Marine composite vertical ladder and assembly method thereof

Abstract

The invention belongs to the technical field of ships, and provides a marine composite material vertical ladder and an assembly method thereof, the marine composite material vertical ladder comprises a ladder assembly, the ladder assembly is made of a composite material; the two sets of connecting assemblies are made of metal materials, the two sets of connecting assemblies are arranged at the top and the bottom of the ladder assembly respectively, and the two sets of connecting assemblies are used for fixedly connecting the ladder assembly to a ship body; the plurality of steps are made of a composite material, and the two ends of the plurality of steps are respectively adhered to the ladder assembly. The structural stability of the vertical ladder for the ship can be effectively improved, the weight of the vertical ladder is reduced, and the corrosion resistance of the vertical ladder is enhanced.

Description

Technical Field

[0001] The invention belongs to the technical field of ships, and in particular relates to a ship-used composite material straight ladder and an assembly method thereof. Background Art

[0002] Marine ladder is a widely used equipment in the field of marine ships. It is the main passage between the decks on the ship. Traditional ladders are mainly made of metal, and the most commonly used are steel ladders and aluminum ladders. Steel ladders are heavy and easy to rust and corrode. Hot-dip galvanizing can improve the anti-corrosion performance, but the surface finish and aesthetics are difficult to improve. Aluminum ladders are light, strong and rigid. Therefore, domestic and foreign ships tend to use aluminum ladders. However, aluminum alloys are easy to damage due to their low hardness, especially in outdoor environments. The damage needs to be repaired in time. In addition, the surface of aluminum alloys is very easy to oxidize. When exposed to the air, a layer of oxide film will quickly form on the surface. In order to protect the metal surface, anodizing treatment is usually required. However, this treatment method is not only complicated in process, but also the treated metal is significantly affected by the size of the plating tank, which is difficult to apply on site or in the field. At the same time, the assembly method of metal ladders mostly adopts welding. Although it can improve the strength of the ladder, welding is likely to cause a decrease in corrosion resistance. Therefore, it is of great significance to improve the strength and corrosion resistance of marine ladders. Summary of the invention

[0003] The object of the present invention is to provide a composite ship ladder and an assembly method thereof to solve the above problems, thereby improving the structural stability of the ship ladder, reducing the weight of the ladder, and enhancing the corrosion resistance of the ladder.

[0004] To achieve the above object, the present invention provides the following solution: a composite material vertical ladder for a ship, comprising:

[0005] A ladder frame assembly, wherein the ladder frame assembly is made of composite material;

[0006] Two groups of connection components, the two groups of connection components are made of metal materials, and the two groups of connection components are respectively arranged at the top and bottom of the ladder frame assembly, and the two groups of connection components are used to fix the ladder frame assembly to the hull;

[0007] A plurality of steps are provided, wherein the plurality of steps are made of composite materials, and two ends of the plurality of steps are respectively bonded to the ladder frame assembly.

[0008] Preferably, the ladder frame assembly comprises a left ladder frame and a right ladder frame, the left ladder frame and the right ladder frame are arranged in parallel, and two ends of a plurality of the steps are respectively bonded to the side walls of the left ladder frame and the right ladder frame.

[0009] Preferably, insertion holes are provided at equal intervals on the side walls of the left ladder frame and the right ladder frame, and the ends of the steps are bonded in the insertion holes.

[0010] Preferably, the connecting assembly at the top of the ladder frame assembly includes two groups of ladder frame sleeves, and the two groups of ladder frame sleeves are respectively sleeved on the top of the left ladder frame and the right ladder frame, and the ladder frame sleeves are bonded to the left ladder frame or the right ladder frame by structural adhesive, and one end of the fixed eye plate is hinged on the side of the sleeve away from the ladder frame assembly, and the other end of the fixed eye plate is fixedly connected to the hull.

[0011] Preferably, through holes are respectively provided at both ends of the left ladder frame and the right ladder frame, connecting holes are respectively provided on two opposite side walls of the ladder frame sleeve, and steel pins are bonded between the through holes and the connecting holes.

[0012] A method for assembling a composite material vertical ladder for a ship, the operating steps comprising:

[0013] The two ends of a plurality of steps are respectively bonded to the left ladder frame and the right ladder frame, and the steps are cured after secondary wrapping so as to be cured together with the left ladder frame and the right ladder frame;

[0014] The ladder frame sleeve is fixedly connected to both ends of the left ladder frame and the right ladder frame.

