Composite material floor and rail vehicle

Abstract

The application discloses a composite material floor and a railway vehicle, and relates to the technical field of railway vehicles. The composite material floor comprises an upper skin, a lower skin and a reinforcing rib arranged between the upper skin and the lower skin, one end of the reinforcing rib is connected with the upper skin, and the other end of the reinforcing rib is connected with the lower skin; a weight-reducing material is filled between the upper skin and the lower skin; and at least one of the upper skin, the lower skin and the reinforcing rib is made of carbon fiber material. Compared with the metal material in the prior art, the composite material floor can effectively reduce weight, the overall floor structure is reduced by more than 35% compared with a stainless steel structure, and the energy consumption of train operation is effectively reduced. In addition, the composite material floor is made of carbon fiber material, so that the welding amount can be effectively reduced, deformation in the welding process can be avoided, the precision of the product is improved, the adjustment and repair operation in the subsequent process is reduced, and the work efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of rail vehicle technology, and more specifically, to a composite material floor. Furthermore, this invention also relates to a rail vehicle comprising the aforementioned composite material floor. Background Technology

[0002] Currently, with the continuous improvement of rail transit train speed levels, the demand for new lightweight materials in rail transit equipment is becoming increasingly urgent in order to better reduce energy consumption.

[0003] In the existing technology, the floor of rail vehicles is generally made of metal. The metal floor of the vehicle body is welded, which involves many parts, a large amount of welding, large welding deformation, and low work efficiency. At the same time, the metal floor is heavy, which affects the energy consumption of the whole vehicle.

[0004] In conclusion, how to provide a floor that can effectively reduce vehicle energy consumption is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a composite material floor that can effectively reduce the weight of the floor. The overall floor structure is more than 35% lighter than the stainless steel structure, which can effectively reduce the energy consumption of train operation.

[0006] Another object of the present invention is to provide a rail vehicle comprising the aforementioned composite material floor.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A composite material floor includes an upper skin, a lower skin, and a reinforcing rib disposed between the upper skin and the lower skin, wherein one end of the reinforcing rib is connected to the upper skin and the other end is connected to the lower skin;

[0009] The space between the upper skin and the lower skin is filled with a weight-reducing material; at least one of the upper skin, the lower skin, and the reinforcing rib is made of carbon fiber.

[0010] Optionally, it also includes a first floor body, the outer surface of the upper skin is provided with a mounting recess, the cross-section of the mounting recess is an inverted trapezoidal structure, the mounting recess is used to provide a first mounting seat, the first mounting seat is used to fix an adjacent first floor body, and the first floor body is located at a protruding position between adjacent mounting recesses.

[0011] Optionally, the first mounting base has a U-shaped structure, and a first rubber buffer pad is provided between the first mounting base and the first floor body;

[0012] And / or, the first mounting base and the upper skin are an integral structure.

[0013] Optionally, it also includes a second floor body, the outer surface of the upper skin is provided with a mounting protrusion, the mounting protrusion is used to provide a second mounting seat, the second mounting seat is used to fix an adjacent second floor body, and the second floor body is disposed in a recessed position between adjacent mounting protrusions.

[0014] Optionally, a threading space for the wire harness to pass through and a fixing bracket for fixing the wire harness are provided between the second floor body and the upper skin.

[0015] Optionally, the second mounting base is a U-shaped structure, and a second rubber buffer pad is provided between the second mounting base and the second floor body;

[0016] And / or, the second mounting base and the upper skin are an integral structure.

[0017] Optionally, the weight-reducing material is weight-reducing foam, weight-reducing honeycomb, or weight-reducing plastic.

[0018] Optionally, the reinforcing ribs are inclinedly arranged in the space between the upper skin and the lower skin, and the cross-section of the space between adjacent reinforcing ribs is a trapezoidal structure or an inverted trapezoidal structure.

[0019] Optionally, the bottom surface of the lower skin and the upper surface of the upper skin are both provided with a fire-retardant coating;

[0020] The space enclosed by the upper skin and the lower skin is provided with a sound-insulating filler. The reinforcing rib divides the space enclosed by the upper skin and the lower skin into multiple independent filling spaces. One of the adjacent filling spaces is filled with the weight-reducing material, and the other of the adjacent filling spaces is filled with the sound-insulating filler.

[0021] An insulating coating is provided on the inner surface of the upper skin, the outer surface of the upper skin, the inner surface of the lower skin, and the outer surface of the lower skin.

[0022] An insulating coating is provided on the inner surface of the upper skin, the outer surface of the upper skin, the inner surface of the lower skin, and the outer surface of the lower skin.

[0023] The upper surface of the upper skin is provided with a first temperature detection element, and the lower surface of the lower skin is provided with a second temperature detection element.

[0024] The upper surface of the upper skin is provided with a distance detection element for detecting the distance between the upper floor body and the upper skin.

[0025] A rail vehicle comprising the composite material floor described in any of the preceding claims.

