Channel structure for ship

Abstract

The utility model relates to a channel structure for a ship. The channel structure comprises a first fixed platform, a second fixed platform and an overturning platform, the first fixing platform is used for being connected with a working area of a ship. The second fixed platform is used for being connected with a living area of the ship; the overturning platform is arranged between the first fixed platform and the second fixed platform, the overturning platform is hinged to the second fixed platform, so that the overturning platform can be far away from or close to the first fixed platform, a rubber pad is arranged at the end, far away from the second fixed platform, of the overturning platform, and the rubber pad is used for being in lap joint with the first fixed platform. When the channel structure is in a non-passing state, noise and vibration of a working area can be physically isolated, when the channel structure is in a passing state, the overturning platform and the first fixing platform are in lap joint through a rubber pad, the rubber pad effectively weakens vibration propagation when the channel structure is used, the passing transportation requirement can be effectively met, and the working efficiency is improved. And vibration noise can be isolated when the channel is used or not used.

Description

Technical Field

[0001] The utility model relates to the field of ship equipment, in particular to a ship channel structure. Background Art

[0002] With the improvement of people's living standards, in the surface ship transportation industry, whether it is passenger ships, cargo ships or operating ships, higher requirements are constantly being put forward for the comfort of surface ships. Especially for operating ships, there are many operating equipment on the ship, and the strong vibration and noise generated during work will cause extreme discomfort to the personnel on board, especially the long-term exposure of the crew to a high vibration and noise environment, which will have a serious impact on their physiological and mental health. Therefore, the demand for vibration and noise reduction technology is increasing day by day, especially how to reduce the vibration and noise in the living area of ​​the ship is very important.

[0003] Most projects will isolate the main and significant vibration and noise sources from the living area during the design process. This can most effectively control the indirect transmission of vibration and noise, and minimize the impact of vibration and noise on living quarters and living quarters. However, this simple physical separation has a restrictive impact on the repair and maintenance of equipment, the safe guidance and evacuation of personnel, etc. For example, in conventional offshore projects, the living building and the engine room shed are two independent and adjacent groups of premises. Usually, a passage is set up to connect the living building and the engine room shed to facilitate the repair and maintenance of the relevant premises and equipment in the engine room shed, and as a rapid guidance and evacuation passage for the staff in the engine room shed. For another example, in FLNG projects, the owner usually requires a personnel passage to connect the upper module with the living quarters to facilitate the daily passage of the staff and the emergency evacuation in emergency situations. If a structural connection channel is directly set up, the two groups of places will be connected into a whole, and vibration and noise will be transmitted to each other. That is, the vibration and noise generated by the vibration source and noise source (cabin, upper module) will be transmitted to the living place (living building), which will also lose the original intention of physically separating the two groups of places.

[0004] Therefore, it is necessary to design a structure that can effectively isolate the propagation of vibration and noise between the workplace and the living place, and facilitate the transportation and passage of workers. Utility Model Content

[0005] The purpose of the utility model is to overcome the defects of the prior art and provide a ship passage structure which can effectively isolate noise while facilitating transportation.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A marine passage structure, comprising:

[0008] a first fixed platform, the first fixed platform being used to connect to a working area of ​​the vessel;

[0009] a second fixed platform, the second fixed platform being used to connect to the living area of ​​the ship;

[0010] A flipping platform, wherein the flipping platform is arranged between the first fixed platform and the second fixed platform, and the flipping platform is hinged to the second fixed platform so that the flipping platform can move away from or approach the first fixed platform, and a rubber pad is provided on the end of the flipping platform away from the second fixed platform, and the rubber pad is used to overlap with the first fixed platform.

[0011] In one embodiment, fixed side panels are provided on both sides of the second fixed platform, and flip side panels are provided on both sides of the flip platform. Part of the flip side panel is stacked with part of the fixed side panel, and an axis is passed through the stacked part of the flip side panel and the fixed side panel, so that the flip side panel can rotate around the center line of the axis.

[0012] In one embodiment, the flip side plate is provided with a first rotation hole, the fixed side plate is provided with a second rotation hole, the shaft member includes a bolt and a nut, and the bolt passes through the first rotation hole and the second rotation hole in sequence and is connected to the nut.

[0013] In one embodiment, a lifting rope is provided between the second fixed platform and the flip platform, a mounting hook is provided on the second fixed platform, a mounting hole is provided on the flip side panel, one end of the lifting rope is connected to the mounting hook, and the other end of the lifting rope is connected to the mounting hole.

