Expansion connecting device for longitudinal hatch coaming on deck

Abstract

The utility model discloses an expansion connecting device for a longitudinal hatch coaming on a deck. The device comprises the longitudinal hatch coaming arranged on a cargo hold on a ship deck. The longitudinal hatch coaming is longitudinally provided with a bent structure, the bent structure protrudes towards the outer portion of the longitudinal hatch coaming, the upper end of the bent structure is connected with the hatch coaming panel, and the lower end of the bent structure is connected with the main deck. The hatch coaming panel is located at the top end of the longitudinal hatch coaming, and a bent panel is arranged at the position, located at the top of the bent structure, of the hatch coaming panel. The purpose of preventing the hatch coaming from being damaged due to bending deformation of a ship can be achieved at low cost through a simple and reasonable structural form.

Description

Technical Field

[0001] This application relates to the field of marine technology, specifically to an expansion connection device for longitudinal hatch coamings on a deck. Background Technology

[0002] Special-purpose vessels, for the convenience of frequent loading and unloading, often have cargo holds located on deck without hatch covers, resulting in relatively long longitudinal hatch coamings. To prevent damage to these longitudinal hatch coamings due to their involvement in the longitudinal deformation of the hull, they are typically interrupted, as described above. Figure 4a .

[0003] In existing technology, a vertical semi-circular or square structure is installed at the discontinuity of the longitudinal hatch coaming, and then the horizontal panel at the top of the longitudinal hatch coaming is interrupted, serving as an expansion structure to absorb deformation. Since a section of the longitudinal hatch coaming exists independently after the interruption, its load-bearing capacity is relatively weak. To ensure that the hatch coaming can withstand the horizontal loads from cargo and waves, this independent section of the hatch coaming needs to be reinforced. To ensure the local strength of the hatch coaming, existing technology sets elbow plates at both ends of this expansion structure, and installs a reinforcing structure under the deck for these elbow plates to ensure local strength. This elbow plate uses a cantilever beam structure design, which is cumbersome, has a weak load-bearing capacity, and is prone to stress concentration. Utility Model Content

[0004] In view of this, the main objective of this application is to provide an expansion connection device for longitudinal hatch coamings on deck, which can achieve the goal of avoiding damage to hatch coamings due to ship bending deformation through a simple and reasonable structural form at a low cost.

[0005] This application provides an expansion connection device for a longitudinal hatch coaming on a deck, comprising:

[0006] Longitudinal hatch coamings installed on cargo holds on the ship's deck;

[0007] The longitudinal hatch coaming is provided with a curved structure, the upper end of which is connected to the hatch coaming panel and the lower end of which is connected to the main deck.

[0008] The hatch coaming panel is located at the top of the longitudinal hatch coaming, and a curved panel is provided on the hatch coaming panel at the position of the top of the curved structure.

[0009] As described above, a raised, curved structure is provided on the longitudinal hatch coaming, which can protrude towards the inside or outside of the cargo hold. This curved structure can effectively absorb the deformation of the longitudinal hatch coaming and ensure that the longitudinal hatch coaming has sufficient strength to withstand lateral forces. The curved panel design ensures that the hatch coaming panel is uninterrupted, maintaining the continuity of the hatch coaming panel. The curved panel can protrude towards the top outer side or the top inner side. The structural design of the curved structure of the longitudinal hatch coaming and the curved panel of the hatch coaming panel performs well under stress, and can more effectively absorb the deformation of the hull beams, and also provides better stress distribution, which helps to improve the safety of the ship in harsh sea conditions, especially when encountering extreme conditions such as storms, and can better resist external loads.

[0010] Optionally, when the hatch coaming panel and the curved panel are a seamless continuous body, the distance from the start point to the end point of the curved panel is less than the distance from the start point to the end point of the curved structure.

[0011] As shown above, the curved panel of the hatch coaming (which serves as the expansion structure of the hatch coaming) is slightly shorter than the curved structure of the longitudinal hatch coaming (which serves as the expansion structure of the longitudinal hatch coaming). This ensures that the expansion structure of the longitudinal hatch coaming can withstand the lateral force. The curved panel and the curved structure are not welded together, which ensures that the deformation of the hull beams can be absorbed.

