CN215804389U - Temporary casing for offshore wind power foundation drilling machine - Google Patents
Temporary casing for offshore wind power foundation drilling machine Download PDFInfo
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- CN215804389U CN215804389U CN202122344667.1U CN202122344667U CN215804389U CN 215804389 U CN215804389 U CN 215804389U CN 202122344667 U CN202122344667 U CN 202122344667U CN 215804389 U CN215804389 U CN 215804389U
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- wind power
- offshore wind
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- casing
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Abstract
The utility model discloses a temporary casing of an offshore wind power foundation drilling machine, relates to the technical field of offshore wind power foundation installation, and solves the problems that a conventional vibration hammer cannot insert an offshore wind power single pile foundation into a rock layer, an ultra-large drilling machine is needed for drilling, and stable and efficient construction is difficult to achieve in the prior art. The pile hammer comprises a pile casing main body, wherein a secondary driving section is detachably connected to the top of the pile casing main body, and the diameter of the secondary driving section is decreased upwards until the size of the top is matched with that of the pile hammer; and the casing main body is also provided with a plurality of drilling machine flanges for mounting a drilling machine. The effect that offshore wind power single pile foundation installation work can be carried out to the rock layer to that can high-efficient stable has been reached, work efficiency is improved.
Description
Technical Field
The utility model relates to the technical field of offshore wind power foundation installation, in particular to a temporary casing of an offshore wind power foundation drilling machine.
Background
Fujian sea area geological conditions is mostly the rock, and upper portion is closely knit sand bed or strong morals and manners layer, and the lower part is mostly hard granite layer, and conventional vibratory hammer can't insert the offshore wind power single pile basis in the rock layer, need use super large-scale rig to drill, then in planting the hole with single pile basis, prior art is difficult to accomplish the construction of stable efficient.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a temporary casing of an offshore wind power foundation drilling machine, which can efficiently and stably install an offshore wind power single-pile foundation for a rock layer, and improves the working efficiency.
The technical purpose of the utility model is realized by the following technical scheme:
a temporary pile casing of an offshore wind power foundation drilling machine comprises a pile casing main body, wherein a secondary pile section is detachably connected to the top of the pile casing main body, and the diameter of the secondary pile section is decreased upwards until the size of the top is matched with that of a pile hammer; and the casing main body is also provided with a plurality of drilling machine flanges for mounting a drilling machine.
Furthermore, the lower end of the replacing section is provided with a connecting flange, and the replacing section is detachably connected to the casing main body through the connecting flange.
Further, the connecting flange is detachably connected to the drill flange.
Furthermore, the top end of the replacing section is provided with a replacing flange.
Furthermore, the diameter of the replacing flange is 0-1 m smaller than that of the piling hammer.
Furthermore, the periphery of the connecting flange is also provided with a plurality of lifting lugs.
Furthermore, the periphery of the replacing section is provided with a plurality of guide hooks, and the lifting rope passes through the corresponding guide hooks and then is lifted through the lifting lugs.
Furthermore, the periphery of the casing main body is connected with a connecting platform, the drilling machine is connected to the connecting platform through a flange, and the connecting flange extends downwards and abuts against the connecting platform.
Furthermore, the connecting flange further comprises an abutting plate abutting against the outer peripheral wall of the pile casing main body, and the height of the abutting plate increases progressively along the direction close to the central axis of the pile casing main body.
In conclusion, the utility model has the following beneficial effects:
the utility model utilizes the added displacement section to make the diameter of the displacement flange transition from 7m to 5m, and the displacement flange is matched with a conventional pile hammer (the diameter is 5.5 m);
2. a replacing flange is additionally arranged, so that the hammering force of a piling hammer is uniformly distributed during piling;
3, integrating the drilling machine fixing platform on the temporary casing, replacing the drilling machine fixing platform with a drilling machine fixing flange, and hoisting at one time to improve the construction efficiency;
4. the temporary steel casing wall ensures that the upper dense sand layer or the strongly weathered layer has enough support and does not collapse;
5. after the construction is finished, the whole body is lifted away and reused, so that the construction cost is greatly reduced.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
In the figure, 1, a casing main body; 2. a replacing section; 21. replacing and installing a flange; 22. a guide hook; 3. a drill flange; 31. connecting the platform; 4. a connecting flange; 41. lifting lugs; 42. abutting against the board.
Detailed Description
The following further describes the embodiments of the present invention with reference to the drawings, and the present embodiment is not to be construed as limiting the utility model.
The temporary pile casing of the offshore wind power foundation drilling machine comprises a steel pile casing main body 1, wherein a replacing section 2 is detachably connected to the top of the pile casing main body 1, and the diameter of the replacing section 2 is gradually decreased until the size of the top is matched with the size of a pile hammer.
As shown in fig. 1, the top end of the secondary driving section 2 is connected with a secondary driving flange 21 through a screw, and the diameter of the secondary driving flange 21 is 0-1 m smaller than that of the pile driving hammer; in the embodiment, the diameter of the conventional pile driving hammer is 5.5m, the diameter of the secondary flange 21 is 5m, and the diameter of the bottom of the secondary section 2 is 7 m.
As shown in fig. 1, the lower end of the replacing section 2 is connected with a connecting flange 4 through a screw, the replacing section 2 is detachably connected to the casing main body 1 through the connecting flange 4, and in this embodiment, the connecting flange 4 is fixed to the casing main body 1 through a screw.
