した継手
形状に組み立てられた鋼板２ａ，２ｂをセットする。そ
して、まず操作盤４９より鋼板２ａの板厚，鋼板２ｂの
板厚，図１１，図１２，図１３で示す何れかの継手形式
、および、部材セットを入力する。Steel plates 2a and 2b assembled into a joint shape suitable for single-sided welding are set on the upstream carry-in body 1. First, from the operation panel 49, the plate thickness of the steel plate 2a, the plate thickness of the steel plate 2b, one of the joint types shown in FIGS. 11, 12, and 13, and the member set are input.
【００２９】この状態で作業を開始し、継手形状に組み
立てられた鋼板２ａ，２ｂを搬送補助ローラ３２に搬入
する。鋼板２ａと２ｂの継手形状がライン、即ち、架台
間隙１５，３４に対して斜交していることから、継手形
状の先行部分が上記間隙１５と３４の間に至ると、例え
ば、光電スイッチＳ１がこの継手形状、つまり、開先を
検知する。この検知信号により上流側搬入体１は停止し
、鋼板２ａ，２ｂの搬送を中断する。そして、オーバー
ランした分は上記移動架台１１の下流側移動調整によっ
て補正され、光電スイッチＳ１が開先を検知した状態に
なる。光電スイッチＳ１による信号がシーケンス制御さ
れ、ギャードモータ１０の駆動で旋回架台７がゆっくり
と旋回し、光電スイッチＳ２，Ｓ３の順で全ての光電ス
イッチが開先を検知したアンド信号で旋回架台７は停止
する。In this state, work is started, and the steel plates 2a and 2b assembled into a joint shape are carried into the conveyance auxiliary roller 32. Since the joint shape of the steel plates 2a and 2b is a line, that is, oblique to the frame gaps 15 and 34, when the leading part of the joint shape reaches between the gaps 15 and 34, for example, the photoelectric switch S1 detects the shape of this joint, that is, the groove. This detection signal causes the upstream carry-in body 1 to stop and interrupt the conveyance of the steel plates 2a and 2b. Then, the amount of overrun is corrected by adjusting the downstream movement of the movable frame 11, and the photoelectric switch S1 becomes in a state in which the groove is detected. The signal from the photoelectric switch S1 is sequence-controlled, and the rotating frame 7 slowly rotates by driving the geared motor 10, and the rotating frame 7 stops at the AND signal when all the photoelectric switches detect the groove in the order of the photoelectric switches S2 and S3. do.
【００３０】上記全ての光電スイッチＳ１，Ｓ２，Ｓ３
が開先を検知したアンド信号により図５に示すトーチ３
９と光電スイッチＳ１，Ｓ２，Ｓ３間の距離を補正する
ため、ギャードモータ１３を駆動して架台１１を上流方
向に一定距離移動させてトーチ３９の直下に溶接開先を
合わせる。All of the above photoelectric switches S1, S2, S3
The torch 3 shown in Fig. 5 is activated by the AND signal when the groove is detected.
In order to correct the distance between 9 and the photoelectric switches S1, S2, and S3, the guard motor 13 is driven to move the pedestal 11 a certain distance upstream to align the welding groove directly below the torch 39.
【００３１】次に、ギャードモータ１７，スクリュージ
ャッキ１８が働き、下部架台１６ａ，１６ｂがキーイン
された継手形式に応じて上昇し、当り面が鋼板２ａ，２
ｂに対して各別に当接する。例えば、図１１の下面合わ
せの場合は各下部架台１６ａ，１６ｂの当り面はパスラ
インより若干上方で停止し、また、図１２の上面合わせ
の場合には上流側の下部架台１６ａの当り面はパスライ
ンより若干上方で停止するが、下流側の下部架台１６ｂ
の当り面は両鋼板２ａ，２ｂの肉厚さ分だけそれより上
方で停止する。また、図１３で示す板厚中心合わせの場
合には、上流側の下部架台１６ａの当り面はパスライン
より若干上方で停止し、下流側の下部架台１６ｂの当り
面は、両鋼板２ａ，２ｂの肉厚差の１／２分だけそれよ
り上昇した位置で停止する。Next, the guard motor 17 and the screw jack 18 are operated, and the lower frames 16a and 16b are raised according to the type of joint keyed in, so that the contact surfaces are aligned with the steel plates 2a and 2.
Abut against b separately. For example, in the case of bottom-to-bottom alignment in FIG. 11, the contact surfaces of the lower frames 16a and 16b stop slightly above the pass line, and in the case of top-to-bottom alignment in FIG. It stops slightly above the pass line, but the lower pedestal 16b on the downstream side
The contact surface stops above the steel plates 2a and 2b by the thickness of the steel plates 2a and 2b. In addition, in the case of plate thickness center alignment shown in FIG. 13, the contact surface of the upstream lower mount 16a stops slightly above the pass line, and the contact surface of the downstream lower mount 16b It stops at a position that is higher than that by 1/2 of the difference in wall thickness.
