CN216966591U - Automatic welding device for circular seams of steel pipes of pressure shaft - Google Patents
Automatic welding device for circular seams of steel pipes of pressure shaft Download PDFInfo
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- CN216966591U CN216966591U CN202220272432.8U CN202220272432U CN216966591U CN 216966591 U CN216966591 U CN 216966591U CN 202220272432 U CN202220272432 U CN 202220272432U CN 216966591 U CN216966591 U CN 216966591U
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- 238000003466 welding Methods 0.000 title claims abstract description 310
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 65
- 239000010959 steel Substances 0.000 title claims abstract description 65
- 230000004907 flux Effects 0.000 claims abstract description 115
- 238000000034 method Methods 0.000 claims abstract description 23
- 238000011084 recovery Methods 0.000 claims description 21
- 238000005096 rolling process Methods 0.000 claims description 11
- 238000004064 recycling Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 230000007547 defect Effects 0.000 abstract description 4
- 238000007778 shielded metal arc welding Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 5
- 239000011324 bead Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000003908 quality control method Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Abstract
The utility model provides an automatic welding device for a circular seam of a steel pipe of a pressure shaft, which comprises a walking frame structure for carrying a submerged-arc welding automatic welding system; the welding travelling frame structure is provided with a welding travelling system which is used for driving the welding travelling system to travel along the circumferential direction of the annular welding line of the inner wall of the steel pipe to be installed; the submerged arc welding automatic welding system is connected with a welding flux feeding and recovering system arranged on the welding walking frame structure; and the submerged arc welding automatic welding system, the welding walking system and the welding flux feeding and recovering system are connected with the automatic control system. The problems and the defects of the manual shielded metal arc welding commonly adopted for circular welding seams in the process of installing the steel pipe of the pressure shaft of the hydropower station are effectively solved; the automatic welding device is simple in structure and convenient to use, can improve the working environment, reduce the labor intensity, improve the welding efficiency and save the engineering cost.
Description
Technical Field
The utility model belongs to the field of construction of a pressure pipeline shaft of a hydropower station, and particularly relates to an automatic welding device for a circular seam of a steel pipe of a pressure shaft.
Background
At present, after excavation and supporting of a pressure shaft of a hydropower station are finished, pressure steel pipes are installed in sections from bottom to top, and concrete is backfilled in sections. In general, the pressure steel pipe is manufactured in a workshop in sections and then transported to a vertical shaft field for installation, and the section length can be determined according to requirements of transportation, installation and the like. The general construction method is that a hoisting facility is used for placing a pressure steel pipe underground, after leveling, correcting and butting, a plurality of common electric welders and a plurality of welders are used for arc welding with manual welding rods to perform inner and outer circular seam welding, and the traditional welding method has the following defects in the aspects of resource investment, quality control, operation environment, production efficiency, engineering cost and the like:
(1) the requirement on the operation technology of welders is high, and the welding quality control difficulty is high;
(2) the resource investment is large, the labor intensity is high, and the working environment and the labor condition are poor;
(3) the welding efficiency is low, the reliability of the welding seam is poor, and the engineering cost is relatively high.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide an automatic welding device for a circular seam of a pressure shaft steel pipe, which effectively solves the problems and the defects that the circular seam is generally subjected to manual shielded metal arc welding in the process of mounting the pressure shaft steel pipe of a hydropower station; the automatic welding device is simple in structure and convenient to use, can improve the working environment, reduce the labor intensity, improve the welding efficiency and save the engineering cost.
In order to achieve the technical features, the utility model is realized as follows: an automatic welding device for a circular seam of a pressure shaft steel pipe comprises a walking frame structure for carrying a submerged-arc welding automatic welding system; the welding traveling frame structure is provided with a welding traveling system for driving the welding traveling frame structure to travel along the circumferential direction of the annular welding line of the inner wall of the steel pipe to be installed; and the automatic submerged arc welding system is connected with a welding flux feeding and recovering system arranged on the welding walking frame structure.
The walking frame structure is formed by splicing and welding section steel materials and is formed by assembling a plurality of sections of standard trusses; when the steel pipe truss installing device is used specifically, the standard truss with the corresponding number of sections is selected according to the height of a steel pipe to be installed.
