Multi-directional roller fender on bow side of unmanned ship

Abstract

The utility model discloses an unmanned ship bow side multi-direction roller fender which is suitable for an unmanned ship bow side and comprises a bottom plate, a protection plate, a first connecting piece, a second connecting piece, a roller set and a buffering set, the bottom plate is arranged on the ship bow side, the protection plate and the bottom plate are arranged in an inclined mode, and the first head end of the protection plate is connected with the bottom plate through the first connecting piece; the first tail end is connected with the bottom plate through a second connecting piece; the roller group is arranged on the protective plate and comprises a plurality of rollers, and at least part of each roller protrudes out of the protective plate and faces the outer side; the buffering set is arranged between the first tail end and the bottom plate. According to the utility model, the inclined guard plate is matched with the roller group, so that the tangential sliding friction of the contact surface is converted into rolling friction during berthing, and the frictional resistance and impact are obviously reduced; the buffering set provides flexible supporting, receding buffering and automatic resetting are achieved, and the problems that a traditional fender is large in friction, poor in multi-direction adaptability and limited in space are effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of ship fender technology, and in particular to a multi-directional roller fender on the bow side of an unmanned vessel. Background Technology

[0002] During berthing, guided approach, or convoy berthing at docks, unmanned surface vessels (USVs) often come into contact with quay walls, guide piles, or the side of the mother ship. Traditional fender structures are mostly made of solid rubber, which, while providing some cushioning, suffer from high frictional resistance and significant heat accumulation, easily leading to scratches on the hull coating or even jamming. Existing single-row or one-way roller fenders are less adaptable to complex and varied contact directions, making it difficult to effectively convert tangential displacements in different directions.

[0003] In addition, since the bow space of unmanned vessels is usually quite limited, how to achieve flexible clearance, reliable locking and rapid reset of the fender within a limited installation area, while ensuring structural compactness and stable movement, has become a challenge in existing fender designs.

[0004] Therefore, there is an urgent need for a fender device that can adapt to multi-directional contact, has low-resistance rolling characteristics, and can realize a mechanical closed loop of yielding, locking, and returning in a confined space, so as to improve the operational adaptability and protective effectiveness of unmanned vessels during berthing and ramming operations. Summary of the Invention

[0005] In view of this, the purpose of this utility model is to propose a multi-directional roller fender on the bow side of an unmanned vessel, which solves the problems of high friction, poor multi-directional adaptability and limited bow side space of traditional fenders by using an inclined guard plate and a multi-roller group to buffer the structure.

[0006] To achieve the aforementioned technical objectives, the technical solution adopted by this utility model is as follows: a multi-directional roller fender on the bow side of an unmanned vessel, applicable to unmanned vessels. The unmanned vessel has a bow side, and the roller fender includes a bottom plate, a protective plate, a first connecting member, a second connecting member, a roller assembly, and a buffer assembly. The bottom plate is disposed on the bow side; the protective plate includes a first bow end and a first stern end, and the protective plate is inclined to the bottom plate; the first connecting member is disposed between the first bow end and the bottom plate; the second connecting member is disposed between the first stern end and the bottom plate; the roller assembly is disposed on the protective plate, and the roller assembly includes multiple rollers, each roller at least partially protruding from the protective plate and facing outward; the buffer assembly is disposed between the first stern end and the bottom plate.

[0007] In some embodiments, the base plate includes a second proximal end; a first connector is disposed on the second proximal end; the roller fender also includes a first hinge seat disposed on the lower surface of the first proximal end, and the first hinge seat is hinged to the first connector.

[0008] In some embodiments, the base plate includes a second tail end, and the roller fender further includes a second hinge seat and a third hinge seat. The second hinge seat is disposed at the second tail end, and the second connector is hinged to the second tail end through the second hinge seat. The third hinge seat is disposed at the first tail end, and the second connector is hinged to the first tail end through the third hinge seat.

[0009] In some embodiments, the second connector includes a first rod portion and a second rod portion, the first rod portion and the second rod portion being hinged together, the first rod portion being hinged together with a first tail end, and the second rod portion being hinged together with a second tail end.

[0010] In some embodiments, the number of second connectors is two, and a buffer group is disposed between the two second connectors.

[0011] In some embodiments, there are two buffer groups, arranged side by side between the second connectors.

