Railway vehicle and detachable double-layer top cover thereof

Abstract

The utility model discloses a railway vehicle and a detachable double-layer top cover thereof, and relates to the technical field of railway vehicles, in order to solve the problem that the comfort of the passenger room space of the existing railway vehicle is not high, the detachable double-layer top cover comprises a vehicle body, end walls are arranged at the two ends of the vehicle body, ventilation openings are formed in the end walls, and an inner top structure is of a plane structure. The inner roof structure is detachably arranged at the top of the vehicle body and extends in the length direction of the vehicle body, detachable vehicle-mounted equipment is installed on the inner roof structure and connected with the ventilation opening through a pipeline, and the outer roof structure is of an arch structure, detachably arranged at the top of the vehicle body and arranged outside the inner roof structure in a sleeving mode. The outer top structure extends in the length direction of the vehicle body, through the design of the double-layer top cover, the vehicle-mounted equipment is installed in the interlayer space between the double-layer top cover, the installation space of the vehicle-mounted equipment and the passenger room space can be effectively separated, the situation that the passenger room space is occupied by the vehicle-mounted equipment is avoided, and the comfort of the passenger room space is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rail vehicles, and more specifically, to a rail vehicle and its detachable double-layer top cover. Background Art

[0002] Considering different design requirements of rail vehicles, the layout of on-vehicle equipment is also different.

[0003] For on-vehicle equipment with high waterproof level requirements in existing rail vehicles, it is generally installed in the machinery room of the rail vehicle. To perform maintenance work, it is necessary to first remove the cables and pipelines on the top cover of the rail vehicle, then remove the top cover, and finally replace or maintain the on-vehicle equipment. The disassembly and assembly efficiency is low, and the maintainability is insufficient. For on-vehicle equipment with high waterproof level, it can be arranged on the roof of the rail vehicle to solve the above problems, but there is an external phenomenon of on-vehicle equipment, and the aesthetics is poor. Moreover, for on-vehicle equipment with low waterproof level, it still needs to be placed in the machinery room. Therefore, the solution of arranging on-vehicle equipment with high waterproof level on the roof of the rail vehicle and placing on-vehicle equipment with low waterproof level in the machinery room still cannot completely solve the problems of low disassembly and assembly efficiency and insufficient maintainability of on-vehicle equipment.

[0004] In existing rail vehicles, there are also cases where on-vehicle equipment with high waterproof level requirements is directly placed in the passenger compartment space, which can solve the problems of low disassembly and assembly efficiency and insufficient maintainability of on-vehicle equipment. However, the on-vehicle equipment will occupy the passenger compartment space and there are problems such as noise and radiation, thus affecting the comfort of the passenger compartment space.

[0005] Therefore, how to solve the problem of low comfort of the passenger compartment space in existing rail vehicles is an urgent problem to be solved by those skilled in the art at present. Summary of the Utility Model

[0006] In view of this, the purpose of the utility model is to provide a detachable double-layer top cover for a rail vehicle. Through the design of the double-layer top cover, the on-vehicle equipment is installed in the sandwich space between the double layers of the top cover, and the installation space of the on-vehicle equipment can be effectively separated from the passenger compartment space to avoid the on-vehicle equipment occupying the passenger compartment space and improve the comfort of the passenger compartment space.

[0007] Another purpose of the utility model is to provide a rail vehicle including the detachable double-layer top cover described above. The on-vehicle equipment is installed in the sandwich space between the double layers of the top cover, separating the installation space of the on-vehicle equipment from the passenger compartment space and improving the comfort of the passenger compartment space.

[0008] To achieve the above purpose, the utility model provides the following technical solutions:

[0009] A detachable double-layer top cover for a rail vehicle, comprising:

[0010] The car body has end walls at both ends, and ventilation openings are provided on the end walls.

[0011] The inner roof structure is a flat structure and is detachably provided on the top of the car body. The inner roof structure extends along the length direction of the car body, and detachable on-vehicle equipment is installed on the inner roof structure. The on-vehicle equipment is connected to the ventilation opening through a pipeline.

[0012] The outer roof structure is an arched structure and is detachably provided on the top of the car body and sleeved outside the inner roof structure. The outer roof structure extends along the length direction of the car body.

[0013] Preferably, the inner roof structure includes at least two inner roof covers, and the outer roof structure includes at least two outer roof covers. An arched water guide bent beam matching with the outer roof cover is provided between adjacent two outer roof covers. The water guide bent beam is a U-shaped beam and is connected to the chord beam. The chord beam is an L-shaped structure and is provided on both sides of the top of the car body. The outer roof cover includes an arched skeleton detachably provided on the chord beam and a skin provided on the arched skeleton. The skin is connected to the arched skeleton through a backing plate. Water retaining edges are provided at the ends of adjacent two skins, and the water retaining edges are all arranged inside the water guide bent beam.

[0014] Preferably, the arched skeleton includes:

[0015] Two roof edge beams, which are detachably provided on the corresponding chord beams and extend along the length direction of the car body.

