A new type of fireproof collision nail structure for ship decks

Abstract

The present invention discloses a novel fireproof bump structure for a ship deck, which relates to the field of ship manufacturing. It includes a first fireproof board, a second fireproof board, a composite material deck, and a split-type bump connection assembly. Among them, the first fireproof board is laid on the upper surface of the composite material deck, and the first fireproof board and the composite material deck are connected through a multi-component split-type bump connection assembly; the second fireproof board is laid on the lower surface of the composite material deck, and the second fireproof board and the composite material deck are connected through a multi-component split-type bump connection assembly; the split-type bump connection assembly includes an upper bump, a middle bump, a lower bump, a first lining plate, and a second lining plate; the upper bump, the middle bump, and the lower bump are arranged in layers, and there is a gap in the radial direction. The present invention uses a novel bump connection method to connect multiple layers of materials, which can effectively block heat transfer, reduce the temperature on the backfire side, and improve the fireproof ability of the ship.

Description

Technical Field

[0001] The present invention relates to the field of shipbuilding, and particularly to a novel fireproof collision nail structure for a ship deck. Background Art

[0002] Currently, as an important part of the global transportation system, the transportation capacity of ship transportation still shows an increasing trend year by year. During long-term shipping, fire is a safety hazard that must be paid attention to in ship transportation. According to statistics, there are 5 maritime ship accidents every day in the world, among which ship fires account for about 11% of the total number of ship accidents. Due to the large number of enclosed spaces, complex structures, narrow channels and entrances and exits on ships, once a fire occurs, it is extremely easy to cause huge losses, with minor losses being damage to goods and major losses being injuries. This has greatly affected the healthy development of the international shipping industry and the maritime transportation industry, and has also seriously threatened the lives of the majority of crew members. Therefore, improving the fire prevention ability of the ship itself is an important means to effectively improve the safety performance of the ship.

[0003] The ship deck plays multiple roles during shipping. It not only has to bear a certain load, but also needs to remain stable under the high temperature conditions of a fire and not have fire leakage. Although the method of increasing the thickness of the fireproof layer can improve the fire prevention ability to a certain extent, it has a high cost and is difficult to be applied on a large scale. Due to the characteristics of light weight and low magnetism of composite materials, they have a very broad application prospect in ship components such as decks. However, different from the steel ship structure, the application of composite materials makes the original through-type metal collision nail structure difficult to meet the fire prevention requirements of the ship deck. If the temperature of the backfire surface of the deck can be reduced and the fire prevention ability can be improved through the structural design of the metal collision nail, it is an important way to improve the fire prevention ability of the ship deck.

[0004] Therefore, the technical personnel in this field are committed to developing a novel fireproof collision nail structure for a ship deck, which can replace the original "through-type" collision nail structure, and by reasonably distributing the layout form of the "shunt-type" integrated metal collision nail, while ensuring the connection stability, reduce and block heat transfer, ensure the fire prevention ability of the deck, and expand the application of composite materials in the fields of shipbuilding and the like. Summary of the Invention

[0005] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is how to achieve tight connection between multiple layers of materials while reducing heat transfer, lowering the temperature of the backfire surface of the deck, and improving the fire prevention performance.

[0006] To achieve the above object, the present invention provides a novel fireproof collision nail structure for a ship deck, which includes a first-layer fireproof board, a second-layer fireproof board, a composite material deck, and a shunt-type collision nail connection assembly. Among them, the first-layer fireproof board is laid on the upper surface of the composite material deck, and the first-layer fireproof board and the composite material deck are connected by multiple groups of the shunt-type collision nail connection assemblies; the second-layer fireproof board is laid on the lower surface of the composite material deck, and the second-layer fireproof board and the composite material deck are connected by multiple groups of the shunt-type collision nail connection assemblies; the shunt-type collision nail connection assembly includes an upper-layer collision nail, a middle-layer collision nail, a lower-layer collision nail, a first lining plate, and a second lining plate; the upper-layer collision nail, the middle-layer collision nail, and the lower-layer collision nail are arranged in layers, and there is an interval in the radial direction.

[0007] Further, the first-layer fireproof board includes an upper plate of the first-layer fireproof board and a lower plate of the first-layer fireproof board; the second-layer fireproof board includes an upper plate of the second-layer fireproof board and a lower plate of the second-layer fireproof board.