[0026] The present invention provides a composite material floor, including an upper skin, a lower skin, and a reinforcing rib disposed between the upper skin and the lower skin, one end of the reinforcing rib being connected to the upper skin and the other end being connected to the lower skin; a weight-reducing material is filled between the upper skin and the lower skin; at least one of the upper skin, the lower skin, and the reinforcing rib is made of carbon fiber.

[0027] In practical use, the upper surface of the upper skin in this invention can be used to install wooden flooring. Compared with the metal base plate in the prior art, the composite material flooring provided by this invention has the following advantages:

[0028] Beneficial effects:

[0029] 1. In the composite material floor of the present invention, at least one of the upper skin, lower skin and reinforcing rib is made of carbon fiber. Compared with the metal material in the prior art, it can effectively reduce weight. The overall floor structure is more than 35% lighter than the stainless steel structure, which effectively reduces the energy consumption of train operation.

[0030] 2. In the actual assembly process, metal base plates need to be connected by welding. The composite material floor in this invention is made of carbon fiber, which can effectively reduce the amount of welding, avoid deformation during the welding process, thereby improving the precision of the parts, reducing the adjustment work in the later process, and improving work efficiency.

[0031] 3. In this invention, a reinforcing rib is provided between the upper skin and the lower skin, which can effectively ensure the structural strength of the composite material floor.

[0032] 4. In this invention, a weight-reducing material is filled between the upper skin and the lower skin, which can further reduce the weight and improve the sound insulation effect.

[0033] In addition, the present invention also provides a rail vehicle comprising the aforementioned composite material floor. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of a specific embodiment of the composite material flooring provided by the present invention;

[0036] Figure 2This is a schematic diagram of the structure of the upper and lower skin components in the composite material flooring provided by the present invention;

[0037] Figure 3 for Figure 2 A magnified view of a portion of the central structure.

[0038] Figures 1-3 middle:

[0039] 1 is the upper skin, 2 is the lower skin, 3 is the reinforcing rib, 4 is the weight-reducing material, 5 is the mounting recess, 6 is the mounting protrusion, 7 is the first mounting base, and 8 is the first floor body. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] The core of this invention is to provide a composite material floor that can effectively reduce the weight of the floor. The overall floor structure is more than 35% lighter than the stainless steel structure, which effectively reduces the energy consumption of train operation.

[0042] Another core aspect of this invention is to provide a rail vehicle comprising the aforementioned composite material floor.

[0043] Please refer to Figures 1 to 3 .

[0044] This specific embodiment discloses a composite material floor, including an upper skin 1, a lower skin 2, and a reinforcing rib 3 disposed between the upper skin 1 and the lower skin 2. One end of the reinforcing rib 3 is connected to the upper skin 1, and the other end is connected to the lower skin 2. A weight-reducing material 4 is filled between the upper skin 1 and the lower skin 2. At least one of the upper skin 1, the lower skin 2, and the reinforcing rib 3 is made of carbon fiber.

[0045] It should be noted that the upper surface of the upper skin 1 in this specific embodiment can be used to install wooden flooring, and the structure composed of the upper skin 1, the lower skin 2 and the reinforcing rib 3 is located at the lower part of the wooden flooring.

[0046] Composite material flooring is generally formed as a whole using an autoclave process during the molding process. Compared with metal structures, this reduces the amount of complex welding, effectively avoids welding deformation of parts, results in high precision of parts, effectively reduces subsequent adjustment work, and improves work efficiency.

[0047] On the other hand, the upper surface of the upper skin 1 can be set as a plane, or it can be set as a surface with concave or convex parts, depending on the actual situation, which will not be elaborated here.

[0048] In practical use, the upper surface of the upper skin 1 in this specific embodiment can be used to install wooden flooring. Compared with the metal base plate in the prior art, the composite material flooring provided in this specific embodiment has the following beneficial effects:

[0049] 1. In the composite material floor of the present invention, at least one of the upper skin 1, lower skin 2, and reinforcing rib 3 is made of carbon fiber. Compared with the metal material in the prior art, it can effectively reduce weight. The overall floor structure is more than 35% lighter than the stainless steel structure, which effectively reduces the energy consumption of train operation.

[0050] 2. In the actual assembly process, metal base plates need to be connected by welding. The composite material floor in this invention is made of carbon fiber, which can effectively reduce the amount of welding, avoid deformation during the welding process, thereby improving the precision of the parts, reducing the adjustment work in the later process, and improving work efficiency.

[0051] 3. In this invention, a reinforcing rib 3 is provided between the upper skin 1 and the lower skin 2, which can effectively ensure the structural strength of the composite material floor.

[0052] 4. In this invention, a weight-reducing material 4 is filled between the upper skin 1 and the lower skin 2, which can further reduce the weight and improve the sound insulation effect.

