Roof structure, vehicle body and railway train

Abstract

The present disclosure provides a roof structure, comprising two side beams, a plurality of beam modules, a plurality of mounting frames and a plurality of skins, the two side beams are configured to extend in a longitudinal direction and are symmetrically arranged relative to an axis of the roof structure; the plurality of beam modules are spaced apart and mounted between the two side beams in a first direction; the plurality of mounting frames are mounted between two adjacent beam modules and are suitable for mounting roof equipment, each mounting frame comprises two longitudinal beams and two transverse beams, an outer side of each longitudinal beam is provided with a first outer flange suitable for being connected with the side beam, an outer side of each transverse beam is provided with a second outer flange suitable for being connected with the beam module, and an inner side of at least one of each longitudinal beam and each transverse beam is provided with an inner flange suitable for supporting the roof equipment; and the plurality of skins are respectively mounted on the beam modules; the present disclosure also provides a vehicle body and a railway train.

Description

Technical Field

[0001] This invention relates to the field of rail train technology, and more particularly to roof structures, car bodies, and rail trains. Background Technology

[0002] The car body structure of a rail train consists of the roof and its connected side walls. In traditional material selection, the car body mainly uses carbon steel, stainless steel and aluminum alloy. Among them, aluminum alloy is widely used in intercity trains, EMU trains and some urban rail transit vehicles due to its low density and weight. Carbon steel and stainless steel are mostly used in large railway passenger cars and urban rail vehicles. With the increasing demand for energy efficiency of vehicle systems, the search for materials that are lighter and stronger than aluminum alloy for the car body structure has become the research and development direction of the rail transit manufacturing industry. Composite materials such as carbon fiber, with their high strength and low density characteristics, are being used more and more widely in vehicle systems.

[0003] Meanwhile, since traditional roof structures typically consist of two parallel roof side beams and several sets of curved beams welded between the two roof side beams, the load distribution path is not fully considered in the beam layout, which further increases the weight of the roof structure under the strength requirements of the roof.

[0004] Therefore, in order to meet the design requirements of lightweight rail train bodies, there is an urgent need for a new type of lightweight roof structure to effectively reduce the overall weight of the train body. Summary of the Invention

[0005] In view of this, this disclosure provides a lightweight roof structure based on a lightweight design concept and adopting a modular design, which further reduces the weight of the roof while meeting the roof strength requirements.

[0006] One aspect of this disclosure provides a roof structure including two side beams, a plurality of crossbeam modules, a plurality of mounting frames, and a plurality of skins. The two side beams are configured to extend longitudinally and are symmetrically arranged with respect to the axis of the roof structure. The plurality of crossbeam modules are spaced apart between the two side beams in a first direction. The plurality of mounting frames are mounted between two adjacent crossbeam modules and are adapted to mount roof equipment. Each mounting frame includes two longitudinal beams and two crossbeams. Each longitudinal beam has a first outward flange on its outer side for connection with the side beams, and each crossbeam has a second outward flange on its outer side for connection with the crossbeam modules. At least one of the longitudinal beams and each crossbeam has an inward flange on its inner side for supporting the roof equipment. The plurality of skins are respectively mounted on the crossbeam modules.

[0007] According to embodiments of this disclosure, the mounting frame further includes a sealing groove disposed on the first outer flange and the second outer flange, suitable for cooperating with the sealing strip of the roof equipment to seal the roof equipment.

[0008] According to an embodiment of the present disclosure, each of the aforementioned side beams forms a cavity inside, and at least one reinforcing rib extending in the longitudinal direction is provided in the cavity. Each of the aforementioned side beams includes: a first mounting portion disposed at the top end of the outer side of the side beam, adapted to connect the first outer flange and the skin; and a first flange disposed at the bottom end of the outer side of the side beam, adapted to connect to the side wall of the vehicle body.

