Mooring chain, anti-torsion device thereof and assembling method for mooring chain

Abstract

The invention relates to a mooring chain, an anti-torsion device of the mooring chain and an assembling method for the mooring chain, the anti-torsion device comprises two chain link connecting structures, the two chain link connecting structures are used for being connected with two adjacent chain links of the mooring chain respectively, and the two chain link connecting structures can be connected with each other and can rotate relative to each other. For the mooring chain with the torsion prevention device, in the using process of the mooring chain, the two chain link connecting structures can rotate relatively, so that the two chain links connected with the two chain link connecting structures can rotate relatively, torsion of the mooring chain can be untwisted, torsion of the mooring chain is avoided, and the service life of the mooring chain is prolonged. Stress concentration of the mooring chain is reduced, the service life of the mooring chain is prolonged, and safe operation of the floating type offshore wind power foundation platform is guaranteed.

Description

Technical Field

[0001] The present disclosure relates to the technical field of mooring chains, and in particular, to a mooring chain and an anti-twist device thereof, and an assembly method for the mooring chain. Background Art

[0002] Floating wind power technology is an important direction for the development of offshore wind power and has huge potential.

[0003] In the related art, the floating offshore wind power foundation platform used to install wind turbines is usually fixed by multiple mooring chains. However, due to the influence of factors such as the length of the mooring chain and the wind and waves at sea, the mooring chain is prone to twisting, which leads to increased stress in the mooring chain and reduced fatigue life, thereby affecting the safe operation of the entire floating offshore wind power foundation platform. Summary of the invention

[0004] The purpose of the present disclosure is to provide a mooring chain and an anti-twist device thereof, and an assembly method for the mooring chain, so as to solve the technical problems existing in the related art.

[0005] In order to achieve the above-mentioned object, according to a first aspect of the present disclosure, there is provided an anti-twist device for a mooring chain, comprising two chain link connection structures, wherein the two chain link connection structures are respectively used to connect to two adjacent chain links of the mooring chain; Wherein, the two chain link connection structures can be connected to each other and can rotate relative to each other.

[0006] Optionally, the anti-twist device further comprises an intermediate connecting structure, wherein the intermediate connecting structure is located between the two chain link connecting structures, and the two chain link connecting structures are both axially locked and circumferentially rotatably connected to the intermediate connecting structure.

[0007] Optionally, the intermediate connection structure comprises a rod body and two connection plates respectively located at two ends of the rod body, the connection plates protrude from the rod body in a radial direction of the rod body, the two chain link connection structures are both provided with connection grooves, and the two connection plates are respectively rotatably located in the connection grooves of the two chain link connection structures; A limiting portion is formed at the notch of each connecting groove, one end of each connecting plate abuts against the bottom wall of the corresponding connecting groove, and the other end of each connecting plate abuts against the corresponding limiting portion, and the limiting portions on the two chain link connection structures are clamped between the two connecting plates.

[0008] Optionally, each of the chain link connection structures comprises a first half body and a second half body, and the first half body and the second half body are connected in abutment with each other; The first half body and the second half body are both provided with arc-shaped grooves, and arc-shaped flanges are formed at the groove openings of the arc-shaped grooves. The arc-shaped grooves on the first half body and the arc-shaped grooves on the second half body are joined together to form the connecting groove, and the arc-shaped flanges on the first half body and the arc-shaped flanges on the second half body are joined together to form the limiting portion.

[0009] Optionally, a plurality of connecting lugs are formed on the first half body and the second half body, each of the connecting lugs is formed with a first connecting hole, and a first fastener can pass through the first connecting hole of the connecting lug on the first half body and the first connecting hole of the connecting lug on the second half body to connect the first half body and the second half body.

[0010] Optionally, each of the chain link connection structures comprises a rotating connection portion, a chain link connection portion and an arc-shaped reinforcing plate, the rotating connection portion is formed in a ring shape, the connection groove and the limiting portion are both formed on the rotating connection portion, and the chain link connection portion is used to connect with the chain link; A plurality of arc-shaped reinforcing plates are arranged on each of the chain link connecting parts, and the outer surface of each of the arc-shaped reinforcing plates is flush with the outer surface of the rotating connecting part.

