CN116927236A - Integrated sleeve cage structure of single pile foundation of fan - Google Patents
Integrated sleeve cage structure of single pile foundation of fan Download PDFInfo
- Publication number
- CN116927236A CN116927236A CN202310907814.2A CN202310907814A CN116927236A CN 116927236 A CN116927236 A CN 116927236A CN 202310907814 A CN202310907814 A CN 202310907814A CN 116927236 A CN116927236 A CN 116927236A
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- ring beam
- steel cylinder
- cage
- cylinder device
- single pile
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 93
- 239000010959 steel Substances 0.000 claims abstract description 93
- 230000001681 protective effect Effects 0.000 claims abstract description 14
- 239000011376 self-consolidating concrete Substances 0.000 claims abstract description 8
- 238000010008 shearing Methods 0.000 claims abstract description 7
- 241000282326 Felis catus Species 0.000 claims description 9
- 230000000903 blocking effect Effects 0.000 claims description 5
- 230000009193 crawling Effects 0.000 claims description 4
- 239000002002 slurry Substances 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 11
- 238000003466 welding Methods 0.000 abstract description 9
- 238000009434 installation Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 239000011440 grout Substances 0.000 description 7
- 239000004567 concrete Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000011150 reinforced concrete Substances 0.000 description 3
- 238000005056 compaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
- E02D27/425—Foundations for poles, masts or chimneys specially adapted for wind motors masts
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
- F03D13/25—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors specially adapted for offshore installation
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Foundations (AREA)
Abstract
The invention relates to an integrated sleeve cage structure of a single pile foundation of a fan, which comprises a single pile body, wherein a sleeve cage device is sleeved outside the single pile body, the sleeve cage device comprises a steel cylinder device, a ring beam, an upright post, an outer platform, a ship leaning piece, a bottom layer ladder stand, a rest platform and a ladder stand with a protective cage, a middle layer ladder stand with the protective cage is fixedly arranged between the bottom layer ring beam and the middle layer ring beam, and a top layer ladder stand with the protective cage is fixedly arranged between the middle layer ring beam and the top layer ring beam; the steel cylinder device is characterized in that a grouting pipeline is arranged on the outer wall of the steel cylinder device, a plurality of annular steel bar shearing keys are arranged on the inner wall of the steel cylinder device from bottom to top, and high-strength self-compacting concrete is arranged in the steel cylinder device to form a grouting structure. The invention adopts a steel cylinder structure in the most frequent ship berthing area, has no welding procedure and has no damage to welded joints; the construction is simple, and the offshore installation operation time is reduced.
Description
Technical Field
The invention relates to a foundation structure in the field of offshore wind power, in particular to a single pile foundation integrated sleeve cage structure of a fan.
Background
The single pile foundation adopts a steel pipe pile, and adopts a large pile sinking machine to drive into the seabed. The single pile foundation is most widely applied to the built offshore wind farm at present, and is particularly suitable for the sea areas with smaller single machine capacity, shallower water depth or medium water depth. Externally built Horns Rev,Such basic forms are used in offshore wind farms such as Utgrunden, arklow Bank, scroby Sands, kentish dates, etc. In recent years, due to the progress of construction technology, a single pile foundation has a transition-section-free type and gradually develops to a large diameter and a large water depth.
The grouting-free connecting section single-pile foundation main body structure is a large-diameter steel pipe pile, the pile body is provided with auxiliary structures such as berthing, climbing stairs and a platform, the top flange of the steel pipe pile is welded in advance during factory processing, and the pile sinking is directly connected with the bottom flange of the tower barrel through bolts. The outer diameter of the joint with the wind turbine tower is 6.0-10.0 m, the part of the water is transited to 10.0m through the conical section, and a single steel pipe pile with the diameter of 10.0m below the mud surface is positioned on the sea floor to bear the ocean environmental load such as wind, waves, currents and the like and the wind turbine load transferred by the upper tower. In order to reduce the operation time of offshore construction hoisting, auxiliary components such as an anti-collision component, an outer fan platform, a cat ladder, a cable pipe, a sacrificial anode and the like are designed into an integral sleeve cage structure, a pile body is provided with a connecting structure of the auxiliary components in advance, and the auxiliary components are arranged on the pile body after pile driving is completed.
