CN109514152B - Pipeline end cover welding equipment - Google Patents
Pipeline end cover welding equipment Download PDFInfo
- Publication number
- CN109514152B CN109514152B CN201811401911.XA CN201811401911A CN109514152B CN 109514152 B CN109514152 B CN 109514152B CN 201811401911 A CN201811401911 A CN 201811401911A CN 109514152 B CN109514152 B CN 109514152B
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- rectangular base
- fixedly connected
- sliding block
- electronic
- linear motor
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- 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
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- 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
Abstract
The invention discloses pipeline end cover welding equipment which comprises a rectangular base and a fixing device arranged at one end of the rectangular base; the pipeline end cover welding equipment also comprises a hoisting device arranged on the upper surface of the rectangular base and a welding device arranged on the side surface of the hoisting device, a pipeline to be welded can be stably fixed under the action of the fixing device, the end cover can be adjusted at any angle under the action of the hoisting device, and a welding handle can be fixed and welded with a certain track under the action of the welding device; the rectangular base lower surface four corners department is equipped with removes the wheel, removes wheel and rectangular base fixed connection, and rectangular base one end is equipped with the balancing weight, balancing weight and rectangular base fixed connection, and the rectangular base upper surface is equipped with the controller, controller and rectangular base fixed connection, and controller one side is equipped with power source, power source and rectangular base fixed connection. The invention has the advantages of simple structure and strong practicability.
Description
Technical Field
The invention relates to pipeline welding equipment, in particular to pipeline end cover welding equipment.
Background
The existing connecting pipe coil pipe or large-scale pipeline needs operator auxiliary equipment to press the connecting pipe or the large-scale pipeline when in tooling operation, the end cover is easy to fall off in the welding process, defective products are caused, the labor intensity of operators is high, and potential safety hazards of clamping hands exist in the working process. In addition, when welding, the welding is carried out by basically holding the welding handle, the welding quality is not good as that of a machine, and if a relatively stable welding auxiliary device can be designed, the welding quality can be improved.
The conventional welding auxiliary device, for example, patent No. 201810129912.7, entitled pipe supporting device, has a structure that can only perform fixed welding on small pipes, but is very inconvenient for heavy pipes.
Disclosure of Invention
The invention aims to solve the problems and designs a pipeline end cover welding device.
The technical scheme of the invention is that the device comprises a rectangular base and a fixing device arranged at one end of the rectangular base; the pipeline end cover welding equipment also comprises a hoisting device arranged on the upper surface of the rectangular base and a welding device arranged on the side surface of the hoisting device, a pipeline to be welded can be stably fixed under the action of the fixing device, the end cover can be adjusted at any angle under the action of the hoisting device, and a welding handle can be fixed and welded with a certain track under the action of the welding device; the rectangular base lower surface four corners department is equipped with removes the wheel, removes wheel and rectangular base fixed connection, and rectangular base one end is equipped with the balancing weight, balancing weight and rectangular base fixed connection, and the rectangular base upper surface is equipped with the controller, controller and rectangular base fixed connection, and controller one side is equipped with power source, power source and rectangular base fixed connection.
The fixing device comprises a rectangular opening arranged on the side surface of the rectangular base, a rectangular slide way is arranged on one side of the rectangular opening and is fixedly connected with the rectangular base, a vertical partition plate is arranged at the center of the lower surface of the rectangular base and is fixedly connected with the rectangular base, a linear motor I is arranged on the side surface of the vertical partition plate and is fixedly connected with the vertical partition plate; the improved sliding box is characterized in that a sliding box body is arranged in the rectangular slide way, the sliding box body is in sliding connection with the rectangular slide way, one end of the sliding box body is fixedly connected with a linear motor, the upper surface of the sliding box body is provided with a small opening, lower surface end of the sliding box body is provided with a linear motor II, the linear motor II is provided with a plurality of linear motors and corresponds to the small opening in position, two telescopic ends of the linear motor are provided with a mounting box I, lower surface of the mounting box is fixedly connected with the upper ends of the linear motors, one side surface of the mounting box is provided with a vertical opening, a sliding block is arranged in the vertical opening, the sliding block is in sliding connection with the vertical opening, lower surface end of the sliding block is provided with a linear motor III, three upper ends of the linear motors.