[0012] In some embodiments, the buffer group includes a first limiting block, a second limiting block, and an elastic element. The first limiting block is disposed on the base plate; the second limiting block is disposed on the guard plate; and the elastic element is disposed between the first limiting block and the second limiting block.

[0013] In some embodiments, the buffer assembly further includes a telescopic rod disposed between the first limiting block and the second limiting block, with an elastic element sleeved around the periphery of the telescopic rod.

[0014] In some embodiments, the protective plate has a plurality of mounting holes, which are distributed in a preset manner, and each mounting hole is equipped with a roller assembly; the roller assembly also includes a roller shaft, which is disposed in the mounting hole, and the roller is sleeved on the roller shaft.

[0015] In some embodiments, the number of first connectors is three; the three first connectors are arranged side by side between the base plate and the guard plate.

[0016] By adopting the above technical solution, the beneficial effects of this utility model compared with the prior art are as follows:

[0017] This invention provides a multi-directional roller fender for the bow side of an unmanned surface vessel (USV), applicable to the bow side of USVs. It includes a bottom plate, a fender plate, a first connector, a second connector, a roller assembly, and a buffer assembly. The bottom plate is located on the bow side, and the fender plate is inclined to the bottom plate. Its first bow end is connected to the bottom plate via the first connector, and its first stern end is connected to the bottom plate via the second connector. The roller assembly is located on the fender plate and includes multiple rollers, each roller at least partially protruding from the fender plate and facing outwards. The buffer assembly is located between the first stern end and the bottom plate. This invention, through the cooperation of the inclined fender plate and the roller assembly, converts the tangential sliding friction of the contact surface into rolling friction during berthing, significantly reducing frictional resistance and impact. The buffer assembly provides flexible support, achieving yielding buffering and automatic reset, effectively solving the problems of high friction, poor multi-directional adaptability, and limited space in traditional fenders. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the first structure of the roller fender described in the specific embodiment;

[0020] Figure 2 This is a schematic diagram of the second structure of the roller fender described in the specific embodiment;

[0021] Figure 3 This is a schematic diagram of the third structure of the roller fender described in the specific implementation method;

[0022] Figure 4 This is a top view of the roller fender structure described in the specific implementation.

[0023] The reference numerals for the above figures are as follows:

[0024] 1. Base plate;

[0025] 2. Protective panels;

[0026] 21. Mounting holes;

[0027] 3. First connector;

[0028] 4. Second connector;

[0029] 41. First section of the rod;

[0030] 42. Second rod section;

[0031] 5. Roller assembly;

[0032] 51. Roller;

[0033] 52. Roller;

[0034] 6. Buffer group;

[0035] 61. First limit block;

[0036] 62. Second limit block;

[0037] 63. Elastic components;

[0038] 64. Telescopic pole;

[0039] 7. First hinge seat;

[0040] 8. Second hinge seat;

[0041] 9. Third hinge seat. Detailed Implementation

[0042] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be particularly noted that the following embodiments are only for illustrating the present invention and do not limit the scope of the present invention. Similarly, the following embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0043] Please see Figures 1 to 4 This embodiment provides a multi-directional roller fender on the bow side of an unmanned surface vessel (USV), applicable to USVs. The USV has a bow side, and the roller fender includes a bottom plate 1, a guard plate 2, a first connector 3, a second connector 4, a roller assembly 5, and a buffer assembly 6. The bottom plate 1 is disposed on the bow side; the guard plate 2 includes a first bow end and a first stern end, and the guard plate 2 is inclined to the bottom plate 1; the first connector 3 is disposed between the first bow end and the bottom plate 1; the second connector 4 is disposed between the first stern end and the bottom plate 1; the roller assembly 5 is disposed on the guard plate 2, and the roller assembly 5 includes multiple rollers 51, each roller 51 at least partially protruding from the guard plate 2 and facing outward; the buffer assembly 6 is disposed between the first stern end and the bottom plate 1.

[0044] In this embodiment, the bottom plate 1 serves as a mounting base fixed to the bow side, providing stable support for the entire fender structure. The fender 2 is connected to the bottom plate 1 via a first bow end and a first stern end, forming an inclined contact plane that guides the reasonable transmission of contact force during berthing. A first connector 3 is disposed between the first bow end and the bottom plate 1, enabling a hinged connection at the bow end of the fender 2, allowing the fender 2 to rotate within a certain angle range. A second connector 4 is disposed between the first stern end and the bottom plate 1, forming a double-support structure for the fender 2 together with the first connector 3, ensuring the stability of the fender 2's movement.