[0016] The first bent beam structure is an arched structure, is provided at both ends of the roof edge beam and is connected to the roof edge beam. The first bent beam structure is arranged parallel to the end wall.

[0017] The second bent beam structure is an arched structure. Multiple groups of the second bent beam structures are provided and are connected to the roof edge beam. Multiple groups of the second bent beam structures are all parallel to the end wall and are arranged between the first bent beam structures.

[0018] Two groups of the first cross beam structures are provided. The two groups of the first cross beam structures are both parallel to the roof edge beam and are provided on the top of the second bent beam structure. The first cross beam structure is connected to the second bent beam structure and the first bent beam structure.

[0019] Multiple groups of the second cross beam structures are provided. Multiple groups of the second cross beam structures are all parallel to the roof edge beam. Multiple groups of the second cross beam structures are evenly arranged between the corresponding first cross beam structure and the roof edge beam. The second cross beam structure is connected to the second bent beam structure and the first bent beam structure.

[0020] Preferably, the first bent beam structure, the second bent beam structure and the first cross beam structure all include multiple connected U-shaped beams, and the two ends of the U-shaped beams of the first cross beam structure are connected to the U-shaped beams of the corresponding first bent beam structure and the second bent beam structure. The second cross beam structure includes multiple connected L-shaped beams, and the two ends of the L-shaped beams are connected to the U-shaped beams of the corresponding first bent beam structure and the second bent beam structure.

[0021] Preferably, a lifting pad is provided at the intersection top of the first curved beam structure and the first cross beam structure, and the lifting pad is provided with a threaded hole for inserting and pulling out a lifting ring bolt.

[0022] Preferably, the outer top cover is provided with a maintenance opening and a detachable maintenance accessory arranged at the maintenance opening. The maintenance accessory is arranged on the first cross beam structure through a flange. The maintenance accessory includes a maintenance cover plate detachably arranged at the maintenance opening, and also includes a sealing gasket for sealing the maintenance cover plate and the flange. The flange is provided with a step for installing the maintenance cover plate and the sealing gasket, and also provided with a counterbore with the same thickness as the skin.

[0023] Preferably, both the inner top cover and the top cover side beam are connected to the chord beam through top cover installation accessories. The chord beam is provided with an installation rail for cooperating with the top cover installation accessories. The top cover installation accessories include T-shaped bolts arranged on the installation rail. The T-shaped bolts are threadedly connected to both the inner top cover and the top cover side beam. A gasket assembly is arranged on the T-shaped bolts. The top cover side beam is provided with a plurality of installation grooves for installing the top cover installation accessories. A detachable sealing plate accessory is arranged at the notch of the installation groove, and the sealing plate accessory is connected to a sealing plate support in the installation groove.

[0024] Preferably, a top cover positioning accessory is further arranged in the installation groove close to the water guiding curved beam. The top cover positioning accessory is connected to the sealing plate in the installation groove. The top cover positioning accessory includes a positioning bolt and a locking nut, and the end of the positioning bolt abuts against the water guiding curved beam.

[0025] Preferably, the end wall includes a wall body arranged at both ends of the vehicle body and columns arranged on both sides of the wall body. A wall body curved beam for connecting two columns is arranged at the top of the columns. The wall body curved beam is connected to the columns through transition blocks. Water baffle plates are arranged on the inner sides of both the wall body curved beam and the transition blocks. A reinforcing curved beam with a clearance fit with the wall body curved beam and the transition blocks is arranged at one end of the skin close to the end wall.

[0026] A rail vehicle includes a plurality of connected vehicle bodies, and any one of the vehicle bodies is provided with a detachable double-layer top cover of the rail vehicle described in any one of the above items.

[0027] The detachable double-layer roof of the rail vehicle provided by the utility model comprises a vehicle body, an inner roof structure and an outer roof structure. Specifically, the inner roof structure is a planar structure, and the outer roof structure is an arched structure. The inner roof structure and the outer roof structure are detachably arranged on the top of the vehicle body, and the outer roof structure is sleeved outside the inner roof structure, forming a space interlayer between the inner roof structure and the outer roof structure. Removable vehicle-mounted equipment is installed on the inner roof structure. Both the inner roof structure and the outer roof structure extend along the length direction of the vehicle body, providing sufficient space for installing vehicle-mounted equipment to avoid setting up a separate equipment room. Through the design of the outer roof structure and the inner roof structure, the vehicle-mounted equipment can be hidden and not directly exposed to the air, which not only has an aesthetic effect, but also can protect the vehicle-mounted equipment with a low waterproof level. Moreover, there is no need to occupy the passenger compartment space to install the vehicle-mounted equipment, so as to improve the comfort of the passenger compartment space. End walls are provided at both ends of the vehicle body, ventilation openings are provided on the end walls, and the vehicle-mounted equipment is connected to the ventilation openings through pipelines, so that the heat dissipation of the vehicle-mounted equipment can be realized.

