CN111806479B

CN111806479B - Rail vehicle side wall and rail vehicle

Info

Publication number: CN111806479B
Application number: CN202010739372.1A
Authority: CN
Inventors: 杨福鹏; 刘龙玺; 杨小荣; 尚克明; 林鹏
Original assignee: CRRC Qingdao Sifang Co Ltd
Current assignee: CRRC Qingdao Sifang Co Ltd
Priority date: 2020-07-28
Filing date: 2020-07-28
Publication date: 2021-09-10
Anticipated expiration: 2040-07-28
Also published as: CN111806479A

Abstract

The invention relates to the field of rail vehicles, and provides a rail vehicle side wall and a rail vehicle. The rail vehicle side wall is including many stands that set up side by side, many the stand is including the door stand that is located both sides and being located many middle part stands between the door stand, the lower extreme of door stand is suitable for the butt on rail vehicle's chassis boundary beam, the lower extreme of middle part stand with the upper surface clearance of chassis boundary beam sets up relatively, and connects through the connecting piece the middle part stand with the chassis boundary beam. The middle upright post is not contacted with the edge beam of the bottom frame and is connected with the edge beam of the bottom frame through the connecting piece, so that the technical problems that the gaps between the side wall upright post (the middle upright post) and the edge beam of the bottom frame are inconsistent, the gaps between partial positions are large and welding cannot be performed are solved.

Description

Rail vehicle side wall and rail vehicle

Technical Field

The invention relates to the technical field of rail vehicles, in particular to a rail vehicle side wall and a rail vehicle.

Background

At present, in the manufacturing process of a stainless steel vehicle body, when a side wall stand column and an underframe edge beam are welded, the gaps between the side wall stand column and the underframe edge beam are inconsistent and the gaps between partial positions are large, so that the side wall stand column and the underframe edge beam cannot be welded due to the fact that the deflection cannot be completely matched.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a rail vehicle side wall, which solves the technical problems that when a side wall upright post and an underframe edge beam are welded, the deflection cannot be completely matched, the gap between the side wall upright post and the underframe edge beam is inconsistent, the gap between partial positions is large, and welding cannot be performed.

The invention further provides the railway vehicle.

According to the embodiment of the first aspect of the invention, the rail vehicle side wall comprises a plurality of stand columns arranged side by side, the stand columns comprise door stand columns positioned on two sides and a plurality of middle stand columns positioned between the door stand columns, the lower ends of the door stand columns are suitable for abutting against an underframe boundary beam of a rail vehicle, the lower ends of the middle stand columns are opposite to the upper surface gap of the underframe boundary beam, and the middle stand columns and the underframe boundary beam are connected through connecting pieces.

According to one embodiment of the invention, the connecting piece comprises a first vertical rib and a second vertical rib bent to the same side along two vertical sides of the first vertical rib; the first vertical rib and the pair of second vertical ribs form a groove in a surrounding mode, the groove is used for being clamped on the middle upright column, at least one of the first vertical rib and the pair of second vertical ribs is connected with the middle upright column in a welding mode, and the bottom end of the first vertical rib and the pair of second vertical ribs are abutted to and welded on the side beam of the underframe.

According to an embodiment of the present invention, openings are formed in surfaces of the first vertical rib and the pair of second vertical ribs, and the first vertical rib and the pair of second vertical ribs are welded to the middle pillar through the respective openings.

According to one embodiment of the invention, the vertical outer edges of the pair of second vertical ribs are respectively provided with a notch, the surface of each notch is a concave cambered surface, and the joint of each notch and the corresponding second vertical rib is in cambered surface transition connection.

According to one embodiment of the invention, the side wall lower side beam comprises a lower cross beam and a lower side beam body which is integrally formed with the lower cross beam, wherein the lower side beam body comprises a vertical plate which extends downwards along the lower side wall of the lower cross beam, an inclined plate which is formed by bending the vertical plate to the side where the lower cross beam is located in an inclined manner, and a horizontal plate which is formed by horizontally extending the end part of the inclined plate; the horizontal plate is used for being attached to the side beam of the underframe, and the inclination angle of the inclined plate is adjusted to enable the side beam body to have corresponding deflection.