[0053] Based on the above embodiments, the composite material floor may also include a first floor body 8, and the outer surface of the upper skin 1 is provided with a mounting recess 5. The cross-section of the mounting recess 5 is an inverted trapezoidal structure. The mounting recess 5 is used to set a first mounting seat 7. The first mounting seat 7 is used to fix the adjacent first floor body 8. The first floor body 8 is located at a protruding position between the adjacent mounting recesses 5.

[0054] like Figure 1 As shown, the surface of the upper skin 1 is provided with a mounting recess 5. In actual installation, the first mounting seat 7 is placed in the mounting recess 5, which can avoid the first mounting seat 7 occupying additional height space of the composite material floor, which is conducive to reducing the height of the composite material floor and reducing the space occupied by the composite material floor.

[0055] It should be noted that the first floor body 8 mentioned in this specific embodiment can be wood flooring, commonly including oak, teak, walnut, birch, etc. Different types of wood vary in color, texture, hardness, and price. Solid wood flooring is formed from natural wood through drying and processing, presenting natural textures and colors with a unique aesthetic appeal. It is comfortable underfoot, warm in winter and cool in summer, and can regulate the temperature and humidity inside the vehicle. Furthermore, it is relatively environmentally friendly because it is a natural material and does not contain formaldehyde or other harmful substances. Alternatively, the first floor body 8 can also be made of engineered wood flooring, using fiberboard, particleboard, etc., as the base material, with a wear-resistant layer, decorative layer, and balancing layer on the surface. Installation is convenient, requiring no joists, and can be laid directly on the ground. Alternatively, the first floor body 8 can also be made of solid wood composite flooring, made of cross-laminated boards of different tree species, overcoming the unidirectional isotropic disadvantage of solid wood flooring, with low shrinkage and expansion rates, and good stability. It retains the natural texture and comfortable feel of solid wood flooring, while being more affordable. Of course, the first floor body 8 can also be set to flooring of other materials, depending on the actual situation, which will not be elaborated here.

[0056] Specifically, the first mounting base 7 can be configured as a U-shaped structure, and a first rubber buffer pad can be provided between the first mounting base 7 and the first floor body 8 to achieve shock absorption and buffering of the first floor body 8.

[0057] In actual installation, the first mounting base 7 can be fixed to the upper skin 1 with screws. The connection between the first mounting base 7 and the first floor body 8 can be achieved through a snap-fit ​​structure. Specifically, a slot can be provided on the side of the first floor body 8 facing the upper skin 1, and a snap-fit ​​protrusion can be provided on the first mounting base 7. During the assembly process, the snap-fit ​​protrusion slides into the slot from one end of the slot to achieve the snap-fit ​​engagement between the first floor body 8 and the first mounting base 7.

[0058] It should be noted that the first mounting base 7 can be made of metal or other materials that meet the requirements, depending on the actual situation, which will not be elaborated here.

[0059] Preferably, the surface of the protrusion between adjacent mounting recesses 5 that contacts the first floor body 8 can be set as a plane, or the surface of the protrusion between adjacent mounting recesses 5 that contacts the first floor body 8 can be set as a shape that matches the surface of the first floor body 8 facing the upper skin 1. The specific details are determined according to the actual situation and will not be elaborated here.

[0060] Based on the above embodiments, in order to improve the structural strength of the composite material floor, the first mounting base 7 and the upper skin 1 can be set as an integral structure. In the actual processing, the first mounting base 7 and the upper skin 1 can be integrally formed by injection molding.

[0061] It should be noted that, depending on the actual installation requirements, mutually cooperating positioning grooves and positioning protrusions can be set in the adjacent first floor bodies 8 to facilitate positioning of the adjacent first floor bodies 8 during installation.

[0062] Specifically, a positioning protrusion can be provided on one side of the first floor body 8, located on the surface of the first floor body 8 facing the upper skin 1. A positioning recess is provided on the other side of the first floor body 8, located on the surface of the first floor body 8 away from the upper skin 1. During the assembly of the first floor, the positioning recess of one of the adjacent first floor bodies 8 is adjacent to the positioning protrusion of the other first floor body 8. When installing the first floor body 8, the positioning recess and positioning protrusion of the adjacent first floor bodies 8 cooperate to achieve positioning and installation of the adjacent first floor bodies 8. At the same time, the adjacent first floor bodies 8 can be snapped together, which helps to improve the overall structural strength of the floor.

[0063] Of course, the first floor body 8 can also be installed in other ways that meet the requirements, depending on the actual situation, which will not be elaborated here.

[0064] Based on the above embodiments, the composite material floor can also include a second floor body. The outer surface of the upper skin 1 is provided with a mounting protrusion 6. The mounting protrusion 6 is used to set a second mounting seat. The second mounting seat is used to fix an adjacent second floor body. The second floor body is located in a recessed position between adjacent mounting protrusions 6.

