CN215880278U - Gantry automatic submerged arc welding machine - Google Patents
Gantry automatic submerged arc welding machine Download PDFInfo
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- CN215880278U CN215880278U CN202122492504.8U CN202122492504U CN215880278U CN 215880278 U CN215880278 U CN 215880278U CN 202122492504 U CN202122492504 U CN 202122492504U CN 215880278 U CN215880278 U CN 215880278U
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- 238000003466 welding Methods 0.000 title claims abstract description 185
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 230000004907 flux Effects 0.000 claims description 49
- 230000000149 penetrating effect Effects 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 12
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 8
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 8
- 241001330002 Bambuseae Species 0.000 claims description 8
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 8
- 239000011425 bamboo Substances 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 4
- 238000010030 laminating Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 13
- 238000004140 cleaning Methods 0.000 abstract description 2
- 230000001737 promoting effect Effects 0.000 abstract 1
- 238000004804 winding Methods 0.000 abstract 1
- 238000004064 recycling Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a gantry automatic submerged arc welding machine, which comprises a gantry, wherein a coil drum for winding welding wires is fixedly arranged at the top end of the gantry, a controller is fixedly connected to the lower side of the gantry, two sliding seats II driven by a motor are respectively and fixedly connected to the two lower ends of the gantry, sliding rails are respectively and slidably connected to the lower surfaces of the two sliding seats II in a limiting manner, the sliding rails are respectively and fixedly connected to the ground, the left end and the right end of the gantry are respectively and slidably connected to a sliding seat I driven by the motor, a fixed column is respectively and fixedly connected to the outer sides of the two sliding seats I, a fixed seat is respectively and fixedly connected to the lower end of the fixed column, a welding machine body is respectively and fixedly connected to the lower surface of the fixed seat, the welding machine body, the sliding seats I and the sliding seats II are electrically connected with the controller, the welding wires in the coil drum are in transmission connection with the welding machine body, the effect of automatically absorbing redundant welding wires is achieved, and the labor wasted by later manual cleaning and collecting is avoided, reach the stability effect when promoting the welding of welding machine body simultaneously.
Description
Technical Field
The utility model relates to the technical field of submerged arc welding machines, in particular to a gantry automatic submerged arc welding machine.
Background
The gantry type automatic submerged arc welding machine is mainly used for submerged arc welding of H-shaped steel, the welding automation degree is high, and the operation is simple and convenient; the flux is fed by gravity, and the two welding heads can weld simultaneously and weld independently.
The automatic submerged arc welding machine of current longmen exists when using, and the poor stability of welding machine just is difficult to quick calibration, leads to welding quality unstable and the problem that work efficiency is low, and the welding flux is unrestrained simultaneously, needs artifical later stage to clear up the collection to unnecessary welding flux, causes unnecessary labour's extravagant problem.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an automatic gantry submerged arc welding machine which has the advantage of automatically recycling a welding agent and solves the problems in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides an automatic submerged arc welding machine of longmen, includes the portal frame, the top of portal frame sets firmly the coil stock section of thick bamboo that is used for the rolling welding wire, portal frame downside fixedly connected with controller, two lower extreme difference fixedly connected with of portal frame pass through the slide two that the motor drove, two the equal spacing sliding connection of lower surface of slide two has the slide rail, the equal fixed connection of slide rail is subaerial, the both ends are spacing sliding connection respectively about the portal frame have the slide one that drives through the motor, two the equal fixedly connected with fixed column in the outside of slide one, the equal fixedly connected with fixing base of fixed column lower extreme, the equal fixedly connected with welding machine body of lower surface of fixing base, welding machine body, slide one and slide two and controller electric connection, the welding wire in the coil stock section of thick bamboo is connected with welding machine body transmission.
Preferably, two the lower fixed surface of welding machine body is connected with the dead lever, and every two are adjacent fixedly connected with connecting rod between the dead lever, connecting rod outside profile middle part fixedly connected with fixed block, the welder output through connection fixed block of welding machine body, every group the spacing rotation of one end that welding machine body was kept away from to the dead lever is connected with the pulley, the lower surface and the machined part surface laminating of pulley are connected.
Preferably, every group the outside symmetry of pulley is provided with L type piece, L type piece has multiunit and multiunit L type piece to keep away from the equal fixed connection in the adjacent dead lever outside of the one end of pulley.
Preferably, an infrared inductor is fixedly arranged on the lower surface of the welding machine body and electrically connected with the controller, and the output end of the infrared inductor and the output end of the welding gun of the welding machine body are in the same horizontal line.
