Roof structure, car body and rail vehicle

Abstract

This invention relates to the field of rail vehicles, providing a roof structure, a car body, and a rail vehicle. The roof structure includes a curved beam, a roof plate, and a mounting beam. The roof plate is located on the side of the curved beam facing away from the interior of the car body, and its two sides extending longitudinally along the car body are welded to the curved beam. The mounting beam is located on the side of the roof plate facing away from the curved beam and is adapted to connect with roof-mounted equipment. The mounting beam integrates the mounting seats of various equipment, reducing the number of welding seats and avoiding welding defects caused by large welding volume and deformation. This not only improves the overall structural quality and stability of the roof and its load-bearing capacity but also increases the utilization efficiency of the roof space, simplifies the installation process of roof-mounted equipment, and reduces installation time and costs.

Description

Technical Field

[0001] This invention relates to the field of rail vehicles, and provides a roof structure, a car body, and a rail vehicle. Background Technology

[0002] Trams are mainly used for road transport, and their operating environment differs from that of high-speed trains and subways. Existing trams mostly use dedicated high-voltage power supply lines, have fewer roof-mounted devices, and their roof structures are mostly flat, facilitating equipment installation. However, for trams powered by hydrogen fuel cells, the roof-mounted devices are numerous and heavy, with a dense arrangement. Furthermore, the roofs often have arched structures, with individual devices typically requiring four mounting brackets, and heavy equipment requiring six or eight. Therefore, when there are many roof-mounted devices, the arched roof structure results in a large and complex number of mounting brackets, a large amount of welding, significant welding deformation, and a susceptibility to welding defects. Summary of the Invention

[0003] This invention provides a roof structure, vehicle body, and rail vehicle to address one of the deficiencies in related technologies. The mounting beam integrates the mounting seats of various devices, reducing the number of welding seats and avoiding welding defects caused by large welding volume and deformation. This not only improves the overall structural quality and stability of the roof and the load-bearing capacity of the roof, but also improves the utilization efficiency of the roof space, simplifies the installation process of roof equipment, and reduces installation time and cost.

[0004] The vehicle roof structure provided in this embodiment of the invention includes:

[0005] Curved beam;

[0006] The roof plate is located on the side of the curved beam facing away from the interior of the vehicle body, and the two sides of the roof plate extending along the longitudinal direction of the vehicle body are welded to the curved beam.

[0007] Mounting beam, which is disposed on the side of the roof plate opposite to the curved beam, is adapted to be connected to roof equipment.

[0008] According to one embodiment of the present invention, the top plate includes:

[0009] A protrusion protrudes in a direction away from the curved beam and extends along the longitudinal direction of the vehicle body;

[0010] A straight section extends along the longitudinal direction of the vehicle body, and two adjacent straight sections are connected by a protrusion.

[0011] According to one embodiment of the present invention,

[0012] The curved beam has bends on both sides extending along the longitudinal direction of the vehicle body;

[0013] Each of the aforementioned bends includes a first bend segment and a second bend segment;

[0014] Both of the first bending segments extend toward the direction of the top plate;

[0015] The second bend is connected to the end of the first bend, and the two second bends extend relatively close to each other along the lateral direction of the vehicle body;

[0016] The top plate is connected to the second bent section.

[0017] According to one embodiment of the present invention, it further includes:

[0018] Two side beams are respectively disposed on both sides of the curved beam along the transverse direction of the vehicle body;

[0019] The middle part of the side beam abuts against the first bending section, and the side part of the side beam is inserted between the second bending section and the top plate.

[0020] According to one embodiment of the present invention, the top surface of the mounting beam is a plane.

[0021] According to one embodiment of the present invention, the mounting beam and the top plate surround to form a sealed cavity, and the cross-sectional shape of the sealed cavity in the transverse direction is a closed rectangle.

[0022] According to one embodiment of the present invention, it further includes:

[0023] The frame, the top plate of which has an opening corresponding to the air conditioning ventilation hole;

[0024] The frame includes: a connecting part and an edge part;

[0025] The connecting part is welded to the top plate;

[0026] The edge portion is vertically arranged around the outside of the opening, and the bottom end of the edge portion is connected to the connecting portion;

[0027] A sealing ring is disposed at the top of the edge portion.

