CN114905210B - Auxiliary stand for processing automobile half shaft - Google Patents
Auxiliary stand for processing automobile half shaft Download PDFInfo
- Publication number
- CN114905210B CN114905210B CN202210472285.3A CN202210472285A CN114905210B CN 114905210 B CN114905210 B CN 114905210B CN 202210472285 A CN202210472285 A CN 202210472285A CN 114905210 B CN114905210 B CN 114905210B
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- Prior art keywords
- shaped
- arc
- pneumatic cylinder
- seat
- base
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Links
- 238000003754 machining Methods 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000005945 translocation Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
-
- 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
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/006—Vehicles
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Body Structure For Vehicles (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Seats For Vehicles (AREA)
Abstract
The invention discloses an auxiliary bracket for processing an automobile half shaft, which comprises a base, wherein two groups of struts are fixedly arranged at the top of the base, shaft body fixing seats are arranged at the tops of the struts, an outer sleeve is fixedly arranged at one end of the top of the base, a first pneumatic cylinder is fixedly arranged at the inner bottom of the outer sleeve, an inner sleeve is fixedly arranged at the top end of the first pneumatic cylinder, and a flange plate base is fixedly arranged at the top of the inner sleeve. The invention is provided with the outer sleeve, the first pneumatic cylinder and the inner sleeve, the height of the flange plate is adaptively adjusted through the telescopic structure, the convenience and the accuracy of the welding process are improved, the driving safety of an automobile is further improved, the flange plate is conveniently locked and positioned through the circular through holes on the structure and the flange plate by combining the strip-shaped groove, the second pneumatic cylinder, the -shaped connecting frame and the fixing rod, the stability of the welding process is further improved, slight deflection is avoided, and the accuracy of the processing is influenced.
Description
Technical Field
The invention relates to the technical field of auxiliary tools for machining automobile half shafts, in particular to an auxiliary bracket for machining automobile half shafts.
Background
The automobile half axle is a direct driving part for wheel rotation and is an important part for torque transmission. When the automobile runs, the torque output by the engine is transmitted to the half shafts through the multistage speed change and the initiative device, and then the half shafts are transmitted to the wheels to push the automobile to advance or retreat. When the off-road vehicle starts or runs on an upward slope or on a mountain road or on a hilly road, the torque is very high, and particularly, the off-road vehicle is braked emergently or runs on an uneven road, so that the working condition is worse. Therefore, the half axle is required to bear the effects of impact, alternating bending fatigue load and torsion force in operation, and the materials used are required to have enough bending strength, shearing strength and better toughness.
The connection of the half shaft and the flange plate is generally fixed through welding, the position of the flange plate is not convenient to accurately adjust by traditional welding equipment, and after welding is finished, the half shaft cannot be driven to integrally rotate so as to polish burrs, so that the invention designs an auxiliary bracket for processing the automobile half shaft to solve the problems in the prior art.
Disclosure of Invention
The invention aims to provide an auxiliary bracket for processing an automobile half shaft, which aims to solve the problems in the background art.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides an auxiliary stand is used in automobile semi-axis processing, includes the base, the top fixed mounting of base has two sets of branches, and the top of branch all is provided with the axis body fixing base, the one end fixed mounting at base top has the outer tube, and the interior bottom fixed mounting of outer tube has first pneumatic cylinder, the top fixed mounting of first pneumatic cylinder has the interior sleeve pipe, and interior sleeve pipe's top fixed mounting has the ring flange collet, the interior bottom of ring flange collet is provided with ring flange fixed subassembly, one side of ring flange collet has driving motor through linking bridge fixed mounting, and driving motor's output installs the connecting piece main part, the chucking groove has all been seted up to the both ends symmetry of connecting piece main part, and the both sides of connecting piece main part all are provided with electric putter, the both ends of electric putter all fixed mounting have the go-between, and the go-between all cover is established on the lateral wall of connecting piece main part, one side that the go-between kept away from all evenly articulates has L type pole, and the other end of L type push-and-pull pole all articulates there is the connecting rod, rectangular cavity all has been seted up at the both ends of the outer lateral wall of connecting piece main part, L type connecting rod and rectangular panel all the connecting rod all have the cavity all, the control panel all is fixed in the cavity all.