The welding travelling system comprises an upper driving wheel device fixed on one side of the top of the travelling rack structure, the upper driving wheel device comprises a top plate fixed on the inner side wall of the top of the travelling rack structure, a wheel carrier is fixed at the bottom end of the top plate, a wheel shaft is rotatably mounted on the wheel carrier through a bearing seat, a track wheel is mounted on the wheel shaft, and the track wheel and the top end of a steel pipe to be mounted form track wheel travelling fit; the wheel shaft is connected with a walking motor for driving the wheel shaft to rotate; and a lower rolling wheel is arranged on the inner side wall of the lower part of the walking frame structure, and the lower rolling wheel and the inner side wall of the installed steel pipe form rolling support matching.
The submerged arc welding automatic welding system comprises a submerged arc transverse welding machine arranged on a walking rack structure, a welding gun is arranged at the head of the submerged arc transverse welding machine, a welding wire is arranged at the center of the welding gun, and the welding wire is conveyed by an automatic wire feeder arranged on the walking rack structure; and the welding gun is matched with the flux feeding and recovering system, and the supply and recovery of the flux in the welding process are realized.
The submerged arc horizontal welding machine is connected with a welding power supply, and the welding power supply provides power for equipment and is matched with the power and the frequency of the submerged arc horizontal welding machine and the automatic wire feeder; the welding speed of the submerged arc horizontal welding machine is matched with the wire feeding speed of the automatic wire feeder.
The welding flux feeding and recovering system comprises a welding flux feeding and recovering mechanism fixed at the top of the walking frame structure; the flux feed opening of the flux feed recovery mechanism is connected with a flux feed pipe, and the tail end of the flux feed pipe is matched with a welding gun of the automatic submerged arc welding system; a welding flux hopper is arranged below the welding flux feeding pipe through a welding flux bracket; the welding flux bracket is fixedly arranged on the walking frame structure, clings to the inner wall of the installed steel pipe by means of the self weight of the walking frame structure, and slides relative to the pipe wall along with the walking of the walking frame structure; the flux hopper is positioned under the welding seam, and enables the welding seam and the welding wire to be covered by the flux to protect welding arcs.
And a welding flux recovery pipe is arranged on the side edge of the welding flux hopper, and the welding flux recovery pipe is connected with a welding flux feeding and recovering mechanism for recovering the welding flux.
And the welding flux is sent to a recovery mechanism and adopts a negative pressure type welding flux barrel.
And the automatic submerged arc welding system, the welding walking system and the welding flux feeding and recovering system are connected with the automatic control system.
The automatic control system comprises a controller, the controller is simultaneously connected with a walking motor of the welding walking system, a submerged-arc transverse welding machine of the submerged-arc welding automatic welding system, a welding power supply, an automatic wire feeder and a welding flux feeding and recycling mechanism of the welding flux feeding and recycling system, and controls the welding speed and the welding quality through an operation panel.
The utility model has the following beneficial effects:
1. by adopting the automatic welding device and the construction method, the problems and the defects of the circular welding seam commonly adopting manual shielded metal arc welding in the process of installing the hydraulic power station pressure shaft steel pipe are effectively solved; the automatic welding device is simple in structure and convenient to use, can improve the working environment, reduce the labor intensity, improve the welding efficiency and save the engineering cost.
2. The automatic welding device directly uses the upper port of the pressure steel pipe to be welded as a walking track, and the whole welding device is hung on the pipe wall of the pressure steel pipe, so that the whole welding device is driven to automatically and annularly walk along the inner wall and the outer wall of the pressure steel pipe, the welding of a circumferential weld joint is automatically realized, the walking track is not required to be additionally arranged, the structure of the automatic welding device is greatly simplified, the whole construction process is simplified, and the working efficiency is improved.
3. The automatic welding device can adapt to the automatic welding of the inner ring welding seam and the outer ring welding seam of the welding seam at the same time, is convenient and fast to install and adjust in the specific using process, and can be used for welding the other side after being conveniently adjusted after the welding of one side is finished.
4. Can be used for carrying on whole automatic welder through foretell walking frame construction, it can carry out free the assembling according to the concrete size model of penstock moreover.
5. The welding traveling system can be used for driving the whole traveling rack structure to move along the inner ring direction of the pressure steel pipe.
