CN112078728B - Novel torpedo anchor based on bionics and construction method thereof - Google Patents
Novel torpedo anchor based on bionics and construction method thereof Download PDFInfo
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- CN112078728B CN112078728B CN202010959661.2A CN202010959661A CN112078728B CN 112078728 B CN112078728 B CN 112078728B CN 202010959661 A CN202010959661 A CN 202010959661A CN 112078728 B CN112078728 B CN 112078728B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/24—Anchors
- B63B21/26—Anchors securing to bed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/24—Anchors
- B63B21/26—Anchors securing to bed
- B63B21/29—Anchors securing to bed by weight, e.g. flukeless weight anchors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/24—Anchors
- B63B21/26—Anchors securing to bed
- B63B2021/265—Anchors securing to bed by gravity embedment, e.g. by dropping a pile-type anchor from a certain height
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Abstract
The invention provides a novel fish-thunder anchor based on bionics and a construction method thereof, wherein the novel fish-thunder anchor comprises an anchor body, an anchor rod, anchor wings, an anchor tip and a spiral telescopic mechanism; the negative Poisson ratio material is additionally arranged on the anchor wing or the anchor body, and the anti-pulling bearing capacity of the torpedo anchor is improved by utilizing the characteristics of tensile expansion and compression contraction of the negative Poisson ratio material; based on the shark skin bionics principle, the surface structure of the anchor body is optimally designed, the water flow resistance in the installation and injection process is reduced, and the frictional resistance between the anchor body and the seabed soil body is increased in the uplifting working state; by using the bionics principle that the solen digs the ground for reference, through taut work anchor chain interlock spiral telescopic machanism after initial injection is accomplished for inside stock injects downwards, realizes the secondary and injects the soil body, improves anchor body resistance to plucking bearing capacity and stability.
Description
Technical Field
The invention relates to a deep sea mooring foundation, in particular to a novel fish-thunder anchor based on bionics and a construction method thereof.
Background
With the development of social economy, the demand of China on oil and gas resources is increasing day by day, and the development of ocean oil and gas resources is gradually shifted from shallow sea to deep sea in order to meet the ever-increasing demand of oil and gas energy. The cost of the fixed platform is sharply increased along with the increase of the operating water depth, so the fixed platform is generally only suitable for shallow sea, and the floating platform with relatively stronger applicability is mostly adopted in deep sea areas. The floating platform supports the weight of the upper part of the floating platform by means of the buoyancy of the floating platform, and the floating platform is anchored and positioned by a mooring system; the mooring system is a component of the deep sea floating structure and plays a crucial role in the operation safety of the deep sea floating structure. Common anchoring structures for floating platforms include suction anchors, drag anchors, normal force bearing anchors, suction mount plate anchors, and power mount anchors. Among them, the torpedo anchor is as one kind of power installation anchor and has the advantages that compared with other anchor types, various auxiliary devices are not needed, the installation is simple, the period is short, the economic cost is low, and the installation cost is less influenced along with the increase of water depth, and the torpedo anchor is widely considered as one of deep sea anchoring bases with the most application prospect.
Bionics is a science that mimics the special abilities of living things, and develops new machines or new technologies or solves the problems of mechanical technologies by understanding the structural and functional principles of living things. Evolutionary pressure has generally forced biological organisms, including animals and plants, to become highly optimized and efficient and thus highly desirable for human reference. The shark with the speed of the sea has a perfect streamline shape, so that the swimming resistance is reduced, and meanwhile, the rough microstructure-three-dimensional interlocking rib structure on the skin surface can improve the fluid structure and the flowing state of a turbid current boundary layer flowing through the shark, thereby greatly contributing to the resistance reduction. For example, the American space agency applies a sharkskin-like rib structure to the surface of an aircraft to reduce drag, which reduces its flight drag by 6.6%. The 'fast skin' imitation sharkskin swimsuit developed by SPEEDO company is also colorful in Olympic Games in 2000, the fabric of the 'fast skin' imitation sharkskin swimsuit is similar to the skin of sharks, toothed grooves are distributed on the surface of the 'fast skin' imitation sharkskin swimsuit, and the resistance borne by a swimmer can be reduced by 4%; bivalve shellfish such as solen have evolved into an efficient and compact underwater tunneling method, which tunnels the feet of the axe downwards and pushes the shell upwards, then contracts the bivalve transversely to make blood flow into the feet of the axe to cause the feet of the axe to become congested into an anchor shape, and finally pulls the upper shell downwards to complete a tunneling cycle by taking the feet of the axe as an anchor point. Amos Winter and the like develop a water bottom anchoring robot by simulating the principle of solen tunneling, the robot adopts a pneumatic double-piston and wedge-shaped mechanism to realize downward detection of the mechanism and transverse movement of a shell, and can realize autonomous anchoring after tunneling to a certain depth.