[0065] It should be noted that in this specific embodiment, the second mounting base is installed on the mounting protrusion 6 of the upper skin 1, and the second floor body is laid on the upper side of the second mounting base. A cavity structure is formed between the second floor body and the adjacent mounting protrusion 6 of the upper skin 1. The cavity structure can be used to install other components, or wires or air pipes can be laid in the cavity structure formed between the second floor body and the adjacent mounting protrusion 6 of the upper skin 1 to avoid occupying other space. At the same time, it can also protect the components, wires or air pipes from being exposed to the outside and damaged.

[0066] Specifically, a threading space for the wire harness to pass through and a fixing bracket for fixing the wire harness can be provided between the second floor body and the upper skin 1.

[0067] like Figure 2As shown, a mounting recess 5 is formed between adjacent mounting protrusions 6. During installation, the second mounting base is fixed to the mounting protrusion 6, and the second floor body is located on the upper side of the second mounting base. The second floor body and the mounting recess 5 of the upper skin 1 form a threading space for the wire harness to pass through. In order to further protect the wire harness, a conduit for the wire harness to pass through can also be set in the threading space. The wire harness is located in the conduit to avoid damage to the wire harness. On the other hand, the conduit can be made of insulating material, which can have an insulating effect while protecting the wire harness.

[0068] It should be noted that the fixing bracket mentioned in this specific embodiment can be configured as a cable tie fixing structure. Specifically, it can be configured as a cable tie and sheet metal edge snap-fit ​​assembly, a cable tie and sheet metal hole snap-fit ​​assembly, or a cable tie and cylindrical snap-fit ​​assembly. The cable tie and sheet metal edge snap-fit ​​assembly is suitable for situations where there are no fixing holes or temperature will affect the viscosity of the adhesive block. It can be quickly pushed into the edge of a sheet metal with a thickness of 1.0-3.0mm and is commonly used on the edges of sheet metal edges or the edges of internal reinforcing ribs in plastic parts. The cable tie and sheet metal hole snap-fit ​​assembly requires a suitable single hole to be pre-drilled in the sheet metal, and its characteristics are quick assembly and high reliability. The cable tie and cylindrical snap-fit ​​assembly is suitable for assembly on cylindrical rods or tubes, and also features quick assembly and high reliability. Alternatively, the fixing bracket can be configured as a wire clamp fixing structure. The wire clamp fixing structure can be fixed by double-sided adhesive, which is used to attach the wire clamp to the position where the wire harness needs to be fixed. The cable harness can be secured using either clips or screws. A plastic bracket can be used as the mounting structure. This bracket can be a single, integrated unit with multiple mounting points to hold the cable harness in place. Alternatively, it can be a modular design, composed of multiple plastic components that can be assembled and disassembled as needed. Other structural forms are also possible, depending on the specific requirements and will not be elaborated upon here.

[0069] Based on the above embodiments, the second mounting base can be a U-shaped structure, and a second rubber buffer pad can be provided between the second mounting base and the second floor body to achieve shock absorption and buffering of the second floor body.

[0070] In actual installation, the second mounting base can be fixed to the upper skin 1 with screws. The connection between the second mounting base and the second floor body can be achieved through a snap-fit ​​structure. Specifically, a slot can be provided on the side of the second floor body facing the upper skin 1, and a snap-fit ​​protrusion can be provided on the second mounting base. During assembly, the snap-fit ​​protrusion slides into the slot from one end, achieving a snap-fit ​​engagement between the second floor body and the second mounting base. Of course, other fixing methods can also be used between the second floor body and the second mounting base, depending on the actual situation, and will not be elaborated here.

[0071] It should be noted that the second mounting base can be made of metal or other materials that meet the requirements, depending on the actual situation, which will not be elaborated here.

[0072] Based on the above embodiments, in order to improve the structural strength of the composite material floor, the second mounting base and the upper skin 1 can be set as an integral structure. In the actual processing, the second mounting base and the upper skin 1 can be integrally formed by injection molding.

[0073] It should be noted that, depending on the actual installation requirements, mutually cooperating positioning grooves and positioning protrusions can be set in the adjacent second floor bodies to facilitate positioning of the adjacent second floor bodies during installation.

[0074] Specifically, a positioning protrusion can be provided on one side of the second floor body, located on the surface of the second floor body facing the upper skin 1. A positioning recess is provided on the other side of the second floor body, located on the surface of the second floor body facing away from the upper skin 1. During the assembly of the second floor, the positioning recess of one second floor body is adjacent to the positioning protrusion of the other second floor body. When installing the second floor body, the positioning recess and positioning protrusion of the adjacent second floor body cooperate to achieve positioning and installation of the adjacent second floor bodies. At the same time, the adjacent second floor bodies can be interlocked, which helps to improve the overall structural strength of the floor.

[0075] Of course, the second floor unit can also be installed in other ways that meet the requirements, depending on the actual situation, which will not be elaborated here.

[0076] Based on the above embodiments, the weight-reducing material 4 can be specifically set as weight-reducing foam, weight-reducing honeycomb, or weight-reducing plastic.

