Rail vehicle underframe, rail vehicle body and rail vehicle

Abstract

The application provides a rail vehicle underframe, a rail vehicle body and a rail vehicle. The rail vehicle underframe, the rail vehicle body and the rail vehicle comprise a passenger compartment underframe module, a driver's cabin underframe module and an end underframe module. The end underframe module and the driver's cabin underframe module are respectively located at two ends of the passenger compartment underframe module along the longitudinal direction of the vehicle body and are welded and fixed. The passenger compartment underframe module, the driver's cabin underframe module and the end underframe module are respectively formed by hollow extruded aluminum alloy profiles. The driver's cabin underframe module comprises a driver's cabin floor module. The driver's cabin floor module comprises an upper floor and a lower floor. The upper floor is used for mounting a driver's platform and a driver's seat. The transverse two sides of the lower floor are respectively used for mounting a steering gear and an electrical five-in-one device. The transverse middle part of the lower floor is provided with a mounting space used for mounting a driving motor. Thus, the modular design of the driver's cabin underframe is realized, the modular degree of the vehicle body is improved, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rail vehicles, in particular to a rail vehicle underframe, a rail vehicle body and a rail vehicle. BACKGROUND

[0002] In recent years, with the improvement of the approval threshold for the construction of domestic metro, light rail and other rail transit systems, many cities in China have turned their attention to electronic guide rubber-tyred vehicles. Electronic guide rubber-tyred vehicles can be generally defined as ground transportation vehicles that run along fixed virtual tracks, use rubber-tyred vehicles as transportation carriers, and adopt rail transit operation organization modes. Such vehicles are favored due to their lower investment costs than metros and light rails and far superior ride quality than traditional buses. In November 2020, the T / CAMET 00001—2020 "Classification of Urban Rail Transit" formally classified electronic guide rubber-tyred systems as one of the urban rail transit systems.

[0003] The current urban rail transit, such as a bus passenger system, has a whole load type truss structure for the vehicle body, the main structure of the vehicle body is spliced by square steel tubes, and the whole vehicle body adopts a steel body structure, which makes it difficult to achieve lightweight; the whole vehicle body is spliced and welded by square steel tube structures, which has numerous parts and large assembly workload; and the degree of modularization is low and the compatibility is poor. SUMMARY

[0004] The rail vehicle underframe, the rail vehicle body and the rail vehicle provided in the embodiments of the present application solve the problem of the current vehicle body using a whole load type truss structure, which is difficult to achieve lightweight and has a low degree of modularization.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0006] A rail vehicle underframe, comprising a passenger compartment underframe module, a driver's cabin underframe module and an end underframe module, the end underframe module and the driver's cabin underframe module are respectively located at both ends of the passenger compartment underframe module along the longitudinal direction of the vehicle body and are welded and fixed, the passenger compartment underframe module, the driver's cabin underframe module and the end underframe module are respectively formed by hollow extruded aluminum alloy profiles; the driver's cabin underframe module comprises:

[0007] A driver's cabin floor module, the driver's cabin floor module comprises an upper floor and a lower floor, the upper floor is used for installing a driver's console and a driver's seat, the transverse sides of the lower floor are respectively used for installing a steering gear and an electrical five-in-one device, and the transverse middle part of the lower floor is provided with a mounting space for installing a drive motor.

[0008] Optionally, the driver's room bottom frame module further comprises a driver's room end axle bridge installation module, longitudinal two ends of the driver's room end axle bridge installation module are respectively welded and fixed with the driver's room floor module and the passenger room bottom frame module; the driver's room end axle bridge installation module comprises:

[0009] The first connecting plate is flush with the upper floor, and two first wheel covers are located on the two sides of the first connecting plate in the lateral direction of the vehicle body, and a part of any first wheel cover located below the first connecting plate is provided with a gap, and the gap and the bottom surface of the first connecting plate form an installation space for installing a power axle bridge.

[0010] Optionally, the driver's room floor module further comprises a rescue vehicle hook mounting seat located at the front end of the upper floor in the longitudinal direction of the vehicle body, and the rescue vehicle hook mounting seat is welded and fixed with the upper floor.