According to one embodiment of the invention, the lower cross beam is a hat-shaped beam, the lower flange of the hat-shaped beam extends downwards to form the vertical plate, the inclined plate is formed by bending the vertical plate towards the convex side of the hat-shaped beam in an inclined mode, and the horizontal plate is formed by bending the inclined plate towards the horizontal direction; each bend forms a transition fillet.

According to one embodiment of the invention, a gap is reserved between the two transverse ends of the side wall lower edge beam and the adjacent upright columns, and the two transverse ends of the side wall lower edge beam are connected with the corresponding upright columns through connecting plates;

the connecting plate comprises a vertical plate body and a transverse plate body, wherein the transverse plate body transversely extends to one side at least from the vertical plate body, the vertical plate body is used for being attached to and welded on the stand column, and the transverse plate body is used for being attached to and welded on the outer surface of the end part of the lower cross beam.

According to one embodiment of the invention, the connecting plate is L-shaped or T-shaped, the L-shaped connecting plate is used for connecting between the end part of the lower cross beam and the door upright, and the T-shaped connecting plate is used for connecting between the middle upright and the end part of the lower cross beam positioned on the two lateral sides of the middle upright;

the connecting plate is connected with the upright post and the end part of the lower cross beam through resistance spot welding.

According to one embodiment of the invention, the outer wall panel is arranged on the outer side of the upright post, the two side flanges and the vertical plates of the lower cross beam are respectively abutted against the outer wall panel, and a triangular area is formed between the inclined plate and the outer wall panel as well as between the inclined plate and the side beam of the underframe.

According to the embodiment of the second aspect of the invention, the rail vehicle comprises an underframe and underframe boundary beams which are positioned on two transverse sides of the underframe and extend along the longitudinal direction, and the rail vehicle side wall is arranged on the underframe boundary beams.

One or more technical solutions in the embodiments of the present invention have at least one of the following technical effects:

according to the side wall of the rail vehicle, the middle upright post is not in contact with the edge beam of the underframe and is connected through the connecting piece, so that the technical problems that gaps between the upright post (the middle upright post) of the side wall and the edge beam of the underframe are inconsistent, gaps between parts of positions are large, and welding cannot be performed are solved.

The lower side beam body of the embodiment adopts a sectional type structure, and is more flexible and convenient for side wall assembly and deflection prefabrication. The structure modularization degree of the lower side beam body is high, the connection of parts is flexible, the manufacturability and the operability are good, and the structural strength is high; the lower beam body is combined with the lower cross beam to form a novel lower beam structure, so that the structural rigidity is improved, the assembly is convenient, and the assembly efficiency is improved; in addition, the oblique transitional bending is added to the lower edge beam body, so that a certain elastic adjustment amount is provided when the lower edge beam body is rigidly connected with the edge beam of the underframe, and the fitting of the lower edge beam body and the edge beam of the underframe and the flexible adjustment of the height size of a car body are more easily realized; and the process requirements such as deflection change and the like are more easily met.

The rail vehicle provided by the embodiment of the invention has all the advantages of the rail vehicle side wall due to the installation of the rail vehicle side wall, and the description is omitted.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic front view of a side wall of a rail vehicle according to an embodiment of the present invention, in which a side wall skeleton is shown;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is an enlarged view taken at I in FIG. 1;

FIG. 4 is a schematic structural diagram of a side wall of a rail vehicle with a pillar removed from the side wall in a front view according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a side wall of a rail vehicle mounted on a side beam of an underframe according to an embodiment of the invention;

FIG. 6 is a cross-sectional view B-B of FIG. 5;

FIG. 7 is an enlarged view taken at II in FIG. 6;

FIG. 8 is a schematic view of a partial structure of an angle at which a side wall of a rail vehicle is mounted on a side sill of an underframe according to an embodiment of the invention;

FIG. 9 is a schematic view of a partial structure of another angle at which a side wall of a rail vehicle according to an embodiment of the present invention is mounted on a side sill of an underframe;

FIG. 10 is a schematic structural diagram of a side wall bottom edge beam in a front view according to an embodiment of the present invention;

FIG. 11 is a cross-sectional view C-C of FIG. 10;

FIG. 12 is a schematic structural diagram of a rail vehicle sidewall display connector according to an embodiment of the invention;

FIG. 13 is an enlarged view at III in FIG. 12;

FIG. 14 is a schematic view of a portion of a gap between a center pillar and an undercarriage side rail according to an embodiment of the present invention;

FIG. 15 is a schematic perspective view of a connector according to an embodiment of the present invention;

FIG. 16 is a side view of a connector according to an embodiment of the present invention;

fig. 17 is a front view schematically showing the structure of the connector according to the embodiment of the present invention.