[0077] Specifically, weight-reducing material 4 can be polyurethane foam, which is divided into flexible polyurethane foam and rigid polyurethane foam. Flexible polyurethane foam is soft and elastic, and is often used for filling furniture cushions, mattresses, etc. Rigid polyurethane foam has higher strength and hardness, and can be used in building insulation, refrigeration equipment, and other fields. Alternatively, weight-reducing material 4 can be polyethylene foam, which has good flexibility, chemical corrosion resistance, and waterproof performance. It can be divided into low-density polyethylene foam and high-density polyethylene foam, with different densities suitable for different applications. Weight-reducing material 4 can also be a foaming material, specifically expanded polystyrene (EPS). Expanded polystyrene (EPS) has lightweight, heat insulation, sound absorption, and shock absorption properties. It has a low density, typically between 10-30 kg / m³. 3 This allows for significant weight reduction in products. It has low cost, good processing performance, and can be molded into various shapes. The foaming material can also be polyurethane foam (PU), which has a wide hardness range that can be adjusted to meet different needs. It possesses good heat and sound insulation properties, while also exhibiting certain strength and wear resistance. Its density is generally between 30-80 kg / m³. 3 about.

[0078] Of course, the weight-reducing material 4 can also be set to other materials, depending on the actual situation, which will not be elaborated here.

[0079] Based on the above embodiments, the reinforcing ribs 3 can be inclinedly arranged in the space between the upper skin 1 and the lower skin 2, and the cross-section of the space between adjacent reinforcing ribs 3 can be a trapezoidal structure or an inverted trapezoidal structure.

[0080] The space enclosed by the upper skin 1 and the lower skin 2 is divided into multiple different interval areas by the reinforcing ribs 3. Different interval areas can be filled with different weight-reducing materials 4, or the same weight-reducing material 4 can be filled in different interval areas. The specific determination depends on the actual situation and will not be elaborated here.

[0081] In this specific embodiment, the reinforcing rib 3 is set as a long strip, and the long strip reinforcing rib 3 is inclinedly arranged in the space enclosed by the upper skin 1 and the lower skin 2. The long strip reinforcing rib 3 occupies less space and has less impact on the internal space between the skins. In addition, the long strip reinforcing rib 3 is relatively simple to process and can be manufactured by extrusion, milling and other methods.

[0082] Of course, depending on the actual situation, the reinforcing ribs 3 in the space enclosed by the skin and the lower skin 2 in this invention can also be set to other shapes that meet the requirements. The specific shape is determined according to the actual situation and will not be elaborated here.

[0083] Specifically, the reinforcing rib 3 can also be set as a T-shaped reinforcing rib. The T-shaped reinforcing rib is shaped like the letter "T" and consists of a horizontal part and a vertical part. The horizontal part is connected to the upper skin 1 to provide support and stability; the vertical part increases the height of the structure and improves the bending resistance. The T-shaped reinforcing rib can be designed with different sizes and thicknesses as needed to meet different strength requirements. The installation of the T-shaped reinforcing rib is relatively convenient and can be connected to the skin by welding, riveting, etc.

[0084] In addition, the reinforcing rib 3 can be set as an L-shaped structure. The shape of the reinforcing rib 3 is right angled, similar to the letter "L". It can provide support in two directions and enhance the strength of the skin at the edges and corners. The L-shaped reinforcing rib can usually be integrally formed with the skin, reducing the number of connection points and improving the overall structure. The angle and size can be adjusted according to different stress conditions.

[0085] Depending on the actual situation, the reinforcing rib 3 in this specific embodiment can also be set to other shapes or materials, which will be determined according to the actual situation and will not be elaborated here.

[0086] In one specific embodiment, to prevent fires or to isolate fires in the event of a fire, a fire-retardant coating can be applied to the bottom surface of the lower skin 2 and the upper surface of the upper skin 1. The fire-retardant coating can effectively prevent the spread of fire and reduce casualties.

[0087] Before applying a fire-retardant coating, the substrate surface must be cleaned, rust-removed, and degreased to ensure good adhesion. After application, the quality of the fire-retardant coating must be inspected, including its thickness, adhesion, and appearance. Only after passing inspection can the coating be put into use.

