Marine fairlead structure

Abstract

The ship comprises a bulwark and is further provided with a hole surrounding piece, the diameter of the hole surrounding piece ranges from 120 mm to 150 mm, the hole surrounding piece is divided into two parts along the center of the extending direction of the hole surrounding piece, the two parts are connected end to end to form a fairlead in a surrounding mode, a fairlead is formed in the fairlead, and the fairlead is arranged in the fairlead. The circular arc radius of the contact face of the fairlead and the mooring rope is increased, the diameter range of the hole surrounding piece is set to be 120 mm to 150 mm, the overall structural strength of the fairlead is effectively improved, and the fairlead is prevented from being damaged by loads acting on the mooring rope; and the cable guide piece made of the large-diameter hole surrounding piece can increase the contact area of the cable guide hole and the cable, the contact surface stress of the cable guide hole and the cable is reduced, and the abrasion of the cable guide hole to the cable is effectively improved. In addition, the fairlead and the formed fairlead can be obtained by cutting and welding the hole surrounding piece, and the fairlead is simple in structure and easy to manufacture.

Description

Technical Field

[0001] The present invention relates to the technical field of ships, and particularly to a marine fairlead structure and a processing method thereof. Background Art

[0002] A fairlead (also known as a Panama hole) is a circular or oval-shaped cast steel piece, which is an essential fairlead device during the ship's mooring process. The fairlead is generally embedded in the bulwark (mostly in the middle of the ship). When the mooring line (cable) passes through the fairlead, the contact surface is arc-shaped to avoid the cutting effect of the bulwark on the mooring line and facilitate the smooth passage of the mooring line shackle.

[0003] However, existing aluminum alloy ships usually use self-made fairleads, which are usually made into closed fairleads with small-diameter round bars. Such fairleads have problems of wearing the mooring line and insufficient strength due to the small edge arc. Utility Model Content

[0004] The present utility model aims to solve at least one of the problems in the related art to some extent. For this purpose, one of the objectives of the present utility model is to provide a marine fairlead structure, which is used to improve the structural strength of the fairlead, and has a simple structure and is easy to manufacture.

[0005] A marine fairlead structure, the marine fairlead structure is used for a ship, the ship includes a bulwark, the ship is also provided with a hole surrounding member, the diameter range of the hole surrounding member is 120 mm to 150 mm, the hole surrounding member is divided into two parts along the center of its extending direction, and the two parts are joined end to end to enclose a fairlead member, a fairlead hole is formed in the fairlead member, and the fairlead member is connected to the bulwark.

[0006] Further, the fairlead member is a round bar, the round bar is divided into two semi-round bars along the center of its extending direction, the two semi-round bars are joined end to end to form a fairlead member, and the outer arc of the semi-round bar faces the inside of the fairlead member.

[0007] Further, the material of the fairlead member is aluminum alloy, stainless steel, nickel-based alloy or titanium alloy.

[0008] Further, the cross-sectional shape of the fairlead member is a fillet rectangle.

[0009] Further, a wear-resistant coating is provided on the inner side surface of the fairlead member.

[0010] Further, the ship also includes a reinforcing profile, the side surface of the reinforcing profile is connected to the bulwark, and the end is connected to the outer side surface of the fairlead member.

[0011] Further, the number of the reinforcing profiles is multiple, and the multiple reinforcing profiles are connected to the outer side surface of the fairlead member at intervals.

[0012] Further, a groove is provided on one side of the cable guide member near the entrance of the cable guide hole, and the groove is arranged along the edge of the cable guide hole.

[0013] Further, a lighting lamp is connected to one side of the hole wall of the cable guide hole near the top.

[0014] Further, a drainage groove is formed on one side of the hole wall of the cable guide hole near the bottom.

[0015] The above technical solutions provided by the embodiments of the present application have the following advantages compared with the prior art:

[0016] By increasing the arc radius of the contact surface between the cable guide hole and the cable, and setting the diameter range of the hole surrounding member to 120 mm to 150 mm, the overall structural strength of the cable guide member is effectively improved, preventing the load acting on the cable from damaging the cable guide hole; moreover, the cable guide member made of a large-diameter hole surrounding member can increase the contact area between the cable guide hole and the cable, reduce the stress on the contact surface between the two, and thus effectively improve the wear of the cable guide hole on the cable. Furthermore, the cable guide member and the formed cable guide hole can be obtained by using one hole surrounding member for splitting and welding, with a simple structure and easy manufacturing. Description of the Drawings

[0017] The drawings herein are incorporated into the specification and form a part of the specification, showing embodiments in accordance with the present utility model and, together with the specification, are used to explain the principles of the present utility model.