Preferably, the outer sides of the two fixing columns are fixedly connected with a welding flux cylinder for loading welding flux, the lower end of the welding flux cylinder is connected with a discharging pipe in a penetrating manner, one end, far away from the welding flux cylinder, of the discharging pipe is connected in the fixing block in a penetrating manner and is positioned in the same horizontal line with the output end of a welding gun of the welding machine body, the upper section of the inner wall of the welding flux cylinder is fixedly connected with a limiting ring, the upper surface of the limiting ring is connected with a filter screen in a fitting manner, the filter screen is in threaded connection with the inner wall of the welding cylinder, the upper end of the welding flux cylinder is in threaded connection with a cylinder cover, the upper end of the cylinder cover is in penetrating connection with a negative pressure vacuum machine, the negative pressure vacuum machine is electrically connected with a controller, the outer side of the upper section of the welding flux cylinder is in penetrating connection with a material suction pipe, the outer side, far away from the welding flux cylinder, of the limiting block is fixedly connected with the outer side of the end, far away from infrared ray, of the welding machine body, the input end of the material suction pipe and the output end of the welding gun of the welding machine body are in the same horizontal line.
Preferably, the upper surfaces of the two filter screens are symmetrically and fixedly connected with hand grips, and the hand grips are provided with four clamping grooves in the four hand grips.
Preferably, the inclined rods are fixedly connected between the two vertical rods and the cross rod of the portal frame.
Compared with the prior art, the utility model has the following beneficial effects:
1. according to the automatic submerged arc welding machine, the negative pressure vacuum machine, the welding flux cylinder, the material suction pipe, the discharge pipe and the filter screen are matched, so that the effect that excessive welding flux which is scattered in the continuous welding process of the automatic butt welding machine body is absorbed and enters the welding flux cylinder for recycling is achieved, and the problems that the scattered welding flux is difficult to recycle in the welding work, the welding flux can only be cleaned and collected in the later period of manpower, and the welding flux and labor force are wasted in the traditional gantry automatic submerged arc welding machine are solved;
2. according to the utility model, through stable connection among the pulleys, the fixed rod, the connecting rod, the fixed block, the welding gun and the discharge pipe, the stability effect of the welding machine body during welding can be further improved, and the problem of poor welding gun stability in welding work of the traditional gantry automatic submerged arc welding machine is solved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of the structure of the area A in FIG. 1 according to the present invention;
FIG. 3 is an exploded view of the flux cartridge of the present invention;
FIG. 4 is a top view of the fixing base of the present invention.
In the figure: 1. a gantry; 2. a diagonal bar; 3. a controller; 4. a first sliding seat; 5. fixing a column; 6. a negative pressure vacuum machine; 7. a flux cylinder; 8. a material suction pipe; 9. a discharge pipe; 10. a fixed seat; 11. a welder body; 12. fixing the rod; 13. an L-shaped block; 14. a pulley; 15. a material rolling barrel; 16. a cylinder cover; 17. filtering with a screen; 18. A gripper; 19. a limiting ring; 20. a connecting rod; 21. a fixed block; 22. an infrared sensor; 23. a limiting block; 24. a second sliding seat; 25. a slide rail.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 4, the present invention provides a technical solution: the utility model provides an automatic submerged arc welding machine of longmen, including portal frame 1, portal frame 1's top sets firmly the coil stock section of thick bamboo 15 that is used for the rolling welding wire, portal frame 1 downside fixedly connected with controller 3, two lower extremes of portal frame 1 are two 24 of fixedly connected with through the slide that the motor drove respectively, the equal spacing sliding connection of lower surface of two 24 of slides has slide rail 25, the equal fixed connection of slide rail 25 is subaerial, portal frame 1's the left and right sides both ends are spacing sliding connection respectively have through the slide 4 that the motor drove, the equal fixedly connected with fixed column 5 in the outside of two 4 of slides, the equal fixedly connected with fixing base 10 of 5 lower extremes of fixed column, the equal fixedly connected with welding machine body 11 of lower surface of fixing base 10, welding machine body 11, slide 4 and two 24 of slide and 3 electric connection of controller, the welding wire in the coil stock section of thick bamboo 15 is connected with welding machine body 11 transmission.
