CN111806478B

CN111806478B - Rail vehicle headwall and rail vehicle

Info

Publication number: CN111806478B
Application number: CN202010736279.5A
Authority: CN
Inventors: 杨小荣; 尚克明; 杨福鹏; 刘龙玺; 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: CN111806478A

Abstract

The invention relates to the field of railway vehicles, and provides a railway vehicle end wall and a railway vehicle. The rail vehicle end wall comprises an end wall frame structure and an end wall plate, wherein the end wall frame structure comprises a pair of end corner columns, a pair of door stand columns arranged between the pair of end corner columns at intervals, and a door upper cross beam penetrating through the pair of door stand columns and fixedly connected with the pair of end corner columns respectively, and a plurality of small cross beams are longitudinally connected between the end corner columns and the door stand columns at intervals; the end angle column comprises a closed structure consisting of an end angle outer upright column, an end angle inner upright column and an end angle sealing plate; the upper door beam is an end door mounting beam at the position between the pair of door upright posts, and the cross section of the end door mounting beam is S-shaped. The end wall has the advantages of simple structure, strong bearing capacity and easy processing and manufacturing, and the end corner post adopts a closed end corner post structure, has strong impact resistance and is convenient to install; the upper door beam is of an S-shaped section structure, is not only used as a framework for bearing, but also plays a role in installing the end door.

Description

Rail vehicle headwall and rail vehicle

Technical Field

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

Background

The rail vehicle body consists of an underframe, side walls, end walls and a roof, wherein the end walls are used as important parts of the vehicle body and are parts for bearing through passages among vehicles, and the underframe, the side walls and the roof are connected together, so that the rail vehicle has higher requirements on strength and rigidity.

The stainless steel end wall end corner post of the existing railway vehicle is weak in bearing capacity and cannot bear large end impact force, and the end corner post structure is formed by only profiling three layers of plates, so that the strength and rigidity of the whole end wall are weakened.

In addition, current rail vehicle guest room air conditioner exhaust emission device all sets up on the roof, because the roof often can receive the rainwater impact, after exhaust emission device structure welding seam is sealed not tight or the glue seam became invalid, can increase exhaust emission device toward the car in the probability of seeping water, also there is the minority vehicle at present to set up exhaust emission device on the end wall, nevertheless because guest room air conditioner negative pressure influences, very easily inhale the car with the outer foreign matter of car in, greatly reduced air conditioner effect, can increase the energy consumption simultaneously, increase user's operation cost.

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 railway vehicle end wall, which solves the technical problems that the existing railway vehicle wall end corner post has weak bearing capacity and cannot bear larger end impact force, and the strength and the rigidity of the whole end wall are weakened because the end corner post structure is formed by pressing three-layer plates.

The invention further provides the railway vehicle.

According to an embodiment of a first aspect of the invention, a rail vehicle headwall comprises:

the end wall frame structure comprises a pair of end corner posts, a pair of door stand columns arranged between the end corner posts at intervals, and a door upper cross beam penetrating through the pair of door stand columns and fixedly connected with the end corner posts respectively, wherein a plurality of small cross beams are connected between the end corner posts and the door stand columns at intervals along the longitudinal direction;

the end angle post includes end angle outer column, end angle inner column and end angle shrouding, end angle outer column includes the first indent die cavity of one side open and outwards turns over the first horizontal turn-ups of rolling over and longitudinal extension along this open horizontal relative both sides, end angle inner column includes the horizontal turn-ups of the second that one side open second indent die cavity and outwards turns over the book and longitudinal extension along this open horizontal relative both sides, the uncovered side orientation of second indent die cavity the uncovered side lock of first indent die cavity is in the indent die cavity of second, the horizontal turn-ups of second with the medial surface laminating of first indent die cavity, end angle shrouding lid is established a pair of first horizontal turn-ups outer and with the lateral surface fixed connection of second indent die cavity, the lateral surface of first indent die cavity be used for with end wall board fixed connection.