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

[0019] In the drawings:

[0020] Figure 1 is a schematic structural diagram of an embodiment of the marine cable guide hole structure of the present application;

[0021] Figure 2 is a front view of an embodiment of the marine cable guide hole structure of the present application;

[0022] Figure 3 is a schematic structural diagram of the steps of the processing method of the marine cable guide hole of the present application;

[0023] Figure 4 is a schematic structural diagram of another embodiment of the marine cable guide hole structure of the present application.

[0024] Reference Signs:

[0025] 1. A structure of a marine fairlead; 10. Fairlead member; 11. Fairlead hole; 13. Groove; 15. Drainage groove; 100. Bulwark; 200. Reinforcing profile. Detailed implementation manners

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0027] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0028] As Figure 1 - Figure 3 As shown, a structure of a marine fairlead 1 provided by the present application is used for a ship. The ship includes a bulwark 100. The ship is also provided with a hole-enclosing member. The diameter range of the hole-enclosing member is 120 mm to 150 mm. The hole-enclosing member is divided into two parts along the center of its extending direction, and the two parts are joined end to end to enclose a fairlead member 10. A fairlead hole 11 is formed inside the fairlead member 10, and the fairlead member 10 is connected to the bulwark 100.

[0029] For the fairlead hole 11 inside the fairlead member 10, by increasing the arc radius of the contact surface between the fairlead hole 11 and the cable, the wear of the cable caused by friction when passing through the fairlead hole 11 is effectively alleviated, the service life of the cable is greatly extended, and the maintenance cost is reduced.

[0030] More importantly, the present application also performs a structural strengthening treatment on the fairlead hole 11. This strengthening design effectively prevents the fairlead hole 11 from being damaged due to excessive load.

[0031] In terms of manufacturing process, by using a single hole-enclosing member for simple splitting and welding operations, a fairlead member 10 with a complete structure and excellent performance and the fairlead hole 11 inside it can be easily obtained. This design not only simplifies the production process, reduces the manufacturing cost, but also makes the maintenance and replacement of the fairlead hole 11 structure extremely convenient.

[0032] In the detailed implementation manners, the material selection of the hole-enclosing member is also crucial. The preferred material should have good corrosion resistance and sufficient mechanical strength to ensure that it does not get damaged during long-term use in a harsh marine environment. For example, stainless steel or specially treated high-strength steel can be used as the material of the hole-enclosing member.

[0033] In addition, the shape design of the hole-enclosing member also needs to consider the specific needs of the ship. In some cases, the hole-enclosing member can be designed to have a certain angle of inclination to adapt to the cable tension at different angles, thereby further improving the stability and safety of the fairlead 11.

[0034] In terms of processing methods, the present application also provides an efficient processing flow. First, the hole-enclosing member material is cut into the required size, and then processed by a precision CNC machine tool to ensure that the dimensional accuracy and arc radius of the cable guide hole 11 meet the design requirements. Next, the processed hole-enclosing member is welded to form a complete cable guide 10. Finally, non-destructive testing is performed on the welding parts to ensure the welding quality, thereby ensuring the structural strength and service life of the cable guide hole 11.

[0035] Through the above processing method, the cable guides 10 that meet the requirements can be mass-produced, which greatly improves the production efficiency and ensures the quality consistency of the products. This processing method is not only suitable for large-scale production, but also suitable for small-batch customized production to meet the needs of different customers.

[0036] The lower limit of the diameter of the hole-enclosing member is 120 mm, which may be based on the consideration of the structural strength of the equipment to ensure that the hole-enclosing member can withstand sufficient load without deformation or damage. The upper limit of 150 mm is to optimize the use of materials, reduce the overall weight, or meet the needs of a specific space layout. It is understandable that the diameter of the hole-enclosing member can be 120 mm, 125 mm, 130 mm, 135 mm, etc.