[0012] Optionally, when the hatch coaming panel and the curved panel are a seamless continuous body, a reinforcing curved panel is provided above the curved panel, and the distance from the start point to the end point of the reinforcing curved panel is greater than the distance from the start point to the end point of the curved panel.

[0013] As shown above, after installing a curved panel on the hatch coaming panel, the hatch coaming panel's ability to bear bending moment in the horizontal direction will be reduced. After actual calculation, if the hatch coaming panel's ability to bear bending moment is insufficient, an additional reinforcing curved panel needs to be provided on the hatch coaming panel to ensure that the hatch coaming panel can bear sufficient bending moment in the horizontal direction.

[0014] Optionally, when the hatch coaming panel and the curved panel are fixedly connected as a continuous body, the horizontal discontinuity distance of the hatch coaming panel is less than the distance from the start point to the end point of the curved structure.

[0015] As described above, the hatch coaming panel and the curved panel are fixedly connected to form a continuous body. That is, the hatch coaming panel is welded to both ends of the curved panel in the horizontal direction. The welding makes the hatch coaming panel and the curved panel a continuous whole. In order to ensure that the curved structure can form an effective support point at the hatch coaming panel, the discontinuity distance of the hatch coaming panel needs to be designed to be smaller than the bending distance of the curved structure.

[0016] Optionally, the distance from the start point to the end point of the curved panel is greater than the distance from the start point to the end point of the curved structure.

[0017] As shown above, the length between the two bending points of the curved panel exceeds the length between the two bending points of the curved structure, allowing the two ends of the curved panel to be welded to the hatch coaming panel and the deck, thus forming a fulcrum, enabling the curved structure to withstand a larger horizontal force.

[0018] Optionally, the two ends of the discontinuity of the hatch coaming panel are fixedly connected to the curved structure; the two ends of the curved panel cross the discontinuity of the hatch coaming panel and are fixedly connected to the upper surface of the hatch coaming panel.

[0019] As shown above, the curved panel crosses the discontinuity and is fixedly connected to the hatch coaming panel, which not only ensures the continuity of the hatch coaming panel, but also enables the hatch coaming panel to maintain good structural strength even at the discontinuity, so that the hatch coaming panel provides good structural support for the longitudinal hatch coaming.

[0020] Optionally, the reinforcing rib is horizontally disposed on the longitudinal hatch coaming, and the reinforcing rib is interrupted at the bending structure, and the reinforcing rib is fixedly connected to the bending structure at the bending structure.

[0021] As shown above, the reinforcing rib is interrupted at the bending structure. The bending structure serves as the fulcrum of the reinforcing rib and is fixedly connected to it, ensuring that the reinforcing rib can still play a role in enhancing the strength of the longitudinal hatch coaming in other parts.

[0022] Optionally, the number of horizontally arranged reinforcing ribs is set according to the actual stress condition of the longitudinal hatch coaming.

[0023] Based on the above, the actual stress condition of the longitudinal hatch coaming can be analyzed according to the basic data such as the geometric dimensions, material properties, and load conditions. The number of stiffeners can then be set accordingly. This simplifies the structural design as much as possible while meeting the basic structural strength requirements, and avoids excessive stiffeners that would lead to structural complexity and increased costs.

[0024] Optionally, the curved structure, the curved panel, and the reinforced curved panel adopt a smooth structure.

[0025] As shown above, a smooth structure can reduce stress concentration because a structure with a smooth transition can better distribute the load, thereby avoiding excessive stress in certain specific areas.

[0026] In summary, the expansion connection device for longitudinal hatch coamings on deck provided in this application maintains the continuity of the hatch coaming panel by employing an uninterrupted panel design, thereby avoiding a series of problems caused by interruptions in the hatch coaming panel in the prior art. In this application, an expansion structure is provided at the corresponding position of the expansion structure on the hatch coaming panel and the longitudinal hatch coaming panel, and the expansion structure on the hatch coaming panel and the expansion structure on the longitudinal hatch coaming panel are not welded together, ensuring that the deformation of the hull beams can be absorbed. Attached Figure Description

[0027] The various technical features of this application and their relationships will be further explained below with reference to the accompanying drawings. The drawings are exemplary; some technical features are not shown to scale, and some drawings may omit technical features commonly used in the art to which this application pertains that are not essential for understanding and implementing this application, or additionally show technical features that are not essential for understanding and implementing this application. In other words, the combination of various technical features shown in the drawings is not intended to limit this application. Furthermore, throughout this application, the same reference numerals refer to the same things. Specific descriptions of the drawings are as follows:

[0028] Figure 1a This is a schematic diagram of one embodiment of an expansion connection device for a longitudinal hatch coaming on a deck, as described in this application.

