Roof structure and railway vehicle

Abstract

The application provides a roof structure and a railway vehicle, which comprises a roof panel assembly and two roof side beams respectively arranged on two sides of the roof panel assembly, and a mounting rib plate is connected to the bottom surface of the roof panel assembly; the two side edges of the mounting rib plate are respectively connected to the bottom surface of the roof panel assembly, and a through mounting cavity is enclosed between the mounting rib plate and the roof panel assembly; and a sound insulation layer is arranged in the mounting cavity. The roof structure provided by the application has the mounting rib plate connected to the bottom surface of the roof panel assembly, and the space between the mounting rib plate and the roof panel assembly forms a through mounting cavity; the sound insulation layer arranged in the mounting cavity can conveniently realize the sound insulation and noise reduction effect, can reduce the transmission of the noise of the air conditioning unit and the electrical equipment above the roof panel assembly to the lower part of the vehicle, can conveniently maintain the quietness of the vehicle environment, can improve the assembly efficiency of the roof structure, can provide more space for the installation of the electrical equipment above the roof panel assembly, can facilitate the layout of the air conditioning unit and the electrical equipment, and can improve the rationality of space utilization.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of roof structure, and more particularly relates to a roof structure and a railway vehicle. BACKGROUND

[0002] The roof is a key large component of the car body structure, which is usually made of double-layer thin-walled aluminum alloy, and has many advantages such as light weight, stable structure, strong corrosion resistance, etc. In order to maintain the stability of the structure, support rib structures are added between the layers of the double-layer thin-walled aluminum alloy, which causes a large amount of noise to propagate along the above solid structure, greatly increasing the noise in the car. The support rib structure and the aluminum alloy wall on both sides form a number of cavities, which also make a part of the noise propagate through the air, increasing the noise in the car.

[0003] In the prior art, in order to improve the sound insulation performance of the roof structure, the damping performance of the support ribs and the thin-walled part is improved to suppress the vibration, thereby reducing the generation and propagation of noise. For example, damping materials are pasted on the support ribs and the thin-walled side part to enhance the damping, or damping materials are filled in the cavities to suppress the generation of noise. However, due to the dense support rib structure inside the cavity, it is time-consuming and laborious to paste or fill damping materials inside the cavity, which seriously affects the production progress. SUMMARY

[0004] The present application aims to provide a roof structure and a railway vehicle, which can effectively reduce the propagation of noise in the roof area and improve the manufacturing efficiency of the roof structure.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present application is to provide a roof structure, which comprises a roof panel assembly and two roof side beams respectively located on both sides of the roof panel assembly, an installation rib plate is connected to the bottom surface of the roof panel assembly, the two side edges of the installation rib plate are respectively connected to the bottom surface of the roof panel assembly, and a horizontal through installation cavity is enclosed between the installation rib plate and the roof panel assembly, and a sound insulation layer is arranged in the installation cavity.

[0006] In a possible implementation manner, the installation cavity is horizontally through along the direction of the car body, and a plurality of groups of installation rib plates are arranged along the width direction of the car body, each group of installation rib plates comprising a plurality of installation rib plates arranged along the direction of the car body.

[0007] In a possible implementation manner, an installation hole is arranged on the roof panel assembly and vertically through, and is used for installing an air conditioning unit or an electrical equipment, a damping frame is arranged in the installation hole and close to the inner circumferential wall of the installation hole, and a sound absorbing layer is embedded on the top surface of the damping frame and extends along the circumferential direction of the damping frame.

[0008] In a possible implementation, the shock-absorbing frame comprises a vertical plate connected to the inner wall of the mounting hole in a fit manner, and a mounting seat connected to the inner side of the vertical plate, and the mounting seat is provided with a mounting cavity opening upward on the top surface thereof for mounting the sound-absorbing layer.

[0009] In some embodiments, the mounting seat is further provided with an inner mounting cavity below the mounting cavity, and the inner mounting cavity is horizontally arranged through the mounting seat along the extension direction of the mounting seat.

[0010] In a possible implementation, the roof side beam is provided with a wire harness cavity extending along the body contour and used for mounting the wire harness, and the wire harness cavity is provided with a drainage hole penetrating through the side wall close to the body center axis.