[0009] According to embodiments of this disclosure, each of the aforementioned beam modules includes at least two curved beams spaced apart between the two aforementioned side beams in the aforementioned longitudinal direction and a reinforcing unit installed between two adjacent of the aforementioned curved beams.

[0010] According to an embodiment of this disclosure, the first outer flange and the adjacent first mounting portion are riveted together, and the second outer flange and the adjacent curved beam are riveted together.

[0011] According to an embodiment of this disclosure, the reinforcement unit includes a plurality of supporting longitudinal beams, which are spaced apart between two adjacent curved beams.

[0012] According to an embodiment of this disclosure, the reinforcement unit includes a plurality of supporting inclined beams configured to be symmetrically arranged with respect to the axis of the roof structure and extending inclinedly to the axis, including at least two first inclined beams with both ends connected between two adjacent curved beams; and / or at least two second inclined beams with both ends connected between adjacent curved beams and the first inclined beams, forming a triangular structure with the curved beams and the first inclined beams.

[0013] According to embodiments of this disclosure, the reinforcement unit further includes a plurality of supporting curved beams, which are installed between two adjacent supporting inclined beams and / or between adjacent supporting inclined beams and side beams.

[0014] According to embodiments of this disclosure, the aforementioned curved beam, supporting longitudinal beam, supporting inclined beam, and supporting curved beam are all constructed as hat-shaped beams, and the flanges of the aforementioned hat-shaped beams are adapted to connect the aforementioned skin.

[0015] According to embodiments of this disclosure, each of the aforementioned side beams, curved beams, supporting longitudinal beams, supporting inclined beams, and supporting curved beams is made of a composite material, including carbon fiber material.

[0016] According to embodiments of this disclosure, each of the above-described skins is configured as a carbon fiber multilayer overlay structure.

[0017] Another aspect of this disclosure provides a vehicle body including two side walls and the aforementioned roof structure, wherein the two side walls are configured to extend in the extension direction of the vehicle body and are symmetrically arranged with respect to the axis of the vehicle body, and two side beams of the aforementioned roof structure are respectively mounted on the two aforementioned side walls.

[0018] Another aspect of this disclosure provides a rail train, including the aforementioned car body.

[0019] An embodiment of this disclosure provides a roof structure including two symmetrically arranged side beams, multiple crossbeam modules, multiple mounting frames, and multiple skins. The multiple crossbeam modules and mounting frames are modularly designed and alternately installed longitudinally between the side beams. Each mounting frame consists of two longitudinal beams and two crossbeams. The outer sides of the longitudinal beams and crossbeams are respectively provided with outward flanges connecting to the side beams and crossbeam modules, while the inner sides are provided with inward flanges supporting roof equipment. The skins are installed on the crossbeam modules to form the outer contour of the roof structure. This improves the rigidity and stability of the roof, facilitates the installation and maintenance of roof equipment, and achieves roof weight reduction through optimized structural layout. Attached Figure Description

[0020] The above and other objects, features and advantages of this disclosure will become clearer from the following description of embodiments with reference to the accompanying drawings, in which:

[0021] Figure 1 The diagram schematically illustrates a first-view perspective view of a roof structure according to an embodiment of the present disclosure;

[0022] Figure 2 Schematic illustration Figure 1 A second-view perspective perspective of the roof structure shown;

[0023] Figure 3 A perspective view of the mounting frame according to an embodiment of the present disclosure is shown schematically;

[0024] Figure 4 Schematic illustration Figure 3 A partially enlarged schematic diagram of the mounting frame shown;

[0025] Figure 5 A perspective view of a mounting frame according to another embodiment of the present disclosure is shown schematically;

[0026] Figure 6 A schematic cross-sectional view illustrating the connection relationship between the side beam and the mounting frame according to an embodiment of the present disclosure is shown.

[0027] Figure 7 A schematic cross-sectional view illustrating the connection relationship between the beam module and the skin and the side beam according to an embodiment of the present disclosure is shown.