[0045] Roller assembly 5 comprises multiple independent rollers 51, which partially protrude from the surface of the guard plate 2. When the guard plate 2 comes into contact with an external object, they convert sliding friction into rolling friction. Buffer assembly 6 is located between the first stern end and the bottom plate 1, providing flexible cushioning when the guard plate 2 is impacted and assisting the guard plate 2 in returning to its initial position after the impact is eliminated. Preferably, the guard plate 2 can adopt an arc-shaped curved surface design to better adapt to the bow profile; the rollers 51 can be made of seawater-resistant engineering plastics or rubber-coated materials, ensuring smooth rolling while avoiding damage to the contact surface.

[0046] During operation, when the bow of the unmanned vessel comes into contact with a dock, other vessels, or guidance facilities, the external force first acts on the roller assembly 5 on the fender 2. The rollers 51 then begin to roll, converting sliding friction into low-resistance rolling friction. Simultaneously, the impact force is transmitted through the fender 2 to the first connector 3 and the second connector 4, causing the fender 2 to rotate slightly around the connection point. At this time, the buffer assembly 6 undergoes elastic deformation to absorb the impact energy. When the external force is removed, the elastic potential energy stored in the buffer assembly 6 is released, pushing the fender 2 smoothly back to its initial tilted position. This working mechanism allows the fender to effectively buffer impacts during berthing and significantly reduce frictional resistance through the roller assembly 5, avoiding the jamming and wear problems common in traditional fenders. This structure is particularly suitable for installation on the bow side of ships with limited space, achieving multi-directional protection functions through a simple mechanical structure, and has the advantages of high reliability and easy maintenance.

[0047] In some embodiments, the base plate 1 includes a second head end; a first connector 3 is disposed on the second head end; the roller fender also includes a first hinge seat 7, which is disposed on the lower surface of the first head end and is hinged to the first connector 3.

[0048] In this embodiment, the second proximal end of the base plate 1 can be understood as the installation area near the bow, used to set the installation interface of the first connector 3. The first connector 3 is fixedly connected to the base plate 1 through the second proximal end, used to transmit the load of the first proximal end of the guard plate 2. The first hinge seat 7 is disposed on the lower surface of the first proximal end, serving as a transition connection structure between the guard plate 2 and the first connector 3. It has a pin hole inside, which cooperates with the corresponding structure on the upper end of the first connector 3 to achieve a hinge connection, allowing the guard plate 2 to rotate at a certain angle around the first connector 3 as the axis, while maintaining connection stability when subjected to impact.

[0049] Preferably, the first hinge seat 7 can adopt a structure with a self-lubricating bushing to reduce rotational friction and prevent corrosion and jamming in the marine environment; a reinforcing rib can be provided at the connection between the first connector 3 and the base plate 1 to improve the local structural strength.

[0050] This embodiment achieves a reliable hinge between the first end of the fender 2 and the second end of the bottom plate 1 by setting a dedicated first hinge seat 7 between the first connecting member 3 and the fender 2. When the fender is subjected to external impact, the fender 2 can adaptively rotate around the first connecting member 3 as the axis. At the same time, the guiding effect of the first hinge seat 7 ensures the stability of the rotation trajectory, so that the fender 2 can maintain smooth movement when subjected to multi-directional loads, avoiding the stress concentration problem that is prone to occur in traditional fixed connections. In particular, the layout of the first hinge seat 7 on the lower surface of the fender 2 not only ensures the strength of the hinge point, but also keeps the outer surface of the fender 2 flat, which is conducive to the uniform distribution and normal operation of the rollers 51. The hinge structure of this embodiment is simple and reliable, easy to install and maintain, and effectively improves the adaptability and service life of the fender device in complex sea conditions.

[0051] In some embodiments, the base plate 1 includes a second tail end, and the roller fender also includes a second hinge seat 8 and a third hinge seat 9. The second hinge seat 8 is disposed at the second tail end, and the second connector 4 is hinged to the second tail end through the second hinge seat 8; the third hinge seat 9 is disposed at the first tail end, and the second connector 4 is hinged to the first tail end through the third hinge seat 9.

