Joint structure of hatch coaming for ship and ship
By setting bent edges and reinforcement ribs at the ship's hatch fence joints, combined with the design of the baffle parts, the problem of vulnerability of hatch fence joints is solved, the durability and structural strength are improved, and the cargo transportation is ensured. Security.
Patent Information
- Application Number
- CN202420711173.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-08
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-04-08
AI Technical Summary
There is a rigid welded connection at the joints of existing ship hatch panels, which is prone to stress damage, resulting in safety hazards and cargo loading.
A joint structure for marine hatch enclosures is designed, with bending edges and reinforcement ribs arranged on the main board body, spaced to avoid rigid connections, improve buffer deformation capabilities, and provide additional shading and cushioning effects through the baffle piece.
It effectively reduces the risk of stress damage at hatch fence joints during ship driving, improves durability and structural strength, reduces the chance of breaking, and enhances the safety of cargo transportation.
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Figure CN222310861U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the field of ship engineering technology, and in particular relates to a joint structure of a ship hatch coaming and a ship. Background Art
[0002] Generally, deck transport ships combine decks, hatch coamings and superstructure end walls to form cargo spaces for transporting dry, miscellaneous and bulk cargoes. Hatch coamings distributed continuously along the length of the ship are welded to the deck and participate in the total longitudinal deformation. Hatch coamings are usually designed into several sections to reduce the adverse effects of the total longitudinal movement of the ship. Generally, the connection joints used between hatch coamings still have some rigid welding connections. During use, the joints are prone to tearing to varying degrees, which poses a safety hazard and affects the normal loading of the ship. Utility Model Content
[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a joint structure of a hatch coaming for a ship and a ship, which reduces the risk of the joint of the hatch coaming being easily damaged due to stress during the sailing of the ship and improves the durability.
[0004] In the first aspect, the present application provides a joint structure of a ship hatch coaming, which is applied to the connection between two adjacent hatch coamings, and the joint structure includes main board bodies of two adjacent hatch coamings, the main board bodies extending along a first direction, and the main board bodies are provided with bent edges at the ends close to the other main board bodies, and the two bent edges are bent to the same side of the two main board bodies and spaced apart along the first direction.
[0005] According to the joint structure of the marine hatch coaming of the present application, the ability of the hatch coaming to buffer deformation is improved by arranging a bent edge. While satisfying the structural strength, two bent edges are arranged at intervals so that there is no rigid connection between two adjacent hatch coamings, thereby reducing the risk of the joint of the hatch coaming being easily damaged due to stress during the navigation of the ship and improving durability.
[0006] According to one embodiment of the present application, a reinforcing rib extending along a first direction is provided on the main board body, the reinforcing rib is provided on a side of the main board body facing the bending edge, and an end of the reinforcing rib in the first direction is spaced apart from the bending edge.
[0007] According to an embodiment of the present application, a chamfered surface is provided at an end portion of the reinforcing rib facing away from the main board body and close to the bending edge, and the chamfered surface is inclined in a direction away from the bending edge and away from the main board body.
[0008] According to an embodiment of the present application, the bending edge extends along the second direction and is perpendicular to the main board body, and the connection between the bending edge and the main board body is rounded.
[0009] According to one embodiment of the present application, a top panel extending along a first direction is provided at the upper end of the main board body, the end of the top panel in the first direction is spaced apart from the bending edge, and the top panel is provided with a chamfered surface at an end close to the bending edge on a side away from the main board body, and the chamfered surface is inclined in a direction away from the main board body along the direction away from the bending edge.
[0010] According to one embodiment of the present application, the joint structure further includes:
[0011] Two baffle members are respectively connected to the two bent edges, the baffle members extend along a first direction, the baffle members are connected to a side of the bent edge away from the main board body and are spaced apart from the other bent edge, the two baffle members are spaced apart along a second direction, and the projections of the two baffle members in the second direction at least partially overlap.
[0012] According to one embodiment of the present application, the spacing distance a between the two baffle members in the second direction satisfies:
[0013] 10mm≤a≤25mm.
[0014] According to an embodiment of the present application, a distance b between one end of the baffle member away from the bent edge connected thereto and the other bent edge satisfies:
[0015] 25mm≤b≤50mm.
[0016] According to one embodiment of the present application, the lower end of the main board body is used to be fixedly connected to the deck, and the lower end of the baffle member is spaced a certain distance c from the lower end of the main board body, satisfying:
[0017] 15mm≤c≤30mm.
