CN117163085A - Rail vehicle and vehicle body structure - Google Patents

Abstract

The embodiment of the application provides a railway vehicle and a vehicle body structure, wherein the railway vehicle body structure comprises: the underframe is used for bearing a vehicle body steel structure; the two side walls are welded on two sides of the underframe by plasma, the two side walls are symmetrically arranged relative to the longitudinal center line of the underframe, and each side wall is formed by laser welding; the end wall is welded at one end of the underframe by plasma, and two sides of the end wall are respectively connected with one end of the side wall at the corresponding side in a spot welding way; the vehicle roof, one end close to the end wall is in plasma welding with the top of the end wall, and two sides of the vehicle roof are respectively in spot welding connection with the tops of the two side walls; the problem of spot welding pits on the outer surface of the stainless steel car body is solved, and the stainless steel car has the beneficial effects of strong bearing capacity, good welding effect, attractive appearance and light weight; is suitable for the technical field of railway vehicles.

Description

Rail vehicle and vehicle body structure

Technical Field

The application relates to the technical field of railway vehicles, in particular to a railway vehicle and a vehicle body structure.

Background

The stainless steel car body has the characteristics of light weight, corrosion resistance, high temperature resistance, high safety, long service life and the like, can realize a coating-free process, meets the environmental protection requirement, reduces the application and maintenance cost and the like. At present, light weight and high strength are basic principles and development trends to be followed by stainless steel car body design, and in addition, the structure, functions and performances of the car body should meet the requirements of natural environment conditions, line conditions, operation, transportation and overhaul, limitation, service life, safety, reliability and comfort in the technical specifications of the car.

In the prior art, the whole quality of the vehicle body structure is large, and the assembly welding of large parts of the stainless steel vehicle body generally adopts modes such as arc welding, resistance welding and the like, so that spot welding pit defects on the outer surface of the stainless steel vehicle body are easy to cause, the whole appearance effect of the vehicle is influenced, the welding effect of the vehicle body is poor, and the running energy consumption of a train is high, the speed is low and the strength is poor.

Disclosure of Invention

In order to solve one of the above technical drawbacks, an embodiment of the present application provides a rail vehicle and a vehicle body structure.

According to a first aspect of an embodiment of the present application, there is provided a railway vehicle body structure comprising: the underframe is used for bearing a vehicle body steel structure; the two side walls are welded on two sides of the underframe by plasma, the two side walls are symmetrically arranged relative to the longitudinal center line of the underframe, and each side wall is formed by laser welding; the end wall is welded at one end of the underframe by plasma, and two sides of the end wall are respectively connected with one end of the side wall at the corresponding side in a spot welding way; and the roof is in plasma welding with the top of the end wall at one end close to the end wall, and the two sides of the roof are respectively in spot welding connection with the tops of the two side walls.

Preferably, the underframe comprises a middle beam, two ends of the middle beam are respectively connected with two sleeper beams, two ends of each sleeper beam are respectively connected with two first side beams which are parallel, each first side beam is parallel to the middle beam, one side, away from the middle beam, of each sleeper beam is connected with a traction beam, one end, away from the sleeper beam, of each traction beam is connected with an end beam, two ends of each end beam are respectively connected with two first side beams, and the outer side, away from the end beam, of each end wall is connected with the cab underframe; each first side beam and the middle beam, each first side beam and each traction beam are provided with a plurality of first cross beams at intervals, and the thickness and the section form of each first cross beam are matched with those of hoisting equipment arranged on the underframe.

Preferably, the underframe further comprises a corrugated floor, two sides of the corrugated floor are respectively connected with each first side beam, and the bottoms of the corrugated floor are connected with the top of the first cross beam, the top of the middle beam, the top of the sleeper beam, the top of the traction beam and the top of the end beam.

Preferably, each side wall comprises a plurality of side wall components, the side wall components are arranged at intervals along the length direction of the vehicle body, and two adjacent side wall components are connected through a vehicle door component; the bottom of each side wall assembly and the bottom of each vehicle door assembly are connected with the underframe through plasma welding, and the top of each side wall assembly and the top of each vehicle door assembly are connected with the vehicle roof through spot welding.