[0052] In this embodiment, the second tail end of the base plate 1 serves as the support area for the tail of the guard plate 2, forming a double-end fixed structure of the guard plate 2 together with the second head end. A second hinge seat 8 is disposed on the second tail end, providing a hinge interface for the connection between the second connector 4 and the base plate 1, ensuring that the second connector 4 can rotate relative to the base plate 1. A third hinge seat 9 is disposed at a corresponding position on the first tail end, cooperating with the second hinge seat 8 to form a complete hinge link, enabling the second connector 4 to achieve a stable double-hinged connection between the first tail end of the guard plate 2 and the second tail end of the base plate 1.

[0053] The structure of the double hinge base allows the tail of the guard plate 2 to achieve flexible displacement through the rotation of the second connector 4 when subjected to impact, while maintaining connection reliability. Preferably, the second hinge base 8 and the third hinge base 9 can adopt the same structural specifications to simplify the manufacturing and assembly process; wear-resistant bushings can be installed inside the hinge bases to extend their service life.

[0054] This embodiment achieves a double-hinged connection between the first tail end of the fender 2 and the second tail end of the bottom plate 1 by setting a second hinge seat 8 and a third hinge seat 9. When the fender is subjected to external impact, the tail end of the fender 2 can achieve flexible displacement through the rotation of the second connecting member 4. At the same time, the double-hinged seat structure ensures the stability and reliability of the connection point, allowing the fender 2 to evenly distribute stress when subjected to impact loads, avoiding the stress concentration problem that is prone to occur with single-point connections. The layout of the second hinge seat 8 at the second tail end of the bottom plate 1 and the third hinge seat 9 at the first tail end of the fender 2 forms a complete force transmission path, ensuring both the flexibility of the fender 2's movement and the stability of the overall structure. The hinge structure of this embodiment can effectively adapt to the complex movement state of the fender 2 during impact, improving the service life and reliability of the fender device.

[0055] In some embodiments, the second connector 4 includes a first rod portion 41 and a second rod portion 42, the first rod portion 41 and the second rod portion 42 are hinged together, the first rod portion 41 is hinged to a first tail end, and the second rod portion 42 is hinged to a second tail end.

[0056] In this embodiment, the second connecting member 4 adopts a segmented design, consisting of a first rod 41 and a second rod 42. The first rod 41 is hinged to the first tail end of the guard plate 2 to transfer the load of the guard plate 2 to the second connecting member 4; the second rod 42 is hinged to the second tail end of the base plate 1 to achieve a reliable connection with the base plate 1. The first rod 41 and the second rod 42 are also hinged to form a three-segment hinged structure, giving the second connecting member 4 a certain degree of angle adjustment capability.

[0057] This segmented hinged design allows the second connector 4 to better adapt to the complex displacement of the guard plate 2 during impact, while maintaining a stable force transmission path. Preferably, the first rod 41 and the second rod 42 can be designed with equal strength to ensure that the deformation of each rod segment is coordinated and consistent when subjected to impact; the hinge point can be equipped with an anti-loosening structure to prevent the connection from loosening under long-term vibration.

[0058] This embodiment significantly improves the adaptability of the fender device by designing the second connector 4 as a segmented hinged structure of the first rod 41 and the second rod 42. When the fender 2 is displaced by external impact, the segmented hinged second connector 4 can effectively absorb and buffer the impact energy through the relative rotation of each hinge point, while maintaining a stable connection between the fender 2 and the bottom plate 1. This is particularly suitable for situations where space is limited and stress is complex on the bow side of the ship, effectively avoiding stress concentration and structural interference problems that are prone to occur with traditional rigid connections. The three-segment hinged structure of this embodiment gives the fender 2 greater freedom of movement during impact, ensuring both the protective effect and improving the service life and reliability of the device.

[0059] In some embodiments, the number of second connectors 4 is two, and the buffer group 6 is disposed between the two second connectors 4.

[0060] In this embodiment, the second connectors 4 are arranged symmetrically, with two connectors located on either side of the first tail end of the guard plate 2. This effectively distributes the load transmitted by the guard plate 2, preventing excessive stress at a single point. The buffer group 6 is positioned within the space between the two second connectors 4, making full use of the structural gaps. This achieves a compact layout while ensuring the proper functioning of the buffer. The two second connectors 4 and the intermediate buffer group 6 together form a stable triangular support structure, significantly improving the overall rigidity and stability of the tail end of the guard plate 2. Preferably, the two second connectors 4 can adopt the same structure and dimensions to simplify manufacturing and maintenance. The spacing between the connectors can be optimized according to the width of the guard plate 2 to ensure uniform stress distribution.

