Attached barbed reinforced suction anchor

Abstract

The present invention provides an attached barb-type reinforced suction anchor, which belongs to the technical field of suction anchors. The reinforced suction anchor includes an anchor body, a barb mechanism and a hinge. The barb mechanism is arranged on the periphery of the anchor body through a hinge, so that when the barb mechanism is subjected to an upward force, the free end of the barb mechanism closes toward the anchor body with the hinge as the rotation center; when the barb mechanism is subjected to a downward force, the free end of the barb mechanism rotates away from the anchor body with the hinge as the rotation center, so that the bearing radius of the anchor body is expanded. When the attached barb-type reinforced suction anchor is subjected to an upward force, the barb mechanism is in a closed state, and the downward movement of the attached barb-type reinforced suction anchor is less hindered; when the attached barb-type reinforced suction anchor is in the soil layer and subjected to an upward pulling force, the barb structure is subjected to a downward force from top to bottom and is unfolded, and the bearing radius is expanded. Therefore, it can significantly improve the bearing capacity of the suction anchor in the vertical and horizontal directions.

Description

Technical Field

[0001] The present invention relates to the technical field of suction anchors, in particular to an attached barb-type reinforced suction anchor. Background Art

[0002] With the increasing development of offshore wind energy in shallow waters and the continued depletion of oil and natural gas reserves, the offshore industry is being forced to expand into deeper, more remote, and less explored environments. Suction anchors, due to their ease of installation, adaptability, and economic benefits, are increasingly being used as foundations for offshore anchoring systems. For example, these platforms, under the influence of marine conditions such as wind, waves, and currents, transmit cyclic loads to the suction anchor foundations, subjecting them to cyclic vertical uplift and lateral loads and weakening the soil surrounding the suction anchors. Furthermore, the superstructure, under marine loads, causes the mooring chains connected to the suction anchors to cyclically move, creating a groove in the seabed on one side of the mooring chain. All of these factors can reduce the ultimate bearing capacity of the suction anchors, threatening the stability and safety of the superstructure. Therefore, it is necessary to develop a device to strengthen the overall bearing capacity of the suction anchors, ensuring that they maintain both good uplift and lateral bearing capacity under these stresses. Summary of the Invention

[0003] In view of this, the present invention provides an attached barb-type reinforced suction anchor. When the attached barb-type reinforced suction anchor moves into the soil layer, the attached barb-type reinforced suction anchor is subjected to an upward force, and the barb mechanism is in a closed state, which has little hindrance to the downward movement of the attached barb-type reinforced suction anchor; when the attached barb-type reinforced suction anchor is in the soil layer and is subjected to an upward pulling force, the barb structure is subjected to a downward force from top to bottom and is expanded, and the bearing radius is expanded. Therefore, it can significantly improve the bearing capacity of the suction anchor in the vertical and horizontal directions, making it more suitable for practical use.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the attached barbed reinforced suction anchor provided by the present invention is as follows:

[0005] The attached barb-type reinforced suction anchor provided by the present invention comprises an anchor body (3), a barb mechanism (4) and a hinge.

[0006] The barb mechanism (4) is arranged on the outer periphery of the anchor body (3) through the hinge, so that:

[0007] When the barb mechanism (4) is subjected to an upward force, the free end of the barb mechanism (4) is closed toward the anchor body (3) with the hinge as the rotation center;

[0008] When the barb mechanism (4) is subjected to a downward force, the free end of the barb mechanism (4) rotates away from the anchor body (3) with the hinge as the rotation center, thereby expanding the bearing radius of the anchor body (3).

[0009] The attached barbed reinforced suction anchor provided by the present invention can be further implemented by adopting the following technical measures.

[0010] Preferably, the hinge comprises a connecting ear (5) and a rotating pin (6),

[0011] The barb mechanism (4) comprises a barb body,

[0012] The barb body comprises a first side wall (11), a second side wall (12) and a connecting portion (10); the first side wall (11) and the second side wall (12) are fixedly connected as a whole through the connecting portion (10); a semi-open accommodating space (20) is formed between the first side wall (11), the second side wall (12) and the connecting portion (10);

[0013] The first side wall (11) and the second side wall (12) are respectively provided with a first through hole (18) and a second through hole (19) at corresponding positions.

