A gravity anchor

Abstract

The present application relates to the technical fields of marine equipment, and discloses a gravity anchor, which comprises an anchor body, a mounting cavity on the anchor body, an opening on the side wall of the anchor body, the opening being communicated with the mounting cavity, a lifting ring assembly arranged on the anchor body, an anchor plate assembly arranged on the bottom surface of the anchor body and extending downward, and a hook arm assembly accommodated in the mounting cavity, the hook arm assembly comprising a driving part and a hook arm, the power output end of the driving part being connected with the hook arm, the hook arm extending out of the opening, and the driving part being used for driving the hook arm to rotate to hook the seabed. The gravity anchor provided by the present application can not only be anchored by the weight of the anchor body itself, but also can increase the anti-translational capacity of the anchor body by embedding the anchor plate into the seabed and hooking the seabed by the hook arm assembly, so that the anchoring is safe and stable.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of marine equipment, in particular to a gravity anchor. BACKGROUND

[0002] The anchoring system is essential for water surface facilities and floating platforms, and the economic efficiency, stability and safety and reliability should be considered when selecting a suitable anchoring system. In the culture mooring system, the main anchor block structure used at present is the gravity anchor block.

[0003] The gravity anchor block relies on its own gravity and the friction coefficient of the seabed soil to generate the holding force, but the disadvantage is that the holding force is only 0.25-0.4 times the weight of the anchor block, and it has a strong dependence on the weight and the friction coefficient of the soil. Therefore, the gravity anchor is easily affected by the submarine current or the pulling of the floating platform to appear the translation phenomenon, the anchoring is unstable, and the safety of the water surface facility is easily caused. SUMMARY

[0004] The purpose of the present application is to provide a gravity anchor which can not only rely on the weight of the anchor body for anchoring, but also increase the anti-translation ability of the anchor body by embedding the anchor plate into the seabed and hooking the seabed with the hook arm assembly, so as to be safe and stable.

[0005] In order to achieve the above purpose, the present application provides a gravity anchor, comprising:

[0006] an anchor body, the anchor body has a mounting cavity, and an opening is arranged on the side wall of the anchor body and communicates with the mounting cavity;

[0007] a lifting ring assembly arranged on the anchor body;

[0008] an anchor plate assembly arranged on the bottom surface of the anchor body and extending downward;

[0009] a hook arm assembly accommodated in the mounting cavity, the hook arm assembly comprises a driving part and a hook arm, the power output end of the driving part is connected with the hook arm, the hook arm extends out of the opening, and the driving part is used for driving the hook arm to rotate to hook the mud bed of the seabed.

[0010] Further, the hook arm comprises a hooking part, the hooking part is arc-shaped, and the hooking part has a first arc surface and a second arc surface when viewed laterally along the hook arm assembly, the first arc surface is located outside the second arc surface, and the first arc surface and the second arc surface are smoothly connected at the end of the hooking part.

[0011] Further, the anchor body comprises a first body in the shape of an octagonal prism, one side wall in a first direction of the first body is provided with an opening, and two side walls in a second direction of the first body are respectively provided with an opening, the first body is provided with three installation cavities, and the three openings and the three installation cavities are in one-to-one correspondence and in communication.

[0012] The first direction and the second direction are perpendicular to each other.

[0013] Further, the anchor plate assembly comprises a first plate body, a second plate body, a third plate body and a fourth plate body, the first body has a first edge, a second edge and a third edge, the first edge and the second edge are opposite edges of the first body in the first direction, the third edge is an adjacent edge of the first edge, one end of the fourth plate body is arranged at the midpoint of the first edge, the other end of the fourth plate body is arranged at the top point of the second edge, one end of the third plate body is arranged at the top point of the third edge away from the first edge, the other end of the third plate body is connected to the other end of the fourth plate body, the first plate body and the third plate body are parallel to each other, the second plate body and the fourth plate body are parallel to each other, one end of the first plate body is connected to one end of the second plate body, the first plate body and the second plate body are arranged between the third plate body and the fourth plate body, and the first plate body, the second plate body, the third plate body, the fourth plate body and the bottom surface of the first body enclose to form a seabed embedding groove, and one of the installation cavities is arranged on the side wall of the second edge of the first body.