[0011] In some embodiments, the cavity bottom wall of the wire harness cavity gradually inclines downward from the side far away from the drainage hole to the side close to the drainage hole to guide the rainwater to the drainage hole.

[0012] In some embodiments, the roof side beam is provided with a wire fixing strap on the side wall close to the body center axis, and the wire fixing strap is arranged close to the upper portion of the wire harness cavity to suspend the wire harness in the wire harness cavity.

[0013] In some embodiments, two wire harness cavities are arranged in the roof side beam, the two wire harness cavities are arranged in a spaced manner in the up-down direction, and the same drainage hole penetrates through the same side wall of the two wire harness cavities.

[0014] Compared with the prior art, the roof structure provided in the embodiments of the present application is provided with a mounting rib plate connected to the bottom surface of the top plate assembly, a through mounting cavity is formed between the mounting rib plate and the top plate assembly, and the sound insulation layer arranged in the mounting cavity facilitates the sound insulation and noise reduction effect, can effectively reduce the transmission of the noise of the air conditioning unit and the electrical equipment above the top plate assembly to the lower part of the vehicle, facilitates the quietness of the vehicle environment, improves the assembly efficiency of the roof structure, provides more space for the installation of the electrical equipment above the top plate assembly, facilitates the layout of the air conditioning unit and the electrical equipment, and improves the rationality of space utilization.

[0015] The present application also provides a railway vehicle comprising the above roof structure. The railway vehicle provided with the above roof structure is provided with a mounting rib plate connected to the bottom surface of the top plate assembly, a through mounting cavity is formed between the mounting rib plate and the top plate assembly, the sound insulation layer arranged in the mounting cavity facilitates the sound insulation and noise reduction effect, reduces the transmission of the noise of the air conditioning unit and the electrical equipment above the top plate assembly to the lower part of the vehicle, and simultaneously realizes the rational utilization of the space inside the top plate assembly and the roof side beam, thereby ensuring the reasonable arrangement of the wire harness and improving the comfort of passengers. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor.

[0017] Figure 1 The structural schematic diagram of the roof structure provided by the embodiment of the present application is shown in the figure.

[0018] Figure 2 The structural schematic diagram of the roof structure provided by the embodiment of the present application is shown in the figure. Figure 1

[0019] Figure 3 The structural schematic diagram of the roof structure provided by the embodiment of the present application is shown in the figure. Figure 2

[0020] Figure 4 The structural schematic diagram of the roof structure provided by the embodiment of the present application is shown in the figure. Figure 1

[0021] Figure 5 The structural schematic diagram of the roof structure provided by the embodiment of the present application is shown in the figure. Figure 1

[0022] Figure 6 The structural schematic diagram of the roof structure provided by the embodiment of the present application is shown in the figure. Figure 1

[0023] In the figure, the various reference signs are as follows:

[0024] 1, roof plate assembly; 11, first roof plate; 12, second roof plate; 13, third roof plate; 14, mounting hole; 2, roof side beam; 21, wire harness cavity; 211, partition plate; 22, drainage hole; 23, wire fixing strap; 3, shock absorbing frame; 31, vertical plate; 32, embedded seat; 33, embedded cavity; 34, inner embedded cavity; 35, sound absorbing layer; 4, mounting rib plate; 41, sound insulation layer. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects of the present application more clearly understood, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0026] ​​​​​It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or indirectly on the other element. It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "top", "bottom", "inner", "outer", and the like indicate relative positions or orientations based on the positions or orientations shown in the drawings, and are used only to facilitate the description of the present application and simplify the description, and do not 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 a limitation on the present application. The terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or several features. In the description of the present application, the meaning of "several" is two or more, unless otherwise specifically limited.

[0027] Please refer to Figures 1 to 6 The roof structure provided by the present application will be described below. The roof structure comprises a roof panel assembly 1 and two roof side beams 2 located on both sides of the roof panel assembly 1. The bottom surface of the roof panel assembly 1 is connected with a mounting rib plate 4. The two side edges of the mounting rib plate 4 are connected to the bottom surface of the roof panel assembly 1, and a horizontal through mounting cavity is enclosed between the mounting rib plate 4 and the roof panel assembly 1. A sound insulation layer 41 is arranged in the mounting cavity.