[0014] The connecting ear (5) is provided with a third through hole (17).

[0015] When the barb mechanism (4) is connected to the anchor body (3), the connecting ear (5) is contained by the semi-open accommodating space (20), so that the first through hole (18), the second through hole (19), and the third through hole (17) correspond to each other.

[0016] The rotating pin (6) passes through the first through hole (18), the second through hole (19) and the third through hole (17) at the same time.

[0017] Preferably, the bottom of the barb mechanism (4) forms a limiting step.

[0018] When the first protruding point (8) and the second protruding point (9) of the limiting step both abut against the outer wall of the anchor body (3), the barb mechanism (4) rotates to the maximum expansion limit position.

[0019] Preferably, the limiting step is a two-step step.

[0020] Preferably, the first raised point (8) and the second raised point (9) of the limiting step are rounded transitions.

[0021] Preferably, when the barb mechanism (4) rotates to the maximum deployment limit position, the angle α between the normal line of the barb mechanism (4) and the axis of the anchor body (3) is in the range of 60°-80°.

[0022] As a preference,

[0023] The transition portion (13) formed between the top surface (22) of the connecting ear (5) and the bottom surface (14) of the connecting ear (5) is rounded.

[0024] The angle γ between the normal of the bottom surface (14) of the connecting ear (5) and the axis of the anchor body (3) is the same as the angle α between the normal line of the barb mechanism (4) and the axis of the anchor body (3).

[0025] As a preference,

[0026] The free side of the first side wall (11) gradually decreases in distance from the middle position toward the free end of the first side wall (11) to the edge where the first side wall (11) is connected to the connecting portion (10), forming a first oblique side (15);

[0027] The free side of the second side wall (12) gradually decreases in distance from the middle position toward the free end of the second side wall (12) to the edge where the second side wall (12) is connected to the connecting portion (10), forming a second oblique side (16);

[0028] The first oblique side (15) and the second oblique side (16) are located on the same plane.

[0029] Preferably, the free end of the first oblique side (15), the free end of the second oblique side (16) and the free end of the second oblique side form a linear edge (21).

[0030] Preferably, the attached barbed reinforced suction anchor further comprises a convex body (4),

[0031] The convex body (4) is fixedly connected to the barb mechanism (4) via one side edge thereof, and the value range of the opening angle β between the convex body (4) and the plane of the barb mechanism (4) is 10°-20°.

[0032] Preferably, the attached barbed reinforced suction anchor further comprises a convex body (4),

[0033] The convex body (4) is fixedly connected to the linear edge (21) via one side edge thereof, and the value range of the opening angle β between the convex body (21) and the plane of the connecting portion (10) of the barb mechanism (4) is 10°-20°.

[0034] Preferably, the attached barbed reinforced suction anchor further comprises a fluid inlet and outlet (2),

[0035] The fluid inlet and outlet (2) are arranged on the top cover of the anchor body (3), so that the inner cavity of the anchor body (3) is connected to the outside through the fluid inlet and outlet (2).

[0036] Preferably, the attached barbed reinforced suction anchor further comprises a first connecting member (1) and a second connecting member (7).

[0037] The first connecting member (1) and the second connecting member (7) are respectively fixedly arranged on the anchor body (3).

[0038] The attached barbed reinforced suction anchor is connected to the outside via the first connecting piece (1) and the second connecting piece (7).

[0039] Preferably, the arrangement of the barb mechanisms (4) on the outer periphery of the anchor body (3) is divided into four layers, the lower two layers each containing four barb mechanisms (4), each barb mechanism (4) being spaced 90° on the outer periphery of the anchor body (3) by a central angle; the two layers of barb mechanisms (4) being staggered 45° on the outer periphery of the anchor body (3) by a central angle; the upper two layers each containing two barb mechanisms (4), each barb mechanism (4) being spaced 180° on the outer periphery of the anchor body (3) by a central angle; the two layers of barb mechanisms (4) being staggered 90° on the outer periphery of the anchor body (3) by a central angle.

