CN103990932A - Device and method for aligning flange with pipe - Google Patents
Device and method for aligning flange with pipe Download PDFInfo
- Publication number
- CN103990932A CN103990932A CN201410050372.5A CN201410050372A CN103990932A CN 103990932 A CN103990932 A CN 103990932A CN 201410050372 A CN201410050372 A CN 201410050372A CN 103990932 A CN103990932 A CN 103990932A
- Authority
- CN
- China
- Prior art keywords
- flange
- pipe
- fixture
- position reference
- detector
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 19
- 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 abstract description 23
- 238000005070 sampling Methods 0.000 claims description 7
- 238000003466 welding Methods 0.000 description 10
- 238000005259 measurement Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification 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
-
- 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
- B23K37/0536—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 for maintaining flanges on tubes
-
- 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
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
- B25B11/02—Assembly jigs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B5/00—Clamps
- B25B5/14—Clamps for work of special profile
- B25B5/147—Clamps for work of special profile for pipes
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The invention provides a device and method for aligning a flange with a pipe; the device comprises the following structures; a pedestal; a clamp movably supported on the pedestal; a detector attached on the pedestal and adjacent to the clamp. The flange is clamped by the clamp and rotates with the rotation of the clamp, thereby using the detector to measure an inner surface layout of the flange and determine a flange position reference; so the clamp can move relative to the pedestal according to the flange position reference, thereby aligning the flange with the pipe.
Description
Technical field
The present invention relates to equipment and method for flange is aimed at pipe, specifically, the present invention relates to for flange being aimed at pipe with equipment and the method to the proper position of pipe by flange welding.
Background technology
By flange welding, to pipe, be the typical process during pipeline builds.In order to ensure reaching quality standards, need to before welding, flange be aimed at pipe.Flange and pipe form by operation manufacture independently, and each own dimensional tolerance separately.Although the internal diameter of flange and the external diameter of pipe are identical in the ideal case, due to foozle, slightly large for being welded to the internal diameter of the flange on pipe in reality.Therefore, need to before welding, flange and pipe suitably be aimed at.
At present for the alignment process of flange and pipe aligning is manually operated.Operator is with having estimated aligning.Utilize and manually pipe is risen to suitable position, then make flange and pipe be in a straight line.This alignment methods has several shortcomings.The first, because the internal diameter of flange is greater than the external diameter of pipe, so must keep flange not to be resisted against in any part of pipe, be namely the relation separating with pipe.Therefore it is unsettled, keeping by this way flange.For the flange using in heavy industry, especially true.The second, sight line is easily subject to the impact of human error, and therefore, because the judgement between different operators is inconsistent, in the long run, range estimation is inapplicable and insecure.Based on incorrect flange-pipe, aim to carry out welding and will cause producing unacceptable parts, thereby need to carry out operation again to pipe flange, in this process, flange is removed and further hot-working likely damages expectation pipe and flange, and except needed extra time of operation, work and cost again, also can make flange and pipe to use.
Therefore, need to provide a kind of for the two scheme of accurately, aiming at reliably meets pipeline and builds requirement by flange and pipe.
Summary of the invention
The invention provides a kind of equipment and method for flange is aimed at pipe.This equipment comprises: pedestal; Fixture, it is supported on described pedestal movably; And detector, it is attached on described pedestal and is arranged to adjacent with described fixture.Flange is installed on described fixture and along with the rotation of described fixture and rotates, thereby utilizes described detector to measure the profile of the inner surface of described flange.Based on described measurement, determine flange position reference.Then, flange position reference described in described fixture is moved with respect to described pedestal, with by described flange and described pipe in correct position alignment, to weld.
According to following detailed description, other aspects and advantages of the present invention will become apparent, and in detailed description, in the mode of example, describe creative concept of the present invention.
