Attached barb type reinforced suction anchor

Abstract

The invention provides an attached barb type reinforced suction anchor, and belongs to the technical field of suction anchors. The reinforced suction anchor comprises an anchor body, a barb mechanism and a hinge. The barb mechanism is arranged on the periphery of the anchor body through the hinge, so that when the barb mechanism is subjected to upward acting force, the free end of the barb mechanism is folded towards the anchor body with the hinge as the rotation center. When the barb mechanism is subjected to downward acting force, the free end of the barb mechanism rotates away from the anchor body with the hinge as the rotating center, and the bearing radius of the anchor body is enlarged. When the attaching barb type reinforced suction anchor is subjected to acting force from bottom to top, the barb mechanism is in a closed state, and the downward movement of the attaching barb type reinforced suction anchor is slightly hindered; when the adhesion barb type reinforced suction anchor is located in a soil layer and is subjected to upward drawing acting force, the barb structure is expanded under the acting force from top to bottom, the bearing radius is enlarged, and therefore the bearing capacity of the suction anchor can be remarkably improved in the vertical direction and the horizontal direction.

Description

Technical Field

[0001] The 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 continuous consumption of oil and natural gas reserves in the ocean, the offshore industry is forced to develop towards deep seas and unexplored environments. Suction anchors are increasingly used as the foundation of offshore anchoring systems due to their advantages such as easy installation, strong adaptability and high economic benefits. For example, offshore floating oil and gas platforms, offshore floating wind turbine platforms and other floating structures. On the one hand, these platforms transmit cyclic loads to the suction anchor foundation under the action of marine environments such as wind, waves and currents, so that the suction anchor foundation bears cyclic vertical uplift loads and horizontal loads, and weakens the soil around the suction anchor; on the other hand, the upper structure will cause the mooring chain connected to the suction anchor to move cyclically under the marine load, and then "cut" a groove on the seabed on one side of the suction anchor mooring chain. All of the above will cause the ultimate bearing capacity of the suction anchor to decrease, threatening the stability and safety of the upper marine structure. Therefore, it is necessary to develop a device to strengthen the overall bearing capacity of the suction anchor so that the suction anchor has good pull-out and horizontal bearing capacity under these threats. Summary of the invention

[0003] In view of this, the present invention provides an attached barbed reinforced suction anchor. When the attached barbed reinforced suction anchor moves into the soil layer, the attached barbed reinforced suction anchor is subjected to a force from bottom to top, and the barb mechanism is in a closed state, which has little hindrance to the downward movement of the attached barbed reinforced suction anchor. When the attached barbed reinforced suction anchor is in the soil layer and is subjected to an upward pulling force, the barb structure is subjected to a 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, thereby being more suitable for practical use.

[0004] In order to achieve the above object, 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) performs a rotational movement 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 via 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 deployment limit position.

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

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

[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), thereby forming a first oblique edge (15);

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

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

[0029] Preferably, the free end of the first oblique edge (15), the free end of the second oblique edge (16) and the free end of the second oblique edge 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 with 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 barb mechanisms (4) are arranged on the outer circumference of the anchor body (3) in four layers, the two lower layers each containing four barb mechanisms (4), each barb mechanism (4) being spaced apart on the outer circumference of the anchor body (3) at a center angle of 90°; the two layers of barb mechanisms (4) are offset on the outer circumference of the anchor body (3) at a center angle of 45°; the two upper layers each containing two barb mechanisms (4), each barb mechanism (4) being spaced apart on the outer circumference of the anchor body (3) at a center angle of 180°; the two layers of barb mechanisms (4) are offset on the outer circumference of the anchor body (3) at a center angle of 90°.