[0011] Optionally, a second connection hole is formed on both of the two chain link connection structures, and a second fastener can pass through the second connection hole and a third connection hole on a D-shaped shackle connected to the chain link to connect the chain link connection structure with the chain link.

[0012] According to a second aspect of the present disclosure, a mooring chain is provided, comprising a plurality of chain links and an anti-twist device as described above, wherein the anti-twist device is arranged between at least two adjacent chain links among the plurality of chain links, and the two chain link connecting structures of the anti-twist device are respectively connected to two adjacent chain links.

[0013] Optionally, the mooring chain further comprises a D-shaped shackle and a second fastener, two adjacent chain links are connected with the D-shaped shackle, and the D-shaped shackle has two third connecting holes; A second connection hole is formed on each of the two chain link connection structures. The second connection hole is located between the two third connection holes. The second fastener can pass through the second connection hole and the third connection hole.

[0014] According to a third aspect of the present disclosure, there is provided a method for assembling the above-mentioned mooring chain, comprising: Connecting the two chain link connection structures of the anti-twist device to each other and allowing the two chain link connection structures to rotate relative to each other; The D-shaped shackles are respectively provided on two adjacent chain links; Insert one end of the two chain link connection structures into the corresponding D-shaped shackles, so that the second connection hole on the chain link connection structure is located between the two third connection holes on the D-shaped shackle, and the second connection hole is coaxial with the third connection hole; The second fastener is passed through the second connecting hole and the two third connecting holes to connect the anti-twist device to the D-shaped shackles on two adjacent chain links.

[0015] Through the above technical solution, since the two chain link connecting structures in the anti-twist device are interconnected and can rotate with each other, for a mooring chain using the anti-twist device, when the mooring chain is twisted due to factors such as its length, sea waves, etc., the two chain link connecting structures can allow relative rotation between the two chain links connected to the two chain link connecting structures, thereby achieving untwisting of the mooring chain, avoiding twisting of the mooring chain, and further reducing stress concentration of the mooring chain, improving the fatigue life of the mooring chain, and facilitating the safe operation of the floating offshore wind power foundation platform.

[0016] In other words, the anti-twist device can realize automatic untwisting of the mooring chain. When the mooring chain is twisted, there is no need for the operator to manually pull out the mooring chain. The anti-twist device can automatically untwist the mooring chain. On the one hand, it can save the manpower and time costs required for manually untwisting the mooring chain; on the other hand, it can also avoid the impact of sea waves on operations, reduce risks and improve the safety of operators.

[0017] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings: Figure 1 It is a schematic diagram of the three-dimensional structure of an anti-twist device provided in an exemplary embodiment of the present disclosure.

[0019] Figure 2 Schematic diagram of the three-dimensional structure explosion of an anti-twist device provided by an exemplary embodiment of the present disclosure Figure 3 It is a schematic diagram of the three-dimensional structure of a mooring chain provided in an exemplary embodiment of the present disclosure.

[0020] Figure 4 is a flow chart of a method for assembling a mooring chain provided by an exemplary embodiment of the present disclosure.

[0021] Figure 54 is a flow chart of a method for connecting two link connection structures of an anti-twist device to each other provided by an exemplary embodiment of the present disclosure.

[0022] Description of Reference Numerals 100-mooring chain; 10-anti-twist device; 1-chain link connection structure; 11-connecting groove; 12-limiting part; 13-first half body; 14-second half body; 15-arc groove; 16-arc flange; 17-connecting lug; 18-first connecting hole; 19-rotating connecting part; 20-chain link connection part; 21-arc reinforcing plate; 22-second connecting hole; 2-intermediate connecting structure; 23-rod body; 24-connecting plate; 3-first fastener; 30-chain link; 40-second fastener; 50-D-shaped shackle. DETAILED DESCRIPTION

[0023] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0024] In the present disclosure, it is necessary to understand that the directional words used, such as "upper" and "lower", etc., are defined by the drawing directions of the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, and a specific orientation structure and operation, and therefore cannot be understood as a limitation of the present disclosure. For example, the up and down directions may be the up and down directions of the exhaust steam heat recovery device. The terms "inside and outside" refer to the inside and outside of the corresponding structural contours. In addition, it should be noted that the terms used, such as "first", "second", etc., are used to distinguish one element from another, and do not have order and importance. In addition, in the description of the reference drawings, the same marks in different drawings represent the same elements.