[0028] Compared with the prior art, the roof structure provided by the present application has the mounting rib plate 4 connected to the bottom surface of the roof panel assembly 1. The space between the mounting rib plate 4 and the roof panel assembly 1 forms a through mounting cavity. The sound insulation layer 41 arranged in the mounting cavity facilitates the realization of the sound insulation and noise reduction effect, effectively reduces the noise generated by the air conditioning unit above the roof panel assembly 1, maintains the quietness of the vehicle interior, provides more space for the installation of electrical equipment above the roof panel assembly 1, facilitates the layout of the air conditioning unit and electrical equipment, and improves the rationality of space utilization.

[0029] The mounting rib plate 4 below the roof panel assembly 1 forms a horizontal through mounting cavity with the bottom surface of the roof panel assembly 1. The sound insulation layer 41 is arranged in the mounting cavity to facilitate the transmission of noise generated by the air conditioning unit and electrical equipment above the roof panel assembly 1 to the vehicle interior, thereby ensuring the comfort of passengers in the vehicle.

[0030] On this basis, in order to realize the lightweight setting of the vehicle body, the bottom of the vehicle body is made of aluminum alloy material, and under the condition of the vehicle body floor, large electrical equipment is not suitable for being installed on the bottom of the vehicle body. The air conditioning unit and electrical equipment and other components need to be installed on the upper part of the roof. The above-mentioned aluminum alloy vehicle structure can not only meet the needs of installing electrical equipment and air conditioning units, but also can set the sound insulation layer 41 through the lower mounting rib plate 4 arranged below the top plate assembly 1, so as to improve the noise environment in the vehicle and improve the comfort of passengers.

[0031] The top plate assembly 1 includes a first top plate 11, two second top plates 12 symmetrically arranged on both sides of the first top plate 11, and two third top plates 13 symmetrically arranged on both sides of the second top plate 12. The above-mentioned five plates can be spliced into a top plate assembly 1 for installing electrical equipment and air conditioning units, which reduces the difficulty of structure processing and realizes the lightweight design of the top plate assembly 1.

[0032] Specifically, the air conditioning unit is installed on the first top plate 11 and can blow air to the middle and both sides of the vehicle interior downward to realize temperature regulation in the vehicle. The first top plate 11, the second top plate 12 and the third top plate 13 are all double-layer aluminum alloy plate components, and the upper and lower aluminum alloy plates are provided with inclined reinforcing ribs, which are integrally formed with the upper and lower aluminum alloy plates, thereby improving the overall strength of the structure and facilitating effective support of electrical equipment and air conditioning units.

[0033] On this basis, the first top plate 11, the second top plate 12 and the third top plate 13 are connected by a lean cold, and the overall top plate assembly 1 is formed. The above-mentioned structure can bear most of the electrical equipment, and the top plate assembly 1 can be provided with various through holes for wire and pipeline installation.

[0034] In a possible implementation, the above-mentioned feature mounting rib plate 4 adopts the structure as shown in Figures 1 to 5 . Referring to Figures 1 to 5 , the mounting cavity penetrates horizontally along the vehicle body, and the mounting rib plate 4 is arranged in several groups in the width direction of the vehicle body, and each group of mounting rib plates 4 includes several mounting rib plates 4 arranged in the length direction of the vehicle body.

[0035] In this embodiment, the mounting rib plate 4 is provided with a plurality of mounting rib plates 4 in the length direction of the vehicle body, so that the sound insulation layer 41 is provided at different positions in the length direction of the vehicle body, so as to ensure good sound insulation and noise reduction effect. On this basis, the mounting rib plate 4 is arranged in several groups in the width direction of the vehicle body, which facilitates the arrangement of the sound insulation material in the mounting cavity, so as to perform sound insulation and noise reduction treatment on different positions in the width direction of the roof, and realize the sound insulation treatment of the top plate assembly 1.