[0088] Specifically, fire-retardant coatings can include charring agents, dehydration catalysts, foaming agents, and base materials. Charring agents, such as starch, pentaerythritol, and their dimers and trimers, promote the formation of a non-combustible char layer at high temperatures, providing heat insulation and preventing flame spread. Pentaerythritol produces a large amount of char products during expansion, improving the strength and stability of the char layer. Dehydration catalysts are typically ammonium polyphosphate. Their function is to promote the dehydration and carbonization of the charring agent at a certain temperature, accelerating the expansion and foaming process. Ammonium polyphosphate decomposes upon heating to produce phosphoric acid, causing the charring agent to dehydrate and form a char layer, while simultaneously releasing non-combustible gases, causing the coating to expand. Common foaming agents include melamine and dicyandiamide. At high temperatures, the foaming agent decomposes and releases non-flammable gases such as nitrogen and carbon dioxide, causing the coating to expand and form a foam-like structure. This foam structure has excellent thermal insulation properties, effectively preventing heat transfer to the substrate. The base material is generally a synthetic resin, such as acrylic resin or epoxy resin. The role of the base material is to bind various components together to form a uniform coating and provide a certain degree of adhesion and durability. Acrylic resin has good weather resistance and chemical corrosion resistance, making it suitable for fire protection in various environments. On the other hand, fire-retardant coatings can also include non-intumescent fire-retardant coating materials. Non-intumescent fire-retardant coating materials include inorganic thermal insulation materials, binders, and flame retardants. Among them, inorganic thermal insulation materials, such as vermiculite, are natural layered silicate minerals with good thermal insulation and high-temperature resistance properties. In a fire, vermiculite can expand to form a thermal insulation layer, preventing heat transfer. For example, perlite is a glassy rock formed by the rapid cooling of acidic lava from volcanic eruptions, which expands upon heating to form a porous granular material. Perlite is lightweight, heat-insulating, and non-combustible. For example, glass microspheres, made from borosilicate raw materials through high-tech processing, have small particle size, are hollow, and possess excellent heat insulation properties and chemical stability. Binders, such as silicate cement, are commonly used inorganic binders with high strength, good durability, and high-temperature resistance. In non-intumescent fire-retardant coatings, cement can firmly bond inorganic heat-insulating materials to the substrate. For example, water glass, an aqueous solution of sodium silicate, has good adhesion and water resistance. Water glass gradually hardens in air to form a robust coating. Flame retardants, such as aluminum hydroxide, are commonly used inorganic flame retardants. They decompose and absorb heat at high temperatures, releasing water of crystallization, which lowers the flame temperature. Simultaneously, the aluminum oxide produced during decomposition forms a dense protective film, preventing the transfer of oxygen and heat. For example, magnesium hydroxide, similar to aluminum hydroxide, has good flame-retardant properties. Magnesium hydroxide has a higher decomposition temperature, making it suitable for fire protection at higher temperatures.

[0089] Of course, the fire-retardant coating can also be made of other materials that meet the requirements, depending on the specific circumstances, which will not be elaborated here.

[0090] In this specific embodiment, by providing a fireproof coating on the bottom surface of the lower skin 2 and the upper surface of the upper skin 1, the spread of fire can be effectively blocked and the damage of the fire can be reduced.

[0091] Based on the above embodiments, in order to further improve the sound insulation effect of composite material flooring, sound insulation filler can be set in the space enclosed by upper skin 1 and lower skin 2. Reinforcing rib 3 divides the space enclosed by upper skin 1 and lower skin 2 into multiple independent filling spaces. One of the adjacent filling spaces is filled with weight-reducing material 4, and the other of the adjacent filling spaces is filled with sound insulation filler.

[0092] It should be noted that the sound insulation filling component in this specific embodiment can be made of fibrous material, specifically, fiber material can be glass fiber, rock wool or polyester fiber; of course, the sound insulation filling component can also be made of foam material, such as polystyrene foam (EPS), polyurethane foam (PU), etc., depending on the actual situation, which will not be elaborated here.

[0093] In this specific embodiment, the sound insulation effect of the composite material floor can be effectively improved by setting sound insulation filler, which helps to avoid transmitting the noise generated by the train in motion into the carriage, making the carriage environment more comfortable.

[0094] On the other hand, an insulating coating can be provided on the inner surface of the upper skin 1, the outer surface of the upper skin 1, the inner surface of the lower skin 2, and the outer surface of the lower skin 2.

[0095] By applying an insulating coating, the insulation effect of the composite material floor can be effectively improved. When there is leakage in the electrical appliances at the bottom of the carriage or leakage in the wiring harness running through the composite material floor, the insulating coating can effectively prevent the current from breaking down the composite material floor and improve the safety inside the carriage.

[0096] In one specific embodiment, in order to obtain the temperature information of the composite material floor in a timely manner and detect potential fire situations in a timely manner during actual use, a first temperature detection element can be set on the upper surface of the upper skin 1, a second temperature detection element can be set on the lower surface of the lower skin 2, and a third temperature detection element can be set in the cavity enclosed by the upper skin 1 and the lower skin 2.

[0097] In actual use, the first temperature sensor detects the first temperature information of the upper surface of the upper skin 1 in real time, the second temperature sensor detects the second temperature information of the lower surface of the lower skin 2 in real time, and the third temperature sensor detects the third temperature information of the cavity enclosed by the upper skin 1 and the lower skin 2 in real time. When at least one of the first, second, and third temperature information is higher than the preset maximum temperature value, the relevant early warning equipment is controlled to issue a warning message so that maintenance personnel can carry out maintenance in a timely manner and avoid disasters.