According to an embodiment of the invention, the upper door beam is an end door mounting beam at a position between the pair of door columns, the cross section of the end door mounting beam is similar to an S shape, and specifically comprises an upper cavity with an opening facing one side of the end wall plate and a lower cavity with an opening facing away from one side of the end wall plate, a plurality of upper columns and a plurality of end door connecting parts are arranged in the upper cavity at intervals, a plurality of lower columns are arranged in the lower cavity at intervals, and the lower cavity forms a door head.

According to one embodiment of the invention, the upper door beam is a hat-shaped beam at a position between the end corner post and the door upright post and is used for being fixedly connected with an end wall plate, and a mounting notch for the penetration of the door upright post is formed at a position between the end door mounting beam and the hat-shaped beam.

According to one embodiment of the invention, the end door connecting part is a screw base for connecting the mounting mechanism of the end door by a bolt.

According to one embodiment of the invention, the end corner outer upright column, the end corner inner upright column and the end corner sealing plate are all provided with process round holes for resistance spot welding;

the cross section of the small beam is in a hat shape.

According to one embodiment of the present invention, the end wall plate is provided with a waste trap shielding cover at a region defined above a pair of the door pillar and the door upper rail, and a filter screen assembly is detachably attached to the bottom of the waste trap shielding cover.

According to one embodiment of the invention, the waste discharge device shielding cover comprises a cover body, one side of the cover body is open, a waste air outlet is formed in the bottom of the cover body, the open side of the cover body is buckled on the end wall plate and forms an air outlet cavity with the end wall plate, the end wall plate is provided with an air outlet communicated with the air outlet cavity, and the filter screen assembly is detachably mounted at the waste air outlet.

According to one embodiment of the invention, the two transverse ends of the cover body are butted with a pair of door columns, the cover body comprises a top wall extending horizontally, an upper side wall inclining from the top wall downwards and towards the direction far away from the end wallboard and a lower side wall inclining from the bottom of the upper side wall downwards and towards the direction close to the end wallboard, and a gap is reserved between the bottom of the lower side wall and the end wallboard to form the waste air exhaust outlet; the outer fixedly connected with first support of lateral wall down, the horizontal both ends difference fixedly connected with horizontal support of cover body bottom, first support and two all be equipped with the screw hole on the horizontal support, the filter screen subassembly is installed through threaded fastener on the installation face that first support, two horizontal supports are constituteed.

According to an embodiment of the present invention, the filter screen assembly includes a first filter screen frame body, a second filter screen frame body, and a filter screen sandwiched between the first filter screen frame body and the second filter screen frame body, the first filter screen frame body, the filter screen, and the second filter screen frame body are connected into a whole by rivets, reinforcing seats are respectively disposed at two ends of one of the first filter screen frame body and the second filter screen frame body facing the exhaust air outlet, threaded holes are formed in the reinforcing seats, and the filter screen assembly is detachably mounted at the bottom of the exhaust device blocking cover by bolts penetrating through the threaded holes of the reinforcing seats, the threaded holes of the first support, and the threaded holes of the two transverse supports.

According to the embodiment of the second aspect of the invention, the rail vehicle is provided with the rail vehicle end wall.

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

according to the rail vehicle end wall provided by the embodiment of the invention, the integral end wall frame structure is formed by the end corner posts, the door stand columns, the door upper cross beams and the small cross beams, so that the end wall is simple in structure, strong in bearing capacity and easy to process and manufacture, and the end corner posts are of a closed end corner post structure, so that the end wall has strong impact resistance and is convenient to install.

The rail vehicle provided by the embodiment of the invention has all the advantages of the rail vehicle end wall due to the installation of the rail vehicle end 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 view of an angled configuration of a rail vehicle headwall in accordance with an embodiment of the present invention;

FIG. 2 is a schematic front view of a rail vehicle headwall of an embodiment of the present invention;

FIG. 3 is a sectional view A-A of FIG. 2;

FIG. 4 is a cross-sectional view C-C of FIG. 2;

FIG. 5 is a schematic front view of a cross member of the door according to the embodiment of the present invention;

FIG. 6 is a schematic view of a rear side structure of a door upper beam according to an embodiment of the present invention;

FIG. 7 is a cross-sectional view B-B of FIG. 2;

FIG. 8 is a front view schematically illustrating a shield cover of the waste discharging device in accordance with the embodiment of the present invention;

FIG. 9 is a side view schematically illustrating a waste device shield according to an embodiment of the present invention;

FIG. 10 is a front view of a screen assembly according to an embodiment of the present invention;

FIG. 11 is a side view schematic of the structure of FIG. 10;

fig. 12 is a front view of a first screen frame according to an embodiment of the present invention;

FIG. 13 is a side view schematic of the structure of FIG. 12;

fig. 14 is a schematic front view of a second screen frame according to an embodiment of the present invention.

