Composite material luggage rack frame structure based on pultrusion process and rail vehicle

Abstract

The invention discloses a composite material baggage holder frame structure based on a pultrusion process and a rail vehicle, and relates to the technical field of rail transit vehicles, and the baggage holder frame structure is a uniform-section multi-cavity structure formed by the pultrusion process; a force bearing part is arranged at one end of the luggage rack frame structure, and a second function part is arranged on the lower side of the force bearing part; the other end of the luggage rack frame structure is provided with a first functional part, and the first functional part is provided with a convex structure which forms a set angle with the working surface of the luggage rack frame structure; the luggage rack frame structure is provided with a through opening area, and the opening area is used for installing a transparent part. The whole luggage rack is manufactured by adopting a pultrusion process, so that the assembly process is reduced, and the production efficiency is improved; and on the premise that the functions of the luggage rack are guaranteed, the lightweight requirement is met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rail transit vehicles, and in particular to a composite luggage rack frame structure based on a pultrusion process and a rail vehicle. BACKGROUND

[0002] In the field of rail transit, lightweight design of the vehicle body is one of the key factors for improving energy efficiency, increasing passenger capacity, and reducing operating costs. Currently, the luggage rack frame of a rail transit vehicle is mainly made of aluminum alloy. Although aluminum alloy has certain strength and corrosion resistance, it can meet the basic load-bearing requirements of the luggage rack, the aluminum alloy luggage rack frame, however, increases the overall weight of the vehicle body. Composite materials, with their unique characteristics of lightweight and high strength, are gradually being applied in the field of rail transit.

[0003] In the production process of existing composite luggage racks, most composite parts are produced by OOA, mold pressing, and autoclave processes, and a small number of tubular parts are produced by a composite pultrusion process. Finally, the parts are assembled together to form a product. Although the produced composite luggage rack reduces the weight compared to the aluminum alloy luggage rack, it increases the production cost. Moreover, the assembly process is complicated, which affects the production efficiency. SUMMARY

[0004] In view of the deficiencies of the prior art, the purpose of the present application is to provide a composite luggage rack frame structure based on a pultrusion process and a rail vehicle. The luggage rack is made of a pultrusion process, reducing the assembly process and improving production efficiency. Under the premise of ensuring the function of the luggage rack, the lightweight requirement is met.

[0005] To achieve the above-mentioned purpose, the present application is realized by the following technical solutions: In a first aspect, an embodiment of the present application provides a composite luggage rack frame structure based on a pultrusion process, wherein the luggage rack frame structure is an equal cross-section multi-cavity structure formed by a pultrusion process. One end of the luggage rack frame structure has a load-bearing part, and the lower side of the load-bearing part is provided with a second functional part. The other end of the luggage rack frame structure has a first functional part, and the first functional part has a protruding structure at a set angle with the working surface of the luggage rack frame structure. The luggage rack frame structure is provided with a through opening area, and the opening area is used to install a transparent part.

[0006] As a further implementation manner, the top surface of the luggage rack frame structure is a working surface, and the working surface is a plane or a curved surface with a set curvature.

[0007] As a further implementation manner, the longitudinal cross-section of the first functional part is a polygonal structure.

[0008] As a further implementation manner, the first function part is a quadrilateral structure, and the abutment surface of the first function part and the working surface is a slope surface, and the slope surface extends to the bottom surface of the luggage rack frame structure.

[0009] As a further implementation manner, the first function part is a hexagonal structure, and the abutment surface of the first function part and the working surface is a slope surface, and the slope surface and the bottom surface of the luggage rack frame structure are connected through a vertical surface.

[0010] As a further implementation manner, the second function part is a closed structure.

[0011] As a further implementation manner, the bottom of the second function part is an open structure.

[0012] As a further implementation manner, the opening area is internally provided with a mounting table.

[0013] As a further implementation manner, the force bearing part is provided with a plurality of vertical ribs.

