CN116275847A - Welding construction method for crown plates between ultra-large jacket and steel pipe piles - Google Patents
Welding construction method for crown plates between ultra-large jacket and steel pipe piles Download PDFInfo
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- CN116275847A CN116275847A CN202310201507.2A CN202310201507A CN116275847A CN 116275847 A CN116275847 A CN 116275847A CN 202310201507 A CN202310201507 A CN 202310201507A CN 116275847 A CN116275847 A CN 116275847A
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- crown plate
- steel pipe
- pipe pile
- jacket
- crown
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 52
- 239000010959 steel Substances 0.000 title claims abstract description 52
- 238000010276 construction Methods 0.000 title claims abstract description 25
- 238000003466 welding Methods 0.000 title claims abstract description 23
- 230000002093 peripheral effect Effects 0.000 claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 230000002349 favourable effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Images
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
- B23K37/053—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
-
- 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
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/06—Tubes
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
Abstract
The application discloses a welding construction method for crown plates between an ultra-large jacket and a steel pipe pile, which comprises the steps of manufacturing a plurality of crown plate units and a plurality of limiting structures for positioning the crown plate units, wherein connecting pieces are arranged on the outer sides of the crown plate units, the limiting structures are provided with sliding grooves, and the connecting pieces are in sliding connection in the sliding grooves; then swinging the limiting structure to an upright state, sliding down the crown plate unit under the guiding action of the sliding groove, inserting the lower end of the crown plate unit into a gap between the jacket sleeve and the steel pipe pile body, completing the positioning step of a plurality of crown plate units one by one, surrounding the outer peripheral surface of the steel pipe pile body, limiting the steel pipe pile body, and enabling the axis of the steel pipe pile body to coincide with the axis of the jacket sleeve; the crown plate unit and the steel pipe pile body are welded firstly, and then the crown plate unit and the jacket sleeve are welded. The utility model provides an effect that improves connection quality between jacket sleeve and the steel-pipe pile.
Description
Technical Field
The application relates to the field of steel pipe pile construction, in particular to a welding construction method for crown plates between an ultra-large jacket and a steel pipe pile.
Background
Along with the acceleration of the urban process, the offshore wind power projects are more and more, the offshore wind power projects adopt ultra-long steel pipe piles, and the ultra-large inclined pile sleeve type jacket is utilized for positioning, inserting and driving construction.
In the related art, for the steel-pipe pile of being convenient for inserts the jacket, jacket telescopic internal diameter needs to be greater than the steel-pipe pile external diameter, when adopting super large inclined pile telescopic jacket construction, often because of being connected between super large jacket and the steel-pipe pile and not reaching standard, the upper structure easily takes place accidents such as slope to influence the construction quality of the whole booster station in steel-pipe pile upper portion, consequently still has the improvement room.
Disclosure of Invention
In order to improve the connection quality between the jacket and the steel pipe pile, the application provides a crown plate welding construction method between the ultra-large jacket and the steel pipe pile.
The application provides a crown plate welding construction method between ultra-large jacket and steel pipe pile, which adopts the following technical scheme:
a welding construction method for crown plates between an ultra-large jacket and steel pipe piles comprises the following steps:
s1: early preparation: manufacturing a plurality of crown plate units and a plurality of limiting structures for positioning the crown plate units, wherein connecting pieces are arranged on the outer sides of the crown plate units, sliding grooves are formed in the limiting structures, and the connecting pieces are connected in the sliding grooves in a sliding mode;
s2: positioning the crown plate: the limiting structure is swung to an upright state, the extending direction of the sliding groove is parallel to the axis of the jacket sleeve, the crown plate units slide downwards under the guiding action of the sliding groove, the lower ends of the crown plate units are inserted into gaps between the jacket sleeve and the steel pipe pile body, the positioning steps of the crown plate units are completed one by one, the crown plate units encircle the outer peripheral surface of the steel pipe pile body, the steel pipe pile body is limited, and the axis of the steel pipe pile body coincides with the axis of the jacket sleeve;
s3: welding the crown plate: the crown plate unit and the steel pipe pile body are welded firstly, and then the crown plate unit and the jacket sleeve are welded.