[0028] Figure 8A schematic cross-sectional view illustrating the connection relationship between the side beam and the side wall according to an embodiment of the present disclosure is shown.

[0029] Figure 9 A schematic cross-sectional view illustrating the connection relationship between the curved beam and the mounting frame according to an embodiment of the present disclosure is shown.

[0030] Figure 10 A perspective view of a beam module according to an embodiment of the present disclosure is shown schematically;

[0031] Figure 11 A perspective view of a beam module according to another embodiment of this disclosure is schematically shown;

[0032] Figure 12 A perspective view of a beam module according to yet another embodiment of the present disclosure is shown schematically;

[0033] Figure 13 A perspective view of a beam module according to another embodiment of the present disclosure is shown schematically.

[0034] Explanation of reference numerals in the attached figures

[0035] 1. Side beams;

[0036] 11. First Installation Section;

[0037] 12. First flanging;

[0038] 13. Second Installation Section;

[0039] 2. Crossbeam module;

[0040] 21. Curved beam;

[0041] 211. Second flanging;

[0042] 22. Supporting longitudinal beams;

[0043] 23. Supporting the inclined beam;

[0044] 231. First inclined beam;

[0045] 232. The second inclined beam;

[0046] 24. Supporting curved beams;

[0047] 241. Third flanging;

[0048] 3. Install the frame;

[0049] 31. Longitudinal beam;

[0050] 311. First outward flange;

[0051] 312. Inward flange;

[0052] 32. Crossbeam;

[0053] 321. Second outward flange;

[0054] 33. Sealing groove;

[0055] 4. Skin;

[0056] 5. Rivets; and

[0057] 6. Side walls. Detailed Implementation

[0058] The embodiments of the present disclosure will now be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the disclosure. In the following detailed description, numerous specific details are set forth to provide a thorough understanding of the embodiments of the present disclosure for ease of explanation. However, it will be apparent that one or more embodiments may be practiced without these specific details. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concepts of the present disclosure.

[0059] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this disclosure. The terms “comprising,” “including,” etc., as used herein indicate the presence of the stated features, steps, operations, and / or mechanisms, but do not exclude the presence or addition of one or more other features, steps, operations, or mechanisms.

[0060] All terms used herein (including technical and scientific terms) have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein are to be interpreted in a manner consistent with the context of this specification, and not in an idealized or overly rigid way.

[0061] When using expressions such as "at least one of A, B and C", they should generally be interpreted in accordance with the meaning that is commonly understood by those skilled in the art (e.g., "a system having at least one of A, B and C" should include, but is not limited to, a system having A alone, a system having B alone, a system having C alone, a system having A and B, a system having A and C, a system having B and C, and / or a system having A, B and C, etc.).

[0062] Figure 1 The diagram schematically illustrates a first-view perspective view of a roof structure according to an embodiment of the present disclosure; Figure 2 Schematic illustration Figure 1 A second-view perspective perspective of the roof structure shown; Figure 3 A perspective view of the mounting frame according to an embodiment of the present disclosure is shown schematically; Figure 4 Schematic illustration Figure 3 A partially enlarged schematic diagram of the mounting frame shown.

[0063] Embodiments of this disclosure provide a roof structure, such as Figures 1 to 4 As shown, the structure includes two side beams 1, multiple crossbeam modules 2, multiple mounting frames 3, and multiple skins 4. The two side beams 1 are configured to extend longitudinally and are symmetrically arranged with respect to the axis of the roof structure; the multiple crossbeam modules 2 are spaced apart between the two side beams 1 in a first direction; the multiple mounting frames 3 are installed between two adjacent crossbeam modules 2 and are suitable for mounting roof equipment. Each mounting frame 3 includes two longitudinal beams 31 and two crossbeams 32. The outer side of each longitudinal beam 31 is provided with a first outer flange 311 for connection with the side beam 1, and the outer side of each crossbeam 32 is provided with a second outer flange 321 for connection with the crossbeam module 2. The inner side of at least one of the longitudinal beams 31 and each crossbeam 32 is provided with an inner flange 312 for supporting the roof equipment; the multiple skins 4 are respectively mounted on the crossbeam modules 2.