[0028] When installing the vehicle-mounted equipment, first hoist and install the inner roof structure on the top of the vehicle body, then hoist and install the vehicle-mounted equipment on the inner roof structure, and finally hoist and install the outer roof structure and ensure that the outer facade of the outer roof structure is flush with the plane of the end wall to realize the installation of the double-layer roof. Through the special design of the outer roof structure and the inner roof structure, the vehicle-mounted equipment can be installed in the interlayer space formed by the outer roof structure and the inner roof structure, without occupying the passenger compartment space, so as to improve the comfort of the passenger compartment space. Description of the Drawings

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model 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 the embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0030] Figure 1 It is a schematic structural diagram of the detachable double-layer roof of the rail vehicle provided by the present utility model;

[0031] Figure 2 It is an exploded view of the detachable double-layer roof of the rail vehicle provided by the present utility model;

[0032] Figure 3 It is a side view of the detachable double-layer roof of the rail vehicle provided by the present utility model;

[0033] Figure 4 It is a partial schematic diagram of the detachable double-layer roof of the rail vehicle provided by the present utility model;

[0034] Figure 5Partial schematic diagram of the outer top structure provided by the present utility model;

[0035] Figure 6 Installation schematic diagram of the water diversion curved beam provided by the present utility model;

[0036] Figure 7 Cross-sectional view of the water diversion curved beam provided by the present utility model;

[0037] Figure 8 Structural schematic diagram of the arched framework provided by the present utility model;

[0038] Figure 9 Partial cross-sectional view of the lifting cushion block provided by the present utility model;

[0039] Figure 10 Exploded view of the maintenance accessory provided by the present utility model;

[0040] Figure 11 Installation cross-sectional view of the maintenance accessory provided by the present utility model;

[0041] Figure 12 Installation schematic diagram of the inner top structure provided by the present utility model;

[0042] Figure 13 Structural schematic diagram of the top cover installation accessory provided by the present utility model;

[0043] Figure 14 Installation schematic diagram of the installation rail provided by the present utility model;

[0044] Figure 15 Installation schematic diagram of the sealing plate accessory provided by the present utility model;

[0045] Figure 16 Another installation schematic diagram of the inner top structure provided by the present utility model;

[0046] Figure 17 Installation schematic diagram of the top cover positioning accessory provided by the present utility model;

[0047] Figure 18 Another installation schematic diagram of the top cover positioning accessory provided by the present utility model;

[0048] Figure 19 Structural schematic diagram of the end wall provided by the present utility model;

[0049] Figure 20 Partial enlarged view of the end wall provided by the present utility model;

[0050] Figure 21 Structural schematic diagram of the rainwater flow direction of the end wall provided by the present utility model.

[0051] Reference Signs:

[0052] 01 - Vehicle-mounted device;

[0053] 1 - Vehicle body;

[0054] 2 - End wall, 21 - Vent, 22 - Wall body, 23 - Column, 24 - Wall bent beam, 25 - Transition block, 26 - Water baffle, 27 - Reinforcing bent beam;

[0055] 3 - Inner roof structure;

[0056] 4 - Outer roof structure, 41 - Arch-shaped framework, 411 - Roof edge beam, 412 - First bent beam structure, 413 - Second bent beam structure, 414 - First cross beam structure, 415 - Second cross beam structure, 416 - Lifting pad, 42 - Skin, 421 - Water-retaining edge, 43 - Padding plate;

[0057] 5 - Water guide bent beam;

[0058] 6 - Chord beam;

[0059] 7 - Eye bolt;

[0060] 8 - Maintenance accessory, 81 - Maintenance cover plate, 82 - Sealing gasket, 83 - Countersunk head bolt;

[0061] 9 - Flange;

[0062] 10 - Roof installation accessory, 101 - T-bolt, 102 - Gasket assembly;

[0063] 11 - Installation rail;

[0064] 12 - Installation groove;

[0065] 13 - Sealing plate accessory;

[0066] 14 - Sealing plate support;

[0067] 15 - Roof positioning accessory, 151 - Positioning bolt, 152 - Locking nut;

[0068] 16 - Sealing plate;

[0069] 17 - Support rib;

[0070] 18 - Reinforcing plate. Detailed implementation manners

[0071] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0072] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation" and other terms shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0073] It should be noted that the following orientation terms such as "inside" and "outside" are defined based on the accompanying drawings of the specification.

[0074] The core of the present utility model is to provide a detachable double-layer top cover for a rail vehicle. Through the design of the double-layer top cover, the on-vehicle equipment 01 is installed in the sandwich space between the double-layer top covers, which is convenient for maintaining the on-vehicle equipment 01. The on-vehicle equipment 01 can be separated from the passenger compartment space to avoid the on-vehicle equipment 01 occupying the passenger compartment space and improve the comfort of the passenger compartment space. Another core of the present utility model is to provide a rail vehicle including the detachable double-layer top cover of the above-mentioned rail vehicle. Installing the on-vehicle equipment 01 in the sandwich space between the double-layer top covers is beneficial to the maintenance of the on-vehicle equipment 01, separates the on-vehicle equipment 01 from the passenger compartment space, and improves the comfort of the passenger compartment space.