[0014] Further, the gravity anchor further comprises two anchor plate assemblies, the two anchor plate assemblies are symmetrically arranged with the line connecting the midpoint of the first edge and the midpoint of the second edge as the axis of symmetry, a containing cavity is arranged between the two fourth plate bodies, a plurality of embedding parts are arranged in the containing cavity, the embedding parts are uniformly and spacedly arranged on the fourth plate body, an embedding rod is arranged on the power output end of the embedding part, and the embedding rod can pass through the fourth plate body and be slidingly arranged in the seabed embedding groove.

[0015] Further, the lifting ring assembly comprises a first lifting ring and a second lifting ring, the first lifting ring and the second lifting ring are both U-shaped lifting rings, the two ends of the first lifting ring and the second lifting ring are connected to the first body, and the first lifting ring and the second lifting ring are cross-shaped when viewed in a third direction.

[0016] The first direction, the second direction and the third direction are perpendicular to each other.

[0017] Further, the anchor body further comprises a second main body arranged on the top surface of the first main body, the first and second hanger rings are connected to the first main body through the second main body, and the second main body is an octagonal truncated cone, and the inclined surface of the second main body has an inclination angle of 30-45 degrees.

[0018] Further, the anchor body comprises a reinforcing cage arranged inside the first and second main bodies along the third direction, and the reinforcing cage is arranged around the hanger ring assembly.

[0019] Compared with the prior art, the gravity anchor has the beneficial effects that the anchor body is sunk into the seabed by self-weight, the anchor plate assembly is inserted into the seabed along the third direction, then the driving part of the hook arm assembly drives the hook arm to hook the seabed, the anchor plate assembly preliminarily endows the anchor body with the ability to resist horizontal movement, the hook arm is inserted into the seabed, and the hook arm assembly further endows the anchor body with the ability to resist horizontal movement, and the anchoring is safe and stable. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a sectional view of the gravity anchor of the embodiment of the present application;

[0021] Figure 2 is a bottom view of the gravity anchor of the embodiment of the present application.

[0022] In the figure, 1 is an anchor body; 101 is a first main body; 1011 is a first side; 1012 is a second side; 1013 is a third side; 102 is a second main body; 103 is a mounting cavity; and 104 is an opening.

[0023] 2 is a hanger ring assembly; 201 is a first hanger ring; and 202 is a second hanger ring.

[0024] 3 is an anchor plate assembly; 301 is a first plate body; 302 is a second plate body; 303 is a third plate body; 304 is a fourth plate body; 305 is a seabed embedding groove; 306 is a cavity; 307 is an embedding part; and 308 is an embedding rod.

[0025] 4 is a hook arm assembly; 401 is a driving part; 402 is a hook arm; 4021 is a hooking part; 40211 is a first arc surface; 40212 is a second arc surface; and 403 is a mounting block.

[0026] X is a first direction; Y is a second direction; and Z is a third direction. DETAILED DESCRIPTION

[0027] The specific embodiments of the present application are described in detail below in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0028] In the description of the present application, the terms "upper", "lower", "left", "right", "front", "back", "inner", "outer", "transverse", "longitudinal" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, and are not used to limit the indicated devices, elements or components must have a specific orientation, or be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. For those of ordinary skill in the art, the specific meanings of these terms in the present application can be understood according to the specific circumstances.

[0029] In the description of the present application, the terms "provided with", "provided", "connected", "placed" should be broadly understood, for example, it can be fixedly connected, detachably connected, or integrally constructed; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be internal communication between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0030] In addition, the terms "first", "second" and the like are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise stated, the meaning of "multiple" is two or more.

[0031] The technical solutions of the present application will be further described below in conjunction with the embodiments and the drawings.

[0032] As shown in Figure 1 , a gravity anchor of an embodiment of the present application comprises:

[0033] an anchor body 1, the anchor body 1 has a mounting cavity 103, and an opening 104 is provided on the side wall of the anchor body 1, the opening 104 being in communication with the mounting cavity 103;

[0034] a lifting ring assembly 2, the lifting ring assembly 2 being arranged on the anchor body 1;

[0035] an anchor plate assembly 3, the anchor plate assembly 3 being arranged on the bottom surface of the anchor body 1 and extending downward;

[0036] a hook arm assembly 4, the hook arm assembly 4 being accommodated in the mounting cavity 103, the hook arm assembly 4 comprising a driving part 401 and a hook arm 402, the power output end of the driving part 401 being connected with the hook arm 402, the hook arm 402 extending out of the opening 104, the driving part 401 being used to drive the hook arm 402 to rotate to hook the mud bed on the seabed.