[0064] Based on the above configuration, multiple crossbeam modules 2 and multiple mounting frames 3 are modularly designed and alternately installed longitudinally between the side beams 1. Each mounting frame 3 consists of two longitudinal beams 31 and two crossbeams 32. The outer sides of the longitudinal beams 31 and crossbeams 32 are respectively provided with a first outer flange 311 and a second outer flange 321 connecting to the side beams 1 and crossbeam modules 2, while the inner sides are provided with an inner flange 312 supporting the roof equipment. This improves the rigidity and stability of the roof, facilitates the installation and maintenance of the roof equipment, and achieves roof weight reduction through optimized structural layout.

[0065] In one illustrative embodiment, such as Figure 1 and Figure 2 As shown, multiple skins 4 are respectively bonded to the crossbeam module 2 to form the outer contour of the roof structure.

[0066] In one illustrative embodiment, each longitudinal beam 31 has an inner flange 312 for supporting roof equipment on its inner side, and the inner flange 312 has a pre-installation hole for fixing the roof equipment.

[0067] In one illustrative embodiment, such as Figure 4 As shown, the mounting frame 3 also includes a sealing groove 33, which is disposed on the first outer flange 311 and the second outer flange 321. The mounting frame 3 is suitable for cooperating with the sealing strip of the roof equipment to seal the roof equipment.

[0068] According to the above configuration, sealing grooves 33 are provided on the first outer flange 311 and the second outer flange 321, so that the mounting frame 3 can cooperate with the sealing strip of the roof equipment, thereby achieving the sealing of the roof equipment. This ensures the sealing performance of the roof structure after the roof equipment is installed, preventing moisture, dust and other foreign objects from entering the roof or the interior of the vehicle body through the roof structure. At the same time, it protects the roof equipment from environmental influences and extends its service life.

[0069] Figure 5 A perspective view of a mounting frame according to another embodiment of the present disclosure is shown schematically.

[0070] In one illustrative embodiment, such as Figure 3 and Figure 5 As shown, the longitudinal beam 31 is configured to have different extension dimensions in the longitudinal direction, so that the mounting frame 3 has different dimensions to install roof equipment of different sizes.

[0071] In one illustrative embodiment, the roof-mounted equipment includes an air conditioner.

[0072] In one illustrative embodiment, each longitudinal beam 31 and crossbeam 32 is made of aluminum alloy, which is lightweight, high-strength, and has good corrosion resistance, ensuring the long-term stability and durability of the roof.

[0073] In one illustrative embodiment, adjacent longitudinal beams 31 and transverse beams 32 are connected and fixed by welding. The welded connection is characterized by its continuity and uniformity, which helps to disperse the stress borne by the roof, reduce local stress concentration, and thus extend the service life of the roof.

[0074] In one illustrative embodiment, the main body, first outer flange 311, and sealing groove 33 of each longitudinal beam 31 are integrally formed; the main body, second outer flange 321, and sealing groove 33 of each cross beam 32 are also integrally formed.

[0075] Figure 6 A schematic cross-sectional view illustrating the connection relationship between the side beam and the mounting frame according to an embodiment of the present disclosure is shown. Figure 7 A schematic cross-sectional view illustrating the connection relationship between the beam module and the skin and the side beam according to an embodiment of the present disclosure is shown. Figure 8 A schematic cross-sectional view illustrating the connection relationship between the side beam and the side wall according to an embodiment of the present disclosure is shown.