[0075] Please refer to Figure 1 、 Figure 2 and Figure 3 , a detachable double-layer top cover for a rail vehicle includes a vehicle body 1, an inner top structure 3 and an outer top structure 4.

[0076] Specifically, the inner roof structure 3 is a planar structure, and the outer roof structure 4 is an arched structure. Both the inner roof structure 3 and the outer roof structure 4 are detachably arranged on the top of the vehicle body 1, and the outer roof structure 4 is sleeved outside the inner roof structure 3, forming a space interlayer between the inner roof structure 3 and the outer roof structure 4. A detachable vehicle-mounted device 01 is installed on the inner roof structure 3. Both the inner roof structure 3 and the outer roof structure 4 extend along the length direction of the vehicle body 1, providing sufficient space for installing the vehicle-mounted device 01 to avoid setting up a separate equipment room. Through the design of the outer roof structure 4 and the inner roof structure 3, the vehicle-mounted device 01 can be hidden and not directly exposed to the air, which not only has an aesthetic effect but also can protect the vehicle-mounted device 01 with a low waterproof grade. Moreover, there is no need to occupy the passenger compartment space to install the vehicle-mounted device 01, so as to improve the comfort of the passenger compartment space. End walls 2 are provided at both ends of the vehicle body 1, and ventilation openings 21 are provided on the end walls 2. The vehicle-mounted device 01 is connected to the ventilation openings 21 through pipes, and heat dissipation of the vehicle-mounted device 01 can be achieved.

[0077] When installing the vehicle-mounted device 01, first hoist and install the inner roof structure 3 on the top of the vehicle body 1, then hoist and install the vehicle-mounted device 01 on the inner roof structure 3, and finally hoist and install the outer roof structure 4 and ensure that the outer facade of the outer roof structure 4 is flush with the plane of the end wall 2 to achieve the installation of the double-layer roof. Through the special design of the outer roof structure 4 and the inner roof structure 3, the vehicle-mounted device 01 can be installed in the interlayer space formed by the outer roof structure 4 and the inner roof structure 3, which is not only aesthetic but also waterproof and does not occupy the passenger compartment space, so as to improve the comfort of the passenger compartment space.

[0078] Existing vehicles generally have louver ventilation openings 21 opened on the side walls of the vehicle body 1, and this design has poor aesthetics. For vehicles with double-layer roofs, since the equipment is arranged on the inner roof structure 3, and because the vehicle-mounted device 01 needs ventilation, the ventilation openings 21 can be adjusted to the end walls 2, and the interlayer between the inner roof structure 3 and the outer roof structure 4 can be set as a ventilation channel, which has better aesthetics.

[0079] The design of the inner roof structure 3 and the outer roof structure 4 reduces the waterproof grade requirements of the vehicle-mounted device 01, can ensure that rainwater cannot enter the interlayer space between the inner roof structure 3 and the outer roof structure 4, solves the hidden dangers brought to electrical equipment by water leakage and the risk of structural corrosion caused by rainwater, and plays a key role in maintaining the stable operation of in-vehicle equipment.

[0080] The detachable double-layer roof of the rail vehicle set in the above manner can improve the aesthetics of the vehicle, enhance the waterproof effect on the on-vehicle equipment 01. The installation of the inner roof structure 3 and the outer roof structure 4 both adopts detachable and split design, which is convenient for the maintenance and repair of the on-vehicle equipment 01. The sandwich space between the inner roof structure 3 and the outer roof structure 4 can be used to install the on-vehicle equipment 01. The design of the double-layer roof effectively separates the installation space of the on-vehicle equipment 01 from the passenger compartment space, with good heat insulation and noise reduction effects, and the radiation generated by the on-vehicle equipment 01 can also be effectively reduced, thereby improving the comfort of the vehicle personnel.

[0081] Please refer to Figure 2 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 , the inner roof structure 3 includes at least two inner roof covers, the outer roof structure 4 includes at least two outer roof covers. An arched water guide beam 5 that cooperates with the outer roof cover is provided between two adjacent outer roof covers. The water guide beam 5 is a U-shaped beam and is connected to the chord beam 6. The chord beam 6 is an L-shaped structure and is arranged on both sides of the top of the vehicle body 1. The outer roof cover includes an arched skeleton 41 detachably arranged on the chord beam 6 and a skin 42 arranged on the arched skeleton 41. The skin 42 is connected to the arched skeleton 41 through a backing plate 43. A water retaining edge 421 is provided at the end of each two adjacent skins 42, and the water retaining edges 421 are all arranged within the water guide beam 5.

[0082] It should be noted that the outer roof cover has a good waterproof function, the inner roof cover has a good sealing performance. The installation interfaces of the on-vehicle equipment 01 (including cables, pipelines, etc.) are all arranged on the inner roof cover, and there is no installation interface between the outer roof cover and the on-vehicle equipment 01. Each outer roof cover and inner roof cover can be hoisted independently and do not affect each other.

[0083] The outer roof cover adopts the structure of the arched skeleton 41 and the skin 42. By setting the backing plate 43 on the arched skeleton 41, the deformation of the skin 42 caused by welding is effectively reduced, and the flatness of the skin 42 is improved. A skeleton stiffener is arranged at the position of the arched skeleton 41 far from the bending angle of the skin 42 to further improve the flatness of the outer contour of the outer roof cover. A water guide beam 5 is provided between two adjacent outer roof covers. The water guide beam 5 is welded to the chord beam 6 on the outer roof cover, and its structure is the same as the arch of the outer roof cover. Water retaining edges 421 are provided at the skins 42 at both ends of the outer roof cover to guide rainwater into the water guide beam 5 and then drain it out of the vehicle from the position of the chord beam 6.

[0084] Among them, the water retaining edge 421 plays a role in drainage and splash prevention, preventing water flow from flowing into the sandwich space along the inside of the skin 42.

[0085] Please refer to Figure 8, the arched frame 41 includes top cover side beams 411, first curved beam structures 412, second curved beam structures 413, first cross beam structures 414 and second cross beam structures 415. There are two top cover side beams 411 which are detachably arranged on the corresponding chord beams 6. The top cover side beams 411 extend along the length direction of the vehicle body 1. The first curved beam structure 412 is an arched structure and is arranged parallel to the end wall 2. The first curved beam structure 412 is arranged at both ends of the top cover side beam 411 and is connected to the top cover side beam 411. The second curved beam structure 413 is an arched structure. There are multiple groups of the second curved beam structures 413 which are connected to the top cover side beam 411. All the multiple groups of the second curved beam structures 413 are parallel to the end wall 2 and are arranged between the first curved beam structures 412. There are two groups of the first cross beam structures 414. Both groups of the first cross beam structures 414 are parallel to the top cover side beam 411 and are arranged on the top of the second curved beam structures 413. The first cross beam structure 414 is connected to the second curved beam structure 413 and the first curved beam structure 412. There are multiple groups of the second cross beam structures 415. All the multiple groups of the second cross beam structures 415 are parallel to the top cover side beam 411. The multiple groups of the second cross beam structures 415 are evenly arranged between the corresponding first cross beam structures 414 and the top cover side beam 411. The second cross beam structure 415 is connected to the second curved beam structure 413 and the first curved beam structure 412.

[0086] It can be understood that the arched frame 41 is jointly composed of the top cover side beams 411, the first curved beam structures 412, the second curved beam structures 413, the first cross beam structures 414 and the second cross beam structures 415. After the welding of the arched frame 41 is completed, welding pads 43 are welded at the positions of the butt welds between the arched frame 41 and the skin 42. Finally, the skin 42 is covered and welded to complete the splicing of the outer top cover.

[0087] Among them, the structure of the water guide curved beam 5 is basically the same as that of the first curved beam structure 412. Rainwater flows in from the gap between the water retaining edges 421 between two adjacent outer top covers, and then flows along the water guide curved beam 5 into the chord beam 6 and finally is discharged outside the vehicle.

[0088] Furthermore, the first curved beam structure 412, the second curved beam structure 413 and the first cross beam structure 414 all include multiple connected U-shaped beams, and the two ends of the U-shaped beams of the first cross beam structure 414 are connected to the U-shaped beams of the corresponding first curved beam structure 412 and second curved beam structure 413. The second cross beam structure 415 includes multiple connected L-shaped beams, and the two ends of the L-shaped beams are connected to the U-shaped beams of the corresponding first curved beam structure 412 and second curved beam structure 413.

[0089] It should be noted that the U-shaped beams of the first curved beam structure 412, the second curved beam structure 413 and the first cross beam structure 414 are abutted against and welded to each other, the L-shaped beams of the second cross beam structure 415 and the U-shaped beams of the first curved beam structure 412 and the second curved beam structure 413 are abutted against and welded to each other, and the skeleton ribs are welded at positions away from the bending corners of the first curved beam structure 412 and the second curved beam structure 413 to improve the strength of the first curved beam structure 412 and the second curved beam structure 413.

[0090] Please refer to Figure 8 and Figure 9 A lifting pad 416 is provided at the junction top of the first curved beam structure 412 and the first cross beam structure 414 , and the lifting pad 416 is provided with a threaded hole for inserting and removing the eye bolt 7 .

[0091] It is understandable that lifting pads 416 are provided at both ends of each outer cover, and the lifting structure of the vehicle body 1 selects a detachable lifting lug, and a lifting pad 416 with the same width as the U-shaped beam is embedded in the cavity of the first curved beam structure 412. When the outer cover needs to be lifted, only the outer cover corresponding to the equipment to be maintained on the inner cover is lifted separately, so that the corresponding equipment can be maintained, and the maintainability is good.