Through adopting above-mentioned technical scheme, weld and enclose into crown-shaped location structure with polylith crown plate unit in the telescopic clearance of steel-pipe pile body and jacket, play spacing and firm effect to the steel-pipe pile for steel-pipe pile and jacket sleeve keep coaxial line setting, are favorable to reducing the upper portion structure of steel-pipe pile and take place accidents such as slope, adopt limit structure's guide effect, are favorable to crown plate to fall the position accurate and unbiased, are favorable to improving the connection quality of steel-pipe pile body, jacket and crown plate.
Preferably, the jacket sleeve outer peripheral surface is detachably connected with hoops, and the limiting structures are circumferentially distributed on the hoop outer peripheral surface at equal intervals.
Through adopting above-mentioned technical scheme, make limit structure equidistant distribution at jacket sleeve outer peripheral face, need not to fix a position limit structure again, be favorable to improving the efficiency of construction, the detachable connection of staple bolt simultaneously is convenient for retrieve limit structure, is favorable to improving limit structure's utilization ratio.
Preferably, the limit structure is a limit rod, the end part of the limit rod is hinged to the peripheral surface of the anchor ear, the chute is arranged on the side part of the limit rod, and the length direction of the chute is consistent with the length direction of the limit rod.
Through adopting above-mentioned technical scheme, can be when using limit structure, put limit lever to upright state again, improved limit structure's flexibility.
Preferably, the lower end of the crown plate unit is provided with a toe.
By adopting the technical scheme, the crown plate is conveniently connected with the jacket sleeve.
Preferably, the connecting piece comprises a connecting block which is slidably connected in the chute.
By adopting the technical scheme, the stability of the crown plate unit in the falling position is improved.
Preferably, the limiting rod is penetrated with a through groove along the direction parallel to the rotation axis of the limiting rod, the length direction of the through groove is consistent with the length direction of the sliding groove, the through groove is communicated with the sliding groove, the connecting piece further comprises a bolt, and the connecting block is penetrated with a through hole; when connecting piece and limit structure, will in the connecting block inserts the spout, the through-hole and the logical groove intercommunication of connecting block, the bolt passes through groove and through-hole in proper order, the bolt slides in logical inslot.
By adopting the technical scheme, the fixed distance between the limiting rod and the crown plate unit is kept, so that the crown plate unit can be conveniently and accurately positioned.
Preferably, when the crown plate unit falls down, the limiting rod swings upwards towards the pipe orifice direction of the jacket sleeve, and when the side part of the limiting rod is in contact with the peripheral surface of the anchor ear, the length direction of the through groove is parallel to the axis of the jacket sleeve.
Through adopting above-mentioned technical scheme, staple bolt outer peripheral face plays the restriction effect to the gag lever post lateral part is as the sign of gag lever post position that falls with the mode of staple bolt outer peripheral face butt, along with the position of falling of imperial crown plate unit, makes gag lever post and imperial crown plate unit card steady jointly at jacket sleeve perisporium, thereby simplifies spacing mode and limit structure, is favorable to improving the efficiency of construction, reduces manufacturing cost.
In summary, the present application includes at least one of the following beneficial technical effects:
1. a plurality of crown plate units are welded and enclosed in the gap between the steel pipe pile body and the jacket sleeve to form a crown-shaped positioning structure, and the sliding grooves in the limiting structure are utilized to enable the crown plates to fall accurately and not to be biased, so that the connection quality of the steel pipe pile body, the jacket and the crown plates is improved;
2. the bottom of the crown plate unit is provided with the toe, so that the limiting rod and the crown plate unit are cooperatively matched and clamped on the peripheral wall of the jacket sleeve together, the limiting mode and the limiting structure are simplified, the construction efficiency is improved, and the production cost is reduced.
Drawings
Fig. 1 is a schematic view of a construction end state of a crown plate welding construction method between an oversized jacket and a steel pipe pile according to an embodiment of the present application.
Fig. 2 is a schematic diagram of a crown plate unit in a crown plate welding construction method between an oversized jacket and a steel pipe pile according to an embodiment of the present disclosure after the crown plate unit is located.
Fig. 3 is a diagram showing a positional relationship among a steel pipe pile body, a jacket sleeve and a crown plate unit in a method for welding a crown plate between an oversized jacket and a steel pipe pile according to an embodiment of the present disclosure.