[0040] When the attached barb-type reinforced suction anchor provided by the embodiment of the present invention is applied, when the attached barb-type reinforced suction anchor moves into the water layer 25 and the soil layer 26, the attached barb-type reinforced suction anchor is subjected to a force from bottom to top, and the barb mechanism 4 is in a closed state. Figure 8 As shown in the anchor body 23 with the barb mechanism in the closed state, there is little hindrance to the downward movement of the attached barb-type reinforced suction anchor; when the attached barb-type reinforced suction anchor is in the soil layer 26 and is subjected to an upward pulling force, the barb structure 4 is subjected to a force from top to bottom and is expanded, as shown in FIG. Figure 8As shown in the anchor body 24 with the barb mechanism in the deployed state, the load-bearing radius is expanded, and therefore, it can significantly improve the load-bearing capacity of the suction anchor in the vertical and horizontal directions. On the other hand, during the long-term movement of the anchor chain 28 of the anchor body 3, a seabed groove 27 will be cut into the seabed, which greatly reduces the vertical and horizontal load-bearing capacity of the suction anchor, especially the horizontal load-bearing capacity. Under the action of the attached barb-type suction anchor provided by the present invention, on a plane that is not parallel to the seabed groove 27, the barb mechanism 4 can also improve the horizontal load-bearing capacity of the attached barb-type suction anchor provided by the embodiment of the present invention, thereby further significantly increasing the load-bearing performance of the attached barb-type suction anchor provided by the embodiment of the present invention. The attached barb-type reinforced suction anchor provided by the embodiment of the present invention has different degrees of improvement on the vertical and horizontal load-bearing capacity of the suction anchor. Generally speaking, the increase in vertical load-bearing capacity is greater than the increase in horizontal load-bearing capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0042] Attachment Figure 1 A three-dimensional diagram of the overall structure of an attached barbed reinforced suction anchor provided by an embodiment of the present invention;

[0043] Attachment Figure 2 A three-dimensional diagram of the overall structure of the attached barb-type reinforced suction anchor provided in an embodiment of the present invention (wherein the barb mechanism at position D is removed);

[0044] Attachment Figure 3 For attachment Figure 1 A schematic diagram of the partially enlarged structure of part A;

[0045] Attachment Figure 4 For attachment Figure 1 A schematic diagram of the partially enlarged structure of part B;

[0046] Attachment Figure 5 For attachment Figure 1 A schematic diagram of the partially enlarged structure of part C in the middle;

[0047] Attachment Figure 6 For attachment Figure 2 A schematic diagram of the partially enlarged structure of part D in the middle;

[0048] Attachment Figure 7 A schematic diagram of the stereoscopic structure of a typical direction of the barb mechanism and the rotating pin used in the attached barb-type reinforced suction anchor provided by an embodiment of the present invention after cooperation;

[0049] Attachment Figure 8 A schematic diagram illustrating the application principle of an attached barbed reinforced suction anchor provided in an embodiment of the present invention;

[0050] Description of reference numerals:

[0051] 1-first connecting piece, 2-fluid inlet and outlet, 3-anchor body, 4-barb mechanism, 5-connecting ear, 6-rotating pin, 7-second connecting piece, 8-first protrusion, 9-second protrusion, 10-connecting portion, 11-first side wall, 12-second side wall, 13-transition portion, 14-bottom surface of connecting ear, 15-first oblique edge, 16-second oblique edge, 17-third through hole, 18-first through hole, 19-second through hole, 20-semi-open accommodating space, 21-linear edge, 22-top surface of connecting ear; 23-anchor body with barb mechanism in closed state, 24-anchor body with barb mechanism in extended state, 25-water layer, 26-soil layer, 27-seabed groove, 28-anchor chain. DETAILED DESCRIPTION

[0052] In view of this, the present invention provides an attached barb-type reinforced suction anchor. When the attached barb-type reinforced suction anchor moves into the soil layer, the attached barb-type reinforced suction anchor is subjected to an upward force, and the barb mechanism is in a closed state, which has little hindrance to the downward movement of the attached barb-type reinforced suction anchor; when the attached barb-type reinforced suction anchor is in the soil layer and is subjected to an upward pulling force, the barb structure is subjected to a downward force from top to bottom and is expanded, and the bearing radius is expanded. Therefore, it can significantly improve the bearing capacity of the suction anchor in the vertical and horizontal directions, making it more suitable for practical use.