Negative poisson's ratio material is an ongoing emerging topic in the field of materials that is receiving wide attention from scholars. The Poisson's ratio of common materials is positive, and the neck-thinning phenomenon occurs in stretching and the transverse volume is enlarged in compression. While a negative poisson's ratio material expands perpendicular to the direction of tensile stress when it is stretched and contracts when it is compressed. Negative poisson's ratio materials and structures are mainly classified into the following four categories: natural negative poisson's ratio material, cellular negative poisson's ratio material, metallic negative poisson's ratio material, multiple and composite negative poisson's ratio material. The material has great advantages in the aspects of shear resistance, indentation resistance, fracture resistance, curved surface isotropy, permeability variability and energy absorption performance, and the application of the negative Poisson's ratio material at present relates to a plurality of fields of artificial prostheses, textile materials, intelligent sensors, intelligent filters, molecular filters, protective pads, shock absorbers and sound insulators.
Before the invention, the Chinese invention patent ' a torpedo anchor capable of deepening the anchoring length ' (patent number: ZL202010027392.6) ' provides a torpedo anchor which increases the penetration depth of an anchor body by adding a rotary blade at the anchor head and starting an internal motor to drive the blade to rotate and cut a soil layer when a hard soil layer is penetrated. The invention discloses a hydraulic impact type torpedo anchor (patent number: ZL201711025452.5), and provides a hydraulic impactor which is additionally arranged in an anchor body and provides power for the torpedo anchor to penetrate into a stratum, so that the torpedo anchor can vertically penetrate, and the pulling resistance and the bearing capacity of the torpedo anchor are improved. The invention discloses a fish and thunder anchor with a ring thorn (patent number ZL201610533751.9) and an assembled fish and thunder anchor with a ring thorn (patent number ZL201610531458.9), wherein 4 tail wings are symmetrically arranged on the periphery of an anchor body, and a puncture mechanism is arranged in the anchor body, so that puncture in the anchor body is driven to penetrate into a soil body by puncture under the action of tension of an anchor chain, soil pressure on the upper part of the puncture body is increased, and the uplift resistance bearing capacity of the anchor body is improved. The invention discloses a novel torpedo anchor with an expandable anchor head and an installation method thereof (patent number ZL201710937047.4), and provides a method for improving the stress area of an anchor body and further improving the uplift bearing capacity of the anchor body by expanding a conical plate of the torpedo anchor head. The Chinese invention patent 'a torpedo anchor with an extensible tail wing' (patent number: ZL201810699755.3) and 'a torpedo anchor with a locally-deployable tail wing' (patent number: ZL201810706192.6) proposes a method for improving the contact area of an anchor body and a soil body by extending the tail wing or a plurality of tail wings, thereby improving the uplift bearing capacity of the anchor body. The existing method is mainly developed from the aspect of improving the contact area of the anchor body and the seabed soil, or an additional power source is required to be provided to enhance the penetration performance, and the technical innovation aiming at improving the falling speed of the anchor body in water and increasing the interface friction coefficient of the anchor body material, the anchor body material and the seabed soil is still relatively insufficient; therefore, based on the bionics principle, it is very important to develop a novel torpedo anchor and a construction method thereof considering the negative poisson's ratio material and the secondary penetration of the anchor rod.