Reference numerals illustrate: 1. jacket sleeve; 2. a steel pipe pile body; 3. a crown plate unit; 4. a limit rod; 421. a chute; 422. a through groove; 5. a connecting piece; 51. a connecting block; 52. a bolt; 6. and (5) hooping.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-3.
The embodiment of the application discloses a welding construction method for a crown plate between an ultra-large jacket and a steel pipe pile. Referring to fig. 1 and 2, the method comprises the steps of:
s1: early preparation: in the embodiment, the cross section of the jacket sleeve 1 is 2460mm multiplied by 50mm, the cross section of the steel pipe pile is 2200mm multiplied by 50mm, the crown plate is formed by combining a 80mm thick steel plate and a 130mm thick steel plate, and the steel pipe pile is transported to a construction site after coiled plates of manufacturers are shaped. And after the pile sinking of the steel pipe pile is in place and the jacket is integrally leveled, the crown plate welding construction can be carried out.
Before welding construction, a plurality of crown plate units 3 and a plurality of limiting structures for positioning the crown plate units 3 are manufactured. The bottom of the crown plate unit 3 is provided with a toe with 60 degrees of inclination. The limit structure is specifically a limit rod 4. The slide groove 421 is arranged on the side part of the limit rod 4, and the extending direction of the slide groove 421 is consistent with the length direction of the limit rod 4. In addition, the outer peripheral surface of jacket sleeve 1 can be dismantled and be connected with staple bolt 6, and a plurality of gag lever posts 4 circumference equidistant distribution is in staple bolt 6 outer peripheral surface, and gag lever post 4 tip articulates in staple bolt 6 outer peripheral surface, and the axis of revolution of gag lever post 4 is in same horizontal plane with staple bolt 6 to make gag lever post 4 can reciprocate.
The two sides of the limit rod 4 penetrate through the through groove 422 along the rotation axis direction of the limit rod 4, the through groove 422 is communicated with the sliding groove 421, and the extending direction of the through groove 422 is consistent with the extending direction of the sliding groove 421.
The connecting piece 5 is arranged on the outer side of the crown plate unit 3, the connecting piece 5 comprises a connecting block 51 and a bolt 52, wherein the connecting block 51 is welded and fixed on the outer side of the crown plate unit 3, a through hole is formed in the connecting plate in a penetrating mode, when the connecting piece 5 and the limiting structure are connected, the connecting block 51 is inserted into the sliding groove 421, the through hole of the connecting block 51 is communicated with the through groove 422, the bolt 52 sequentially penetrates through the through groove 422 and the through hole, the connecting block 51 slides in the sliding groove 421, and the bolt 52 slides in the through groove 422.
S2: positioning the crown plate: referring to fig. 3, the stop lever 4 is swung to an upright state, when the stop lever 4 is in place, the side portion of the stop lever 4 is abutted against the outer peripheral surface of the anchor ear 6, the extending direction of the sliding groove 421 is parallel to the axis of the jacket sleeve 1, then the crown plate unit 3 slides down under the guiding action of the sliding groove 421, the lower end of the crown plate unit 3 is inserted into the gap between the jacket sleeve 1 and the steel pipe pile body 2, and the stop lever 4 and the crown plate unit 3 are clamped and stabilized on the peripheral wall of the jacket sleeve 1 together with the falling position of the crown plate unit 3.
After the step of locating the crown plate units 3 one by one is completed, the crown plate units 3 encircle the outer peripheral surface of the steel pipe pile body 2 to form a limiting structure in a round crown shape, so that the steel pipe pile body 2 is limited, and the axis of the steel pipe pile body 2 is overlapped with the axis of the jacket sleeve 1.