[0037] Based on the above technical solution, the anchor body 1 sinks to the seabed by its own weight, the anchor plate assembly 3 is inserted into the seabed along the third direction Z, and then the driving part 401 of the hook arm assembly 4 drives the hook arm 402 to hook the seabed. The anchor plate assembly 3 initially gives the anchor body 1 the ability to resist horizontal movement. The hook arm 402 is inserted into the seabed, and the hook arm assembly 4 further gives the anchor body 1 the ability to resist horizontal movement, so that the anchoring is safe and stable.

[0038] Specifically, the hook arm assembly 4 also includes a mounting block 403, one end of the hook arm 402 is rotatably connected to the mounting block 403, the drive unit 401 is preferably an electric cylinder, one end of the drive unit 401 is hinged to the mounting block 403, the power output end of the drive unit 401 is hinged to the hook arm 402, and the mounting block 403 is installed in the mounting cavity 103.

[0039] Preferably, the hook arm 402 includes a hook portion 4021, which is arc-shaped. When viewed from the side along the hook arm assembly 4, the hook portion 4021 has a first arc surface 40211 and a second arc surface 40212. The first arc surface 40211 is located outside the second arc surface 40212, and the first arc surface 40211 and the second arc surface 40212 are smoothly connected at the end of the hook portion 4021.

[0040] The end of the hook part 4021 is smoothly connected to the first arc surface 40211 and the second arc surface 40212, which can ensure that the hook part 4021 can be inserted into the seabed more easily and can ensure the integrity of the seabed, avoiding the situation of damaging the seabed and causing the hook arm 402 to fail.

[0041] Preferably, such as Figure 2 As shown, the anchor body 1 includes a first body 101, which is an octagonal prism. An opening 104 is provided on one side wall in the first direction X and on both side walls in the second direction Y of the first body 101. The first body 101 has three mounting cavities 103, and the three openings 104 are connected to the three mounting cavities 103 in a one-to-one correspondence. A hook arm assembly 4 is installed in each mounting cavity 103.

[0042] In this context, the first direction X and the second direction Y are perpendicular to each other.

[0043] A hook arm assembly 4 is provided on one of the side walls in the first direction X of the first main body 101, and hook arm assemblies 4 are provided on both side walls in the second direction Y of the first main body 101. The three hook arm assemblies 4 can hook and compact the seabed in multiple directions, which can ensure the ability to resist horizontal movement in all directions and anchor stably.

[0044] More preferably, the anchor plate assembly 3 comprises a first plate body 301, a second plate body 302, a third plate body 303 and a fourth plate body 304, the first body 101 has a first edge 1011, a second edge 1012 and a third edge 1013, the first edge 1011 and the second edge 1012 are opposite edges of the first body 101 in the first direction X, the third edge 1013 is an adjacent edge of the first edge 1011, one end of the fourth plate body 304 is arranged at the midpoint of the first edge 1011, the other end of the fourth plate body 304 is arranged at the vertex of the second edge 1012, one end of the third plate body 303 is arranged at the vertex of the third edge 1013 away from the first edge 1011, the other end of the third plate body 303 is connected to the other end of the fourth plate body 304, the first plate body 301 and the third plate body 303 are parallel to each other, the second plate body 302 and the fourth plate body 304 are parallel to each other, one end of the first plate body 301 is connected to one end of the second plate body 302, the first plate body 301 and the second plate body 302 are arranged between the third plate body 303 and the fourth plate body 304, the first plate body 301, the second plate body 302, the third plate body 303, the fourth plate body 304 and the bottom surface of the first body 101 enclose to form a seabed embedding groove 305, and one installation cavity 103 is arranged on the side wall of the first body 101 at the second edge 1012.

[0045] The specific use of the gravity anchor: when the gravity anchor is lowered to the seabed, the first edge 1011 of the anchor body 1 is first contacted with the seabed, the soil of the seabed enters the seabed embedding groove 305 from the seabed embedding groove 305 of the first edge 1011 and the third edge 1013, and the soil between the seabed embedding groove 305 and the first plate body 301 and the second plate body 302 is ensured to be compact, at this time, the seabed is tamped by the hook arms 402 of the three hook arm assemblies 4.