[0053] To further illustrate the technical means and effectiveness of the present invention in achieving its intended objectives, the following, in conjunction with the accompanying drawings and preferred embodiments, provides a detailed description of the specific implementation, structure, features, and effectiveness of an attached barbed reinforced suction anchor proposed in accordance with the present invention. In the following description, different references to "one embodiment" or "embodiment" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics of one or more embodiments may be combined in any suitable manner.

[0054] The term "and / or" in this article is merely a description of the association relationship between associated objects, indicating that three relationships may exist. For example, A and / or B, specifically understood as: A and B may be included at the same time, A may exist alone, or B may exist alone, and any of the above three situations may exist.

[0055] See attached Figure 1 -Attached Figure 8The barbed reinforced suction anchor provided by an embodiment of the present invention includes an anchor body 3, a barb mechanism 4, and a hinge. The barb mechanism 4 is hingedly attached to the outer periphery of the anchor body 3. When an upward force is applied to the barb mechanism 4, the free end of the barb mechanism 4 rotates toward the anchor body 3 about the hinge. When a downward force is applied to the barb mechanism 4, the free end of the barb mechanism 4 rotates away from the anchor body 3 about the hinge, thereby expanding the bearing radius of the anchor body 3.

[0056] When the attached barb-type reinforced suction anchor provided by the embodiment of the present invention is applied, when the attached barb-type reinforced suction anchor moves into the water layer 25 and the soil layer 26, the attached barb-type reinforced suction anchor is subjected to a force from bottom to top, and the barb mechanism 4 is in a closed state. Figure 8 As shown in the anchor body 23 with the barb mechanism in the closed state, there is little hindrance to the downward movement of the attached barb-type reinforced suction anchor; when the attached barb-type reinforced suction anchor is in the soil layer 26 and is subjected to an upward pulling force, the barb structure 4 is subjected to a force from top to bottom and is expanded, as shown in FIG. Figure 8 As shown in the anchor body 24 with the barb mechanism in the deployed state, the load-bearing radius is expanded, and therefore, it can significantly improve the load-bearing capacity of the suction anchor in the vertical and horizontal directions. On the other hand, during the long-term movement of the anchor chain 28 of the anchor body 3, a seabed groove 27 will be cut into the seabed, which greatly reduces the vertical and horizontal load-bearing capacity of the suction anchor, especially the horizontal load-bearing capacity. Under the action of the attached barb-type suction anchor provided by the embodiment of the present invention, on a plane that is not parallel to the seabed groove 27, the barb mechanism 4 can also improve the horizontal load-bearing capacity of the attached barb-type suction anchor provided by the embodiment of the present invention, thereby further significantly increasing the load-bearing performance of the attached barb-type suction anchor provided by the embodiment of the present invention. The attached barb-type reinforced suction anchor provided by the embodiment of the present invention has different degrees of improvement on the vertical and horizontal load-bearing capacity of the suction anchor. Generally speaking, the increase in vertical load-bearing capacity is greater than the increase in horizontal load-bearing capacity.

[0057] The hinge includes a connecting ear 5 and a rotating pin 6. The barb mechanism 4 includes a barb body, which includes a first side wall 11, a second side wall 12, and a connecting portion 10. The first side wall 11 and the second side wall 12 are fixedly connected as a whole by the connecting portion 10, forming a semi-open accommodating space 20 between the first side wall 11, the second side wall 12, and the connecting portion 10. The first side wall 11 and the second side wall 12 are respectively provided with a first through hole 18 and a second through hole 19 at corresponding positions. The connecting ear 5 is provided with a third through hole 17. When the barb mechanism 4 is connected to the anchor body 3, the connecting ear 5 is enclosed by the semi-open accommodating space 20, so that the first through hole 18, the second through hole 19, and the third through hole 17 correspond to each other, and the rotating pin 6 passes through the first through hole 18, the second through hole 19, and the third through hole 17 at the same time. In this case, the attached barb-type reinforced suction anchor provided by the embodiment of the present invention can utilize the connecting ear 5, the rotating pin 6, and the semi-open accommodating space 20 of the barb mechanism 4 itself to achieve the connection between the barb mechanism 4 and the anchor body 3. The connection structure is simple and the cost is low. Moreover, when the parts are damaged, they are easy to replace and the cost is low.