Reference numerals:

1-end corner posts; 11-end corner outer columns; 12-end angle inner column; 13-end corner closing plate; 2-door upper beam; 21-end door mounting cross beam; 211-upper cavity; 222-an upper column; 223-screw seat; 224-lower cavity; 225-lower upright; 22-hat beam; 23-mounting a notch; 3-door column; 4-a small cross beam; 5-end wall plate; 51-an air outlet; 52-a wind deflector; 6-the waste discharge device covers the cover; 61-a cover body; 62-waste air outlet; 7-a screen assembly; 71-a first screen frame; 72-a second screen frame; 73-a filter screen; 8-a first support; 9-a transverse support; 10-a reinforcement seat.

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. 1 to 10, in a first aspect, a railway vehicle headwall according to an embodiment of the present invention includes a headwall frame structure and a headwall panel 5 fixedly connected to the headwall frame structure, wherein after the headwall frame structure is formed, one side surface of the headwall panel 5 is attached to the headwall frame structure and is connected to the headwall frame structure by resistance spot welding.

Specifically, as shown in fig. 1 and 2, the end wall frame structure includes a pair of end corner posts 1, a pair of door pillars 3 disposed between the pair of end corner posts 1 at intervals, and a door upper cross member 2 spanning and penetrating the pair of door pillars 3 and fixedly connected to the pair of end corner posts 1, the end corner posts 1 and the door pillars 3 are connected into a whole by the door upper cross member 2, a plurality of small cross members 4 are longitudinally connected between the end corner posts 1 and the door pillars 3 at intervals, and the area between the end pillars and the door pillars 3 is connected by the small cross members 4 to improve the connection strength between the end pillars and the door pillars 3, thereby forming an integral end wall frame structure.

In the present embodiment, the corner post 1 is of a closed structure, and specifically, as shown in fig. 3, the corner post 1 includes a corner outer column 11, a corner inner column 12 and a corner closing plate 13.

The "lateral direction" and the "longitudinal direction" described below are both described in the state where the headwall is mounted, and are the lateral direction in the vehicle width direction and the longitudinal direction in the vehicle height direction.

Further, the corner outer pillar 11 includes a first concave cavity with one side open and a first horizontal flange folded outwardly and extending longitudinally along two laterally opposite sides of the first concave cavity open, and in general, the corner outer pillar 11 forms a vertically disposed large hat beam 22, and the corner inner pillar 12 includes a second concave cavity with one side open and a second horizontal flange folded outwardly and extending longitudinally along two laterally opposite sides of the second concave cavity open, and in general, the corner inner pillar 12 forms a vertically disposed small hat beam 22, and the open side of the second concave cavity is engaged in the second concave cavity toward the open side of the first concave cavity, that is, the small hat beam 22 is reversely engaged in the large hat beam 22, and of course, here, the terms "large hat beam 22" and "small hat beam 22" are only relative.

Further, the laminating of the medial surface of second horizontal turn-ups and first indent die cavity, the welding of being convenient for, the lateral surface of second indent die cavity and the planar parallel and level of the corresponding side place of first horizontal turn-ups, end angle shrouding 13 lid is established outside a pair of first horizontal turn-ups and with the lateral surface fixed connection of second indent die cavity, thereby form confined end angle post 1 structure, and 1 simple to operate of end angle post of this structure, only need during the installation with little cap type roof beam 22 back-off in big cap type roof beam 22, and cover end angle shrouding 13 can, then utilize means such as resistance spot welding with big cap type roof beam 22, little cap type roof beam 22 and end angle shrouding 13 welding together, form integral type and stable in structure, the 1 structure of end angle post that intensity is high.