Reference numerals:

10-side wall lower edge beam; 11-a lower cross beam; 12-a rocker body; 13-a riser; 14-a sloping plate; 15-horizontal plate; 20-a column; 21-a door pillar; 22-a central upright; 30-underframe edge beam; 40-a connecting plate; a 41-L-shaped connecting plate; a 42-T shaped connecting plate; 50-external wall panel; 60-a window frame; reinforcing a 61-window corner; 70-small beam; 80-a connector; 81-a first vertical rib; 82-second vertical ribs; 83-opening the hole; 84-notch.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.

In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

As shown in fig. 12 to 17, in a first aspect, a side wall (referred to as "side wall" in this embodiment) of a rail vehicle according to an embodiment of the present invention, especially a stainless steel side wall. Including the side wall skeleton that many stands 20 that set up side by side constitute, many stand 20 is including being located the door stand 21 of relative both sides and being located many middle part stands 22 between the door stand 21, the lower extreme of door stand 21 is suitable for the butt on rail vehicle's chassis boundary beam 30, and the lower extreme of door stand 21 can adopt welded fastening on chassis boundary beam 30. As shown in fig. 14, the lower end of the center pillar 22 is opposite to the upper surface of the underframe edge beam 30, that is, the center pillar 22 is not in direct contact with the underframe edge beam 30, as shown in fig. 14, the gap between the lower end of the center pillar 22 and the upper surface of the underframe edge beam 30 is a, as shown in fig. 12 to 13, the center pillar 22 and the underframe edge beam 30 are connected by a connector 80, that is, the center pillar 22 and the underframe edge beam 30 are connected by the connector 80. The middle upright post 22 and the underframe boundary beam 30 are not in contact and are connected through the connecting piece 80, so that the technical problems that the gap between the side wall upright post (the middle upright post 22) and the underframe boundary beam 30 is inconsistent, the gap between partial positions is large and welding cannot be performed are solved.

According to an embodiment of the present invention, as shown in fig. 15 to 17, the connecting member 80 includes a first vertical rib 81 and a second vertical rib 82 bent along the same side of both vertical sides of the first vertical rib 81 to form a C-like shape.

Specifically, the first vertical rib 81 and the pair of second vertical ribs 82 form a groove, the size and the shape of the groove are matched with the outer surface of the middle upright post 22, and after the groove is clamped on the middle upright post 22, the inner side wall of the groove is attached to the outer surface of the middle upright post 22, so that 3 surfaces of the connecting piece 80 can be attached to and connected with the middle upright post 22, and the structural strength is high; the first vertical rib 81 and at least one of the pair of second vertical ribs 82 are connected to the middle upright column 22 by welding, in other words, only the first vertical rib 81 may be welded to the middle upright column 22, the first vertical rib 81 may be welded to one of the second vertical ribs 82 and the middle upright column 22, the two second vertical ribs 82 may be welded to the middle upright column 22, and the first vertical rib 81 and the two second vertical ribs 82 may be welded to the middle upright column 22. Of course, for the reliability of the connection, the embodiment preferably uses the first vertical rib 81 and the two second vertical ribs 82 both welded to the middle pillar 22.

Further, the first vertical rib 81 abuts against and is welded to the bottom ends of the pair of second vertical ribs 82 on the underframe edge beam 30.

In order to facilitate welding, according to an embodiment of the present invention, openings 83 are formed on the surfaces of the first vertical rib 81 and the pair of second vertical ribs 82, and the first vertical rib 81 and the pair of second vertical ribs 82 are welded to the middle upright 22 through the respective openings 83. By adopting the welding mode, the connection between the vertical surface of the connecting piece 80 and the vertical surface of the middle upright post 22 is tighter, and the structural strength is also improved to a certain extent.

In one embodiment, the opening 83 may be an elongated circular hole, and the length direction of the elongated circular hole is along the vertical direction of the first vertical rib 81 and the second vertical rib 82.