[0014] In one embodiment, a fixed limit portion is provided at the bottom of the second fixed platform, and a flip limit portion is provided at the bottom of the flip platform. When the rubber pad overlaps the first fixed platform, the flip limit portion abuts against the fixed limit portion to limit the rotation of the flip platform.

[0015] In one embodiment, first fixed guardrails are provided on both sides of the first fixed platform, second fixed guardrails are provided on both sides of the second fixed platform, and the mounting hook is provided on the second fixed guardrail.

[0016] In one embodiment, the first fixed guardrail includes a plurality of first cross bars sequentially arranged along the height direction, and the second fixed guardrail includes a plurality of second cross bars sequentially arranged along the height direction.

[0017] In one embodiment, the second fixed guardrail is extended in a direction close to the first fixed guardrail to provide a rollover protection portion;

[0018] And / or, turning guardrails are provided on both sides of the turning platform.

[0019] In one embodiment, a first protection chain is provided between two of the first fixed guardrails, and the first protection chain is detachably connected to the first fixed guardrails; a second protection chain is provided between two of the second fixed guardrails, and the second protection chain is detachably connected to the second fixed guardrails.

[0020] In one embodiment, a first hook is provided on the first fixed guardrail, and two ends of the first protection chain are respectively hung on the first hook; a second hook is provided on the second fixed guardrail, and two ends of the second protection chain are respectively hung on the second hook.

[0021] Compared with the prior art, the utility model has the following advantages:

[0022] 1. The above-mentioned marine channel structure forms a complete channel structure by overlapping the rubber pads on the first fixed platform and the flip platform, and connecting the flip platform and the second fixed platform, which is used to connect the living area and the working area of ​​the ship to facilitate passage and transportation; since the flip platform is hinged with the second fixed platform, when the channel structure is needed, the flip platform can be rotated to dock with the first fixed platform, and the channel structure is in a passable state at this time; when passage is not required, the flip platform can be rotated to be away from the first fixed platform, and the channel structure is in a non-passable state; it can be seen that when the channel structure is in a non-passable state, the flip platform and the first fixed platform are not connected, which can physically isolate the noise and vibration of the working area. Even if the channel structure is in a passable state, the flip platform and the first fixed platform are not directly overlapped, but overlapped by rubber pads. The rubber pads effectively reduce the vibration propagation of the channel structure when it is in use. Therefore, the channel structure can not only effectively meet the passage and transportation needs, but also isolate vibration noise when the channel is in use or not.

[0023] 2. The fixed side panels on both sides of the second fixed platform and the flipping side panels on both sides of the flipping platform can not only enhance the strength and load-bearing capacity of the second fixed platform and the flipping platform, but can also be used to connect the second fixed platform and the flipping platform. By connecting the stacked parts of the fixed side panels and the flipping side panels with bolts and nuts, hinges can be achieved so that the flipping platform can rotate around the bolts. The structure is simple and easy to disassemble and install.

[0024] 3. When the flipping platform is rotated to overlap the first fixed platform with the flipping platform, the lifting rope is used to fix the rotation angle between the flipping platform and the second fixed platform. At the same time, the flipping limit part and the fixed limit part further limit the angle between the flipping platform and the second fixed platform through abutment, and improve the load-bearing capacity of the flipping platform.

[0025] 4. Since the passage structure is generally suspended, the first fixed guardrail and the second fixed guardrail can protect both sides of the first fixed platform and the second fixed platform, effectively preventing people or objects from falling, and ensuring the safety and efficiency of passage. At the same time, multiple first cross bars and second cross bars along the height direction are set on the first fixed guardrail and the second fixed guardrail, which is convenient for comprehensive protection in the height direction, preventing small height objects from falling, and improving the protection effect.

[0026] 5. Extend the second fixed guardrail to form a rollover protection part or directly set a rollover guardrail on the rollover platform to protect both sides of the rollover platform and improve the safety of the rollover platform.

[0027] 6. The detachable first protection chain and the second protection chain are used to protect the first fixed platform and the second fixed platform when the channel structure is not in use, that is, when the flip platform is not connected to the first fixed platform, to prevent staff from stepping into the gap between the first fixed platform and the second fixed platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a front view of a marine passage structure in one embodiment.

[0029] Figure 2 for Figure 1 Schematic diagram of part of the structure of the channel structure used in ships.

[0030] Figure 3 It is a top view of a marine passage structure in one embodiment.

[0031] Figure 4 It is a front view of a marine passage structure (in passage state) in another embodiment.

[0032] Figure 5 It is a front view of a marine passage structure (in a non-trafficable state) in another embodiment.

[0033] Figure 6 It is a top view of the marine passage structure (passage state) in another embodiment.