[0025] In the description of the present disclosure, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "connected", and "installed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0026] like Figures 1 to 3 As shown, according to the first aspect of the present disclosure, an anti-twist device 10 of a mooring chain 100 is provided, comprising two link connection structures 1, the two link connection structures 1 being respectively used to connect to two adjacent links 30 of the mooring chain 100, wherein the two link connection structures 1 can be connected to each other and can rotate relative to each other.

[0027] When the above-mentioned anti-twist device 10 is applied to the mooring chain 100 of a floating offshore wind power foundation platform, the two link connection structures 1 in the anti-twist device 10 can be respectively connected to at least one pair of adjacent two links 30 in the mooring chain 100, and the anti-twist device 10 can connect two adjacent links 30 and allow the two adjacent links 30 to rotate relative to each other.

[0028] Through the above technical solution, since the two link connection structures 1 in the anti-twist device 10 are interconnected and can rotate with each other, for the mooring chain 100 using the anti-twist device 10, when the mooring chain 100 is twisted due to factors such as its length, sea waves, etc., the two link connection structures 1 can allow relative rotation between the two links 30 connected to the two link connection structures 1, thereby achieving the untwisting of the mooring chain 100 and avoiding the twisting of the mooring chain 100, thereby reducing the stress concentration of the mooring chain 100, improving the fatigue life of the mooring chain 100, and facilitating the safe operation of the floating offshore wind power foundation platform.

[0029] In other words, the anti-twist device 10 can realize the automatic untwisting of the mooring chain 100. When the mooring chain 100 is twisted, the anti-twist device can automatically untwist the mooring chain 100 without the need for the operator to manually pull out the mooring chain 100. On the one hand, it can save the manpower and time costs required for manually untwisting the mooring chain 100; on the other hand, it can also avoid the influence of sea waves on operations, reduce risks, and improve the safety of operators.

[0030] It should be noted that the present disclosure does not limit the specific connection method of the chain link connection structure 1, as long as the two chain link connection structures 1 can rotate relative to each other. As an embodiment of the present disclosure, the anti-twist device 10 may also include an intermediate connection structure 2, which is located between the two chain link connection structures 1, and the two chain link connection structures 1 are axially locked and circumferentially rotatably connected to the intermediate connection structure 2.

[0031] Since the intermediate connection structure 2 is located between the two chain link connection structures 1, and the two chain link connection structures 1 are both circumferentially rotatably connected to the intermediate connection structure 2, that is, the two chain link connection structures 1 cannot move relative to each other, but can rotate relative to each other. Since the two chain link connection structures 1 are both axially locked to the intermediate connection structure 2, there is no relative movement between the two chain link connection structures 1, and the connection between the two chain link connection structures 1 is more reliable and not easy to disengage, so that the anti-twist device 10 can withstand the stress from the seabed anchor point and the floating offshore wind power foundation platform, thereby achieving the relative fixation of the floating offshore wind power foundation platform in the ocean, and the stability and safety are higher. In other words, in the above embodiment, the connection between the two chain link connection structures 1 is reliable, and the two chain link connection structures 1 can rotate relative to each other.

[0032] As another embodiment of the present disclosure, one of the two link connection structures 1 of the anti-twist device 10 may be provided with an annular boss, and the other of the two link connection structures 1 may be provided with an annular groove, and the annular boss can be inserted into the annular groove. In this way, the two link connection structures 1 can be axially locked and circumferentially rotatably connected.

[0033] Alternatively, if Figure 2 As shown, the above-mentioned intermediate connection structure 2 may include a rod body 23 and two connection plates 24 respectively located at both ends of the rod body 23, the connection plates 24 protrude from the rod body 23 along the radial direction of the rod body 23, and the two chain link connection structures 1 are provided with connection grooves 11, and the two connection plates 24 are respectively rotatably located in the connection grooves 11 of the two chain link connection structures 1, and a limiting portion 12 is formed at the notch of each connection groove 11, one end of each connection plate 24 abuts against the bottom wall of the corresponding connection groove 11, and the other end of each connection plate 24 abuts against the corresponding limiting portion 12, and the limiting portions 12 on the two chain link connection structures 1 are clamped between the two connection plates 24.