According to one embodiment of the invention, notches 84 are respectively formed on the vertical outer edges of the pair of second vertical ribs 82, the surfaces of the notches 84 are concave arc surfaces, and the joints of the notches 84 and the second vertical ribs 82 are in arc surface transition connection; reducing stress concentration.

In addition, in the existing stainless steel car body manufacturing process, due to the fact that the car body has the requirement of upwarping, the underframe can be prefabricated to have corresponding deflection integrally for manufacturing, prefabrication of the integral deflection of the side wall is generally achieved through unit placement and doorway size adjustment, and due to the fact that a single side wall unit can only be prefabricated with small deflection or no deflection due to the fact that the side wall is provided with long side beams, the deflection change requirement is not consistent and the like, the side wall is difficult to achieve curve change consistent with the deflection of the underframe. In the side wall and chassis assembling process, because the amount of deflection can not be completely matched, the lower edge beam body and the chassis edge beam are poorly attached, the welding requirements can not be met, the height and the size are difficult to adjust, and the assembling workload is large. In order to solve the problem, the embodiment of the invention adopts the following technical scheme:

the embodiment further includes a sidewall sill 10 installed between every two adjacent columns 20, that is, a sidewall sill 10 is installed between every two adjacent columns 20, and all sidewall sills 10 form a sill body 12. The main body of the lower side beam body 12 is of a sectional structure, so that the side wall assembly and the deflection prefabrication are more flexible and convenient. The main body of the lower side beam body 12 has high structure modularization degree, flexible component connection, good manufacturability and operability and high structural strength.

Specifically, as shown in fig. 7 in combination with fig. 9 to 11, the sidewall rocker 10 includes a lower beam 11 and a rocker body 12 integrally formed with the lower beam 11, where the rocker body 12 of the sidewall in the prior art is a through-long rocker, and the through-long rocker is not connected to the lower beam 11 located above and adjacent to the through-long rocker, and the through-long rocker and the lower beam are arranged at intervals and are respectively and independently installed. In the embodiment, the lower beam body 12 is combined with the lower beam 11 to form a novel lower beam structure, so that the structural rigidity is improved, the assembly is facilitated, and the assembly efficiency is improved.

In one embodiment, as shown in fig. 9 to 11, the lower side sill body 12 includes a vertical plate 13 extending downward along the lower side wall of the lower cross member 11, a sloping plate 14 formed by bending the vertical plate 13 to incline toward the lower side wall of the lower cross member 11, and a horizontal plate 15 formed by horizontally extending an end of the sloping plate 14; the horizontal plate 15 is intended to rest against an undercarriage side rail 30 of the rail vehicle, i.e., the horizontal plate 15 of the rocker body 12 rests against the undercarriage side rail 30 when the rocker body 12 is installed. According to the required deflection requirement, the inclination angle of the inclined plate 14 is adjusted by applying different acting forces, so that the lower side beam body 12 has corresponding deflection, and flexible assembly is realized. For example, if the required deflection is small, the rocker body 12 is further upward in the height direction of the vehicle body, so that the stress on the swash plate 14 is small, and the inclination of the swash plate 14 is relatively small; on the contrary, if the required deflection is large, the rocker body 12 is pressed downward in the height direction of the vehicle body, so that the force on the swash plate 14 is large, the inclination of the swash plate 14 is relatively large, as indicated in fig. 11, the included angle between the swash plate 14 and the horizontal plate 15 is 134 °, and the angle is changed according to adjustment.

In the embodiment, the oblique transitional bending is added to the lower side beam body 12, so that a certain elastic adjustment amount is provided when the lower side beam body is rigidly connected with the underframe side beam 30, and the attachment of the lower side beam body 12 and the underframe side beam 30 and the flexible adjustment of the height and the size of the car body are more easily realized; and the process requirements such as deflection change and the like are more easily met.

According to an embodiment of the invention, the lower cross beam 11 is a hat-shaped beam, the hat-shaped beam structure is a common structure, flanges are arranged on two sides of the hat-shaped beam, the flanges on the lower side of the hat-shaped beam extend downwards to form the vertical plates 13, the inclined plates 14 are formed by bending the vertical plates 13 towards the convex side of the hat-shaped beam in an inclined mode, and the horizontal plates 15 are formed by bending the inclined plates 14 towards the horizontal direction, so that the lower side beam body 12 is integrally formed under the hat-shaped beam, and the overall structural rigidity is improved.