[0018] In a second aspect, the present application provides a ship, comprising:
[0019] deck;
[0020] A plurality of hatch coamings are fixedly mounted on the deck, wherein the hatch coamings extend along a first direction, and a joint structure of a marine hatch coaming as described in any technical solution in the first aspect is provided at a connection between two adjacent hatch coamings along the first direction.
[0021] According to the ship of the present application, by setting a joint structure as the above-mentioned technical solution, a bent edge is set to improve the ability of the hatch coaming to buffer deformation. While meeting the structural strength, by setting two bent edges at intervals, there is no rigid connection between two adjacent hatch coamings, thereby reducing the risk of the joint of the hatch coaming being easily damaged due to stress during the navigation of the ship and improving durability.
[0022] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0024] Figure 1 It is one of the structural schematic diagrams of the joint structure of the marine hatch coaming provided in the embodiment of the present application;
[0025] Figure 2 yes Figure 1 The enlarged view of point A in the middle;
[0026] Figure 3 This is the second structural schematic diagram of the joint structure of the marine hatch coaming provided in the embodiment of the present application;
[0027] Figure 4 This is the third structural schematic diagram of the joint structure of the marine hatch coaming provided in the embodiment of the present application;
[0028] Figure 5 yes Figure 4 Enlarged view of point B in the middle.
[0029] Reference numerals:
[0030] 1. Hatch coaming; 11. Main body; 12. Reinforcement ribs; 13. Top panel; 14. Chamfered surface; 15. Bent edge; 16. Baffle; 2. Deck. DETAILED DESCRIPTION
[0031] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.
[0032] Generally, deck transport ships combine decks, hatch coamings and superstructure end walls to form cargo spaces for transporting dry, miscellaneous and bulk cargoes. Hatch coamings distributed continuously along the length of the ship are welded to the deck and participate in the total longitudinal deformation. Hatch coamings are usually designed into several sections to reduce the adverse effects of the total longitudinal movement of the ship. Generally, the connection joints used between hatch coamings still have some rigid welding connections. During use, the joints are prone to tearing to varying degrees, which poses a safety hazard and affects the normal loading of the ship.
[0033] To this end, the present application proposes a joint structure for a marine hatch coaming, which is applied to the connection between two adjacent hatch coamings to reduce the risk of the joint of the hatch coaming being easily damaged due to stress during the navigation of the ship and improve durability.
[0034] Reference below Figure 1-Figure 5 A joint structure of a ship hatch coaming according to an embodiment of the present application is described.
[0035] The joint structure includes main plates 11 of two adjacent hatch coamings 1, the main plates 11 extending along a first direction, the main plates 11 being provided with a bent edge 15 at an end close to the other main plate 11, the two bent edges 15 being bent toward the same side of the two main plates 11 and spaced apart along the first direction.
[0036] The joint structure includes main plates 11 of two adjacent hatch coamings 1. The two main plates 11 are arranged at a relative interval. The opposite ends of the two main plates 11 are provided with bending edges 15. The bending edges 15 and the main plates 11 are arranged at an angle, and there is a distance between the two bending edges 15.
[0037] In the present embodiment, the main board body 11 of the hatch coaming 1 extends along the first direction, and the main board bodies 11 of two adjacent hatch coamings 1 are arranged opposite to each other at one end in the first direction. The main board body 11 is provided with a bending edge 15 at the end close to the other main board body 11, that is, the main board body 11 is provided with a bending edge 15 at the end in the first direction. By providing the bending edge 15 to be connected with the deck 2, elastic deformation can occur between the bending edge 15 and the main board body 11 when total longitudinal deformation occurs, so as to improve the buffering deformation capacity of the end of the hatch coaming 1 in the first direction.
[0038] Among them, two bent edges 15 located on opposite sides of two adjacent main board bodies 11 are bent toward the same side of the main board body 11 in the second direction, and the two bent edges 15 are spaced apart along the first direction, so that there is no rigid connection structure between the two hatch coamings 1, so that a space is formed between the two adjacent hatch coamings 1, thereby reducing the risk of fracture at the joint due to the total longitudinal deformation of the ship while meeting the structural strength.
[0039] According to the joint structure of the marine hatch coaming 1 of the present application, the ability of the hatch coaming 1 to buffer deformation is improved by arranging the bent edge 15. Under the condition of meeting the structural strength, the two bent edges 15 are arranged at intervals so that there is no rigid connection between two adjacent hatch coamings 1, thereby reducing the risk of the joint of the hatch coaming 1 being easily damaged due to stress during the navigation of the ship and improving the durability.