6. The automatic submerged-arc welding system can realize automatic submerged-arc welding and further realize girth welding of a welding seam.
7. The flux feeding and recovering system can supply the flux in the welding process, so that the submerged-arc welding process is effectively protected, and the welding quality of the submerged-arc welding is ensured.
8. The flux feeding and recovering mechanism adopts a negative pressure type flux barrel which is arranged at the top of the frame, and the flux falls into a flux hopper on the flux bracket along the guide pipe by gravity so as to cover a welding bead and a welding wire and protect welding arcs.
Drawings
The utility model is further illustrated by the following figures and examples.
Fig. 1 is a schematic view of the overall structure of the present invention.
FIG. 2 is an enlarged view of a portion A of FIG. 1 according to the present invention.
FIG. 3 is an enlarged view of portion B of FIG. 1 according to the present invention.
In the figure: the welding and walking system comprises a welding and walking system 1, a submerged arc horizontal welding machine 2, a welding flux feeding and recovering mechanism 3, an automatic wire feeder 4, backfilled concrete 5, a welding seam 6, an upper driving wheel device 7, a lower rolling wheel 8, a welding flux bracket 9, a welding flux hopper 10, a welding flux feeding pipe 11, a welding flux recovering pipe 12, a welding flux 13, a welding power supply 14, an operation welding gun 15, a welding wire 16, a steel pipe to be installed 17, an installed steel pipe 18, an operation hanging disc 19, a hanging rope 20, a submerged arc welding automatic welding system 21, a welding flux feeding and recovering system 22 and a walking frame structure 23;
Detailed Description
Embodiments of the present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1-3, an automatic welding device for a circular seam of a pressure shaft steel pipe comprises a walking frame structure 23 for carrying a submerged arc welding automatic welding system 21; the welding traveling frame structure 17 is provided with a welding traveling system 1 for driving the welding traveling frame structure to travel along the circumferential direction of the annular welding line 6 on the inner wall of the steel pipe 17 to be installed; the automatic submerged arc welding system 21 is connected with a welding flux feeding and recovering system 22 arranged on the welding walking frame structure 17; the automatic submerged arc welding system 21, the welding traveling system 1 and the flux feeding and recovering system 22 are connected with an automatic control system. The automatic welding device is simple in structure and convenient to use, can improve the working environment, reduce the labor intensity, improve the welding efficiency, save the engineering cost and be used for full-automatic welding of the circular seam of the pressure shaft steel pipe. In the specific welding process, the whole walking frame structure 23 is driven to walk along the inner wall and the outer wall of the pressure steel pipe in the annular direction by the welding walking system 1, in the walking process, the automatic welding of a welding seam is realized by the automatic submerged arc welding system 21, in the welding process, the automatic supply and recovery of welding flux are realized by the welding flux supply and recovery system 22, and the purpose of saving resources is achieved. The automatic control system can realize full automation of the whole automatic welding device, and the welding efficiency is improved while the welding quality is ensured.
Further, the walking frame structure 23 is formed by splicing and welding section steel materials and is formed by assembling a plurality of sections of standard trusses; when the steel pipe truss installing device is used specifically, the standard truss with the corresponding number of sections is selected according to the height of the steel pipe 17 to be installed. The walking frame structure 23 can be used for carrying the whole automatic welding device, and can be freely assembled according to the specific size of the pressure steel pipe.
Further, the welding traveling system 1 comprises an upper driving wheel device 7 fixed on one side of the top of the traveling frame structure 23, the upper driving wheel device 7 comprises a top plate 701 fixed on the inner side wall of the top of the traveling frame structure 23, a wheel frame 702 is fixed at the bottom end of the top plate 701, a wheel shaft 703 is rotatably installed on the wheel frame 702 through a bearing seat 704, a track wheel 705 is installed on the wheel shaft 703, and the track wheel 705 is in track wheel traveling fit with the top end of the steel pipe 17 to be installed; the wheel shaft 703 is connected with a walking motor for driving the wheel shaft to rotate; the inner side wall of the lower part of the walking frame structure 23 is provided with a lower rolling wheel 8, and the lower rolling wheel 8 and the inner side wall of the installed steel pipe 18 form rolling support matching. The welding traveling system 1 can be used for driving the whole traveling frame structure 23 to move along the inner ring direction of the pressure steel pipe. In the specific working process, the wheel shaft 703 is driven by the walking motor, the rail wheel 705 is driven by the wheel shaft 703, and the rail wheel 705 and the top end of the pressure steel pipe form rail walking coordination.