[0011] Optionally, the end bottom frame module comprises an end connecting module, and the end connecting module comprises:

[0012] An integrated hinge beam, an end connecting floor, and end connecting beams located on the two sides of the end connecting floor in the lateral direction, the end connecting floor and the end connecting beams are respectively welded and fixed with one longitudinal end of the integrated hinge beam, and the other longitudinal end of the integrated hinge beam is used for being connected with a hinge device.

[0013] Optionally, the end bottom frame module further comprises an end axle bridge installation module, longitudinal two ends of the end axle bridge installation module are respectively welded and fixed with the passenger room bottom frame module and the end connecting module; the end axle bridge installation module comprises:

[0014] A second connecting plate is flush with the end connecting floor, and two second wheel covers are located on the two sides of the end connecting floor in the lateral direction of the vehicle body, and the bottom end of the second wheel cover is flush with the second connecting plate;

[0015] The bottom of the second wheel cover and the second connecting plate forms an installation space for installing a power axle bridge.

[0016] Optionally, the end axle bridge installation module further comprises:

[0017] A transition beam extends in the lateral direction of the vehicle body, one longitudinal end of the transition beam is respectively fixed with the second connecting plate and the second wheel cover in the longitudinal direction of the vehicle body, and the other longitudinal end of the transition beam is connected with the passenger room bottom frame module;

[0018] The transition beam is obliquely arranged between the second connecting plate and the passenger room bottom frame module.

[0019] The application provides a rail vehicle body, comprising the rail vehicle underframe, the side walls welded on the two sides of the rail vehicle underframe in the transverse direction, the end walls welded on the end portions of the side walls, and the roof welded on the side walls and the end walls; the rail vehicle underframe, the side walls, the end walls and the roof are respectively formed by hollow extruded aluminum alloy profiles.

[0020] Optionally, the roof comprises:

[0021] two roof side beams, a roof top plate arranged between the two roof side beams, and a roof cross beam for connecting the end portions of the two roof side beams, the roof cross beam being used for mounting a cab outer cover;

[0022] the roof top plate is respectively provided with a cab air conditioning opening and a passenger compartment air conditioning opening.

[0023] Optionally, in the longitudinal direction of the vehicle body, a plurality of side beam openings are arranged on the roof side beam, for the wire harness of the roof to pass through the internal cavity of the roof side beam.

[0024] Optionally, the side wall has a wheel mounting notch, an upper edge of the wheel mounting notch is provided with an inwardly extending horizontal connecting plate, and an inner edge of the horizontal connecting plate is provided with a first plug-in interface.

[0025] the top outer edges of the first wheel cover and the second wheel cover of the rail vehicle underframe are provided with a second plug-in interface, and the horizontal connecting plate and the first wheel cover / second wheel cover are welded and fixed through the first plug-in interface and the second plug-in interface.

[0026] Optionally, the first plug-in interface comprises two longitudinally arranged and inwardly extending plugs along the horizontal connecting plate, the inwardly extending width of the upper plug is greater than that of the lower plug.

[0027] the second plug-in interface comprises two longitudinally arranged and outwardly extending plugs along the top plate of the first wheel cover / second wheel cover, and the outwardly extending width of the upper plug is smaller than that of the lower plug.

[0028] Optionally, a side edge of the wheel mounting notch is provided with an inwardly extending vertical connecting plate, an outer edge of the vertical connecting plate is provided with a conformal edge matched with the side edge of the wheel mounting notch, and an inner edge of the vertical connecting plate is provided with a straight edge matched with the side edge of the wheel cover.

[0029] Optionally, one side of the inner wall plate of the end wall is provided with a welding connecting plate, and the inner wall plate of the end wall and the inner top surface of the roof are welded and fixed through the welding connecting plate.

[0030] Optionally, the driver's room floor module of the rail vehicle chassis is located outside the rail vehicle body, and the driver's room end axle bridge mounting module of the rail vehicle chassis is located inside the rail vehicle body.

[0031] Optionally, the top and bottom of the driver's room stand of the side wall are respectively provided with wire passing holes, which are in communication with the internal cavity of the driver's room stand.

[0032] The application also provides a rail vehicle comprising the rail vehicle body according to any one of the above embodiments.

[0033] The rail vehicle chassis provided by the embodiments of the application comprises a passenger room chassis module, a driver's room chassis module and an end chassis module, the end chassis module and the driver's room chassis module are respectively located at two ends of the passenger room chassis module along the longitudinal direction of the vehicle body and are welded and fixed, and the passenger room chassis module, the driver's room chassis module and the end chassis module are respectively formed by hollow extruded aluminum alloy profiles.