In recent years, the development trend of offshore wind power is to open deep sea areas far away from the shore, which means that the offshore wind turbine foundation also develops to sea areas with deeper water depths further away from the shore, the offshore construction environment is only worse, and thus the construction risk is further increased. And meanwhile, the window for the offshore construction operation is more limited, and the window is used for rapidly completing the difficult task of the installation operation for offshore operators. Along with the rapid development of wind power projects, related engineering problems are also caused, wherein the most critical problem related to the structure of the sleeve cage is that the phenomenon of breakage of connecting upright posts of the sleeve cage is found, so that the sleeve cage is seriously damaged and cannot climb a ladder by a ship.
Disclosure of Invention
The invention aims to solve the technical problem of providing a fan single pile foundation integrated sleeve cage structure which can better solve the problems of damage to a ship berthing welding node and difficult construction, is simple in construction and reduces the offshore installation operation time.
The technical scheme adopted for solving the technical problems is as follows: the integrated type sleeve cage structure of the single pile foundation of the fan comprises a single pile body, wherein a sleeve cage device is sleeved outside the single pile body, the sleeve cage device comprises a steel cylinder device, a ring beam, a stand column, an outer platform, a ship leaning piece, a bottom layer ladder stand, a rest platform and a ladder stand with a protective cage, the ring beam comprises a bottom layer ring beam, a middle layer ring beam and a top layer ring beam, and the ladder stand with the protective cage comprises a ladder stand with the protective cage in the middle layer and a ladder stand with the protective cage in the top layer;
the ship comprises a ship body, a steel cylinder device, a ship body, a ship bottom crawling ladder, a bottom ring beam, a middle ring beam, a top ring beam, upright posts, an outer platform and a movable railing door, wherein the ship body and the bottom crawling ladder are symmetrically arranged on the left side and the right side of the outside of the steel cylinder device; the middle layer ring beam and the middle layer ring beam are fixedly provided with middle layer belt cage-protecting ladders, the middle layer ring beam and the top layer ring beam are fixedly provided with top layer belt cage-protecting ladders, and rest platforms are arranged between the bottom layer ladders and the middle layer belt cage-protecting ladders and between the middle layer belt cage-protecting ladders and the top layer belt cage-protecting ladders;
the steel cylinder device is characterized in that a grouting pipeline is arranged on the outer wall of the steel cylinder device, a plurality of annular steel bar shearing keys are arranged on the inner wall of the steel cylinder device from bottom to top, and high-strength self-compacting concrete is arranged in the steel cylinder device to form a grouting structure.
According to the scheme, the inner diameter of the steel cylinder device is larger than the outer diameter of the single pile body.
According to the scheme, the inner diameters of the bottom layer ring beam, the middle layer ring beam and the top layer ring beam are slightly larger than the outer diameter of the single pile body.
According to the scheme, the axis of the steel cylinder device is coincident with the axis of the single pile body.
According to the scheme, the omega-shaped annular rubber ring for ensuring slurry leakage blocking in an interference protection state is arranged between the steel cylinder device and the single pile body.