Further, the submerged arc welding automatic welding system 21 comprises a submerged arc transverse welding machine 2 arranged on a walking rack structure 23, a welding gun 15 is arranged at the head of the submerged arc transverse welding machine 2, a welding wire 16 is arranged at the center of the welding gun 15, and the welding wire 16 is conveyed by an automatic wire feeder 4 arranged on the walking rack structure 23; the welding torch 15 cooperates with a flux supply and recovery system 22 and effects the supply and recovery of flux during the welding process. The automatic submerged arc welding system 21 can realize automatic submerged arc welding and further realize girth welding of a welding seam. In the working process, the welding wires are automatically conveyed through the automatic wire feeder 4, and are automatically welded through the welding gun 15, so that the welding of the circular seam is realized.
Further, the submerged arc horizontal welding machine 2 is connected with a welding power supply 14, and the welding power supply 14 provides power for equipment, and the power and the frequency of the submerged arc horizontal welding machine 2 and the power and the frequency of the automatic wire feeder 4 are matched; the welding speed of the submerged arc horizontal welding machine 2 is matched with the wire feeding speed of the automatic wire feeder 4. The submerged arc horizontal welding machine 2 ensures the welding quality.
Further, the flux feeding and recovering system 22 comprises a flux feeding and recovering mechanism 3 fixed on the top of the traveling frame structure 23; a welding flux feeding port of the welding flux feeding and recovering mechanism 3 is connected with a welding flux feeding pipe 11, and the tail end of the welding flux feeding pipe 11 is matched with a welding gun 15 of the automatic submerged arc welding system 21; a flux hopper 10 is arranged below the flux feeding pipe 11 through a flux bracket 9; the welding flux bracket 9 is fixedly arranged on the walking frame structure 23, clings to the inner wall of the installed steel pipe 18 by means of the self weight of the walking frame structure 23, and slides relative to the pipe wall along with the walking of the walking frame structure 23; the flux hopper 10 is positioned directly below the weld 6 and causes the flux 13 to cover the weld 6 and the welding wire 16, protecting the welding arc. The flux supply and recovery system 22 can supply flux during the welding process, thereby effectively protecting the submerged arc welding process and ensuring the welding quality of the submerged arc welding. In the specific working process, the welding flux bracket is connected with the walking frame structure 23, clings to the wall of the pressure steel pipe by means of the self weight of the walking frame structure 23, and can slide relative to the pipe wall along with the walking of the walking frame structure 23. The flux feeding and recovering mechanism 3 adopts a negative pressure type flux barrel which is arranged at the top of the frame, and the flux falls into a flux hopper on a flux bracket along a guide pipe by gravity so as to cover a welding bead and a welding wire and protect welding arcs.
Further, a flux recovery pipe 12 is arranged on the side of the flux hopper 10, and the flux recovery pipe 12 is connected with a flux feeding and recovering mechanism 3 for flux recovery; the flux is sent to the recovery mechanism 3 and adopts a negative pressure type flux barrel. And further realizes the resource saving and utilization.
Further, the automatic control system comprises a controller which is simultaneously connected with the traveling motor of the welding traveling system 1, the submerged arc horizontal welding machine 2 of the submerged arc welding automatic welding system 21, the welding power supply 14, the automatic wire feeder 4 and the flux feeding and recovering mechanism 3 of the flux feeding and recovering system 22, and controls the welding speed and the welding quality through an operation panel. The automatic control system can realize full-automatic control of the whole welding process, and improves the welding quality and the automatic degree.