[0029] Figure 1b This is a schematic diagram of the AA side structure of an expansion connection device for a longitudinal hatch coaming on a deck, as described in this application.

[0030] Figure 1c This is a schematic diagram of the BB side structure of an expansion connection device for a longitudinal hatch coaming on a deck, as described in this application.

[0031] Figure 1d This is a schematic diagram of the CC side structure of an expansion connection device for a longitudinal hatch coaming on a deck, as described in this application.

[0032] Figure 2 This is a schematic diagram of another embodiment of an expansion connection device for a longitudinal hatch coaming on a deck, as described in this application.

[0033] Figure 3 This is a schematic diagram of another embodiment of an expansion connection device for a longitudinal hatch coaming on a deck, as described in this application.

[0034] Figure 4a This is a schematic diagram of the expansion structure of a longitudinal hatch coaming in the prior art;

[0035] Figure 4b This is a schematic diagram from the AA side direction in the prior art;

[0036] Figure 4c This is a schematic diagram from the BB side in the prior art.

[0037] Explanation of reference numerals in the attached figures

[0038] 1-Longitudinal hatch coaming, 11-Bent structure, 2-Hatch coaming panel, 21-Bent panel, 3-Reinforced bent panel, 4-Strengthening rib, 51-Vertical elbow plate, 52-Horizontal elbow plate, P1-Starting point of bent panel, S1-Ending point of bent panel, P′1-One discontinuity of hatch coaming panel, S′1-Another discontinuity of hatch coaming panel, P2-Starting point of bent structure, S2-Ending point of bent structure, P3-Starting point of reinforced bent panel, S3-Ending point of reinforced bent panel.

[0039] The accompanying drawings have illustrated specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to specific embodiments. Detailed Implementation

[0040] The preferred embodiments of this application will now be described in detail with reference to the accompanying drawings, so that the advantages and features of this application can be more easily understood by those skilled in the art, thereby providing a clearer and more definite definition of the scope of protection of this application.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0042] It should be noted that in the description herein, the terms "middle," "front," "back," "top," "bottom," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0043] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linked," "socketed," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection; they can refer to a direct connection, or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] Some ships have cargo holds on the deck, and their longitudinal hatch coamings 1 need to use expansion structures at certain intervals to absorb the deformation of the longitudinal hatch coamings 1 in order to avoid damage to the longitudinal hatch coamings 1 caused by the deformation of the hull beams.

[0045] The current practice is, as Figures 4a-4c As shown, the longitudinal hatch coaming 1 is interrupted (see...). Figure 4a A vertical semi-circular or square structure is installed at the interruption point of the longitudinal hatch coaming 1 to interrupt the horizontal panel (i.e., hatch coaming panel 2) on the longitudinal hatch coaming 1, serving as an expansion structure to absorb deformation. To ensure the local strength of the longitudinal hatch coaming 1, i.e., to ensure its ability to withstand wind and waves, vertical elbow plates 51 (see [reference]) need to be installed at the front and rear ends of this expansion structure. Figures 4b-4c The vertical elbow plate 51 adopts a cantilever beam structure design, which performs poorly under stress and is prone to causing large stress concentrations; in addition, a horizontal elbow plate 52 is provided on the side of the vertical elbow plate 51 (see Figure 4c This structural design is cumbersome and prone to stress concentration, and the addition of the horizontal elbow plate 52 affects the original equipment layout on the deck.

[0046] In addition, the gap between the independent longitudinal hatch coaming 1 and the main hatch coaming needs to be covered with flat steel. The friction between the flat steel and the longitudinal hatch coaming 1 may damage the coaming structure and reduce its service life.