[0058] The bottom of the barb mechanism 4 forms a limiting step. When the first raised point 8 and the second raised point 9 of the limiting step both abut against the outer wall of the anchor body 3, the barb mechanism 4 rotates to the maximum deployment limit position. In this case, the first raised point 8 and the second raised point of the limiting step can limit the maximum rotation and deployment angle of the barb mechanism 4 relative to the anchor body 3, which has a simple structure and low cost.

[0059] In this embodiment, the first raised point 8 and the second raised point 9 of the two steps are connected to form an oblique line, so the rotation and expansion limit of the barb mechanism 4 can be achieved through the two steps.

[0060] Among them, the first raised point 8 and the second raised point 9 of the limiting step have a rounded transition. In this case, the rounded transition can reduce the wear of the first raised point 8 and the second raised point 9, as well as the reduced adaptability between the barb mechanism 4 and the anchor body 3 of the attached barb-type reinforced suction anchor provided by the embodiment of the present invention caused by wear. After the adaptability is reduced, the limiting ability of the first raised point 8 and the second raised point 9 on the barb mechanism 4 is reduced. In extreme cases, the barb mechanism will be folded and lose the ability to rotate, expand, and expand the load-bearing radius. In addition, the rounded transition can also reduce the stress concentration of the barb mechanism 4 of the attached barb-type reinforced suction anchor provided by the embodiment of the present invention during the rotation process relative to the anchor body 3, thereby extending the service life of the attached barb-type reinforced suction anchor provided by the embodiment of the present invention.

[0061] When the barb mechanism 4 rotates to its maximum deployment limit position, the angle α between the normal line of the barb mechanism 4 and the axis of the anchor body 3 is in the range of 60°-80°. In this case, the barb mechanism 4 can not only provide a better load-bearing force in the numerical direction and horizontal direction, but also avoid the risk of the barb mechanism 4 falling off the anchor body 3 and failing due to the large vertical force borne by the barb mechanism 4 itself when the angle α between the normal line of the barb mechanism 4 and the axis of the anchor body 3 exceeds 80°, thereby improving application safety.

[0062] Among them, the transition portion 13 formed between the top surface 22 of the connecting ear 5 and the bottom surface 14 of the connecting ear 5 is rounded. The angle γ between the normal of the bottom surface 14 of the connecting ear 5 and the axis of the anchor body 3 is the same as the angle α between the normal line of the barb mechanism 4 and the axis of the anchor body 3. In this case, when the barb mechanism 4 of the attached barb-type reinforced suction anchor provided by the embodiment of the present invention rotates with the rotating pin 6 as the rotation center, the connecting ear 5 can use the transition portion 13 to provide a rotation support surface for the connecting portion 10 of the barb mechanism 4, ensuring the adaptability between the barb mechanism 4 and the connecting ear 5, so that the barb mechanism 4 of the attached barb-type reinforced suction anchor provided by the embodiment of the present invention can move more smoothly when rotating with the rotating pin 6 as the rotation center, thereby increasing the reconsideration life and operational reliability of the attached barb-type reinforced suction anchor provided by the embodiment of the present invention.

[0063] The free side of the first side wall 11 gradually decreases from the middle position toward the free end of the first side wall 11 to the side where the first side wall 11 connects with the connecting portion 10, forming a first oblique side 15. The free side of the second side wall 12 gradually decreases from the middle position toward the free end of the second side wall 12 to the side where the second side wall 12 connects with the connecting portion 10, forming a second oblique side 16. The first oblique side 15 and the second oblique side 16 are located on the same plane. In this case, by utilizing the sharp angle structure formed by the free ends of the first and second oblique sides 15, 16, when the barb mechanism 4 of the attached barb-type reinforced suction anchor provided in the embodiment of the present invention advances into the soil layer 26, the smaller area of ​​the sharp angle structure results in a greater pressure under the same force, thereby making it easier for the barb mechanism 4 of the attached barb-type reinforced suction anchor provided in the embodiment of the present invention to rotate and unfold.