Preferably, the shaft body fixing seat comprises a first arc-shaped seat, a second arc-shaped seat, rollers and a threaded pin shaft, wherein one end of the first arc-shaped seat is hinged with the second arc-shaped seat, and the rollers are uniformly arranged on the inner sides of the first arc-shaped seat and the second arc-shaped seat.
Preferably, the flange plate fixing component comprises a strip-shaped groove, a second pneumatic cylinder, a -shaped connecting frame and a fixing rod, wherein the strip-shaped groove is formed in two sides of the flange plate base, the fixing rod is arranged between the strip-shaped grooves, the -shaped connecting frame in threaded connection with the fixing rod is arranged on the outer side of the fixing rod, the second pneumatic cylinder is fixedly arranged on the -shaped connecting frame, the other point of the second pneumatic cylinder is fixed at the bottom of the flange plate base, the outer side wall of one end of the fixing rod is uniformly provided with a threaded groove, the other end of the fixing rod is provided with a holding handle, and the fixing rod is matched with a circular through hole on the flange plate.
Preferably, the first arc-shaped seat and the second arc-shaped seat are mutually clamped away from one end of the hinged end, a threaded pin shaft is arranged at the clamping position, and the threaded pin shaft is matched with threaded holes in the first arc-shaped seat and the second arc-shaped seat to fix.
Preferably, the outer sides of the rollers are uniformly provided with thick rubber layers. .
Preferably, prismatic anti-slip strips are uniformly arranged on the sides, close to the compression strips, of the compression strips.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, through the arrangement of the outer sleeve, the first pneumatic cylinder and the inner sleeve, the height of the flange plate is adaptively adjusted through the telescopic structure, so that the convenience and accuracy of the welding process are improved, the driving safety of an automobile is further improved, the bar-shaped groove, the second pneumatic cylinder, the -shaped connecting frame and the fixing rod are combined, the flange plate is conveniently locked and positioned through the circular through holes on the structure and the flange plate, the stability of the welding process is further improved, slight deflection is avoided, and the accuracy of the processing is influenced;
2. according to the invention, through the arrangement of the first arc-shaped seat, the second arc-shaped seat, the idler wheels and the threaded pin shafts, the outer sides of the shaft bodies are fixed through the structure, the occurrence of translocation is avoided, the welding processing is influenced, and after the welding is finished, the shaft bodies can be rotated, so that the follow-up burr polishing and cleaning are facilitated;
3. according to the invention, through the arrangement of the connecting piece main body, the clamping groove, the electric push rod, the connecting ring, the L-shaped push-pull rod, the connecting rod, the rectangular cavity and the compression strip, the output end of the driving motor and one end of the shaft body are conveniently and quickly fixedly connected through the locking structure, so that the convenience of disassembly and assembly operation is improved, the processing time is shortened, the shaft body and the outer sides of the flange plates can be cleaned and burr polished through the structure after the fixation is finished, and the functionality of the bracket is improved.
Drawings
FIG. 1 is a schematic view in front cross-section of the present invention;
FIG. 2 is a schematic cross-sectional view of a connector structure according to the present invention;
FIG. 3 is a schematic cross-sectional view of a shaft fixing seat according to the present invention;
fig. 4 is an enlarged schematic view of the structure a of fig. 1 according to the present invention.