The hoisting device comprises a first groove arranged in the center of the upper surface of the rectangular base, a first rack is arranged in the first groove, the first rack is fixedly connected with the first groove, a first electronic sliding block is arranged in the first groove, the first electronic sliding block is slidably connected with the first groove, a driving end of the first electronic sliding block is mutually meshed with the first rack, a first electronic telescopic rod is arranged on the upper surface of the first electronic sliding block, and the lower end of the first electronic telescopic rod is connected with a first mounting box in an inserting manner; rectangular base upper surface one end is equipped with the fixing base, fixing base and rectangular base fixed connection, and the fixing base upper surface is equipped with electron telescopic link two, and two lower extremes of electron telescopic link are connected with the fixing base cartridge, and two upper ends of electron telescopic link are equipped with the circular slab, and circular slab one end is connected with two cartridges of electron telescopic link, and the circular slab other end is connected with an upper end cartridge of electron telescopic link, and the circular slab side surface is equipped with the electrodynamic steel sheet magnetism piece, and the electrodynamic steel sheet magnetism piece is inhaled with circular slab fixed connection.
The welding device comprises an annular groove arranged at the outer ring of the circular plate, the annular groove is fixedly connected with the circular plate, a second rack is arranged in the annular groove, a second electronic sliding block is arranged in the annular groove and is slidably connected with the annular groove, a second electronic sliding block driving end is fixedly connected with the second rack, two side surfaces of the second electronic sliding block are provided with a second mounting box, the upper surface of the second mounting box is provided with a first stepping motor, a rotating end of the first stepping motor is provided with a welding handle support, and the welding handle support is fixedly connected with the first stepping motor.
And a pressure sensor is arranged on the upper surface of the first mounting box and is fixedly connected with the first mounting box.
And the other end of the welding handle support is provided with a first inductor.
The signal input end of the linear motor I, the linear motor II, the linear motor III, the electronic sliding block I, the electronic sliding block II, the electronic telescopic rod I, the electronic telescopic rod II, the electric steel plate magnetic attraction block and the signal input end of the stepping motor I are electrically connected with the signal output end of the controller.
The linear motor I, the linear motor II, the linear motor III, the electronic sliding block I, the electronic sliding block II, the electronic telescopic rod I, the electronic telescopic rod II, the electric steel plate magnetic attraction block and the power input end of the stepping motor I are electrically connected with the power output end of the power interface.
The pipeline end cover welding equipment manufactured by the technical scheme of the invention can stably fix the pipeline to be welded under the action of the fixing device and can be adjusted to a certain extent according to the special structure of the pipeline. The end cover can be adjusted at any angle under the action of the hoisting device until the welding work at the later stage is facilitated. The welding handle can be fixed and welded with a certain track under the action of the welding device, so that the aim of improving the welding quality is fulfilled.
Drawings
FIG. 1 is a schematic structural view of a pipe end cover welding apparatus according to the present invention;
FIG. 2 is a schematic view of a weld holder bracket according to the present invention;
FIG. 3 is a schematic view of a welding apparatus according to the present invention;
FIG. 4 is a schematic view of the fastening device of the present invention;
FIG. 5 is a schematic view of a lifting device according to the present invention;
in the figure, 1, a rectangular base; 2. a moving wheel; 3. a balancing weight; 4. a controller; 5. a power interface; 6. a rectangular opening; 7. a rectangular slideway; 8. a vertical partition; 9. a linear motor I; 10. a sliding box body; 11. a small opening; 12. a linear motor II; 13. mounting a first box; 14. a vertical opening; 15. a slider; 16. a linear motor III; 17. an auxiliary fixing block; 18. a first groove; 20. A first electronic slider; 21. a first electronic telescopic rod; 22. a fixed seat; 23. a second electronic telescopic rod; 24. a circular plate; 25. an electric steel plate magnetic block; 26. an annular groove; 27. a second rack; 28. a second electronic slider; 29. mounting a second box; 30. a first stepping motor; 31. a welding handle bracket; 32. a pressure sensor; 33. and a first inductor.