[0037] In summary, the setting of the diameter range of the hole-enclosing parts from 120mm to 150mm is the result of in-depth consideration of factors such as process accuracy, material selection, and application scenarios. This range not only ensures the superior performance and reliability of the hole-enclosing parts, but also provides a strong guarantee for their wide application in various industrial fields. In the future development, with the continuous advancement of science and technology and the continuous innovation of technology, we have reason to believe that the diameter range of the hole-enclosing parts will be more accurate and reasonable, bringing more convenience and benefits to industrial manufacturing.

[0038] Furthermore, the cable guide 10 is a round rod, which is divided into two semi-round rods along the center of its extension direction. The two semi-round rods are connected end to end to form the cable guide 10, and the outer arcs of the semi-round rods are arranged toward the inner side of the cable guide 10.

[0039] The center of the round rod in its extension direction is cleverly divided into two completely symmetrical semi-round rods. This design not only reflects the engineers' ultimate pursuit of space utilization, but also virtually enhances the stability and durability of the cable guide 10.

[0040] When these two semi-circular rods are joined end to end, a complete fairlead 10 is formed. The outer arcs of the two semi-circular rods face the inside of the fairlead 10. This design enables the fairlead 10 to more evenly disperse the force when bearing the huge tensile force from the cable, thus effectively avoiding the situation of single-point force application and greatly improving its load-bearing capacity and service life.

[0041] Due to the splicing design of the semi-circular rods and the ingenious design with the outer arcs facing inwards, the fairlead 10 can maintain stable performance in harsh marine environments. It can not only effectively disperse the tensile force of the cable, reduce the degree of wear, but also reduce the frictional resistance of the cable during the sliding process through its smooth arc surface, further improving the use efficiency and safety of the cable.

[0042] In addition, it is worth mentioning that the design of this fairlead 10 also fully considers the convenience of maintenance. Since the semi-circular rod splicing method is adopted, when it is necessary to replace or repair the fairlead 10, the disassembly and assembly work can be carried out more conveniently. This not only reduces the difficulty and cost of maintenance, but also improves work efficiency and safety.

[0043] Furthermore, the material of the fairlead 10 is aluminum alloy, stainless steel, nickel-based alloy or titanium alloy.

[0044] Aluminum alloy has been widely used in the fields of shipbuilding and ocean engineering due to its light weight, high strength, good corrosion resistance and good processing performance. As the material of the fairlead 10, aluminum alloy can not only effectively reduce the weight of the equipment, reduce energy consumption, but also maintain good stability in harsh environments such as humidity and salt spray.

[0045] Stainless steel is famous for its excellent corrosion resistance, especially outstanding in corrosive media containing chloride ions. In the marine environment, the stainless steel fairlead 10 can keep its surface smooth for a long time, reducing the increase in friction and wear caused by corrosion. Common stainless steels, due to their good mechanical properties and processing performance, become one of the preferred materials for manufacturing the fairlead 10. In addition, stainless steel also has high strength and toughness, and can withstand large tensile forces and impact forces.

[0046] Nickel-based alloys are a class of special materials with excellent high-temperature resistance, corrosion resistance and wear resistance. In high-temperature, high-pressure and strong-corrosion environments, the nickel-based alloy fairlead 10 shows excellent performance stability.

[0047] Titanium alloys are known for their low density, high strength, high corrosion resistance and good biocompatibility. Although they are relatively expensive, they are undoubtedly an ideal choice for applications where weight and strength are strictly required. In shipbuilding and marine engineering, titanium alloy fairleads 10 can provide excellent load-bearing capacity and corrosion resistance while reducing weight. In addition, titanium alloys also have good fatigue resistance and thermal stability, and can maintain stable performance in complex and changing marine environments.

[0048] Furthermore, the cross-sectional shape of the cable guide 10 is a rounded rectangle.

[0049] Compared with the traditional rectangular or circular cross-section, the rounded rectangle combines the advantages of both. Its straight edge portion can provide good structural strength and rigidity, ensuring stability when subjected to huge tensile forces; and the presence of rounded corners effectively reduces stress concentration and reduces the risk of fatigue damage caused by excessive local stress. This design cleverly improves the service life and safety of the cable guide 10 while ensuring strength. The cable guide 10 with a rounded rectangular cross-section can not only effectively disperse and resist these external forces, but also maintain a good working condition during long-term use, reducing downtime and maintenance time caused by component damage, and improving the operating efficiency of the offshore platform.