In the figure: 1. a base; 2. a support rod; 3. a first arc-shaped seat; 4. a second arc-shaped seat; 5. a roller; 6. a threaded pin shaft; 7. an outer sleeve; 8. a first pneumatic cylinder; 9. an inner sleeve; 10. a flange plate bottom bracket; 11. a bar-shaped groove; 12. a second pneumatic cylinder; 13. shaped connecting frame; 14. a fixed rod; 15. a driving motor; 16-1, a connector body; 16-2, clamping grooves; 16-3, an electric push rod; 16-4, a connecting ring; 16-5, an L-shaped push-pull rod; 16-6, connecting rod; 16-7, rectangular cavity; 16-8, compacting strips; 17. and a control panel.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-4, an embodiment of the present invention is provided: an auxiliary bracket for processing an automobile half shaft comprises a base 1, wherein two groups of struts 2 are fixedly arranged at the top of the base 1, shaft body fixing seats are arranged at the tops of the struts 2, an outer sleeve 7 is fixedly arranged at one end of the top of the base 1, a first pneumatic cylinder 8 is fixedly arranged at the inner bottom of the outer sleeve 7, the bearing height of a flange plate is convenient to adjust, the applicability of the device is improved, an inner sleeve 9 is fixedly arranged at the top of the first pneumatic cylinder 8, a flange plate collet 10 is fixedly arranged at the top of the inner sleeve 9, a flange plate fixing component is arranged at the inner bottom of the flange plate collet 10, a driving motor 15 is fixedly arranged at one side of the flange plate collet 10 through a connecting bracket, a connecting piece main body 16-1 is arranged at the output end of the driving motor 15, clamping grooves 16-2 are symmetrically formed at two ends of the connecting piece main body 16-1, electric push rods 16-3 are arranged at two sides of the connecting piece main body 16-1, connecting rings 16-4 are fixedly arranged at two ends of the electric push rods 16-3, the connecting rings 16-4 are sleeved on the outer side wall of the connecting piece main body 16-1, L-shaped push-pull rods 16-5 are uniformly hinged to one far side of the connecting rings 16-4, connecting rods 16-6 are hinged to the other end of the L-shaped push-pull rods 16-5, rectangular cavities 16-7 are uniformly formed at two ends of the outer side wall of the connecting piece main body 16-1, hinging shafts of the L-shaped push-pull rods 16-5 and the connecting rods 16-6 are fixed in the rectangular cavities 16-7, pressing strips 16-8 are hinged to the other ends of the connecting rods 16-6, a control panel 17 is fixedly arranged at one end of the top of the base 1, the control panel 17 is electrically connected with the first pneumatic cylinder 8, the driving motor 15, the electric push rod 16-3 and the second pneumatic cylinder 12 through wires, so that remote operation and adjustment of the control panel 17 are facilitated, and the overall convenience of the bracket is improved.
In this embodiment: the shaft body fixing seat comprises a first arc-shaped seat 3, a second arc-shaped seat 4, idler wheels 5 and a threaded pin shaft 6, one end of the first arc-shaped seat 3 is hinged with the second arc-shaped seat 4, the idler wheels 5 are uniformly arranged on the inner sides of the first arc-shaped seat 3 and the second arc-shaped seat 4, the two ends of the shaft body are conveniently and simultaneously fixed, the shaft body is prevented from deflecting, the welding is prevented from being influenced, the locking mode is convenient to disassemble and assemble, the flange fixing assembly comprises strip-shaped grooves 11, second pneumatic cylinders 12, -shaped connecting frames 13 and fixing rods 14, the strip-shaped grooves 11 are formed in two sides of the flange collet 10, the fixing rods 14 are arranged between the strip-shaped grooves 11, -shaped connecting frames 13 in threaded connection with the fixing rods 14 are arranged on the outer sides of the fixing rods 14, the -shaped connecting frames 13 are fixedly provided with second pneumatic cylinders 12, the other points of the second pneumatic cylinders 12 are fixed at the bottom of the flange collet 10, the outer side wall of one end of the fixed rod 14 is uniformly provided with a thread groove, the other end of the fixed rod 14 is provided with a holding handle, the fixed rod 14 is matched with a circular through hole on a flange plate, the position accuracy of welding operation is further improved, the position of the flange plate is conveniently fixed, one ends of the first arc-shaped seat 3 and the second arc-shaped seat 4 far away from the hinged end are mutually clamped, the clamping part is provided with a thread pin shaft 6, the thread pin shaft 6 is matched with threaded holes on the first arc-shaped seat 3 and the second arc-shaped seat 4 to be fixed, after positioning is completed, locking treatment is conveniently carried out, the outer sides of the idler wheels 5 are uniformly provided with thick rubber layers, the laminating performance is improved, follow-up rotation cleaning and polishing are conveniently carried out, prismatic anti-slip strips are uniformly arranged on one sides of the compacting strips 16-8 close to each other, the stability after fixing is improved, the rotation of a driving shaft body is conveniently carried out, is convenient for cleaning and polishing.