[0040] According to some embodiments of the present application, Figure 1 and Figure 4As shown, the main board body 11 may be provided with a reinforcing rib 12 extending along the first direction. The reinforcing rib 12 may be provided on a side of the main board body 11 facing the bending edge 15 , and the end of the reinforcing rib 12 in the first direction may be spaced apart from the bending edge 15 .
[0041] The main board body 11 is provided with a reinforcing rib 12 extending along the first direction, and the reinforcing rib 12 is provided on one side of the main board body 11 facing the bending edge 15 . The structural strength of the reinforcing board itself is improved by providing the reinforcing rib 12 .
[0042] By spacing the end of the reinforcing rib 12 in the first direction away from the bent edge 15, the stress between the bent edge 15 and the reinforcing rib 12 can be reduced. This is beneficial because when the hatch coaming 1 is subjected to stress, the bent edge 15 at the end of the hatch coaming 1 can be effectively deformed to release the stress, thereby reducing the chance of damage.
[0043] In some embodiments, Figure 4 As shown, a plurality of reinforcing ribs 12 may be provided distributed in the up-down direction, and the plurality of reinforcing ribs 12 are distributed at intervals in the up-down direction on one side of the main body 11 . The structural strength of the hatch coaming 1 is improved by providing a plurality of reinforcing ribs 12 .
[0044] According to some embodiments of the present application, Figure 1 As shown, the side of the reinforcing rib 12 away from the main body 11 may be provided with a chamfered surface 14 at the end close to the bending edge 15 , and the chamfered surface 14 is inclined in a direction away from the bending edge 15 and away from the main body 11 .
[0045] In this embodiment, the height direction of the reinforcing rib 12 extends along the second direction, and the side of the reinforcing rib 12 facing away from the main board body 11 can be provided with a chamfered surface 14 at the end close to the bending edge 15, that is, the top of the reinforcing rib 12 is provided with a chamfered surface 14 at one end close to the bending edge 15, and the chamfered surface 14 is inclined in the direction away from the main board body 11 along the direction away from the bending edge 15. By chamfering the end of the reinforcing rib 12 close to the bending edge 15, the stress of the end position of the reinforcing rib 12 can be released, thereby improving the ability to buffer deformation.
[0046] In one example, reference Figure 1 ,exist Figure 1 The maximum height h of the middle chamfer 14 is 15 mm, and the angle α between the chamfer 14 and the top surface of the reinforcing rib 12 is 150°. It is understandable that in other examples, the height and inclination angle of the chamfer 14 can also be other values, which are determined according to actual conditions and are not limited here.
[0047] According to some embodiments of the present application, Figure 1 and Figure 3As shown, the bending edge 15 can extend along the second direction and be perpendicular to the main board body 11 , and the connection between the bending edge 15 and the main board body 11 is rounded.
[0048] In this embodiment, the bending edge 15 extends along the second direction and is arranged perpendicular to the main body 11, which can improve the ability of the bending edge 15 to resist buffering deformation, improve the strength of the installation structure, and facilitate the connection and installation of two adjacent hatch coamings 1.
[0049] The connection between the bent edge 15 and the main body 11 is arranged in an arc shape, and proper rounding treatment is performed to improve the buffering capacity and reduce the probability of deformation and fracture.
[0050] According to some embodiments of the present application, Figure 3 As shown, Figure 3 In the top view of the connecting structure, a top panel 13 extending along a first direction is provided at the upper end of the main board body 11, and the end of the top panel 13 in the first direction is spaced apart from the bending edge 15. The top panel 13 is provided with a chamfered surface 14 at an end close to the bending edge 15 on a side away from the main board body 11, and the chamfered surface 14 is inclined in a direction away from the main board body 11 along the direction away from the bending edge 15.
[0051] The top panel 13 is covered on the upper end of the main body 11 and fixedly connected to the main body 11. The top panel 13 is provided to improve the safety of personnel during the operation of the ship and reduce the risk of damage to personnel and objects by collision with the main body 11. The top panel 13 is also provided with a chamfer 14 to release the stress of the top panel 13 at the end position, thereby improving the overall buffer deformation capacity of the hatch coaming 1.
[0052] According to some embodiments of the present application, Figure 1-Figure 5 As shown, the joint structure of the marine hatch coaming 1 may further include two baffle members 16, which are respectively connected to the two bent edges 15, the baffle members 16 may extend along a first direction, the baffle members 16 are connected to a side of the bent edge 15 away from the main body 11 and are spaced apart from the other bent edge 15, the two baffle members 16 are spaced apart along a second direction, and the projections of the two baffle members 16 in the second direction at least partially overlap.
