CN109664063A - A kind of centralising device for pipeline docking - Google Patents
A kind of centralising device for pipeline docking Download PDFInfo
- Publication number
- CN109664063A CN109664063A CN201811589012.7A CN201811589012A CN109664063A CN 109664063 A CN109664063 A CN 109664063A CN 201811589012 A CN201811589012 A CN 201811589012A CN 109664063 A CN109664063 A CN 109664063A
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- Prior art keywords
- pedestal
- pipeline
- total
- block
- fixedly connected
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Classifications
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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
- B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
- B23K37/0533—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor external pipe alignment clamps
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a kind of centralising devices for pipeline docking, device is limited including total guide rail, clamping device, rotating member and amplitude of fluctuation, total guide rail is equipped with total pedestal, clamping device is located above total pedestal, rotating member is between clamping device and total pedestal, rotating member drives clamping device, and amplitude of fluctuation limits device and is located on total guide rail, and amplitude of fluctuation limits the side that device is located at total pedestal.Pipeline to be docked by being first fixed clamping by the present invention with clamping device, then by adjusting rotating member, the position for adjusting pipeline to be docked or so makes interface alignment and pipeline centering, while defining the range that pipeline swings by amplitude of fluctuation restriction device, when pipeline or so adjusts, periphery will not be impacted, then by mobile total pedestal, adjust the front-rear position of pipeline, it realizes pipeline centering and saves time, easy to operate, reduce security risk.
Description
Technical field
The invention belongs to pipe installation technology fields, and in particular to a kind of centralising device for pipeline docking.
Background technique
Pipeline is to require to be welded substantially in construction, reaches required installation effect and installation length with this, therefore
Require to be grouped, weld operation substantially in pipeline construction, conventional group to, welding be all on the ground or on step it is complete
At.
For pipeline when butt welding connects, the nozzles of two butt tubes must be to just, capable of just making two pipes reach requirement after connecting
Concentricity, while the circumferential weld size of weld bond also can control relatively uniform.But when two pipeline suspensions are welded,
All in suspended state, pipeline is easy to wave two pipes, and control takes a significant amount of time interface needs, and inaccurate；When on pipeline
When space is not suspended in portion in midair, need to adjust the bottom of pipeline using a thousand pieces of gold top or other supporters docking, the left and right of pipeline
Adjust it is cumbersome, it is time-consuming, laborious, and there are security risks.
Summary of the invention
Above-mentioned technical problem present in present invention aims to solve the prior art, provide it is a kind of for pipeline docking
Centralising device, by the way that first pipeline to be docked is fixed clamping with clamping device, then by adjusting rotating member, adjustment to
The position of the pipeline of docking or so makes interface alignment and pipeline centering, while limiting device by amplitude of fluctuation and defining pipeline
The range to swing will not impact periphery when pipeline or so adjusts, then by mobile total pedestal, adjust pipeline
Front-rear position realizes pipeline centering and saves time, easy to operate, reduces security risk.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical scheme:
A kind of centralising device for pipeline docking, it is characterised in that: including total guide rail, clamping device, rotating member and pendulum
Dynamic amplitude limits device, and total guide rail is equipped with total pedestal, and clamping device is located above total pedestal, rotating member be located at clamping device with always
Between pedestal, rotating member drives clamping device, and amplitude of fluctuation limits device and is located on total guide rail, and amplitude of fluctuation limits device and is located at
The side of total pedestal.Pipeline to be docked by being first fixed clamping by the present invention with clamping device, then by adjusting turning
Moving part adjusts the position of pipeline to be docked or so, makes interface alignment and pipeline centering, while limiting device by amplitude of fluctuation
It defines that the range that pipeline swings will not impact periphery when pipeline or so adjusts, then passes through mobile total pedestal,
The front-rear position for adjusting pipeline realizes pipeline centering and saves time, easy to operate, reduces security risk.