[0061] This embodiment forms a more stable and reliable support structure by setting two second connectors 4 and arranging a buffer group 6 between them. When the guard plate 2 is impacted, the two connectors can evenly distribute the load and avoid stress concentration. At the same time, the buffer group 6 in the middle provides effective energy absorption, which not only ensures the stability of the guard plate 2's movement, but also makes full use of the limited space, making it particularly suitable for the installation environment with compact space on the bow side of the ship.

[0062] In some embodiments, there are two buffer groups 6, arranged side by side between the second connectors 4.

[0063] In this embodiment, the buffer group 6 is arranged in a dual-group parallel configuration, with two groups positioned symmetrically between the two second connectors 4. This arrangement provides a larger buffer capacity and a more uniform force distribution. Each buffer group 6 works independently yet cooperates with the others, forming a redundant buffer system. The parallel arrangement further disperses the point of application of the buffer force, effectively avoiding the off-center loading problem that may occur with single-point buffering. Preferably, the two buffer groups 6 can use the same technical parameters and structural form to ensure balanced force distribution; alternatively, different stiffness combinations of buffer elements can be used to adapt to different impact energy absorption requirements, depending on actual needs.

[0064] This embodiment ensures balanced force distribution by setting two parallel buffer groups 6, avoiding tilting or jamming of the guard plate 2 caused by uneven loading. It is particularly suitable for working environments that bear large impact loads. When the guard plate 2 is impacted, the two buffer groups 6 can work simultaneously to absorb the impact energy together, providing a more stable and uniform buffering effect. This not only increases the buffering capacity but also improves the reliability of the system through redundant configuration. Even if one buffer group 6 malfunctions, the other can still maintain its basic function.

[0065] In some embodiments, the buffer group 6 includes a first limiting block 61, a second limiting block 62, and an elastic member 63. The first limiting block 61 is disposed on the base plate 1; the second limiting block 62 is disposed on the guard plate 2; and the elastic member 63 is disposed between the first limiting block 61 and the second limiting block 62.

[0066] In this embodiment, the first limiting block 61 is fixedly mounted on the base plate 1, serving as the fixed end of the buffer group 6 and providing a stable mounting foundation for the entire buffer system; the second limiting block 62 is mounted on the guard plate 2 and moves with the guard plate 2, serving as the movable end of the buffer group 6; the elastic element 63 is disposed between the first limiting block 61 and the second limiting block 62, absorbing and releasing impact energy through its elastic deformation. This three-component combination structure enables the buffer group 6 to effectively isolate the direct rigid contact between the guard plate 2 and the base plate 1, while achieving flexible buffering through the deformation of the elastic element 63.

[0067] Preferably, the first limiting block 61 and the second limiting block 62 can adopt a structure with guide grooves to ensure that the elastic element 63 remains stably aligned during compression; the elastic element 63 can be selected from different forms such as helical springs, rubber blocks or gas-liquid dampers according to actual needs.

[0068] This embodiment, through the coordinated action of the first limiting block 61, the second limiting block 62, and the elastic element 63, ensures an effective transmission path for the buffering force, making the buffering effect more direct and reliable, and adaptable to impact conditions of varying intensities. When the guard plate 2 is subjected to an external impact, the second limiting block 62 moves with the guard plate 2, compressing the elastic element 63 in the middle. The impact energy is absorbed by the elastic element 63 and converted into elastic potential energy. When the impact is eliminated, the elastic element 63 releases the stored energy, pushing the guard plate 2 back to its initial position. This buffering mechanism not only effectively reduces the peak impact load but also avoids rigid collisions between the guard plate 2 and the base plate 1, significantly improving the durability of the device.

[0069] In some embodiments, the buffer group 6 further includes a telescopic rod 64, which is disposed between the first limiting block 61 and the second limiting block 62, and an elastic element 63 is sleeved around the telescopic rod 64.