[0053] In this embodiment, by providing a baffle member 16 extending along the first direction, the gap between two adjacent hatch coamings 1 can be shielded, and in a transport ship on the deck 2, cargo can be prevented from falling out of the gap.
[0054] Two baffle members 16 are provided, and the two baffle members 16 are respectively connected to two oppositely arranged bent edges 15, and one end of the baffle member 16 is away from the corresponding bent edge 15 connected thereto and is spaced apart from the other bent edge 15, and is not connected, so as to provide deformation space for the hatch coaming 1 and improve the buffer deformation capacity. The two baffle members 16 are spaced apart along the second direction to avoid mutual interference between the two baffle members 16, and the projections of the two baffle members 16 in the second direction at least partially overlap, so that the two baffle members 16 cooperate to improve the shielding effect in the second direction, so that the cargo is not easy to fall out from the gap between the two baffles.
[0055] According to some embodiments of the present application, Figure 2 As shown, the spacing distance a between the two baffle members 16 in the second direction can satisfy:
[0056] 10mm≤a≤25mm.
[0057] In this embodiment, by limiting the spacing distance between the two baffle members 16 in the second direction, the shielding effect is improved as much as possible without interference between the two baffle members 16, thereby reducing the probability of goods falling out.
[0058] Among them, the value range of the spacing distance a is [10mm, 25mm]. For example, the spacing distance a can be 10mm, 12mm, 15mm, 17mm, 20mm, 22mm, 25mm or other values between 10mm-25mm, which are not limited here.
[0059] According to some embodiments of the present application, Figure 2 As shown, the distance b between one end of the baffle member 16 away from the bent edge 15 connected thereto and the other bent edge 15 satisfies:
[0060] 25mm≤b≤50mm.
[0061] In this embodiment, by limiting the distance between one end of the baffle member 16 away from the bent edge 15 connected thereto and the other bent edge 15, sufficient buffer space is provided between two adjacent hatch coamings 1, thereby improving the buffer deformation capacity.
[0062] Among them, the value range of the spacing distance b is [25mm, 50mm]. For example, the spacing distance b can be 25mm, 30mm, 35mm, 40mm, 45mm, 50mm or other values between 25mm-50mm, which are not limited here.
[0063] According to some embodiments of the present application, Figure 5As shown, the lower end of the main body 11 is used to be fixedly connected to the deck 2, and the lower end of the baffle member 16 is spaced a certain distance c from the lower end of the main body 11, which can meet the following requirements:
[0064] 15mm≤c≤30mm.
[0065] In this embodiment, the lower end of the main body 11 is used to be fixedly connected to the deck 2, so that the hatch coaming 1 is fixedly installed on the deck 2, wherein the lower end of the baffle member 16 is spaced from the lower end of the main body 11, and the lower end of the baffle member 16 is higher than the lower end of the main body 11, so that a certain gap is formed between the lower end of the baffle member 16 and the deck 2, so that the baffle member 16 is not fixedly connected to other positions except for being connected to the bent edge 15, and can move freely with the active deformation of the hatch coaming 1, and is not easily affected by stress, thereby reducing the probability of its rupture and damage. It can be understood that the spacing distance c between the lower end of the baffle member 16 and the lower end of the main body 11 is the spacing distance between the lower end of the baffle member 16 and the deck 2.
[0066] Among them, the value range of the spacing distance c is [15mm, 30mm]. For example, the spacing distance c can be 15mm, 17mm, 20mm, 22mm, 25mm, 27mm, 30mm or other values between 15mm-30mm, which are not limited here.
[0067] In some embodiments, Figure 1 As shown, the distance d between the two oppositely disposed bending edges 15 can satisfy:
[0068] 150mm≤d≤300mm.
[0069] By limiting the distance between the two bent edges 15, the distance between the two hatch coamings 1 is not too large to affect the overall structural strength, nor too small to affect the buffering deformation capacity and make assembly and connection inconvenient.
[0070] An embodiment of the present application also provides a ship.
[0071] The ship comprises a deck 2 and a plurality of hatch coamings 1, wherein the plurality of hatch coamings 1 are mounted on the deck 2, the hatch coamings 1 extend along a first direction, and a joint structure of a ship's hatch coaming 1 according to any of the above technical solutions is provided at a connection between two adjacent hatch coamings 1 along the first direction.
[0072] It should be noted that, because the joint structure of the ship hatch coaming 1 of the present embodiment is the joint structure of the ship hatch coaming 1 of any of the above-mentioned technical solutions, the technical features and technical effects of the joint structure of the ship hatch coaming 1 of any of the above-mentioned technical solutions are not repeated here.