Disclosure of Invention
In order to further improve the initial installation speed, the bearing capacity and the stability of the traditional fish-and-thunder anchor, the invention provides a novel fish-and-thunder anchor based on bionics and a construction method thereof.
The technical scheme of the invention is as follows:
a novel fish-thunder anchor based on bionics comprises an anchor body, an anchor rod, anchor wings, an anchor tip and a spiral telescopic mechanism.
The anchor rod is located the inside below of anchor body, the anchor point is located the top of anchor rod, the anchor wing is fixed at the anchor body afterbody, spiral telescopic machanism is located the inside top of anchor body.
The diameter of the anchor rod is 0.75-1.2 m, the length of the anchor rod is 12.5-15.0 m, and threads are arranged from the top end to 1/3-1/4 positions of the anchor rod.
The anchor body is 0.8-1.3 m in diameter, 12.5-15.0 m in length, cylindrical in shape, has a shark skin-like structure on the outer surface, and is internally provided with a baffle plate for limiting the vertical movement of the linkage rotor.
The spiral telescopic mechanism comprises an anchoring screw rod, a guide slideway, a radial and axial combined bearing and a linkage rotor. The anchoring screw rod penetrates out of the top of the anchor body through the guide slideway, the top end of the anchoring screw rod is provided with an anchor eye connected with the working anchor chain, and the outer side of the anchoring screw rod is provided with a longitudinal groove. And longitudinal protrusions corresponding to the screw grooves are arranged in the guide slide ways to limit the rotation of the anchoring screw. The upper end and the lower end of the linkage rotor are rigidly connected with radial and axial joint bearings which are respectively sleeved on the anchoring screw rod and the anchor rod, and a support rod is arranged in the middle of the rotor to enhance the rigidity.
The anchor wing is made of 2-4 trapezoidal steel plates, the included angle is 90-180 degrees, the plate width is 0.5-1.5 m, the plate length is 1/3-2/3, the anchor length is 0.07-0.08 m, negative poisson ratio materials are additionally arranged outside the anchor wing or are used with a bionic shark skin structure in an inserting mode, the anchor wing can be completely attached to the outer surface or horizontally arranged in 2-5 rows along the direction of the anchor body, and the distance between each row is 0.05-0.10 m.
The bionic shark skin structure is a three-dimensional interlocking rib structure, and the thickness of the bionic shark skin structure is 0.01-0.02 m.
The surface of the anchor wing is additionally provided with a negative Poisson ratio material 15, and the anti-pulling bearing capacity of the torpedo anchor is improved by utilizing the tensile expansion characteristic of the negative Poisson ratio material;
the surface of the anchor body is designed with a shark skin-imitated structure, so that the water flow resistance in the installation and penetration process of the anchor body is reduced, and in addition, the shark skin structure can be opened and wraps part of soil body during drawing, so that the pulling resistance is increased; by using the bionic principle of the solen digging, after the initial injection is completed, the spiral telescopic mechanism is linked by the tension working anchor chain, so that the inner anchor rod is secondarily injected into the soil body downwards, and the stability and the stress area of the anchor body are improved.
The negative Poisson ratio material can be a concave polygonal structure, a rotary polygonal structure, a chiral structure, a perforated plate structure, an interlocking polygonal structure, a metal material with a staggered rib structure and an egg frame structure, an FCC crystal, a multiple Poisson ratio material, polyurethane foam or a polytetrafluoroethylene composite negative Poisson ratio material, and the negative Poisson ratio material can be one or a combination of a plurality of materials, and the thickness of the negative Poisson ratio material is 0.02-0.03 m.
The shape of the anchor tip is elliptical or conical, the diameter is 0.75-1.2 m, and the length is 1.5-5.0 m.
A construction method of a novel fish-thunderbolt based on bionics comprises the following steps:
the first step is as follows: according to the design requirement, a bionic sharkskin structure material with the thickness of 0.01-0.02 m is prepared, evenly distributed on the outer surface of the anchor body, and a concave hexagonal honeycomb negative Poisson ratio material with the thickness of 0.02-0.03 m is additionally arranged on the anchor wing.