Working principle: the automobile is powered on (the device uses electric components to be powered by an external power supply), the automobile shaft body is placed on the first arc-shaped seat 3, the second arc-shaped seat 4 is cartoon with the first arc-shaped seat 3, locking treatment is carried out by matching with the threaded pin shaft 6, the flange is placed on the flange bottom support 10, the second pneumatic cylinder 12 is regulated and controlled to stretch out and draw back according to the size of the flange, the position of the fixed rod 14 is regulated and draw back according to the size of the flange, the fixed rod 14 is pressed and screwed by a holding handle, the fixed rod 14 penetrates through a round hole in the flange and is locked, the second pneumatic cylinder 12 is controlled to stretch out and press down and tighten, the flange is regulated and adjusted to be suitable for height by stretching and retracting the first pneumatic cylinder 8, the shaft body is welded with the flange, and the like, the locking relation of the fixed rod 14 is released after the completion, the output end of the driving motor 15 and one end of the shaft body are placed in the clamping groove 16-2, the electric push rod 16-3 is stretched by the control panel 17, and then the connecting push rod 16-4, the L-shaped rod 16-5 and the connecting rod 16-6 are pushed and the connecting rod 16-8 are simultaneously fixed by connecting rods 16-8, and the two ends of the connecting rod 16-8 are simultaneously well known in the prior art.
Although the present invention has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present invention.
Claims (5)
1. Auxiliary stand is used in automobile semi-axis processing, including base (1), its characterized in that: the top of base (1) fixed mounting has two sets of branch (2), and the top of branch (2) all is provided with the axis body fixing base, the one end fixed mounting at base (1) top has outer tube (7), and the inner bottom fixed mounting of outer tube (7) has first pneumatic cylinder (8), the top fixed mounting of first pneumatic cylinder (8) has interior sleeve (9), and the top fixed mounting of interior sleeve (9) has flange dish collet (10), the inner bottom of flange dish collet (10) is provided with flange dish fixed subassembly, one side of flange dish collet (10) is through linking bridge fixed mounting driving motor (15), and the output of driving motor (15) installs connecting piece main part (16-1), chucking groove (16-2) have been seted up to the both ends symmetry of connecting piece main part (16-1), and the both sides of connecting piece main part (16-1) all are provided with electric putter (16-3), the both ends that push and pull and push away from of electric putter (16-3) all are fixed mounting go-between (16-4), and go-between (16-4) are all fixed mounting link (16-4), and link (16-4) are all kept away from on all links (16-5) one side of connecting piece (16-1), the other ends of the L-shaped push-pull rods (16-5) are hinged with connecting rods (16-6), rectangular cavities (16-7) are uniformly formed in the two ends of the outer side wall of the connecting piece main body (16-1), the hinged shafts of the L-shaped push-pull rods (16-5) and the connecting rods (16-6) are fixed in the rectangular cavities (16-7), the other ends of the connecting rods (16-6) are hinged with pressing strips (16-8), and a control panel (17) is fixedly arranged at one end of the top of the base (1);
the flange plate fixing assembly comprises a strip-shaped groove (11), a second pneumatic cylinder (12), a -shaped connecting frame (13) and a fixing rod (14), wherein the strip-shaped groove (11) is formed in two sides of the flange plate base (10), the fixing rod (14) is arranged between the strip-shaped grooves (11), the -shaped connecting frame (13) in threaded connection with the fixing rod (14) is arranged on the outer side of the fixing rod (14), the second pneumatic cylinder (12) is fixedly installed on the -shaped connecting frame (13), the other point of the second pneumatic cylinder (12) is fixed at the bottom of the flange plate base (10), the threaded groove is uniformly formed in the outer side wall of one end of the fixing rod (14), the other end of the fixing rod (14) is provided with a holding handle, and the fixing rod (14) is suitable for a circular through hole on a flange plate.
2. The auxiliary bracket for machining an automotive half shaft according to claim 1, wherein: the shaft body fixing seat comprises a first arc-shaped seat (3), a second arc-shaped seat (4), rollers (5) and a threaded pin shaft (6), wherein one end of the first arc-shaped seat (3) is hinged with the second arc-shaped seat (4), and the rollers (5) are uniformly arranged on the inner sides of the first arc-shaped seat (3) and the second arc-shaped seat (4).