Detailed Description
The invention is described in detail below with reference to the drawings, as shown in fig. 1-5.
A pipeline end cover welding device comprises a rectangular base 1 and a fixing device arranged at one end of the rectangular base 1; the pipeline end cover welding equipment also comprises a hoisting device arranged on the upper surface of the rectangular base 1 and a welding device arranged on the side surface of the hoisting device, a pipeline to be welded can be stably fixed under the action of the fixing device, the end cover can be adjusted at any angle under the action of the hoisting device, and a welding handle can be fixed and welded with a certain track under the action of the welding device; the four corners of the lower surface of the rectangular base 1 are provided with moving wheels 2, the moving wheels 2 are fixedly connected with the rectangular base 1, one end of the rectangular base 1 is provided with a balancing weight 3, the balancing weight 3 is fixedly connected with the rectangular base 1, the upper surface of the rectangular base 1 is provided with a controller 4, the controller 4 is fixedly connected with the rectangular base 1, one side of the controller 4 is provided with a power supply interface 5, and the power supply interface 5 is fixedly connected with the rectangular base 1;
the fixing device comprises a rectangular opening 6 arranged on the side surface of the rectangular base 1, a rectangular slideway 7 is arranged on one side of the rectangular opening 6, the rectangular slideway 7 is fixedly connected with the rectangular base 1, a vertical partition plate 8 is arranged at the center of the lower surface of the rectangular base 1, the vertical partition plate 8 is fixedly connected with the rectangular base 1, a linear motor I9 is arranged on the side surface of the vertical partition plate 8, and the linear motor I9 is fixedly connected with the vertical partition plate 8; a sliding box body 10 is arranged in the rectangular slideway 7, the sliding box body 10 is connected with the rectangular slideway 7 in a sliding way, one end of the sliding box body 10 is fixedly connected with a first linear motor 9, the upper surface of the sliding box body 10 is provided with a small opening 11, one end of the lower surface of the sliding box body 10 is provided with a second linear motor 12, the second linear motor 12 is provided with a plurality of linear motors corresponding to the positions of the small openings 11, the telescopic end of the second linear motor 12 is provided with a first mounting box 13, the lower surface of the first mounting box 13 is fixedly connected with the upper end of the second linear motor 12, the side surface of the first mounting box 13 is provided with a vertical opening 14, a sliding block 15 is arranged in the vertical opening 14, the sliding block 15 is connected with the vertical opening 14 in a sliding way, one end of the lower surface of the sliding block 15 is provided with a third linear, the auxiliary fixing block 17 is fixedly connected with the first mounting box 13;
the hoisting device comprises a first groove 18 arranged in the center of the upper surface of the rectangular base 1, a first rack is arranged in the first groove 18, the first rack is fixedly connected with the first groove 18, a first electronic sliding block 20 is arranged in the first groove 18, the first electronic sliding block 20 is in sliding connection with the first groove 18, the driving end of the first electronic sliding block 20 is meshed with the first rack, a first electronic telescopic rod 21 is arranged on the upper surface of the first electronic sliding block 20, and the lower end of the first electronic telescopic rod 21 is connected with the first electronic sliding block 20 in an inserting manner; a fixing seat 22 is arranged at one end of the upper surface of the rectangular base 1, the fixing seat 22 is fixedly connected with the rectangular base 1, an electronic telescopic rod II 23 is arranged on the upper surface of the fixing seat 22, the lower end of the electronic telescopic rod II 23 is connected with the fixing seat 22 in an inserted manner, a circular plate 24 is arranged at the upper end of the electronic telescopic rod II 23, one end of the circular plate 24 is connected with the electronic telescopic rod II 23 in an inserted manner, the other end of the circular plate 24 is connected with the upper end of the electronic telescopic rod I21 in an inserted manner, an electric steel plate magnetic suction block 25; the welding device comprises an annular groove 26 arranged at the outer ring of the circular plate 24, the annular groove 26 is fixedly connected with the circular plate 24, a second rack 27 is arranged in the annular groove 26, a second electronic sliding block 28 is arranged in the annular groove 26, the second electronic sliding block 28 is in sliding connection with the annular groove 26, the driving end of the second electronic sliding block 28 is fixedly connected with the second rack 27, a second mounting box 29 is arranged on the side surface of the second electronic sliding block 28, a first stepping motor 30 is arranged on the upper surface of the second mounting box 29, a first welding handle support 31 is arranged at the rotating end of the first stepping motor 30, and the first welding handle support 31 is fixedly connected with the first stepping.