The second step is that: after the torpedo anchor is hung to the designed height, the installation anchor chain is released, the torpedo anchor freely falls and penetrates into the seabed soil body by means of the gravity of the torpedo anchor, and the resistance of the torpedo anchor in water can be effectively reduced by the bionic shark skin structure on the outer surface. In the injection process, the anchoring screw and the anchor rod are positioned in the anchor body.
The third step: after the torpedo anchor is installed and penetrates to the depth of 1.5-3 times of the anchor long soil body, the working anchor chain is tensioned, and the anchoring screw rod is gradually and vertically pulled out by the anchor chain due to the limitation of the guide slideway.
The fourth step: in the process that the anchoring screw rod extends out, the radial and axial combined bearings start to rotate to drive the linkage rotor rigidly connected with the bearings to synchronously rotate.
The fifth step: the radial and axial combined bearing of the anchor rod is driven by the rotor to rotate, the anchor rod is limited by the direction of the upper thread of the anchor rod and gradually extends downwards, secondary penetration into the soil body is realized, and the penetration is stopped after the maximum stroke is reached.
And a sixth step: after the secondary penetration of the anchor rod is finished, the torpedo anchor enters a working state, and the negative Poisson ratio material at the anchor wing is expanded in a tensile way to increase the stress area; the anchor body is in a shark skin-imitated structure, and is opened and wraps a part of soil body when being drawn, so that the resistance to drawing is increased; the secondary injection of stock has effectively increased the area of contact of fish and thunder anchor with the soil body, and then has improved the whole resistance to plucking bearing capacity of fish and thunder anchor.
The technical advantages of the invention are as follows: the external surface of the fish-thunder anchor is designed by applying the bionic principle of sharkskin, the resistance of water flow in the injection process is reduced to obtain a larger initial injection speed, and meanwhile, the sharkskin structure can be opened and wraps part of soil body during drawing to increase the resistance to pulling; the anti-pulling bearing capacity of the anchor wing is enhanced by utilizing the characteristics of the negative Poisson ratio material; by using the bionic principle of the solen digging, the spiral telescopic mechanism is designed, secondary injection can be carried out in the seabed soil body after primary penetration is finished, and the uplift bearing capacity and stability of the fish-thunder anchor are improved without the help of an additional power source.
Drawings
FIG. 1 is a schematic view of the internal anchor rod of the present invention in a pre-extended configuration;
FIG. 2 is a schematic view of the internal anchor of the present invention after it has been extended;
FIG. 3 is a front view of the present invention;
FIG. 4 is a schematic view of the structure of a shark skin rib;
in the figure: 1-anchor tip; 2-an anchor body; 3-anchor rod; 4-an anchor eye; 5-anchor wing; 6-anchoring screw; 7-longitudinal grooves; 8-radial axial combined bearing; 9-a guide slideway; 10-a baffle plate; 11-linking the rotor; 12-a support bar; 13-a ball bearing; 14-a baffle; 15-negative poisson's ratio material; 16-imitation shark skin structure.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and technical solutions:
example 1:
as shown in fig. 1-4, a novel fish-thunder anchor based on bionics comprises an anchor body 2, an anchor rod 3, anchor wings 5, an anchor tip 1 and a spiral telescopic mechanism; the anchor rod 3 is positioned below the inside of the anchor body 2, the anchor tip 1 is positioned at the top end of the anchor rod 3, the anchor wing 5 is fixed at the tail part of the anchor body 2, and the spiral telescopic mechanism is positioned above the inside of the anchor body 2;
the diameter of the anchor rod 3 is 0.75-1.2 m, the length of the anchor rod is 12.5-15.0 m, and threads are arranged from the top end to 1/3-1/4 of the anchor rod; the anchor body 2 is 0.8-1.3 m in diameter, 12.5-15.0 m in length, cylindrical in shape, provided with a shark skin-like structure 16 on the outer surface, and provided with a baffle 14 inside to limit the vertical movement of the linkage rotor; the bionic shark skin structure is a three-dimensional interlocking rib structure, and the thickness of the bionic shark skin structure is 0.01-0.02 m;