[0092] When the outer top cover needs to be lifted, the eye bolt 7 in the lifting pad 416 is taken out and the lifting ear is tightened on the lifting pad 416. When the outer top cover is lifted to the corresponding position of the vehicle body 1, the lifting ear is removed and the eye bolt 7 is tightened in the lifting pad 416 again. By providing the eye bolt 7, it is possible to avoid the threaded hole of the lifting pad 416 being blocked, which may cause the outer top cover to be unable to be lifted.

[0093] Please refer to Figure 1 , Figure 2 , Figure 10 and Figure 11 The outer top cover is provided with an inspection port and a detachable inspection accessory 8 arranged at the inspection port. The inspection accessory 8 is arranged on the first crossbeam structure 414 through a flange 9. The inspection accessory 8 includes a detachable inspection cover plate 81 arranged at the inspection port, and also includes a sealing gasket 82 for sealing the inspection cover plate 81 and the flange 9. The flange 9 is provided with a step for installing the inspection cover plate 81 and the sealing gasket 82, and is also provided with a sinking platform with the same thickness as the skin 42.

[0094] It should be noted that the maintenance accessory 8 can be set according to the process capabilities and the needs of the equipment maintenance area. The outer top cover is provided with a detachable maintenance accessory 8 installed on the maintenance port to reduce unnecessary lifting operations. Equipment maintenance can be carried out through the maintenance port of the outer top cover or by lifting the corresponding outer top cover. The maintenance accessory 8 and the lifting pad 416 are designed to be flush with the U-beam, which can effectively prevent the outer contour of the skin 42 from being too protruding.

[0095] Among them, the flange 9 is welded between the U-shaped beams of the first crossbeam structure 414, and then the maintenance accessory 8 is installed on the flange 9. A counterbore with the same thickness as the skin 42 is dug on the outer side of the flange 9 to facilitate the welding of the skin 42. A groove is dug in the middle of the flange 9 to facilitate the installation and waterproofing of the sealing gasket 82. A step is provided on the inner side of the flange 9 to ensure that the sealing gasket 82 is flush with the outer surface of the skin 42 after being compressed. The maintenance cover plate 81 is fixed to the flange 9 by countersunk bolts 83.

[0096] Please refer to Figure 4 、 Figure 12 、 Figure 13 、 Figure 14 and Figure 15 , both the inner top cover and the top cover side beam 411 are connected to the chord beam 6 through the top cover mounting accessories 10. An installation rail 11 is provided on the chord beam 6 and is matched with the top cover mounting accessories 10. The top cover mounting accessories 10 include T-shaped bolts 101 provided on the installation rail 11. The T-shaped bolts 101 are threadedly connected to both the inner top cover and the top cover side beam 411. A gasket assembly 102 is provided on the T-shaped bolts 101. The top cover side beam 411 is provided with a plurality of installation grooves 12 for installing the top cover mounting accessories 10. A detachable sealing plate accessory 13 is provided at the notch of the installation groove 12. The sealing plate accessory 13 is connected to the sealing plate support 14 in the installation groove 12.

[0097] It can be understood that after the outer top cover is installed and positioned, all the top cover mounting accessories 10 are installed. When equipment maintenance is required, only the top cover mounting accessories 10 of the outer top cover in the corresponding area need to be disassembled and assembled. The top cover side beam 411 is installed on the chord beam 6 by T-shaped bolts 101 and the installation rail 11. Before installing the outer top cover, the T-shaped bolts 101 are pre-arranged on the installation rail 11. The installation rail 11 is provided with waist holes for installing the T-shaped bolts 101 to ensure that the outer top cover has adjustment margins in both the transverse and longitudinal directions, so as to reduce the difficulty of on-site installation. After the outer top cover is positioned, the nuts are tightened, and the sealing plate accessory 13 (the sealing plate accessory 13 is flush with the outer end face of the skin 42) is installed to ensure that the top cover mounting accessories 10 are not exposed and improve the aesthetics of the vehicle.

[0098] The installation of the outer top cover is mainly realized by the cooperation of two rows of top cover mounting accessories 10 on the top cover side beam 411 and the installation rail 11 on the chord beam 6. Before the outer top cover is hoisted and installed, the T-shaped bolts 101 and rubber gaskets need to be pre-installed. After the position of the outer top cover is confirmed to be correct, the metal round gaskets are installed and the nuts are tightened.

[0099] In an embodiment, if the vehicle body 1 has high airtightness requirements, the connection method between the inner top cover and the vehicle body 1 can be changed from bolt connection to welding, and the connection method between the outer top cover and the chord beam 6 remains unchanged. The connection method between the root of the inner top cover and the chord beam 6 is changed to full welding, as Figure 16 shown, to achieve the design purpose of airtightness.

[0100] Please refer toFigure 17 Inside the installation groove 12 near the water guide curved beam 5, there is also a top cover positioning accessory 15. The top cover positioning accessory 15 is connected to the sealing plate 16 in the installation groove 12. The top cover positioning accessory 15 includes a positioning bolt 151 and a locking nut 152, and the end of the positioning bolt 151 abuts against the water guide curved beam 5.