[0034] 1. The first fixed platform; 2. The first fixed guardrail; 3. The first crossbar; 4. The first protective chain; 5. The fixed reinforcing rib; 6. The reinforcing side plate; 7. The first hook; 8. The second fixed platform; 9. The fixed side plate; 10. The second rotating hole; 11. The mounting hook; 12. The second fixed guardrail; 13. The first crossbar; 14. The first protective chain; 15. The first hook; 16. The second fixed platform; 17. The fixed side plate; 18. The second rotating hole; 19. The second rotating hole; 20. The second fixed platform; 21. The fixed side plate; 22. The second rotating hole; 23. The mounting hook; 24. The fixed limiting part; 25. The second fixed guardrail; 251. The second crossbar; 252. The flipping protective part; 26. The second protective chain; 27. The second hook; 30. The flipping platform; 31. The flipping side plate; 32. The bolt; 33. The nut; 34. The first rotating hole; 35. The mounting hole; 36. The flip limiting part; 37. The flip guardrail; 38. The flip reinforcing rib; 40. The rubber pad; 50. The lifting rope. DETAILED DESCRIPTION

[0035] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and a specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0036] A marine passage structure 100 according to an embodiment is described in detail below with reference to the accompanying drawings.

[0037] like Figures 1 to 6 In one embodiment, a ship passage structure 100 is provided, comprising a first fixed platform 10, a second fixed platform 20 and a turnover platform 30;

[0038] Among them, the first fixed platform 10 is used to connect with the working area of ​​the ship; the second fixed platform 20 is used to connect with the living area of ​​the ship; the flip platform 30 is arranged between the first fixed platform 10 and the second fixed platform 20, and the flip platform 30 is hinged to the second fixed platform 20, so that the flip platform 30 can move away from or approach the first fixed platform 10, and a rubber pad 40 is provided on the end of the flip platform 30 away from the second fixed platform 20, and the rubber pad 40 is used to overlap with the first fixed platform 10.

[0039] The above-mentioned marine channel structure 100 forms a complete channel structure by overlapping the rubber pad 40 on the first fixed platform 10 and the flip platform 30, and connecting the flip platform 30 with the second fixed platform 20, which is used to connect the living area and the working area of ​​the ship, and is convenient for passage and transportation; because the flip platform 30 is hinged with the second fixed platform 20, when the channel structure is needed, the flip platform 30 can be rotated to dock with the first fixed platform 10, and the channel structure is in a passable state. When passage is not required, the flip platform 30 can be rotated to be away from the first fixed platform 10, and the channel structure is in a non-passable state; it can be seen that when the channel structure is in a non-passable state, the flip platform 30 and the first fixed platform 10 are not connected, which can physically isolate the noise and vibration of the working area. Even if the channel structure is in a passable state, the flip platform 30 and the first fixed platform 10 are not directly overlapped, but overlapped by the rubber pad 40. The rubber pad 40 effectively weakens the vibration propagation of the channel structure when it is used. Therefore, the channel structure can not only effectively meet the passage and transportation needs, but also isolate vibration noise when the channel is used or not.

[0040] Specifically, Figure 1 and Figure 3 As shown, in one embodiment, fixed side panels 21 are provided on both sides of the second fixed platform 20, and flip side panels 31 are provided on both sides of the flip platform 30. Part of the flip side panel 31 is stacked with part of the fixed side panel 21, and an axis is passed through the stacked part of the flip side panel 31 and the fixed side panel 21, so that the flip side panel 31 rotates around the center line of the axis.

[0041] Furthermore, if Figure 2 and Figure 3 As shown, in one embodiment, a first rotation hole 34 is provided on the flip side plate 31, a second rotation hole 22 is provided on the fixed side plate 21, and the shaft member includes a bolt 32 and a nut 33, and the bolt 32 passes through the first rotation hole 34 and the second rotation hole 22 in sequence and is connected to the nut 33.

[0042] In this specific embodiment, reinforcing side panels 14 may also be provided on both sides of the first fixed platform 10 to improve the load-bearing capacity and installation convenience of the first fixed platform 10 .

[0043] The fixed side panels 21 on both sides of the second fixed platform 20 and the flipping side panels 31 on both sides of the flipping platform 30 can not only enhance the strength and load-bearing capacity of the second fixed platform 20 and the flipping platform 30, but can also be used to connect the second fixed platform 20 and the flipping platform 30. By connecting the stacked parts of the fixed side panels 21 and the flipping side panels 31 with bolts 32 and nuts 33, hinged connection can be achieved, so that the flipping platform 30 can rotate around the bolts 32. The structure is simple and easy to disassemble and install.