[0076] In one illustrative embodiment, such as Figures 6 to 8As shown, each side beam 1 has a cavity inside, and at least one reinforcing rib extending in the longitudinal direction is provided in the cavity. Each side beam 1 includes: a first mounting part 11 and a first flange 12. The first mounting part 11 is located at the top of the outer side of the side beam 1 and is suitable for connecting the first outer flange 311 and the skin 4. The first flange 12 is located at the bottom of the outer side of the side beam 1 and is suitable for connecting the side wall 6 of the vehicle body.

[0077] According to the above-described configuration, the design of the internal cavity and reinforcing ribs significantly improves the load-bearing capacity and bending resistance of the side beam 1, helping to distribute and bear the weight of the roof and external loads. The first mounting part 11 and the first flange 12 are respectively used to connect the outer flange of the mounting frame 3, the skin 4, and the side wall 6 of the vehicle body, thereby achieving a firm connection between the roof structure itself and the vehicle body. This improves the overall structural strength of the roof and ensures good sealing performance, thus enhancing the technical effects of vehicle safety and durability.

[0078] In one illustrative embodiment, each side beam 1 is a composite material structure with a carbon fiber layup design, which has the characteristics of high stiffness and light weight.

[0079] In one illustrative embodiment, the edge of the skin 4 is bonded to the first mounting part 11. The bonding method ensures a tight connection between the skin 4 and the side beam 1, effectively preventing moisture, dust and other external impurities from entering the vehicle body, ensuring the cleanliness and dryness of the vehicle interior environment, and improving the overall waterproofness and airtightness of the vehicle.

[0080] Figure 9 A schematic cross-sectional view illustrating the connection relationship between the curved beam and the mounting frame according to an embodiment of the present disclosure is shown.

[0081] In one illustrative embodiment, such as Figure 9 As shown, each beam module 2 includes at least two curved beams 21 installed longitudinally between two side beams 1 and a reinforcing unit installed between two adjacent curved beams 21.

[0082] According to the above configuration, the reinforcement unit effectively improves the load-bearing capacity of the crossbeam module 2 and prevents the roof from deforming under impact. At the same time, by installing the curved beams 21 at intervals, the weight distribution of the roof is optimized, improving the uniformity and durability of the roof structure.

[0083] In one illustrative embodiment, such as Figure 9 As shown, the second outer flange 321 is connected to the adjacent curved beam 21.

[0084] In one illustrative embodiment, such as Figure 6 and Figure 9As shown, the first outer flange 311 and the adjacent first mounting part 11, and the second outer flange 321 and the adjacent curved beam 21 are riveted together by a plurality of rivets 5.

[0085] Based on the above setup, rivets 5 are used for riveting, ensuring a secure connection between the roof structure components and improving the overall connection strength and stability. The riveting process effectively disperses and bears stress at the connection points, reducing loosening caused by vibration or impact, thereby enhancing the safety and durability of the roof structure. Furthermore, the good sealing performance of the riveted connection helps prevent the intrusion of moisture and dust, ensuring a clean interior environment and passenger comfort.

[0086] In one illustrative embodiment, the reinforcement unit includes at least one of a supporting longitudinal beam 22, a supporting inclined beam 23, and a supporting curved beam 24. Based on the simulated structure, the topology of the structure is optimized so that the supporting longitudinal beam 22 and / or the supporting inclined beam 23 and / or the supporting curved beam 24 between two adjacent curved beams 21 extend according to the direction of force transmission of the roof structure, thereby further reducing the weight of the roof while ensuring strength.

[0087] Figure 10 A perspective view of a beam module according to an embodiment of the present disclosure is shown schematically.

[0088] In one illustrative embodiment, such as Figure 10 As shown, the multiple crossbeam modules 2 include a first crossbeam module, wherein the reinforcement unit of the first crossbeam module includes multiple supporting longitudinal beams 22, which are installed at intervals between two adjacent curved beams 21.

[0089] In one illustrative embodiment, the first crossbeam module is installed between the ends of the two side beams 1, such that the structure of the first crossbeam module's curved beam 21 plus supporting longitudinal beam 22 provides strength support for the roof structure at the ends.