[0073] In this embodiment, the ship may further include a superstructure end wall to enclose a cargo space with the deck 2 and the hatch coaming 1. Taking the direction of the bow and the stern as the length direction of the ship and the length direction of the ship as the first direction as an example, the hatch coaming 1 may extend along the length direction of the ship to participate in the total longitudinal deformation of the deck 2.
[0074] According to the ship of the present application, by setting a joint structure as the above-mentioned technical solution, a bent edge 15 is set to improve the ability of the hatch coaming 1 to buffer deformation. Under the condition of meeting the structural strength, by arranging two bent edges 15 at intervals, there is no rigid connection between two adjacent hatch coamings 1, thereby reducing the risk of the joint of the hatch coaming 1 being easily damaged due to stress during the navigation of the ship, thereby improving durability.
[0075] It should be noted that in the technical solution of the present application, for ease of understanding, the hatch coaming 1 is arranged to extend along the first direction, and the first direction can be the length direction of the ship or the width direction of the ship, that is, the arrangement direction of the hatch coaming 1 on the deck 2 is not limited.
[0076] In some embodiments, the hatch coaming 1 may be arranged along the width direction of the ship.
[0077] In some embodiments, the hatch coamings 1 may be arranged along the length direction and the width direction of the ship at the same time, so that the hatch coamings 1 may be enclosed to form a frame structure.
[0078] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.
[0079] In the description of the present application, 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 application 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 application.
[0080] In the description of this application, "first feature" or "second feature" may include one or more of the features.
[0081] In the description of the present application, “plurality” means two or more.
[0082] In the description of the present application, a first feature being “on” or “under” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact with each other but are in contact with each other via another feature therebetween.
[0083] In the description of the present application, “above”, “over” and “above” a first feature to a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.
[0084] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.
[0085] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.
Claims
1. A joint structure of a marine hatch coaming, applied to the connection between two adjacent hatch coamings, characterized in that: The joint structure includes main board bodies of two adjacent hatch coamings, wherein the main board bodies extend along a first direction, and the main board bodies are provided with bending edges at ends close to the other main board bodies, and the two bending edges are bent toward the same side of the two main board bodies and spaced apart along the first direction.
2. The joint structure of the marine hatch coaming according to claim 1, characterized in that: The main board body is provided with a reinforcing rib extending along a first direction. The reinforcing rib is arranged on a side of the main board body facing the bending edge. An end of the reinforcing rib in the first direction is spaced apart from the bending edge.
3. The joint structure of the marine hatch coaming according to claim 2, characterized in that: A chamfered surface is provided at an end portion of the reinforcing rib facing away from the main board body and close to the bending edge. The chamfered surface is inclined in a direction away from the bending edge and away from the main board body.
4. The joint structure of the marine hatch coaming according to claim 1, characterized in that: The bending edge extends along the second direction and is perpendicular to the main board body, and the connection between the bending edge and the main board body is rounded.
5. The joint structure of the marine hatch coaming according to claim 1, characterized in that: The upper end of the main board body is provided with a top panel extending along the first direction, the end of the top panel in the first direction is spaced apart from the bending edge, and the top panel is provided with a chamfered surface at an end close to the bending edge on a side away from the main board body, and the chamfered surface is inclined in a direction away from the main board body along the direction away from the bending edge.
6. The joint structure of a marine hatch coaming according to any one of claims 1 to 5, characterized in that: Also includes: Two baffle members are respectively connected to the two bent edges, the baffle members extend along a first direction, the baffle members are connected to a side of the bent edge away from the main board body and are spaced apart from the other bent edge, the two baffle members are spaced apart along a second direction, and the projections of the two baffle members in the second direction at least partially overlap.
7. The joint structure of the marine hatch coaming according to claim 6, characterized in that: The spacing a between the two baffle members in the second direction satisfies: 10mm≤a≤25mm.
8. The joint structure of the marine hatch coaming according to claim 6, characterized in that: The distance b between one end of the baffle member away from the bent edge connected thereto and the other bent edge satisfies: 25mm≤b≤50mm.
9. The joint structure of a marine hatch coaming according to claim 6, characterized in that: The lower end of the main body is used to be fixedly connected to the deck, and the lower end of the baffle is spaced a certain distance c from the lower end of the main body, satisfying: 15mm≤c≤30mm.
10. A ship, characterized in that: include: deck; A plurality of hatch coamings are fixedly mounted on the deck, wherein the hatch coamings extend along a first direction, and a joint structure of a marine hatch coaming as claimed in any one of claims 1 to 9 is provided at a connection between two adjacent hatch coamings along the first direction.