[0044] Specifically, Figure 2 and Figure 4 As shown, in one embodiment, a lifting rope 50 is provided between the second fixed platform 20 and the flip platform 30, a mounting hook 23 is provided on the second fixed platform 20, a mounting hole 35 is provided on the flip side panel 31, one end of the lifting rope 50 is connected to the mounting hook 23, and the other end of the lifting rope 50 is connected to the mounting hole 35.

[0045] Specifically, Figure 1 and Figure 2 As shown, in one embodiment, a fixed limit portion 24 is provided at the bottom of the second fixed platform 20, and a flip limit portion 36 is provided at the bottom of the flip platform 30. When the rubber pad 40 overlaps the first fixed platform 10, the flip limit portion 36 abuts against the fixed limit portion 24 to limit the rotation of the flip platform 30.

[0046] Furthermore, a fixed reinforcing rib 13 is provided at the bottom of the first fixed platform 10, and a flip reinforcing rib 38 is provided at the bottom of the flip platform 30, and the fixed reinforcing rib 13 and the flip reinforcing rib 38 are arranged opposite to each other. Among them, the fixed limit portion 24, the flip limit portion 36, the fixed reinforcing rib 13 and the flip reinforcing rib 38 can all be arranged with angle steel.

[0047] When the flipping platform 30 is rotated to overlap the first fixed platform 10 with the flipping platform 30, the suspension rope 50 is used to fix the rotation angle between the flipping platform 30 and the second fixed platform 20. At the same time, the flipping limit part 36 and the fixed limit part 24 further limit the angle between the flipping platform 30 and the second fixed platform 20 through abutment, and improve the load-bearing capacity of the flipping platform 30.

[0048] Specifically, Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, in one embodiment, first fixed guardrails 11 are provided on both sides of the first fixed platform 10 , second fixed guardrails 25 are provided on both sides of the second fixed platform 20 , and the mounting hooks 23 are provided on the second fixed guardrails 25 .

[0049] Furthermore, if Figure 1 and Figure 2 As shown, in one embodiment, the first fixed guardrail 11 includes a plurality of first crossbars 111 sequentially arranged along the height direction, and the second fixed guardrail 25 includes a plurality of second crossbars 251 sequentially arranged along the height direction.

[0050] Since the passage structure is generally suspended, the first fixed guardrail 11 and the second fixed guardrail 25 can protect both sides of the first fixed platform 10 and the second fixed platform 20, effectively preventing people or objects from falling, and ensuring the safety and efficiency of passage. At the same time, the first fixed guardrail 11 and the second fixed guardrail 25 are provided with a plurality of first cross bars 111 and second cross bars 251 along the height direction, so as to provide comprehensive protection in the height direction, prevent small height objects from falling, and improve the protection effect.

[0051] In this specific embodiment, three first cross bars 111 and three second cross bars 251 are provided, and the height distance between two adjacent first cross bars 111 is equal, and the height distance between two adjacent second cross bars 251 is also equal.

[0052] Furthermore, if Figure 1 and Figure 2 As shown, in one embodiment, the second fixed guardrail 25 extends toward the direction close to the first fixed guardrail 11 to form a rollover protection portion 252. The rollover protection portion 252 may also be provided with a plurality of cross bars arranged along the height direction, or the second cross bar 251 extends toward the direction close to the first fixed guardrail 11 to form a plurality of rollover protection portions 252.

[0053] Alternatively, if Figure 4 and Figure 5 As shown, in one embodiment, a rollover guardrail 37 is provided on both sides of the rollover platform 30. The rollover guardrail 37 can be provided with a plurality of rollover cross bars along the height direction. Preferably, the rollover cross bar is provided with three cross bars with the same spacing. The second fixed guardrail 25 is extended to form a rollover protection part 252 or the rollover guardrail 37 is directly provided on the rollover platform 30 to protect both sides of the rollover platform 30 and improve the traffic safety of the rollover platform 30.

[0054] Specifically, Figure 6 As shown, in one embodiment, a first protection chain 12 is provided between the two first fixed guardrails 11, and the first protection chain 12 is detachably connected to the first fixed guardrails 11, and a second protection chain 26 is provided between the two second fixed guardrails 25, and the second protection chain 26 is detachably connected to the second fixed guardrails 25. The detachably arranged first protection chain 12 and second protection chain 26 are used to protect the first fixed platform 10 and the second fixed platform 20 when the channel structure is not in use, that is, when the flip platform 30 is not connected to the first fixed platform 10, to prevent the staff from stepping into the gap between the first fixed platform 10 and the second fixed platform 20.