[0028] The present invention also provides a vehicle body, including the roof structure described above.

[0029] According to one embodiment of the present invention, it includes:

[0030] Side wall edge beam, the top of which is provided with a sliding groove;

[0031] Two side beams are respectively provided on both sides of the curved beam along the transverse direction of the vehicle body;

[0032] The side beam engages with the slide groove, and the side beam is adapted to slide along the longitudinal direction and the vertical direction of the vehicle body on the slide groove.

[0033] According to one embodiment of the present invention, the side beam and the groove surround to form a cavity, and the cross-sectional shape of the cavity in the transverse direction is a closed rectangle.

[0034] Embodiments of the present invention also provide a rail vehicle, including the roof structure as described above, or the vehicle body as described above.

[0035] The roof structure provided by this invention has a length direction that is longitudinal of the vehicle body and a width direction that is transverse of the vehicle body. The main body of the roof structure is composed of a curved beam, a roof plate, and a mounting beam. The curved beam and the roof plate are stacked vertically, with the curved beam located below the roof plate. The curved beam and the roof plate are connected on the side extending longitudinally of the vehicle body. The upper surface of the roof plate is the side facing away from the curved beam, and the lower surface of the roof plate is the side facing the curved beam. The mounting beam is set on the upper surface of the roof plate and can provide installation support for the roof equipment.

[0036] The roof structure features a convex, arched shape that slopes downwards from the center, providing strong load-bearing capacity for densely packed heavy equipment. Its large surface area offers ample installation space. Curved beams provide basic support for the roof, and both the curved beams and roof panels can be constructed of stainless steel, offering high structural strength and excellent corrosion resistance. The welded connection between the roof panel and the curved beams enhances the overall rigidity of the roof structure, replacing the existing composite roof panel bonding structure and improving the roof's stability and safety, thereby increasing vehicle reliability. Equipment installed on the roof is moved from below the vehicle. Appropriate mounting beams are installed on the upper surface of the roof panel, and the roof-mounted equipment is connected to these beams via fasteners, optimizing the equipment installation process and providing sufficient support.

[0037] In existing technologies, single-equipment installations typically use four mounting brackets, while heavy-duty equipment often uses six or eight. When there are many pieces of equipment on the roof, the number of mounting brackets is large and varied, resulting in extensive welding, significant welding deformation, and a high risk of welding defects. Mounting beams, however, can meet the installation requirements of most equipment, especially heavy-duty equipment. Mounting beams integrate the mounting brackets of various equipment, reducing the number of welding brackets and avoiding welding defects caused by large welding volumes and deformations. This not only improves the overall structural quality and stability of the roof and its load-bearing capacity but also increases the utilization efficiency of roof space, simplifies the installation process of roof equipment, and reduces installation time and costs. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in this 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 some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0039] Figure 1 This is a schematic diagram of the roof structure provided in an embodiment of the present invention;

[0040] Figure 2 yes Figure 1 A magnified view of part A;

[0041] Figure 3 yes Figure 1 A magnified view of part B;

[0042] Figure 4 This is a schematic diagram of the frame and sealing ring of the roof structure provided in an embodiment of the present invention;

[0043] Figure 5 This is a schematic diagram of the vehicle body structure provided in an embodiment of the present invention;

[0044] Figure 6 yes Figure 5 A magnified view of a portion of C.

[0045] Figure label:

[0046] 100. Bent beam; 110. First bend section; 120. Second bend section

[0047] 200. Top plate; 210. Protrusion; 220. Straight section;

[0048] 300. Mounting beam; 310. Sealing cavity;

[0049] 400, Side beam; 410, Middle section; 420, Side section;

[0050] 500. Frame; 510. Connecting part; 520. Edge part;

[0051] 600. Sealing ring;

[0052] 700, Side wall beam; 710, Slide groove; 720, Cavity;

[0053] 800. Roof structure. Detailed Implementation

[0054] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0055] In the description of the embodiments of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0056] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" or "linked" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0057] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0058] Furthermore, in the description of the embodiments of the present invention, unless otherwise stated, the terms "multiple", "multiple roots", and "multiple groups" mean two or more, and "several", "several roots", and "several groups" mean one or more.