The controller 3 controls the first sliding seat 4 to move, so that the welding position between the welding machine body 11 and the workpiece can be quickly calibrated, the second sliding seat 24 can be controlled to move through the controller 3, and the automatic welding effect of driving the welding machine body 11 to automatically and continuously and stably weld the workpiece can be achieved.
The lower fixed surface of two welding machine bodies 11 is connected with dead lever 12, fixedly connected with connecting rod 20 between per two adjacent dead levers 12, connecting rod 20 outside profile middle part fixedly connected with fixed block 21, the welder output of welding machine body 11 link up and connects fixed block 21, the spacing rotation of the one end that welding machine body 11 was kept away from to every group dead lever 12 is connected with pulley 14, pulley 14's lower surface and machined part surface laminating are connected.
Through the arrangement of the pulley 14 and the stable connection among the pulley 14, the fixing rod 12, the connecting rod 20, the fixing block 21, the welding gun and the discharge pipe 9, the stability effect of the welding machine body 11 during welding can be further improved.
The outer side of each group of pulleys 14 is symmetrically provided with L-shaped blocks 13, and each group of L-shaped blocks 13 is provided with a plurality of groups, and one ends of the groups of L-shaped blocks 13 far away from the pulleys 14 are fixedly connected to the outer sides of the adjacent fixing rods 12.
Through the L-shaped blocks 13 symmetrically arranged on the outer side of each group of pulleys 14, the effect of protecting the pulleys 14 can be achieved, and the problem that the welding machine is difficult to stably advance on the surface of a workpiece due to the fact that the pulleys 14 collide with external foreign matters to cause damage is avoided.
The lower surface of the welding machine body 11 is fixedly provided with an infrared inductor 22, the infrared inductor 22 is electrically connected with the controller 3, and the output end of the infrared inductor 22 and the output end of the welding gun of the welding machine body 11 are in the same horizontal line.
The infrared sensor 22 emits infrared rays, so that a person can conveniently observe whether a welding gun is parallel to a welding line between workpieces, and the person can conveniently calibrate the correct welding position of the welding machine body 11.
The outer sides of the two fixing columns 5 are fixedly connected with a welding flux cylinder 7 used for loading welding flux, the lower end of the welding flux cylinder 7 is connected with a discharge pipe 9 in a penetrating manner, one end, far away from the welding flux cylinder 7, of the discharge pipe 9 is connected in a penetrating manner in a fixing block 21 and is in the same horizontal line with the output end of a welding gun of the welding machine body 11, the upper section of the inner wall of the welding flux cylinder 7 is fixedly connected with a limiting ring 19, the upper surface of the limiting ring 19 is connected with a filter screen 17 in a fitting manner, the filter screen 17 is connected onto the inner wall of the welding cylinder in a threaded manner, a cylinder cover 16 is connected with an upper end of the welding flux cylinder 7 in an internal thread manner, a negative pressure vacuum machine 6 is connected with the upper end of the cylinder cover 16 in a penetrating manner, the negative pressure vacuum machine 6 is electrically connected with the controller 3, a suction pipe 8 is connected with the outer side of the upper section of the welding flux cylinder 7 in a penetrating manner, a limiting block 23 is connected with the outer side of the outer side, which is far away from infrared rays of the welding machine body 11, the input end of the material suction pipe 8 and the output end of the welding gun of the welding machine body 11 are in the same horizontal line.
Can reach when breathing in at vacuum pump 6 through filter screen 17, prevent that original welding machine in the welding barrel from inhaling vacuum pump 6 in, cause vacuum pump 6's damage, at vacuum pump 6 during operation, the welding machine discharges in advance through discharging pipe 9 in the welding flux section of thick bamboo 7, reach the effect that prevents welder electric arc four shooting when welder welds, then inhale material pipe 8 when welding forward gradually at welding machine body 11, inhale again in the welding flux section of thick bamboo 7 with unrestrained unnecessary welding machine, reach the automatic welding machine that absorbs, the extravagant labour of later stage manual cleaning collection has been avoided.
The upper surfaces of the two filter screens 17 are symmetrically and fixedly connected with hand grips 18, and the hand grips 18 are provided with four clamping grooves in the four hand grips 18.
The four grippers 18 with the groove structures are symmetrically and fixedly connected to the upper surface of the filter screen 17, so that the filter screen 17 can be conveniently dismounted by a worker.
The stability of the connection between the whole portal frame 1 can be improved through the arrangement of the inclined rods 2, and then the stability effect of the welding machine body 11 during welding is enhanced.