[0064] The free end of the first oblique side 15 and the free end of the second oblique side of the second oblique side 16 form a linear edge 21. In this case, when the barb mechanism 4 of the barbed reinforced suction anchor provided in the embodiment of the present invention advances into the soil layer 26, the area of ​​the existing edge is smaller, and the pressure is greater under the same force, making it easier for the barb mechanism 4 of the barbed reinforced suction anchor provided in the embodiment of the present invention to rotate and unfold.

[0065] The attached barbed reinforced suction anchor further includes a protrusion 4. The protrusion 4 is fixedly connected to the barb mechanism 4 via one side edge thereof. The angle β between the protrusion 4 and the plane of the barb mechanism 4 ranges from 10° to 20°. In this case, when the barb mechanism 4 rotates to its maximum deployment limit position, the angle α between the normal of the barb mechanism 4 and the axis of the anchor body 3 ranges from 60° to 80°, and the angle β between the protrusion 4 and the plane of the barb mechanism 4 ranges from 10° to 20°. Combined with these two factors, when the barb mechanism 4 is deployed to its maximum deployment limit relative to the anchor body 3, the plane in which the protrusion 4 lies is nearly horizontal. Therefore, when the attached barbed reinforced suction anchor provided by the embodiment of the present invention is subjected to an upward pulling force, the protrusion 4 can directly bear the vertical force, thereby further enhancing the load-bearing capacity of the attached barbed reinforced suction anchor provided by the embodiment of the present invention.

[0066] The attached barbed reinforced suction anchor further includes a protrusion 4. The protrusion 4 is fixedly connected to the linear edge 21 via one side edge thereof. The angle β between the protrusion 21 and the plane of the connecting portion 10 of the barb mechanism 4 ranges from 10° to 20°. In this case, when the barb mechanism 4 rotates to its maximum deployment limit, the angle α between the normal of the barb mechanism 4 and the axis of the anchor body 3 ranges from 60° to 80°, and the angle β between the protrusion 4 and the plane of the barb mechanism 4 ranges from 10° to 20°. Combined with these two factors, when the barb mechanism 4 is deployed to its maximum limit relative to the anchor body 3, the plane in which the protrusion 4 lies is nearly horizontal. Therefore, when the attached barbed reinforced suction anchor provided by the embodiment of the present invention is subjected to an upward pulling force, the protrusion 4 can directly bear the vertical force, further enhancing the load-bearing capacity of the attached barbed reinforced suction anchor provided by the embodiment of the present invention.

[0067] The attached barbed reinforced suction anchor further includes a fluid inlet and outlet 2. The fluid inlet and outlet 2 is disposed on the top cover of the anchor body 3, allowing the inner cavity of the anchor body 3 to communicate with the outside world through the fluid inlet and outlet 2. In this case, the fluid inlet and outlet 2 enables the sinking of the attached barbed suction anchor provided by the embodiment of the present invention.

[0068] The barbed reinforcement suction anchor further includes a first connector 1 and a second connector 7. The first connector 1 and the second connector 7 are respectively fixed to the anchor body 3, and the barbed reinforcement suction anchor is connected to the outside world through the first connector 1 and the second connector 7. In this case, the barbed reinforcement suction anchor provided by the embodiment of the present invention can achieve external connection through the first connector 1 and the second connector 7, which is more convenient in application.

[0069] Among them, the arrangement of the barb mechanism 4 on the outer periphery of the anchor body 3 is divided into four layers, the two lower layers each contain 4 barb mechanisms 4, and each barb mechanism 4 is spaced 90° on the outer periphery of the anchor body 3 by the central angle; the two layers of barb mechanisms 4 are staggered at 45° on the outer periphery of the anchor body 3 by the central angle; the two upper layers each have 2 barb mechanisms 4, and each barb mechanism 4 is spaced 180° on the outer periphery of the anchor body 3 by the central angle; the two layers of barb mechanisms 4 are staggered at 90° on the outer periphery of the anchor body 3 by the central angle. In this case, as the depth of the attached barb-type reinforced suction anchor provided by the embodiment of the present invention entering the soil layer 26 is different, the position on which the attached barb-type reinforced suction anchor provided by the embodiment of the present invention is subjected to less gravity of the soil layer 26 than the position on which the attached barb-type reinforced suction anchor provided by the embodiment of the present invention is subjected to less gravity of the soil layer 26. Therefore, according to the layout of this barb mechanism 4, the force applied to the attached barb-type reinforced suction anchor provided by the embodiment of the present invention can be made more balanced.