[0090] Figure 11 A perspective view of a beam module according to another embodiment of this disclosure is shown schematically.

[0091] In one illustrative embodiment, such as Figure 11 As shown, the multiple crossbeam modules 2 also include a second crossbeam module, wherein the reinforcing unit of the second crossbeam module includes multiple supporting inclined beams 23, which are configured to be symmetrically arranged with respect to the axis of the roof structure and extend inclinedly to the axis. The supporting inclined beams 23 include at least two first inclined beams 231, with both ends connected between two adjacent curved beams 21; and / or at least two second inclined beams 232, with both ends connected between adjacent curved beams 21 and first inclined beams 231, and forming a triangular structure with the curved beams 21 and first inclined beams 231.

[0092] According to the above configuration, the triangular structure formed by the first inclined beam 231 and the second inclined beam 232 effectively enhances the roof's bending and torsional resistance, allowing the roof to distribute and bear loads from all directions more evenly. This not only improves the overall strength of the roof but also increases its resistance to dynamic loads, thereby enhancing vehicle safety and passenger comfort, while also extending the service life of the roof structure.

[0093] Figure 12 A perspective view of a beam module according to yet another embodiment of the present disclosure is shown schematically; Figure 13 A perspective view of a beam module according to another embodiment of the present disclosure is shown schematically.

[0094] In one illustrative embodiment, such as Figure 12 and Figure 13 As shown, the multiple crossbeam modules 2 also include a fourth crossbeam module, wherein the reinforcement unit of the fourth crossbeam module also includes multiple supporting curved beams 24, which are installed between two adjacent supporting inclined beams 23 and / or between adjacent supporting inclined beams 23 and side beams 1.

[0095] Based on the above configuration, by adding a supporting curved beam 24 to the crossbeam module 2, the overall rigidity and stability of the connection areas between the supporting inclined beams 23 and between the supporting inclined beams 23 and the side beams 1 are further enhanced. The supporting curved beam 24 helps to distribute the load borne by the roof more evenly, reducing local stress concentration and thus improving the roof's resistance to deformation. This improves the structural performance of the roof under both static and dynamic conditions, and also enhances the roof's protection against impact loads, ensuring the vehicle's safety and durability.

[0096] In one illustrative embodiment, such as Figure 12 As shown, the multiple crossbeam modules 2 also include a third crossbeam module. The reinforcement unit of the third crossbeam module includes multiple supporting longitudinal beams 22, multiple supporting diagonal beams 23, and multiple supporting curved beams 24. The combination of beams extending in different directions further improves the strength of the reinforcement unit and enhances the roof's resistance to deformation.

[0097] In one illustrative embodiment, the curved beam 21, the supporting longitudinal beam 22, the supporting inclined beam 23, and the supporting curved beam 24 are all configured as hat-shaped beams, the flanges of which are adapted to connect the skin 4.

[0098] A cap beam, also known as a crown beam or cap beam, has a cross-section resembling the shape of a cap, with a large top and a small bottom. The sides of the cap beam gradually taper inward from the top to the bottom, forming a certain slope. Flanges are also provided on both sides of the top of the cap beam, which are suitable for bearing the lateral load of the structure and providing a surface for connection with other structures.

[0099] Based on the above configuration and the arrangement of the hat-shaped beams, the roof strength is improved while further reducing the roof weight, thus increasing material utilization efficiency.

[0100] In one illustrative embodiment, such as Figure 7 and Figures 10 to 13 As shown, each curved beam 21 has a second flange 211 at both ends, which is suitable for connection with the end of the side beam 1.

[0101] In one illustrative embodiment, such as Figure 7 and Figures 10 to 13 As shown, the second flange 211 is provided on the bottom side of the end of the curved beam 21, so that the second flange 211 and the edge of the skin 4 form a concave receiving cavity, which is suitable for clamping on both sides of the top of the side beam 1.

