CN117261948A - Cab structure and rail vehicle - Google Patents

Abstract

The invention discloses a cab structure and a railway vehicle, and relates to the technical field of vehicle engineering. The cab structure comprises a cab hood, an inner beam column assembly and a rear end bent beam assembly; the back end bent beam assembly is fixed at the back side of the cab hood, the inner beam column assembly comprises two support beam assemblies which are arranged in a split mode, the two support beam assemblies are arranged in the cab hood side by side and are respectively fixed at two opposite side walls of the cab hood, and the back end of the support beam assemblies is fixed at the back end bent beam assembly. In this cab structure, inside beam column is constituteed and is constituteed including two supporting beams of split type setting, and interval and positional relationship between them have more flexibility in the assembly, but the cab hood of more models of adaptation, and the commonality is better, and during the assembly, two supporting beam constitutions can assemble respectively, and the operation is more nimble, can reduce the assembly degree of difficulty.

Description

Cab structure and rail vehicle

Technical Field

The invention relates to the technical field of vehicle engineering, in particular to a cab structure and a railway vehicle.

Background

In the cab structure design, a cab hood, an integral internal beam-column structure and a rear end bent beam are usually required to be designed, and the cab hood is installed after the integral internal beam-column structure is welded with the rear end bent beam. However, the integral internal beam column structure is adopted, so that the installation difficulty is high, the efficiency is low, and the universality of modeling of different cabs is not strong.

Therefore, how to make the internal beam-column structure easier to install and to improve the versatility is a technical problem that needs to be solved by those skilled in the art at present.

Disclosure of Invention

In view of the above, the present invention is to provide a cab structure and a rail vehicle including the cab structure, wherein the internal beam-column structure is easier to install and has better versatility.

In order to achieve the above purpose, the present invention provides the following technical solutions:

a cab structure comprises a cab hood, an inner beam column assembly and a rear end bent beam assembly; the rear end bent beam assembly is fixed on the rear side of the cab hood, the inner beam column assembly comprises two support beam assemblies which are arranged in a split mode, the two support beam assemblies are arranged in the cab hood in parallel and are respectively fixed on two opposite side walls of the cab hood, and the rear end of the support beam assemblies is fixed on the rear end bent beam assembly.

Preferably, the support beam assembly further comprises a first support beam and a connection beam group; the first support beam comprises a top beam and a stand column fixed below the middle part of the top beam so as to form a T-shaped beam, the top beam is fixed on the cab hood, the bottom end of the stand column is fixed on the connecting beam group, and the connecting beam group is fixedly connected with the rear end bent beam.

Preferably, the connecting beam group comprises a second supporting beam, a third supporting beam arranged below the second supporting beam and a fourth supporting beam fixed between the second supporting beam and the third supporting beam, wherein the rear end of the second supporting beam and the rear end of the third supporting beam are both fixed on the rear end bent beam; the first supporting beam and the fourth supporting beam are respectively fixed on the upper side and the lower side of the same position on the second supporting beam.

Preferably, the support beam assembly comprises a second support beam, the second support beam gradually extends upwards from front to back in an inclined manner, the upper end of the second support beam is fixed to the rear end bent beam assembly, and the lower end of the second support beam is used for being connected to a vehicle body underframe.

Preferably, the support beam assembly further comprises a third support beam arranged below the second support beam, the third support beam gradually extends upwards in an inclined manner from front to back, the upper end of the third support beam is fixed to the rear end bent beam assembly, and the lower end of the third support beam is connected to the underframe of the vehicle body.

Preferably, the support beam assembly further comprises a fifth support beam fixed between the second support beam and the third support beam, and an included angle between the fifth support beam and the second support beam ranges from 88 ° to 92 °.

Preferably, at least part of the components in the support beam assembly are welded together, and/or at least part of the components in the rear end bent beam assembly are welded together.

Preferably, at least two of the cab hood, the inner beam-column assembly and the rear end bent beam assembly are connected by bolts.

Preferably, the device further comprises a connecting plate, a first T-shaped bolt and a second T-shaped bolt; the rear end bent beam is provided with a key-shaped hole in sliding connection with the first T-shaped bolt, a connecting seat with a sliding groove is fixedly arranged on the cab hood, the sliding groove is in sliding connection with the second T-shaped bolt, and after the position of the first T-shaped bolt on the key-shaped hole and the position of the second T-shaped bolt on the sliding groove are adjusted, the first T-shaped bolt and the second T-shaped bolt can be fixed on the same connecting plate.

A railway vehicle comprising a cab structure as above.

The cab structure provided by the invention comprises a cab hood, an inner beam column component and a rear end bent beam component; the back end bent beam assembly is fixed at the back side of the cab hood, the inner beam column assembly comprises two support beam assemblies which are arranged in a split mode, the two support beam assemblies are arranged in the cab hood side by side and are respectively fixed at two opposite side walls of the cab hood, and the back end of the support beam assemblies is fixed at the back end bent beam assembly.