[0040] When the attached barb-type reinforced suction anchor provided by the embodiment of the present invention is used, 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, such as Figure 8 As shown in the anchor body 23 with the barb mechanism in a 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 unfolded, as shown in FIG. Figure 8As shown in the anchor body 24 with the barb mechanism in the unfolded state, the bearing radius is enlarged, so it can significantly improve the 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 out of the seabed, which greatly reduces the vertical bearing capacity and horizontal bearing capacity of the suction anchor, especially the horizontal bearing capacity. Under the action of the attached barbed 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 bearing capacity of the attached barbed suction anchor provided by the embodiment of the present invention, thereby further significantly increasing the bearing performance of the attached barbed suction anchor provided by the embodiment of the present invention. The attached barbed reinforced suction anchor provided by the embodiment of the present invention has different degrees of improvement on the vertical bearing capacity and horizontal bearing capacity of the suction anchor. Generally speaking, the increase in vertical bearing capacity is greater than the increase in horizontal bearing capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

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

[0043] Attached 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 D is removed);

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

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

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

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

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

[0049] Attached Figure 8 A schematic diagram of the application principle of the 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 point, 9-second protrusion point, 10-connecting part, 11-first side wall, 12-second side wall, 13-transition part, 14-bottom surface of connecting ear, 15-first hypotenuse, 16-second hypotenuse, 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 expanded 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 barbed reinforced suction anchor. When the attached barbed reinforced suction anchor moves into the soil layer, the attached barbed reinforced suction anchor is subjected to a force from bottom to top, and the barb mechanism is in a closed state, which has little hindrance to the downward movement of the attached barbed reinforced suction anchor. When the attached barbed reinforced suction anchor is in the soil layer and is subjected to an upward pulling force, the barb structure is subjected to a 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, thereby being more suitable for practical use.

[0053] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following is a detailed description of the specific implementation method, structure, features and effects of an attached barbed reinforced suction anchor proposed by the present invention in combination with the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "embodiment" does not necessarily refer to the same embodiment. In addition, specific features, structures, or characteristics in one or more embodiments may be combined in any suitable form.

[0054] The term "and / or" in this article is merely a description of the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B. Specifically, it is understood that: 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 be met.

[0055] See attached Figure 1 -Attached Figure 8The attached barb-type reinforced suction anchor provided by the embodiment of the present invention 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 a 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, so that the bearing radius of the anchor body 3 is expanded.

[0056] When the attached barb-type reinforced suction anchor provided by the embodiment of the present invention is used, 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, such as Figure 8 As shown in the anchor body 23 with the barb mechanism in a 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 unfolded, as shown in FIG. Figure 8 As shown in the anchor body 24 with the barb mechanism in the unfolded state, the bearing radius is enlarged, so it can significantly improve the 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 out of the seabed, which greatly reduces the vertical bearing capacity and horizontal bearing capacity of the suction anchor, especially the horizontal bearing capacity. Under the action of the attached barb-type suction anchor provided in 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 bearing capacity of the attached barb-type suction anchor provided in the embodiment of the present invention, thereby further significantly increasing the bearing performance of the attached barb-type suction anchor provided in the embodiment of the present invention. The attached barb-type reinforced suction anchor provided in the embodiment of the present invention has different degrees of improvement on the vertical bearing capacity and horizontal bearing capacity of the suction anchor. Generally speaking, the increase in vertical bearing capacity is greater than the increase in horizontal 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 through the connecting portion 10, and 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, and 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, 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 in 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 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 deployment limit position. In this case, the maximum rotation deployment angle of the barb mechanism 4 relative to the anchor body 3 can be limited by the first protruding point 8 and the second protruding point of the limiting step, which has a simple structure and low cost.

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

[0060] Among them, the first raised point 8 and the second raised point 9 of the limiting step are in 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, and 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, unfold and expand the 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 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] Among them, when the barb mechanism 4 rotates to the maximum deployment limit position, the value range of the angle α between the normal line of the barb mechanism 4 and the axis of the anchor body 3 is 60°-80°. In this case, the barb mechanism 4 can not only provide a better bearing force in the numerical direction and horizontal direction, but also avoid the risk of the barb mechanism 4 falling off from the anchor body 3 and failing due to the large vertical force borne by the barb mechanism 4 itself after the angle α between the normal line of the barb mechanism 4 and the axis of the anchor body 3 is greater than 80°, and the application safety is higher.

[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 re-consideration life and operation reliability of the attached barb-type reinforced suction anchor provided by the embodiment of the present invention.