Preferably, each side wall assembly comprises a side wall plate, the top end of the side wall plate is in spot welding connection with the roof, the bottom end of the side wall plate is in plasma welding with the underframe, a side wall framework is welded on the inner side of the side wall plate through laser, the bottom of the side wall framework is connected with the underframe through a first connecting plate, the top of the side wall framework is connected with the roof through a second connecting plate, at least one reinforcing beam is further arranged on one side, close to a carriage, of the junction of the side wall framework and the vehicle door assembly, the top of the reinforcing beam is connected with the bottom end face of the top of the vehicle door assembly, and the bottom of the reinforcing beam is connected with the top of the first side beam and the top end face of the bottom of the vehicle door assembly; the side wall framework comprises a plurality of side wall upright posts which are arranged at intervals, and a plurality of second cross beams which are parallel to the length direction of the vehicle body are welded between two adjacent side wall upright posts at intervals through laser; the upper part of the side wall assembly is also provided with a window for installing window glass.

Preferably, each side wall assembly further comprises a corrugated plate arranged between the side wall plate and the side wall skeleton; the corrugated plates are welded with the side wall plates through laser, and the corrugated plates are connected with the side wall upright posts, the second cross beams and the reinforcing beams through arc welding.

Preferably, each of the door assemblies includes two door uprights, a door upper cross member and a door sill; the two door uprights are all welded with between the door upper beam and the threshold, every door upright is all welded with the side wall assembly adjacent, the both ends of door upper beam are respectively in adjacent the upper portion laser welding of side wall assembly, the top of door upper beam with roof spot welding is connected, the both ends of threshold are respectively in adjacent the lower part laser welding of side wall assembly, the bottom of threshold with chassis plasma welding.

Preferably, a first reinforcing plate is arranged at each window corner of the window; and each door corner of the vehicle door assembly is provided with a second reinforcing plate.

Preferably, the roof is a low dome structure comprising a truss framework and a roof panel; the truss framework comprises two parallel second side beams extending along the length direction of the vehicle body, and a plurality of bent beams are welded between the two second side beams in a spot welding mode; the roof board comprises a corrugated roof board laid on the truss framework and two side roof boards positioned on two sides of the corrugated roof board, the corrugated roof board and the two side roof boards are connected with a plurality of bent beams in a spot welding mode, and one side, far away from the corrugated roof board, of each side roof board is set to be of a rain eave structure; the corrugated roof is provided with at least one mounting platform for mounting air conditioners and pantographs, and each mounting platform is provided with at least one air conditioner mounting seat and/or at least one pantograph mounting seat.

According to a second aspect of an embodiment of the present application, there is provided a railway vehicle including a vehicle body and a bogie provided on the vehicle body; the vehicle body is the railway vehicle body structure according to any one of the above.

The railway vehicle body structure provided by the embodiment of the application is a stainless steel vehicle body structure welded by plasma laser, two side walls in the vehicle body are welded by adopting a laser welding technology, and the connection among the chassis, the side walls, the end walls and the roof of the vehicle body adopts a plasma welding technology. The welding deformation is effectively reduced, the welding effect is improved by adopting a laser welding technology, the problem of spot welding pits on the outer surface of the stainless steel vehicle body is fully solved by adopting a plasma welding technology, and the overall appearance effect of the vehicle body structure is effectively improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:

fig. 1 is a front view of a body structure of a railway vehicle according to an embodiment of the present application;

FIG. 2 is a side view of a rail vehicle body structure provided in an embodiment of the present application;

FIG. 3 is a top view of a chassis of a rail vehicle body structure without a corrugated floor provided by an embodiment of the present application;

fig. 4 is a bottom view of a chassis of a railway vehicle body structure according to an embodiment of the present application;

fig. 5 is a schematic diagram of a side wall structure of a railway vehicle body structure according to an embodiment of the present application;

FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5;

fig. 7 is a schematic structural diagram of a side wall assembly of a railway vehicle body structure according to an embodiment of the present application;

fig. 8 is a schematic diagram of a connection structure between a side wall and a chassis of a railway vehicle body structure according to an embodiment of the present application; FIG. 9 is a schematic diagram of a connection structure between a reinforcing beam and a side wall assembly and between a reinforcing beam and a side wall assembly of a rail vehicle body structure and between a reinforcing beam and a side wall assembly of a vehicle door assembly of a rail vehicle body structure according to an embodiment of the present application;

fig. 10 is a schematic view of a door assembly of a railway vehicle body structure according to an embodiment of the present application;

FIG. 11 is a cross-sectional view taken along B-B in FIG. 10;

fig. 12 is a schematic view of a roof structure of a railway vehicle body structure according to an embodiment of the present application;

FIG. 13 is a cross-sectional view taken along line C-C of FIG. 12;

FIG. 14 is an enlarged schematic view of portion D of FIG. 13;

FIG. 15 is an enlarged partial schematic view of FIG. 2 at E;

in the figure: 10 is a chassis, 20 is a side wall, 30 is an end wall, 40 is a roof, 101 is a center sill, 102 is a sleeper beam, 103 is a first side sill, 104 is a traction beam, 105 is an end sill, 106 is a cab chassis, 107 is a first cross beam, 108 is a corrugated floor, 201 is a side wall assembly, 202 is a door assembly, 401 is a second side sill, 402 is a curved beam, 403 is a corrugated roof, 404 is a side roof, 405 is a mounting platform, 2011 is a side wall plate, 2012 is a side wall skeleton, 2013 is a corrugated plate, 2014 is a window, 2015 is a first reinforcing plate, 2016 is a first connecting plate, 2017 is a second connecting plate, 2021 is a door pillar, 2022 is a door upper cross beam, 2023 is a threshold, 2024 is a second reinforcing plate, 20121 is a side wall pillar, 20122 is a second cross beam.

Detailed Description

In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following detailed description of exemplary embodiments of the present application is provided in conjunction with the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present application and not exhaustive of all embodiments. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.

The longitudinal direction of the vehicle body is the longitudinal direction, and the vertical direction perpendicular to the length direction of the vehicle body is the vertical direction.

Fig. 1 is a front view of a rail vehicle body structure provided by an embodiment of the present application, and fig. 2 is a side view of a rail vehicle body structure provided by an embodiment of the present application, as shown in fig. 1 and fig. 2, and in view of the above problems, the embodiment of the present application provides a rail vehicle body structure, which includes: an underframe 10 for carrying a body steel structure; the two side walls 20 are welded on two sides of the underframe 10 in a plasma mode, the two side walls 20 are symmetrically arranged relative to the longitudinal center line of the underframe 10, and each side wall 20 is formed by laser welding; the end wall 30 is welded at one end of the underframe 10 by plasma, and two sides of the end wall 30 are respectively connected with one end of the side wall 20 at the corresponding side by spot welding; and a roof 40, one end of which close to the end wall 30 is plasma welded with the top of the end wall 30, and both sides of the roof 40 are respectively spot welded with the tops of the two side walls 20.

The railway vehicle body structure provided by the embodiment of the application is a stainless steel vehicle body structure welded by plasma laser, two side walls in the vehicle body are welded by adopting a laser welding technology, and the connection among the chassis, the side walls, the end walls and the roof of the vehicle body adopts a plasma welding technology. The welding deformation is effectively reduced, the welding effect is improved by adopting a laser welding technology, the problem of spot welding pits on the outer surface of the stainless steel vehicle body is fully solved by adopting a plasma welding technology, and the overall appearance effect of the vehicle body structure is effectively improved.

In the process of realizing the application, the inventor also finds that the problem to be solved is to provide a railway vehicle body structure with light weight and good water drainage effect.