[0050] In addition, the design of the rounded rectangular cross section also takes into account the convenience of the manufacturing process. In modern manufacturing, the use of advanced technologies such as CNC machining and precision casting can easily achieve accurate manufacturing of the rounded rectangular cross section. This process not only improves production efficiency, but also ensures the quality stability and consistency of the cable guide 10. At the same time, the rounded rectangular cross section is also convenient for subsequent painting, anti-corrosion and other treatment processes, further extending the service life of the cable guide 10.

[0051] Furthermore, the inner side surface of the cable guide 10 is coated with a wear-resistant coating.

[0052] The inner surface of the cable guide 10 is specially treated and coated with a wear-resistant coating. The purpose of this coating is to significantly reduce the wear caused by the friction between the cable and the inner surface of the cable guide 10 during use, thereby effectively extending the service life of the cable. Through the protection of this coating, the cable can better resist wear and damage, ensuring durability and reliability in various working environments. The wear-resistant coating can be applied to the inner surface of the cable guide 10 using surface treatment techniques such as electroplating and spraying.

[0053] Furthermore, the ship further comprises a reinforcing profile 200 , the side of the reinforcing profile 200 is connected to the bulwark 100 , and the end of the reinforcing profile 200 is connected to the outer side of the fairlead 10 .

[0054] Reinforced profile 200 is a profile used to enhance the strength of the hull structure. It is usually made of high-strength steel and has excellent bending, torsion and compression resistance. It can withstand various loads brought by wave impact, cargo pressure and bad weather.

[0055] The end of the reinforcing profile 200 is cleverly connected to the outer side of the cable guide 10. This design not only enhances the supporting force of the cable guide 10, but also improves its ability to resist wind pressure and surge. In strong wind and huge waves, this close connection can ensure that the cable is stable and effectively prevent accidents caused by cable breakage or loosening.

[0056] In order to further improve the effectiveness of the reinforced profile 200, ship designers will also perform anti-corrosion treatment on its surface, such as spraying anti-rust paint or using hot-dip galvanizing technology, to extend its service life and reduce maintenance costs. In addition, some high-end ships will also use reinforced profiles 200 made of composite materials. These materials are not only light in weight and high in strength, but also have excellent corrosion resistance and fatigue resistance, which can further improve the overall performance of the ship.

[0057] Furthermore, there are multiple reinforcing profiles 200 , and the multiple reinforcing profiles 200 are connected to the outer side surface of the cable guide 10 at intervals.

[0058] There are multiple reinforcing profiles 200, which are spaced apart and connected to the outer side of the cable guide 10 to ensure structural strength while taking into account the lightweight, economical and sustainable structure to achieve maximum utilization and protection of natural resources.

[0059] In the design of the cable guide 10, multiple reinforcing profiles 200 are cleverly spaced and connected to the outer side thereof, forming a solid defense line, effectively resisting the impact and pressure of the external environment. This layout not only improves the overall strength of the cable guide 10, but also enables the structure to evenly disperse stress when subjected to force, thereby avoiding damage caused by single-point overload.

[0060] Furthermore, if Figure 4 As shown, a groove 13 is provided on one side of the cable guide 10 close to the entrance of the cable guide hole 11 , and the groove 13 is provided along the edge of the cable guide hole 11 .

[0061] A groove 13 is designed at the entrance of the fairlead 11 to naturally keep fingers away from the dangerous area. A circle of grooves 13 is designed around the entrance of the fairlead 11 so that when the operator holds the cable, the fingers are naturally placed in the grooves 13, away from the dangerous area, in order to protect the user's fingers from being pinched during operation, especially in a narrow space like the fairlead 11. Specifically, a circle of grooves 13 is designed around the entrance of the fairlead 11, aiming to provide a natural placement position when the operator holds the cable. When the operator holds the cable and prepares to pass it through the fairlead 11, the fingers will naturally fall into these grooves 13. In this way, the fingers are away from the dangerous area of the fairlead 11, especially in those narrow spaces where the fingers are more likely to be pinched or suffer other injuries.

[0062] Furthermore, a lighting lamp is connected to the side of the hole wall of the fairlead 11 near the top.