The working principle is as follows: when the gantry automatic submerged arc welding machine is used, firstly, a welding wire in a coil machine is movably connected with a welding machine body 11, the welding wire in a coil cylinder 15 can be stably supplied to a welding gun when the welding machine performs welding, the controller 3 controls two sliding seats I4 to slide to a proper position and stop, then the welding machine body 11 and the infrared inductor 22 are opened, the infrared inductor 22 and the welding gun of the welding machine body 11 are kept in the same horizontal line, whether the output end of the welding gun and the welding line are in a correct position or not can be conveniently observed by a worker, then the controller 3 starts the sliding seats II 24 and the negative pressure vacuum machine 6, the gantry 1 is driven to stably advance on the sliding rails 25 through the sliding seats II 24, the welding machine body 11 can stably advance along the calibrated welding line, and the effect of automatically welding workpieces is achieved.
Meanwhile, the negative pressure vacuum machine 6 is opened, the input end of the negative pressure vacuum machine 6 starts to suck air into the welding flux cylinder 7, at the moment, original welding flux in the welding flux cylinder 7 is difficult to enter the negative pressure vacuum machine 6 through the separation of the filter screen 17, so that the negative pressure vacuum machine 6 is protected, the problem that the negative pressure vacuum machine 6 sucks the welding flux to cause blockage is avoided, negative pressure is formed in the welding flux cylinder 7 due to the closed environment of threaded connection between the cylinder cover 16 and the welding flux cylinder 7, then outside air is sucked in through the suction pipe 8 and is discharged through the negative pressure vacuum machine 6, meanwhile, the welding flux in the welding flux cylinder 7 is scattered to a required welding line between workpieces through the discharge pipe 9, one end of the discharge pipe 9, far away from the welding flux cylinder 7, is connected in the fixed block 21 in a penetrating manner and is in the same horizontal line with the welding gun output end of the welding machine body 11, and the condition that the welding gun prevents arc four-shot is achieved, realize submerged arc welding's effect, just through connection is in stopper 23 in same water flat line according to inhaling material pipe 8 input and the welder output of welding machine body 11 to make and inhale material pipe 8 and can be stable always and absorb unnecessary flux after the surface welding of machined part and get into in the flux section of thick bamboo 7 and carry out used repeatedly, reached the automatic unnecessary flux that absorbs, avoided artifical clearance in later stage to collect extravagant labour, reached the extravagant effect of flux simultaneously.
When portal frame 1 drives welding machine body 11 and continuously moves, welding machine body 11 is connected at the pulley 14 of dead lever 12 lower extreme through its lower surface fixed connection's dead lever 12 and spacing rotation, can be when welding machine body 11 removes, through pulley 14 at machined part gliding effect in surface, promote welding machine body 11's stability, connecting rod 20 through fixed connection between the adjacent dead lever 12 and connecting rod 20 outside profile middle part fixed connection's fixed block 21, and fixed block 21 and welder are through connection with discharging pipe 9, reached further promote welding machine body 11 and when welding man-hour's stability to the machined part.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides an automatic submerged arc welding machine of longmen, includes portal frame (1), the top of portal frame (1) sets firmly reel section of thick bamboo (15) that are used for the rolling welding wire, portal frame (1) downside fixedly connected with controller (3), two lower extremes of portal frame (1) are fixedly connected with respectively and pass through two (24) of slide that the motor drove, two the equal spacing sliding connection of lower surface of two (24) of slide has slide rail (25), the equal fixed connection of slide rail (25) is subaerial, its characterized in that: the utility model discloses a welding machine, including portal frame (1), the equal fixedly connected with fixed column in the outside of slide (4), two, the equal fixedly connected with fixing base (10) of fixed column (5) lower extreme, the equal fixedly connected with welding machine body (11) of lower surface of fixing base (10), welding machine body (11), slide (4) and slide two (24) and controller (3) electric connection, welding wire in the coiling barrel (15) is connected with welding machine body (11) transmission.
2. A gantry automatic submerged arc welding machine according to claim 1, characterized in that: two the lower fixed surface of welding machine body (11) is connected with dead lever (12), and is per two adjacent fixedly connected with connecting rod (20) between dead lever (12), connecting rod (20) outside profile middle part fixedly connected with fixed block (21), the welder output end through connection fixed block (21) of welding machine body (11), every group the spacing rotation of one end of keeping away from welding machine body (11) in dead lever (12) is connected with pulley (14), the lower surface and the machined part surface laminating of pulley (14) are connected.