[0059] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0060] like Figure 1 , Figure 2 and Figure 3 As shown, the roof structure 800 provided in this embodiment of the invention includes a curved beam 100, a roof plate 200, and a mounting beam 300; the roof plate 200 is located on the side of the curved beam 100 facing away from the interior of the vehicle body, and the two sides of the roof plate 200 extending along the longitudinal direction of the vehicle body are welded to the curved beam 100; the mounting beam 300 is disposed on the side of the roof plate 200 facing away from the curved beam 100, and the mounting beam 300 is adapted to be connected to roof equipment.

[0061] The roof structure 800 of this embodiment of the invention has a length direction that is longitudinal of the vehicle body and a width direction that is transverse of the vehicle body. The main body of the roof structure 800 is composed of a curved beam 100, a roof plate 200, and a mounting beam 300. The curved beam 100 and the roof plate 200 are stacked vertically, with the curved beam 100 located below the roof plate 200. The curved beam 100 and the roof plate 200 are connected on the side extending longitudinally of the vehicle body. The upper surface of the roof plate 200 is the side facing away from the curved beam 100, and the lower surface of the roof plate 200 is the side facing the curved beam 100. The mounting beam 300 is disposed on the upper surface of the roof plate 200 and can provide installation support for the roof equipment.

[0062] The roof structure 800 has an overall convex arc shape, higher in the middle and lower on both sides, providing strong load-bearing capacity and capable of supporting densely packed heavy equipment. Furthermore, the large area of ​​the roof plate 200 provides ample installation space for the equipment. The curved beam 100 provides basic support for the roof. Both the curved beam 100 and the roof plate 200 can be made of stainless steel, offering high structural strength and good corrosion resistance. The welded connection between the roof plate 200 and the curved beam 100 enhances the overall rigidity of the roof structure 800, replacing the existing adhesive structure of the composite roof plate 200, thus improving the stability and safety of the roof and enhancing vehicle reliability. Equipment installed on the roof can be moved from under the vehicle. Corresponding mounting beams 300 are installed on the upper surface of the roof plate 200. The roof equipment can be connected to the mounting beams 300 via fasteners, optimizing the equipment installation process and providing sufficient support for the equipment.

[0063] In existing technologies, single-equipment installations typically use four mounting brackets, while heavy-duty equipment often uses six or eight. When there are many pieces of equipment on the roof, the number of mounting brackets is large and varied, resulting in extensive welding, significant welding deformation, and a high risk of welding defects. The Mounting Beam 300, however, can meet the installation needs of most equipment, especially heavy-duty equipment. The Mounting Beam 300 integrates the mounting brackets for various pieces of equipment, reducing the number of welding brackets and avoiding welding defects caused by large welding volumes and deformations. This not only improves the overall structural quality and stability of the roof and its load-bearing capacity but also increases the utilization efficiency of roof space, simplifies the installation process of roof equipment, and reduces installation time and costs.

[0064] In this embodiment, the mounting beam 300 is connected to the top plate 200 by spot welding, which is a reliable connection method with a small amount of welding and minimal welding deformation.

[0065] According to one embodiment of the present invention, the top plate 200 includes a protrusion 210 and a straight portion 220. The protrusion 210 protrudes in a direction away from the curved beam 100 and extends along the longitudinal direction of the vehicle body. The straight portion 220 extends along the longitudinal direction of the vehicle body, and two adjacent straight portions 220 are connected by the protrusion 210.

[0066] In this embodiment, the top plate 200 mainly consists of a flat portion 220 and a raised portion 210. The flat portion 220 and the raised portion 210 are alternately arranged in the transverse direction of the vehicle body, and both the flat portion 220 and the raised portion 210 extend along the longitudinal direction of the vehicle body. The side edges of two adjacent flat portions 220 are connected by the side edges of the raised portion 210. The raised portion 210 protrudes upward, so that the entire top plate 200 forms a corrugated top plate 200 structure.