[0063] Among them, the free side of the first side wall 11 gradually decreases from the middle position to the free end of the first side wall 11, to the side where the first side wall 11 is connected to the connecting portion 10, forming a first hypotenuse 15. The free side of the second side wall 12 gradually decreases from the middle position to the free end of the second side wall 12, to the side where the second side wall 12 is connected to the connecting portion 10, forming a second hypotenuse 16. The first hypotenuse 15 and the second hypotenuse 16 are on the same plane. In this case, by utilizing the sharp angle structure formed by the free ends of the first hypotenuse 15 and the second hypotenuse 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, due to the smaller area of ​​the sharp angle structure, the pressure is greater 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 bevel 15 and the free end of the second bevel 16 form a linear edge 21. In this case, 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 area of ​​the existing edge is smaller, and the pressure is greater under the same force, so that the barb mechanism 4 of the attached barb-type reinforced suction anchor provided in the embodiment of the present invention is easier to rotate and unfold.

[0065] Among them, the attached barbed reinforced suction anchor also includes a convex body 4. The convex body 4 is fixedly connected to the barb mechanism 4 through its one side edge, and the value range of the angle β between the convex body 4 and the plane of the barb mechanism 4 is 10°-20°. In this case, when the barb mechanism 4 rotates to the maximum deployment limit position, the value range of the angle α between the normal line of the barb mechanism 4 and the axis of the anchor body 3 is 60°-80°, and the value range of the angle β between the convex body 4 and the plane of the barb mechanism 4 is 10°-20°. Combined with the two, when the barb mechanism 4 is deployed to the maximum limit position relative to the anchor body 3, the plane where the convex body 4 is located is almost horizontal. Therefore, when the attached barbed reinforced suction anchor provided in the embodiment of the present invention is subjected to an upward pulling force, the convex body 4 can directly bear the force in the vertical direction, so that the bearing capacity of the attached barbed reinforced suction anchor provided in the embodiment of the present invention is further enhanced.

[0066] Among them, the attached barbed reinforced suction anchor also includes a convex body 4. The convex body 4 is fixedly connected to the linear edge 21 through its one side edge, and the range of the value of the angle β between the convex body 21 and the plane of the connecting portion 10 of the barbed mechanism 4 is 10°-20°. In this case, when the barbed mechanism 4 rotates to the maximum deployment limit position, the range of the value of the angle α between the normal line of the barbed mechanism 4 and the axis of the anchor body 3 is 60°-80°, and the range of the value of the angle β between the convex body 4 and the plane of the barbed mechanism 4 is 10°-20°. Combined with the two, when the barbed mechanism 4 is deployed to the maximum limit position relative to the anchor body 3, the plane where the convex body 4 is located is almost horizontal. Therefore, when the attached barbed reinforced suction anchor provided in the embodiment of the present invention is subjected to an upward pulling force, the convex body 4 can directly bear the vertical force, so that the bearing capacity of the attached barbed reinforced suction anchor provided in the embodiment of the present invention is further enhanced.

[0067] The attached barb-type reinforced suction anchor further includes a fluid inlet and outlet 2. The fluid inlet and outlet 2 is 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. In this case, through the fluid inlet and outlet 2, the sinking of the attached barb-type suction anchor provided by the embodiment of the present invention can be achieved.

[0068] The attached barb-type reinforced suction anchor further includes a first connector 1 and a second connector 7. The first connector 1 and the second connector 7 are respectively fixedly arranged on the anchor body 3, and the attached barb-type reinforced suction anchor is connected to the outside through the first connector 1 and the second connector 7. In this case, the attached barb-type reinforced suction anchor provided by the embodiment of the present invention can be connected to the outside through the first connector 1 and the second connector 7, which is more convenient in application.