It should be further noted that the cavity inside the large hat beam 22 is supported by the small hat beam 22, so that the strength and rigidity are improved, the assembly is very convenient, the processing and the manufacturing are easy, the bearing capacity of the end corner post 1 is greatly improved, and the bearing capacity of the whole end wall is also improved.

The concrete mounting means of end corner post 1 and end wall board 5 does, and the lateral surface and the end wall board 5 fixed connection of first indent die cavity specifically can adopt resistance spot welding to weld together.

According to an embodiment of the present invention, as shown in fig. 5 and 6, the door upper beam 2 is an end door mounting beam 21 at a position between a pair of door columns 3, i.e. for mounting an end door, the cross section of the end door mounting beam 21 is S-shaped, and specifically includes an upper cavity 211 with an opening facing to one side of the end wall plate 5 and a lower cavity 224 with an opening facing away from one side of the end wall plate 5, and the upper cavity 211 and the lower cavity 224 are transitionally connected to form an S-shaped structure; a plurality of upper columns 222 and a plurality of end door connecting parts are arranged in the upper cavity 211 at intervals, the structural strength of the upper cavity 211 is enhanced through the upper columns 222, and the end door connecting parts, such as screw seats 223 described below, are arranged between every two adjacent upper columns 222, so that the installation of end doors is facilitated, and the upper cross beam 2 of the end door installation rear door can also have enough supporting strength.

Specifically, a plurality of lower upright posts 225 are arranged in the lower cavity 224 at intervals, the lower cavity 224 forms a door head, and the structural strength of the lower cavity 224 is enhanced through the lower upright posts 225, so that the door head is ensured to have enough use strength.

It should be noted that the upper cavity 211 and the lower cavity 224 are integrally formed, and an upwardly extending flange is formed on the upper side wall of the upper cavity 211 to facilitate welding to the end wall plate 5, and in addition, the side of the lower cavity 224 facing away from the end wall plate 5 is at least partially welded to the end wall plate 5, so that the end door mounting cross member 21 is reliably mounted and fixed.

According to one embodiment of the invention, the upper door beam 2 is a hat-shaped beam at the position between the end corner post 1 and the door upright post 3, so as to be conveniently and fixedly connected with the end wall plate 5, and the upper flanging and the lower flanging of the hat-shaped beam are welded with the end wall plate 5.

Further, the door upper beam 2 forms an installation gap 23 for the door upright post 3 to penetrate through at the position between the end door installation beam 21 and the hat-shaped beam, namely, at the position where the door upright post 3 penetrates, the door upper beam 2 is not provided with structures such as flanging and the like, forms a shape similar to the gap, matches with the side wall structure of the door upright post 3, and facilitates the penetration of the door upright post 3.

According to an embodiment of the present invention, the end door connecting portion is a screw seat 223 for connecting the mounting mechanism of the end door by a bolt, so as to mount the end door at the position of the upper cavity 211 of the door beam 2, so that the door beam 2 has both the end door mounting and the structural bearing functions.

In order to facilitate the welding and fixing of the end angle outer column 11, the end angle inner column 12 and the end angle sealing plate 13, in one embodiment of the invention, the end angle outer column 11, the end angle inner column 12 and the end angle sealing plate 13 are all provided with process round holes for resistance spot welding, and spot welding is carried out by extending spot welding heads into the process round holes.

As shown in fig. 4, the cross section of the small beam 4 is hat-shaped, that is, the small beam 4 is also hat-shaped 22, so that the structure is simple and the welding with the end wall plate 5 is convenient.

According to an embodiment of the present invention, the end wall plate 5 is provided with a waste device shielding cover 6 in a region defined above the pair of door pillars 3 and the door upper cross member 2, and a filter screen assembly 7 is detachably attached to the bottom of the waste device shielding cover 6, so that the waste device shielding cover is easy to install and maintain, and can effectively prevent foreign objects from being sucked.