[0034] The driver's room floor module comprises an upper floor and a lower floor, the upper floor is used for mounting a driver's desk and a driver's seat, the transverse two sides of the lower floor are respectively used for mounting a steering gear and an electrical five-in-one device, and the transverse middle part of the lower floor is provided with a mounting space for mounting a driving motor.

[0035] Compared with the prior art, the rail vehicle chassis provided by the embodiments of the application has the following technical effects:

[0036] The rail vehicle chassis comprises a passenger room chassis module, a driver's room chassis module and an end chassis module, which are respectively formed by hollow extruded aluminum alloy profiles, thereby improving the lightweight degree of the vehicle body, reducing the assembly workload, and having high modularization degree and good compatibility; meanwhile, the driver's room floor module is provided in a double-layer structure, the upper floor provides a mounting surface for a driver's desk and a driver's operation, the transverse two ends of the lower floor are respectively provided with a steering gear and an electrical five-in-one device, and the middle space provides a mounting space for a driving motor, thereby realizing the modularization design of the driver's room chassis, improving the modularization degree of the vehicle body and improving the production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0037] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and serve to explain the principles of the application, and do not limit the application in any way. In the drawings:

[0038] Figure 1 FIG. 1 is a structural schematic diagram of a rail vehicle provided by the embodiments of the application;

[0039] Figure 2A structural schematic view of a rail vehicle underframe provided for an embodiment of the present application;

[0040] Figure 3 A structural schematic view of a cab underframe module provided for an embodiment of the present application;

[0041] Figure 4 A structural schematic view of a cab underframe module provided for another embodiment of the present application;

[0042] Figure 5 A structural schematic view of an end underframe module provided for another embodiment of the present application;

[0043] Figure 6 A structural schematic view of a roof provided for an embodiment of the present application; Figure 2 A front view structural schematic view of the roof provided for an embodiment of the present application;

[0044] Figure 7 A structural schematic view of a roof provided for an embodiment of the present application;

[0045] Figure 8 A partial assembly schematic view of a side wall and a rail vehicle underframe provided for an embodiment of the present application;

[0046] Figure 9 A partial structural enlarged schematic view of the side wall provided for an embodiment of the present application; Figure 8 A partial structural enlarged schematic view of the side wall provided for an embodiment of the present application;

[0047] Figure 10 An assembly structural schematic view of a roof and an end wall provided for an embodiment of the present application;

[0048] Figure 11 A structural schematic view of a side wall provided for an embodiment of the present application.

[0049] The following are marked in the drawings:

[0050] A rail vehicle underframe 100, a side wall 200, an end wall 300, a roof 400,

[0051] A passenger compartment underframe module 11, a cab underframe module 12, an end underframe module 13;

[0052] A cab floor module 121, an upper floor 1211, a lower floor 1212;

[0053] A cab end axle bridge installation module 122, a first connecting plate 1221, a first wheel cover 1222, a clearance notch 1223;

[0054] A rescue car hook mounting seat 123;

[0055] An end connection module 131, an integrated hinged beam 1311, an end connection floor 1312, an end connection beam 1313;

[0056] End shaft bridge installation module 132, second connecting plate 1321, second wheel cover 1322, transition beam 1323;

[0057] Roof side beam 411, roof top plate 412, roof cross beam 413, cab air conditioning opening 414, passenger room air conditioning opening 415, side beam opening 416;

[0058] Horizontal connecting plate 211, first plug-in interface 212, second plug-in interface 213, vertical connecting plate 214, wire passing hole 215;

[0059] Contour edge 2141, straight edge 2142;

[0060] Welding connecting plate 311. DETAILED DESCRIPTION

[0061] The embodiment of the application discloses a rail vehicle underframe, a rail vehicle body and a rail vehicle, so as to solve the problems of the existing vehicle body using the overall load-bearing truss structure, the difficulty of lightening and the low degree of modularization.