Fig. 3 is a top view of an underframe of a railway vehicle body structure, on which a corrugated floor is not laid, as shown in fig. 3, further, the underframe 10 includes a middle beam 101, two ends of the middle beam 101 are respectively connected with two side beams 103, which are parallel, two ends of each side beam 102 are respectively connected with two first side beams 103, the lengths of the two first side beams are matched with the length of the vehicle body, each first side beam 103 is parallel to the middle beam 101, one side, away from the middle beam 101, of each side beam 102 is connected with a traction beam 104, one end, away from the side beams 102, of each traction beam 104 is connected with an end beam 105, two ends of each end beam 105 are respectively connected with two first side beams 103, and the outer side, away from the end beams 105 of the end wall 30, of each side beam is connected with an underframe 106; a plurality of first cross beams 107 are arranged between each first side beam 103 and the middle beam 101 and between each first side beam 103 and each traction beam 104 at intervals, and the thickness and the section form of each first cross beam 107 are matched with those of hoisting equipment arranged on the underframe 10, so that the underframe can hoist different equipment according to actual conditions.

Specifically, each first side beam 103 adopts a cold-formed part with the thickness of 4mm, which is beneficial to saving materials, shortening the period, effectively reducing the production cost and improving the production efficiency.

In the concrete implementation, binding points for installing the bogie are arranged at the proper positions of the two ends of the bottom of the underframe.

Fig. 4 is a bottom view of a chassis of a railway vehicle body structure according to an embodiment of the present application, and further, as shown in fig. 4, the chassis 10 further includes a corrugated floor 108, which is adapted to bear a longitudinal tensile or compressive force acting on the chassis, wherein two sides of the corrugated floor 108 are respectively connected to each of the first side rails 103, and the bottom of the corrugated floor 108 is connected to the top of the first cross member 107, the top of the center rail 101, the top of the sleeper beam 102, the top of the traction beam 104, and the top of the end rail 105.

Further, the length of the corrugated floor 108 is matched with the length of the first side beam 103, the width of the corrugated floor 108 is matched with the width of the end beam 105, and the corrugated grooves of the corrugated floor 108 extend along the length direction of the vehicle body, so that the strength of the underframe is improved.

Specifically, the corrugated floor panel 108 is a stainless steel corrugated floor panel having a thickness of 0.6mm and high strength, which is advantageous in light weight of the vehicle body. The chassis adopts the middle beam structure, so that the bearing capacity of the chassis is obviously improved, meanwhile, the middle beam, each first side beam and each first cross beam form a stable structure, the stability of the chassis is improved, each first cross beam is sleeved with each first side beam, and each first cross beam is connected with the middle beam through arc welding. In addition, as the main bearing part of the steel structure of the car body, the light-weight design can be realized through the selection of materials and the optimization of the structure under the precondition of ensuring the bearing safety of the underframe during the design.

Fig. 5 is a schematic diagram of a side wall structure of a rail vehicle body structure according to an embodiment of the present application, and fig. 6 is a cross-sectional view taken along a direction A-A in fig. 5, as shown in fig. 5 and 6, further, each side wall 20 includes a plurality of side wall components 201, the side wall components are in a modularized design, the plurality of side wall components 201 are arranged at intervals along a length direction of the vehicle body, and two adjacent side wall components 201 are connected through a door component 202, so that the plurality of side wall components are connected into a whole; the bottom of each side wall assembly 201, the bottom of each door assembly 202 is connected to the undercarriage 10 by plasma welding, and the top of each side wall assembly 201, the top of each door assembly 202 is connected to the roof 40 by spot welding.

The side wall component adopts a modularized design, and has the advantages of simple design, mature manufacture, low cost, reliable structure and the like.