Further, clamping device includes frame, supporting part, compressed part, the first threaded rod, and the first threaded rod passes through frame
Top, for the first threaded rod equipped with the first nut, the first nut is tightened against the two sides of frame, and compressed part is fixedly connected on the first spiral shell
The bottom of frame is fixed in the bottom end of rasp bar, supporting part, and supporting part matches with compressed part.Pipeline to be docked is placed in support
In portion, by unscrewing the first nut, so as to adjust the upper and lower position of the first threaded rod, mobile first threaded rod is to drive compression
The first nut is tightened in the two sides of frame by portion, so that the first threaded rod is fixed, compressed part and supporting part are matched for clamping tightly to butt tube
Road realizes the fixation clamping of pipeline to be docked.
Further, frame includes support portion and U type connecting rod part, and the side of support portion and U type connecting rod part are hinged, support portion
The other side is equipped with locating piece, and the other side of U type connecting rod part is equipped with fixed block, and fixed block is hinged with limit and hooks, and limit hooks and positioning
Block matches, and when pipe is to when needing clamping, can hook limit and turn on, then rotate U type connecting rod part, can will be placed in supporting part
On, it realizes pipeline to be docked and places fast.
Further, rotating member includes rotating bar, fixing seat and turntable, and fixing seat is fixedly connected on total pedestal, rotating bar
Across fixing seat, one end of rotating bar is equipped with first gear, shaft is connected between turntable and total pedestal, clamping device is solid
Surely it is connected on turntable, the bottom of turntable is equipped with second gear, and first gear is meshed with the second gear.The rotation of rotating bar,
It is meshed with the second gear by first gear, rotating bar drives turntable rotation, realizes the left and right adjustment with docking pipeline.
Further, the other end of rotating bar is equipped with handle, facilitates the rotation of rotating bar.
Further, it includes limiting pedestal, limit sleeve and telescopic adjustment part, two restriction pedestals pair that amplitude of fluctuation, which limits device,
Title is set on total guide rail, is limited pedestal and is flexibly connected with total guide rail, and telescopic adjustment part is fixedly connected on the top for limiting pedestal,
Limit sleeve is fixedly connected on telescopic adjustment part.By telescopic adjustment part, limit sleeve is driven, so that adjustable pipeline to be docked is left
The range moved right.
Further, it is fixedly connected with connecting plate between the bottom end of two restriction pedestals, realizing two restriction seats can be into
Row synchronizing moving.
Further, telescopic adjustment part includes adjustment base, the second threaded rod, adjusting block, adjusting bracket and limited block, adjusts bottom
Seat is fixedly connected on the top for limiting pedestal, and adjusting block is fixedly connected on the top of adjustment base, and limited block is fixedly connected on tune
The top of pedestal is saved, limited block is located at the two sides of adjusting block, and the second threaded rod passes through limited block, and the second threaded rod is equipped with the second spiral shell
Mother, the second nut are tightened against the two sides of adjusting block, and adjusting bracket is welded in the end of the second threaded rod, and limit sleeve is fixedly connected on tune
It saves between frame, the two sides of adjusting block are equipped with sliding slot, and the bottom of adjusting bracket is equipped with sliding block, and sliding block is located in sliding slot.Unscrew the with crossing
Two nuts are adjusted the second threaded rod, to adjust the position of adjusting bracket, then tighten the second nut, fix the second threaded rod, real
The easy to adjust, quick of limit sleeve is showed.
Further, total pedestal is equipped with the fixed device of rotating member, the fixed device of rotating member include firm banking, pushing block with
Band guide rod cylinder, pushing block pass through firm banking, and one end of pushing block is equipped with U-shaped folder set, and U-shaped folder set matches with rotating member,
The other end of pushing block is set to guide rod cylinder.After the completion of docking pipeline centering, by the promotion of cylinder, U-shaped folder is driven
Set, can fix rotating member.
The present invention is by adopting the above-described technical solution, have the advantages that
Pipeline to be docked by being first fixed clamping by the present invention with clamping device, then by adjusting rotating member,
The position for adjusting pipeline to be docked or so makes interface alignment and pipeline centering, while passing through amplitude of fluctuation and limiting device restriction
The range that pipeline swings will not impact periphery when pipeline or so adjusts, then pass through mobile total pedestal, adjustment
The front-rear position of pipeline realizes pipeline centering and saves time, easy to operate, reduces security risk.