the spiral telescopic mechanism comprises an anchoring screw rod 6, a guide slideway 9, a radial and axial combined bearing 8 and a linkage rotor 11; the anchoring screw 6 penetrates out of the top of the anchor body through a guide slideway 9, an anchor eye 4 arranged at the top end of the anchoring screw 6 is connected with the working anchor chain, and a longitudinal groove 7 is arranged on the outer side of the anchoring screw; longitudinal protrusions corresponding to the screw grooves are arranged in the guide slide 9 to limit the rotation of the anchoring screw; the upper end and the lower end of the linkage rotor 11 are rigidly connected with a radial and axial joint bearing 8 which is respectively sleeved on the anchoring screw 6 and the anchor rod 3, and a support rod 12 is arranged in the middle of the rotor to strengthen the rigidity;
the anchor wing 5 is 2-4 trapezoidal steel plates, the included angle is 90-180 degrees, the plate width is 0.5-1.5 m, the plate length is 1/3-2/3 of the anchor length, the plate thickness is 0.07-0.08 m, a negative poisson ratio material is additionally arranged outside the anchor wing 5 or is used with a bionic sharkskin structure in an inserting mode, the anchor wing can be completely attached to the outer surface or horizontally arranged in 2-5 rows along the direction of an anchor body, and the distance between each row is 0.05-0.10 m.
Example 2:
according to the construction method of the novel torpedo anchor based on bionics, firstly, according to design requirements, the anchor rod 3 is 12.5-15.0 m long (12.5 m in the embodiment), 0.75-1.2 m in diameter (1 m in the embodiment), and threads are arranged from the top end to the bottom 1/3-1/4 (4 m in the embodiment). The anchor body 2 has a length of 12.5-15.0 m (13 m in this embodiment) and a diameter of 0.8-1.3 m (1.2 m in this embodiment). The anchor wing 5 has a width of 0.5 to 1.5m (1 m in the present embodiment), a length of 1/3 to 2/3 (7 m in the present embodiment), and a thickness of 0.07 to 0.08m (0.08 m in the present embodiment). The anchor tip 5 is oval or conical (conical in this embodiment), 1.5m to 5.0m long (3.5 m in this embodiment), and 0.75m to 1.2m in diameter (1 m in this embodiment). The anchor wing 5 is additionally provided with an inwards concave hexagonal honeycomb-shaped negative Poisson's ratio metal material, the thickness of the metal material is 0.02 m-0.03 m (0.02 m in the embodiment), 2-5 rows (5 rows in the embodiment) are horizontally arranged along the direction of the anchor body, and the distance between every two rows is 0.05 m-0.10 m (0.05 m in the embodiment). The bionic sharkskin structure 16 is uniformly distributed on the outer surface of the anchor body 2, and the thickness of the bionic sharkskin structure is 0.01 m-0.02 m (0.01 m in the embodiment).
Secondly, the torpedo anchor is lowered to 150m above the seabed, the installation anchor chain is released, the torpedo anchor freely falls and penetrates to the designed depth of the seabed by means of the self gravity of the torpedo anchor, and the underwater resistance can be effectively reduced by the bionic shark skin structure on the outer surface. In the process of penetration, the anchor rod 3 and the anchoring screw 6 are positioned in the anchor body 2.
Then, after the torpedo anchor penetrates to the designed depth of the seabed soil body, the working anchor chain is tensioned, and the anchoring screw 6 is gradually and vertically pulled out by the anchor chain due to the limitation of the guide slideway 9.
Then, the radial and axial joint bearing 8 of the anchoring screw 6 starts to rotate in the extending process, and the linkage rotor 11 rigidly connected with the bearing is driven to rotate synchronously.
Meanwhile, the radial and axial combined bearing 8 of the anchor rod 3 is driven by the rotor 11 to rotate, the anchor rod 3 is limited by the direction of the upper thread of the anchor rod, the anchor rod gradually extends downwards to penetrate a soil body for the second time, the baffle 10 is clamped after the anchor rod reaches the maximum stroke of 4m, and the second penetration is finished.