3. A gantry automatic submerged arc welding machine according to claim 2, characterized in that: every group the outside symmetry of pulley (14) is provided with L type piece (13), L type piece (13) have the multiunit and multiunit L type piece (13) keep away from the equal fixed connection in adjacent dead lever (12) outside of one end of pulley (14).
4. A gantry automatic submerged arc welding machine according to claim 1, characterized in that: the lower surface of the welding machine body (11) is fixedly provided with an infrared inductor (22), the infrared inductor (22) is electrically connected with the controller (3), and the output end of the infrared inductor (22) and the output end of a welding gun of the welding machine body (11) are in the same horizontal line.
5. A gantry automatic submerged arc welding machine according to claim 1, characterized in that: the outer sides of the two fixing columns (5) are fixedly connected with a welding flux cylinder (7) used for loading welding flux, the lower end of the welding flux cylinder (7) is connected with a discharging pipe (9) in a penetrating manner, one end, far away from the welding flux cylinder (7), of the discharging pipe (9) is connected in a fixing block (21) in a penetrating manner and is in the same horizontal line with the output end of a welding gun of a welding machine body (11), the upper section of the inner wall of the welding flux cylinder (7) is fixedly connected with a limiting ring (19), the upper surface of the limiting ring (19) is connected with a filter screen (17) in a fitting manner, the filter screen (17) is connected on the inner wall of the welding cylinder in a threaded manner, the upper end of the welding flux cylinder (7) is connected with a cylinder cover (16) in an inner thread manner, the upper end of the cylinder cover (16) is connected with a negative pressure vacuum machine (6) in a penetrating manner, the negative pressure vacuum machine (6) is electrically connected with a controller (3), and the outer side of the upper section of the welding flux cylinder (7) is connected with a material sucking pipe (8) in a penetrating manner, the outer side of one end, far away from the welding flux cylinder (7), of the material suction pipe (8) is connected with a limiting block (23) in a penetrating mode, the outer side of the limiting block (23) is fixedly connected to the outer side of one end, far away from infrared rays, of the welding machine body (11), and the input end of the material suction pipe (8) and the output end of a welding gun of the welding machine body (11) are located in the same horizontal line.
6. A gantry automatic submerged arc welding machine according to claim 5, characterized in that: the upper surfaces of the two filter screens (17) are symmetrically and fixedly connected with grippers (18), and the grippers (18) are provided with four clamping grooves in the four grippers (18).
7. A gantry automatic submerged arc welding machine according to claim 1, characterized in that: oblique rods (2) are fixedly connected between the two vertical rods and the cross rod of the portal frame (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122492504.8U CN215880278U (en) | 2021-10-17 | 2021-10-17 | Gantry automatic submerged arc welding machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122492504.8U CN215880278U (en) | 2021-10-17 | 2021-10-17 | Gantry automatic submerged arc welding machine |
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| Publication Number | Publication Date |
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| CN215880278U true CN215880278U (en) | 2022-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122492504.8U Active CN215880278U (en) | 2021-10-17 | 2021-10-17 | Gantry automatic submerged arc welding machine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114643396A (en) * | 2022-04-21 | 2022-06-21 | 杭州力琪阀门有限公司 | Automatic welding equipment for inner ring of valve |
| CN115283799A (en) * | 2022-08-24 | 2022-11-04 | 邢台路桥千山桥梁构件有限责任公司 | Novel automatic submerged arc welding fixture for corrugated steel web curve |
| CN115958349A (en) * | 2022-12-30 | 2023-04-14 | 山东金旭钢构工程有限公司 | H-shaped steel gantry welding machine |
-
2021
- 2021-10-17 CN CN202122492504.8U patent/CN215880278U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114643396A (en) * | 2022-04-21 | 2022-06-21 | 杭州力琪阀门有限公司 | Automatic welding equipment for inner ring of valve |
| CN115283799A (en) * | 2022-08-24 | 2022-11-04 | 邢台路桥千山桥梁构件有限责任公司 | Novel automatic submerged arc welding fixture for corrugated steel web curve |
| CN115958349A (en) * | 2022-12-30 | 2023-04-14 | 山东金旭钢构工程有限公司 | H-shaped steel gantry welding machine |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A gantry automatic submerged arc welding machine Granted publication date: 20220222 Pledgee: China Life Property insurance Co.,Ltd. Qingdao Branch Pledgor: Qingdao Hongcheng Steel Structure Engineering Co.,Ltd. Registration number: Y2024370010006 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |