Roof of rail vehicle

Abstract

The present invention discloses a roof cover for a rail vehicle. The roof cover for the rail vehicle includes: a cover body, a skeleton, and a edge-bonding profile. The cover body includes: a core material defining a first surface and a second surface facing away from each other; a fiberglass plate bonded to the first surface; and an aluminum alloy plate bonded to the second surface. The skeleton is made of an aluminum alloy material and is embedded in the cover body. The edge-bonding profile is bonded to the periphery of the cover body and covers the side surface of the core material. The present invention can achieve further lightweight design of the roof cover for the rail vehicle on the premise of meeting the strength requirements and insulation requirements of the roof cover for the rail vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of rail vehicles, and particularly to a roof cover of a rail vehicle. Background Art

[0002] With the multiple speed increases of domestic railway locomotives and the rapid development of high-speed railways and bullet trains, the power-concentrated multiple units, which are the main force in domestic railway main line passenger transport, have also emerged as the times require. Against the background of the extensive application and rapid development of railway locomotives, the lightweight design of rail vehicles is particularly important.

[0003] The existing roof covers of rail vehicles mainly include two types: carbon steel roof covers and aluminum alloy roof covers. Both roof covers are made of metal materials, and their insulation methods are: brushing an insulating glue layer or spraying insulating paint on the roof cover. Among them, the roof cover made of carbon steel is the heaviest, and the roof cover made of aluminum alloy is the second heaviest, and neither can meet the higher requirements for the lightweight of the locomotive roof cover. Summary of the Invention

[0004] The main purpose of the present invention is to provide a roof cover of a rail vehicle, which utilizes the insulation characteristics and bonding structure of composite materials (fiberglass reinforced plastic and foamed plastic) to achieve the insulation function of the roof cover, improve the flatness of the roof cover, enhance the lightweight effect of the roof cover, and adapt to the rapid development of rail transit without using an insulating coating.

[0005] According to one aspect of the present invention, a roof cover of a rail vehicle is provided, including: a cover body, a skeleton, and a edging profile. The cover body includes: a core material defining a first surface and a second surface facing away from each other; a fiberglass plate bonded to the first surface; and an aluminum alloy plate bonded to the second surface. The skeleton is made of aluminum alloy material and is embedded in the cover body. The edging profile is bonded to the periphery of the cover body and covers the side surface of the core material.

[0006] According to an embodiment of the present invention, the fiberglass plate extends outward relative to the core material, so that the fiberglass plate and the core material form a "7"-shaped mating portion; the edging profile includes a first "7"-shaped structure, and the first "7"-shaped structure mates with and is bonded to the "7"-shaped mating portion.

[0007] According to an embodiment of the present invention, a glue receiving groove is provided on the surface of the first "7"-shaped structure that mates with the fiberglass plate; and / or an overflow hole is provided in the portion of the first "7"-shaped structure that mates with the core material; and / or a chamfer is formed at the turning portion of the first "7"-shaped structure; and / or the edging profile further includes a second "7"-shaped structure connected to the first "7"-shaped structure, and the second "7"-shaped structure mates with the fiberglass plate; and / or the edging profile further includes a third "7"-shaped structure connected to the first "7"-shaped structure, and the third "7"-shaped structure mates with the aluminum alloy plate.

[0008] According to an embodiment of the present invention, a cavity is provided inside the cover body, and the framework is disposed inside the cavity and adhered to the wall surface of the cavity.

[0009] According to an embodiment of the present invention, a glue receiving groove is provided on the surface of the framework that mates with the wall surface of the cavity, and / or the framework is provided with glue overflow holes, and / or the framework includes a turning portion that mates with the wall surface of the cavity, and the turning portion forms a chamfer.

[0010] According to an embodiment of the present invention, the roof of the rail vehicle further includes: a pantograph mounting seat made of a non-metallic insulating material, adhered to the surface of the cover body, jointly realizing the insulating function of the upper surface of the roof of the rail vehicle without metal exposed parts; wherein, the pantograph mounting seat includes: a seat body made of a non-metallic insulating material and a metal fitting disposed on the seat body, the seat body and the fitting are adhered and compounded into one body, and at least part of the fitting protrudes relative to the surface of the seat body, and the fitting is located between the seat body and the surface of the cover body.