[0008] Further, the composite material deck includes a core board and composite material surface plates provided on both sides of the core board.

[0009] Further, the upper surface of the first lining plate is connected to one end of the upper-layer collision nail, the lower surface of the first lining plate is connected to one end of the middle-layer collision nail, the upper surface of the second lining plate is connected to the other end of the middle-layer collision nail, and the lower surface of the second lining plate is connected to one end of the lower-layer collision nail; there are 2 lower-layer collision nails.

[0010] Further, the connection between the first-layer fireproof board and the composite material deck by multiple groups of the shunt-type collision nail connection assemblies includes: the upper-layer collision nail penetrates through the upper plate of the first-layer fireproof board; the middle-layer collision nail penetrates through the lower plate of the first-layer fireproof board; the lower-layer collision nail is inserted into the composite material deck with equal length.

[0011] Further, the connection between the second-layer fireproof board and the composite material deck by multiple groups of the shunt-type collision nail connection assemblies includes: the upper-layer collision nail penetrates through the upper plate of the second-layer fireproof board; the middle-layer collision nail penetrates through the lower plate of the second-layer fireproof board; the lower-layer collision nail is inserted into the composite material deck with equal length.

[0012] Further, the length of the lower-layer collision nail inserted into the composite material deck with equal length is 13 mm.

[0013] Further, the upper plate of the first-layer fireproof board, the lower plate of the first-layer fireproof board, the upper plate of the second-layer fireproof board, and the lower plate of the second-layer fireproof board are laid as a whole board or spliced by several strip-shaped boards.

[0014] Further, the material of the surface layer board of the composite material is carbon fiber or glass fiber.

[0015] Further, the materials of the first fireproof board and the second fireproof board are polycrystalline mullite fiber material boards, foams or plastics.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects:

[0017] 1. The novel ship deck fireproof stud structure provided by the present invention adopts a novel stud connection method for connecting multi-layer materials, which can effectively block heat transfer, reduce the temperature on the backfire side, and improve the fireproof ability of the ship.

[0018] 2. The novel ship deck fireproof stud structure provided by the present invention adopts a reasonable layout method, reduces the direct contact area between the metal and the heat source, improves the universality of the design, and achieves the goal of low cost.

[0019] The following will further illustrate the concept, specific structure and technical effects generated by the present invention with reference to the accompanying drawings, so as to fully understand the purpose, features and effects of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the overall structure diagram of the deck fireproof structure of a preferred embodiment of the present invention;

[0021] Figure 2 is the front view schematic diagram of the deck fireproof structure of a preferred embodiment of the present invention;

[0022] Figure 3 is the split-flow stud connection component diagram of a preferred embodiment of the present invention;

[0023] Figure 4 is the relative position schematic diagram of the splicing seam of the fireproof board of a preferred embodiment of the present invention;

[0024] Figure 5 is the stud distribution diagram of a preferred embodiment of the present invention;

[0025] Figure 6 is the specific implementation steps of a preferred embodiment of the present invention.

[0026] Wherein, 1 - the first fireproof board, 10 - the upper board of the first fireproof board, 11 - the lower board of the first fireproof board, 2 - the second fireproof board, 20 - the upper board of the second fireproof board, 21 - the lower board of the second fireproof board, 3 - the composite material deck, 30 - the core board, 31 - the carbon fiber composite material surface layer board, 4 - the split-flow stud connection component, 40 - the stud, 41 - the lining board, 5 - the spacing, 6 - the splicing seam. DETAILED DESCRIPTION OF THE INVENTION

[0027] The following describes several preferred embodiments of the present invention with reference to the accompanying drawings of the specification to make its technical content clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, and the protection scope of the present invention is not limited to the embodiments mentioned in the text.

[0028] In the drawings, components with the same structure are denoted by the same numeral labels, and components with similar structures or functions everywhere are denoted by similar numeral labels. The size and thickness of each component shown in the drawings are arbitrarily shown, and the present invention does not limit the size and thickness of each component. To make the illustration clearer, the thickness of some components in the drawings is appropriately exaggerated.