S3: welding the crown plate: the crown plate unit 3 and the steel pipe pile body 2 are welded firstly, and then the crown plate unit 3 and the jacket sleeve 1 are welded. And overlaying the gaps between the adjacent crown plate units 3. After the crown plate is welded and constructed, the reserved pile top section of the steel pipe pile body 2 can be cut, so that the upper structure of the steel pipe pile can be installed.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (7)
1. A welding construction method for crown plates between an oversized jacket and steel pipe piles is characterized by comprising the following steps of: the method comprises the following steps:
s1: early preparation: manufacturing a plurality of crown plate units (3) and a plurality of limiting structures for positioning the crown plate units (3), wherein connecting pieces (5) are arranged on the outer sides of the crown plate units (3), sliding grooves (421) are formed in the limiting structures, and the connecting pieces (5) are connected in the sliding grooves (421) in a sliding mode;
s2: positioning the crown plate: the limiting structure is swung to an upright state, the extending direction of the sliding groove (421) is parallel to the axis of the jacket sleeve (1), the crown plate unit (3) slides downwards under the guiding action of the sliding groove (421), the lower end of the crown plate unit (3) is inserted into a gap between the jacket sleeve (1) and the steel pipe pile body (2), the positioning steps of the crown plate units (3) are completed one by one, the crown plate units (3) encircle the outer peripheral surface of the steel pipe pile body (2), the steel pipe pile body (2) is limited, and the axis of the steel pipe pile body (2) coincides with the axis of the jacket sleeve (1);
s3: welding the crown plate: the crown plate unit (3) and the steel pipe pile body (2) are welded firstly, and then the crown plate unit (3) and the jacket sleeve (1) are welded.
2. The method for welding the crown plate between the ultra-large jacket and the steel pipe pile according to claim 1, which is characterized in that: the jacket sleeve (1) outer peripheral face is detachably connected with anchor clamps (6), and a plurality of limit structures are circumferentially distributed on the anchor clamps (6) outer peripheral face at equal intervals.
3. The welding construction method for the crown plate between the ultra-large jacket and the steel pipe pile, which is disclosed in claim 2, is characterized in that: the limiting structure is a limiting rod (4), the end part of the limiting rod (4) is hinged to the peripheral surface of the hoop (6), the sliding groove (421) is formed in the side part of the limiting rod (4), and the length direction of the sliding groove (421) is consistent with the length direction of the limiting rod (4).
4. The welding construction method for the crown plate between the ultra-large jacket and the steel pipe pile, according to claim 3, is characterized in that: the lower end of the crown plate unit (3) is provided with a toe.
5. The method for welding the crown plate between the ultra-large jacket and the steel pipe pile, which is disclosed in claim 4, is characterized in that: the connecting piece (5) comprises a connecting block (51), and the connecting block (51) is connected in the sliding groove (421) in a sliding mode.
6. The welding construction method for the crown plate between the ultra-large jacket and the steel pipe pile, which is disclosed in claim 5, is characterized in that: the limiting rod (4) is penetrated with a through groove (422) along the direction parallel to the rotation axis of the limiting rod (4), the length direction of the through groove (422) is consistent with the length direction of the sliding groove (421), the through groove (422) is communicated with the sliding groove (421), the connecting piece (5) further comprises a bolt (52), and the connecting block (51) is penetrated with a through hole; when connecting piece (5) and limit structure, will connecting block (51) insert in spout (421), the through-hole and the logical groove (422) of connecting block (51) communicate, bolt (52) pass through groove (422) and through-hole in proper order, bolt (52) slide in logical groove (422).