[0011] According to an embodiment of the present invention, the cross section of the fitting is T-shaped, and the fitting includes a base portion and a protruding portion protruding from the surface of the base portion; an installation groove is provided on the surface of the seat body, the protruding portion cooperates with the installation groove, and the base portion cooperates with the surface of the seat body on both sides of the installation groove.

[0012] According to an embodiment of the present invention, edge sealing glue is provided at the edge of the glue layer between the pantograph mounting seat and the surface of the cover body; and / or the roof of the rail vehicle further includes countersunk fasteners, and the countersunk fasteners connect the pantograph mounting seat and the framework.

[0013] According to an embodiment of the present invention, the roof of the rail vehicle further includes: a pantograph raising valve seat, embedded in the cover body; a connecting ring, sleeved on the pantograph raising valve seat and welded to the pantograph raising valve seat, and the connecting ring is embedded in the core material; a foam block, filled and adhered between the pantograph raising valve seat and the cover body and between the connecting ring and the core material.

[0014] According to an embodiment of the present invention, the fiberglass plate is provided with a mating hole, and the diameter of the mating hole is larger than the diameter of the pantograph raising valve seat, so as to form a gap between the fiberglass plate and the pantograph raising valve seat, and the roof of the rail vehicle further includes a sealing portion for sealing the gap.

[0015] The roof of a rail vehicle according to an embodiment of the present invention includes a cover body, a hemming profile, and a framework embedded in the cover body. The joint action of the hemming profile and the framework can support the cover body and enhance its strength, which is beneficial to ensuring the strength required for the roof of the rail vehicle. The cover body is designed as a sandwich core structure, where the fiberglass plate bonded to the first surface of the core material can play an insulating role and provide high strength. The framework and the hemming are made of aluminum alloy profiles. The cover body includes a fiberglass plate and an aluminum alloy plate. The overall strength and light weight of the roof of the rail vehicle are achieved through the composite bonding of various lightweight materials. At the same time, by utilizing the insulating property of fiberglass and cooperating with the insulating adhesive for bonding, the insulating performance of the roof is realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 Schematic diagram showing the cover body of the roof of a rail vehicle according to an embodiment of the present invention;

[0018] Figure 2 Schematic diagram showing the roof of a rail vehicle according to an embodiment of the present invention;

[0019] Figure 3 Schematic diagram showing the hemming profile of the roof of a rail vehicle according to an embodiment of the present invention;

[0020] Figure 4 Showing Figure 3 Schematic diagram of the bonding of the hemming profile and the cover body;

[0021] Figure 5 Schematic diagram showing the framework of the roof of a rail vehicle according to an embodiment of the present invention;

[0022] Figure 6 Showing Figure 5 Schematic diagram of the bonding of the framework and the cover body;

[0023] Figure 7 Schematic diagram showing the pantograph mounting seat of the roof of a rail vehicle according to an embodiment of the present invention;

[0024] Figure 8 Showing Figure 7 Schematic diagram of the mating part of the pantograph mounting seat;

[0025] Figure 9 Showing Figure 7 Schematic diagram of the bonding of the pantograph mounting seat and the cover body;

[0026] Figure 10 Schematic diagram showing the pantograph valve seat of the roof of a rail vehicle according to an embodiment of the present invention;

[0027] Figure 11 Showing Figure 10 Pre-bonding schematic diagram of the pantograph valve seat;

[0028] Figure 12 Showing Figure 10 Bonding schematic diagram of the pantograph valve seat. Detailed implementation manners

[0029] To make the objectives, technical solutions and advantages of the present invention more clear and understandable, the following further describes the embodiments of the present invention in detail with reference to specific embodiments and the accompanying drawings.

[0030] It should be noted that all the expressions using "first" and "second" in the embodiments of the present invention are used to distinguish two entities or parameters with the same name but different, so it can be seen that "first" and "second" are only for the convenience of expression and should not be construed as a limitation on the embodiments of the present invention. This will not be elaborated one by one in the subsequent embodiments.

[0031] The inventor realizes that the lightweight design of rail vehicles relying solely on structural design can no longer meet the requirements. It is imperative to use new composite materials, give full play to the advantages of bonding technology, and carry out the lightweight design of locomotive rail vehicles. The present invention proposes the following solutions to achieve the lightweight and modular design of the roof of a rail vehicle, improve the standardization and strength of the roof of a rail vehicle, and improve the flatness of the roof of a rail vehicle.

[0032] Figure 1 Schematic diagram showing the cover 10 of the roof 100 of a rail vehicle according to an embodiment of the present invention, Figure 2 Schematic diagram showing the roof 100 of a rail vehicle according to an embodiment of the present invention. Referring to Figure 1 and Figure 2 , the roof 100 of the rail vehicle includes: a cover 10; and a skeleton 20, the skeleton 20 is made of aluminum alloy material and is embedded in the cover 10; wherein, the cover 10 includes: a core material 12, defining a first surface and a second surface facing away from each other; a fiberglass plate 14, bonded to the first surface; and an aluminum alloy plate 16, bonded to the second surface. Figure 1 shows the adhesive layer 18 located between the core material 12 and the fiberglass plate 14 and between the core material 12 and the aluminum alloy plate 16.

[0033] The fiberglass plate 14, the core material 12, and the aluminum alloy plate 16 are stacked in sequence to form a sandwich core structure. The fiberglass plate 14 can be disposed on the top surface of the core material 12, and the aluminum alloy plate 16 can be disposed on the bottom surface of the core material 12. The fiberglass plate 14 can provide high strength, light weight, and insulation properties. The aluminum alloy plate 16 can provide light weight performance. The core material 12 can also be selected as a light weight material. The framework 20 is embedded in the cover body 10, which can play a role in supporting the cover body 10 and enhancing the strength of the cover body 10. Using aluminum alloy material for the framework 20 can achieve light weight. Generally speaking, the roof cover 100 of the rail vehicle can meet the higher requirements of lightweight design while improving the standardized strength.

[0034] The framework 20 can include cross beams, longitudinal beams, and diagonal beams, which is beneficial to providing good support and improving strength. The cross-sections of the aluminum alloy profiles in different parts of the framework 20 are the same.

[0035] Figure 3 Schematic diagram showing the edge wrapping profile 30 of the roof cover 100 of the rail vehicle according to an embodiment of the present invention. Figure 4 Showing Figure 3 Schematic diagram of the bonding of the edge wrapping profile 30 and the cover body 10. As Figures 2 to 4 shown, the roof cover 100 of the rail vehicle further includes: an edge wrapping profile 30, which is bonded to the periphery of the cover body 10 and covers the side surface of the core material 12.

[0036] In the sandwich core structure of the cover body 10, the top surface and the bottom surface of the core material 12 are respectively covered and protected by the fiberglass plate 14 and the aluminum alloy plate 16, and the side surface of the core material 12 is exposed. The edge wrapping profile 30 can play a role in covering and protecting the side surface of the core material 12.

[0037] Referring to Figure 3 and Figure 4 , the fiberglass plate 14 extends outward relative to the core material 12, so that the fiberglass plate 14 and the core material 12 form a "7"-shaped mating part; the edge wrapping profile 30 includes a first "7"-shaped structure 32, and the first "7"-shaped structure 32 mates with and is bonded to the "7"-shaped mating part.

[0038] It should be noted that the present invention does not limit the direction, positive or negative, and attitude of the "7". The "7"-shaped in the present invention covers various variants obtained by rotating, symmetrically transforming, etc. of the "7". The "7"-shaped mating part can be a structure with a "7"-shaped cross-section formed by the fiberglass plate 14 and the core material 12. The first "7"-shaped structure 32 can refer to a structure having a "7"-shaped cross-section.

[0039] By designing the first "7"-shaped structure 32 to cooperate with and bond to the "7"-shaped mating portion, it is beneficial to achieve a tight fit between the edge-banding profile 30 and the cover body 10 and increase the bonding area. The first "7"-shaped structure 32 may include a first portion that cooperates with the fiberglass plate 14 and a second portion that cooperates with the core material 12, and the second portion covers and protects the core material 12.