Fig. 7 is a schematic structural diagram of a side wall assembly of a rail vehicle body structure provided by an embodiment of the present application, fig. 8 is a schematic structural diagram of a connection between a side wall and a chassis of a rail vehicle body structure provided by an embodiment of the present application, and fig. 9 is a schematic structural diagram of a connection between a reinforcing beam and a side wall assembly and a door assembly of a rail vehicle body structure provided by an embodiment of the present application; as shown in fig. 7-9, further, each side wall assembly 201 includes a side wall plate 2011, the top end of the side wall plate 2011 is in spot welding connection with the roof 40, the bottom end of the side wall plate 2011 is in plasma welding with the underframe 10, a side wall skeleton 2012 is welded on the inner side of the side wall plate 2011 by laser, the bottom of the side wall skeleton 2012 is connected with the underframe 10 through a first connecting plate 2016, the first connecting plate is used for enhancing the connection strength between the side wall skeleton and the underframe, as shown in fig. 15, the top of the side wall skeleton 2012 is connected with the roof 40 through a second connecting plate 2017, and the second connecting plate is used for enhancing the connection strength between the side wall skeleton and the roof.

The side wall skeleton 2012 is provided with at least one reinforcing beam 2018 with the junction of the door component 202 and the side near the carriage, the top of the reinforcing beam 2018 is connected with the bottom end surface of the top of the door component 202, and the bottom of the reinforcing beam 2018 is connected with the top of the first side beam 103 and the top end surface of the bottom of the door component 202.

The reinforcing beam, the side wall framework and the vehicle door component form a stable structure after being welded, so that the connection stability between the side wall framework and the vehicle door component is enhanced, the rigidity of the side wall framework and the vehicle door component is improved, the side wall has enough bending resistance, in addition, the reinforcing beam effectively improves the instability resistance of the load borne by the side wall, and the reinforcing beam can be bent when being concretely implemented, the number, the size and the shape of the reinforcing beam are not limited, and the reinforcing beam can be set according to practical conditions.

The upper portion of the side wall assembly 201 is further provided with a window 2014 for mounting a window glass, and in practical implementation, the position and the size of the window are not limited, and can be set according to practical situations.

The side wall skeleton 2012 comprises a plurality of side wall upright posts 20121 which are arranged at intervals, so that the transmission of vertical force of the vehicle body is facilitated, and a plurality of second cross beams 20122 which are parallel to the length direction of the vehicle body are welded between two adjacent side wall upright posts 20121 at intervals through laser, so that the transmission of vertical force of the vehicle body is facilitated.

Specifically, each sidewall 2011 adjacent to the first side rail 103 is plasma welded to the outer side of the first side rail 103, and each sidewall pillar 20121 adjacent to the first side rail 103 is connected to the first side rail 103 by a first connecting plate 2016.

According to the application, the outer part of the first side beam in the underframe and each side wall are welded by adopting plasma, and the inner part of the first side beam is connected with each side wall in a connecting plate mode, so that the attractive appearance of the vehicle body is ensured, and the production manufacturability is also ensured.

Further, each sidewall assembly 201 further includes corrugated plates 2013 disposed between the sidewall panels 2011 and the sidewall framework 2012; the corrugated plates 2013 are welded with the side wall plates 2011 by laser, the corrugated plates 2013 are connected with the side wall upright posts 20121, the second cross beams 20122 and the reinforcing beams 2018 by arc welding, so that a sleeve joint structure is formed, the sleeve joint structure is novel in form, and welding deformation is effectively reduced.

Specifically, the corrugated grooves of the corrugated plates 2013 extend along the length direction of the vehicle body, so that the strength of the side wall is effectively enhanced.

Further, each side wall plate 2011 comprises at least two side wall sub-plates, each side wall sub-plate is sequentially arranged from top to bottom along the length direction perpendicular to the vehicle body, and adjacent side wall sub-plates are welded in a laser welding mode, so that the flatness of the side wall is effectively improved.

Further, the cross section of each side wall pillar 2012, the cross section of each second cross member 2013, and the cross section of each reinforcing beam are all hat-shaped.

Specifically, the side wall upright posts 2012 and the second cross beams 2013 are made of SUS301L-DLT materials, so that each side wall upright post and each second cross beam have enough strength, and the reinforcing beams 2018 are made of SUS301L-MT materials with the thickness of 0.8mm, thereby being beneficial to the lightweight design of the vehicle body.