According to an embodiment of the present invention, the vertical plate 13, the inclined plate 14, and the horizontal plate 15 are integrally formed with the hat-shaped beam by bending, and each bending is formed with a transition fillet to avoid stress concentration and facilitate adjustment of the inclination angle of the inclined plate 14.

According to an embodiment of the present invention, a gap is left between each of the two transverse ends of the side wall lower edge beam 10 and the adjacent upright column 20, and the gap may be controlled to be 2mm, or may be other suitable parameters, so that each section of the side wall lower edge beam 10 may form a certain height difference in the height direction according to the process requirements, so that each side wall lower edge beam 10 has flexibility, or each side wall lower edge beam 10 may have different flexibility, or of course, some of the side wall lower edge beams 10 may have the same flexibility, which may be flexibly set according to the specific requirements.

Further, as shown in fig. 1, the two transverse ends of the side wall lower edge beam 10 are connected with the corresponding upright columns 20 through the connecting plates 40, the connecting plates 40 can be spot-welded on the upright columns 20, and then the end portions of the lower cross beams 11 of the side wall lower edge beam 10 are spot-welded with the connecting plates 40, so that the side wall lower edge beam 10 is conveniently installed and fixed, and welding deformation is reduced.

Specifically, the connecting plate 40 includes vertical plate body and edge vertical plate body is at least to the horizontal plate body of one side horizontal extension, vertical plate body is used for pasting and welding on stand 20, horizontal plate body is used for pasting and welding the tip surface of bottom end rail 11, that is to say, vertical plate body is used for welding with stand 20, and horizontal plate body extends to the tip surface of bottom end rail 11, is convenient for with the tip surface welding of bottom end rail 11 to it is together fixed with stand 20 to be in the same place bottom end rail 11.

It can be understood that the door pillar 21 is connected to the lower beam 11 only at one side because one side needs to be left free for installing the door body, and both sides are connected to the lower beam 11 for the middle pillar 20.

As shown in fig. 3, the connecting plate 40 is L-shaped or T-shaped, and an L-shaped connecting plate 41 is used for connecting between the end of the lower beam 11 and the door pillar 21; the T-shaped connecting plate 42 is used to connect between the middle upright post 22 and the ends of the lower cross beam 11 on both lateral sides of the middle upright post 22. By designing different shapes of the connecting plates 40 to adapt to different connecting positions, the middle upright post 22 and the lower cross beams 11 on two sides of the middle upright post can be connected through the cross-shaped connecting plates 40.

In a specific embodiment, the connecting plate 40 is connected with the end portions of the upright post 20 and the lower cross beam 11 through resistance spot welding, so that the connection is convenient in a resistance spot welding manner, and the welding amount is small.

According to an embodiment of the present invention, as shown in fig. 6 to 7 and 9, the side wall structure further includes an outer wall panel 50 (including an upper wall panel and a lower wall panel), the outer wall panel 50 is installed outside a side wall framework composed of the pillars 20, the side wall lower edge beams 10, and the like, both side flanges of the lower cross beam 11 and the vertical panels 13 are attached to and fixed to the outer wall panel 50, and a triangular region is formed between the inclined panel 14 and the outer wall panel 50 as well as between the inclined panel 14 and the side frame beams 30 of the railway vehicle, so that the triangular structure is stronger and has better stability, and the inclined panel 14 is used as an inclined side of a triangle, so that the angle is adjustable and the flexibility is higher.

According to an embodiment of the present invention, in order to ensure the connection strength of the whole side wall framework, a plurality of small beams 70 are further connected between adjacent columns 20 and above the lower beam 11, the small beams 70 may also be hat-shaped beams, and the small beams 70 are arranged between adjacent columns 20 at intervals along the height direction.

In addition, as shown in fig. 1 and 5, a window frame 60 and window corner reinforcements 61 located at four corners of the window frame 60 are formed on the side wall framework, so that the side wall framework is highly integrated.