[0029] As Figure 1 shown, it is an overall structural diagram of a deck fireproof structure of a preferred embodiment of the present invention, including a first-layer fireproof board 1, a second-layer fireproof board 2, and a composite material deck 3. The composite material deck 3 includes a core board 30 and a carbon fiber composite surface board 31. The carbon fiber composite surface board 31 and the core board 30 are tightly connected through a split rivet connection assembly 4. The carbon fiber composite surface board 31 is a thermosetting resin-based carbon fiber composite board. The carbon fiber composite surface board 31 covers both sides of the core board 30, blocking the direct contact between the flame and the core board 30, avoiding damage to the deck matrix, and stabilizing the load-bearing capacity and fireproof ability of the deck.

[0030] As Figure 2 shown, the first-layer fireproof board 1 includes a first-layer fireproof board upper layer 10 and a first-layer fireproof board lower layer 11, and the second-layer fireproof board 2 includes a second-layer fireproof board upper layer 20 and a second-layer fireproof board lower layer 21.

[0031] The first-layer fireproof board upper layer 10, the first-layer fireproof board lower layer 11, the second-layer fireproof board upper layer 20, and the second-layer fireproof board lower layer 21 are all polycrystalline mullite fiber material boards, providing a relatively low thermal conductivity and density at the same time, so that the whole has good fireproof performance and quality attributes.

[0032] As Figure 3As shown in the figure, a shunt rivet connection assembly 4 is used for fastening connection between the first-layer fireproof board 1, the second-layer fireproof board 2 and the composite material deck 3. The shunt rivet connection assembly 4 includes a rivet 40 and a lining plate 41. The shunt rivet connection assembly 4 is a layered structure and is divided into 3 layers as a whole. The rivet 40 and the lining plate 41 are also arranged in layers in the shunt rivet connection assembly 4. In the layered structure of the shunt rivet connection assembly 4, the upper-layer rivet penetrates the upper plate 10 of the first-layer fireproof board, the middle-layer rivet penetrates the lower plate 11 of the first-layer fireproof board, and there are two lower-layer rivets, which are inserted into the composite material deck 3 with equal length, and the length is 13 mm. In the second-layer fireproof board 2, the shunt rivet connection assembly 4 is arranged in a mirror image distribution with that in the first-layer fireproof board 1. In the composite material deck 3, the upper and lower inserted rivets cannot be in contact, and there needs to be a certain distance in space to block the direct transfer of heat through the metal.

[0033] The rivet 40 is arranged in layers in the shunt rivet connection assembly 4. In the layered arrangement, when the rivet 40 is distributed between different layers, there is a spacing 5 between them in the radial direction of the rivet, and the spacing 5 is 25 mm. The existence of the spacing 5 hinders the heat transfer in the axial direction of the rivet. Even if the rivet directly contacts the heat source on the fire-facing surface, the heat will not directly transfer deep through the high thermal conductivity material such as the rivet metal, effectively reducing the temperature and improving the fireproof performance.

[0034] As Figure 4 shown, both the first-layer fireproof board 1 and the second-layer fireproof board 2 are composed of a number of strip-shaped boards spliced together. When the strip-shaped boards are spliced, a splicing seam 6 is formed. When the upper plate 10 of the first-layer fireproof board and the lower plate 11 of the first-layer fireproof board are connected, and the upper plate 20 of the second-layer fireproof board and the lower plate 21 of the second-layer fireproof board are connected, the splicing seams are staggered by 100 mm, so that the flame will not directly burn to the composite material deck 3 through the splicing seam, blocking the heat transfer.

[0035] Optionally, the upper plate 10 of the first-layer fireproof board, the lower plate 11 of the first-layer fireproof board, the upper plate 20 of the second-layer fireproof board, and the lower plate 21 of the second-layer fireproof board are laid flat with a whole board.

[0036] As Figure 5 shown, it is the rivet distribution diagram of this embodiment.