Fig. 10 is a schematic view of a door assembly of a railway vehicle body structure according to an embodiment of the present application, and fig. 11 is a cross-sectional view taken along B-B in fig. 10, as shown in fig. 10 and 11, and further, each door assembly 202 includes two door pillars 2021, a door upper beam 2022, and a door sill 2023; two door uprights 2021 are all welded between the door upper beam 2022 and the threshold 2023 by laser, each door upright 2021 is welded with the adjacent side wall assembly 201 by laser, two ends of the door upper beam 2022 are respectively welded with the upper parts of the adjacent side wall assemblies 201 by laser, the top end of the door upper beam 2022 is connected with the roof 40 by spot welding, two ends of the threshold 2023 are respectively welded with the lower parts of the adjacent side wall assemblies 201 by laser, and the bottom end of the threshold 2023 is welded with the underframe 10 by plasma.

Specifically, the door upper cross member 2022 and the rocker 2023 are both parallel to the vehicle body length direction.

Specifically, each door upright 2021 is a square steel tube, the door upper cross beam 2022 is a cold-formed steel, and the doorsill 2023 is a common bent piece.

In specific implementation, the shapes of the side wall assembly and the vehicle door assembly are not limited, and the side wall assembly and the vehicle door assembly can be arranged according to actual conditions.

Further, a first stiffening plate 2015 is arranged at each window corner of the window 2014 to avoid stress concentration at the window corner; a second stiffener 2024 is provided at each door corner of the door assembly 202 to avoid door corner stress concentrations.

Fig. 12 is a schematic view of a roof structure of a railway vehicle body structure according to an embodiment of the present application, fig. 13 is a cross-sectional view taken along a direction C-C in fig. 12, fig. 14 is a partially enlarged schematic view taken along a direction D in fig. 13, and further, as shown in fig. 12-14, a roof 40 is a low dome structure including a truss framework and a roof panel; the truss framework comprises two parallel second side beams 401 extending along the length direction of the vehicle body, and a plurality of bent beams 402 are welded between the two second side beams 401 in a spot welding mode; the roof includes the ripple roof 403 of laying on the truss skeleton and is located two side roof 404 of ripple roof 403 both sides, ripple roof 403 and two side roof 404 all with a plurality of curved beams 402 spot welding are connected, and one side that ripple roof 403 was kept away from to every side roof 404 sets up to the eaves structure, makes the rainwater pass through the drainage pipe row at eaves and automobile body both ends to ground, has effectively solved the drainage problem to can shelter from the exposed interface on side wall upper portion, improved the aesthetic property of automobile body.

At least one mounting platform 405 for mounting an air conditioner and a pantograph is provided on the corrugated roof 403, and at least one air conditioner mount and/or at least one pantograph mount is provided on each mounting platform 405. In specific implementation, the number of the air conditioner installation seats and the pantograph installation seats is not limited, and the number of the air conditioners and the pantograph installation seats can be adapted to the number of the air conditioners and the pantographs to be installed.

Specifically, the corrugation grooves of the corrugation roof panel 403 extend in the vehicle body length direction, effectively enhancing the strength of the roof.

Further, the bottom of each curved beam 402 is welded with a C-shaped groove extending along the length direction of the vehicle body, and the notch of the C-shaped groove is downward, which is beneficial to the lightweight design of the vehicle body. In the specific implementation, the specification, the number and the material of the C-shaped grooves are not limited, and the C-shaped grooves are specifically arranged according to actual conditions.

Specifically, the roof 40 is also provided with a water containing disc, air conditioner condensed water is converged into the water leakage bucket through the water containing disc, and is discharged to the ground through the water pipe, so that the water discharging problem is effectively solved.