It includes limiting pedestal, limit sleeve and telescopic adjustment part, two restriction pedestals that amplitude of fluctuation, which limits device, in the present invention
It is symmetrically disposed on total guide rail, limits pedestal and be flexibly connected with total guide rail, telescopic adjustment part is fixedly connected on the top for limiting pedestal
End, limit sleeve are fixedly connected on telescopic adjustment part.By telescopic adjustment part, limit sleeve is driven, thus adjustable to butt tube
The range that road moves left and right.It is fixedly connected with connecting plate between the bottom end of two restriction pedestals, realizing two restriction seats can be with
Synchronize movement.Telescopic adjustment part includes adjustment base, the second threaded rod, adjusting block, adjusting bracket and limited block, adjustment base
It is fixedly connected on the top for limiting pedestal, adjusting block is fixedly connected on the top of adjustment base, and limited block is fixedly connected on adjusting
The top of pedestal, limited block are located at the two sides of adjusting block, and the second threaded rod passes through limited block, and the second threaded rod is equipped with the second spiral shell
Mother, the second nut are tightened against the two sides of adjusting block, and adjusting bracket is welded in the end of the second threaded rod, and limit sleeve is fixedly connected on tune
It saves between frame, the two sides of adjusting block are equipped with sliding slot, and the bottom of adjusting bracket is equipped with sliding block, and sliding block is located in sliding slot.Unscrew the with crossing
Two nuts are adjusted the second threaded rod, to adjust the position of adjusting bracket, then tighten the second nut, fix the second threaded rod, real
The easy to adjust, quick of limit sleeve is showed.
Total pedestal is equipped with the fixed device of rotating member in the present invention, and the fixed device of rotating member includes firm banking, pushing block
With band guide rod cylinder, pushing block passes through firm banking, and one end of pushing block is equipped with U-shaped folder set, U-shaped folder set and rotating member phase
Match, the other end of pushing block is set to guide rod cylinder.After the completion of docking pipeline centering, by the promotion of cylinder, drive U-shaped
Collet can fix rotating member.
Detailed description of the invention
The present invention will be further explained below with reference to the attached drawings:
Fig. 1 is a kind of structural schematic diagram of the centralising device for pipeline docking of the present invention；
Fig. 2 is the structural schematic diagram of the fixed device of rotating member in the present invention；
Fig. 3 is the structural schematic diagram of rotating member in the present invention；
Fig. 4 is the structural schematic diagram of clamping device in the present invention；
Fig. 5 is the structural schematic diagram that telescopic adjustment part is connect with limit sleeve in the present invention.
In figure, the total guide rail of 1-；2- clamping device；3- rotating member；4- amplitude of fluctuation limits device；The total pedestal of 5-；6- frame；
The supporting part 7-；8- compressed part；The first threaded rod of 9-；The first nut of 10-；11- support portion；12-U type link member；13- locating piece；
14- fixed block；15- limit hooks；16- rotating bar；17- fixing seat；18- turntable；19- first gear；20- shaft；The second tooth of 21-
Wheel；22- handle；23- limits pedestal；24- limit sleeve；25- telescopic adjustment part；26- connecting plate；27- adjustment base；28- second
Threaded rod；29- adjusting block；30- adjusting bracket；31- limited block；The second nut of 32-；33- sliding slot；34- sliding block；35- rotating member is solid
Determine device；36- firm banking；37- pushing block；38- band guide rod cylinder；39-U type collet.
Specific embodiment
It as shown in Figures 1 to 5, is a kind of centralising device for pipeline docking of the present invention, including total guide rail 1, clamping dress
It sets 2, rotating member 3 and amplitude of fluctuation limits device 4, total guide rail 1 is equipped with total pedestal 5, and clamping device 2 is located at total 5 top of pedestal, turns
Moving part 3 is located between clamping device 2 and total pedestal 5, and rotating member 3 drives clamping device 2, and amplitude of fluctuation limits device 4 and is located at always
On guide rail 1, amplitude of fluctuation limits the side that device 4 is located at total pedestal 5.