The upper surface of the first mounting box 13 is provided with a pressure sensor 32, and the pressure sensor 32 is fixedly connected with the first mounting box 13.
The other end of the welding handle bracket 31 is provided with a first inductor 33.
The signal input ends of the first linear motor 9, the second linear motor 12, the third linear motor 16, the first electronic sliding block 20, the second electronic sliding block 28, the first electronic telescopic rod 21, the second electronic telescopic rod 23, the electric steel plate magnetic suction block 25 and the first stepping motor 30 are electrically connected with the signal output end of the controller 4.
The power input ends of the first linear motor 9, the second linear motor 12, the third linear motor 16, the first electronic sliding block 20, the second electronic sliding block 28, the first electronic telescopic rod 21, the second electronic telescopic rod 23, the magnetic electric steel plate suction block 25 and the first stepping motor 30 are electrically connected with the power output end of the power interface 5.
In the embodiment, the pipeline to be welded can be stably fixed through the action of the fixing device, and certain adjustment can be performed according to the special structure of the pipeline. The end cover can be adjusted at any angle under the action of the hoisting device until the welding work at the later stage is facilitated. The welding handle can be fixed and welded with a certain track under the action of the welding device, so that the aim of improving the welding quality is fulfilled.
Firstly, the initial state of the hoisting device is to make the circular plate 24 in a horizontal state, an end cover to be welded is placed on the upper surface of the circular plate 24, then the controller 4 controls the magnetic attraction block 25 of the electric steel plate to work, so that the purpose of fixing the end cover on the circular plate 24 is achieved, then the whole device is pushed to a corresponding position, the controller 4 controls the first electronic sliding block 20 to slide, and meanwhile, the controller 4 controls the first electronic telescopic rod 21 and the second electronic telescopic rod 23 to stretch and retract, so that the circular plate 24 is in an upright state or at a certain angle suitable for welding.
Second step, after 24 angle adjustments of circular slab, controller 4 control linear electric motor 9 stretches out and draws back, make slip box 10 roll-off rectangle opening 6, because there is better stability when slip box 10 carries out the atress in the effect of rectangle slide 7, later controller 4 control linear electric motor two 12 extend, linear electric motor two 12 extension directly drives mounting box 13 and rises, make the lower surface that the pipeline was held up to mounting box 13 upper surface, thereby find the fixed point, make the butt joint in later stage more accurate. Then the controller 4 controls the hoisting device to place the end cover to be welded on the upper surface of the auxiliary fixing block 17, and then the controller 4 controls the linear motor III 16 to stretch and retract so as to finely adjust the gap between the pipeline and the end cover, thereby achieving the purpose of accurately adjusting the gap.
Thirdly, after the position between the end cover and the pipeline is adjusted, the welding handle is manually fixed on the welding handle support 31, the controller controls the second electronic sliding block 28 to slide, the second electronic sliding block 28 performs circular motion to adapt to the welding track, and the controller 4 controls the first stepping motor 30 to rotate through the induction of the first inductor 33, so that the welding distance is controlled.
The technical solutions described above only represent the preferred technical solutions of the present invention, and some possible modifications to some parts of the technical solutions by those skilled in the art all represent the principles of the present invention, and fall within the protection scope of the present invention.