3. The auxiliary bracket for machining an automotive half shaft according to claim 2, wherein: the one end that articulated end was kept away from to first arc seat (3) and second arc seat (4) is block each other, and the block department is provided with screw thread round pin axle (6), screw thread round pin axle (6) cooperate screw hole on first arc seat (3) and second arc seat (4) to fix.
4. The auxiliary bracket for machining an automotive half shaft according to claim 2, wherein: the outer sides of the rollers (5) are uniformly provided with rubber layers.
5. An auxiliary stand for automotive axle shaft tooling as defined in claim 3, wherein: prismatic anti-slip strips are uniformly arranged on the sides, close to the compression strips (16-8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210472285.3A CN114905210B (en) | 2022-04-29 | 2022-04-29 | Auxiliary stand for processing automobile half shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210472285.3A CN114905210B (en) | 2022-04-29 | 2022-04-29 | Auxiliary stand for processing automobile half shaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114905210A CN114905210A (en) | 2022-08-16 |
| CN114905210B true CN114905210B (en) | 2023-10-27 |
Family
ID=82764232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210472285.3A Active CN114905210B (en) | 2022-04-29 | 2022-04-29 | Auxiliary stand for processing automobile half shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114905210B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203076825U (en) * | 2012-12-13 | 2013-07-24 | 天津卡达克汽车高新技术公司 | Four-bar linkage clamping device pushed by cylinder |
| KR20140141332A (en) * | 2013-05-31 | 2014-12-10 | 목포대학교산학협력단 | Automatic welding device of circumference and flange |
| CN110722357A (en) * | 2019-10-23 | 2020-01-24 | 合肥禾松信息科技有限公司 | Pipeline connection stainless steel flange welding operation processing machine |
| CN212683009U (en) * | 2020-07-21 | 2021-03-12 | 常熟市天成汽车焊接设备有限公司 | Automobile pipeline welding positioning tool |
| CN213106258U (en) * | 2020-07-23 | 2021-05-04 | 江苏沪宝船舶机械有限公司 | Feeding equipment for metal pipe polishing machine |
| CN213225824U (en) * | 2020-08-04 | 2021-05-18 | 上海济唐润滑材料科技有限公司 | Novel fastening buckle for hardware fitting |
| CN213318683U (en) * | 2020-09-29 | 2021-06-01 | 济南海珺机电设备有限公司 | Large-diameter pipe fitting butt welding tool |
| CN113714724A (en) * | 2021-08-14 | 2021-11-30 | 新奥新能源工程技术有限公司 | Welding assistor for flange welding that welding efficiency is high |
| CN216066220U (en) * | 2021-09-01 | 2022-03-18 | 中铁建设集团机电安装有限公司 | Liftable positioning pipeline flange welding position device |
-
2022
- 2022-04-29 CN CN202210472285.3A patent/CN114905210B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203076825U (en) * | 2012-12-13 | 2013-07-24 | 天津卡达克汽车高新技术公司 | Four-bar linkage clamping device pushed by cylinder |
| KR20140141332A (en) * | 2013-05-31 | 2014-12-10 | 목포대학교산학협력단 | Automatic welding device of circumference and flange |
| CN110722357A (en) * | 2019-10-23 | 2020-01-24 | 合肥禾松信息科技有限公司 | Pipeline connection stainless steel flange welding operation processing machine |
| CN212683009U (en) * | 2020-07-21 | 2021-03-12 | 常熟市天成汽车焊接设备有限公司 | Automobile pipeline welding positioning tool |
| CN213106258U (en) * | 2020-07-23 | 2021-05-04 | 江苏沪宝船舶机械有限公司 | Feeding equipment for metal pipe polishing machine |
| CN213225824U (en) * | 2020-08-04 | 2021-05-18 | 上海济唐润滑材料科技有限公司 | Novel fastening buckle for hardware fitting |
| CN213318683U (en) * | 2020-09-29 | 2021-06-01 | 济南海珺机电设备有限公司 | Large-diameter pipe fitting butt welding tool |
| CN113714724A (en) * | 2021-08-14 | 2021-11-30 | 新奥新能源工程技术有限公司 | Welding assistor for flange welding that welding efficiency is high |
| CN216066220U (en) * | 2021-09-01 | 2022-03-18 | 中铁建设集团机电安装有限公司 | Liftable positioning pipeline flange welding position device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114905210A (en) | 2022-08-16 |
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