Specifically, as shown in fig. 7 to 9, the waste exhaust device shielding cover 6 includes a cover body 61, one side of the cover body 61 is open, a waste exhaust outlet 62 is formed at the bottom of the cover body 61, the open side of the cover body 61 is buckled on the end wall plate 5 to form an exhaust cavity with the end wall plate 5, the end wall plate 5 is provided with an air outlet 51 communicated with the exhaust cavity, an air deflector 52 for controlling the direction of exhaust air can be arranged at the air outlet 51, for example, exhaust air in a vehicle is exhausted from the vehicle roof, the air deflector 52 can be towards the direction of the vehicle roof air outlet 51, the filter screen assembly 7 is detachably mounted at the waste exhaust outlet 62, and by arranging the filter screen assembly 7, on one hand, foreign matters are prevented from entering the exhaust cavity, and on the other hand, the.

According to an embodiment of the present invention, the two lateral ends of the cover body 61 are butted with the pair of door columns 3, however, baffles may be disposed at the two lateral ends of the cover body 61, the baffles, the cover body 61 and the end wall plate 5 define an air outlet chamber, the cover body 61 includes a top wall extending horizontally, an upper side wall inclined from the top wall downward and toward the direction far away from the end wall plate 5, and a lower side wall inclined from the bottom of the upper side wall downward and toward the direction near the end wall plate 5, and a gap is left between the bottom of the lower side wall and the end wall plate 5 to form the waste air outlet 62.

Further, for the convenience of filter screen subassembly 7 installation, the first support 8 of the outer fixedly connected with of lower lateral wall, the horizontal both ends difference fixedly connected with horizontal support 9 of the cover body 61 bottom, first support 8 and horizontal support 9 all are the L type, one side of L type all extends to the level, so that filter screen subassembly 7's installation, of course, because first support 8 installs the lower lateral wall department at the slope, contained angle between two lateral walls of first support 8 is less than 90 degrees, all be equipped with the screw hole on the horizontal lateral wall of first support 8 and two horizontal support 9, filter screen subassembly 7 passes through threaded fastener and installs at first support 8, on the installation face that two horizontal support 9 are constituteed, make things convenient for filter screen subassembly 7 dismouting.

According to an embodiment of the present invention, as shown in fig. 10 to 14, the filter screen assembly 7 includes a first filter screen frame 71, a second filter screen frame 72, and a filter screen 73 interposed between the first filter screen frame 71 and the second filter screen frame 72, wherein the first filter screen frame 71, the filter screen 73, and the second filter screen frame 72 are connected together by rivets, and are integrally assembled and disassembled, so that the assembling and disassembling efficiency is improved; the two ends of one of the first filter screen frame body 71 and the second filter screen frame body 72 facing the waste air outlet 62 are respectively provided with a reinforcing seat 10, that is, if the first filter screen frame body 71 faces the waste air outlet 62, the two ends of the first filter screen frame body 71 are provided with the reinforcing seats 10, and the same is true, if the second filter screen frame body 72 faces the waste air outlet 62, the two ends of the second filter screen frame body 72 are provided with the reinforcing seats 10, the reinforcing seats 10 can also be arranged on other sides, and are not limited to be arranged at two ends, the connecting strength of the filter screen assembly 7 can be improved through the reinforcing seats 10, the reinforcing seats 10 are provided with threaded holes, the threaded holes penetrating through the reinforcing seats 10 and the first support 8 through bolts, the threaded holes of the two transverse supports 9 detachably install the filter screen assembly 7 at the bottom of the waste exhaust device shielding cover 6, so that foreign matters can be effectively shielded, and the air conditioning effect is improved.

In addition, one of the first and second screen frames 71 and 72, which is far away from the exhaust outlet 62, is bent downward at a side close to the end wall plate 5 to form a rib, and the rib is attached to the end wall plate 5, so that the shielding effect of the mounted screen assembly 7 can be improved, and the impurities can be prevented from entering into the gap at the side edge, as shown in fig. 13, the embodiment is described by taking the first screen frame 71 as an example.

In a second aspect, the rail vehicle provided in the embodiment of the present invention is provided with a rail vehicle end wall, which has all the advantages of the rail vehicle end wall, and is not described herein again.