[0102] In one illustrative embodiment, the second flange 211 is riveted or bonded to the side beam 1 by rivets 5.

[0103] According to the above configuration, the curved beam 21 can be securely connected to the side beam 1, forming a structurally strong and stable roof frame. The concave receiving cavity structure between the second flange 211 and the skin 4 can effectively clamp the top sides of the side beam 1, which not only improves the tightness and sealing of the connection, but also enhances the roof's ability to resist external loads. The riveting or bonding method of the rivets 5 further ensures the firmness of the connection, reduces wear and loosening of the connection parts, thereby improving the overall safety performance and durability of the vehicle.

[0104] In one illustrative embodiment, the end of the supporting curved beam 24 adjacent to the side beam 1 is provided with a third flange 241, which is suitable for connection to the end of the side beam 1.

[0105] In one illustrative embodiment, the third flange 241 is disposed on the bottom side of the end of the supporting curved beam 24, such that the third flange 241 and the edge of the skin 4 form a concave receiving cavity, which is suitable for clamping on both sides of the top of the side beam 1.

[0106] In one illustrative embodiment, the third flange 241 is riveted or bonded to the side beam 1 by rivets 5.

[0107] In one illustrative embodiment, each side beam 1, curved beam 21, supporting longitudinal beam 22, supporting inclined beam 23, and supporting curved beam 24 is made of composite material, including carbon fiber material.

[0108] According to the above configuration, by using carbon fiber composite materials, the weight of the roof structure is significantly reduced while maintaining extremely high strength and rigidity, thereby improving the roof's durability and fatigue resistance.

[0109] In one illustrative embodiment, each skin 4 is configured as a carbon fiber multilayer overlay structure.

[0110] Based on the above configuration, the strength and rigidity of skin 4 are improved, while the weight of skin 4 is significantly reduced, enhancing the corrosion resistance and durability of the vehicle body structure.

[0111] Another embodiment of this disclosure provides a vehicle body including two side walls 6 and a roof structure, the two side walls 6 being configured to extend in the extension direction of the vehicle body and to be symmetrically arranged with respect to the axis of the vehicle body; and two side beams 1 of the roof structure being respectively mounted on the two side walls 6.

[0112] In one illustrative embodiment, such as Figure 8 As shown, the side beam 1 also includes a second mounting part 13, which is provided at the bottom of the inner side of the side beam 1. The outer side and the top of the inner side of the side wall 6 are provided with a third mounting part and a fourth flange that cooperate with the first flange 12 and the second mounting part 13 of the side beam 1.

[0113] In one illustrative embodiment, such as Figure 8 As shown, the first flange 12 and the third mounting part are riveted or bolted together, and the second mounting part 13 and the fourth flange are connected together.

[0114] The aforementioned configuration enhances the connection stability between the side beam 1 and the side wall 6, improving the overall sealing and durability of the roof structure and the vehicle body side wall 6. The riveting or bolting connection ensures the robustness of the joints, reducing loosening due to vibration or impact, thereby improving vehicle safety and ride comfort. Furthermore, this connection method facilitates maintenance and replacement, extending the vehicle's service life.

[0115] Another embodiment of this disclosure provides a rail train, including the aforementioned car body.

[0116] Those skilled in the art will understand that the features described in the various embodiments of this disclosure can be combined and / or combined in various ways, even if such combinations or combinations are not explicitly described in this disclosure. In particular, the features described in the various embodiments of this disclosure can be combined and / or combined in various ways without departing from the spirit and teachings of this disclosure. All such combinations and / or combinations fall within the scope of this disclosure.

[0117] The embodiments of this disclosure have been described above. However, these embodiments are for illustrative purposes only and are not intended to limit the scope of this disclosure. Although various embodiments have been described above, this does not mean that the measures in the various embodiments cannot be used advantageously in combination. Various substitutions and modifications can be made by those skilled in the art without departing from the scope of this disclosure, and all such substitutions and modifications should fall within the scope of this disclosure.