[0062] In order to make the technical solutions and advantages in the embodiments of the present application clearer, the following further describes the exemplary embodiments of the present application in conjunction with the drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0063] Please refer to Figures 1-6 , Figure 1 A structural schematic diagram of a rail vehicle provided by the embodiment of the present application; Figure 2 A structural schematic diagram of a rail vehicle underframe provided by the embodiment of the present application; Figure 3 A structural schematic diagram of a cab underframe module provided by the embodiment of the present application; Figure 4 A structural schematic diagram of a cab underframe module provided by another embodiment of the present application; Figure 5 A structural schematic diagram of an end underframe module provided by another embodiment of the present application; Figure 6 A Figure 2 Front view structural schematic diagram.

[0064] In a specific embodiment, the track vehicle chassis 100 provided by the present application can be applied to urban rail transit, such as an electronic guide rubber-tyred train, a public bus or other track vehicles, and can be set according to needs. The present application takes the track vehicle as a rubber-tyred train for example to illustrate; the track vehicle chassis 100 includes a passenger compartment chassis module 11, a driver's cabin chassis module 12 and an end chassis module 13; wherein the end chassis module 13 and the driver's cabin chassis module 12 are respectively located at both ends of the passenger compartment chassis module 11 along the longitudinal direction of the vehicle body and are welded and fixed, and the passenger compartment chassis module 11, the driver's cabin chassis module 12 and the end chassis module 13 are respectively formed by a hollow extruded aluminum alloy profile, so that the track vehicle chassis 100 realizes overall load bearing, improves the degree of modularization and improves production efficiency.

[0065] In this embodiment, the driver's cabin chassis module 12 includes a driver's cabin floor module 121, a driver's cabin end axle bridge installation module 122 and a rescue car hook installation seat 123; the driver's cabin floor module 121 includes an upper floor 1211 and a lower floor 1212, the upper floor 1211 is used for installing a driver's platform and a driver's seat, the transverse two sides of the lower floor 1212 are respectively used for installing a steering gear and an electrical five-in-one device, and the transverse middle part of the lower floor 1212 is provided with an installation space for installing a drive motor; a space is provided between the upper floor 1211 and the lower floor 1212, the upper floor 1211 and the lower floor 1212 are respectively fixed with an end plate, the upper floor 1211 is a plane, providing a mounting surface for the driver's platform and the driver's seat, and the transverse middle part of the lower floor 1212 is provided with a notch, which forms an installation space for installing a drive motor with the upper floor 1211, and the double-layer structure design of the driver's cabin floor module 121 improves the structural rigidity and increases the overall rigidity of the end part of the vehicle body, so that the driver's cabin outer cover does not need to participate in vehicle load bearing too much, the weight of the driver's cabin outer cover can be reduced to a certain extent, and the overall weight of the vehicle is reduced.

[0066] The longitudinal two ends of the driver's cab end axle bridge mounting module 122 are respectively welded and fixed with the driver's cab floor module 121 and the passenger compartment chassis module 11; the driver's cab end axle bridge mounting module 122 comprises a first connecting plate 1221 and a first wheel cover 1222, the first connecting plate 1221 is flush with the upper floor 1211; two first wheel covers 1222 are located on the two sides of the first connecting plate 1221 along the lateral direction of the vehicle body, and the part of any first wheel cover 1222 located below the first connecting plate 1221 is provided with a gap 1223, and the gap 1223 and the bottom surface of the first connecting plate 1221 form a mounting space for mounting the power axle bridge. The first wheel cover 1222 is surrounded by a rectangular top plate and three rectangular side plates surrounding three edges of the rectangular top plate, the vertical two ends of the rectangular side plate are respectively provided on the top surface and the bottom surface of the first connecting plate 1221, in order to provide a mounting space for the power axle bridge, the part of the first wheel cover 1222 located below the first connecting plate 1221 is provided with a gap 1223, and the gap 1223 and the bottom surface of the first connecting plate 1221 form a mounting space for mounting the power axle bridge.

[0067] The rescue car hook mounting seat 123 is located at the front end of the upper floor 1211 along the longitudinal direction of the vehicle body, and the rescue car hook mounting seat 123 is welded and fixed with the upper floor 1211; when the train needs to be rescued, the rescue car hook mounting seat 123 is connected with the rescue vehicle.

[0068] The driver's cab chassis module 12 described above is welded by a plurality of modules, which improves the production efficiency, realizes lightweight setting under the premise of ensuring the rigidity of the driver's cab end, and provides a basis for realizing the modularization of the whole vehicle.