Clamping device 2 includes frame 6, supporting part 7, compressed part 8, the first threaded rod 9, and the first threaded rod 9 passes through frame 6
Top, the first threaded rod 9 are tightened against the two sides of frame 6 equipped with the first nut 10, the first nut 10, and compressed part 8 is fixedly connected
In the bottom end of the first threaded rod 9, the bottom of frame 6 is fixed in supporting part 7, and supporting part 7 matches with compressed part 8.To be docked
Pipeline is placed on supporting part 7, by unscrewing the first nut 10, so as to adjust the upper and lower position of the first threaded rod 9, movement first
Threaded rod 9 tightens the first nut 10 in the two sides of frame 6 to drive compressed part 8, so that the first threaded rod 9 is fixed, compressed part
8 are matched for clamping tightly pipeline to be docked with supporting part 7, realize the fixation clamping of pipeline to be docked.
Frame 6 includes support portion 11 and U type connecting rod part 12, and the side of support portion 11 and U type connecting rod part 12 are hinged, support portion
11 other side is equipped with locating piece 13, and the other side of U type connecting rod part 12 is equipped with fixed block 14, and fixed block 14 is hinged with limit and hooks
15, limit hooks 15 to match with locating piece 13, when pipe arrives when needing clamping, can will limit hook 15 and turn on, and then rotate U type connecting rod
Part 12 can will be placed on supporting part 7, be realized pipeline to be docked and be placed fast.
Rotating member 3 includes rotating bar 16, fixing seat 17 and turntable 18, and fixing seat 17 is fixedly connected on total pedestal 5, is rotated
Bar 16 passes through fixing seat 17, and one end of rotating bar 16 is equipped with first gear 19, is connected with and turns between turntable 18 and total pedestal 5
Axis 20, clamping device 2 are fixedly connected on turntable 18, and the bottom of turntable 18 is equipped with second gear 21, first gear 19 and second
Gear 21 is meshed.The rotation of rotating bar 16 is meshed by first gear 19 with second gear 21, and rotating bar 16 drives turntable
18 rotations realize the left and right adjustment with docking pipeline.The other end of rotating bar 16 is equipped with handle 22, facilitates turning for rotating bar 16
It is dynamic.
It includes limiting pedestal 23, limit sleeve 24 and telescopic adjustment part 25, two restriction pedestals 23 that amplitude of fluctuation, which limits device 4,
It is symmetrically disposed on total guide rail 1, limits pedestal 23 and be flexibly connected with total guide rail 1, telescopic adjustment part 25, which is fixedly connected on, limits bottom
The top of seat 23, limit sleeve 24 are fixedly connected on telescopic adjustment part 25.By telescopic adjustment part 25, limit sleeve 24 is driven, from
And the range that adjustable pipeline to be docked moves left and right.It is fixedly connected with connecting plate 26 between the bottom end of two restriction pedestals 23,
Movement can be synchronized by realizing two restriction seats.
Telescopic adjustment part 25 includes adjustment base 27, the second threaded rod 28, adjusting block 29, adjusting bracket 30 and limited block 31,
Adjustment base 27 is fixedly connected on the top for limiting pedestal 23, and adjusting block 29 is fixedly connected on the top of adjustment base 27, limits
Block 31 is fixedly connected on the top of adjustment base 27, and limited block 31 is located at the two sides of adjusting block 29, and the second threaded rod 28 passes through limit
Position block 31, the second threaded rod 28 are equipped with the second nut 32, and the second nut 32 is tightened against the two sides of adjusting block 29, and adjusting bracket 30 welds
In the end of the second threaded rod 28, limit sleeve 24 is fixedly connected between adjusting bracket 30, and the two sides of adjusting block 29 are equipped with sliding slot 33,
The bottom of adjusting bracket 30 is equipped with sliding block 34, and sliding block 34 is located in sliding slot 33.Unscrew the second nut 32 with crossing, the second screw thread is adjusted
Bar 28 to adjust the position of adjusting bracket 30, then tightens the second nut 32, fixes the second threaded rod 28, realize limit sleeve 24
It is easy to adjust, quick.