[0040] In some embodiments, a glue-receiving groove 31 is provided on the surface of the first "7"-shaped structure 32 that cooperates with the fiberglass plate 14. This can increase the bonding area at this location and is beneficial for improving the bonding strength.

[0041] In some embodiments, an overflow hole 33 is provided in the portion of the first "7"-shaped structure 32 that cooperates with the core material 12. Refer to Figure 4 , the adhesive overflows from the overflow hole 33, and a bonding structure similar to a rivet can be formed, which is beneficial for enhancing the bonding strength.

[0042] In some embodiments, a chamfer 35 is formed at the turning portion of the first "7"-shaped structure 32. The chamfer 35 can allow the adhesive to drain smoothly and prevent air bubbles from forming inside the glue layer.

[0043] Through the design of bonding structures such as the glue-receiving groove 31, the overflow hole 33, and the chamfer 35, the present invention can effectively enhance the bonding strength between the edge-banding profile 30 and the cover body 10 as a whole.

[0044] In some embodiments, the edge-banding profile 30 further includes a second "7"-shaped structure 34 connected to the first "7"-shaped structure 32, and the second "7"-shaped structure 34 cooperates with the fiberglass plate 14; and / or the edge-banding profile 30 further includes a third "7"-shaped structure 36 connected to the first "7"-shaped structure 32, and the third "7"-shaped structure 36 cooperates with the aluminum alloy plate 16. Multiple "7"-shaped structures are connected to each other to form a structure with multiple continuous bends as a whole, which can further achieve a tight fit between the edge-banding profile 30 and the cover body 10 and increase the bonding area.

[0045] The cross-section of the edge-banding profile 30 may include a hollow quadrilateral, and the first "7"-shaped structure 32 may be a part of the hollow quadrilateral. Designed as a hollow quadrilateral, it can reduce materials and reduce mass while ensuring strength. The cross-section of the edge-banding profile 30 further includes two extending portions connected to the hollow quadrilateral, and these two extending portions respectively form corresponding second "7"-shaped structures 34 and third "7"-shaped structures 36 with the sides of the hollow quadrilateral.

[0046] Figure 5 A schematic diagram showing the skeleton 20 of the rail vehicle roof cover 100 according to an embodiment of the present invention, Figure 6 Showing Figure 5 A schematic diagram of the bonding of the skeleton 20 and the cover body 10. Refer toFigure 5 and Figure 6 , a cavity 13 is provided inside the cover body 10, and the skeleton 20 is arranged in the cavity 13 and adhered to the wall surface of the cavity 13. The number of cavities 13 can be multiple, and the cross beams, longitudinal beams and diagonal beams of the skeleton 20 are respectively located in different cavities 13. The skeleton 20 can be a hollow structure, which is beneficial to reducing the mass.

[0047] A glue receiving groove 22 is provided on the surface of the skeleton 20 that cooperates with the wall surface of the cavity 13, and / or the skeleton 20 is provided with a glue overflow hole 24, and / or the skeleton 20 includes a turning portion that cooperates with the wall surface of the cavity 13, and the turning portion forms a chamfer 26. Similarly, the glue receiving groove 22 can increase the bonding area at this place, the glue overflow hole 33 enables the overflowed glue to form a bonding structure similar to a rivet, and the chamfer 35 can allow the adhesive to be discharged smoothly, avoiding the generation of air bubbles inside the glue layer. The settings of the glue receiving groove 22, the glue overflow hole 33 and the chamfer 35 can generally strengthen the bonding strength between the skeleton 20 and the cover body 10. Figure 5 An installation hole 28 is also shown, which is convenient for realizing the installation of the pantograph mounting seat 40 mentioned later. A wire insert can be provided in the installation hole 28.

[0048] Figure 7 A schematic diagram of the pantograph mounting seat 40 of the rail vehicle roof 100 according to an embodiment of the present invention is shown. Figure 8 Shown Figure 7 A schematic diagram of the fitting 44 of the pantograph mounting seat 40 is shown. Figure 9 Shown Figure 7 A schematic diagram of the bonding of the pantograph mounting seat 40 and the cover body 10 is shown. Referring to Figures 7 to 9 , the rail vehicle roof 100 further includes: a pantograph mounting seat 40 made of a non-metallic insulating material, which is adhered to the surface of the cover body 10 to jointly realize the insulation function of the upper surface of the rail vehicle roof 100 without metal exposed parts; wherein, the pantograph mounting seat 40 includes: a seat body 42 made of a non-metallic insulating material (such as fiberglass) and a metal fitting 44 (embedded metal part) provided on the seat body 42, and the fitting 44 at least partially protrudes relative to the surface of the seat body 42, and the fitting 44 is located between the seat body 42 and the surface of the cover body 10, and the fitting 44 and the seat body 42 are pre-bonded and combined into one body.

[0049] The seat body 42 is a fiberglass flange disc, and the protruding thickness D1 of the fitting 44 relative to the surface of the seat body 42 can be 4 mm, and multiple fittings 44 can be provided, for example, 5. The function of the fitting 44 protruding relative to the surface of the seat body 42 is to control the thickness of the glue layer 41 and improve the installation reliability. The number of pantograph mounting seats 40 is generally multiple. By controlling the thickness of the glue layer 41, the heights of multiple pantograph mounting seats 40 can be controlled, which is beneficial to realizing the coplanarity of multiple pantograph mounting seats 40. The pantograph mounting seat 40 can be adhered to the surface of the fiberglass plate 14 of the cover body 10. The glue layer 41 can be an elastic glue.

[0050] In an embodiment of the present invention, the cross-section of the fitting 44 is T-shaped. The fitting 44 includes a base portion 47 and a protruding portion 48 protruding from the surface of the base portion 47. An installation groove 49 is provided on the surface of the seat body 42. The protruding portion 48 cooperates with the installation groove 49, and the base portion 47 cooperates with the surface of the seat body 42 on both sides of the installation groove 49. The base portion 47 protrudes relative to the surface of the seat body 42, and the thickness D2 of the base portion 47 is 4 mm. Through such a setting, the reliability of the pantograph mounting seat 40 can be improved. The base portion 47 and the protruding portion 48 may be circular structures, and the radial dimension of the base portion 47 is greater than the radial dimension of the protruding portion 48.

[0051] In some embodiments, a sealing edge glue 43 is provided at the edge of the glue layer 41 between the pantograph mounting seat 40 and the surface of the cover body 10. The sealing edge glue 43 is used to eliminate stress concentration at this position and protect the glue layer 41. The glue layer 41 and the sealing edge glue 43 may be the same glue.

[0052] In some embodiments, the roof 100 of the rail vehicle further includes a countersunk fastener 45, and the countersunk fastener 45 connects the pantograph mounting seat 40 and the skeleton 20. The countersunk fastener 45 may be a countersunk screw. Connecting the pantograph mounting seat 40 and the skeleton 20 can ensure the installation strength of the pantograph mounting seat 40. The fitting 44 is provided with a countersunk hole 46 for cooperating with the countersunk fastener 45.

[0053] When the pantograph is installed and there is exactly the skeleton 20 below the pantograph installation hole, the pantograph installation bolt can pass through the reserved threaded countersunk hole 46 of the pantograph mounting seat and be directly installed on the skeleton 20, locally improving the reliability of the pantograph installation. Figure 7 46-1 shows the connection point between the pantograph mounting seat 40 and the cover body 10 when there is no skeleton 20 below the pantograph installation hole; 46-2 shows the connection point between the pantograph mounting seat 40 and the skeleton 20 through the countersunk fastener 45 when there is exactly the skeleton 20 below the pantograph installation hole.

[0054] In the installation structure of the pantograph mounting seat 40, the design of the countersunk fastener 45 is not only a redundant design of the bonding structure of the pantograph mounting seat 40, which can improve its installation reliability, but also can effectively control the bonding height of multiple pantograph mounting seats 40, as well as the co-planarity and flatness of the pantograph mounting seat. At the same time, the countersunk fastener 45 is also a fixture for bonding the pantograph mounting seat 40 and the cover body 10.

[0055] Figure 9 It is shown that after the upper surface of the roof 100 of the rail vehicle showing the example of the present invention and the pantograph mounting seat 40 are sealed by the sealing edge glue 43, an insulating structure without exposed metal is formed.

[0056] Figure 10Schematic diagram showing the pantograph valve seat 50 of the roof 100 of a rail vehicle according to an embodiment of the present invention Figure 11 Showing Figure 10 Pre-bonding schematic diagram of the pantograph valve seat 50 Figure 12 Showing Figure 10 Bonding schematic diagram of the pantograph valve seat 50. Referring to Figures 10 to 12 , the roof 100 of the rail vehicle further includes: a pantograph valve seat 50 embedded in the cover body 10; a connecting ring 52 sleeved on the pantograph valve seat 50 and welded to the pantograph valve seat 50, and the connecting ring 52 is embedded in the core material 12; a foam block filled and bonded between the pantograph valve seat 50 and the cover body 10 and between the connecting ring 52 and the core material 12. The pantograph valve seat 50 can be pre-buried in the cover body 10. The pantograph valve seat 50 and the connecting ring 52 are connected together by means of staggered fillet welding.

[0057] By providing the connecting ring 52, firstly, the bonding connection strength between the pantograph valve seat 50 and the cover body 10 can be improved; secondly, the pantograph valve seat 50 can be prevented from coming out, improving safety; thirdly, the bonding process during the overall bonding of the cover body 10 can be optimized.

[0058] By providing the foam block, it is beneficial to realize standardized design and mass production. The pantograph valve seat 50 and the connecting ring 52 are welded, and then the foam block is bonded. Finally, it participates in the overall bonding of the roof 100 to form a product. In this way, a unified standard mounting hole can be designed on the cover body 10, while the dimensions and structures of the pantograph valve seat 50 and the connecting ring 52 can be adjusted according to different technical solutions. Just by bonding a suitable foam block, the gap between the mounting hole on the cover body 10 and the pantograph valve seat 50 and the connecting ring 52 can be compensated.

[0059] Referring to Figure 12 , the pantograph valve seat 50 extends out from the inside of the cover body 10. The fiberglass plate 14 is provided with a mating hole 15, and the diameter of the mating hole 15 is larger than the diameter Φ of the pantograph valve seat 50, so as to form a gap 51 between the fiberglass plate 14 and the pantograph valve seat 50. The roof of the rail vehicle further includes a sealing portion 54 for sealing the gap 51.

[0060] The diameter of the mating hole 15 is larger than the diameter of the pantograph valve seat 50, so that the error of the hole position during bonding and compounding can be adapted. For the gap 51, the overflow glue will fill it up during bonding. When the overflow glue is completely cured, the elastic glue can be used to seal the gap 51. The elastic glue serves as the sealing portion 54, which can play a role in isolating air and protecting the internal glue layer, so that the later maintenance can be reduced and the service life of the cover body 10 and the pantograph valve seat 50 can be improved.

[0061] According to the above description, the roof cover 100 of the rail vehicle of the present invention can maximize the material properties on the premise of meeting the operating conditions of the locomotive, achieve the goals of locomotive lightweight and modular design, improve production efficiency, and enhance the standardization degree of the locomotive roof cover; use an adhesive structure to avoid welding deformation; use non-metallic materials to improve the specific strength and specific stiffness of the roof cover; while realizing the functions of waterproofing, fireproofing, sound insulation, heat insulation, and protecting in-vehicle equipment of the locomotive roof cover, install components such as pantographs, lightning arresters, and pantograph valves on the locomotive roof cover through the adhesive structure.

[0062] Generally speaking, the present invention can improve the insulation of the roof cover; achieve lightweight, with a 75% weight reduction compared to a steel roof cover and a 20% weight reduction compared to an aluminum alloy roof cover; there is no welding deformation, improving the flatness of the roof cover, and the flatness of the roof cover can be controlled within 1 mm; compared with a metal roof cover, it can improve the rigidity and specific strength of the roof cover; improve the sound insulation and heat insulation performance of the roof cover; and is conducive to batch and standardized production.

[0063] The roof cover 100 of the rail vehicle of the present invention can be used not only for passenger and freight electric locomotives, but also for power-concentrated electric multiple units, and any suitable rail vehicle.