[0037] As Figure 6 shown, it is the specific implementation steps of this embodiment, as follows:

[0038] Step 1: Lay the bottom first-layer 20-mm fireproof material layer, that is, the upper plate 20 of the second-layer fireproof board;

[0039] Step 2: Lay the new type of integrated rivets according to the design dimensions;

[0040] Step 3: Stitch and lay the 30-mm fireproof material layer at the bottom, i.e., the lower layer board 21 of the second-layer fireproof board;

[0041] Step 4: Prefabricate and lay the carbon fiber composite deck according to the design, and fix the shaped deck with blind rivets;

[0042] Step 5: On the basis of the deck, lay the 30-mm and 20-mm fireproof material layers in sequence, i.e., the lower layer board 11 of the first-layer fireproof board and the upper layer board 10 of the first-layer fireproof board.

[0043] Optionally, the number of layers of the fireproof board includes but is not limited to a two-layer structure of the upper layer board and the lower layer board.

[0044] Optionally, the structural material of the fireproof board includes but is not limited to polycrystalline mullite fiber material board, foam, plastic and other materials.

[0045] Optionally, the composite material board includes but is not limited to carbon fiber, glass fiber and the like.

[0046] The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations according to the concept of the present invention without creative work. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field based on the concept of the present invention through logical analysis, reasoning or limited experiments on the basis of the prior art should be within the protection scope determined by the claims.

Claims

1. A novel fireproof rivet structure for ship decks, characterized in that, it includes a first-layer fireproof board, a second-layer fireproof board, a composite material deck, and a shunt-type rivet connection assembly. Among them, the first-layer fireproof board is laid on the upper surface of the composite material deck, and the first-layer fireproof board and the composite material deck are connected by multiple groups of the shunt-type rivet connection assembly; the second-layer fireproof board is laid on the lower surface of the composite material deck, and the second-layer fireproof board and the composite material deck are connected by multiple groups of the shunt-type rivet connection assembly; the shunt-type rivet connection assembly includes an upper-layer rivet, a middle-layer rivet, a lower-layer rivet, a first lining plate, and a second lining plate; the upper-layer rivet, the middle-layer rivet, and the lower-layer rivet are arranged in layers, and there is a gap in the radial direction; the upper surface of the first lining plate is connected to one end of the upper-layer rivet, the lower surface of the first lining plate is connected to one end of the middle-layer rivet, the upper surface of the second lining plate is connected to the other end of the middle-layer rivet, and the lower surface of the second lining plate is connected to one end of the lower-layer rivet; there are 2 lower-layer rivets; the first-layer fireproof board includes an upper plate of the first-layer fireproof board and a lower plate of the first-layer fireproof board; the second-layer fireproof board includes an upper plate of the second-layer fireproof board and a lower plate of the second-layer fireproof board; the connection between the first-layer fireproof board and the composite material deck by multiple groups of the shunt-type rivet connection assembly includes: the upper-layer rivet penetrates through the upper plate of the first-layer fireproof board; the middle-layer rivet penetrates through the lower plate of the first-layer fireproof board; the lower-layer rivets are inserted into the composite material deck with equal length.

2. The novel fireproof rivet structure for ship decks according to claim 1, characterized in that, the composite material deck includes a core board and composite material surface plates arranged on both sides of the core board.

3. The novel fireproof rivet structure for ship decks according to claim 1, characterized in that, the connection between the second-layer fireproof board and the composite material deck by multiple groups of the shunt-type rivet connection assembly includes: the upper-layer rivet penetrates through the upper plate of the second-layer fireproof board; the middle-layer rivet penetrates through the lower plate of the second-layer fireproof board; the lower-layer rivets are inserted into the composite material deck with equal length.

4. The novel fireproof rivet structure for ship decks according to claim 3, characterized in that, the length of the lower-layer rivets inserted into the composite material deck with equal length is 13 mm.

5. The novel fireproof rivet structure for ship decks according to claim 1, characterized in that, the upper plate of the first-layer fireproof board, the lower plate of the first-layer fireproof board, the upper plate of the second-layer fireproof board, and the lower plate of the second-layer fireproof board are formed by laying a whole board flat or splicing by several strip-shaped boards.

6. The novel fireproof rivet structure for ship decks according to claim 2, characterized in that, the material of the composite material surface plate is carbon fiber or glass fiber.

7. The novel fireproof rivet structure for ship decks according to claim 1, characterized in that, the materials of the first-layer fireproof board and the second-layer fireproof board are polycrystalline mullite fiber material boards, foams or plastics.

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