[0069] The passenger compartment chassis module 11 is welded by a plurality of longitudinal profiles, specifically five longitudinal profiles, and the specific structure is not described here.

[0070] In this embodiment, the end chassis module 13 provides a mounting interface for the steering axle bridge and connects the articulation device; the end chassis module 13 comprises an end connecting module 131, the end connecting module 131 comprises an integrated articulation beam 1311, an end connecting floor 1312, and end connecting beams 1313 located on both sides of the end connecting floor 1312 along the lateral direction, the end connecting floor 1312 and the end connecting beams 1313 are respectively welded and fixed with the longitudinal one end of the integrated articulation beam 1311, and the longitudinal other end of the integrated articulation beam 1311 is used for connecting with the articulation device.

[0071] The integrated articulated beam 1311 is a weld-free structure, avoiding the reduction in aluminum alloy strength caused by welding. The end connecting beam 1313 and the end connecting plate 1312 adopt a thickened structure to ensure effective transmission of longitudinal forces to the articulation device. According to EN 12663-1:2010 "Railway applications - Strength requirements for track vehicle structures", the maximum tensile / compressive forces here are 200KN / 150KN respectively. Furthermore, the end connecting beam 1313 is positioned opposite the longitudinal beam of the articulation device to further ensure effective transmission of longitudinal forces.

[0072] The end frame module 13 also includes an end axle bridge mounting module 132, providing installation space for the power axle bridge. The longitudinal ends of the end axle bridge mounting module 132 are welded and fixed to the passenger compartment frame module 11 and the end connection module 131, respectively. The end axle bridge mounting module 132 includes a second connecting plate 1321 and a second wheel cover 1322. The second connecting plate 1321 is flush with the end connecting floor 1312, and the two second wheel covers 1322 are located laterally along the vehicle body on both sides of the end connecting floor 1312, with the bottom ends of the second wheel covers 1322 flush with the second connecting plate 1321. Thus, the bottoms of the second wheel covers 1322 and the second connecting plate 1321 form an installation space for mounting the power axle bridge. The second wheel cover 1322 is formed by a rectangular top plate and three rectangular side plates surrounding the three sides of the rectangular top plate. In other embodiments, the specific structure of the second wheel cover 1322 can be configured as needed, which will not be described in detail here.

[0073] Meanwhile, in order to connect the end axle axle mounting module 132 to the passenger compartment underframe module 11, the end axle axle mounting module 132 also includes a transition beam 1323, which extends laterally along the vehicle body. One end of the transition beam 1323 along the longitudinal direction of the vehicle body is fixed to the second connecting plate 1321 and the second wheel cover 1322, respectively, and the other end of the transition beam 1323 along the longitudinal direction of the vehicle body is connected to the passenger compartment underframe module 11. The transition beam 1323 is inclined between the second connecting plate 1321 and the passenger compartment underframe module 11, specifically inclined downward between the connecting plate and the driver's cab floor module 121, so as to avoid the structure of the steering axle axle.

[0074] It is understood that, taking the lead car of a rail vehicle as an example, it includes a driver's cab underframe module 12 set at one end and an end underframe module 13 set at the second end; for the intermediate cars, it includes end underframe modules 13 set at one end and two ends respectively. Both types of cars are within the protection scope of this application. In one embodiment, the rail vehicle includes a lead car and several intermediate cars.

[0075] like Figures 7-11 As shown, Figure 7 This is a structural schematic diagram of the roof 400 provided in an embodiment of this application; Figure 8A partial assembly schematic view of the side wall 200 and the rail vehicle underframe 100 is provided for the embodiment of the present application; Figure 9 A partial structure enlarged schematic view is provided for the embodiment of the present application. Figure 8 A partial structure enlarged schematic view is provided for the embodiment of the present application. Figure 10 An assembly structure schematic view of the roof 400 and the end wall 300 is provided for the embodiment of the present application. Figure 11 An assembly structure schematic view of the roof 400 and the end wall 300 is provided for the embodiment of the present application.

[0076] The present application also provides a rail vehicle body, which comprises the rail vehicle underframe 100, the side wall 200 welded on both sides of the rail vehicle underframe 100 in the transverse direction, the end wall 300 welded on the end of the side wall 200, and the roof 400 welded above the side wall 200 and the end wall 300, according to any one of the above embodiments; the rail vehicle underframe 100, the side wall 200, the end wall 300 and the roof 400 are respectively formed by hollow extruded aluminum alloy profiles, so as to solve the problem of galvanic corrosion of the steel-aluminum mixed vehicle body, while meeting the design requirements of the lightweight vehicle body.