【００３２】下部架台１６ａ，１６ｂの位置決めが完了
した信号により、シーケンス制御される油圧シリンダ３
５が働き、両上部架台３３ａ，３３ｂが下降し、その当
り面が鋼板２ａ，２ｂの上面に各別に当接され、鋼板２
ａ，２ｂは夫々上下の架台１６ａと３３ａ，および、１
６ｂと３３ｂとの間に各別に挟着固定せしめられる。The hydraulic cylinder 3 is sequence-controlled by a signal indicating that the positioning of the lower frames 16a and 16b has been completed.
5 acts, both upper frames 33a and 33b are lowered, and their abutting surfaces abut against the upper surfaces of steel plates 2a and 2b, respectively, and the steel plates 2
a and 2b are the upper and lower frames 16a and 33a, and 1
They are individually clamped and fixed between 6b and 33b.
【００３３】開先が上述のように定位置にセットされた
信号により、上記ホース３５に高圧流体が送入されてこ
のホース３５が図６に示すように膨張し、台座２７を案
内ピン２６を案内として上昇させ、裏当て材２８を開先
を構成する鋼板２ａ，２ｂ間に橋架的に密接させる。図
６の場合は下面合わせであるが、図１２，図１３のよう
な上面合わせや板厚中心合わせの場合には、受座２２の
傾きと支持座２３の首振り作用によって裏当て材２８は
開先部に密接される。In response to the signal indicating that the bevel is set in a fixed position as described above, high pressure fluid is supplied to the hose 35, and the hose 35 expands as shown in FIG. It is raised as a guide, and the backing material 28 is brought into close contact between the steel plates 2a and 2b forming the groove like a bridge. In the case of FIG. 6, the bottom surface is aligned, but in the case of top surface alignment or plate thickness center alignment as shown in FIGS. 12 and 13, the backing material 28 is Closely attached to the groove.
【００３４】上述のように、上，下部架台１６ａ，３３
ａと１６ｂ，３３ｂとによる鋼板２ａ，２ｂの拘束、裏
当て材２８の密接が完了し、溶接施工が可能な状態であ
る旨をマンマシンインターフェイスにより作業者に知ら
せ、次の入力を待つ。作業者が溶接長さ、溶接トーチ３
９を確認してスタート位置にセットした状態で溶接開始
を入力する。油圧による拘束力，流体圧による裏当て材
２８の密接状態，シールドガス圧，冷却水圧、および、
溶接機入力を確認後、入力板厚と溶接長さに従い前述の
機能を制御しながら順次溶接を行う。As mentioned above, the upper and lower frames 16a, 33
The operator is informed through the man-machine interface that the restraint of the steel plates 2a and 2b by the steel plates 16b and 33b and the close contact of the backing material 28 have been completed, and that welding is possible, and the operator waits for the next input. The operator measures the welding length and welding torch 3.
Check 9 and set it to the start position, then input the command to start welding. restraining force due to hydraulic pressure, tightness of the backing material 28 due to fluid pressure, shielding gas pressure, cooling water pressure, and
After confirming the welding machine input, welding is performed sequentially while controlling the above-mentioned functions according to the input plate thickness and welding length.
【００３５】例えば、板厚が１５ｍｍの場合には３回の
積層を行い、スパッター除去位置に溶接トーチ３９を移
動してかき落し爪５６ａ，５６ｂによってスパッターを
除去したのち、溶接が完了したことを作業者に知らせる
。作業者はヒード外観を確認したのち、リセットを入力
すると本装置は初期状態に復帰し、対象部材を搬出し次
の入力待機状態に入る。For example, when the plate thickness is 15 mm, lamination is performed three times, the welding torch 39 is moved to the spatter removal position, and the spatter is removed by scraping claws 56a and 56b, and then the welding is completed. Inform workers. After confirming the appearance of the heat, the operator inputs a reset button, and the device returns to its initial state, carries out the target member, and enters a state of standby for the next input.
【００３６】[0036]
【発明の効果】上述のように本発明の構成によれば、次
のような効果が得られる。
（ａ）継手位置の検知、溶接トーチと開先の芯合わせが
自動的に行える。
（ｂ）あらゆる継手形式に対応した鋼板の拘束，裏当て
材の密接が自動的に行え、片面溶接が無人化される。
（ｃ）裏当て材などの消耗材の変換作業を除き、無監視
溶接が可能である。According to the configuration of the present invention as described above, the following effects can be obtained. (a) Detection of joint position and alignment of welding torch and groove can be performed automatically. (b) Steel plate restraint and backing material can be automatically tightened for all types of joints, making single-sided welding unmanned. (c) Unsupervised welding is possible, except for the conversion of consumable materials such as backing materials.