Claims

1. A roof structure, characterized in that The utility model relates to a roof structure of a vehicle, comprising: two side beams (1) configured to extend in a longitudinal direction and symmetrically arranged with respect to an axis of the roof structure; a plurality of cross beam modules (2) spaced apart in a first direction between the two side beams (1), each of the cross beam modules (2) comprising at least two curved beams (21) spaced apart in the longitudinal direction between the two side beams (1) and a reinforcing unit arranged between two adjacent curved beams (21), the reinforcing unit comprising: a plurality of support inclined beams (23) configured to be symmetrically arranged with respect to the axis of the roof structure and extend obliquely to the axis, comprising: at least two first inclined beams (231) connected at two ends between two adjacent curved beams (21); at least two second inclined beams (232) connected at two ends between the curved beam (21) and the first inclined beam (231) and forming a triangular structure with the curved beam (21) and the first inclined beam (231); a plurality of support curved beams (24) arranged between two adjacent support inclined beams (23); a plurality of mounting frames (3) arranged between two adjacent cross beam modules (2) and adapted to mount roof equipment, each of the mounting frames (3) comprising two longitudinal beams (31) and two transverse beams (32), each of the longitudinal beams (31) being provided with a first outer flange (311) on an outer side thereof and adapted to be connected to the side beam (1), each of the transverse beams (32) being provided with a second outer flange (321) on an outer side thereof and adapted to be connected to the cross beam module (2), and at least one of each of the longitudinal beams (31) and each of the transverse beams (32) being provided with an inner flange (312) on an inner side thereof and adapted to support the roof equipment; and a plurality of skins (4) respectively arranged on the cross beam modules (2).

2. Roof construction according to claim 1, characterized in that The mounting frame (3) further comprises a sealing groove (33) arranged on the first outer flange (311) and the second outer flange (321) and adapted to cooperate with a sealing strip of the roof equipment to seal the roof equipment.

3. The roof structure of claim 1, wherein Each of the side beams (1) is internally formed with a cavity, and at least one reinforcing rib extending in the longitudinal direction is arranged in the cavity, each of the side beams (1) comprising: a first mounting portion (11) arranged at a top end of an outer side of the side beam (1) and adapted to connect the first outer flange (311) and the skin (4); and a first flange (12) arranged at a bottom end of the outer side of the side beam (1) and adapted to connect a side wall (6) of a vehicle body.

4. Roof construction according to claim 3, characterized in that The first outer flange (311) and the first mounting portion (11) adjacent thereto are riveted, and the second outer flange (321) and the curved beam (21) adjacent thereto are riveted.

5. The roof structure of claim 1, wherein, The reinforcing unit comprises a plurality of support longitudinal beams (22) spaced apart between two adjacent curved beams (21).

6. The roof structure of claim 1, wherein, The curved beam (21), the support longitudinal beam (22), the support inclined beam (23) and the support curved beam (24) are all configured as hat-shaped beams, and flanges of the hat-shaped beams are adapted to be connected to the skin (4).

7. The roof structure of claim 1, wherein, Each of the side beams (1), the curved beams (21), the support longitudinal beams (22), the support diagonal beams (23) and the support curved beams (24) is made of a composite material comprising carbon fiber material.

8. The roof structure of claim 1, wherein, Each of the skins (4) is configured as a carbon fiber multi-layered application structure.

9. A vehicle body characterized by comprising: Comprising: two side walls (6) configured to extend in the extension direction of the vehicle body and symmetrically arranged with respect to the axis of the vehicle body; and The roof structure of any one of claims 1 to 8, wherein two side beams (1) of the roof structure are respectively mounted on two side walls (6). A vehicle body comprising the roof structure of claim 9.

10. A rail vehicle, characterized by ​

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