[0034] Since the two connecting plates 24 at both ends of the middle connecting structure 2 are both rotatably located in the connecting grooves 11 of the two link connecting structures 1, the two connecting plates 24 can rotate in the connecting grooves 11 in the link connecting structures 1. In this way, the two link connecting structures 1 that can both rotate relative to the connecting plates 24 can also rotate relative to each other, thereby achieving the torsion untwisting of the mooring chain 100.

[0035] In addition, since a limiting portion 12 is formed at the notch of each connecting groove 11, and one end of the connecting plate 24 abuts against the bottom wall of the corresponding connecting groove 11, and the other end abuts against the corresponding limiting portion 12, when the connecting plate 24 is installed in the connecting groove 11, the limiting portion 12 and the bottom wall of the connecting groove 11 can jointly clamp the connecting plate 24, and the limiting portion 12 and the connecting groove 11 can jointly limit the connecting plate 24. On the one hand, the connecting plate 24 will not fall out of the connecting groove 11, and the connection between the chain link connection structure 1 and the intermediate connection structure 2 is more reliable; on the other hand, the intermediate connection structure 2 and the chain link connection structure 1 are not easy to move, which is beneficial to improving the fixing effect of the floating offshore wind power foundation platform at sea.

[0036] Here, it should be noted that the limiting portions 12 on the above-mentioned two link connection structures 1 are clamped between the two connecting plates 24, which means that when the two link connection structures 1 are connected to the intermediate connection structure 2, the two connecting plates 24 in the intermediate connection structure 2 are respectively located at the two ends of the limiting portions 12 of the two link connection structures 1. By reasonably designing the length of the rod body 23 of the intermediate connection structure 2, the two connecting plates 24 can be clamped together on the two limiting portions 12 of the two link connection structures 1. In this way, there will be no axial movement between the two link connection structures 1, which is beneficial to improving the fixing effect of the floating offshore wind power foundation platform at sea.

[0037] Alternatively, if Figure 1 and Figure 2 As shown, each link connection structure 1 includes a first half body 13 and a second half body 14, the first half body 13 and the second half body 14 are connected to each other, and an arc groove 15 is formed on the first half body 13 and the second half body 14, and an arc flange 16 is formed at the notch of the arc groove 15. The arc groove 15 on the first half body 13 and the arc groove 15 on the second half body 14 are assembled together to form a connecting groove 11, and the arc flange 16 on the first half body 13 and the arc flange 16 on the second half body 14 are assembled together to form a limiting portion 12.

[0038] Since each chain link connection structure 1 is formed by the first half body 13 and the second half body 14 being matched together, when assembling, it is only necessary to install the intermediate connection structure 2 into the first half body 13 and the second half body 14, and then splice and connect the first half body 13 and the second half body 14, so that the chain link connection structure 1 and the intermediate connection structure 2 can be connected, which is conducive to simplifying the assembly difficulty of the anti-twist device 10 and improving the assembly efficiency of the anti-twist device 10.

[0039] In order to facilitate connecting the first half body 13 and the second half body 14, optionally, as Figure 1 and Figure 2As shown, a plurality of connecting lugs 17 are formed on the first half body 13 and the second half body 14, and a first connecting hole 18 is formed on each connecting lug 17. The first fastener 3 can pass through the first connecting hole 18 of the connecting lug 17 on the first half body 13 and the first connecting hole 18 of the connecting lug 17 on the second half body 14 to connect the first half body 13 and the second half body 14. The connection between the first half body 13 and the second half body 14 connected by the first fastener 3 is reliable and easy to assemble and disassemble, which is conducive to improving the disassembly and assembly efficiency of the entire anti-twist device 10.

[0040] Here, it should be noted that the present disclosure does not limit the specific type of the above-mentioned first fastener 3. As an embodiment of the present disclosure, the above-mentioned first fastener 3 includes a bolt and a nut. The bolt can pass through the first connecting hole 18 of the connecting lug 17 on the first half body 13 and the first connecting hole 18 of the connecting lug 17 on the second half body 14 and be threadedly connected to the nut, thereby connecting the first half body 13 and the second half body 14.