[0055] Furthermore, if Figure 6As shown, in one embodiment, a first hook 15 is provided on the first fixed guardrail 11, and both ends of the first protection chain 12 are respectively hung on the first hook 15; a second hook 27 is provided on the second fixed guardrail 25, and both ends of the second protection chain 26 are respectively hung on the second hook 27.

[0056] Furthermore, the first fixed guardrail 11 is provided with a first slide rail along the horizontal direction, and the first hook 15 slides with the first slide rail; the second fixed guardrail 25 is provided with a second slide rail along the horizontal direction, and the second hook 27 slides with the second slide rail, so as to adjust the horizontal position of the first hook 15 and the second hook 27, and further adjust the protection position of the first protection chain 12 and the second protection chain 26.

[0057] Optionally, three first protection chains 12 and three second protection chains 26 may be respectively provided along the height direction, and respectively provided on three first cross bars 111 and three second cross bars 251 , so as to increase the height range of protection.

[0058] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0059] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0060] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0062] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0063] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. A marine passage structure, characterized in that: include: A first fixed platform (10), the first fixed platform (10) being used to be connected to a working area of ​​a ship; A second fixed platform (20), the second fixed platform (20) being used to be connected to the living area of ​​the ship; A flipping platform (30), wherein the flipping platform (30) is arranged between the first fixed platform (10) and the second fixed platform (20), and the flipping platform (30) is hinged to the second fixed platform (20) so that the flipping platform (30) can move away from or approach the first fixed platform (10), and a rubber pad (40) is provided at one end of the flipping platform (30) away from the second fixed platform (20), and the rubber pad (40) is used to overlap with the first fixed platform (10).

2. A marine passage structure according to claim 1, characterized in that: Fixed side panels (21) are provided on both sides of the second fixed platform (20), and flip side panels (31) are provided on both sides of the flip platform (30). Parts of the flip side panels (31) are stacked with parts of the fixed side panels (21), and shafts are passed through the stacked parts of the flip side panels (31) and the fixed side panels (21), so that the flip side panels (31) rotate around the center line of the shafts.

3. A marine passage structure according to claim 2, characterized in that: The flip side plate (31) is provided with a first rotation hole (34), the fixed side plate (21) is provided with a second rotation hole (22), the shaft member comprises a bolt (32) and a nut (33), the bolt (32) sequentially passes through the first rotation hole (34), the second rotation hole (22) and is connected to the nut (33).

4. A marine passage structure according to claim 2, characterized in that: A hanging rope (50) is provided between the second fixed platform (20) and the flip platform (30), a mounting hook (23) is provided on the second fixed platform (20), a mounting hole (35) is provided on the flip side plate (31), one end of the hanging rope (50) is connected to the mounting hook (23), and the other end of the hanging rope (50) is connected to the mounting hole (35).

5. A marine passage structure according to claim 4, characterized in that: A fixed limiting portion (24) is provided at the bottom of the second fixed platform (20), and a flip limiting portion (36) is provided at the bottom of the flip platform (30); when the rubber pad (40) overlaps the first fixed platform (10), the flip limiting portion (36) abuts against the fixed limiting portion (24) to limit the rotation of the flip platform (30).

6. A marine passage structure according to claim 4, characterized in that: First fixed guardrails (11) are provided on both sides of the first fixed platform (10), second fixed guardrails (25) are provided on both sides of the second fixed platform (20), and the mounting hook (23) is provided on the second fixed guardrail (25).

7. A marine passage structure according to claim 6, characterized in that: The first fixed guardrail (11) comprises a plurality of first crossbars (111) arranged in sequence along a height direction, and the second fixed guardrail (25) comprises a plurality of second crossbars (251) arranged in sequence along a height direction.

8. A marine passage structure according to claim 6, characterized in that: The second fixed guardrail (25) is extended in a direction close to the first fixed guardrail (11) to provide a flip protection portion (252); And / or, both sides of the turning platform (30) are provided with turning guardrails (37).

9. A marine passage structure according to claim 6, characterized in that: A first protection chain (12) is provided between the two first fixed guardrails (11), and the first protection chain (12) is detachably connected to the first fixed guardrail (11); a second protection chain (26) is provided between the two second fixed guardrails (25), and the second protection chain (26) is detachably connected to the second fixed guardrail (25).

10. A marine passage structure according to claim 9, characterized in that: The first fixed guardrail (11) is provided with a first hook (15), and the two ends of the first protection chain (12) are respectively hung on the first hook (15); the second fixed guardrail (25) is provided with a second hook (27), and the two ends of the second protection chain (26) are respectively hung on the second hook (27).

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