[0063] On the side of the hole wall of the fairlead 11 near the top, a lighting lamp is cleverly connected and installed. This lighting lamp can provide the necessary light source at night or in low-light conditions, ensuring that the operator can clearly see the internal situation of the fairlead 11, thereby improving the safety and efficiency of the operation.

[0064] In the structural design of the fairlead 11, in addition to the basic functions, other multiple functions are integrated, such as drain holes, lighting lamps or sensor interfaces. Such a design makes the fairlead 11 not just a simple cable guiding device, but a multi-functional structure. The drain holes can effectively drain the accumulated water in the hole, preventing corrosion or other problems caused by the accumulated water, thereby extending the service life of the fairlead 11. As mentioned above, the addition of the lighting lamp provides an additional light source, enabling clear operation in low-light environments. In addition, the setting of the sensor interface allows various sensors, such as temperature sensors, humidity sensors, etc., to be installed on the fairlead 11, further enhancing the intelligence and automation level of the fairlead 11 and providing convenience for the monitoring and management of the entire system. Through this multi-functional design, the practicality of the fairlead 11 has been greatly improved, and it can better meet various complex working environments and requirements.

[0065] Furthermore, as Figure 4 shown, a drainage groove 15 is opened on the side of the hole wall of the fairlead 11 near the bottom.

[0066] A drainage groove 15 is specially opened on the side of the hole wall of the fairlead 11 near the bottom. The design of this drainage groove 15 is to effectively guide the water flow inside the fairlead 11, thereby taking away the accumulated dirt and impurities. In this way, it can ensure the cleanliness and smoothness of the fairlead 11 and avoid affecting its normal use function due to dirt accumulation.

[0067] It can be understood that the above embodiments only represent the preferred embodiments of the present utility model, and the description thereof is relatively specific and detailed. However, it should not be construed as a limitation to the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, the above technical features can be freely combined, and several modifications and improvements can also be made, which all fall within the protection scope of the present utility model. Therefore, all equivalent transformations and modifications made to the scope of the claims of the present utility model shall fall within the scope covered by the claims of the present utility model.

Claims

1. A fairlead structure for a ship, which is used for a ship, the ship including a bulwark, characterized in that, The ship is also provided with a hole surrounding member, the diameter range of the hole surrounding member is 120 mm to 150 mm, the hole surrounding member is divided into two parts along the center of its extension direction, and the two parts are joined end to end to enclose a cable guiding member, a cable guiding hole is formed in the cable guiding member, and the cable guiding member is connected to the bulwark.

2. The structure of a marine fairlead according to claim 1, wherein The cable guiding member is a round bar, the cable guiding member is divided into two semi-circular bars along the center of its extension direction, and the two semi-circular bars are joined end to end to form a cable guiding member, and the outer arc of the semi-circular bar faces the inside of the cable guiding member.

3. The structure of a marine fairlead according to claim 2, characterized in that, The material of the cable guiding member is aluminum alloy, stainless steel, nickel-based alloy or titanium alloy.

4. A structure of a marine fairlead according to any one of claims 1 to 3, characterized in that The cross-sectional shape of the cable guiding member is a rounded rectangle.

5. A structure of a marine fairlead according to any one of claims 1 to 3, characterized in that The inner side surface of the cable guiding member is coated with a wear-resistant coating.

6. A marine fairlead structure according to any one of claims 1 to 3, characterized in that, The ship also includes a reinforcing profile, the side surface of the reinforcing profile is connected to the bulwark, and the end is connected to the outer side surface of the cable guiding member.

7. The structure of a marine fairlead according to claim 6, characterized in that, The number of the reinforcing profiles is multiple, and the multiple reinforcing profiles are connected to the outer side surface of the cable guiding member at intervals.

8. A structure of a marine fairlead according to any one of claims 1 to 3, characterized in that A groove is provided on one side of the cable guiding member close to the entrance of the cable guiding hole, and the groove is arranged along the edge of the cable guiding hole.

9. A structure of a marine fairlead according to any one of claims 1 to 3, characterized in that, A lighting lamp is connected to one side of the hole wall of the cable guiding hole close to the top.

10. A marine fairlead structure according to any one of claims 1 to 3, characterized in that, A drainage groove is formed on one side of the hole wall of the cable guiding hole close to the bottom.

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