[0069] Among them, 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 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 on the outer periphery of the anchor body 3 by the central angle of 45°; the upper two layers each contain 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 of 180°; the two layers of barb mechanisms 4 are staggered on the outer periphery of the anchor body 3 by the central angle of 90°. In this case, as the depths of the attached barb reinforced suction anchor provided by the embodiment of the present invention entering the soil layer 26 are different, the gravity of the soil layer 26 is smaller at the position where the attached barb reinforced suction anchor provided by the embodiment of the present invention is close to than that at the position where the attached barb reinforced suction anchor provided by the embodiment of the present invention is close to. Therefore, according to the layout of this barb mechanism 4, the force on the attached barb reinforced suction anchor provided by the embodiment of the present invention can be more balanced.

[0070] When used, first, under the gravity load of the anchor body 3 of the attached barb-type reinforced suction anchor provided in the embodiment of the present invention, the attached barb-type reinforced suction anchor provided in the embodiment of the present invention will sink a certain distance. After the attached barb-type reinforced suction anchor provided in the embodiment of the present invention is stable, a vacuum pump is used to extract the water in the inner cavity of the anchor body 3 through the fluid inlet and outlet 2, so as to form 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 body and is in a closed state. After the installation of the attached barb-type reinforced suction anchor provided in the embodiment of the present invention is completed, the anchor body 3 will be displaced upward due to the upward pulling force and horizontal force of the anchor chain 28. Under the shear and vertical load pressure of the soil body, the barb mechanism 4 gradually opens; if the anchor body 3 cannot move upward due to the 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 4 mechanism to open.

[0071] In addition, after the barb mechanism 4 of the attached barb-type reinforced suction anchor provided in 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 of the seabed, which greatly reduces the vertical and horizontal bearing capacities of the attached barb-type reinforced suction anchor provided in 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 in the embodiment of the present invention, thereby significantly increasing the bearing performance of the attached barb-type reinforced suction anchor provided in the embodiment of the present invention.

[0072] The attached barbed reinforced suction anchor provided in 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 other 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 can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

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) performs a rotational movement away from the anchor body (3) with the hinge as the rotation center, thereby expanding the bearing radius of the anchor body (3).

2. The attachment barb-type reinforced suction anchor according to claim 1, characterized in that: 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 via 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.

3. The attachment barb-type reinforced suction anchor according to claim 2, characterized in that: 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 deployment limit position.

4. The attachment barb-type reinforced suction anchor according to claim 3, characterized in that: The limiting step is a two-step step.

5. The attachment barb-type reinforced suction anchor according to claim 3, characterized in that: The first protruding point (8) and the second protruding point (9) of the limiting step are in the form of rounded transitions.

6. The attachment barb-type reinforced suction anchor according to claim 3, 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) is in the range of 60°-80°.

7. The attachment barb-type reinforced suction anchor according to claim 6, 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).

8. The attachment barb-type reinforced suction anchor according to claim 2, 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), thereby forming a first oblique edge (15); The distance between the free side of the second side wall (12) from the middle position to the free end of the second side wall (12) and the edge where the second side wall (12) is connected to the connecting portion (10) gradually decreases, forming a second oblique edge (16); The first oblique edge (15) and the second oblique edge (16) are located on the same plane.

9. The attachment barb-type reinforced suction anchor according to claim 8, 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).

10. The attachment barb-type reinforced suction anchor according to claim 1, characterized in that: It also includes a convex body (4), 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°; Preferably, the attached barbed reinforced suction anchor further comprises a convex body (4), 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°; Preferably, the attached barbed reinforced suction anchor further comprises a 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 with the outside through the fluid inlet and outlet (2); Preferably, the attached barbed reinforced suction anchor further comprises 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 through the first connecting piece (1) and the second connecting piece (7); Preferably, the barb mechanisms (4) are arranged on the outer periphery of the anchor body (3) in four layers, the two lower layers each containing four barb mechanisms (4), each barb mechanism (4) being spaced apart on the outer periphery of the anchor body (3) at a center angle of 90°; the two layers of barb mechanisms (4) are offset on the outer periphery of the anchor body (3) at a center angle of 45°; the two upper layers each containing two barb mechanisms (4), each barb mechanism (4) being spaced apart on the outer periphery of the anchor body (3) at a center angle of 180°; the two layers of barb mechanisms (4) are offset on the outer periphery of the anchor body (3) at a center angle of 90°.

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