Total pedestal 5 is equipped with the fixed device 35 of rotating member, and the fixed device 35 of rotating member includes firm banking 36, pushing block 37
With band guide rod cylinder 38, pushing block 37 passes through firm banking 36, and one end of pushing block 37 is equipped with U-shaped folder set 39, U-shaped folder set 39 with
Rotating member 3 matches, and the other end of pushing block 37 is set to guide rod cylinder 38.After the completion of docking pipeline centering, pass through gas
The promotion of cylinder drives U-shaped folder set 39, can fix rotating member 3.
Pipeline clamping device 2 to be docked by being first fixed clamping by the present invention, then by adjusting rotating member
3, the position of pipeline to be docked or so is adjusted, interface alignment and pipeline centering are made, while passing through amplitude of fluctuation and limiting the limit of device 4
Periphery will not be impacted when pipeline or so adjusts by having determined the range that pipeline swings, then by mobile total pedestal 5, be adjusted
The front-rear position in homogeneous tube road realizes pipeline centering and saves time, easy to operate, reduces security risk.
The above is only specific embodiments of the present invention, but technical characteristic of the invention is not limited thereto.It is any with this hair
Based on bright, to solve essentially identical technical problem, essentially identical technical effect is realized, made simple change, etc.
With replacement or modification etc., all it is covered by among protection scope of the present invention.
Claims (9)
1. a kind of centralising device for pipeline docking, it is characterised in that: including total guide rail, clamping device, rotating member and swing
Amplitude limits device, and total guide rail is equipped with total pedestal, and the clamping device is located above total pedestal, the rotating member position
Between the clamping device and total pedestal, the rotating member drives the clamping device, and the amplitude of fluctuation limits dress
Setting on total guide rail, the amplitude of fluctuation limits the side that device is located at total pedestal.
2. a kind of centralising device for pipeline docking according to claim 1, it is characterised in that: the clamping device packet
Frame, supporting part, compressed part, the first threaded rod are included, first threaded rod passes through the top of the frame, first screw thread
For bar equipped with the first nut, first nut is tightened against the two sides of the frame, and the compressed part is fixedly connected on described
The bottom of the frame is fixed in the bottom end of one threaded rod, the supporting part, and the supporting part matches with the compressed part.
3. a kind of centralising device for pipeline docking according to claim 2, it is characterised in that: the frame includes branch
Support part and U type connecting rod part, the side of the support portion and the U type connecting rod part are hinged, and it is fixed that the other side of the support portion is equipped with
Position block, the other side of the U type connecting rod part are equipped with fixed block, and the fixed block is hinged with limit and hooks, the limit hook with it is described
Locating piece matches.
4. a kind of centralising device for pipeline docking according to claim 1, it is characterised in that: the rotating member includes
Rotating bar, fixing seat and turntable, the fixing seat are fixedly connected on total pedestal, and the rotating bar passes through the fixation
One end of seat, the rotating bar is equipped with first gear, and shaft, the folder are connected between the turntable and total pedestal
Tight device is fixedly connected on the turntable, and the bottom of the turntable is equipped with second gear, the first gear and described second
Gear is meshed.
5. it is according to claim 4 it is a kind of for pipeline docking centralising device, it is characterised in that: the rotating bar it is another
One end is equipped with handle.
6. a kind of centralising device for pipeline docking according to claim 1, it is characterised in that: the amplitude of fluctuation limit
Determining device includes limiting pedestal, limit sleeve and telescopic adjustment part, two restriction pedestals to be symmetrically disposed on total guide rail,
The restriction pedestal is flexibly connected with total guide rail, and the telescopic adjustment part is fixedly connected on the top for limiting pedestal,
The limit sleeve is fixedly connected on the telescopic adjustment part.
7. a kind of centralising device for pipeline docking according to claim 6, it is characterised in that: two restriction bottoms
Connecting plate is fixedly connected between the bottom end of seat.