Finally, the torpedo anchor enters a working state after the anchor rod 3 is penetrated for the second time, and the negative Poisson ratio material 15 at the anchor wing 5 expands in a tensile way to increase the stress area; the surface of the anchor body 2 is provided with the shark skin imitating structure 16 which is opened and wraps part of soil during drawing, so that the resistance to drawing is increased; meanwhile, the contact area of the torpedo anchor and the soil body is effectively increased through the secondary injection of the anchor rod 3, and the uplift resistance bearing capacity of the torpedo anchor is further improved.
Claims (4)
1. A novel fish-thunder anchor based on bionics is characterized by comprising an anchor body (2), an anchor rod (3), anchor wings (5), an anchor tip (1) and a spiral telescopic mechanism;
the anchor rod (3) is positioned below the inner part of the anchor body (2), the anchor tip (1) is positioned at the top end of the anchor rod (3), the anchor wing (5) is fixed at the tail part of the anchor body (2), and the spiral telescopic mechanism is positioned above the inner part of the anchor body (2);
the diameter of the anchor rod (3) is 0.75-1.2 m, the length of the anchor rod is 12.5-15.0 m, and threads are arranged from the top end to 1/3-1/4 of the anchor rod;
the anchor body (2) is 0.8-1.3 m in diameter, 12.5-15.0 m in length, cylindrical in shape, provided with a shark skin-like structure (16) on the outer surface, and internally provided with a baffle (14) for limiting the vertical movement of the linkage rotor; the shark skin imitation structure is a three-dimensional interlocking rib structure, and the thickness of the shark skin imitation structure is 0.01-0.02 m;
the spiral telescopic mechanism comprises an anchoring screw rod (6), a guide slideway (9), a radial and axial combined bearing (8) and a linkage rotor (11); the anchoring screw rod (6) penetrates out of the top of the anchor body through a guide slideway (9), an anchor eye (4) is arranged at the top end of the anchoring screw rod (6) and is connected with the working anchor chain, and a longitudinal groove (7) is arranged on the outer side of the anchoring screw rod; longitudinal protrusions corresponding to the screw grooves are arranged in the guide slide way (9) to limit the rotation of the anchoring screw; the upper end and the lower end of the linkage rotor (11) are rigidly connected with a radial and axial joint bearing (8) which is respectively sleeved on the anchoring screw rod (6) and the anchor rod (3), and a support rod (12) is arranged in the middle of the rotor to enhance the rigidity;
the anchor wing (5) is made of 2-4 trapezoidal steel plates, the included angle is 90-180 degrees, the plate width is 0.5-1.5 m, the plate length is 1/3-2/3, the anchor length is 0.07-0.08 m, negative Poisson ratio materials are additionally arranged outside the anchor wing (5) or are used with an imitation shark skin structure in an inserting mode, the anchor wing can be completely attached to the outer surface or horizontally arranged in 2-5 rows along the direction of an anchor body, and the distance between each row is 0.05-0.10 m.
2. The novel fish-thunder anchor based on bionics of claim 1, wherein the negative poisson's ratio material is a concave polygon structure, a rotating polygon structure, a chiral structure, a perforated plate structure, an interlocking polygon structure, a metal material with a staggered rib structure and an egg shelf structure, an FCC crystal, a multiple poisson's ratio material, polyurethane foam or a polytetrafluoroethylene composite negative poisson's ratio material, and the negative poisson's ratio material is one or a combination of several of the above materials, and has a thickness of 0.02m to 0.03 m.
3. A new type of fish-thunder anchor based on bionics according to claim 1 or 2, characterised in that the shape of the anchor tip (1) is oval or conical, with a diameter of 0.75 m-1.2 m and a length of 1.5 m-5.0 m.