[0047] To address the shortcomings of the prior art, this application improves the expansion structure in the prior art. Instead of interrupting the expansion structure of the hatch coaming panel 2, a semi-circular expansion structure is set at the corresponding position of the expansion structure of the longitudinal hatch coaming panel 1 on the hatch coaming panel 2. The expansion structure of the hatch coaming panel 2 is slightly shorter than the expansion structure of the longitudinal hatch coaming panel 1, providing a fulcrum for the vertically set expansion structure of the longitudinal hatch coaming panel 1. This ensures the strength of the expansion structure of the longitudinal hatch coaming panel 1 in withstanding lateral forces. The expansion structure on the hatch coaming panel 2 is not welded to the expansion structure of the longitudinal hatch coaming panel 1, which ensures the absorption of deformation of the hull beam.

[0048] In the improved structure, the expansion structure of the hatch coaming panel 2 provides a support point for the expansion structure of the longitudinal hatch coaming 1. That is, the expansion structure of the longitudinal hatch coaming 1 has a support point above it, which itself can serve as a reinforcing structure for the longitudinal hatch coaming 1, ensuring its strength. Since both the expansion structures of the longitudinal hatch coaming 1 and the hatch coaming panel 2 are smooth structures, stress concentration will not occur. Furthermore, the need for two large vertical elbow plates is eliminated, saving labor time, reducing steel consumption, and lowering costs.

[0049] The technical solutions of this application and how they solve the aforementioned technical problems will be described in detail below with specific embodiments. The specific embodiments described below can be combined with each other to form new embodiments. The same or similar ideas or processes described in one embodiment may not be repeated in other embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0050] Figure 1a This application illustrates a specific embodiment of an expansion connection device for a longitudinal hatch coaming 1 on a deck.

[0051] like Figure 1a As shown, an expansion connection device for a longitudinal hatch coaming 1 on a deck includes:

[0052] Longitudinal hatch coaming 1 installed on cargo holds on the ship's deck;

[0053] A curved structure 11 is longitudinally provided in front of the longitudinal hatch coaming 1. The upper end of the curved structure 11 is connected to the hatch coaming panel 2, and the lower end of the curved structure 11 is connected to the main deck.

[0054] The hatch coaming panel 2 is located at the top of the longitudinal hatch coaming 1, and a curved panel 21 is provided on the hatch coaming panel 2 at the position of the top of the curved structure 11.

[0055] Specifically, a raised curved structure 11 is provided on the longitudinal hatch coaming 1, and the curved structure 11 can protrude towards the inside or outside of the cargo hold, with the outward protrusion taking into account the possibility of using a forklift inside the cargo hold; the curved structure 11 can effectively absorb the deformation of the longitudinal hatch coaming 1, and also ensure that the longitudinal hatch coaming 1 has sufficient strength to withstand lateral forces; the design of the curved panel 21 ensures that the hatch coaming panel 2 is uninterrupted, maintaining the continuity of the hatch coaming panel 2, and the curved panel 21 can protrude towards the top outer side or towards the top inner side; the structural design of the curved structure 11 of the longitudinal hatch coaming 1 and the curved panel 21 of the hatch coaming panel 2 performs well under stress, and can more effectively absorb the deformation of the hull beams, and also provides better stress distribution, which helps to improve the safety of the ship in harsh sea conditions, especially when encountering extreme conditions such as storms, and can better resist external loads.

[0056] Figure 1a This is a schematic diagram on the XZ plane. Figure 1b This is a schematic diagram of the XY plane from the AA direction. Figure 1c This is a schematic diagram of a cross-section of the XY plane along the BB direction. Figure 1d This is a schematic diagram of a cross-section of the XY plane from the CC direction; in Figures 1a-1d In the specific embodiment shown, the hatch coaming panel 2 and the curved panel 21 are integrated, ensuring the continuity of the hatch coaming panel 2 and enabling the hatch coaming panel 2 to withstand forces in the Y direction. A curved structure 11 protruding outward is provided on the longitudinal hatch coaming 1 as an expansion structure of the longitudinal hatch coaming 1. A curved panel 21 protruding upward is provided at a position corresponding to the position of the curved structure 11 on the hatch coaming panel 2 as an expansion structure of the hatch coaming panel 2. The curved structure 11 and the curved panel 21 are not welded together, but the longitudinal hatch coaming 1 and the curved structure 11 are welded to the hatch coaming panel 2. The distance between the two bending points of the curved structure 11 (i.e., the starting point P2 and the ending point S2 of the curved structure 11) is slightly longer than the distance between the two bending points of the curved panel 21 (i.e., the starting point P1 and the ending point S1 of the curved panel 21). This ensures that both ends of the expansion structure of the longitudinal hatch coaming 1 have support points and can withstand larger forces in the Y direction.