Claims (5)
1. A pipeline end cover welding device comprises a rectangular base (1) and a fixing device arranged at one end of the rectangular base (1); the pipeline end cover welding equipment is characterized by also comprising a hoisting device arranged on the upper surface of the rectangular base (1) and a welding device arranged on the side surface of the hoisting device, wherein a pipeline to be welded can be stably fixed under the action of the fixing device; the four corners of the lower surface of the rectangular base (1) are provided with moving wheels (2), the moving wheels (2) are fixedly connected with the rectangular base (1), one end of the rectangular base (1) is provided with a balancing weight (3), the balancing weight (3) is fixedly connected with the rectangular base (1), the upper surface of the rectangular base (1) is provided with a controller (4), the controller (4) is fixedly connected with the rectangular base (1), one side of the controller (4) is provided with a power interface (5), and the power interface (5) is fixedly connected with the rectangular base (1);
the fixing device comprises a rectangular opening (6) arranged on the side surface of the rectangular base (1), a rectangular slide way (7) is arranged on one side of the rectangular opening (6), the rectangular slide way (7) is fixedly connected with the rectangular base (1), a vertical partition plate (8) is arranged at the center of the lower surface of the rectangular base (1), the vertical partition plate (8) is fixedly connected with the rectangular base (1), a linear motor I (9) is arranged on the side surface of the vertical partition plate (8), and the linear motor I (9) is fixedly connected with the vertical partition plate (8); a sliding box body (10) is arranged in the rectangular slide way (7), the sliding box body (10) is connected with the rectangular slide way (7) in a sliding manner, one end of the sliding box body (10) is fixedly connected with a first linear motor (9), a small opening (11) is arranged on the upper surface of the sliding box body (10), a second linear motor (12) is arranged at one end of the lower surface of the sliding box body (10), the second linear motor (12) is provided with a plurality of linear motors and corresponds to the small opening (11), a first mounting box (13) is arranged at the telescopic end of the second linear motor (12), the lower surface of the first mounting box (13) is fixedly connected with the upper end of the second linear motor (12), a vertical opening (14) is arranged on the side surface of the first mounting box (13), a sliding block (15) is arranged in the vertical opening (14), the sliding block (15) is connected with the vertical opening (14), the upper end of a third linear motor (16) is fixedly connected with a sliding block (15), the lower end of the third linear motor (16) is fixedly connected with a first mounting box (13), an auxiliary fixing block (17) is arranged on the side surface of the sliding block (15), and the auxiliary fixing block (17) is fixedly connected with the first mounting box (13);
the hoisting device comprises a first groove (18) arranged in the center of the upper surface of the rectangular base (1), a first rack is arranged in the first groove (18), the first rack is fixedly connected with the first groove (18), a first electronic sliding block (20) is arranged in the first groove (18), the first electronic sliding block (20) is slidably connected with the first groove (18), the driving end of the first electronic sliding block (20) is mutually meshed with the first rack, a first electronic telescopic rod (21) is arranged on the upper surface of the first electronic sliding block (20), and the lower end of the first electronic telescopic rod (21) is connected with the first electronic sliding block (20) in an inserting manner; a fixing seat (22) is arranged at one end of the upper surface of the rectangular base (1), the fixing seat (22) is fixedly connected with the rectangular base (1), a second electronic telescopic rod (23) is arranged on the upper surface of the fixing seat (22), the lower end of the second electronic telescopic rod (23) is connected with the fixing seat (22) in an inserting mode, a circular plate (24) is arranged at the upper end of the second electronic telescopic rod (23), one end of the circular plate (24) is connected with the second electronic telescopic rod (23) in an inserting mode, the other end of the circular plate (24) is connected with the upper end of the first electronic telescopic rod (21) in an inserting mode, an electric steel plate magnetic suction block (25) is arranged on the side surface of the circular plate (;
the welding device comprises an annular groove (26) arranged at the outer ring of the circular plate (24), the annular groove (26) is fixedly connected with the circular plate (24), a second rack (27) is arranged in the annular groove (26), a second electronic sliding block (28) is arranged in the annular groove (26), the second electronic sliding block (28) is slidably connected with the annular groove (26), the driving end of the second electronic sliding block (28) is fixedly connected with the second rack (27), a second mounting box (29) is arranged on the side surface of the second electronic sliding block (28), a first stepping motor (30) is arranged on the upper surface of the second mounting box (29), a first welding handle support (31) is arranged at the rotating end of the first stepping motor (30), and the first welding handle support (31) is fixedly connected with the first stepping motor (30).