[0015] Preferably, before the steps are respectively bonded to the left ladder frame and the right ladder frame, and then cured by secondary wrapping to solidify the steps and the left and right ladder frames, the method further includes:

[0016] A left ladder frame, a right ladder frame and a plurality of steps are made of composite materials.

[0017] Preferably, the composite material is glass fiber prepreg or carbon fiber prepreg;

[0018] The resin contained in the prepreg is epoxy resin or phenolic resin.

[0019] Preferably, the step of using composite materials to make the left ladder frame, the right ladder frame and the plurality of steps comprises:

[0020] The left ladder frame, the right ladder frame and the step are all formed by a molding process, and foam cores are arranged inside the left ladder frame, the right ladder frame and the step.

[0021] Compared with the prior art, the present invention has the following advantages and technical effects: On the whole, the composite material ladder of the present invention can effectively improve the structural stability of the ladder, enhance the strength of the ladder, reduce the weight of the ladder, and improve the corrosion resistance of the ladder. At the same time, the use of metal sleeves and metal fixing eye plates is beneficial to increase the safety of the connection between the ladder structure and the hull, improve the reliability of the ladder, and can meet the use requirements of various types of ships for ladders. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the assembly of the vertical ladder of the present invention;

[0024] Figure 2 It is a schematic diagram of the connection between the ladder frame assembly and the steps of the present invention;

[0025] Figure 3 is a schematic diagram of a connection assembly of the present invention;

[0026] Among them, 1. Ladder frame assembly; 2. Steps; 3. Ladder frame sleeve; 4. Fixed eye plate; 5. Hexagonal bolt; 6. Flat washer; 7. Spring washer; 8. Cap nut; 9. Steel pin; 11. Left ladder frame; 12. Right ladder frame. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Reference Figure 1-Figure 3 The present invention provides a composite material vertical ladder for ships, comprising:

[0030] The ladder frame assembly 1 is made of composite material;

[0031] Two sets of connection components, the two sets of connection components are made of metal materials, and the two sets of connection components are respectively arranged at the top and bottom of the ladder frame component 1, and the two sets of connection components are used to fix the ladder frame component 1 to the hull;

[0032] A plurality of steps 2 are made of composite materials, and two ends of the plurality of steps 2 are respectively bonded to the ladder frame assembly 1.

[0033] The ladder frame assembly 1 and the step 2 are made of composite materials. The composite materials have the advantages of low density, corrosion resistance, fatigue resistance, etc. At the same time, they solve the problem that the traditional straight ladder is mainly made of metal, which is easy to corrode, and the corrosion resistance treatment will add additional processes. It can effectively reduce the weight of the straight ladder, improve the corrosion resistance of the straight ladder, enhance the wear resistance of the straight ladder, and increase the service life of the straight ladder; the step 2 is fixedly connected to the ladder frame assembly 1 by bonding, avoiding the problem of reduced corrosion resistance caused by welding of traditional metal straight ladders; the main function of the connecting assembly is to fix the composite material straight ladder to the hull. On the whole, the composite material straight ladder of the present invention can effectively improve the structural stability of the straight ladder, enhance the strength of the straight ladder, reduce the weight of the straight ladder, and improve the corrosion resistance of the straight ladder. At the same time, the use of metal connecting components is conducive to increasing the safety of the connection between the straight ladder structure and the hull, improving the reliability of the straight ladder, and meeting the use requirements of various types of ships for the straight ladder.

[0034] According to a further optimized solution, the ladder frame assembly 1 includes a left ladder frame 11 and a right ladder frame 12 . The left ladder frame 11 and the right ladder frame 12 are arranged in parallel, and two ends of a plurality of steps 2 are respectively bonded to the side walls of the left ladder frame 11 and the right ladder frame 12 .

[0035] According to a further optimized solution, insertion holes are provided at equal intervals on the side walls of the left ladder frame 11 and the right ladder frame 12, and the ends of the steps 2 are bonded into the insertion holes.

[0036] The left ladder frame 11, the right ladder frame 12 and the step 2 are connected by gluing, and the structural adhesive used is J133-C.

[0037] A further optimized solution is that the connecting assembly at the top of the ladder frame assembly 1 includes two groups of ladder frame sleeves 3, and the two groups of ladder frame sleeves 3 are respectively sleeved on the top of the left ladder frame 11 and the right ladder frame 12, and the ladder frame sleeves 3 are bonded to the left ladder frame 11 or the right ladder frame 12 by structural adhesive, and one end of the fixed eye plate 4 is hinged on the side of the ladder frame sleeve 3 away from the ladder frame assembly 1, and the other end of the fixed eye plate 4 is fixedly connected to the hull.