[0101] It should be noted that after the external top cover is hoisted and the positioning bolt 151 is installed, the end of the positioning bolt 151 abuts against the water guide curved beam 5 to solve the problem of difficult positioning of the external top cover, which is convenient for the subsequent disassembly and assembly of the external top cover. At the same time, a locking nut 152 is installed at the position of the positioning bolt 151 to prevent the positioning bolt 151 from slipping and causing inaccurate positioning in the future.

[0102] The positioning between the external top covers is realized by the top cover positioning accessory 15. After all the external top covers are hoisted to the appropriate position (flush with the surface of the end wall 2), the screwing depth of the positioning bolt 151 can be determined. At this time, screw in the positioning bolt 151 so that it completely abuts against the water guide curved beam 5 and tighten the locking nut 152. After all the external top covers are installed, install the sealing plate accessory 13 in the installation groove 12 of the top cover side beam 411.

[0103] In one embodiment, when the external top cover is relatively long and there is a large stress at the locking positions at both ends of the top cover side beam 411, a single T-shaped bolt 101 is difficult to meet the requirements. Therefore, two groups of top cover installation accessories 10 are used to enhance the fastening ability. For example, Figure 18 as shown, the installation rail 11 on the chord beam 6 is selected as required, a reinforcing plate 18 is added at the bottom of the metal round pad, a support rib 17 is added in the center of the installation groove 12, and a sealing plate support 14 is added to reinforce the sealing plate accessory 13.

[0104] Please refer to Figure 19 、 Figure 20 and Figure 21 , the end wall 2 includes a wall body 22 provided at both ends of the vehicle body 1 and columns 23 provided on both sides of the wall body 22. At the top of the columns 23, there is a wall body curved beam 24 for connecting the two columns 23. The wall body curved beam 24 is connected to the column 23 through a transition block 25. Water baffle plates 26 are provided on the inner sides of the wall body curved beam 24 and the transition block 25. One end of the skin 42 close to the end wall 2 is provided with a reinforcing curved beam 27 that is in clearance fit with the wall body curved beam 24 and the transition block 25.

[0105] It can be understood that the rainwater near the end wall 2 of the external top cover flows out through the gap between the reinforcing curved beam 27 and the wall body curved beam 24. By providing water baffle plates 26 on the inner sides of the wall body curved beam 24 and the transition block 25, rainwater is blocked from entering the sandwich space.

[0106] In summary, the detachable double-layer roof of the rail vehicle provided by the present utility model can lift the outer roof or the maintenance accessory 8 separately to facilitate the maintenance of the on-vehicle equipment 01. The sandwich space between the inner roof structure 3 and the outer roof structure 4 can be used to install the on-vehicle equipment 01 to improve the aesthetics and waterproof effect. The design of the double-layer roof effectively separates the equipment installation space from the passenger compartment space, effectively improving the comfort of the passenger compartment space.

[0107] In addition to the detachable double-layer roof of the rail vehicle disclosed in each of the above embodiments, the present utility model also provides a rail vehicle including the detachable double-layer roof of the rail vehicle. The rail vehicle includes a plurality of connected car bodies 1. Any one of the car bodies 1 is provided with the detachable double-layer roof of the rail vehicle described in any one of the above. For the structures of other parts of the rail vehicle, please refer to the prior art and will not be elaborated herein.

[0108] It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0109] Each embodiment in this specification is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other.

[0110] The above has introduced in detail a rail vehicle and its detachable double-layer roof provided by the present utility model. Specific examples are used herein to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model. It should be pointed out that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and modifications can be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A detachable double-layer roof for an orbital vehicle, characterized in that, Comprising: A car body (1) with end walls (2) provided at both ends thereof, and ventilation openings (21) provided on the end walls (2); An inner roof structure (3), which is a planar structure and is detachably provided on the top of the car body (1). The inner roof structure (3) extends along the length direction of the car body (1), and a detachable vehicle-mounted device (01) is installed on the inner roof structure (3), and the vehicle-mounted device (01) is connected to the ventilation opening (21) through a pipeline; An outer roof structure (4), which is an arched structure and is detachably provided on the top of the car body (1) and sleeved outside the inner roof structure (3), and the outer roof structure (4) extends along the length direction of the car body (1).

2. The detachable double-layer roof of the rail vehicle according to claim 1, characterized in that The inner roof structure (3) includes at least two inner roof covers, and the outer roof structure (4) includes at least two outer roof covers. An arched water guide bent beam (5) matching with the outer roof cover is provided between two adjacent outer roof covers. The water guide bent beam (5) is a U-shaped beam and is connected to a chord beam (6). The chord beam (6) is an L-shaped structure and is provided on both sides of the top of the car body (1). The outer roof cover includes an arched skeleton (41) detachably provided on the chord beam (6) and a skin (42) provided on the arched skeleton (41). The skin (42) is connected to the arched skeleton (41) through a backing plate (43). Water retaining edges (421) are provided at the ends of two adjacent skins (42), and the water retaining edges (421) are all provided inside the water guide bent beam (5).