[0041] In other embodiments, the first fastener 3 may also be a rivet that passes through the first connection hole 18 of the connection lug 17 on the first half body 13 and the first connection hole 18 of the connection lug 17 on the second half body 14 to rivet the first half body 13 and the second half body 14 together.

[0042] In other embodiments, one of the first half body 13 and the second half body 14 may be formed with a buckle, and the other of the first half body 13 and the second half body 14 may be formed with a foot. The foot and the buckle cooperate with each other to achieve the connection between the first half body 13 and the second half body 14.

[0043] The present disclosure does not limit the specific shape of the above-mentioned chain link connection structure 1. As an embodiment of the present disclosure, Figure 1 and Figure 2 As shown, each link connection structure 1 includes a rotating connection part 19, a link connection part 20 and an arc-shaped reinforcing plate 21. The rotating connection part 19 is formed in an annular shape. The connecting groove 11 and the limiting part 12 are formed on the rotating connection part 19. The link connection part 20 is used to connect with the link 30. A plurality of arc-shaped reinforcing plates 21 are arranged on each link connection part 20. The outer surface of each arc-shaped reinforcing plate 21 is flush with the outer surface of the rotating connection part 19. Through the link connection part 20, the link connection structure 1 can be connected with the link 30 in the mooring chain 100.

[0044] In addition, since a plurality of arc-shaped reinforcement plates 21 are provided on each link connection portion 20, and the outer surface of each arc-shaped reinforcement plate 21 is flush with the outer surface of the rotating connection portion 19, on the one hand, the arc-shaped reinforcement plates 21 can improve the overall strength of the link connection structure 1, thereby improving the overall strength of the anti-twist device 10; on the other hand, the arc-shaped reinforcement plates 21 whose outer surfaces are flush with the outer surface of the rotating connection portion 19 can also improve the aesthetics of the entire link connection structure 1.

[0045] Here, it can be understood that, for the embodiment in which the link connection structure 1 includes the first half body 13 and the second half body 14, a part of the rotation connection part 19 is on the first half body 13, and another part is on the second half body 14, and a part of the link connection part 20 is on the first half body 13, and another part is on the second half body 14.

[0046] The present disclosure does not limit the specific connection method between the above-mentioned link connection structure 1 and the link 30 in the mooring chain 100. As an embodiment of the present disclosure, Figures 1 to 3 As shown, the two chain link connection structures 1 are both formed with a second connection hole 22, and the second fastener 40 can pass through the second connection hole 22 and the third connection hole on the D-shaped shackle 50 connected to the chain link 30, so as to connect the chain link connection structure 1 with the chain link 30. In other words, the D-shaped shackle 50 is connected to the chain link 30, and the chain link connection structure 1 is connected to the D-shaped shackle 50 through the second fastener 40, thereby realizing the connection between the chain link connection structure 1 and the chain link 30.

[0047] Here, it can be understood that, for the embodiment in which the chain link connection structure 1 includes the first half body 13 and the second half body 14, the first half body 13 and the second half body 14 are both provided with the second connection hole 22. In this way, when the two chain link connection parts 20 are aligned, the two second connection holes 22 are coaxial, and the second fastener 40 can pass through the two second connection holes 22 and the third connection hole on the D-shaped shackle 50, thereby connecting the chain link connection structure 1 with the D-shaped shackle 50.

[0048] Here, it should be noted that the present disclosure does not limit the specific type of the above-mentioned second fastener 40. As an embodiment of the present disclosure, the above-mentioned second fastener 40 includes a bolt and a nut. The bolt can pass through the second connecting hole 22 and the third connecting hole on the D-shaped shackle 50, thereby connecting the chain link connection structure 1 and the D-shaped shackle 50.

[0049] Optionally, the second fastener 40 may also be a rivet. The rivet may also pass through the second connection hole 22 and the third connection hole on the D-shaped shackle 50, so as to connect the chain link connection structure 1 and the D-shaped shackle 50 by riveting.