In a second aspect, the rail vehicle according to the embodiment of the invention comprises an underframe and underframe boundary beams 30 which are positioned on two transverse sides of the underframe and extend longitudinally, and further comprises the rail vehicle side walls, wherein the rail vehicle side walls are installed on the underframe boundary beams 30, the bottom surfaces of the horizontal plates 15 are in lap joint with the upper surfaces of the underframe boundary beams 30, and the lower side beam body 12 is formed in a process of increasing oblique transition bending and reducing the size of a lap joint plane with the underframe boundary beams 30, so that the problems that the lower side beam body 12 is in poor fit with the underframe boundary beams 30, welding requirements cannot be met, height dimension adjustment is difficult and assembly workload is large due to the fact that deflection cannot be completely matched in the existing side wall and underframe assembly process are solved. In addition, this rail vehicle has above-mentioned rail vehicle side wall's whole advantages owing to install as above-mentioned rail vehicle side wall, and it is no longer repeated here.

The above embodiments are merely illustrative of the present invention and are not to be construed as limiting the invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and the technical solution of the present invention is covered by the claims of the present invention.

Claims

1. A rail vehicle side wall comprises a plurality of stand columns arranged side by side, wherein the stand columns comprise door stand columns positioned on two sides and a plurality of middle stand columns positioned between the door stand columns; the side wall lower edge beam is arranged between every two adjacent stand columns and comprises a lower cross beam and a lower edge beam body integrally formed with the lower cross beam, the lower edge beam body comprises a vertical plate extending downwards along the lower side wall of the lower cross beam, an inclined plate formed by bending the vertical plate obliquely towards the side where the lower cross beam is located, and a horizontal plate formed by horizontally extending the end part of the inclined plate; the horizontal plate is used for being attached to the side beam of the underframe, and the inclination angle of the inclined plate is adjusted to enable the side beam body to have corresponding deflection.

2. The rail vehicle sidewall as claimed in claim 1, wherein the connecting member includes a first vertical rib and a second vertical rib bent along the same side of the first vertical rib; the first vertical rib and the pair of second vertical ribs form a groove in a surrounding mode, the groove is used for being clamped on the middle upright column, at least one of the first vertical rib and the pair of second vertical ribs is connected with the middle upright column in a welding mode, and the bottom end of the first vertical rib and the pair of second vertical ribs are abutted to and welded on the side beam of the underframe.

3. The rail vehicle sidewall of claim 2, wherein openings are formed in the surfaces of the first vertical rib and the pair of second vertical ribs, and the first vertical rib and the pair of second vertical ribs are welded to the middle upright column through the respective openings.

4. The rail vehicle sidewall as claimed in claim 2, wherein a pair of the second vertical ribs are provided with notches at their outer vertical edges, the surface of each notch is an inward concave arc surface, and the connection between the notch and the second vertical rib is an arc surface transition connection.

5. The rail vehicle sidewall as claimed in claim 1, wherein the lower cross member is a hat-shaped beam, a lower flange of the hat-shaped beam extends downward to form the vertical plate, the sloping plate is formed by bending the vertical plate to the convex side of the hat-shaped beam in an inclined manner, and the horizontal plate is formed by bending the sloping plate in a horizontal direction; each bend forms a transition fillet.

6. The rail vehicle side wall according to claim 1, wherein a gap is left between each of the two transverse ends of the side wall lower edge beam and the adjacent upright columns, and the two transverse ends of the side wall lower edge beam are connected with the corresponding upright columns through connecting plates;

7. The rail vehicle sidewall of claim 6, wherein the connecting plate is L-shaped or T-shaped, the L-shaped connecting plate is configured to be connected between an end of the lower cross beam and the door pillar, and the T-shaped connecting plate is configured to be connected between the middle pillar and ends of the lower cross beam located on both lateral sides of the middle pillar;

8. The rail vehicle side wall according to any one of claims 5 to 7, further comprising an outer wall panel, wherein the outer wall panel is installed on the outer side of the pillar, both side flanges of the lower cross member and the vertical plates are attached to the outer wall panel, and a triangular area is formed between the inclined plate and the outer wall panel as well as between the inclined plate and the side beam of the underframe.

9. A rail vehicle comprising an underframe and underframe edge beams which are located on both transverse sides of the underframe and extend in the longitudinal direction, and further comprising the rail vehicle sidewall as claimed in any one of claims 1 to 8, mounted on the underframe edge beams.