As shown in fig. 1, two drilling machine flanges 3 for installing a drilling machine are symmetrically arranged on the casing main body 1, and the connecting flange 4 is detachably connected to the drilling machine flanges 3 through screws. In the embodiment, the connecting platform 31 is welded on the periphery of the casing main body 1, the drill flange 3 is connected to the connecting platform 31, and the connecting flange 4 extends downwards and abuts against the connecting platform 31;
in order to facilitate the guiding installation of the replacing section 2 on the casing main body 1, the connecting flange 4 further comprises a butting plate 42 butting against the outer peripheral wall of the casing main body 1, and the height of the butting plate 42 is increased progressively along the direction close to the central axis of the casing main body 1.
As shown in fig. 1, for the convenience of hoisting, lifting lugs 41 are respectively welded on two sides of the periphery of the connecting flange 4; in order to avoid the problem that the replacement flange 2 is overturned and impacted on the casing main body 1 due to the gravity center problem when being hoisted independently, two guide hooks 22 are welded at the upper end of the periphery of the replacement section 2, and the lifting rope penetrates through the corresponding guide hooks 22 and then is hoisted through the lifting lug 41. In this embodiment, the guiding hook 22 has an anti-releasing buckle, and the anti-releasing buckle is tightly supported at the opening of the guiding hook 22 through a spring.
The working process is as follows:
1. driving in a temporary steel casing:
the diameter of a pile casing main body 1 is large, a conventional pile hammer cannot meet the size requirement, a lower opening of a secondary driving section 2 is connected with an upper opening of the pile casing main body 1 and a drilling machine flange 3, the diameter of the upper opening of the secondary driving section 2 is transited to 5m, and a secondary driving flange 21 is arranged;
a pile hammer is used for driving into the pile casing main body 1, and the pile casing main body 1 is driven to the upper surface of granite and stops driving;
2. positioning a drilling machine:
loosening the connecting bolts and lifting away the secondary driving section 2, and connecting and fixing a fixed flange plate on the drilling machine and a drilling machine flange 3 on the casing main body 1 by using the bolts;
3. drilling, the steel protects a dado, prevents the collapse:
the upper layer of geology is mainly a compact sand layer or a strongly weathered layer, so that the collapse is easy to occur, the mud retaining wall cannot ensure that the hole wall does not collapse, and the construction of the area is ensured to be finished after the pile casing main body 1 is used in the area;
4. and implanting a wind power single pile foundation, performing grouting operation, and recovering the temporary steel casing main body 1.
While the utility model has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the utility model.
Claims (9)
1. The utility model provides an offshore wind power foundation drilling machine protects a section of thick bamboo temporarily which characterized in that: the pile hammer comprises a pile casing main body (1), wherein a secondary driving section (2) is detachably connected to the top of the pile casing main body (1), and the diameter of the secondary driving section (2) is decreased upwards until the size of the top is matched with that of the pile hammer; the casing main body (1) is also provided with a plurality of drilling machine flanges (3) for mounting a drilling machine.
2. The offshore wind power foundation rig temporary casing of claim 1, wherein: the lower end of the replacing section (2) is provided with a connecting flange (4), and the replacing section (2) is detachably connected to the pile casing main body (1) through the connecting flange (4).
3. The offshore wind power foundation rig temporary casing of claim 2, wherein: the connecting flange (4) is detachably connected to the drill rig flange (3).
4. The offshore wind power foundation rig temporary casing of claim 1, wherein: and a replacing flange (21) is arranged at the top end of the replacing section (2).
5. The offshore wind power foundation rig temporary casing of claim 4, wherein: the diameter of the replacing flange (21) is 0-1 m smaller than that of the piling hammer.
6. The offshore wind power foundation rig temporary casing of claim 1, wherein: the periphery of the connecting flange (4) is also provided with a plurality of lifting lugs (41).
7. The offshore wind power foundation rig temporary casing of claim 6, wherein: the periphery of the replacing section (2) is provided with a plurality of guide hooks (22), and the lifting rope is lifted through the lifting lugs (41) after passing through the corresponding guide hooks (22).
8. The offshore wind power foundation rig temporary casing of claim 1, wherein: the periphery of the casing main body (1) is connected with a connecting platform (31), the drill flange (3) is connected to the connecting platform (31), and the connecting flange (4) extends downwards and abuts against the connecting platform (31).
9. The offshore wind power foundation rig temporary casing of claim 8, wherein: the connecting flange (4) further comprises a butt joint plate (42) butted on the peripheral wall of the pile casing main body (1), and the height of the butt joint plate (42) is increased progressively along the direction close to the central axis of the pile casing main body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122344667.1U CN215804389U (en) | 2021-09-27 | 2021-09-27 | Temporary casing for offshore wind power foundation drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122344667.1U CN215804389U (en) | 2021-09-27 | 2021-09-27 | Temporary casing for offshore wind power foundation drilling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215804389U true CN215804389U (en) | 2022-02-11 |
Family
ID=80166903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122344667.1U Active CN215804389U (en) | 2021-09-27 | 2021-09-27 | Temporary casing for offshore wind power foundation drilling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215804389U (en) |
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2021
- 2021-09-27 CN CN202122344667.1U patent/CN215804389U/en active Active
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