[0067] The protrusion 210 provides additional structural strength, while the flat portion 220 provides a flat surface for equipment installation, allowing the top plate 200 to maintain strength while also having a good appearance. The corrugated top plate 200 design not only increases the rigidity of the top plate 200 but also reduces the amount of material used, achieving a lightweight design. At the same time, the flat portion 220 facilitates equipment installation and improves installation efficiency.

[0068] In this embodiment, the corrugated top plate 200 can be made of stainless steel. To match the upward convex arc design of the curved beam 100, the top plate 200 can also adopt an R7000 arc shape, which has a good appearance. Moreover, the adjacent top plates 200 are connected by resistance seam welding, which results in small welding deformation and good sealing effect.

[0069] According to one embodiment of the present invention, the curved beam 100 has bends formed on both sides extending along the longitudinal direction of the vehicle body. Each bend includes a first bend segment 110 and a second bend segment 120. Both first bend segments 110 extend toward the direction of the top plate 200. The second bend segment 120 is connected to the end of the first bend segment 110. The two second bend segments 120 extend relatively close to each other along the transverse direction of the vehicle body. The top plate 200 is connected to the second bend segment 120.

[0070] In this embodiment, the curved beam 100 forms bent portions on both sides in the transverse direction of the vehicle body. That is, the curved beam 100 is connected to the roof plate 200 through the bent portions. The bent portions are composed of a first bent section 110 and a second bent section 120. That is, the side of the curved beam 100 is first bent upward to form the first bent section 110, and the end of the first bent section 110 is then bent inward to form the second bent section 120. The second bent sections 120 on both sides are arranged opposite to each other, and the edge of the roof plate 200 can cover the second bent section 120. Thus, under the action of the bent portions, the first bent section 110 is equivalent to being located between the middle main body of the curved beam 100 and the roof plate 200 with a certain distance, forming a roof structure 800 with a certain thickness. The second bent section 120 provides a connection range for the welding connection between the roof plate 200 and the curved beam 100.

[0071] The bending section of the curved beam 100 makes the connection between the roof plate 200 and the curved beam 100 more robust. The combined structure of the first bending section 110 and the second bending section 120 enhances the supporting force of the curved beam 100 and provides more connection points, making the welding between the roof plate 200 and the curved beam 100 more reliable. This improves the overall strength of the roof structure 800, enhances the connection stability between the roof plate 200 and the curved beam 100, reduces welding deformation, and extends the service life of the roof.

[0072] According to one embodiment of the present invention, the roof structure 800 further includes two side beams 400, which are respectively disposed on both sides of the curved beam 100 along the transverse direction of the vehicle body. The middle portion 410 of the side beam 400 abuts against the first bending section 110, and the side portion 420 of the side beam 400 is inserted between the second bending section 120 and the roof plate 200.

[0073] In this embodiment, the roof structure 800 consists of a curved beam 100, a roof plate 200, and two side beams 400. The side beams 400 form both sides of the roof structure 800 in the lateral direction. The side beams 400 are generally cavity-shaped profiles. The middle part 410 of the side beams 400 can be enclosed by a plate to form a cavity with a certain curvature. The side parts 420 of the side beams 400 are located on both sides of the middle part 410, and are both positions where the edges of the plates extend and connect. The two side parts 420 of the side beams 400 are arranged sequentially along the vertical direction of the vehicle body.

[0074] The vertical direction of the vehicle body is the height direction of the roof structure 800. After the side beam 400 is connected to the curved beam 100 and the roof plate 200, the upper side part 420 is inserted into the gap between the roof plate 200 and the second bending section 120. It can be connected by welding. The plate forming the cavity in the middle part 410 can abut against the surface of the first bending section 110, thereby realizing the structural positioning and support of the side beam 400. At the same time, it makes the overall structural connection of the roof plate 200, curved beam 100 and side beam 400 more compact, further improving the firmness and structural strength of the connection structure, which is conducive to the rigidity, compactness and integration of the roof structure 800.