[0014] In a second aspect, the embodiments of the present application also provide a rail vehicle provided with the luggage rack frame structure based on the pultrusion process.

[0015] The beneficial effects of the present application are as follows: (1) The luggage rack frame structure has a force bearing part at one end, and a second function part is arranged at the lower side of the force bearing part, and the luggage rack frame structure has a first function part at the other end, so as to form an equal cross-section multi-cavity structure, and the whole is formed by using the pultrusion process, thereby reducing assembly; under the premise of ensuring the function of the luggage rack, the luggage rack frame structure meets the lightweight requirement.

[0016] (2) The first function part has a protruding structure at a certain angle with the luggage rack frame structure, which can block the luggage and also guide the luggage during placement; the first function part and the second function part cooperate to provide a mounting surface of a lower decorative cover; the force bearing part has a plurality of vertical ribs, which can ensure the supporting strength; the working surface of the luggage rack frame structure is provided with an opening area, and a transparent piece is arranged in the opening area, so as to facilitate observation of the placement state of the luggage.

[0017] (3) The structure of the first function part and the second function part can be adjusted, thereby meeting the diversified installation requirement. DETAILED DESCRIPTION

[0018] The drawings accompanying the specification of the present application form a part thereof, serve to provide further understanding of the present application, and together with the exemplary embodiments of the present application and their description, explain the present application, and do not constitute an improper limitation of the present application.

[0019] Figure 1 is an axonometric view of the luggage rack frame structure of embodiment 1 of the present application; Figure 2 is an end view of the luggage rack frame structure of the embodiment 1 of the present application; Figure 3 is a cross-sectional view of the opening area of the luggage rack frame structure of the embodiment 1 of the present application; Figure 4 is an axonometric view of the luggage rack frame structure of the embodiment 2 of the present application; Figure 5 is an end view of the luggage rack frame structure of the embodiment 2 of the present application; Figure 6 is a cross-sectional view of the opening area of the luggage rack frame structure of the embodiment 2 of the present application.

[0020] Wherein, 1, opening area, 2, force bearing part, 3, first functional part, 4, second functional part, 5, vertical rib, 6, inclined surface, 7, mounting platform, 8, vertical surface, 9, open structure. DETAILED DESCRIPTION

[0021] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. In the description of the present application, the terms "first", "second" are used only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0022] For the convenience of description, if "up", "down", "left", "right" appear in the present application, it only means consistent with the up, down, left, right direction of the drawing itself, and does not limit the structure, only for the convenience of describing the present application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0023] Noun explanation: OOA process refers to the process of curing prepreg by curing oven.

[0024] Embodiment 1: In the production process of the existing composite luggage rack, most of the composite parts are produced by OOA, mold pressing, autoclave process, and a small amount of pipe parts are produced by composite pultrusion process. Finally, the parts are assembled together to form a product. The assembly process must meet the assembly requirements, so as to increase the complexity of the production process.

[0025] Based on this, the embodiment provides a composite luggage rack frame structure based on a pultrusion process. The whole is an equal cross-section structure, which is made of a pultrusion process. The pultrusion process is an automatic technology for continuous molding of composite materials. Continuous fibers are pulled by a traction device, impregnated with resin in a dipping tank, and then cured and shaped in a heated mold. Finally, a composite material component with fixed cross-sectional shape and unlimited length is formed.

[0026] As shown in Figures 1-3 , the luggage rack frame structure of the embodiment is an equal cross-section multi-cavity structure formed by a pultrusion process. The upper surface of the luggage rack frame structure is used for placing luggage, i.e., the working surface. The working surface can be a plane or a curved surface with a certain concave curvature. The curved surface can better place the luggage and avoid the luggage from falling off. The specific bending curvature of the curved surface is set according to the actual bearing requirements.