Accompanying drawing explanation
Below with reference to accompanying drawing, describe these and other aspect of the present invention in detail, wherein:
Fig. 1 illustrates the enlarged perspective that is welded to the flange on pipe;
Fig. 2 is the front view of Fig. 1;
Fig. 3 is according to an embodiment of the invention for flange being aimed at pipe so that the perspective view of the equipment welding;
Fig. 4 is that the equipment illustrating in Fig. 3 is being carried out flange-pipe to punctual perspective view;
Fig. 5 is the partial enlarged drawing of Fig. 4;
Fig. 6 illustrates the inner surface profile of flange and for utilizing the equipment of Fig. 3 to measure the schematic diagram of data sampling line of the profile of flange;
Fig. 7 be according to another embodiment of the invention for flange being aimed at pipe so that the perspective view of the equipment welding;
Fig. 8 illustrates the inner surface profile of flange, the outer surface profile of pipe and for utilizing the equipment of Fig. 7 to measure the schematic diagram of data sampling line of the profile of flange and pipe;
Fig. 9 illustrates equipment in Fig. 3 and Fig. 8 perspective view when flange being aimed at pipe and combine to weld;
Figure 10 is the flow chart that method of aiming at for flange-pipe according to an embodiment of the invention is shown.
The specific embodiment
Fig. 1 and Fig. 2 illustrate and treat to aim at and be welded to the flange 10 on pipe 20 with pipe 20.Due to foozle, the outer surface 24 of pipe 20 and the inner surface 14 of flange 10 may have coarse size and/or irregular shape.In this case, when flange 10 is resisted against on pipe 20, the position reference point (that is, centring 12) of flange 10 centring 22 misalignments with pipe 20 that become.Provide method and apparatus according to an embodiment of the invention that flange 10 is aimed to weld with pipe 20, referring to following detailed description.
As shown in Figure 3, according to one embodiment of present invention, for the equipment 100 that flange is aimed at pipe, comprise pedestal 110 and be arranged on the first gripper shoe 120 and the second gripper shoe 130 on pedestal 110.In pedestal 110 and the first gripper shoe 120, be respectively arranged with slide rail 112,122.The first gripper shoe 120 can be slided along Z direction with respect to pedestal 110, and the second gripper shoe 130 can be slided along Y-direction with respect to the first gripper shoe 120.Fixture (for example chuck 140) is arranged in the second gripper shoe 130, and can rotation 142 rotations around chuck 140 with respect to the second gripper shoe 130.Like this, chuck 140 can move along Y-direction and Z direction with respect to pedestal 110.In addition, chuck 140 can be with respect to pedestal 110 around rotation 142 rotations.
Checkout gear 150 is supported on pedestal 110.Checkout gear 150 has detector, and for example camera 152, and this detector is installed on checkout gear and is arranged to adjacent with chuck 140.As shown in Figure 4 and Figure 5, in use, utilize the claw 144 of chuck 140 that flange 10 is installed on chuck 140.Along with chuck 140 rotations, flange 10 rotates with respect to camera 152, and can utilize camera 152 to measure the inner surface of flange 10 or the profile of endoporus 14.According to alignment precision requirement, for example size of flange and pipe and site error, can carry out the data of measuring and obtaining along one or more predetermined data sampling line 16, as shown in Figure 6.In string 16a(Fig. 6 based on along pieces of data sample line 16, only indicate one) orientation and length, can determine the aligned position datum mark 12 of flange 10.
In the present embodiment, in the situation that the position reference point 22 of known tubes 20 is carried out, aim at, for example, with reference to the designated diameter of pipe, the position of bracing frame 170 and bracing frame with respect to the position relationship of the pedestal 110 of equipment 100.After having determined the position reference point 12 of flange 10, can draw distance and orientation between the position reference point 12 of flange 10 and the position reference point 22 of pipe 20, then by the first gripper shoe 120 and/or the second gripper shoe 130 are moved, make thus chuck 140 move preset distance along Z direction and/or Y-direction, and in the direction flange 10 is aimed at pipe 20.Then, can carry out welding so that flange is fixed on pipe, thereby complete making work.