[0075] In this embodiment, the side beam 400 includes an inner side plate and an outer side plate. The inner side plate is a plurality of straight bent plates, and the outer side plate is an arc-shaped bent plate. The two ends of the inner side plate are connected to the two ends of the outer side plate to form the side portion 420 of the side beam 400. The middle position of the inner side plate has multiple bends, and the middle position of the outer side plate has an arc-shaped bend. The multiple bends and the arc-shaped bend together form the middle portion 410 of the side beam 400 to enclose a cavity. The upper section of the inner side plate abuts against the first bend section 110.

[0076] The second bending section 120 is only welded to the roof plate 200 at its extended end. A downward recess is formed at the starting position of the extension of the second bending plate. The recess can accommodate the end of the inner side plate in the side portion 420 of the side beam 400. A gap is formed between the middle position of the extension of the second bending plate and the edge of the roof plate 200. The end of the outer side plate in the side portion 420 of the side beam 400 is inserted into the gap. Thus, while ensuring the connection effect between the side beam 400 and the roof plate 200 and the bending beam 100, the smooth appearance of the roof structure 800 can also be guaranteed.

[0077] According to one embodiment of the present invention, the top surface of the mounting beam 300 is a plane. In this embodiment, the upper surface of the mounting beam 300 is the equipment mounting surface, which is designed to be horizontal, providing a flat mounting surface for the rooftop equipment, making equipment installation more convenient and reducing the time spent on adjustment and correction during installation. The horizontal top surface of the mounting beam 300 not only improves the accuracy of equipment installation but also simplifies the installation process and reduces installation costs. At the same time, the planar design also facilitates equipment maintenance and replacement, improving the operability of the rooftop equipment.

[0078] According to one embodiment of the present invention, the mounting beam 300 and the top plate 200 surround to form a sealed cavity 310, and the cross-sectional shape of the sealed cavity 310 in the transverse direction is a closed rectangle. In this embodiment, mounting beams 300 are provided on both sides of the top plate 200 near the transverse direction of the vehicle body. The mounting beams 300 extend in the longitudinal direction of the vehicle body, and each mounting beam 300 is a U-shaped mounting beam 300. The opening of the mounting beam 300 is connected to the top plate 200, so that the sealed cavity 310 is formed between the top plate 200 and the U-shaped mounting beam 300.

[0079] The cross-section of the sealing cavity 310 is perpendicular to the longitudinal direction of the roof structure 800. The mounting beam 300 and the corrugated roof plate 200 form a closed rectangular sealing cavity 310, which can provide sufficient support strength for the equipment. When the equipment is heavy, the sealing cavity 310 of the mounting beam 300 can be locally reinforced by spot welding U-shaped plates to ensure its structural strength.

[0080] The sealed cavity 310 formed between the mounting beam 300 and the roof plate 200 not only provides installation space for the equipment but also serves as a seal, preventing moisture and dust from entering the vehicle. The closed rectangular design of the sealed cavity 310 enhances the sealing performance and facilitates the installation and disassembly of the equipment. The design of the sealed cavity 310 not only improves the waterproof and dustproof performance of the roof but also strengthens its sealing, extending its service life. Furthermore, the closed rectangular design of the sealed cavity 310 makes equipment installation more convenient and improves installation efficiency.

[0081] like Figure 4 As shown, according to an embodiment of the present invention, the roof structure 800 further includes a frame 500 and a sealing ring 600. The roof plate 200 is provided with an opening corresponding to the air conditioning ventilation hole. The frame 500 includes a connecting part 510 and an edge part 520. The connecting part 510 is welded to the roof plate 200. The edge part 520 is arranged vertically around the outside of the opening, and the bottom end of the edge part 520 is connected to the connecting part 510. The sealing ring 600 is disposed at the top end of the edge part 520.

[0082] In this embodiment, the roof panel 200 has an opening that corresponds to and communicates with the air conditioning ventilation holes on the roof. Mounting components are installed around the opening to enable air conditioning installation on the roof. The mounting components mainly consist of a frame 500 and a sealing ring 600. The frame 500 comprises a connecting part 510 and an edge part 520. The connecting part 510 can be laser-sealed and welded to the upper surface of the roof panel 200, thereby reducing the amount of sealant used and maintaining a tight seal between the frame 500 and the roof panel 200 at the opening, thus improving the sealing performance of the roof structure 800.