[0070] In this embodiment, the buffer assembly 6 is supplemented with a telescopic rod 64 based on the original structure. The telescopic rod 64 is positioned between the first limiting block 61 and the second limiting block 62, providing reliable guidance and support for the elastic element 63. The elastic element 63 is sleeved around the telescopic rod 64, forming a coaxial arrangement with the telescopic rod 64. The telescopic rod 64 not only guides the compression and rebound direction of the elastic element 63, but also bears part of the lateral load, preventing the elastic element 63 from bending or shifting during the stress process. This coaxial arrangement ensures that the buffer assembly 6 maintains a stable movement trajectory during operation. Preferably, the telescopic rod 64 can adopt a multi-section sleeve structure, with sliding bearings between each section to reduce frictional resistance; the end of the telescopic rod 64 can be provided with an anti-detachment structure to prevent detachment at the maximum compression position.

[0071] This embodiment, by adding a telescopic rod 64 and coaxially arranging it with the elastic element 63, ensures that the buffer assembly 6 maintains a stable buffering effect under complex stress conditions, thus improving the overall performance of the fender device. When the fender 2 is impacted, the telescopic rod 64 provides precise guidance for the compression and rebound of the elastic element 63, ensuring that the buffering force always acts in the predetermined direction, avoiding bending deformation or jamming of the elastic element 63 due to off-center loading. This guiding structure is particularly suitable for working conditions subjected to multi-directional composite loads, effectively maintaining the stability of the buffering performance. At the same time, the telescopic rod 64 also shares part of the lateral load, reducing the burden on the elastic element 63 and extending the service life of the buffer assembly 6.

[0072] In some embodiments, the guard plate 2 has a plurality of mounting holes 21, which are distributed in a preset manner. Each mounting hole 21 is equipped with a roller assembly 5. The roller assembly 5 also includes a roller 52, which is disposed in the mounting hole 21, and the roller 51 is sleeved on the roller 52.

[0073] In this embodiment, the preset arrangement can include various forms such as uniform matrix arrangement, staggered arrangement, or zoned density arrangement according to the force characteristics. Each mounting hole 21 houses a complete roller assembly 5, which includes not only rollers 51 but also a key component, a roller shaft 52. The roller shaft 52 is fixedly installed within the mounting hole 21, providing rotational support for the rollers 51. The rollers 51 are fitted around the roller shaft 52, allowing them to rotate freely around it. This split structure facilitates the individual replacement and maintenance of the rollers 51. Preferably, bearings or bushings can be installed within the mounting hole 21 to reduce friction between the roller shaft 52 and the guard plate 2; anti-detachment retaining rings can be installed at both ends of the roller shaft 52 to ensure that the rollers 51 do not detach during high-speed rotation.

[0074] This embodiment, through the provision of specialized mounting holes 21 and roller 52, not only improves the performance of the fender device but also reduces maintenance costs, making it particularly suitable for long-term use in harsh marine environments. When the fender 2 comes into contact with an external object, the roller 51 rotates smoothly on the roller 52, converting sliding friction into rolling friction, significantly reducing frictional resistance and wear. The pre-designed mounting holes 21 ensure the uniformity and rationality of the roller 51's coverage, enabling the fender 2 to provide effective rolling friction reduction at different contact points. The roller 52 serves as a rotational support for the roller 51, ensuring the stability and durability of the roller 51's movement, while also facilitating the maintenance and replacement of individual rollers 51.

[0075] In some embodiments, the number of first connectors 3 is three; the three first connectors 3 are arranged side by side between the base plate 1 and the guard plate 2.

[0076] In this embodiment, the first connectors 3 are arranged in multiple parallel groups, with a quantity of three. These first connectors 3 are evenly distributed along the width direction of the protective plate 2 between the base plate 1 and the protective plate 2. The three first connectors 3 jointly undertake the function of supporting and transferring load at the head end of the protective plate 2, forming a multi-point support structure, which can effectively distribute the load transferred by the protective plate 2 and improve the redundancy and reliability of the connection system. Preferably, the three first connectors 3 can adopt the same structure and installation method to ensure uniform stress distribution; the spacing between the connectors can be optimized according to the width of the protective plate 2 and the stress characteristics.

[0077] This embodiment significantly enhances the connection strength and stability between the forehead of the fender 2 and the bottom plate 1 by setting three parallel first connecting members 3. When the fender 2 is subjected to impact, the three connecting members share the load, effectively avoiding stress concentration caused by excessive force at a single point. The multi-point support structure ensures the stability of the fender 2 during movement, preventing deformation or vibration caused by insufficient support. It is particularly suitable for the support requirements of wide fender 2, can adapt to impact conditions of different intensities, and improves the overall reliability and service life of the fender device.