[0070] During application, first, under the gravity load of the anchor body 3 of the attached barb-type reinforced suction anchor provided by the embodiment of the present invention, the attached barb-type reinforced suction anchor provided by the embodiment of the present invention will sink a certain distance. After the attached barb-type reinforced suction anchor provided by the embodiment of the present invention is stable, a vacuum pump is used to extract the water from the inner cavity of the anchor body 3 through the fluid inlet and outlet 2, forming a negative pressure at one time, and the anchor body 3 gradually sinks under this pressure. During the sinking process, the barb mechanism 4 is always tightly fitted with the anchor body 3 under the squeezing action of the soil and is in a closed state. After the attached barb-type reinforced suction anchor provided by the embodiment of the present invention is sunk and installed, the anchor body 3 will be displaced upward due to the upward pulling force and horizontal force of the anchor chain 28. Under the action of soil shear and vertical load pressure, the barb mechanism 4 gradually opens. If the anchor body 3 cannot move upward due to environmental load in this step, water can be filled into the inner cavity of the anchor body 3 through the fluid inlet and outlet 2 to force the anchor body 3 to move upward, causing the barb mechanism 4 to open.

[0071] In addition, after the barb mechanism 4 of the attached barb-type reinforced suction anchor provided by the embodiment of the present invention is opened, in the vertical direction, the soil resistance provided by the barb mechanism 4 can provide vertical bearing capacity more effectively than the friction force of the suction anchor side wall; in the horizontal direction, the soil resistance provided by the barb mechanism 4 increases the horizontal bearing capacity provided by the anchor body 3 alone; on the other hand, during the long-term movement of the anchor chain 28, a seabed groove 27 will be cut out on the seabed, which greatly reduces the vertical and horizontal bearing capacities of the attached barb-type reinforced suction anchor provided by the embodiment of the present invention, especially the horizontal bearing capacity. Under the action of the barb mechanism 4, on a plane that is not parallel to the seabed groove 27, the barb mechanism 4 can enhance the horizontal bearing capacity of the attached barb-type reinforced suction anchor provided by the embodiment of the present invention, thereby significantly increasing the bearing performance of the attached barb-type reinforced suction anchor provided by the embodiment of the present invention.

[0072] The attached barbed reinforced suction anchor provided by the embodiment of the present invention improves the vertical bearing capacity and horizontal bearing capacity of the suction anchor to varying degrees. Generally speaking, the increase in the vertical bearing capacity is greater than the increase in the horizontal bearing capacity.

[0073] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0074] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. An attached barbed reinforced suction anchor, characterized in that: It comprises an anchor body (3), a barb mechanism (4) and a hinge, The barb mechanism (4) is arranged on the outer periphery of the anchor body (3) through the hinge, so that: When the barb mechanism (4) is subjected to an upward force, the free end of the barb mechanism (4) is closed toward the anchor body (3) with the hinge as the rotation center; When the barb mechanism (4) is subjected to a downward force, the free end of the barb mechanism (4) rotates away from the anchor body (3) with the hinge as the rotation center, thereby expanding the bearing radius of the anchor body (3); The hinge comprises a connecting ear (5) and a rotating pin (6), The barb mechanism (4) comprises a barb body, The barb body comprises a first side wall (11), a second side wall (12) and a connecting portion (10); the first side wall (11) and the second side wall (12) are fixedly connected as a whole through the connecting portion (10); a semi-open accommodating space (20) is formed between the first side wall (11), the second side wall (12) and the connecting portion (10); The first side wall (11) and the second side wall (12) are respectively provided with a first through hole (18) and a second through hole (19) at corresponding positions. The connecting ear (5) is provided with a third through hole (17). When the barb mechanism (4) is connected to the anchor body (3), the connecting ear (5) is contained by the semi-open accommodating space (20), so that the first through hole (18), the second through hole (19), and the third through hole (17) correspond to each other. The rotating pin (6) passes through the first through hole (18), the second through hole (19) and the third through hole (17) at the same time; The bottom of the barb mechanism (4) forms a limiting step. When the first protruding point (8) and the second protruding point (9) of the limiting step both abut against the outer wall of the anchor body (3), the barb mechanism (4) rotates to the maximum expansion limit position.