The integrated sleeve cage structure of the single pile foundation of the fan has the following beneficial effects:
1. according to the invention, a steel cylinder structure is adopted in the most frequent ship berthing area, no welding process is adopted, no welding joint damage exists, no bracket is required to be welded on the single pile body, the top of the steel cylinder structure is connected with the ring beam through welding, and the inner diameter of the ring beam is slightly larger than the outer diameter of the single pile so as to ensure that the integrated sleeve cage can smoothly pass through the single pile main body structure;
2. the steel bar shearing key is arranged on the inner wall of the steel cylinder device and used for increasing the bond strength of reinforced concrete, ensuring the strength and rigidity of a grouting structure, and an omega-shaped annular rubber ring arranged at the lower part of an annular gap between the steel cylinder structure of the steel cylinder device and a pile plays a role in grouting and blocking;
3. the invention has simple construction and reduces the operation time of offshore installation.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic structural view of an integrated sleeve cage structure of a single pile foundation of a fan of the invention;
FIG. 2 is a schematic cross-sectional view of the boat rest and ladder of the present invention;
FIG. 3 is a schematic diagram of the connection structure of the steel cylinder device and the ring beam and the ladder stand of the invention;
FIG. 4 is a sectional view of the gap grouting section of the steel cylinder device of the present invention;
fig. 5 is a schematic structural view of a steel bar shear key adopted inside the steel cylinder device of the invention;
FIG. 6 is a schematic diagram of the structure of an omega-shaped rubber ring arranged between a steel cylinder device and a single pile body;
in the figure: 1. the movable railing door, 2, the outer platform, 3, the ladder with the protection cage, 301, the ladder with the protection cage in the middle layer, 302, the ladder with the protection cage in the top layer, 4, the ring beam, 401, the ring beam of the bottom layer, 402, the ring beam of the middle layer, 403, the ring beam of the top layer, 5, the rest platform, 6, the ladder of the bottom layer, 7, the steel cylinder device, 8, the ship leaning piece, 9, the pile body of a single pile, 11, the grouting structure, 12, the bar shearing key, 13, the grouting distribution groove, 14, the omega annular rubber ring, 15, the upright post, 16, the grouting pipeline, 160 and the grouting distribution groove.
Detailed Description
For a clearer understanding of technical features, objects and effects of the present invention, a detailed description of embodiments of the present invention will be made with reference to the accompanying drawings.
As shown in fig. 1-6, in the integrated sleeve cage structure of the single pile foundation of the fan, a sleeve cage device is sleeved outside a single pile body 9, the sleeve cage device comprises a steel cylinder device 7, a ring beam 4, a column 15, an outer platform 2, a ship leaning piece 8, a bottom layer cat ladder 6, a rest platform 5 and a ladder with a protection cage 3, the ring beam 4 comprises a bottom layer ring beam 401, a middle layer ring beam 402 and a top layer ring beam 403, and the ladder with a protection cage 3 comprises a middle layer ladder with a protection cage 301 and a ladder with a protection cage 302.
The ship leaning piece 8 and the bottom layer ladder 6 are symmetrically and fixedly arranged on the left side and the right side of the outside of the steel cylinder device 7, the bottom layer ladder 6 is arranged inside the ship leaning piece 8, the bottom layer ring beam 401, the middle layer ring beam 402 and the top layer ring beam 403 are fixedly arranged on the upper part of the steel cylinder device 7 from bottom to top, upright posts 15 are fixedly arranged between the bottom layer ring beam 401 and the middle layer ring beam 402 and between the middle layer ring beam 402 and the top layer ring beam 403, an outer platform 2 is fixedly arranged on the top layer ring beam 403, and a movable railing door 1 is arranged on the outer platform 2; a middle layer cage-carrying cat ladder 3 is fixedly arranged between the bottom layer ring beam 401 and the middle layer ring beam 402, a top layer cage-carrying cat ladder 302 is fixedly arranged between the middle layer ring beam 402 and the top layer ring beam 403, and a rest platform 5 is arranged between the bottom layer cat ladder 6 and the middle layer cage-carrying cat ladder 301 and between the middle cage-carrying cat ladder 301 and the top layer cage-carrying cat ladder 302; the inner diameters of the bottom ring beam 401, the middle ring beam 402 and the top ring beam 403 are slightly larger than the outer diameter of the single pile body 9. The top of the steel cylinder device 7 is connected with the bottom ring beam 401 through welding, and the inner diameter of the bottom ring beam 401 is slightly larger than the outer diameter of the single pile body 9 so as to ensure that the integrated sleeve cage can smoothly pass through the single pile main body structure. The steel cylinder device 7 is connected with the bottom ring beam 401 frame through welding.