[0057] It should be noted that the starting point and ending point are used merely to more clearly illustrate the length comparison of some structural settings in this application. The positions of the starting point and ending point can be interchanged, and the starting point and ending point do not represent the narrow meaning of "start" and "end" in this application, but rather to set corresponding points for a specific structure to facilitate the comparison of the distance between two points with other distances. The starting point and ending point in this application are also the bending points of some structures.

[0058] Optionally, when the hatch coaming panel 2 and the curved panel 21 are a seamless continuous body, the distance from the starting point P1 to the ending point S1 of the curved panel 21 is less than the distance from the starting point P2 to the ending point S2 of the curved structure 11.

[0059] like Figure 1a In the specific embodiment shown, the curved panel 21 of the hatch coaming panel 2 (which serves as the expansion structure of the hatch coaming panel 2) is slightly shorter than the curved structure 11 of the longitudinal hatch coaming 1 (which serves as the expansion structure of the longitudinal hatch coaming 1). This ensures that the expansion structure of the longitudinal hatch coaming 1 can withstand the lateral force in the horizontal direction. The curved panel 21 and the curved structure 11 are not welded together, which ensures that the deformation of the hull beam is absorbed.

[0060] Optionally, when the hatch coaming panel 2 and the curved panel 21 are seamlessly continuous, a reinforcing curved panel 3 is provided above the curved panel 21, and the distance from the starting point P3 to the ending point S3 of the reinforcing curved panel 3 is greater than the distance from the starting point P1 to the ending point S1 of the curved panel 21.

[0061] like Figure 2 In the specific embodiment shown, after the curved panel 21 is provided on the hatch coaming panel 2, the bending moment bearing capacity of the hatch coaming panel 2 in the horizontal direction will be reduced. After actual calculation, if the bending moment bearing capacity of the hatch coaming panel 2 is insufficient, an additional reinforcing curved panel 3 needs to be provided on the hatch coaming panel 2 to ensure that the hatch coaming panel 2 can bear sufficient bending moment in the horizontal direction, so as to achieve the purpose of reinforcing the hatch coaming panel 2.

[0062] Optionally, the bending structure 11, the bending panel 21, and the reinforced bending panel 3 adopt a smooth structure.

[0063] Specifically, smooth structures can reduce stress concentration because a structure with a smooth transition can better distribute the load, thereby avoiding excessive stress in certain areas.

[0064] In addition, the smooth structure can also improve the strength of the longitudinal hatch coaming 1, especially under dynamic loads, such as wave impact or vibration generated when the ship is sailing in turbulent waters.

[0065] Optionally, when the hatch coaming panel 2 and the curved panel 21 are fixedly connected as a continuous body, the horizontal discontinuity distance of the hatch coaming panel 2 is less than the distance from the starting point P2 to the ending point S2 of the curved structure 11.

[0066] Specifically, the hatch coaming panel 2 and the curved panel 21 are fixedly connected as a continuous body, that is, the horizontal section of the hatch coaming panel 2 is welded to both ends of the curved panel 21, making the hatch coaming panel 2 and the curved panel 21 a continuous whole through welding; since there is a gap in the horizontal section of the hatch coaming panel 2, which is formed by the two discontinuities P′1 and S′1 of the hatch coaming panel 2, see [reference needed] Figure 3 As shown; to ensure the bending moment of the hatch coaming panel 2 in the horizontal direction, a curved panel 21 is welded; to ensure that the curved structure 11 can form an effective support point at the hatch coaming panel 2, the horizontal discontinuity of the hatch coaming panel 2 needs to be designed (i.e., Figure 3 The distance between the two discontinuities P′1 and S′1 of the hatch coaming panel 2 is less than the distance between the two bending points of the curved structure 11 (i.e., Figure 3 The distance between the starting point P2 and the ending point S2 of the curved structure 11 in the figure.