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 headwall, comprising:

the end angle column comprises an end angle outer column, an end angle inner column and an end angle sealing plate, the end angle outer column comprises a first concave cavity with one open side and first horizontal flanges which are outwards turned and longitudinally extended along the two transversely opposite sides of the open side, the end angle inner column comprises a second concave cavity with one open side and second horizontal flanges which are outwards turned and longitudinally extended along the two transversely opposite sides of the open side, the open side of the second concave cavity is buckled in the second concave cavity towards the open side of the first concave cavity, the second horizontal flanges are attached to the inner side of the first concave cavity, the end angle sealing plate is covered outside the pair of first horizontal flanges and fixedly connected with the outer side of the second concave cavity, and the outer side of the first concave cavity is fixedly connected with the end wallboard; the utility model discloses a waste air exhaust device, including door stand, door entablature, waste exhaust device, exhaust port, end wallboard is being located a pair ofly the door stand with the region that encloses above the door entablature top is installed waste exhaust device and is sheltered from the cover, waste exhaust device shelters from the bottom of cover can be dismantled and is connected with the filter screen subassembly, waste exhaust device shelters from the cover including the cover body, one side of the cover body is uncovered, waste air exit is seted up to the bottom of the cover body, the uncovered side of the cover body is detained and is established on the end wallboard, with the end wallboard encloses into the air outlet chamber, the end wallboard seted up with the air outlet of air outlet chamber intercommunication, filter screen subassembly detachably installs waste air exit department.

2. The rail vehicle end wall of claim 1, wherein the door upper cross beam is an end door mounting cross beam at a position between the pair of door uprights, the cross section of the end door mounting cross beam is S-shaped, and the end door mounting cross beam specifically comprises an upper cavity with an opening facing one side of the end wall plate and a lower cavity with an opening facing away from one side of the end wall plate, the upper cavity is internally provided with a plurality of upper uprights and a plurality of end door connecting parts at intervals, the lower cavity is internally provided with a plurality of lower uprights at intervals, and the lower cavity forms a door head.

3. The rail vehicle end wall of claim 2, wherein the door header is a hat-shaped header at a location between the end corner post and the door pillar for fixed connection to an end wall panel, the door header forming a mounting notch for the door pillar to pass through at a location between the end door mounting header and the hat-shaped header.

4. The rail vehicle headwall of claim 2, wherein the headwall attachment portion is a screw mount for attaching an attachment mechanism of the headwall via a bolt.

5. The rail vehicle headwall of claim 1, wherein the corner outer uprights, the corner inner uprights and the corner seal plate are all provided with process round holes for resistance spot welding;

the cross section of the small beam is in a hat shape.

6. The railway vehicle headwall of claim 1, wherein the hood body includes a horizontally extending top wall, an upper side wall sloping downwardly from the top wall and away from the headwall, and a lower side wall sloping downwardly from a bottom of the upper side wall and towards the headwall, the bottom of the lower side wall being spaced from the headwall to form the exhaust outlet; the outer fixedly connected with first support of lateral wall down, the horizontal both ends difference fixedly connected with horizontal support of cover body bottom, first support and two all be equipped with the screw hole on the horizontal support, the filter screen subassembly is installed through threaded fastener on the installation face that first support, two horizontal supports are constituteed.

7. The rail vehicle headwall of claim 6, wherein the filter screen assembly includes a first filter screen frame body, a second filter screen frame body and a filter screen clamped between the first filter screen frame body and the second filter screen frame body, the first filter screen frame body, the filter screen and the second filter screen frame body are connected into a whole through rivets, reinforcing seats are respectively arranged at two ends of one of the first filter screen frame body and the second filter screen frame body, which faces the exhaust air outlet, threaded holes are formed in the reinforcing seats, and the threaded holes which penetrate through the reinforcing seats through bolts and the threaded holes of the first support and the two transverse supports enable the filter screen assembly to be detachably mounted at the bottom of the exhaust device shielding cover.

8. A rail vehicle, characterized in that a rail vehicle end wall according to any one of claims 1-7 is provided.