The concrete operation process of adopting a pressure shaft steel pipe circumferential weld automatic welder to carry out the automatic welding of power station pressure pipeline is:
firstly, according to the length of a pressure steel pipe joint, combining the diameter of the pressure steel pipe, the wall thickness of the steel pipe and the thickness requirement of backfilled concrete, a welding walking frame structure 23 is manufactured by section steel, the height of the walking frame structure 23 is matched with the length of the pipe joint, the width meets the principle that a submerged arc transverse welding machine 2, a welding flux feeding and recovering mechanism 3, a welding power supply 14 and an automatic wire feeder 4 are arranged, and the thickness mainly considers the thickness of the backfilled concrete 5 and the height of a reinforced ring so as to meet the welding requirements of the inner side and the outer side of a welding seam 6; a track wheel 705 of the driving wheel device 7 is matched with an upper port of the pressure steel pipe, and a lower rolling wheel 8 of the walking frame structure 23 is matched with the inner diameter of the pressure steel pipe; fixing a welding flux bracket 9 at the lower part of the walking frame structure 23, and fixing a welding flux hopper 10 on the welding flux bracket 9; the flux feeding and recovering mechanism 3 is arranged at the top of the walking frame structure 23, and the flux 13 is supplied and recovered through a flux feeding pipe 11 and a flux recovering pipe 12; the automatic wire feeder 4 is fixed in the middle of the walking frame structure 23 and is matched with the welding gun 15 through a welding wire 16; the submerged arc horizontal welding machine 2 is fixed at the lower part of the walking frame structure 23 and is reliably connected with the welding power supply 14; a welding power supply 14, a submerged arc horizontal welding machine 2, a welding traveling system 1 and a welding flux are sent to a recovery mechanism 3 and are integrated on an operation panel of an automatic control system, so that the centralized control of the welding system is realized;
in the specific welding process: the flux feeding recovery mechanism 3 is opened, the flux flows into the flux hopper 10 from the flux feeding pipe 11 through self weight, and automatically covers the welding seam 6 and the welding wire 16, the automatic wire feeder 4 and the submerged arc horizontal welding machine 2 are started, and the welding gun 15 is operated to start welding operation; in the welding process, the welding gun 15 swings in a certain range from top to bottom, left to right, and the welding speed is controlled to be matched with the walking, wire feeding and welding flux supply of the walking frame structure 23 so as to ensure that the welding seam is uniform and full; and after the first welding seam is finished, circularly finishing the welding for multiple times until the welding of the inner welding seam and the outer welding seam of the pressure steel pipe is finished.
Claims (10)
1. The utility model provides a pressure shaft steel pipe circumferential weld automatic welder which characterized in that: comprises a walking frame structure (23) for carrying a submerged arc welding automatic welding system (21); the welding traveling frame structure (23) is provided with a welding traveling system (1) for driving the welding traveling frame structure to travel along the circumferential direction of the annular welding line (6) of the inner wall of the steel pipe (17) to be installed; and the automatic submerged arc welding system (21) is connected with a welding flux feeding and recovering system (22) arranged on a welding walking frame structure (23).
2. The automatic welding device for the circular seam of the steel pipe of the pressure shaft according to claim 1, characterized in that the walking frame structure (23) is formed by splicing and welding section steel materials and is assembled by a plurality of sections of standard trusses; when the steel pipe truss is used specifically, the standard truss with the corresponding number of sections is selected according to the height of the steel pipe (17) to be installed.
3. The automatic welding device for the circular seams of the steel pipes in the pressure shaft according to claim 1, wherein the welding traveling system (1) comprises an upper driving wheel device (7) fixed on one side of the top of the traveling frame structure (23), the upper driving wheel device (7) comprises a top plate (701) fixed on the inner side wall of the top of the traveling frame structure (23), a wheel carrier (702) is fixed at the bottom end of the top plate (701), a wheel shaft (703) is rotatably installed on the wheel carrier (702) through a bearing block (704), a track wheel (705) is installed on the wheel shaft (703), and the track wheel (705) forms track wheel traveling fit with the top end of the steel pipe (17) to be installed; the wheel shaft (703) is connected with a walking motor for driving the wheel shaft to rotate; the inner side wall of the lower part of the walking frame structure (23) is provided with a lower rolling wheel (8), and the lower rolling wheel (8) and the inner side wall of the installed steel pipe (18) form rolling support matching.
4. The automatic welding device for the circular seam of the pressure shaft steel pipe is characterized in that the automatic submerged arc welding system (21) comprises a submerged arc horizontal welding machine (2) arranged on a walking frame structure (23), a welding gun (15) is arranged at the head part of the submerged arc horizontal welding machine (2), a welding wire (16) is arranged at the center of the welding gun (15), and the welding wire (16) is conveyed by an automatic wire feeder (4) arranged on the walking frame structure (23); the welding gun (15) is matched with a flux feeding and recovering system (22) and realizes the feeding and recovering of the flux in the welding process.