[0027] The main part of the luggage rack frame structure is in the form of a cuboid frame, which has multiple cavities inside. According to the view direction, the left end of the luggage rack frame structure is a force-bearing part 2, which is installed on the vehicle body through the force-bearing part 2 and is used to bear the overall weight. The force-bearing part 2 has multiple vertical ribs 5 inside, which enhance the mechanical properties and stiffness. The number, width, and position of the vertical ribs 5 are determined by mechanical analysis according to the specific bearing conditions.

[0028] The right end of the luggage rack frame structure has a first functional part 3, which has a protruding structure relative to the working surface. The protruding structure plays a blocking role on the luggage to prevent it from sliding off. In this embodiment, the first functional part 3 is a quadrilateral structure, which has better stability and is not easily deformed or damaged when bearing the impact or extrusion of the luggage.

[0029] Specifically, as shown in Figure 2 and Figure 3 , for the main part of the luggage rack frame structure, the top surface and the bottom surface are both planes. The bottom surface of the first functional part 3 is coplanar with the bottom surface of the main part. The bottom surface of the first functional part 3 is used to connect the lower decorative cover and provide a mounting surface for it. The left side surface of the first functional part 3 is a slope 6, which extends from the upper side of the working surface to the bottom surface of the luggage rack frame structure. The included angle between the slope 6 and the working surface is an obtuse angle (e.g., 120°). The top surface of the first functional part 3 has a certain downward slope, and the right side surface forms an inverted L-shaped structure with the top surface. At the same time, the intersection between the top surface and the left side surface of the first functional part 3 is a circular arc structure, which plays a guiding role when placing the luggage from bottom to top and facilitates the pushing of the luggage into the working surface of the luggage rack frame structure.

[0030] Since the slope 6 extends to the bottom and connects with the first functional part 3, the cross section of the cavity is an inverted right-angled trapezoidal structure.

[0031] A second functional part 4 is provided on the lower side of the load-bearing part 2. In this embodiment, the second functional part 4 is a closed cavity structure. The bottom surface of the second functional part 4 is a plane, and the right side surface is a slope to adapt to the spatial layout inside the vehicle body, so that the second functional part 4 forms a structure similar to a right trapezoid. The second functional part 4 can cooperate with the load-bearing part 2 to form a rigid support unit.

[0032] like Figure 1 and Figure 3 As shown, the luggage rack frame structure has an opening area 1 that runs vertically through the frame. The shape and size of the opening area 1 are determined according to actual requirements, such as a rectangular opening area 1. Installing a transparent component in the opening area 1 not only allows for visualization of the luggage's status but also reduces the overall weight of the luggage rack frame structure to some extent. To support the transparent component, mounting platforms 7 are provided within the opening area 1. The mounting platforms 7 and the transparent component work together to provide sufficient support for the luggage. In this embodiment, the mounting platforms 7 are arranged symmetrically on the left and right, each supporting one end of the transparent component. The cross-sectional shape of the mounting platforms 7 is rectangular, and the height of the mounting platforms 7 is lower than the height of the main body of the luggage rack frame structure. It is understood that in other embodiments, the number and shape of the mounting platforms 7 can be adjusted according to load-bearing requirements.

[0033] The luggage rack frame structure of this embodiment is made of composite materials, including but not limited to carbon fiber, glass fiber, basalt fiber, aramid fiber, and bio-fiber.

[0034] The main body of the luggage rack frame structure in this embodiment is a constant cross-section structure, so it can be manufactured as a whole using the pultrusion process, reducing the assembly process. Since the pultrusion process has continuous production characteristics, it can improve production efficiency. The luggage rack frame structure in this embodiment, through the cooperation of the first functional part 3, the second functional part 4, the load-bearing part 2, etc., meets the lightweight requirements while ensuring the function of the luggage rack, and can reduce assembly.

[0035] Example 2: This embodiment provides a composite material luggage rack frame structure based on pultrusion process, which differs from Embodiment 1 in that the structures of the first functional part 3 and the second functional part 4 are different.