The outer wall of the steel cylinder device 7 is provided with grouting pipelines 16, and the number of the grouting pipelines 16 is determined according to the construction progress requirement. The steel cylinder device 7 inner wall sets up from the supreme a plurality of annular reinforcing bar shear key 12 that set up down, be provided with high strength from compact concrete in the steel cylinder device 7 and form grouting structure 11, high strength from compact concrete exists the bond with reinforcing bar shear key 12, guarantee structural joint strength and rigidity, grout distribution groove 13 sets up at steel cylinder device 7 inner wall, grout pipeline is at steel cylinder device 7 outer wall, through pipeline connection to grout distribution groove 13, the purpose is in order to pass through grout pipeline 16 with the grout material, grout pipeline 160 is connected to grout distribution groove 13 of steel cylinder inner wall, carry to the filling. The inner diameter of the steel cylinder device 7 is larger than the outer diameter of the single pile body 9, and the inner diameter of the steel cylinder device 7 is generally about 400-500 mm. The bottom ring beam 401, the middle ring beam 402 and the top ring beam 403 play roles in pre-limiting after hoisting and converting the connection between the steel cylinder device 7 and the frame structure, and the axis of the steel cylinder device 7 coincides with the axis of the single pile body 9. An omega-shaped rubber ring 14 for ensuring slurry leakage blocking in an interference protection state is arranged between the steel cylinder device 7 and the single pile body 9, and the omega-shaped rubber ring 14 is in the interference protection state. The single pile body 9 and the steel cylinder device 7 are connected through high-strength non-shrinkage self-compacting concrete.
In the preferred embodiment of the invention, the steel cylinder device 7 is combined with a steel frame structure, the steel frame structure consists of a column 15 and a ring beam 4, the steel cylinder device 7 is adopted in the area where the ship berths most frequently, the situation of welding joint damage does not exist in the area, the gap of the steel cylinder device 7 adopted in the area where the ship berths most frequently is filled with high-strength non-shrinkage self-compacting concrete through a grouting pipeline 16, rigid connection between the single pile body 9 and the steel cylinder device 7 is ensured, the grouting pipeline 16 is arranged on the outer wall of the steel cylinder device 7, the effect of conveying high-strength non-shrinkage self-compacting concrete to the gap between the steel cylinder device 7 and the single pile body 9 during grouting is achieved, the steel cylinder device 7 and the steel frame structure are connected through the ring beam welding, the inner diameter of the ring beam 4 is slightly larger than the outer diameter of the single pile body 9 so as to ensure that the integrated cage can smoothly pass through the main structure of the single pile body 9, and simultaneously ensure that the center line of the steel cylinder structure coincides with the center line of the single pile body 9 before grouting and after grouting, namely, the inner and outer concentric circles; welded steel bars are adopted as sensing and steel bar shearing keys 12 in the steel cylinder device 7, and the grip strength of reinforced concrete is increased after grouting; the lower part of the annular gap between the steel cylinder device 7 and the single pile body 9 is provided with an omega-shaped rubber ring 14, and the omega-shaped rubber ring 14 is in an interference protection state to ensure slurry leakage blocking, and can be compressed and deformed in the hoisting process.
In the preferred embodiment of the invention, the top is a movable railing door 1 and an outer platform 2, a support piece below the platform is formed by upright posts 15 and ring beams 4, the ring beams 4 are provided with a ladder 3 with a protective cage, the ladder 3 with the protective cage is used for operation and maintenance personnel to climb on the outer platform 2, and a rest platform 5 is arranged between the ladder 3 with the protective cage. The lowest part is composed of a steel cylinder device 7 and a ship leaning piece 8, and after the sleeve cage is integrally hoisted in place, self-compaction shrinkage-free high-strength grouting material is infused into an annular gap inside the steel cylinder device 7 through a grouting pipeline 16. The ship leaning piece 8 and the ladder 3 with the protection cage are welded on the steel cylinder device 7, and the steel cylinder device 7 is sleeved on the single pile body 9. The cylindrical gap grouting section area consists of a ring beam 4, a steel cylinder device 7 and a grouting structure 11. The steel bars are used as steel bar shearing keys 12 in the steel cylinder device 7, and the bond strength of the reinforced concrete is increased after grouting. The lower part of the steel cylinder device 7 is provided with a grouting pipeline 16, grouting materials enter the annular gap through an external grouting pipeline to form an internal grouting distribution groove 13, the sequential completion of the initial grouting setting time and the final grouting time is ensured, the grouting materials are sealed by adopting an omega-shaped rubber ring 14 for bottom protection, and the omega-shaped rubber ring 14 is in an interference protection state.