[0036] Further, since there are more electrical equipment installed above the roof, the noise generated by the electrical equipment also increases. In order to reduce the redundant noise generated by the increase of the electrical equipment, a mounting rib plate 4 with a certain extension length is arranged in the width direction of the vehicle body, and a sound insulation layer 41 is filled in the mounting rib plate 4. The arrangement of the above-mentioned large-size mounting rib plate 4 not only improves the sound insulation capability, but also facilitates the layout of the sound insulation layer 41, and improves the assembly efficiency of the roof assembly 1.

[0037] In a possible implementation, the above-mentioned feature roof assembly 1 adopts the structure as shown in Figures 1 to 3 . Referring to Figures 1 to 3 , the roof assembly 1 is provided with a mounting hole 14 penetrating up and down and used for mounting an air conditioning unit or electrical equipment, and a shock-absorbing frame 3 is arranged in the mounting hole 14 and close to the inner circumferential wall of the mounting hole 14, and a sound-absorbing layer 35 extending along the circumference of the shock-absorbing frame 3 is embedded on the top surface of the shock-absorbing frame 3.

[0038] In this embodiment, the mounting hole of the roof assembly 1 is used for mounting an air conditioning unit or other electrical equipment, and in order to reduce the influence of the equipment noise on the vehicle interior, the shock-absorbing frame 3 is arranged in the mounting hole 14 and located below the outer periphery of the air conditioning unit or electrical equipment, and the sound-absorbing layer 35 is filled in the shock-absorbing frame 3 to reduce the transmission of the equipment noise to the vehicle interior and ensure the quietness of the vehicle interior.

[0039] Further, the sound-absorbing layer 35 is a flexible sealant strip structure and has good sealing effect, so that the roof assembly 1 has good sealing performance and facilitates the sealing of the roof interior, while meeting the functions of air supply and return air of the air conditioning unit.

[0040] The arrangement of the shock-absorbing frame 3 in combination with the layout of the sound insulation layer 41 can effectively reduce the transmission of the equipment noise above the roof assembly 1 to the vehicle interior, and the above-mentioned two structures facilitate the arrangement of the sound insulation layer 41 and the sound-absorbing layer 35, which helps to improve the installation efficiency of the sound insulation layer 41 and the sound-absorbing material and speed up the production progress.

[0041] In a possible implementation, the above-mentioned feature shock-absorbing frame 3 adopts the structure as shown in Figure 2 , Figure 3 and Figure 6 . Referring to FIGS. Figure 2 , Figure 3 and Figure 6 , the shock-absorbing frame 3 includes a vertical plate 31 attached to the inner circumferential wall of the mounting hole 14 and an embedding seat 32 connected to the inner side of the vertical plate 31, and the embedding seat 32 is provided with an embedding cavity 33 opening upward to mount the sound-absorbing layer 35 on the top surface of the embedding seat 32.

[0042] In this embodiment, the vertical plate 31 is attached to the inner circumferential wall of the mounting hole 14, and the embedding seat 32 on the inner side of the vertical plate 31 is provided with a mounting cavity for mounting the sound-absorbing layer 35. The mounting cavity is arranged on the top surface of the embedding seat 32, facilitating the installation of the sound-absorbing layer 35. Specifically, the top surface of the shock-absorbing frame 3 protrudes upward from the top surface of the top plate assembly 1, and the lower edge of the vertical plate 31 protrudes downward from the bottom surface of the top plate assembly 1, facilitating the effective communication between the air conditioning unit above and the internal passage of the roof, and achieving good refrigeration and heating effects.

[0043] In some embodiments, the above-mentioned feature embedding seat 32 adopts the structure as shown in Figure 6 . Referring to Figure 6 , the embedding seat 32 is also provided with an inner embedding cavity 34 located below the embedding cavity 33, which is horizontally arranged through the embedding seat 32 along the extension direction of the embedding seat 32.

[0044] In this embodiment, the embedding seat 32 is also provided with an inner embedding cavity 34 located below the embedding cavity 33 and extending through the front and back, and the sound-absorbing layer 35 is also installed in the inner cavity. The installation of the sound-absorbing layer 35 at the above two positions can enhance the shock-absorbing and noise-reducing effects of the shock-absorbing frame 3, and reduce the impact of noise and vibration generated during the operation of the electrical equipment or air conditioning unit above on the indoor environment.