[0098] In this specific embodiment, by setting a first temperature detection element, a second temperature detection element, and a third temperature detection element, the temperature information of the upper surface of the upper skin 1, the lower surface of the lower skin 2, and the temperature between the upper skin 1 and the lower skin 2 can be detected in real time. Temperature monitoring can be performed on different locations of the composite material floor, and a prompt message can be issued in a timely manner when the temperature exceeds the preset maximum temperature value. This is beneficial for discovering problems before a disaster occurs and avoiding disasters. At the same time, it is beneficial for maintenance personnel to accurately locate the maintenance location and reduce the difficulty of maintenance.

[0099] In one specific embodiment, in order to avoid safety hazards caused by bulging or protrusion of the floor body after long-term use, a distance detection device can be set on the upper surface of the upper skin 1 to detect the distance between the upper floor body and the upper skin 1. When the distance information detected by the distance detection device is greater than the maximum value of the preset distance range or when the distance information detected by the distance detection device is less than the minimum value of the preset distance range, the relevant early warning device is controlled to issue a warning message so that maintenance personnel can carry out maintenance in a timely manner.

[0100] In this specific embodiment, by setting a distance detection device, the flatness of the floor surface can be monitored in real time. In the event of an unexpected bulge or dent in the floor, relevant information can be obtained immediately, giving maintenance personnel more time for repairs. At the same time, it can also promptly remind passengers to avoid safety accidents.

[0101] In addition to the composite material floor described above, the present invention also provides a rail vehicle including the composite material floor disclosed in the above embodiments. The structure of other parts of the rail vehicle is described in the prior art and will not be repeated here.

[0102] In one specific embodiment, the rail vehicle includes a car body shell, a car body frame, and interior decoration. Specifically, the car body shell includes side walls, a roof, and end walls. The side walls are located on both sides of the car body and are made of sheet metal or composite materials. The side walls typically have a certain strength and rigidity to withstand air pressure and vibration during vehicle operation; components such as windows, doors, and ventilation openings may be installed on the side walls. Windows provide passengers with a view, doors are used for passenger boarding and alighting, and ventilation openings ensure air circulation inside the vehicle; the roof covers the top of the car body and serves to protect the equipment and passengers inside the vehicle. The roof typically adopts an arc design to reduce air resistance; components such as pantographs, air conditioning units, and ventilation equipment may be installed on the roof. The pantograph is used to obtain power from the overhead contact line, the air conditioning unit provides a comfortable temperature environment inside the vehicle, and the ventilation equipment ensures fresh air inside the vehicle; the end walls are located at both ends of the car body, connecting the side walls and the roof. The end walls typically have high strength to withstand the impact force during a collision; components such as couplers, buffer devices, and electrical connectors may be installed on the end walls. The coupler is used to connect adjacent vehicles, the buffer device acts as a buffer in the event of a vehicle collision, and the electrical connector is used to transmit power and signals.

[0103] The car body frame includes the underframe, side frames, and roof frame. The underframe is the bottom structure of the car body, bearing the weight and various loads. It typically consists of longitudinal beams, crossbeams, and a floor. The longitudinal and crossbeams are generally made of high-strength steel, providing sufficient strength and rigidity. The floor can be made of sheet metal or composite materials, offering good wear resistance and anti-slip properties. The underframe may also house components such as bogies, braking systems, and electrical equipment. The bogies support the car body and ensure stable vehicle operation; the braking system is used for braking; and the electrical equipment provides power and control signals to the vehicle. The side frames consist of columns, crossbeams, and reinforcing ribs, forming the side structure of the car body together with the side walls. The side frames are typically made of high-strength steel or aluminum alloy, providing good strength and rigidity. The side frames may also house components such as window frames, door rails, and handrails. Window frames secure the windows, door rails guide the movement of the doors, and handrails provide support for passengers. The roof frame consists of longitudinal beams, cross beams, and arched structures, forming the top structure of the vehicle body together with the roof. The roof frame is typically made of high-strength steel or aluminum alloy, providing excellent strength and rigidity. Components such as pantograph mounts, air conditioning unit mounts, and ventilation equipment mounts may be installed on the roof frame. The pantograph mount is used to secure the pantograph, the air conditioning unit mount provides support for the air conditioning unit, and the ventilation equipment mount is used to install ventilation equipment.

[0104] The interior trim includes seats, armrests, interior panels, and floor coverings. Seats provide seating for passengers and are typically made of materials such as plastic, fabric, or leather. Seat design should conform to ergonomic principles to provide a comfortable riding experience; seats may have adjustable functions, such as backrest angle adjustment and seat forward / backward adjustment, to meet the needs of different passengers. Armrests are installed on the side walls and pillars inside the passenger compartment, providing support for passengers. Armrests are usually made of metal tubing or plastic, possessing a certain strength and anti-slip properties; the height and position of the armrests should be designed according to ergonomic principles for easy passenger gripping. Interior panels cover the vehicle body frame, serving both decorative and protective functions. Interior panels are typically made of plastic, aluminum, or composite materials, offering good appearance and durability; interior panels may include advertising space, indicator lights, emergency call buttons, and other components. Advertising space provides display space for commercial advertisements, indicator lights indicate the vehicle's operating status, and emergency call buttons provide passengers with a channel for assistance in emergency situations. The floor covering is a structure laid on the upper surface of the first floor body 8 or the second floor body mentioned in the above embodiments. The floor covering is laid on the carriage floor and serves to prevent slipping, provide wear resistance, and enhance aesthetics. The floor covering is typically made of materials such as rubber, plastic, or carpet; the color and pattern of the floor covering should coordinate with the overall style of the carriage to provide passengers with a comfortable visual experience.