[0064] Those of ordinary skill in the art should understand that the discussion of any of the above embodiments is only exemplary, and is not intended to imply that the scope (including the claims) disclosed by the embodiments of the present invention is limited to these examples; under the idea of the embodiments of the present invention, the technical features between the above embodiments or different embodiments can also be combined, and there are many other variations in different aspects of the embodiments of the present invention as described above, which are not provided in detail for the sake of brevity. Therefore, any omission, modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments of the present invention shall be included within the protection scope of the embodiments of the present invention.

Claims

1. An overhead cover for a rail vehicle, characterized in that, it includes: a cover body, and the cover body includes: a core material defining a first surface and a second surface facing away from each other; a fiberglass plate bonded to the first surface; an aluminum alloy plate bonded to the second surface; a skeleton made of aluminum alloy material and embedded in the cover body; and a edge-sealing profile bonded to the periphery of the cover body and covering the side surface of the core material; wherein, the fiberglass plate extends outward relative to the core material, so that the fiberglass plate and the core material form a "7"-shaped mating part; the edge-sealing profile includes a first "7"-shaped structure, and the first "7"-shaped structure mates with and is bonded to the "7"-shaped mating part; a glue-receiving groove is provided on the surface of the first "7"-shaped structure that mates with the fiberglass plate; and / or overflow holes are provided in the part of the first "7"-shaped structure that mates with the core material; and / or a chamfer is formed at the turning part of the first "7"-shaped structure; and / or the edge-sealing profile further includes a second "7"-shaped structure connected to the first "7"-shaped structure, and the second "7"-shaped structure mates with the fiberglass plate; and / or the edge-sealing profile further includes a third "7"-shaped structure connected to the first "7"-shaped structure, and the third "7"-shaped structure mates with the aluminum alloy plate.

2. The overhead cover for a rail vehicle according to claim 1, characterized in that, a cavity is provided inside the cover body, and the skeleton is arranged in the cavity and bonded to the wall surface of the cavity.

3. The overhead cover for a rail vehicle according to claim 2, characterized in that, a glue-receiving groove is provided on the surface of the skeleton that mates with the wall surface of the cavity, and / or the skeleton is provided with overflow holes, and / or the skeleton includes a turning part that mates with the wall surface of the cavity, and a chamfer is formed at the turning part.

4. The overhead cover for a rail vehicle according to claim 1, characterized in that, it further includes: a pantograph mounting seat made of non-metallic insulating material, bonded to the surface of the cover body, jointly realizing the insulation function of no metal exposed parts on the upper surface of the overhead cover for the rail vehicle; wherein, the pantograph mounting seat includes: a seat body made of non-metallic insulating material and a metal fitting arranged on the seat body, the seat body and the fitting are bonded and compounded into one body, at least part of the fitting protrudes relative to the surface of the seat body, and the fitting is located between the seat body and the surface of the cover body.

5. The overhead cover for a rail vehicle according to claim 4, characterized in that, the cross-section of the fitting is T-shaped, and the fitting includes a base part and a protruding part protruding from the surface of the base part; an installation groove is provided on the surface of the seat body, the protruding part mates with the installation groove, and the base part mates with the surface of the seat body on both sides of the installation groove.

6. The overhead cover for a rail vehicle according to claim 4, characterized in that, sealing glue is provided at the edge of the glue layer between the pantograph mounting seat and the surface of the cover body; and / or the overhead cover for the rail vehicle further includes countersunk fasteners, and the countersunk fasteners connect the pantograph mounting seat and the skeleton.

7. The overhead cover for a rail vehicle according to claim 1, characterized in that, it further includes: The bow-raising valve seat is embedded in the cover body; The connecting ring is sleeved on the bow-raising valve seat and welded to the bow-raising valve seat, and the connecting ring is embedded in the core material; The foam block is filled and bonded between the bow-raising valve seat and the cover body and between the connecting ring and the core material.

8. The roof of the rail vehicle according to claim 7, characterized in that, The fiberglass plate is provided with a mating hole, the aperture of the mating hole is larger than the diameter of the bow-raising valve seat, so as to form a gap between the fiberglass plate and the bow-raising valve seat, and the roof of the rail vehicle further includes a sealing portion for sealing the gap.

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