Refer again to Fig. 3, can drive the first gripper shoe 120 and the second gripper shoe 130 with corresponding stepping motor (not shown), and equipment 100 can comprise controller 102, controller 102 is connected with the stepping motor of the second gripper shoe 130 with checkout gear 150 and the first gripper shoe 120.Measurement result from data sampling line 16 can be sent to controller 102 and processes, to determine the aligned position datum mark 12 of flange 10.Then, the position reference point 12 of controller 102 based on flange 10 also utilizes stepping motor to control the movement of the first gripper shoe 120 and the second gripper shoe 130, so that chuck 140 moves along Z direction and/or Y-direction, thereby flange 10 aimed at pipe 20.
In another embodiment, as shown in Figure 7, equipment 200 comprise with previous embodiment in pedestal 210, the first gripper shoe 220, the second gripper shoe 230 and chuck 240 that similarly mode is constructed.Equipment 200 also comprises the bracing frame 270 for support tube, to determine pipe position reference, so that with flange aligning and together with flange welding.Checkout gear 250 is arranged on pedestal 210.Checkout gear 250 has the camera 252 being attached at movably on checkout gear 250.Therefore, the position of camera 252 is adjustable, thereby except measuring the inner surface profile of flange 10, also measures the outer surface profile of pipe 20 '.Can for example, in the situation that position datum mark (centring of pipe 20 ') be unknown uses according to the equipment of the present embodiment.In this case, camera 254 is arranged to towards pipe 20 ', and along with pipe 20 ' is auxiliary with respect to bracing frame 270 rotations because being arranged on roller on bracing frame 270 272, camera 254 is measured the outer surface 24 ' of pipe 20 ' and obtains data and the measurement result to the inner surface 14 of flange 10 ' along predetermined data sampling line 26, as shown in Figure 8.Orientation based on pieces of data sample line 26, along the length of string 26a of inner surface 14 of flange 10 ' of pieces of data sample line 26 and the difference 26c between the length of the string 26b of the outer surface of pipe 20 ' and string 26a and string 26b, can determine the aligned position datum mark 12 ' of flange 10 ' and the aligned position datum mark 22 ' of pipe 20 '.
The aligned position datum mark 22 ' of aligned position datum mark based on flange 10 ' 12 ' and pipe 20 ', determine flange 10,10 ' and pipe 20 or 20 ' between position relationship.Then, mobile chuck 240 correspondingly, so that flange is aimed at pipe.When flange 10 and pipe 20 are correctly aimed at (Fig. 3) and flange 10 ' and are correctly aimed at (Fig. 7) with pipe 20 ', flange 10,10 ' with pipe 20 or 20 ' can together with along for example directions X, move, so that can correct aligned position by flange welding to pipe, as shown in Figure 9.
In flange-pipe alignment methods 500 as shown in figure 10, flange is installed to (flow chart element 510) on fixture.Measure the inner surface profile (flow chart element 520) of flange.According to the inner surface profile measuring, can determine flange position reference (flow chart element 530).Then, based on flange position reference, carry out movable clamp, so that flange is aimed at pipe.
Although below illustrate by reference to the accompanying drawings and in above detailed description in detail, embodiments of the invention be described, should think and the invention is not restricted to published embodiment.Therefore, it should be understood that can in the situation that do not depart from appended claims, institute's spirit of the present invention of recording and describing be made multiple adjustment, modification, change and replacement to the present invention.
Claims (10)
1. the equipment for flange is aimed at pipe, described equipment comprises:
Pedestal;
Fixture, it is supported on described pedestal movably, and described fixture is for being arranged on described fixture by described flange;
Support, it is for supporting described pipe;
Detector, it is attached on described pedestal and is arranged to adjacently with described fixture, and described detector is for determining flange position reference;
Wherein, described fixture moves described flange based on described flange position reference, so that described flange is aimed at described pipe.
2. equipment according to claim 1, also comprises:
The first gripper shoe, it is slidably mounted on described pedestal; And
The second gripper shoe, it is slidably mounted in described the first gripper shoe,
Wherein, described fixture is rotatably installed in described the second gripper shoe.
3. equipment according to claim 2, wherein,
Described fixture can be with respect to described detector rotation, and described detector detects the inner surface profile of described flange thus, to determine described flange position reference.
4. equipment according to claim 2, wherein,
Described detector can move with respect to described pedestal, to measure the outer surface profile of described pipe, to determine pipe position reference.