7. The method for welding the crown plate between the ultra-large jacket and the steel pipe pile according to claim 6, which is characterized in that: when the crown plate unit (3) falls, the limiting rod (4) swings upwards towards the pipe orifice direction of the jacket sleeve (1), and when the side part of the limiting rod (4) is abutted against the peripheral surface of the anchor ear (6), the length direction of the through groove (422) is parallel to the axis of the jacket sleeve (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310201507.2A CN116275847B (en) | 2023-03-04 | 2023-03-04 | Welding construction method for crown plates between ultra-large jacket and steel pipe piles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310201507.2A CN116275847B (en) | 2023-03-04 | 2023-03-04 | Welding construction method for crown plates between ultra-large jacket and steel pipe piles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116275847A true CN116275847A (en) | 2023-06-23 |
| CN116275847B CN116275847B (en) | 2023-11-10 |
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| CN202310201507.2A Active CN116275847B (en) | 2023-03-04 | 2023-03-04 | Welding construction method for crown plates between ultra-large jacket and steel pipe piles |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09119132A (en) * | 1995-10-25 | 1997-05-06 | Daido Concrete Kogyo Kk | Joint structure of cylindrical steel body and connecting method |
| JP2001140237A (en) * | 1999-11-17 | 2001-05-22 | Maruei Concrete Industries Co Ltd | Construction method for coping concrete to revetment steel pipe sheet pile and coping concrete block |
| JP2012121064A (en) * | 2010-12-10 | 2012-06-28 | Ihi Corp | Fixing structure, and pipe end welding device |
| CN204893326U (en) * | 2015-07-02 | 2015-12-23 | 湖南金海钢结构股份有限公司 | Steel pipe butt joint positioning device |
| JP2016000420A (en) * | 2014-06-12 | 2016-01-07 | 株式会社東芝 | Pipe groove aligning apparatus |
| CN106400764A (en) * | 2016-11-25 | 2017-02-15 | 平煤建工集团特殊凿井工程有限公司 | Assembled offshore single-pile foundation construction platform and construction process thereof |
| CN109014754A (en) * | 2018-11-01 | 2018-12-18 | 吴钰妍 | A kind of wind-driven generator shell auxiliary welding device |
| CN111496458A (en) * | 2020-04-08 | 2020-08-07 | 四川凯琳展科技有限公司 | Steel pipe connection auxiliary device and using method thereof |
| CN113073653A (en) * | 2021-04-06 | 2021-07-06 | 中交第三航务工程局有限公司 | Grouting plugging system for rock-socketed section of inclined pile rock-socketed jacket by' post-pile method |
| CN213672643U (en) * | 2020-08-04 | 2021-07-13 | 中交第四航务工程局有限公司 | Thin-walled steel pipe pile strengthen hoop and welding bearing structure based on spiral welding |
| CN113235573A (en) * | 2021-03-30 | 2021-08-10 | 深圳金信城市建设有限公司 | Municipal bridge steel pipe pile construction structure and construction method |
-
2023
- 2023-03-04 CN CN202310201507.2A patent/CN116275847B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09119132A (en) * | 1995-10-25 | 1997-05-06 | Daido Concrete Kogyo Kk | Joint structure of cylindrical steel body and connecting method |
| JP2001140237A (en) * | 1999-11-17 | 2001-05-22 | Maruei Concrete Industries Co Ltd | Construction method for coping concrete to revetment steel pipe sheet pile and coping concrete block |
| JP2012121064A (en) * | 2010-12-10 | 2012-06-28 | Ihi Corp | Fixing structure, and pipe end welding device |
| JP2016000420A (en) * | 2014-06-12 | 2016-01-07 | 株式会社東芝 | Pipe groove aligning apparatus |
| CN204893326U (en) * | 2015-07-02 | 2015-12-23 | 湖南金海钢结构股份有限公司 | Steel pipe butt joint positioning device |
| CN106400764A (en) * | 2016-11-25 | 2017-02-15 | 平煤建工集团特殊凿井工程有限公司 | Assembled offshore single-pile foundation construction platform and construction process thereof |
| CN109014754A (en) * | 2018-11-01 | 2018-12-18 | 吴钰妍 | A kind of wind-driven generator shell auxiliary welding device |
| CN111496458A (en) * | 2020-04-08 | 2020-08-07 | 四川凯琳展科技有限公司 | Steel pipe connection auxiliary device and using method thereof |
| CN213672643U (en) * | 2020-08-04 | 2021-07-13 | 中交第四航务工程局有限公司 | Thin-walled steel pipe pile strengthen hoop and welding bearing structure based on spiral welding |
| CN113235573A (en) * | 2021-03-30 | 2021-08-10 | 深圳金信城市建设有限公司 | Municipal bridge steel pipe pile construction structure and construction method |
| CN113073653A (en) * | 2021-04-06 | 2021-07-06 | 中交第三航务工程局有限公司 | Grouting plugging system for rock-socketed section of inclined pile rock-socketed jacket by' post-pile method |
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| Publication number | Publication date |
|---|---|
| CN116275847B (en) | 2023-11-10 |
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Effective date of registration: 20240119 Address after: 200120, Room 1006A, No. 958 Lujiazui Ring Road, Pudong New Area, Shanghai Patentee after: Shanghai Shenergy New Energy Investment Co.,Ltd. Address before: Room 105-39999, No.6 Baohua Road, Hengqin New District, Zhuhai City, Guangdong Province Patentee before: CRCC HARBOUR & CHANNEL ENGINEERING BUREAU GROUP Co.,Ltd. |