[0046] More preferably, the gravity anchor further comprises two anchor plate assemblies 3, the two anchor plate assemblies 3 are symmetrically arranged with the line connecting the midpoint of the first edge 1011 and the midpoint of the second edge 1012 as the axis of symmetry, a containing cavity 306 is arranged between the two fourth plate bodies 304, a plurality of embedding parts 307 are arranged in the containing cavity 306, the embedding parts 307 are uniformly and spacedly arranged on the fourth plate body 304, an embedding rod 308 is arranged on the power output end of the embedding part 307, and the embedding rod 308 can pass through the fourth plate body 304 and be slidingly arranged in the seabed embedding groove 305.

[0047] Specifically, the embedding part 307 is preferably an electric cylinder.

[0048] Specifically, when the seabed slot 305 is not stably embedded in the seabed soil, the embedding rod 308 does not pass through the fourth plate body 304 and is inserted into the seabed slot 305, and after the seabed soil enters the seabed slot 305, the embedding part 307 drives the embedding rod 308 to pass through the fourth plate body 304 and extend into the seabed slot 305 and be inserted into the seabed soil, thereby increasing the connection strength between the seabed and the gravity anchor, ensuring anchoring stability, and comprehensively reducing the possibility of gravity anchor sliding and improving the ability of the gravity anchor to resist horizontal movement, thereby ensuring anchoring stability.

[0049] More preferably, the lifting ring assembly 2 comprises a first lifting ring 201 and a second lifting ring 202, both of which are U-shaped lifting rings, and both ends of the first lifting ring 201 and the second lifting ring 202 are connected to the first main body 101, and when viewed along the third direction Z, the first lifting ring 201 and the second lifting ring 202 are arranged in a cross shape.

[0050] Among them, the first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0051] Specifically, the first lifting ring 201 is arranged above the second lifting ring 202, and the top of the second lifting ring 202 is connected to the concave part of the U-shaped first lifting ring 201.

[0052] When the hook of the crane hoists the gravity anchor, two hooks can be used to hook the second lifting ring 202, and the two lifting rings are spaced apart by the first lifting ring 201, which serves as a rotational limiting effect for the hook of the crane, so that relative rotation does not occur between the hook of the crane and the gravity anchor. Because the gravity anchor is very heavy, safety problems are prone to occur, and the use of two hooks to hoist the gravity anchor can evenly distribute the stress on the hooks, making hoisting more stable and safe.

[0053] More preferably, the anchor body 1 further comprises a second main body 102, which is arranged on the top surface of the first main body 101, and the ends of the first lifting ring 201 and the second lifting ring 202 pass through the second main body 102 and are connected to the first main body 101. The second main body 102 is an octagonal table, and the inclination angle of the inclined surface of the second main body 102 is 30°-45°. The inclination angle of the second main body 102 is preferably 40°. When the inclination angle of the second main body 102 is less than 30°, the thickness of the second main body 102 is insufficient, and when the crane hoists the gravity anchor, the connection performance of the lifting ring assembly 2 and the anchor body 1 is weak, which can easily cause the anchor body 1 to be damaged and the lifting ring assembly 2 to be detached, which can easily cause safety accidents. When the inclination angle of the second main body 102 is greater than 45°, the longitudinal cross-sectional area of the anchor body 1 is large, which is easily affected by the submarine undercurrent, causing the gravity anchor to tilt and deviate, which is not conducive to anchoring.

[0054] More preferably, the anchor body 1 comprises a reinforcement cage arranged inside the first body 101 and the second body 102 along the third direction Z, and the reinforcement cage is arranged around the outer periphery of the hanger assembly 2, so as to ensure the structural strength of the anchor body 1.

[0055] In summary, the embodiment of the present application provides a gravity anchor, the anchor body 1 of which is sunk into the seabed by self-weight, the anchor plate assembly 3 is inserted into the seabed along the third direction Z, then the driving part 401 of the hook arm assembly 4 drives the hook arm 402 to hook the seabed, the anchor plate assembly 3 preliminarily endows the anchor body 1 with the ability to resist horizontal movement, the hook arm 402 is inserted into the seabed, and the hook arm assembly 4 further endows the anchor body 1 with the ability to resist horizontal movement, so that the anchor is safe and stable.

[0056] The above only describes the preferred embodiments of the present application, and it should be noted that those skilled in the art can make several improvements and replacements without departing from the technical principles of the present application, and these improvements and replacements should also be considered as the protection scope of the present application.