[0083] The edge portion 520 extends upward from the surface of the top plate 200, that is, the lower end of the edge portion 520 is connected to the connecting portion 510, and a sealing ring 600 is provided at the upper end of the edge portion 520. The sealing ring 600 ensures the sealing effect between the edge portion 520 and the air conditioner installation position, further improving the sealing performance of the roof air conditioner installation.

[0084] In this embodiment, the sealing ring 600 can be a sealing strip used for the sealing connection between the frame 500 and the air conditioner. The frame 500 is a circular frame 500, surrounding the outside of the opening. The connecting part 510 is horizontally arranged, and the edge part 520 is vertically arranged, forming an L-shaped cross-section sealing frame. The connecting part 510 is connected to the top plate 200 by laser welding, which results in less welding, less welding deformation, and higher appearance quality, improving the aesthetics of the roof. At the same time, it reduces the amount of sealant used, improves sealing performance, facilitates the installation and maintenance of the air conditioning equipment, and improves overall reliability.

[0085] The vehicle body provided by the present invention is described below. The vehicle body described below can be referred to in correspondence with the roof structure 800 described above.

[0086] like Figure 5 and Figure 6 As shown, embodiments of the present invention also provide a vehicle body, including a roof structure as described in the above embodiments.

[0087] According to one embodiment of the present invention, the vehicle body includes a side wall beam 700 and two side beams 400, the two side beams 400 being respectively disposed on both sides of the curved beam 100 along the transverse direction of the vehicle body; the top end of the side wall beam 700 is provided with a sliding groove 710; the side beam 400 cooperates with the sliding groove 710, and the side beam 400 is adapted to slide on the sliding groove 710 along the longitudinal direction and the vertical direction of the vehicle body.

[0088] In this embodiment of the invention, the side wall beams 700 are installed on both sides of the roof structure 800 along the transverse direction of the vehicle body. Specifically, the side wall beams 700 are connected to the side beams 400 of the roof structure 800. The side beams 400 not only improve the lateral stability of the roof structure 800 but also provide additional support points for the roof on the side wall beams 700, enhancing the roof structure 800's compressive strength and enabling it to withstand greater weight. A groove 710 is formed at the top of the side beam 400, extending longitudinally along the vehicle body. The middle portion 410 of the side beam 400 engages with the groove 710 and can slide along it. During the installation of the roof structure 800 and the side wall beams 700, a sliding connection can be achieved through the grooves 710 and the side beams 400, optimizing the vehicle body assembly process and solving the problem of difficult positioning and connection between the roof structure 800 and the side wall beams 700. The middle part 410 of the side beam 400 can slide vertically and longitudinally on the slide groove 710, so the roof structure 800 and the side wall beam 700 can be adjusted vertically and longitudinally during vehicle assembly, which greatly facilitates the assembly of various parts of the vehicle body.

[0089] According to one embodiment of the present invention, the side beam 400 and the groove 710 surround to form a cavity 720, and the cross-sectional shape of the cavity 720 in the transverse direction is a closed rectangle. In this embodiment, the middle part 410 of the side beam 400 is not completely embedded in the groove 710 of the side wall beam 700, and there is a certain distance between the side beam 400 and the side wall beam 700. Therefore, the lower side part 420 and the middle part 410 of the side beam 400 and the groove 710 of the side wall beam 700 together surround to form the cavity 720. The cross-section of the cavity 720 is a section perpendicular to the longitudinal direction of the vehicle body. The closed rectangular cavity 720 can further improve the structural strength of the connection position between the side beam 400 and the side wall beam 700, and is more conducive to the load transfer from the roof structure 800 to the side wall beam 700 of the vehicle body.

[0090] The cavity 720 between the side beam 400 and the slide groove 710 is designed as a closed rectangle. This design not only enhances the connection strength between the side beam 400 and the slide groove 710, but also provides additional sealing space for the vehicle body, preventing moisture and dust from entering the vehicle interior. The closed rectangular cavity 720 design not only improves the sealing performance of the vehicle body, but also enhances its structural strength and extends its service life. At the same time, this design also contributes to the aesthetics of the vehicle body, improving its overall visual appeal.