[0077] Specifically, the side wall 200 is welded by three side wall 200 processing modules, a cab upright, a window upright, an upper wall plate, a door upright and an end upright, etc., to form a side wall 200 group welding module after welding; a wire passing hole 215 is arranged on the upper part and the lower part of the cab upright, respectively, and the wire passing hole 215 is in communication with the internal cavity of the cab upright, so as to facilitate the wire harness of the roof 400 to pass through, and to supply power for the equipment of the lower floor 1212 of the cab.

[0078] Further, the side wall 200 has a wheel mounting notch, and an upper edge of the wheel mounting notch is provided with a horizontally extending connecting plate 211 extending inward, i.e., the horizontally extending connecting plate 211 extends to the lateral center side of the vehicle body along the upper edge, and an inner edge of the horizontally extending connecting plate 211 is provided with a first plug-in interface 212; a top outer edge of the first wheel cover 1222 and the second wheel cover 1322 of the rail vehicle underframe 100 is provided with a second plug-in interface 213, and the horizontally extending connecting plate 211 and the first wheel cover 1222 and the horizontally extending connecting plate 211 and the second wheel cover 1322 are respectively welded and fixed through the first plug-in interface 212 and the second plug-in interface 213. Thus, the welding between the side wall 200 and the rail vehicle underframe 100 is realized.

[0079] Still further, the first plug-in interface 212 comprises two plugs arranged in the longitudinal direction and extending inward along the horizontally extending connecting plate 211, and the inward extension width of the upper plug is greater than that of the lower plug; the first plug-in interface 212 is a non-isosceles plug-in interface, and correspondingly, the second plug-in interface 213 is also a non-isosceles plug-in interface, and the second plug-in interface 213 comprises two plugs arranged in the longitudinal direction and extending outward along the top plate of the first wheel cover 1222 / second wheel cover 1322, and the outward extension width of the upper plug is less than that of the lower plug.

[0080] It can be understood that when the side wall 200 is installed on the rail vehicle chassis 100, the side wall 200 is vertically arranged on the rail vehicle chassis 100, which includes a vertical plug-in interface between the side wall 200 and the rail vehicle chassis 100, and a transverse plug-in interface between the side wall 200 and the wheel cover. Based on the drop installation of the side wall 200 when it is installed on the rail vehicle chassis 100, unequal side plug-in interfaces are provided at the connection of the two, so that the first plug-in interface 212 and the second plug-in interface 213 are aligned for welding after the drop installation of the side wall 200, so that the vertical plug-in and the transverse plug-in during installation are met without the need for transverse movement as required by the conventional plug-in interface, and the drop assembly of the side wall 200 is realized.

[0081] At the same time, based on the non-planar interface of the window lower inner wall of the side wall 200, the gap between the wheel cover elevation and the side wall 200 is not equal in width, and a vertical connecting plate 214 extending inward is provided at the side edge of the wheel installation gap. The outer edge of the vertical connecting plate 214 is provided with a contoured edge 2141 matched with the side edge of the wheel installation gap, and the inner edge of the vertical connecting plate 214 is provided with a straight edge 2142 matched with the side edge of the wheel cover; so as to ensure that the vertical connecting plate 214 is planar after being welded with the wheel cover.

[0082] When the roof 400 is assembled, a vertical drop installation method is also used, and the interface between the roof 400 and the side wall 200 is connected through a plug-in interface; since the plate structure of the roof 400 is arc-shaped, based on processing errors and installation errors, the end wall 300 is prone to gaps when welded with the roof 400, affecting the connection strength; a welding connecting plate 311 is provided on one side of the inner wall plate of the end wall 300, and the inner wall plate of the end wall 300 and the inner top surface of the roof 400 are welded and fixed through the welding connecting plate 311; specifically, the welding connecting plate 311 is welded by using a fillet weld scheme, and the outer wall plate of the end wall 300 and the outer surface of the roof 400 are connected by using a full penetration weld with a welding backing plate.