[0050] According to a second aspect of the present disclosure, a mooring chain 100 is provided, comprising a plurality of chain links 30 and the anti-twist device 10 as described above, wherein the anti-twist device 10 is disposed between at least two adjacent chain links 30 of the plurality of chain links 30, and two chain link connection structures 1 of the anti-twist device 10 are respectively connected to two adjacent chain links 30. The mooring chain 100 has all the beneficial effects of the anti-twist device 10 described above, which will not be described in detail herein.

[0051] It should be noted that the present disclosure does not limit the specific number of the anti-twist devices 10. In the mooring chain 100, the number of the anti-twist devices 10 can be one, or the number of the anti-twist devices 10 can be multiple. Multiple anti-twist devices 10 are arranged at intervals in the mooring chain, which is helpful to improve the anti-twist effect of the mooring chain.

[0052] In order to facilitate the connection of the anti-twist device 10 to the link 30 in the mooring chain 100, optionally, as Figure 3 As shown, the mooring chain 100 may further include a D-shaped shackle 50 and a second fastener 40, each of two adjacent links 30 is connected with a D-shaped shackle 50, the D-shaped shackle 50 has two third connection holes, and each of the two link connection structures 1 is formed with a second connection hole 22, the second connection hole 22 is located between the two third connection holes, and the second fastener 40 can pass through the second connection hole 22 and the third connection hole.

[0053] In this way, there is no need to destroy or change the structure of the original chain link 30 on the mooring chain 100. The connection between the anti-twist device 10 and the chain link 30 can be achieved only through the D-shaped shackle 50 and the second fastener 40. The disassembly and assembly of the anti-twist device 10 in the mooring chain 100 is relatively convenient and efficient.

[0054] According to a third aspect of the present disclosure, a method for assembling the mooring chain 100 is provided, such as Figure 4 As shown, the following steps are included: S41: connecting the two chain link connection structures 1 of the anti-twist device 10 to each other, and allowing the two chain link connection structures 1 to rotate relative to each other; S42: D-shaped shackles 50 are respectively installed on two adjacent chain links 30; S43: insert one end of the two chain link connection structures 1 into the corresponding D-shaped shackle 50, so that the second connection hole 22 on the chain link connection structure 1 is located between the two third connection holes on the D-shaped shackle 50, and the second connection hole 22 is coaxial with the third connection hole; S44: Pass the second fastener 40 through the second connection hole 22 and the two third connection holes to connect the anti-twist device 10 to the D-shaped shackles 50 on two adjacent chain links 30 .

[0055] Through the above steps, the mooring chain 100 can be assembled, and the assembly of the mooring chain 100 is relatively simple.

[0056] Specifically, in one embodiment of the present disclosure, the anti-twist device 10 also includes an intermediate connecting structure 2, the intermediate connecting structure 2 includes a rod body 23 and two connecting plates 24 respectively located at the two ends of the rod body 23, and the chain link connecting structure 1 includes a first half body 13 and a second half body 14, both of which are provided with an arcuate groove 15, and an arcuate flange 16 is formed at the notch of the arcuate groove 15. The arcuate groove 15 on the first half body 13 and the arcuate groove 15 on the second half body 14 can be assembled with each other to form a connecting groove 11, and the arcuate flange 16 on the first half body 13 and the arcuate flange 16 on the second half body 14 can be assembled with each other to form a limiting portion 12. A plurality of connecting lugs 17 are formed on the first half body 13 and the second half body 14, and a first connecting hole 18 is formed on each connecting lug 17. For the above embodiment, if Figure 5 As shown, the above step S41 may specifically include: S411: respectively buckle the first half bodies 13 and the second half bodies 14 of the two link connection structures 1 onto the intermediate connection structure 2, so that the connection plate 24 of the intermediate connection structure 2 is accommodated in the connection groove 11 formed by the arc groove 15 of the first half body 13 and the arc groove 15 of the second half body 14, and the connection plate 24 is stopped by the limit portion 12 formed by the arc flange 16 of the first half body 13 and the arc flange 16 of the second half body 14; S412 : Pass the first fastener 3 through the first connecting hole 18 of the connecting lug 17 on the first half body 13 and the first connecting hole 18 of the connecting lug 17 on the second half body 14 to connect the first half body 13 with the second half body 14 .

[0057] Through the above steps, the assembly of the anti-twist device 10 can be achieved, and the assembly of the anti-twist device 10 is relatively simple.