[0105] The rail vehicle provided in this specific embodiment, in actual use, can reduce the overall weight of the rail vehicle because at least part of the composite material floor is made of carbon fiber, which is conducive to the lightweighting of the vehicle and also helps to reduce the energy consumption of train operation.

[0106] The terms "first" and "second" in the first mounting base 7 and the second mounting base, the first floor body 8 and the second floor body, the first rubber buffer pad and the second rubber buffer pad mentioned in this application are only for distinguishing different positions and do not indicate any order.

[0107] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. Any combination of all embodiments provided by this invention is within the scope of protection of this invention and will not be elaborated upon here.

[0108] The composite material floor and rail vehicle provided by this invention have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this invention. It should be noted that those skilled in the art can make several improvements and modifications to this invention without departing from the principles of this invention, and these improvements and modifications also fall within the protection scope of the claims of this invention.

Claims

1. A composite material flooring, characterized in that, It includes an upper skin (1), a lower skin (2) and a reinforcing rib (3) disposed between the upper skin (1) and the lower skin (2), with one end of the reinforcing rib (3) connected to the upper skin (1) and the other end connected to the lower skin (2). The upper skin (1) and the lower skin (2) are filled with a weight-reducing material (4); at least one of the upper skin (1), the lower skin (2) and the reinforcing rib (3) is made of carbon fiber. It also includes a first floor body (8), the outer surface of the upper skin (1) is provided with a mounting recess (5), the cross-section of the mounting recess (5) is an inverted trapezoidal structure, the mounting recess (5) is used to set a first mounting seat (7), the first mounting seat (7) is used to fix the adjacent first floor body (8), and the first floor body (8) is located at a protruding position between the adjacent mounting recesses (5). In the protrusion between adjacent mounting recesses (5), the surface for contacting the first floor body (8) is configured to fit the surface of the first floor body (8) facing the upper skin (1); The reinforcing rib (3) is inclinedly arranged in the space between the upper skin (1) and the lower skin (2), and the cross-section of the space between adjacent reinforcing ribs (3) is a trapezoidal structure or an inverted trapezoidal structure. The mounting recess (5) is located at the top of the space between adjacent reinforcing ribs (3) in an upright trapezoidal structure.

2. The composite material flooring according to claim 1, characterized in that, The first mounting base (7) has a U-shaped structure, and a first rubber buffer pad is provided between the first mounting base (7) and the first floor body (8); And / or, the first mounting base (7) and the upper skin (1) are an integral structure.

3. The composite material flooring according to claim 1, characterized in that, It also includes a second floor body, the outer surface of the upper skin (1) is provided with a mounting protrusion (6), the mounting protrusion (6) is used to set a second mounting seat, the second mounting seat is used to fix the adjacent second floor body, and the second floor body is located in a recessed position between the adjacent mounting protrusions (6).

4. The composite material flooring according to claim 3, characterized in that, A threading space for the wire harness to pass through and a fixing bracket for fixing the wire harness are provided between the second floor body and the upper skin (1).

5. The composite material flooring according to claim 3, characterized in that, The second mounting base is a U-shaped structure, and a second rubber buffer pad is provided between the second mounting base and the second floor body; And / or, the second mounting base and the upper skin (1) are an integral structure.

6. The composite material flooring according to claim 1, characterized in that, The weight-reducing material (4) is weight-reducing foam, weight-reducing honeycomb, or weight-reducing plastic.

7. The composite material flooring according to claim 1, characterized in that, The bottom surface of the lower skin (2) and the upper surface of the upper skin (1) are both provided with a fireproof coating; The space enclosed by the upper skin (1) and the lower skin (2) is provided with a sound insulation filler. The reinforcing rib (3) divides the space enclosed by the upper skin (1) and the lower skin (2) into multiple independent filling spaces. One of the adjacent filling spaces is filled with the weight reduction material (4), and the other of the adjacent filling spaces is filled with the sound insulation filler. An insulating coating is provided on the inner surface of the upper skin (1), the outer surface of the upper skin (1), the inner surface of the lower skin (2), and the outer surface of the lower skin (2). The upper surface of the upper skin (1) is provided with a first temperature detection element, and the lower surface of the lower skin (2) is provided with a second temperature detection element; The upper surface of the upper skin (1) is provided with a distance detection element for detecting the distance between the upper floor body and the upper skin (1).

8. A rail vehicle, characterized in that, Includes the composite material flooring as described in any one of claims 1-7.

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