[0083] At the same time, the driver's room floor module 121 of the rail vehicle chassis 100 is located on the outside of the rail vehicle body, and the driver's room end axle bridge installation module 122 of the rail vehicle chassis 100 is located inside the rail vehicle body; the interface between the driver's room cover and the vehicle body is located before the power axle bridge, thereby greatly increasing the overall stiffness of the end of the vehicle body; so that the driver's room cover does not need to participate too much in vehicle loading, to a certain extent, the weight of the driver's room cover is reduced, and the overall weight of the vehicle is further reduced.

[0084] In the head car, the end wall 300 is located at the end away from the driver's room and is welded to the end of the side wall 200 and the roof 400; on the intermediate car, the end wall 300 is located at the longitudinal ends of the vehicle body, respectively, and is welded to the side wall 200 and the roof 400.

[0085] In an alternative embodiment, the roof 400 comprises two roof side beams 411, a roof top plate 412 arranged between the two roof side beams 411, and a roof cross beam 413 for connecting the ends of the two roof side beams 411, the roof cross beam 413 being used for mounting the cab outer cover; the roof top plate 412 is respectively provided with a cab air conditioning opening 414 and a passenger compartment air conditioning opening 415.

[0086] It can be understood that the roof cross beam 413 provides a mounting plane for the cab outer cover, while ensuring the overall strength of the roof 400, the cab air conditioning opening 414 is arranged on the roof top plate 412 close to the cab end, and the passenger compartment air conditioning openings 415 are arranged in the middle of the roof top plate 412, preferably three, and the three passenger compartment air conditioning openings 415 are arranged in sequence in the transverse direction. Further, in the longitudinal direction of the vehicle body, a plurality of side beam openings 416 are arranged on the roof side beam 411 for the wire harness of the roof 400 to pass through the internal cavity of the roof side beam 411, the side beam opening 416 can be arranged as a square hole with a size of 100*300mm, which facilitates the wire harness of the roof 400 to pass through, reduces the weight of the roof 400, and realizes the lightweight of the vehicle body.

[0087] The above rail vehicle body has high modularity, the interfaces of the modules are convenient for on-site operation in the workshop, which is beneficial to improve the production efficiency; the integral hinge beam 1311 without welding meets the EN 12663 standard, and improves the safety performance of the vehicle body; at the same time, the lightweight vehicle body structure of the full aluminum alloy has good corrosion resistance; at the same time, the cab outer cover does not participate in the load bearing, which can reduce the weight of the outer cover and further realize the lightweight design of the rail vehicle.

[0088] Based on the rail vehicle body provided in the above embodiments, the application further provides a rail vehicle comprising any one of the rail vehicle bodies in the above embodiments, since the rail vehicle adopts the rail vehicle body in the above embodiments, the beneficial effects of the rail vehicle are referred to the above embodiments.

[0089] Although the preferred embodiments of the application have been described, those skilled in the art can make additional changes and modifications to the embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be interpreted as including all changes and modifications of the preferred embodiments and falling within the scope of the application.

[0090] Obviously, those skilled in the art can make various modifications and variations to the application without departing from the spirit and scope of the application. Thus, if these modifications and variations of the application fall within the scope of the claims of the application and their equivalent technologies, the application also intends to include these modifications and variations.

Claims

1. A rail vehicle underframe, characterized in that, The end chassis module comprises an end connecting module, the end connecting module comprises: An integrated hinge beam, an end connecting floor and end connecting beams located on both sides of the end connecting floor in the transverse direction, the end connecting floor and the end connecting beams are respectively welded and fixed with one longitudinal end of the integrated hinge beam, and the other longitudinal end of the integrated hinge beam is used for being connected with a hinge device; The end chassis module further comprises an end axle bridge installation module, the longitudinal ends of the end axle bridge installation module are respectively welded and fixed with the passenger compartment chassis module and the end connecting module; the end axle bridge installation module comprises: A second connecting plate and a second wheel cover, the second connecting plate is flush with the end connecting floor; two second wheel covers are located on both sides of the end connecting floor in the transverse direction of the vehicle body, and the bottom end of the second wheel cover is flush with the second connecting plate; The bottom of the second wheel cover and the second connecting plate forms an installation space for installing a power axle bridge. The driver's cabin chassis module further comprises a driver's cabin end axle bridge installation module, the longitudinal ends of the driver's cabin end axle bridge installation module are respectively welded and fixed with the driver's cabin floor module and the passenger compartment chassis module; the driver's cabin end axle bridge installation module comprises: A first connecting plate and a first wheel cover, the first connecting plate is flush with the upper floor; two first wheel covers are located on both sides of the first connecting plate in the transverse direction of the vehicle body, and the part of any first wheel cover located below the first connecting plate is provided with a gap notch, and the gap notch and the bottom surface below the first connecting plate form an installation space for installing a power axle bridge.