[0036] like Figures 4-6 As shown, the first functional part 3 in this embodiment has a hexagonal structure. The left side of the first functional part 3 is an inclined surface with an obtuse angle to the working surface. The top and bottom surfaces of the first functional part 3 are both planes, and the inclined surface and the bottom surface are connected by a vertical surface 8. The upper and lower right sides of the first functional part 3 form a V-shaped structure. Through the above structure, while ensuring the supporting performance, the guiding effect on the luggage is further increased, and the luggage is prevented from falling off.

[0037] In this embodiment, the cavity connected to the first functional part 3 is a rectangular cavity.

[0038] In this embodiment, the bottom of the second functional part 4 is an open structure 9, which provides a channel for cables and pipelines (such as lighting wires and charging interface lines) to pass through and be stored. Cables can be introduced from the open and arranged along the inner wall of the cavity without the need for additional openings, thus maintaining structural integrity. At the same time, the open structure 9 can be adapted to the installation method of the decorative cover, and the bottom limit can realize the quick snap-fit ​​fixation of the decorative cover, simplifying the connection structure.

[0039] The other structures are the same as in Example 1, and will not be described again here.

[0040] Example 3: This embodiment provides a rail vehicle equipped with a composite material luggage rack frame structure based on pultrusion process as described in Embodiment 1 or Embodiment 2. The load-bearing part 2 and the second functional part 4 can be connected to the inner wall of the vehicle body by bolts.

[0041] In this embodiment, a positioning pin can be provided at the contact point between the load-bearing part 2 or the second functional part 4 and the vehicle body, and it can cooperate with the pin hole on the inner wall of the vehicle body to quickly complete the initial positioning; an elastic pad can be added between the contact surface between the luggage rack frame structure and the inner wall of the vehicle body to compensate for the small tolerance of the mounting surface, and at the same time absorb vibration and reduce abnormal noise.

[0042] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A composite material luggage rack frame structure based on pultrusion process, characterized in that, The luggage rack frame structure is a multi-cavity structure with equal cross-section formed by pultrusion process; The luggage rack frame structure has a load-bearing part at one end, and a second functional part is provided on the lower side of the load-bearing part; the luggage rack frame structure has a first functional part at the other end, and the first functional part has a protruding structure at a set angle to the working surface of the luggage rack frame structure. The luggage rack frame structure has a through opening area for installing transparent parts.

2. The composite material luggage rack frame structure based on pultrusion process according to claim 1, characterized in that, The top surface of the luggage rack frame structure is the working surface, which can be a plane or a curved surface with a set curvature.

3. The composite material luggage rack frame structure based on pultrusion process according to claim 1, characterized in that, The longitudinal cross-section of the first functional part is a polygonal structure.

4. The composite material luggage rack frame structure based on pultrusion process according to claim 3, characterized in that, The first functional part is a quadrilateral structure, and the connection surface between the first functional part and the working surface is an inclined surface, which extends to connect with the bottom surface of the luggage rack frame structure.

5. A composite material luggage rack frame structure based on pultrusion process according to claim 3, characterized in that, The first functional part has a hexagonal structure, and the interface between the first functional part and the working surface is an inclined surface. The inclined surface is connected to the bottom surface of the luggage rack frame structure through a vertical surface.

6. The composite material luggage rack frame structure based on pultrusion process according to claim 1, characterized in that, The second functional part is a closed structure.

7. The composite material luggage rack frame structure based on pultrusion process according to claim 1, characterized in that, The bottom of the second functional section is an open structure.

8. The composite material luggage rack frame structure based on pultrusion process according to claim 1, characterized in that, The opening area contains a mounting platform.

9. A composite material luggage rack frame structure based on pultrusion process according to claim 1, characterized in that, The load-bearing part is provided with multiple vertical ribs.

10. A rail vehicle, characterized in that, The luggage rack frame structure based on the pultrusion process as described in any one of claims 1-9 is installed.

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