5. equipment according to claim 4, wherein,
Described support is for rotatably supporting described pipe, so that described pipe can be with respect to described detector rotation, for measuring the outer surface of described pipe, to determine described pipe position reference.
6. equipment according to claim 2, also comprises:
Controller, it is connected with described checkout gear, described the first gripper shoe and described the second gripper shoe,
Wherein, described controller moves described fixture based on described flange position reference, so that described flange is aimed at described pipe.
7. the method for flange is aimed at pipe, described method comprises:
Described flange is installed on fixture;
Measure the inner surface profile of described flange;
According to described inner surface profile, determine flange position reference;
Based on described flange position reference, move described fixture, so that described flange is aimed at described pipe.
8. method according to claim 7, wherein,
The step of measuring the inner surface profile of described flange comprises:
Detector is arranged to adjacent with described fixture;
Described fixture is rotated with respect to described detector; And
Along predetermined data sampling line, obtain the chord length of the inner surface of described flange.
9. method according to claim 7, also comprises:
Measure the outer surface profile of described pipe;
According to described outer surface profile, determine pipe position reference; And
Based on described flange position reference and described pipe position reference, move described fixture, so that described flange is aimed at described pipe.
10. method according to claim 9, wherein,
The step of measuring the outer surface profile of described pipe comprises:
Detector is arranged to adjacent with described pipe;
Described pipe is rotated with respect to described detector; And
Along predetermined data sampling line, obtain the chord length of the outer surface of described pipe.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SG201301125-9 | 2013-02-14 | ||
| SG201301125 | 2013-02-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103990932A true CN103990932A (en) | 2014-08-20 |
Family
ID=51305404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410050372.5A Pending CN103990932A (en) | 2013-02-14 | 2014-02-13 | Device and method for aligning flange with pipe |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR20140102601A (en) |
| CN (1) | CN103990932A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105033539A (en) * | 2015-07-13 | 2015-11-11 | 济南大学 | Fixture special for steel pipe flange welding |
| CN105618995A (en) * | 2014-11-11 | 2016-06-01 | 泰州市金鹰精密铸造有限公司 | Clamping device with automatic detecting function |
| CN105630004A (en) * | 2014-11-11 | 2016-06-01 | 泰州市金鹰精密铸造有限公司 | Clamping device with height automatically adjusted positioning device |
| CN109514048A (en) * | 2019-01-03 | 2019-03-26 | 上海江南船舶管业有限公司 | The double two-sided welding equipment of thick-walled pipe and technique |
| CN109732233A (en) * | 2019-03-08 | 2019-05-10 | 昆山华恒焊接股份有限公司 | Flange, straight tube group are to equipment |
| CN109822249A (en) * | 2019-03-08 | 2019-05-31 | 昆山华恒焊接股份有限公司 | To top formula flange, straight tube group to equipment |
| CN110026700A (en) * | 2019-03-08 | 2019-07-19 | 昆山华恒焊接股份有限公司 | Flange branch fastener frame and flange with this frame, straight tube group are to equipment |
| CN110560988A (en) * | 2019-07-25 | 2019-12-13 | 安徽宏源铁塔有限公司 | Semi-automatic screw rod type steel pipe, flange and connecting plate team assembling device |
| CN110744320A (en) * | 2019-11-01 | 2020-02-04 | 江国升 | Automatic cutting machine of feed type galvanized steel pipe |
| CN112872677A (en) * | 2020-12-24 | 2021-06-01 | 上海洪铺钢结构工程有限公司 | Device for welding steel structure |