3. The detachable double-layer roof of the rail vehicle according to claim 2, characterized in that, The arched skeleton (41) includes: Two roof edge beams (411) which are detachably provided on the corresponding chord beams (6) and extend along the length direction of the car body (1); A first bent beam structure (412), which is an arched structure and is provided at both ends of the roof edge beam (411) and connected to the roof edge beam (411). The first bent beam structure (412) is arranged parallel to the end wall (2); A second bent beam structure (413), which is an arched structure and is provided in multiple groups and connected to the roof edge beam (411). Multiple groups of the second bent beam structures (413) are all parallel to the end wall (2) and are provided between the first bent beam structures (412); Two groups of first cross beam structures (414), and the two groups of first cross beam structures (414) are both parallel to the roof edge beam (411) and are provided on the top of the second bent beam structure (413). The first cross beam structure (414) is connected to the second bent beam structure (413) and the first bent beam structure (412); The second cross beam structure (415) is provided with a plurality of groups, and the plurality of groups of the second cross beam structures (415) are parallel to the top cover side beam (411), and the plurality of groups of the second cross beam structures (415) are evenly arranged between the corresponding first cross beam structures (414) and the top cover side beam (411), and the second cross beam structures (415) are connected to the second curved beam structure (413) and the first curved beam structure (412).

4. The detachable double-layer roof of the rail vehicle according to claim 3, characterized in that The first curved beam structure (412), the second curved beam structure (413) and the first cross beam structure (414) all include a plurality of connected U-shaped beams, and the two ends of the U-shaped beam of the first cross beam structure (414) are connected to the corresponding U-shaped beams of the first curved beam structure (412) and the second curved beam structure (413); the second cross beam structure (415) includes a plurality of connected L-shaped beams, and the two ends of the L-shaped beams are connected to the corresponding U-shaped beams of the first curved beam structure (412) and the second curved beam structure (413).

5. The detachable double-layer roof of the rail vehicle according to claim 4, characterized in that, A lifting pad (416) is provided at the junction top of the first curved beam structure (412) and the first cross beam structure (414), and the lifting pad (416) is provided with a threaded hole for inserting and removing a lifting eye bolt (7).

6. The detachable double-layer roof of the rail vehicle according to claim 3, characterized in that, The outer top cover is provided with an inspection opening and a detachable inspection accessory (8) provided at the inspection opening. The inspection accessory (8) is provided on the first crossbeam structure (414) via a flange (9). The inspection accessory (8) includes a detachable inspection cover plate (81) provided at the inspection opening, and also includes a sealing gasket (82) for sealing the inspection cover plate (81) and the flange (9). The flange (9) is provided with a step for installing the inspection cover plate (81) and the sealing gasket (82), and is also provided with a sink having the same thickness as the skin (42).

7. The detachable double-layer roof of the rail vehicle according to claim 3, characterized in that, The inner top cover and the top cover side beam (411) are both connected to the chord beam (6) via a top cover mounting accessory (10); a mounting rail (11) matching the top cover mounting accessory (10) is provided on the chord beam (6); the top cover mounting accessory (10) comprises a T-bolt (101) provided on the mounting rail (11); the T-bolt (101) is threadedly connected to the inner top cover and the top cover side beam (411); a gasket assembly (102) is provided on the T-bolt (101); the top cover side beam (411) is provided with a plurality of mounting grooves (12) for mounting the top cover mounting accessory (10); a detachable sealing plate accessory (13) is provided at the notch of the mounting groove (12); the sealing plate accessory (13) is connected to a sealing plate support (14) in the mounting groove (12).

8. The detachable double-layer roof of the rail vehicle according to claim 7, characterized in that, A top cover positioning accessory (15) is also provided in the installation groove (12) near the water guide curved beam (5), the top cover positioning accessory (15) being connected to a sealing plate (16) in the installation groove (12), the top cover positioning accessory (15) comprising a positioning bolt (151) and a locking nut (152), the end of the positioning bolt (151) being in contact with the water guide curved beam (5).

9. The detachable double-layer roof of the rail vehicle according to claim 2, characterized in that, The end wall (2) includes a wall body (22) provided at both ends of the vehicle body (1) and columns (23) provided on both sides of the wall body (22). A wall bent beam (24) for connecting the two columns (23) is provided at the top of the column (23). The wall bent beam (24) is connected to the column (23) through a transition block (25). Water baffle plates (26) are provided on the inner sides of the wall bent beam (24) and the transition block (25). One end of the skin (42) close to the end wall (2) is provided with a strengthening bent beam (27) that is in clearance fit with the wall bent beam (24) and the transition block (25).

10. An orbital vehicle, characterized in that, Comprising a plurality of connected vehicle bodies (1), any one of the vehicle bodies (1) is provided with a detachable double-layer roof of the rail vehicle according to any one of claims 1-9.

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