The construction process of the invention is as follows: the steel cylinder device 7 is prefabricated on land and hoisted at sea, and the primary adjustment after hoisting ensures the centering of the axis of the steel cylinder structure; the high-strength non-shrinkage self-compaction concrete is directly poured into the gap between the steel cylinder device 7 and the single pile body 9 through a grouting pipeline 16 arranged on the outer wall of the steel cylinder device 7; the annular rubber ring is omega-shaped and is in a compressible interference protection state and is used for plugging high-strength self-compacting concrete; the concrete is high-strength shrinkage-free self-compacting concrete and is used for connecting the steel cylinder device 7 and the single pile body 9. The bond strength exists between the concrete and the steel inner cylinder steel bar shear key 12, so that the strength and the rigidity of the grouting structure 11 are ensured.
The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the claims, which are to be protected by the present invention.
Claims (5)
1. The integrated type sleeve cage structure of the single pile foundation of the fan comprises a single pile body and is characterized in that a sleeve cage device is sleeved outside the single pile body, the sleeve cage device comprises a steel cylinder device, a ring beam, an upright post, an outer platform, a ship leaning piece, a bottom layer cat ladder, a rest platform and a ladder with a protective cage, the ring beam comprises a bottom layer ring beam, a middle layer ring beam and a top layer ring beam, and the ladder with the protective cage comprises a ladder with the protective cage in the middle layer and a ladder with the protective cage in the top layer;
the ship comprises a ship body, a steel cylinder device, a ship body, a ship bottom crawling ladder, a bottom ring beam, a middle ring beam, a top ring beam, upright posts, an outer platform and a movable railing door, wherein the ship body and the bottom crawling ladder are symmetrically arranged on the left side and the right side of the outside of the steel cylinder device; the middle layer ring beam and the middle layer ring beam are fixedly provided with middle layer belt cage-protecting ladders, the middle layer ring beam and the top layer ring beam are fixedly provided with top layer belt cage-protecting ladders, and rest platforms are arranged between the bottom layer ladders and the middle layer belt cage-protecting ladders and between the middle layer belt cage-protecting ladders and the top layer belt cage-protecting ladders;
the steel cylinder device is characterized in that a grouting pipeline is arranged on the outer wall of the steel cylinder device, a plurality of annular steel bar shearing keys are arranged on the inner wall of the steel cylinder device from bottom to top, and high-strength self-compacting concrete is arranged in the steel cylinder device to form a grouting structure.
2. The integrated sleeve cage structure of a single pile foundation of a blower of claim 1 wherein said steel cylinder means has an inner diameter greater than an outer diameter of the single pile body.
3. The integrated sleeve cage structure of a single pile foundation of a fan according to claim 1, wherein the inner diameters of the bottom layer ring beam, the middle layer ring beam and the top layer ring beam are slightly larger than the outer diameter of the single pile body.
4. The integrated sleeve cage structure of a single pile foundation of a fan according to claim 1, wherein the axis of the steel cylinder device coincides with the axis of the single pile body.
5. The integrated sleeve cage structure of the single pile foundation of the fan according to claim 1, wherein an omega-shaped rubber ring for ensuring slurry leakage blocking in an interference protection state is arranged between the steel cylinder device and the single pile body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310907814.2A CN116927236A (en) | 2023-07-21 | 2023-07-21 | Integrated sleeve cage structure of single pile foundation of fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310907814.2A CN116927236A (en) | 2023-07-21 | 2023-07-21 | Integrated sleeve cage structure of single pile foundation of fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116927236A true CN116927236A (en) | 2023-10-24 |
Family
ID=88380195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310907814.2A Pending CN116927236A (en) | 2023-07-21 | 2023-07-21 | Integrated sleeve cage structure of single pile foundation of fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116927236A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117166819A (en) * | 2023-11-02 | 2023-12-05 | 南通润邦海洋工程装备有限公司 | Marine wind power pile cover cage reset equipment |
-
2023
- 2023-07-21 CN CN202310907814.2A patent/CN116927236A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117166819A (en) * | 2023-11-02 | 2023-12-05 | 南通润邦海洋工程装备有限公司 | Marine wind power pile cover cage reset equipment |
| CN117166819B (en) * | 2023-11-02 | 2023-12-26 | 南通润邦海洋工程装备有限公司 | Marine wind power pile cover cage reset equipment |
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