[0067] Optionally, the distance from the starting point P1 to the ending point S1 of the curved panel 21 is greater than the distance from the starting point P2 to the ending point S2 of the curved structure 11.

[0068] Specifically, the length between the two bending points of the curved panel 21 (i.e., the length between the starting point P1 and the ending point S1 of the curved panel 21) exceeds the length between the two bending points of the curved structure 11 (i.e., the length between the starting point P2 and the ending point S2 of the curved structure 11), so that the two ends of the curved panel 21 can be welded to the hatch coaming panel 2 and the deck to form a fulcrum, allowing the curved structure 11 to withstand a larger horizontal force.

[0069] Optionally, the two ends of the discontinuity of the hatch coaming panel 2 are fixedly connected to the curved structure 11; the two ends of the curved panel 21 cross the discontinuity of the hatch coaming panel 2 and are fixedly connected to the upper surface of the hatch coaming panel 2.

[0070] Specifically, the curved panel 21 spans the discontinuities P′1 and S′1 of the hatch coaming panel 2 (see [reference]). Figure 3 The curved panel 21 is fixedly connected to the hatch coaming panel 2, which not only ensures the continuity of the hatch coaming panel 2, but also ensures that the hatch coaming panel 2 can maintain good structural strength even at discontinuities, so that the hatch coaming panel 2 provides good structural support for the longitudinal hatch coaming 1.

[0071] like Figure 3As shown, the curved panel 21 in this embodiment is semi-elliptical, and the two bending points of the curved panel 21, namely the starting point P1 and the ending point S1, are welded to the hatch coaming panels 2 on both sides, ensuring the overall continuity of the hatch coaming panels 2; the curved panel 21 is not welded to the curved structure 11, ensuring that it can absorb the deformation of the hull beam.

[0072] Optionally, the reinforcing rib 4 is horizontally arranged on the longitudinal hatch coaming 1, and the reinforcing rib 4 is interrupted at the bending structure 11, and the reinforcing rib 4 is fixedly connected to the bending structure 11 at the bending structure 11.

[0073] Specifically, the reinforcing rib 4 can be set on the inner wall of the longitudinal hatch coaming 1 or on the outer wall of the longitudinal hatch coaming 1; the reinforcing rib 4 is interrupted at the bending structure 11, and the bending structure 11 serves as the fulcrum of the reinforcing rib 4 and is fixedly connected to the reinforcing rib 4 (it can be welded), ensuring that the reinforcing rib 4 can still play the role of enhancing the strength of the longitudinal hatch coaming 1 in other parts.

[0074] Optionally, the number of horizontally arranged reinforcing ribs 4 is set according to the actual stress condition of the longitudinal hatch coaming 1.

[0075] Specifically, based on the basic data such as the geometric dimensions, material properties, and load conditions of the longitudinal hatch coaming 1, the actual stress condition of the longitudinal hatch coaming 1 can be analyzed, and the number of reinforcing ribs 4 can be set accordingly. In this way, while meeting the basic structural strength requirements, the structural design is simplified as much as possible, and excessive reinforcing ribs 4 can be avoided, which would lead to structural complexity and increased costs.

[0076] exist Figures 1a-1d In the illustrated embodiment, a curved structure 11 is provided at an appropriate position on the longitudinal hatch coaming 1. The horizontal reinforcing ribs 4 of the longitudinal hatch coaming 1 are interrupted at the curved structure 11 and welded to it. The upper end of the curved structure 11 is connected to the hatch coaming panel 2, and the lower end of the curved structure 11 is connected to the main deck. The cross-section of the curved structure 11 can be... Figure 1b and 1cThe oblong shape shown can also be other suitable shapes. The bending structure 11 has the ability to be stretched and deformed in the X-axis direction without damage. At the same time, the bending structure 11 can bear sufficient bending moment in the YZ plane. Thus, when the horizontal stiffener 4 of the longitudinal hatch coaming 1 is connected to the bending structure 11, the bending structure 11 can serve as a fulcrum for the horizontal stiffener 4 of the longitudinal hatch coaming 1, thereby enabling the horizontal stiffener 4 to support the longitudinal hatch coaming 1 and bear the force on the longitudinal hatch coaming 1 in the Y-axis direction. The hatch coaming panel 2 is provided with a bending panel 21 at the corresponding position of the bending structure 11. The bending panel 21 has the ability to be stretched and deformed in the X-axis direction without damage. At the same time, the bending panel 21 can withstand a large force in the Y direction. Thus, when the bending structure 11 is connected to the hatch coaming panel 2, the hatch coaming panel 2 can serve as a fulcrum for the bending structure 11, enabling the bending structure 11 to bear the force of the horizontal stiffener 4 in the Y direction.