2. The pipeline end cover welding device is characterized in that a pressure sensor (32) is arranged on the upper surface of the first mounting box (13), and the pressure sensor (32) is fixedly connected with the first mounting box (13).
3. A pipe end closure welding apparatus as claimed in claim 1, wherein said handle support (31) is provided at the other end with a first inductor (33).
4. The pipeline end cover welding device according to claim 1, wherein a signal input end of the linear motor I (9), the linear motor II (12), the linear motor III (16), the electronic sliding block I (20), the electronic sliding block II (28), the electronic telescopic rod I (21), the electronic telescopic rod II (23), the electric steel plate magnetic attraction block (25) and the stepping motor I (30) are electrically connected with a signal output end of the controller (4).
5. The pipeline end cover welding device according to claim 1, wherein a power input end of the linear motor I (9), the linear motor II (12), the linear motor III (16), the electronic sliding block I (20), the electronic sliding block II (28), the electronic telescopic rod I (21), the electronic telescopic rod II (23), the electric steel plate magnetic attraction block (25) and the stepping motor I (30) are electrically connected with a power output end of the power interface (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811401911.XA CN109514152B (en) | 2018-11-22 | 2018-11-22 | Pipeline end cover welding equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811401911.XA CN109514152B (en) | 2018-11-22 | 2018-11-22 | Pipeline end cover welding equipment |
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| CN109514152A CN109514152A (en) | 2019-03-26 |
| CN109514152B true CN109514152B (en) | 2020-09-22 |
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| CN201811401911.XA Active CN109514152B (en) | 2018-11-22 | 2018-11-22 | Pipeline end cover welding equipment |
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| CN110052766B (en) * | 2019-04-24 | 2020-11-17 | 浙江三宝知识产权服务有限公司 | Multi-angle adjusting and clamping device for welding special-shaped pipe fitting |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU627941A1 (en) * | 1977-04-28 | 1978-10-15 | Специальное Конструкторское Бюро Треста "Ленинградоргстрой" Главленинградстроя | Device for assembling and rotating articles during welding |
| JP2000005875A (en) * | 1998-06-24 | 2000-01-11 | Nomi Kenji | Method for deciding posture of flange mounting face in reproducing device, and recording medium for reproducing device |
| CN101537558B (en) * | 2008-03-18 | 2011-12-21 | 南通中集罐式储运设备制造有限公司 | Assembling stand for assembling tank type vessel and assembling method |
| JP5693353B2 (en) * | 2011-04-27 | 2015-04-01 | 三菱電機株式会社 | Can body manufacturing apparatus and can body manufacturing method using the manufacturing apparatus |
| CN106378576B (en) * | 2015-07-31 | 2019-04-30 | 南通中集罐式储运设备制造有限公司 | Tank container assembly bench and assembly method |
| CN205147698U (en) * | 2015-11-13 | 2016-04-13 | 湖北力威汽车有限公司 | Barrel head upset welding machine |
| CN205520223U (en) * | 2016-03-11 | 2016-08-31 | 中车齐齐哈尔车辆有限公司 | Jar body head group of tank car is to device |
| CN206305685U (en) * | 2016-12-22 | 2017-07-07 | 涂仁和 | Hydraulic pressure foldable POL storage tank end socket automatic butt welding system |
| CN206883053U (en) * | 2017-05-18 | 2018-01-16 | 河南天元网架股份有限公司 | A kind of construction steel structure pipe circular seam welding device |
| CN207431636U (en) * | 2017-11-29 | 2018-06-01 | 河北成达玻璃钢有限公司 | A kind of positioner for being used for oil tank end socket and tank body welding |
| CN108453458A (en) * | 2018-04-18 | 2018-08-28 | 杜宗英 | The end socket welding processing tooling of ammonia tank |
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