[0091] In this embodiment, the upper end of the side wall beam 700 is provided with an inward recess at the position of the side wall of the beam. The recess can accommodate the end of the inner side plate in the side portion 420 of the side beam 400. A certain distance is formed between the lower part of the inner side plate and the groove to form a cavity 720.

[0092] The rail vehicle provided by the present invention is described below. The rail vehicle described below can be referred to in correspondence with the car body described above.

[0093] This invention also provides rail vehicles, such as the roof structure of the above embodiments, or the vehicle body of the above embodiments.

[0094] The rail vehicle of this invention, which can be a tram, features a high-strength arc-shaped roof structure 800, facilitating overall assembly and improving both overall performance and manufacturing and maintenance. This results in higher reliability and safety, while also enhancing comfort and aesthetics. Furthermore, the optimized body structure design helps reduce operating costs and improves the rail vehicle's market competitiveness.

[0095] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A vehicle roof structure, characterized in that, include: Curved beam (100); A top plate (200) is located on the side of the curved beam (100) facing away from the interior of the vehicle body, and the two sides of the top plate (200) extending along the longitudinal direction of the vehicle body are welded to the curved beam (100). Mounting beam (300), the mounting beam (300) is disposed on the side of the top plate (200) facing away from the curved beam (100), the mounting beam (300) is adapted to be connected to roof equipment; Two side beams (400) are respectively disposed on both sides of the curved beam (100) along the transverse direction of the vehicle body; The side beam (400) is adapted to cooperate with the slide groove (710) provided at the top of the side wall beam (700) of the vehicle body, and the side beam (400) is adapted to slide on the slide groove (710) along the longitudinal direction and the vertical direction of the vehicle body.

2. The roof structure according to claim 1, characterized in that, The top plate (200) includes: A protrusion (210) protrudes in a direction away from the curved beam (100) and extends along the longitudinal direction of the vehicle body; A straight section (220) extends along the longitudinal direction of the vehicle body, and two adjacent straight sections (220) are connected by a protrusion (210).

3. The roof structure according to claim 1, characterized in that, The curved beam (100) has bent portions on both sides extending along the longitudinal direction of the vehicle body; Each of the aforementioned bends includes a first bend segment (110) and a second bend segment (120); Both of the first bending segments (110) extend in the direction of the top plate (200); The second bend segment (120) is connected to the end of the first bend segment (110), and the two second bend segments (120) extend relatively close to each other in the transverse direction of the vehicle body; The top plate (200) is connected to the second bent section (120).

4. The roof structure according to claim 3, characterized in that, The middle part (410) of the side beam (400) abuts against the first bent section (110), and the side part (420) of the side beam (400) is inserted between the second bent section (120) and the top plate (200).

5. The roof structure according to claim 1, characterized in that, The top surface of the mounting beam (300) is a plane.

6. The roof structure according to claim 1, characterized in that, The mounting beam (300) and the top plate (200) surround and form a sealed cavity (310), and the cross-sectional shape of the sealed cavity (310) in the transverse direction is a closed rectangle.

7. The roof structure according to any one of claims 1 to 6, characterized in that, Also includes: The frame (500) has an opening on the top plate (200) corresponding to the air conditioning ventilation hole; The frame (500) includes: a connecting part (510) and an edge part (520); The connecting part (510) is welded to the top plate (200); The edge portion (520) is arranged vertically around the outside of the opening, and the bottom end of the edge portion (520) is connected to the connecting portion (510). A sealing ring (600) is disposed at the top of the edge portion (520).

8. A vehicle body, characterized in that, The roof structure includes any one of claims 1 to 7.

9. The vehicle body according to claim 8, characterized in that, include: The side wall edge beam (700) has a groove (710) at its top.

10. The vehicle body according to claim 9, characterized in that, The side beam (400) and the groove (710) surround to form a cavity (720), and the cross-sectional shape of the cavity (720) in the transverse direction is a closed rectangle.

11. A rail vehicle, characterized in that, The vehicle includes the roof structure described in any one of claims 1 to 7, or the vehicle body described in any one of claims 8 to 10.

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