2. The railway vehicle underframe according to claim 1, characterized in that The driver's cabin floor module further comprises a rescue vehicle hook mounting seat located at the front end of the upper floor in the longitudinal direction of the vehicle body, and the rescue vehicle hook mounting seat is welded and fixed with the upper floor. The end axle bridge installation module further comprises:

3. The rail vehicle underframe according to claim 1, characterized in that A transition beam extending in the transverse direction of the vehicle body, one longitudinal end of the transition beam is respectively fixed with the second connecting plate and the second wheel cover in the longitudinal direction of the vehicle body, and the other longitudinal end of the transition beam is connected with the passenger compartment chassis module; 4. The rail vehicle chassis of claim 1, wherein, The transition beam is obliquely arranged between the second connecting plate and the passenger compartment chassis module. ​ ​ 5. A railway vehicle body, characterized by The rail vehicle underframe, the side walls welded on both sides of the rail vehicle underframe in the transverse direction, the end walls welded on the end portions of the side walls, and the roof welded on the side walls and the end walls; the rail vehicle underframe, the side walls, the end walls and the roof are respectively formed by hollow extruded aluminum alloy profiles.

6. A railway vehicle body according to claim 5, characterised in that The roof comprises: Two roof side beams, a roof top plate arranged between the two roof side beams, and a roof cross beam for connecting the end portions of the two roof side beams, the roof cross beam being used for mounting a cab outer cover; The roof top plate is respectively provided with a cab air conditioning opening and a passenger compartment air conditioning opening.

7. A railway vehicle body according to claim 5, characterised in that In the longitudinal direction of the vehicle body, a plurality of side beam openings are arranged on the roof side beam, which are used for the roof wire harness to pass through the internal cavity of the roof side beam.

8. The railway vehicle body of claim 5, wherein, The side wall has a wheel mounting notch, the upper edge of the wheel mounting notch is provided with an inwardly extending horizontal connecting plate, and the inner edge of the horizontal connecting plate is provided with a first plug-in interface; The top outer edge of the first wheel cover and the second wheel cover of the rail vehicle underframe is provided with a second plug-in interface, and the horizontal connecting plate and the first wheel cover / second wheel cover are welded and fixed through the first plug-in interface and the second plug-in interface.

9. Railway vehicle body according to claim 8, characterized in that The first plug-in interface comprises two longitudinally arranged and inwardly extending plugs along the horizontal connecting plate, the inwardly extending width of the upper plug is greater than that of the lower plug; The second plug-in interface comprises two longitudinally arranged and outwardly extending plugs along the top plate of the first wheel cover / second wheel cover, the outwardly extending width of the upper plug is less than that of the lower plug.

10. Railway vehicle body according to claim 9, characterized in that The side edge of the wheel mounting notch is provided with an inwardly extending vertical connecting plate, the outer edge of the vertical connecting plate is provided with a conformal edge matched with the side edge of the wheel mounting notch, and the inner edge of the vertical connecting plate is provided with a straight edge matched with the side edge of the wheel cover.

11. Railway vehicle body according to claim 10, characterized in that The inner wall plate of the end wall is provided with a welding connecting plate on one side, and the inner wall plate of the end wall and the inner top surface of the roof are welded and fixed through the welding connecting plate.

12. The railway vehicle body of claim 5, wherein, The cab floor module of the rail vehicle underframe is located on the outer side of the rail vehicle body, and the cab end axle bridge installation module of the rail vehicle underframe is located in the interior of the rail vehicle body.

13. The railway vehicle body of claim 5, wherein, The top portion and the bottom portion of the cab upright column of the side wall are respectively provided with wire passing holes, which are in communication with the internal cavity of the cab upright column.

14. A rail vehicle, characterized by The rail vehicle body comprises the rail vehicle body according to any one of claims 5-13.

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