[0058] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0059] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0060] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. An anti-twist device for a mooring chain, characterized in that: It comprises two chain link connection structures, and the two chain link connection structures are respectively used to connect with two adjacent chain links of the mooring chain; Wherein, the two chain link connection structures can be connected to each other and can rotate relative to each other.

2. The anti-twist device according to claim 1, characterized in that: The anti-twist device further comprises an intermediate connection structure, wherein the intermediate connection structure is located between the two chain link connection structures, and the two chain link connection structures are both axially locked and circumferentially rotatably connected to the intermediate connection structure.

3. The anti-twist device according to claim 2, characterized in that: The intermediate connection structure includes a rod body and two connection plates respectively located at two ends of the rod body, wherein the connection plates protrude from the rod body in the radial direction of the rod body, and the two chain link connection structures are both provided with connection grooves, and the two connection plates are respectively rotatably located in the connection grooves of the two chain link connection structures; A limiting portion is formed at the notch of each connecting groove, one end of each connecting plate abuts against the bottom wall of the corresponding connecting groove, and the other end of each connecting plate abuts against the corresponding limiting portion, and the limiting portions on the two chain link connection structures are clamped between the two connecting plates.

4. The anti-twist device according to claim 3, characterized in that: Each of the chain link connection structures comprises a first half body and a second half body, wherein the first half body and the second half body are connected in abutment with each other; The first half body and the second half body are both provided with arc-shaped grooves, and arc-shaped flanges are formed at the groove openings of the arc-shaped grooves. The arc-shaped grooves on the first half body and the arc-shaped grooves on the second half body are joined together to form the connecting groove, and the arc-shaped flanges on the first half body and the arc-shaped flanges on the second half body are joined together to form the limiting portion.

5. The anti-twist device according to claim 4, characterized in that: A plurality of connecting lugs are formed on the first half body and the second half body, each of the connecting lugs is formed with a first connecting hole, and a first fastener can pass through the first connecting hole of the connecting lug on the first half body and the first connecting hole of the connecting lug on the second half body to connect the first half body and the second half body.

6. The anti-twist device according to any one of claims 3 to 5, characterized in that: Each of the chain link connection structures comprises a rotating connection portion, a chain link connection portion and an arc-shaped reinforcing plate, the rotating connection portion is formed in a ring shape, the connection groove and the limiting portion are both formed on the rotating connection portion, and the chain link connection portion is used to connect with the chain link; A plurality of arc-shaped reinforcing plates are arranged on each of the chain link connecting parts, and the outer surface of each of the arc-shaped reinforcing plates is flush with the outer surface of the rotating connecting part.

7. The anti-twist device according to any one of claims 1 to 5, characterized in that: A second connection hole is formed on each of the two chain link connection structures, and a second fastener can pass through the second connection hole and a third connection hole on a D-shaped shackle connected to the chain link to connect the chain link connection structure with the chain link.

8. A mooring chain, characterized in that: It comprises a plurality of chain links and an anti-twist device according to any one of claims 1 to 7, wherein the anti-twist device is arranged between at least two adjacent chain links among the plurality of chain links, and the two chain link connecting structures of the anti-twist device are respectively connected to two adjacent chain links.

9. The mooring chain according to claim 8, characterized in that The mooring chain further comprises a D-shaped shackle and a second fastener, two adjacent chain links are connected with the D-shaped shackle, and the D-shaped shackle has two third connecting holes; A second connection hole is formed on each of the two chain link connection structures. The second connection hole is located between the two third connection holes. The second fastener can pass through the second connection hole and the third connection hole.

10. A method for assembling a mooring chain according to claim 9, characterized in that: include: Connecting the two chain link connection structures of the anti-twist device to each other and allowing the two chain link connection structures to rotate relative to each other; The D-shaped shackles are respectively provided on two adjacent chain links; Insert one end of the two chain link connection structures into the corresponding D-shaped shackles, so that the second connection hole on the chain link connection structure is located between the two third connection holes on the D-shaped shackle, and the second connection hole is coaxial with the third connection hole; The second fastener is passed through the second connecting hole and the two third connecting holes to connect the anti-twist device to the D-shaped shackles on two adjacent chain links.

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