The structural strength of the vehicle roof can meet the supported load requirement, and ensure that equipment maintenance personnel can work normally on the vehicle roof. The second side beam adopts stainless steel cold-formed steel, so that the material can be effectively saved, and the cost can be reduced; the bent beam is formed by stretch bending, and has the advantages of small resilience, high precision, difficult deformation of the section bar section and the like; the side top plate is made of stainless steel and is formed by cold bending, so that the side top plate has the advantages of rust resistance, corrosion resistance and long service life; the corrugated roof panel is made of high-strength stainless steel plates which are connected with the roof beam by spot welding and can bear 200cm ² Applying a vertical load of 1000N and satisfying a distance of 400cm of 500mm between two ² The requirement of respectively applying 1000N vertical load is met, and moreover, the through long corrugated roof is beneficial to drainage and weight reduction.

According to the application, the weight of the railway vehicle body is reduced by selecting materials and optimizing the structure, the energy consumption is obviously reduced, and the railway vehicle body has the advantages of good corrosion resistance, high safety, small deformation, low residual stress, no maintenance and the like. In addition, the stainless steel car body structure has the car body quality equivalent to that of an aluminum alloy car body, has low total life cycle cost, is the most economical car body, and accords with the development direction of green traffic.

When the railway vehicle body structure is specifically implemented, the railway vehicle body structure provides proper mounting interfaces for systems such as a coupler, in-vehicle equipment, a cab, a bogie, a brake, a skirt board and the like, and can bear dead weight, load, traction force, transverse force, braking force and other loads and acting forces when passing through curves. The longitudinal compression which can be borne by the coupler area reaches 1000kN, the bearing tensile static load reaches 800kN, and the requirements of 800KN and 640KN specified in EN 12663-PHII are exceeded. In addition, the strength of the car body meets the requirements of borne dynamic load, static load and impact load, and under various working conditions of car lifting, hoisting, rescue and shunting, the stress of the car body does not exceed the design allowable stress value, and the car body is not permanently deformed and is not easy to damage.

The application also provides a railway vehicle, which comprises a vehicle body and a bogie arranged on the vehicle body; the vehicle body is the rail vehicle body structure described in any one of the above.

The rail vehicle provided by the embodiment of the application has the same technical effect as the rail vehicle body structure.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may communicate with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

While preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims (10)

1. A rail vehicle body structure, comprising:

an underframe (10) for carrying a vehicle body steel structure;

the two side walls (20) are welded on two sides of the underframe (10) in a plasma mode, the two side walls (20) are symmetrically arranged relative to the longitudinal center line of the underframe (10), and each side wall (20) is formed by laser welding;

the end wall (30) is welded at one end of the underframe (10), and two sides of the end wall (30) are respectively connected with one end of the side wall (20) at the corresponding side in a spot welding manner;

and the roof (40) is close to one end of the end wall (30) and is in plasma welding with the top of the end wall (30), and two sides of the roof (40) are respectively in spot welding connection with the tops of the two side walls (20).

2. The railway vehicle body structure according to claim 1, wherein the underframe (10) comprises a center sill (101), two ends of the center sill (101) are respectively connected with two side sills (102), two ends of each side sill (102) are respectively connected with two first side sills (103) which are parallel, each first side sill (103) is parallel to the center sill (101), one side of each side sill (102) far away from the center sill (101) is connected with a traction beam (104), one end of each traction beam (104) far away from the side sills (102) is connected with an end sill (105), two ends of each end sill (105) are respectively connected with two first side sills (103), and the outer side of the end sill (105) far away from the end wall (30) is connected with a cab underframe (106);

every first boundary beam (103) with between well roof beam (101), every first boundary beam (103) with every all be provided with a plurality of first crossbeam (107) between traction beam (104) at intervals, every thickness and section form of first crossbeam (107) with set up in lifting device looks adaptation on chassis (10).

3. The railway vehicle body structure according to claim 2, wherein the underframe (10) further comprises a corrugated floor (108), both sides of the corrugated floor (108) are respectively connected with each of the first side beams (103), and the bottoms of the corrugated floor (108) are connected with the top of the first cross beam (107), the top of the center sill (101), the top of the sleeper beam (102), the top of the traction beam (104), and the top of the end beams (105).