[0077] In summary, the expansion connection device for the longitudinal hatch coaming 1 on the deck provided in this application maintains the continuity of the hatch coaming panel 2 by adopting an uninterrupted design, thereby avoiding a series of problems caused by the interruption of the hatch coaming panel 2 in the prior art. In this application, an expansion structure is provided at the position corresponding to the expansion structure of the longitudinal hatch coaming 1 on the hatch coaming panel 2, and the expansion structure on the hatch coaming panel 2 and the expansion structure on the longitudinal hatch coaming 1 are not welded together, ensuring that the deformation of the hull beam can be absorbed.

[0078] Unless otherwise defined, all technical and scientific terms used throughout this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. In case of any inconsistency, the meaning as stated in this application or derived from the content described herein shall prevail. Furthermore, the terminology used in this description is for the purpose of describing embodiments of this application only and is not intended to limit this application.

[0079] Note that the above are merely preferred embodiments and the technical principles employed in this application. Those skilled in the art will understand that this application is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of this application. Therefore, although this application has been described in detail through the above embodiments, this application is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the technical concept of this application, all of which fall within the scope of protection of this application.

[0080] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. An expansion joint for a deck longitudinal hatch coaming, characterized by, The application relates to a longitudinal hatch coaming arranged on a cargo hold on a ship deck. The longitudinal hatch coaming is longitudinally provided with a curved structure, the upper end of the curved structure is connected with a hatch coaming panel, and the lower end of the curved structure is connected with a main deck. The hatch coaming panel is arranged at the top end of the longitudinal hatch coaming, and a curved panel is arranged on the hatch coaming panel at the top of the curved structure. When the hatch coaming panel and the curved panel are a seamless continuous body, the distance from the starting point to the ending point of the curved panel is smaller than the distance from the starting point to the ending point of the curved structure.

2. An expansion joint arrangement for a deckhouse longitudinal hatch coaming according to claim 1, characterised in that, When the hatch coaming panel and the curved panel are a seamless continuous body, a reinforcing curved panel is arranged above the curved panel, and the distance from the starting point to the ending point of the reinforcing curved panel is larger than the distance from the starting point to the ending point of the curved panel.

3. The deck longitudinal hatch coaming inflation attachment of claim 1, wherein, When the hatch coaming panel and the curved panel are a continuous body through fixing, the horizontal discontinuous distance of the hatch coaming panel is smaller than the distance from the starting point to the ending point of the curved structure.

4. The deck longitudinal hatch coaming inflation attachment of claim 1, wherein, The distance from the starting point to the ending point of the curved panel is larger than the distance from the starting point to the ending point of the curved structure.

5. An expansion joint arrangement for a deckhouse longitudinal hatch coaming according to claim 4, characterised in that, The two ends of the hatch coaming panel on both sides of the discontinuous position are fixedly connected with the curved structure, and the two ends of the curved panel span the discontinuous position of the hatch coaming panel and are fixedly connected with the upper surface of the hatch coaming panel.

6. An expansion joint arrangement for a deckhouse longitudinal hatch coaming according to claim 5, characterised in that, The application further relates to the following:

7. The deck longitudinal hatch coaming expansion joint apparatus of claim 1, wherein, A reinforcing rib is horizontally arranged on the longitudinal hatch coaming, and the reinforcing rib is discontinuously arranged at the curved structure and fixedly connected with the curved structure at the curved structure. The number of the horizontally arranged reinforcing ribs is determined according to the actual stress condition of the longitudinal hatch coaming.

8. An expansion joint arrangement for a deckhouse longitudinal hatch coaming according to claim 7, characterised in that, The curved structure, the curved panel and the reinforcing curved panel adopt fairing structures.

9. The deck longitudinal hatch coaming expansion joint apparatus of claim 3, wherein, ​

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