| CN113714724A (en) * | 2021-08-14 | 2021-11-30 | 新奥新能源工程技术有限公司 | Welding assistor for flange welding that welding efficiency is high |
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| CN108188607A (en) * | 2017-12-21 | 2018-06-22 | 清远市广盛民防工程有限公司 | A kind of civil air defense constructions and installations casing girth welding machine |
| CN109093317A (en) * | 2018-09-26 | 2018-12-28 | 昆山华恒焊接股份有限公司 | Pipe fitting group is to equipment |
| CN109014766A (en) * | 2018-09-26 | 2018-12-18 | 昆山华恒焊接股份有限公司 | Multidimensional regulating flange branch fastener frame |
| CN110405461A (en) * | 2019-07-18 | 2019-11-05 | 舟山中远海运重工有限公司 | The tooling being aligned for flange with pipeline |
| KR102121900B1 (en) * | 2019-11-21 | 2020-06-11 | 우정엔지니어링 주식회사 | Adjustment pipe reproduction apparatus |
| CN113414555B (en) * | 2021-07-20 | 2022-08-12 | 北京国科航天发射科技有限公司 | Method for machining T-shaped welded pipe by adopting strip steel |
| CN114700736B (en) * | 2022-04-27 | 2023-01-24 | 山东宝华重工机械有限公司 | Petroleum pipeline connecting flange processing equipment |
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| JPH08174282A (en) * | 1994-12-27 | 1996-07-09 | Nittetsu Boshoku Kk | Tack welding equipment for flange to steel pipe |
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- 2014-01-17 KR KR1020140006053A patent/KR20140102601A/en not_active Application Discontinuation
- 2014-02-13 CN CN201410050372.5A patent/CN103990932A/en active Pending
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| JPH07204744A (en) * | 1994-01-21 | 1995-08-08 | Mitsubishi Electric Corp | Device for straightening cylindrical body |
| JPH08174282A (en) * | 1994-12-27 | 1996-07-09 | Nittetsu Boshoku Kk | Tack welding equipment for flange to steel pipe |
| JPH1110232A (en) * | 1997-06-18 | 1999-01-19 | Kubota Corp | External size inspection and straightening equipment for cylindrical work |
| JPH1133781A (en) * | 1997-07-18 | 1999-02-09 | Fukumoku Kogyo Kk | Method and device for manufacturing steel framed column |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105618995A (en) * | 2014-11-11 | 2016-06-01 | 泰州市金鹰精密铸造有限公司 | Clamping device with automatic detecting function |
| CN105630004A (en) * | 2014-11-11 | 2016-06-01 | 泰州市金鹰精密铸造有限公司 | Clamping device with height automatically adjusted positioning device |
| CN105033539A (en) * | 2015-07-13 | 2015-11-11 | 济南大学 | Fixture special for steel pipe flange welding |
| CN109514048A (en) * | 2019-01-03 | 2019-03-26 | 上海江南船舶管业有限公司 | The double two-sided welding equipment of thick-walled pipe and technique |
| CN110026700A (en) * | 2019-03-08 | 2019-07-19 | 昆山华恒焊接股份有限公司 | Flange branch fastener frame and flange with this frame, straight tube group are to equipment |
| CN109822249A (en) * | 2019-03-08 | 2019-05-31 | 昆山华恒焊接股份有限公司 | To top formula flange, straight tube group to equipment |
| CN109732233A (en) * | 2019-03-08 | 2019-05-10 | 昆山华恒焊接股份有限公司 | Flange, straight tube group are to equipment |
| CN109822249B (en) * | 2019-03-08 | 2023-09-08 | 昆山华恒焊接股份有限公司 | Opposite-top type flange and straight pipe assembling equipment |
| CN110560988A (en) * | 2019-07-25 | 2019-12-13 | 安徽宏源铁塔有限公司 | Semi-automatic screw rod type steel pipe, flange and connecting plate team assembling device |
| CN110744320A (en) * | 2019-11-01 | 2020-02-04 | 江国升 | Automatic cutting machine of feed type galvanized steel pipe |
| CN110744320B (en) * | 2019-11-01 | 2021-12-14 | 上海峰森机械制造有限公司 | Automatic cutting machine of feed type galvanized steel pipe |
| CN112872677A (en) * | 2020-12-24 | 2021-06-01 | 上海洪铺钢结构工程有限公司 | Device for welding steel structure |
| CN113714724A (en) * | 2021-08-14 | 2021-11-30 | 新奥新能源工程技术有限公司 | Welding assistor for flange welding that welding efficiency is high |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20140102601A (en) | 2014-08-22 |
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Application publication date: 20140820 |