4. The railway vehicle body structure according to claim 1, wherein each side wall (20) comprises a plurality of side wall components (201), the plurality of side wall components (201) are arranged at intervals along the length direction of the vehicle body, and two adjacent side wall components (201) are connected through a vehicle door component (202);

the bottom of each side wall assembly (201) and the bottom of each vehicle door assembly (202) are connected with the underframe (10) through plasma welding, and the top of each side wall assembly (201) and the top of each vehicle door assembly (202) are connected with the vehicle roof (40) through spot welding.

5. The rail vehicle body structure according to claim 4, characterized in that each side wall assembly (201) comprises a side wall panel (2011), the top end of the side wall panel (2011) is spot welded to the roof (40), the bottom end of the side wall panel (2011) is plasma welded to the underframe (10), the inner side of the side wall panel (2011) is laser welded with a side wall skeleton (2012), the bottom of the side wall skeleton (2012) is connected to the underframe (10) by a first connecting plate (2016), the top of the side wall skeleton (2012) is connected to the roof (40) by a second connecting plate (2017), and at least one reinforcing beam (2018) is further provided at the side of the side wall skeleton (2012) which is connected to the door assembly (202) and is close to the vehicle cabin, the top end face of the top of the door assembly (202), the bottom of the reinforcing beam (2018) is connected to the top end face of the top of the door assembly (103); the side wall framework (2012) comprises a plurality of side wall upright posts (20121) which are arranged at intervals, and a plurality of second cross beams (20122) parallel to the length direction of the vehicle body are welded between two adjacent side wall upright posts (20121) at intervals through laser;

the upper part of the side wall assembly (201) is also provided with a window (2014) for installing window glass.

6. The rail vehicle body structure of claim 5, characterized in that each side wall assembly (201) further comprises a corrugated plate (2013) arranged between the side wall plate (2011) and the side wall skeleton (2012);

the corrugated plates (2013) are welded with the side wall plates (2011) through laser, and the corrugated plates (2013) are connected with the side wall upright posts (20121), the second cross beam (20122) and the reinforcing beam (2018) through arc welding.

7. The rail vehicle body structure of claim 5, wherein each door assembly (202) comprises two door uprights (2021), a door upper cross member (2022) and a door sill (2023);

two door uprights (2021) are all welded with laser between door entablature (2022) and threshold (2023), every door upright (2021) all with adjacent side wall subassembly (201) laser welding, the both ends of door entablature (2022) respectively in adjacent upper portion laser welding of side wall subassembly (201), the top of door entablature (2022) with roof (40) spot welding is connected, the both ends of threshold (2023) respectively in adjacent lower part laser welding of side wall subassembly (201), the bottom of threshold (2023) with chassis (10) plasma welding.

8. The railway vehicle body structure according to claim 7, characterized in that a first stiffening plate (2015) is provided at each window corner of the window (2014);

a second stiffening plate (2024) is provided at each door corner of the door assembly (202).

9. The railway vehicle body structure according to claim 1, wherein the roof (40) is a low dome structure comprising a truss framework and a roof panel;

the truss framework comprises two parallel second side beams (401) which extend along the length direction of the vehicle body, and a plurality of bent beams (402) are welded between the two second side beams (401) in a spot welding mode;

the roof comprises a corrugated roof (403) laid on the truss framework and two side roof plates (404) positioned on two sides of the corrugated roof (403), the corrugated roof (403) and the two side roof plates (404) are connected with a plurality of bent beams (402) in a spot welding mode, and one side, far away from the corrugated roof plates (403), of each side roof plate (404) is provided with a rain eave structure;

the corrugated roof (403) is provided with at least one mounting platform (405) for mounting air conditioners and pantographs, and each mounting platform (405) is provided with at least one air conditioner mounting seat and/or at least one pantograph mounting seat.

10. A rail vehicle, comprising a vehicle body and a bogie arranged on the vehicle body; the vehicle body is a rail vehicle body structure according to any one of claims 1 to 9.