[0038] To further optimize the solution, the ladder frame sleeve 3 and the fixed eye plate 4 are made of stainless steel 304 or stainless steel 316, which can meet the anti-corrosion performance of metal materials.

[0039] To further optimize the solution, a connecting plate is fixedly connected to the side wall of the ladder frame sleeve 3, and the connecting plate and the fixed eye plate 4 are hingedly connected by a hexagonal bolt 5. At the same time, the hexagonal bolt 5 is used in conjunction with a flat washer 6, a spring washer 7 and a cap nut 8 to ensure a reliable connection between the ladder frame sleeve 3 and the fixed eye plate 4.

[0040] To further optimize the solution, the hexagonal bolt 5, flat washer 6, spring washer 7 and cap nut 8 are made of stainless steel 304 or stainless steel 316, which can meet the anti-corrosion performance of metal materials.

[0041] A further optimization scheme is to set a fixed eye plate 4, fix the fixed eye plate 4 at the use position on the ship by welding technology, and connect it to the ladder frame assembly 1 through the ladder frame sleeve 3, which can effectively improve the structural stability of the ship's straight ladder and improve the reliability of the straight ladder.

[0042] According to a further optimization scheme, through holes are respectively provided at both ends of the left ladder frame 11 and the right ladder frame 12, connecting holes are respectively provided on two opposite side walls of the ladder frame sleeve 3, and steel pins 9 are bonded between the through holes and the connecting holes.

[0043] The ladder frame sleeve 3 and the ladder frame assembly 1 are glued together with structural adhesive. After the structural adhesive is cured, the ladder frame sleeve 3 and the ladder frame assembly 1 are fixed together with two steel pins 9, so that the entire ladder frame structure is an integral structure, which improves the strength of the ladder frame and increases the stability and reliability of the straight ladder.

[0044] A method for assembling a composite material vertical ladder for a ship, the operating steps comprising:

[0045] The left ladder frame 11, the right ladder frame 12 and the plurality of steps 2 are made of composite materials;

[0046] The left ladder frame 11, the right ladder frame 12 and the step 2 are strictly carried out in accordance with the composite material parts preparation and manufacturing outline, and the temperature and pressure are well controlled to manufacture qualified composite material parts.

[0047] At the same time, metal parts such as the ladder frame sleeve 3, the fixed eye plate 4 and the steel pin 9 are manufactured.

[0048] Before assembly, the left ladder frame 11 and the right ladder frame 12 need to be polished and cleaned with 400# sandpaper and acetone, and the polished area is the position wrapped by the ladder frame sleeve 3.

[0049] The two ends of a plurality of steps 2 are respectively bonded to the left ladder frame 11 and the right ladder frame 12, and the steps 2 are cured together with the left ladder frame 11 and the right ladder frame 12 by wrapping the steps 2 with cloth for the second time;

[0050] During assembly, one end of the plurality of steps 2 is respectively inserted into the plurality of insertion holes of the left ladder frame 11, and then the right ladder frame 12 is connected to the ends of the plurality of steps 2 away from the left ladder frame 11 through the plurality of insertion holes on the right ladder frame 12. During the plug-in process, the assembly process of bonding is realized by structural adhesive, and after the structural adhesive is cured, the left ladder frame 11, the right ladder frame 12 and the step 2 are subjected to secondary cloth wrapping treatment, and the left ladder frame 11, the right ladder frame 12 and the step 2 are co-cured to form a whole through a vacuum curing process.

[0051] The ladder frame sleeve 3 is fixedly connected to both ends of the left ladder frame 11 and the right ladder frame 12;

[0052] By applying structural adhesive to both ends of the left ladder frame 11 and the right ladder frame 12, and sleeve the ladder frame sleeve 3 on both ends of the left ladder frame 11 and the right ladder frame 12, the adhesive connection between the ladder frame sleeve 3 and the ladder frame assembly 1 is achieved. After the structural adhesive is cured, the ladder frame sleeve 3 and the ladder frame assembly 1 are fixed together by two steel pins 9 to improve the connection reliability between the ladder frame assembly 1 and the ladder frame sleeve 3. The ladder frame sleeve 3 and the fixed eye plate 4 are fixed together by hexagonal bolts 5, flat washers 6, spring washers 7 and cap nuts 8.

[0053] After assembly, it is painted.

[0054] After assembly, the entire composite material ladder is sprayed with paint. The places that are not to be painted are isolated by the isolation method. The primer and topcoat are sprayed according to the method and proportion in the technical instructions of the selected paint. The spraying is uniform and complete without leakage. After painting, it is dried.