4. The construction method of the novel fish-thunderbolt based on bionics as claimed in claim 1 or 2, characterized by comprising the following steps:
the first step is as follows: according to the design requirement, a shark skin-imitated structure material with the thickness of 0.01-0.02 m is uniformly distributed on the outer surface of the anchor body (2), and a honeycomb-shaped negative Poisson ratio material with the thickness of 0.02-0.03 m and concave hexagonal sides is additionally arranged on the anchor wing (5);
the second step is that: after the torpedo anchor is hung to the designed height, the mounting anchor chain is released, the torpedo anchor freely falls and penetrates into the seabed soil body by means of the self gravity of the torpedo anchor, and the shark skin imitating structure (16) on the outer surface can effectively reduce the resistance of the torpedo anchor in water; in the injection process, the anchoring screw rod and the anchor rod (3) are positioned in the anchor body (2);
the third step: when the torpedo anchor is installed and penetrates to 1.5-3 times of the depth of the anchor long soil body, the working anchor chain is tensioned, and the anchoring screw rod (6) is gradually and vertically pulled out by the anchor chain due to the limitation of the guide slideway (9);
the fourth step: in the process that the anchoring screw rod (6) extends out, the radial and axial combined bearing starts to rotate to drive a linkage rotor (11) rigidly connected with the bearing to synchronously rotate;
the fifth step: the radial and axial combined bearing (8) of the anchor rod (3) is driven by the rotor to rotate, the anchor rod (3) is limited by the direction of the upper thread and gradually extends downwards, secondary penetration into the soil body is realized, and the penetration is stopped after the maximum stroke is reached;
and a sixth step: after the secondary injection of the anchor rod (3) is finished, the torpedo anchor enters a working state, and the negative poisson ratio material at the anchor wing (5) expands in a tensile way to increase the stressed area; the anchor body (2) imitates the sharkskin structure (16) and opens and wraps up and holds partial soil body when drawing, increase the resistance to plucking; the secondary injection of the anchor rod (3) effectively increases the contact area of the torpedo anchor and the soil body, and further improves the overall uplift bearing capacity of the torpedo anchor.
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| CN202010959661.2A CN112078728B (en) | 2020-09-14 | 2020-09-14 | Novel torpedo anchor based on bionics and construction method thereof |
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| CN112078728B true CN112078728B (en) | 2021-07-06 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113232772B (en) * | 2021-05-10 | 2022-11-29 | 江苏科技大学 | Octopus-imitated anchoring and positioning device |
| CN113338330A (en) * | 2021-07-05 | 2021-09-03 | 中山大学 | Puncture-like suction type mouthpart suction anchor |
| CN115245139B (en) * | 2021-11-23 | 2023-08-01 | 浙江海洋大学 | Pile anchor for marine culture facilities |
| CN114435539B (en) * | 2022-01-25 | 2023-02-24 | 南京林业大学 | Device and method for driving torpedo anchor by spiral dumping |
| CN114987689B (en) * | 2022-05-05 | 2023-10-27 | 南京林业大学 | Device for repeatedly hammering to deepen penetration depth of fish mine anchor and working method |
| CN114852255B (en) * | 2022-05-26 | 2023-11-21 | 江苏科技大学 | Light torpedo anchor |
| CN115303417B (en) * | 2022-08-05 | 2023-12-05 | 江苏海洋大学 | Recoverable flank exhibition fish thunder anchor suitable for deep sea anchor |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105644720B (en) * | 2016-03-25 | 2017-06-23 | 中国石油大学(华东) | Modified torpedo anchor |
| CN106005262B (en) * | 2016-07-07 | 2017-10-31 | 天津大学 | A kind of band stickleback mine anchor |
| CN208149556U (en) * | 2018-05-14 | 2018-11-27 | 大连理工大学 | A kind of novel light power installation anchor |
| CN108860475B (en) * | 2018-06-29 | 2020-07-17 | 合肥学院 | Torpedo anchor capable of spraying bubbles around anchor body during installation |
| CN108945306B (en) * | 2018-09-06 | 2024-03-26 | 重庆大学 | Assembled improved torpedo anchor |
| CN111055967A (en) * | 2020-01-10 | 2020-04-24 | 同济大学 | Torpedo anchor capable of deepening anchoring length |
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