2. The attachment barb-type reinforced suction anchor according to claim 1, characterized in that: The limiting step is a two-step step.

3. The attachment barb-type reinforced suction anchor according to claim 1, characterized in that: The first raised point (8) and the second raised point (9) of the position-limiting step are in a rounded transition.

4. The attachment barb-type reinforced suction anchor according to claim 1, characterized in that: When the barb mechanism (4) rotates to the maximum deployment limit position, the angle α between the normal line of the barb mechanism (4) and the axis of the anchor body (3) has a value range of 60°-80°.

5. The attachment barb-type reinforced suction anchor according to claim 4, characterized in that: The transition portion (13) formed between the top surface (22) of the connecting ear (5) and the bottom surface (14) of the connecting ear (5) is rounded. The angle γ between the normal of the bottom surface (14) of the connecting ear (5) and the axis of the anchor body (3) is the same as the angle α between the normal line of the barb mechanism (4) and the axis of the anchor body (3).

6. The attachment barb-type reinforced suction anchor according to claim 1, characterized in that: The free side of the first side wall (11) gradually decreases in distance from the middle position toward the free end of the first side wall (11) to the edge where the first side wall (11) is connected to the connecting portion (10), forming a first oblique side (15); The free side of the second side wall (12) gradually decreases in distance from the middle position toward the free end of the second side wall (12) to the edge where the second side wall (12) is connected to the connecting portion (10), forming a second oblique side (16); The first oblique side (15) and the second oblique side (16) are located on the same plane.

7. The attachment barb-type reinforced suction anchor according to claim 6, characterized in that: The free end of the first oblique side (15), the free end of the second oblique side (16) and the free end of the second oblique side form a linear edge (21).

8. The attachment barb-type reinforced suction anchor according to claim 1, characterized in that: Also includes convex bodies, The convex body is fixedly connected to the barb mechanism (4) via one side edge thereof, and the value range of the opening angle β between the convex body and the plane of the barb mechanism (4) is 10°-20°.

9. The attachment barb-type reinforced suction anchor according to claim 7, characterized in that: Also includes convex bodies, The convex body is fixedly connected to the linear edge (21) via one side edge thereof, and the value range of the opening angle β between the convex body (21) and the plane of the connecting portion (10) of the barb mechanism (4) is 10°-20°.

10. The attachment barb-type reinforced suction anchor according to claim 1, characterized in that: Also includes fluid inlet and outlet (2), The fluid inlet and outlet (2) are arranged on the top cover of the anchor body (3), so that the inner cavity of the anchor body (3) is connected to the outside through the fluid inlet and outlet (2).

11. The attachment barb-type reinforced suction anchor according to claim 1, characterized in that: It also includes a first connecting member (1) and a second connecting member (7), The first connecting member (1) and the second connecting member (7) are respectively fixedly arranged on the anchor body (3). The attached barbed reinforced suction anchor is connected to the outside via the first connecting piece (1) and the second connecting piece (7).

12. The attachment barb-type reinforced suction anchor according to claim 1, characterized in that: The arrangement of the barb mechanisms (4) on the outer periphery of the anchor body (3) is divided into four layers, the lower two layers each contain four barb mechanisms (4), and each barb mechanism (4) is spaced 90 degrees on the outer periphery of the anchor body (3) by a central angle; the two layers of barb mechanisms (4) are staggered 45 degrees on the outer periphery of the anchor body (3) by a central angle; the upper two layers each contain two barb mechanisms (4), and each barb mechanism (4) is spaced 180 degrees on the outer periphery of the anchor body (3) by a central angle; the two layers of barb mechanisms (4) are staggered 90 degrees on the outer periphery of the anchor body (3) by a central angle.

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