【図１】本発明装置の側面図である。FIG. 1 is a side view of the device of the present invention.
【図２】本発明装置の一部切欠正面図である。FIG. 2 is a partially cutaway front view of the device of the present invention.
【図３】本発明装置の正面図である。FIG. 3 is a front view of the device of the present invention.
【図４】旋回架台の平面図である。FIG. 4 is a plan view of the rotating pedestal.
【図５】裏当て材部と開先検知を示す一部切欠正面図で
ある。FIG. 5 is a partially cutaway front view showing the backing material portion and groove detection.
【図６】裏当て材と溶接トーチの芯合わせ状態の一部切
欠正面図である。FIG. 6 is a partially cutaway front view of the backing material and the welding torch in a state where they are aligned.
【図７】スパッター除去部の一部切欠正面図である。FIG. 7 is a partially cutaway front view of the sputter removal section.
【図８】図７の一部切欠平面図である。FIG. 8 is a partially cutaway plan view of FIG. 7;
【図９】板継ぎ形状を示す鋼板の平面図である。FIG. 9 is a plan view of a steel plate showing a plate joint shape.
【図１０】板継ぎ鋼板を使用した橋梁箱桁の斜視図であ
る。FIG. 10 is a perspective view of a bridge box girder using plate-jointed steel plates.
【図１１】下面合わせの継手形式を示す説明図である。FIG. 11 is an explanatory diagram showing a joint type for bottom-to-bottom matching.
【図１２】上面合わせの継手形式を示す説明図である。FIG. 12 is an explanatory diagram showing a top-to-bottom joint type.
【図１３】板厚中心合わせの継手形式を示す説明図であ
る。FIG. 13 is an explanatory diagram showing a joint type for centering plate thickness.
Ａ 板継ぎ鋼板 １ 上流側搬入体 ２ａ 鋼板 ２ｂ 鋼板 ３ 下流側搬出体 ６ 軸受 ７ 旋回架台 ８ 転輪 ９ 案内レール １０ ギャードモータ １１ 移動架台 １２ リニアガイド １３ ギャードモータ １５ 間隙 １６ａ 下部架台 １６ｂ 下部架台 １７ ギャードモータ １８ スクリュージャッキ ２８ 裏当て材 ２９ ケース ３２ 搬送補助ローラ ３３ａ 上部架台 ３３ｂ 上部架台 ３４ 間隙 ３５ 油圧シリンダ ３７ 台車 ３８ ギャードモータ ３９ 溶接トーチ ４０ 揺動ベース ４５ 台車 ４６ 溶接ワイヤドラム ４９ 操作盤 Ｓ１ 光電スイッチ ５６ａ かき落し爪 ５６ｂ かき落し爪 A Plate joint steel plate 1 Upstream loading body 2a Steel plate 2b Steel plate 3 Downstream delivery body 6 Bearing 7 Swivel mount 8 Rolling wheels 9 Guide rail 10 Guarded motor 11 Movable stand 12 Linear guide 13 Guarded motor 15 Gap 16a Lower pedestal 16b Lower pedestal 17 Guarded motor 18 Screw jack 28 Backing material 29 Case 32 Conveyance auxiliary roller 33a Upper pedestal 33b Upper pedestal 34 Gap 35 Hydraulic cylinder 37 Trolley 38 Guarded motor 39 Welding torch 40 Swing base 45 Trolley 46 Welding wire drum 49 Operation panel S1 Photoelectric switch 56a Scraping claw 56b scraping claw
Claims (1)
送する上流側搬入体と下流側搬出体との間に、水平姿勢
の旋回架台を配設するとともに、この旋回架台上に該旋
回架台の軸線方向と直交する方向に水平移動する移動架
台を乗載せしめ、この移動架台上に、上記旋回架台の軸
線にそい所要の間隙を介して各別に昇降しうる２個の下
部架台を搭載し、この両下部架台間の間隙部に、鋼板の
板継ぎ形式に対応して板継ぎ鋼板間に密接する裏当て材
を上下動可能に配設し、更に、上記移動架台の両側に、
上記上流側搬入体と下流側搬出体と同レベルのパスライ
ンをもつ上記板継ぎ鋼板の搬送補助ローラ群列を配設せ
しめ、一方、上記移動架台には、上記両下部架台の上方
に対応して配設され各別に昇降する２個の上部架台を搭
載し、この何れか一方の上部架台には、両上部架台間の
間隙の長手方向中心線にそって水平往復移動する溶接ト
ーチをとりつけるとともに、該溶接トーチの移動を邪魔
しない間隙部に上記鋼板の板継ぎ開先を検知する複数の
センサーを適当の間隔を介して並設したことを特徴とす
る鋼板の板継ぎ溶接装置。Claim 1: A rotating frame in a horizontal position is disposed between an upstream carrying-in body and a downstream carrying-out body that transport steel plates assembled in a plate joint shape, and the rotating frame is mounted on the rotating frame. A movable frame that moves horizontally in a direction perpendicular to the axial direction is mounted on the movable frame, and two lower frames that can be individually raised and lowered along the axis of the rotating frame with a required gap are mounted on the movable frame, In the gap between both of the lower frames, a backing material that fits closely between the plate-joined steel plates is arranged in a vertically movable manner in accordance with the plate-joining type of the steel plates, and furthermore, on both sides of the movable frame,