5. The automatic welding device for the circular seams of the steel pipes in the pressure shaft is characterized in that the submerged arc horizontal welding machine (2) is connected with a welding power supply (14), and the welding power supply (14) provides power for equipment and is matched with the power and the frequency of the submerged arc horizontal welding machine (2) and the automatic wire feeder (4); the welding speed of the submerged arc horizontal welding machine (2) is matched with the wire feeding speed of the automatic wire feeding machine (4).
6. The automatic welding device for the circular seams of the steel pipes in the pressure shaft according to claim 1 or 4, characterized in that the flux feeding and recovering system (22) comprises a flux feeding and recovering mechanism (3) fixed on the top of a walking frame structure (23); a welding flux feed opening of the welding flux feed recovery mechanism (3) is connected with a welding flux feed pipe (11), and the tail end of the welding flux feed pipe (11) is matched with a welding gun (15) of the submerged arc welding automatic welding system (21); a flux hopper (10) is arranged below the flux feeding pipe (11) through a flux bracket (9); the welding flux bracket (9) is fixedly arranged on the walking frame structure (23), clings to the inner wall of the installed steel pipe (18) by means of the self weight of the walking frame structure (23), and slides relative to the pipe wall along with the walking of the walking frame structure (23); the flux hopper (10) is positioned right below the welding seam (6), and enables the welding flux (13) to cover the welding seam (6) and the welding wire (16) and protect welding arcs.
7. The automatic welding device for the circular seams of the steel pipes in the pressure shaft is characterized in that a flux recovery pipe (12) is arranged on the side of the flux hopper (10), and the flux recovery pipe (12) is connected with a flux feeding and recovery mechanism (3) for flux recovery.
8. The automatic welding device for the circular seams of the steel pipes in the pressure shaft according to claim 6, characterized in that the flux feeding and recovering mechanism (3) adopts a negative pressure type flux barrel.
9. The automatic welding device for the circular seam of the steel pipe in the pressure shaft according to the claim 1 is characterized in that the automatic submerged arc welding system (21), the welding traveling system (1) and the welding flux feeding and recovering system (22) are connected with an automatic control system.
10. The automatic welding device for the circular seam of the steel pipe in the pressure shaft according to the claim 8 is characterized in that the automatic control system comprises a controller which is simultaneously connected with a walking motor of the welding walking system (1), a submerged arc horizontal welding machine (2) of the submerged arc welding automatic welding system (21), a welding power supply (14), an automatic wire feeder (4) and a welding flux feeding and recycling mechanism (3) of the welding flux feeding and recycling system (22), and controls the welding speed and the welding quality through an operation panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220272432.8U CN216966591U (en) | 2022-02-10 | 2022-02-10 | Automatic welding device for circular seams of steel pipes of pressure shaft |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220272432.8U CN216966591U (en) | 2022-02-10 | 2022-02-10 | Automatic welding device for circular seams of steel pipes of pressure shaft |
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| CN202220272432.8U Active CN216966591U (en) | 2022-02-10 | 2022-02-10 | Automatic welding device for circular seams of steel pipes of pressure shaft |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114346384A (en) * | 2022-02-10 | 2022-04-15 | 新疆兵团水利水电工程集团有限公司 | Automatic welding device for circular seam of pressure shaft steel pipe and construction method |
| CN117817081A (en) * | 2024-01-09 | 2024-04-05 | 中交第三航务工程局有限公司 | Wind-powered electricity generation single pile lug welding set |
-
2022
- 2022-02-10 CN CN202220272432.8U patent/CN216966591U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114346384A (en) * | 2022-02-10 | 2022-04-15 | 新疆兵团水利水电工程集团有限公司 | Automatic welding device for circular seam of pressure shaft steel pipe and construction method |
| CN114346384B (en) * | 2022-02-10 | 2023-09-08 | 新疆兵团水利水电工程集团有限公司 | Automatic welding device for circumferential seams of steel pipes of pressure vertical shafts and construction method |
| CN117817081A (en) * | 2024-01-09 | 2024-04-05 | 中交第三航务工程局有限公司 | Wind-powered electricity generation single pile lug welding set |
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