[0078] By adopting the above technical solutions, this utility model differs from existing technologies and has the following beneficial effects: When the bow side of the unmanned vessel comes into contact with the dock or other ships, the roller group 5 on the guard plate 2 transforms the traditional sliding friction into low-resistance rolling friction, significantly reducing frictional resistance and surface wear; at the same time, the guard plate 2 forms a stable hinged support with the bottom plate 1 through the first connecting member 3 and the second connecting member 4, generating controllable displacement under impact, which, together with the elastic deformation of the buffer group 6, effectively absorbs the impact energy. After the impact is eliminated, the energy stored in the buffer group 6 pushes the guard plate 2 to smoothly reset, completing a complete yielding-buffering-return cycle.

[0079] This technical solution achieves effective protection during multi-directional contact through the synergistic effect of the inclined guard plate 2 and the multi-roller assembly 5; the segmented hinged second connector 4 and the double buffer assembly 6 enhance the adaptability and reliability of the device; and the multi-point supported first connector 3 ensures connection stability. The overall structure is compact and reasonable, particularly suitable for installation in the limited space on the bow side of a ship. While ensuring the protective effect, it significantly reduces friction loss and impact load, improving the safety of unmanned surface vessel berthing operations and the service life of the device.

[0080] The above description is only a part of the embodiments of this utility model, and does not limit the scope of protection of this utility model. Any equivalent device or equivalent process transformation made based on the content of this utility model specification and drawings, or direct or indirect application in other related technical fields, are similarly included in the patent protection scope of this utility model.

Claims

1. A multi-directional roller fender for a bow of an unmanned ship, characterized by, The application relates to a roller fender suitable for an unmanned ship, the unmanned ship having a bow side, the roller fender comprising: a bottom plate arranged on the bow side; a fender plate comprising a first head end and a first tail end, the fender plate being arranged obliquely with the bottom plate; a first connecting piece arranged between the first head end and the bottom plate; a second connecting piece arranged between the first tail end and the bottom plate; a roller set arranged on the fender plate, the roller set comprising a plurality of rollers, each of the rollers at least partially protruding out of the fender plate and facing outward; a buffer set arranged between the first tail end and the bottom plate.

2. The multi-directional roller fender of claim 1, wherein, The bottom plate comprises a second head end; the first connecting piece is arranged on the second head end; the roller fender further comprises: a first hinge seat arranged on the lower surface of the first head end, the first hinge seat being hinged with the first connecting piece.

3. The multi-directional roller fender of claim 1, wherein, The bottom plate comprises a second tail end, and the roller fender further comprises: a second hinge seat arranged on the second tail end, the second connecting piece being hinged with the second tail end through the second hinge seat; a third hinge seat arranged on the first tail end, the second connecting piece being hinged with the first tail end through the third hinge seat.

4. The multi-directional roller fender of claim 3, wherein, The second connecting piece comprises a first rod part and a second rod part, the first rod part being hinged with the second rod part, the first rod part being hinged with the first tail end, and the second rod part being hinged with the second tail end.

5. The multi-directional roller fender of claim 4, wherein, The number of the second connecting pieces is two, and the buffer set is arranged between the two second connecting pieces.

6. The multi-directional roller fender of claim 5, wherein, The number of the buffer sets is two, and the two buffer sets are arranged side by side between the second connecting pieces.

7. The multi-directional roller fender of claim 1, wherein, The buffer set comprises: a first limiting block arranged on the bottom plate; a second limiting block arranged on the fender plate; an elastic piece arranged between the first limiting block and the second limiting block.

8. The multi-directional roller fender of claim 7, wherein, The buffer set further comprises: a telescopic rod arranged between the first limiting block and the second limiting block, and the elastic piece being sleeved on the periphery of the telescopic rod.

9. The multi-directional roller fender of claim 1, wherein, A plurality of mounting holes are arranged on the fender plate, the mounting holes are distributed in a preset mode, and each of the mounting holes is provided with one roller set; The roller set further comprises: a roller shaft arranged in the mounting hole, and the roller being sleeved on the roller shaft.

10. The multi-directional roller fender of claim 1, wherein, The number of the first connecting pieces is three; the three first connecting pieces are arranged side by side between the bottom plate and the fender plate.

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