8. a kind of centralising device for pipeline docking according to claim 6, it is characterised in that: the telescopic adjustment part
Including adjustment base, the second threaded rod, adjusting block, adjusting bracket and limited block, the adjustment base is fixedly connected on the restriction
The top of pedestal, the adjusting block are fixedly connected on the top of the adjustment base, and the limited block is fixedly connected on the tune
The top of pedestal is saved, the limited block is located at the two sides of the adjusting block, and second threaded rod passes through the limited block, described
Second threaded rod is equipped with the second nut, and second nut is tightened against the two sides of the adjusting block, and the adjusting bracket is welded in institute
The end of the second threaded rod is stated, the limit sleeve is fixedly connected between the adjusting bracket, and the two sides of the adjusting block, which are equipped with, to be slided
The bottom of slot, the adjusting bracket is equipped with sliding block, and the sliding block is positioned in the chute.
9. a kind of centralising device for pipeline docking according to claim 1, it is characterised in that: set on total pedestal
Have a fixed device of rotating member, the fixed device of the rotating member include firm banking, pushing block with guide rod cylinder, the pushing block
Across the firm banking, one end of the pushing block is equipped with U-shaped folder set, and the U-shaped folder set matches with the rotating member, institute
State the other end that the pushing block is set to guide rod cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811589012.7A CN109664063B (en) | 2018-12-25 | 2018-12-25 | Centering device for pipeline butt joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811589012.7A CN109664063B (en) | 2018-12-25 | 2018-12-25 | Centering device for pipeline butt joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109664063A true CN109664063A (en) | 2019-04-23 |
| CN109664063B CN109664063B (en) | 2020-10-23 |
Family
ID=66147604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811589012.7A Active CN109664063B (en) | 2018-12-25 | 2018-12-25 | Centering device for pipeline butt joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109664063B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110318547A (en) * | 2019-06-19 | 2019-10-11 | 广州城建职业学院 | A kind of building pipe the service of connection devices |
| CN110434544A (en) * | 2019-07-16 | 2019-11-12 | 嵊州市越通非开挖建设有限公司 | A kind of method of adjustable pipeline multi-angle docking |
| CN112325013A (en) * | 2021-01-06 | 2021-02-05 | 北京航天试验技术研究所 | Automatic butt joint device |
| CN113732385A (en) * | 2021-08-03 | 2021-12-03 | 渝能（集团）有限责任公司 | Water and electricity pipeline strutting arrangement |
| CN114211194A (en) * | 2021-12-31 | 2022-03-22 | 四川华体照明科技股份有限公司 | Push device for welding lamp post |
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| CN112325013B (en) * | 2021-01-06 | 2021-04-27 | 北京航天试验技术研究所 | Automatic butt joint device |
| CN113732385A (en) * | 2021-08-03 | 2021-12-03 | 渝能（集团）有限责任公司 | Water and electricity pipeline strutting arrangement |
| CN113732385B (en) * | 2021-08-03 | 2023-01-20 | 渝能（集团）有限责任公司 | Water and electricity pipeline strutting arrangement |
| CN114211194A (en) * | 2021-12-31 | 2022-03-22 | 四川华体照明科技股份有限公司 | Push device for welding lamp post |
| CN114211194B (en) * | 2021-12-31 | 2024-01-30 | 四川华体照明科技股份有限公司 | Pushing device for lamp pole welding |
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| Publication number | Publication date |
|---|---|
| CN109664063B (en) | 2020-10-23 |
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Effective date of registration: 20221229 Address after: No. 1, Dongcheng Pianhengda Road, Yunpu Industrial Zone, Huangpu District, Guangzhou, Guangdong 510000 Patentee after: GUANGZHOU SOUTHERN PIPELINE CO.,LTD. Address before: Room 1109, 11th floor, 555 Guanhe South Road, Sanjiang street, Shengzhou City, Shaoxing City, Zhejiang Province Patentee before: SHENGZHOU YUETONG NON-EXCAVATION CONSTRUCTION Co.,Ltd. |