A group of conveyance auxiliary rollers for the spliced steel plate having a pass line at the same level as the upstream carrying-in body and the downstream carrying body are disposed, and the movable pedestal is provided with a row of conveying auxiliary rollers that correspond to the upper part of both the lower pedestals. The welding torch is mounted on one of the upper frames and moves horizontally back and forth along the longitudinal center line of the gap between the two upper frames. An apparatus for welding steel sheets together, characterized in that a plurality of sensors for detecting the joining groove of the steel sheets are arranged in parallel at appropriate intervals in a gap that does not impede movement of the welding torch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16635291A JPH074679B2 (en) | 1991-06-11 | 1991-06-11 | Steel plate welding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16635291A JPH074679B2 (en) | 1991-06-11 | 1991-06-11 | Steel plate welding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04367395A true JPH04367395A (en) | 1992-12-18 |
| JPH074679B2 JPH074679B2 (en) | 1995-01-25 |
Family
ID=15829792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16635291A Expired - Lifetime JPH074679B2 (en) | 1991-06-11 | 1991-06-11 | Steel plate welding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH074679B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008264863A (en) * | 2007-04-25 | 2008-11-06 | Kobe Steel Ltd | One-side welding equipment |
| JP2009090336A (en) * | 2007-10-09 | 2009-04-30 | Kobe Steel Ltd | Backing device and one-side welding machine |
| CN102211265A (en) * | 2011-06-16 | 2011-10-12 | 吴江市德菱电梯配套有限公司 | Fastening component used for welding staircase tensioning wheel bracket |
| ITPD20100277A1 (en) * | 2010-09-14 | 2012-03-15 | Fincantieri Cantieri Navali It | WELDING SYSTEM FOR JOINTS ON SINGLE SIDE WITH CERAMIC REAR PROTECTION |
| ITPD20100276A1 (en) * | 2010-09-14 | 2012-03-15 | Fincantieri Cantieri Navali It | WELDING SYSTEM FOR JOINTS ON SINGLE SIDE WITH CERAMIC REAR PROTECTION |
| CN104308418A (en) * | 2014-09-30 | 2015-01-28 | 广西大学 | Air conditioner motor support frame splicing welding clamp |
| CN112388193A (en) * | 2020-11-03 | 2021-02-23 | 安徽腾达钢构有限公司 | Steel frame assembly |
-
1991
- 1991-06-11 JP JP16635291A patent/JPH074679B2/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008264863A (en) * | 2007-04-25 | 2008-11-06 | Kobe Steel Ltd | One-side welding equipment |
| JP2009090336A (en) * | 2007-10-09 | 2009-04-30 | Kobe Steel Ltd | Backing device and one-side welding machine |
| ITPD20100277A1 (en) * | 2010-09-14 | 2012-03-15 | Fincantieri Cantieri Navali It | WELDING SYSTEM FOR JOINTS ON SINGLE SIDE WITH CERAMIC REAR PROTECTION |
| ITPD20100276A1 (en) * | 2010-09-14 | 2012-03-15 | Fincantieri Cantieri Navali It | WELDING SYSTEM FOR JOINTS ON SINGLE SIDE WITH CERAMIC REAR PROTECTION |
| CN102211265A (en) * | 2011-06-16 | 2011-10-12 | 吴江市德菱电梯配套有限公司 | Fastening component used for welding staircase tensioning wheel bracket |
| CN104308418A (en) * | 2014-09-30 | 2015-01-28 | 广西大学 | Air conditioner motor support frame splicing welding clamp |
| CN112388193A (en) * | 2020-11-03 | 2021-02-23 | 安徽腾达钢构有限公司 | Steel frame assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH074679B2 (en) | 1995-01-25 |
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