[0045] In a possible implementation, the above-mentioned feature roof side beam 2 adopts the structure as shown in Figure 1 , Figure 2 and Figure 4 . Referring to Figure 1 , Figure 2 and Figure 4 , the roof side beam 2 has a wire harness cavity 21 extending along the direction of the vehicle body and used for mounting the wire harness, and the wire harness cavity 21 is provided with a drainage hole 22 through the side wall close to the center axis of the vehicle body.

[0046] In this embodiment, the wire harness cavity 21 is arranged in the roof side beam 2 for mounting the wire harness, facilitating the layout and installation of the wire harness, meeting the wiring requirements of the roof, achieving the rational use of space, hiding and protecting the wire harness, preventing the wire harness from being corroded and damaged due to exposure to sunlight and rain, and meeting the aesthetic requirements of the wiring.

[0047] On this basis, the wire harness cavity 21 is provided with a drainage hole 22 on the side wall, facilitating the drainage of rainwater in the wire harness cavity 21 through the drainage hole 22, avoiding the corrosion and damage of the wire harness caused by contact with rainwater. The above arrangement meets the wiring requirements of the roof, hides and protects the wire harness, protects the wire harness from being soaked in rainwater, and meets the overall aesthetic requirements of the top plate assembly 1.

[0048] In some embodiments, the above-mentioned feature wire harness cavity 21 adopts the structure as shown in Figure 1 , Figure 2 and Figure 4 . Referring toFigure 1 、 Figure 2 and Figure 4 From the side far away from the drain hole 22 to the side close to the drain hole 22, the cavity bottom wall of the wire harness cavity 21 gradually extends downward to guide the rainwater to the drain hole 22. Due to the roof exposure, in order to meet the rainwater drainage requirement, the cavity bottom wall of the wire harness cavity 21 extends downward, avoids the rainwater accumulation in the wire harness cavity 21, and makes the rainwater drain out of the roof side beam 2 to avoid the rainwater soaking the wire harness.

[0049] Further, in order to prevent the accumulation caused by excessive rainwater, the inner side wall of the roof side beam 2 close to the vehicle center axis is provided with a plurality of drain holes 22, so as to facilitate the rainwater to be discharged from the wire harness cavity 21 in time and quickly, and provide a dry installation environment for the wire harness.

[0050] In some embodiments, the above-mentioned feature roof side beam 2 adopts the structure as shown in Figure 1 、 Figure 2 and Figure 4 . Referring to Figure 1 、 Figure 2 and Figure 4 , the wire harness is provided with a wire fixing strap 23 on the side wall close to the vehicle center axis of the roof side beam 2, and the wire fixing strap 23 is arranged close to the upper part of the wire harness cavity 21, so as to suspend the wire harness in the wire harness cavity 21.

[0051] In this embodiment, the wire fixing strap 23 is installed on the side wall of the roof side beam 2, and the wire fixing strap 23 is arranged close to the upper part of the wire harness cavity 21, so as to suspend the wire harness in the inner top part of the wire harness cavity 21, and avoid the wire harness from being soaked by the rainwater. The wire fixing strap 23 is located between the adjacent two drain holes 22, and realizes the position avoidance with the drain holes 22.

[0052] In some embodiments, the above-mentioned feature wire harness cavity 21 adopts the structure as shown in Figure 1 、 Figure 2 and Figure 4 . Referring to Figure 1 、 Figure 2 and Figure 4 Figure 1 Figure 2 Figure 4 Figure 1 Figure 2 Figure 4 , two wire harness cavities 21 are arranged in the roof side beam 2, the two wire harness cavities 21 are arranged in the up-down direction, and the same drain hole 22 penetrates the same side wall of the upper and lower wire harness cavities 21.

[0053] In this embodiment, the wire harness cavity 21 is arranged in two in the up-down direction, so as to facilitate the partition accommodation of different types of wire harnesses. The wire fixing strap 23 is arranged on the side wall of each wire harness cavity 21, so as to bundle and limit the wire harness in the wire harness cavity 21. The drain hole 22 extends from the upper wire harness cavity 21 to the lower wire harness cavity 21, so as to ensure that the rainwater in the upper and lower wire harness cavities 21 can be smoothly drained.