Claims

1. A gravity anchor, characterized in that, include: An anchor body (1) has an installation cavity (103) and an opening (104) on the side wall of the anchor body (1), the opening (104) being connected to the installation cavity (103); A lifting ring assembly (2) is disposed on the anchor body (1); Anchor plate assembly (3), the anchor plate assembly (3) is disposed on the bottom surface of the anchor body (1) and extends downward; Hook arm assembly (4), the hook arm assembly (4) is housed in the mounting cavity (103), the hook arm assembly (4) includes a drive unit (401) and a hook arm (402), the power output end of the drive unit (401) is connected to the hook arm (402), the hook arm (402) extends out of the opening (104), the drive unit (401) is used to drive the hook arm (402) to rotate so as to hook the seabed; The anchor body (1) includes a first body (101), which is an octagonal prism; The anchor plate assembly (3) includes a first plate (301), a second plate (302), a third plate (303), and a fourth plate (304). Viewed from the bottom surface of the first body (101), the first body (101) has a first side (1011), a second side (1012), and a third side (1013). The first side (1011) and the second side (1012) are two opposing edges of the first body (101) in a first direction (X). The third side (1013) is an adjacent edge of the first side (1011). One end of the fourth plate (304) is located at the midpoint of the first side (1011), and the other end of the fourth plate (304) is located at the vertex of the second side (1012). One end of the third plate (303) is located at the midpoint of the first side (1011). The three sides (1013) are away from the vertex of the first side (1011). The other end of the third plate (303) is connected to the other end of the fourth plate (304). The first plate (301) and the third plate (303) are parallel to each other. The second plate (302) and the fourth plate (304) are parallel to each other. One end of the first plate (301) is connected to one end of the second plate (302). The first plate (301) and the second plate (302) are both disposed between the third plate (303) and the fourth plate (304). The bottom surface of the first plate (301), the second plate (302), the third plate (303), the fourth plate (304) and the first main body (101) enclose and define the seabed groove (305). It also includes two anchor plate assemblies (3), which are symmetrically arranged with the line connecting the midpoint of the first side (1011) and the midpoint of the second side (1012) as the axis of symmetry. A cavity (306) is provided between the two fourth plates (304), and a plurality of embedded parts (307) are provided in the cavity (306). The embedded parts (307) are evenly spaced on the fourth plates (304). An embedded rod (308) is provided on the power output end of the embedded part (307). The embedded rod (308) can pass through the fourth plate (304) and slide into the seabed groove (305).

2. The gravity anchor according to claim 1, characterized in that, The hook arm (402) includes a hook connection (4021), which is arc-shaped. When viewed from the side of the hook arm assembly (4), the hook connection (4021) has a first arc surface (40211) and a second arc surface (40212). The first arc surface (40211) is located outside the second arc surface (40212), and the first arc surface (40211) and the second arc surface (40212) are smoothly connected at the end of the hook connection (4021).

3. The gravity anchor according to claim 1, characterized in that, The first body (101) has openings (104) on one side wall in the first direction (X) and on both side walls in the second direction (Y). The first body (101) has three mounting cavities (103). The three openings (104) are connected to the three mounting cavities (103) in a one-to-one correspondence. The hook arm assembly (4) is installed in each mounting cavity (103). Wherein, the first direction (X) and the second direction (Y) are perpendicular to each other.

4. The gravity anchor according to claim 3, characterized in that, One of the mounting cavities (103) is located on the side wall where the second side (1012) of the first body (101) is located.

5. The gravity anchor according to claim 3, characterized in that, The lifting ring assembly (2) includes a first lifting ring (201) and a second lifting ring (202). Both the first lifting ring (201) and the second lifting ring (202) are U-shaped lifting rings. Both ends of the first lifting ring (201) and the second lifting ring (202) are connected to the first main body (101). When viewed along the third direction (Z), the first lifting ring (201) and the second lifting ring (202) are arranged in a cross shape. Among them, the first direction (X), the second direction (Y), and the third direction (Z) are perpendicular to each other.

6. The gravity anchor according to claim 5, characterized in that, The anchor body (1) also includes a second body (102), which is disposed on the top surface of the first body (101). The ends of the first lifting ring (201) and the second lifting ring (202) pass through the second body (102) and are connected to the first body (101). The second body (102) is an octagonal frustum, and the inclination angle of the inclined surface of the second body (102) is 30°-45°.

7. The gravity anchor according to claim 6, characterized in that, The anchor body (1) includes a steel cage, which extends along the third direction (Z) and is disposed inside the first body (101) and the second body (102), and the steel cage surrounds the outer periphery of the lifting ring assembly (2).

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