[0055] On the whole, the above-mentioned assembly method can effectively improve the stability of the ladder structure, and at the same time, enhance the aesthetics of the ladder. The use of composite materials can greatly reduce the mass of the ladder and improve the specific strength of the ladder material. The tensile strength of the composite material exceeds that of metal materials and is corrosion-resistant, which can effectively reduce the cost of the ladder.

[0056] To further optimize the solution, glass fiber prepreg or carbon fiber prepreg is used as the composite material;

[0057] The resin contained in the prepreg is epoxy resin or phenolic resin.

[0058] Among them, the resin adopts epoxy resin or phenolic resin, which can effectively improve the strength of the composite material parts.

[0059] According to a further optimization scheme, the left ladder frame 11 , the right ladder frame 12 and the step 2 are all formed by a molding process, and foam cores are arranged inside the left ladder frame 11 , the right ladder frame 12 and the step 2 .

[0060] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0061] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A composite material vertical ladder for ships, characterized in that: include: Ladder frame assembly (1), the ladder frame assembly (1) is made of composite material Two groups of connection components, the two groups of connection components are made of metal material, and the two groups of connection components are respectively arranged at the top and bottom of the ladder frame component (1), and the two groups of connection components are used to fix the ladder frame component (1) to the hull; A plurality of steps (2), wherein the plurality of steps (2) are made of composite materials, and both ends of the plurality of steps (2) are respectively bonded to the ladder frame assembly (1).

2. A composite material vertical ladder for ships according to claim 1, characterized in that: The ladder frame assembly (1) comprises a left ladder frame (11) and a right ladder frame (12), wherein the left ladder frame (11) and the right ladder frame (12) are arranged in parallel, and the two ends of the plurality of steps (2) are respectively bonded to the side walls of the left ladder frame (11) and the right ladder frame (12).

3. A composite material vertical ladder for ships according to claim 2, characterized in that: Insertion holes are evenly spaced apart on the side walls of the left ladder frame (11) and the right ladder frame (12), and the ends of the steps (2) are bonded into the insertion holes.

4. A composite material vertical ladder for ships according to claim 2, characterized in that: The connection assembly at the top of the ladder frame assembly (1) comprises two groups of ladder frame sleeves (3), which are respectively sleeved on the top of the left ladder frame (11) and the right ladder frame (12), and the ladder frame sleeves (3) are bonded to the left ladder frame (11) or the right ladder frame (12) by structural adhesive, and one end of a fixed eye plate (4) is hingedly connected to the side of the sleeve (3) away from the ladder frame assembly (1), and the other end of the fixed eye plate (4) is fixedly connected to the hull.

5. A composite material vertical ladder for ships according to claim 4, characterized in that: Through holes are respectively provided at both ends of the left ladder frame (11) and the right ladder frame (12), and connecting holes are respectively provided on two opposite side walls of the ladder frame sleeve (3), and steel pins (9) are bonded between the through holes and the connecting holes.

6. A method for assembling a composite material vertical ladder for a ship, based on the composite material vertical ladder for a ship according to claim 5, characterized in that: The steps include: The two ends of a plurality of steps (2) are respectively bonded to the left ladder frame (11) and the right ladder frame (12), and then cured by secondary wrapping, so that the steps (2) and the left ladder frame (11) and the right ladder frame (12) are cured together; The ladder frame sleeve (3) is fixedly connected to the two ends of the left ladder frame (11) and the right ladder frame (12).

7. The method for assembling a composite material vertical ladder for a ship according to claim 6, characterized in that: Before the two ends of the plurality of steps (2) are respectively bonded to the left ladder frame (11) and the right ladder frame (12), and the steps (2) are cured together with the left ladder frame (11) and the right ladder frame (12) by secondary wrapping and curing, the method further comprises: A left ladder frame (11), a right ladder frame (12) and a plurality of steps (2) are made of composite materials.

8. The method for assembling a composite material vertical ladder for a ship according to claim 7, characterized in that: The composite material is glass fiber prepreg or carbon fiber prepreg; The resin contained in the prepreg is epoxy resin or phenolic resin.

9. The method for assembling a composite material vertical ladder for a ship according to claim 7, characterized in that: The steps of using composite materials to manufacture the left ladder frame (11), the right ladder frame (12) and the plurality of steps (2) include: The left ladder frame (11), the right ladder frame (12) and the step (2) are all formed by a molding process, and foam cores are arranged inside the left ladder frame (11), the right ladder frame (12) and the step (2).

Images