[0054] Specifically, the upper and lower wire harness cavities 21 are separated by the partition plate 211, and the plate surface of the partition plate 211 gradually extends downward from the side far away from the drain hole 22 to the side close to the drain hole 22, so that rainwater can be easily drained from the drain hole 22.

[0055] Based on the same inventive concept, the embodiment of the present application also provides a rail vehicle comprising the roof structure. The rail vehicle provided with the roof structure has the mounting rib plate 4 connected to the bottom surface of the roof panel assembly 1, the space between the mounting rib plate 4 and the roof panel assembly 1 forms a through mounting cavity, and the sound insulation layer 41 arranged in the mounting cavity facilitates the sound insulation and noise reduction effect, reduces the transmission of noise of the upper air conditioning unit and electrical equipment to the lower car, and simultaneously realizes the reasonable utilization of the internal space of the roof panel assembly 1 and the roof side beam 2, thereby ensuring the reasonable arrangement of the wire harness and improving the comfort of passengers.

[0056] The above is only a preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A roof structure, characterized in that, The vehicle includes a roof panel assembly (1) and two roof side beams (2) located on both sides of the roof panel assembly (1). The bottom surface of the roof panel assembly (1) is connected to a mounting rib (4). The two sides of the mounting rib (4) are connected to the bottom surface of the roof panel assembly (1), and the mounting rib (4) and the roof panel assembly (1) form a horizontally penetrating mounting cavity. The mounting cavity is provided with a sound insulation layer (41). The roof side beam (2) has a wire harness cavity (21) that extends along the vehicle body and is used to install the wire harness; The top plate assembly (1) is provided with a through mounting hole (14) for installing an air conditioning unit or electrical equipment. The mounting hole (14) is provided with a shock-absorbing frame (3) located near the inner peripheral wall of the mounting hole (14). A sound-absorbing layer (35) extending circumferentially along the top surface of the shock-absorbing frame (3) is embedded in the top surface of the shock-absorbing frame (3). The shock-absorbing frame (3) includes a vertical plate (31) that fits and is connected to the inner peripheral wall of the mounting hole (14) and an insert (32) connected to the inner side of the vertical plate (31). The top surface of the insert (32) is provided with an insert cavity (33) with an upward opening for installing the sound-absorbing layer (35). The mounting base (32) is also provided with an inner cavity (34) located below the mounting cavity (33), and the inner cavity (34) is horizontally disposed through the mounting base (32) along the extension direction of the mounting base (32); The sound-absorbing layer (35) is also installed inside the embedded cavity (34).

2. The roof structure as described in claim 1, characterized in that, The mounting cavity runs horizontally through the vehicle body, and the mounting ribs (4) are arranged in several groups at intervals along the width of the vehicle body. Each group of mounting ribs (4) includes several mounting ribs (4) arranged at intervals along the vehicle body.

3. The roof structure as described in any one of claims 1-2, characterized in that, The wiring harness cavity (21) has a drainage hole (22) through it on the side wall near the vehicle's central axis.

4. The roof structure as described in claim 3, characterized in that, From the side furthest from the drain hole (22) to the side closest to the drain hole (22), the bottom wall of the wire harness cavity (21) gradually slopes downward to guide rainwater to the drain hole (22).

5. The roof structure as described in claim 4, characterized in that, The roof side beam (2) is provided with a cable tie (23) on the side wall near the central axis of the vehicle body. The cable tie (23) is provided near the upper part of the wire harness cavity (21) so that the wire harness is suspended in the wire harness cavity (21).

6. The roof structure as described in claim 5, characterized in that, Two wire harness cavities (21) are provided in the roof side beam (2). The two wire harness cavities (21) are arranged at intervals in the vertical direction. The same drainage hole (22) is provided through the same side wall of the two wire harness cavities (21).

7. A rail vehicle, characterized in that, The rail vehicle includes the roof structure as described in any one of claims 1-6.

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