In this cab structure, inside beam column is constituteed and is constituteed including two supporting beams of split type setting, and interval and positional relationship between them have more flexibility in the assembly, but the cab hood of more models of adaptation, and the commonality is better, and during the assembly, two supporting beam constitutions can assemble respectively, and the operation is more nimble, can reduce the assembly degree of difficulty.

Drawings

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

FIG. 1 is a schematic view of a cab structure according to an embodiment of the present invention;

FIG. 2 is a front view of FIG. 1;

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

FIG. 4 is a schematic view of a structure of a rear end beam assembly according to a first embodiment of the cab structure provided by the present invention;

FIG. 5 is a front view of an interior beam-column assembly of a first embodiment of a cab structure provided by the present invention;

FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5, with A-A being the longitudinal centerline position of the vehicle body;

FIG. 7 is a top view of an interior beam-column assembly of a first embodiment of a cab structure provided by the present invention;

FIG. 8 is a first view angle block diagram of an internal beam-column assembly according to a first embodiment of the cab structure provided by the present invention;

FIG. 9 is a view of a second view angle of the interior beam-column assembly of the first embodiment of the cab structure provided by the present invention;

FIG. 10 is a block diagram of a first support beam of a first embodiment of a cab structure provided by the present invention;

FIG. 11 is a block diagram of a chute, key-shaped hole connection area of a first embodiment of a cab structure provided by the present invention;

FIG. 12 is an enlarged view of the chute at I of FIG. 11, B being a weld;

FIG. 13 is an enlarged view of the key hole at II of FIG. 11;

fig. 14 is a cross-sectional view of a chute, key-shaped hole connection area of a first embodiment of a cab structure provided by the invention.

Reference numerals:

cab hood 1, front window connecting frame 11, connecting seat 12, chute 121;

an inner beam column assembly 2, a support beam assembly 21, a first support beam 211, a top beam 2111, a column 2112, a second support beam 212, a third support beam 213, a fourth support beam 214, a fifth support beam 215, a front mounting seat 216, a bottom mounting seat 217, an upper mounting seat 219, and a reinforcing plate 2110;

the rear end bent beam assembly 3, the rear mounting seat 31, the upper bent beam 32, the rear upright post 33, the key-shaped hole 34, the large diameter part 341 and the small diameter part 342;

the connecting plate 35, the first connecting hole 351, the second connecting hole 352, the first T-bolt 353, the second T-bolt 354, the nut 355, the washer 356, the adjusting pad 357.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The invention provides a cab structure and a railway vehicle comprising the cab structure, wherein the internal beam column structure is easier to install and has better universality.

Referring to fig. 1 to 14, the specific embodiment of the cab structure provided by the invention includes a cab hood 1, an inner beam-column assembly 2 and a rear end bent beam assembly 3. The back end bent beam assembly 3 and the inner beam column assembly 2 are fixed on the back side of the cab hood 1, and the cab hood 1 is positioned outside the inner beam column assembly 2.

As shown in fig. 1, the cab hood 1 includes a U-shaped frame open toward the rear side, and can secure the exterior three-dimensional curved surface molding accuracy. The cab hood 1 consists of a glass fiber reinforced plastic outer cover and an inner foam reinforcing rib.

As shown in fig. 3 and 5, the inner beam-column assembly 2 includes two support beam assemblies 21 that are provided in a split type, that is, the two support beam assemblies 21 are independent structures that are not directly connected together, and can be assembled separately. The two support beam assemblies 21 are arranged in parallel in the cab hood 1, the two support beam assemblies 21 are respectively fixed on two opposite side walls of the cab hood 1, and the rear ends of the support beam assemblies 21 are fixed on the rear end bent beam assembly 3.

In this cab structure, inside beam column is constituteed 2 and is constituteed 21 including two supporting beams of split type setting, and interval and positional relationship between them have more flexibility in the assembly, but the cab hood 1 of more models of adaptation, and the commonality is better, and during the assembly, two supporting beams are constituteed 21 and can be assembled respectively, and the operation is more nimble, can reduce the assembly degree of difficulty.

Further, as shown in fig. 3 to 9, the support beam assembly 21 includes a first support beam 211 and a connection beam group fixed to the first support beam 211, the first support beam 211 is fixedly connected to the cab hood 1, and the connection beam group is fixedly connected to the rear end bent beam assembly 3. Alternatively, the connection beam group may be fixedly connected to the cab hood 1 at the same time.

As shown in fig. 3, 6 and 10, the first support beam 211 includes a top beam 2111 and a column 2112 fixed under the middle of the top beam 2111, so that the first support beam 211 integrally constitutes a T-beam. Roof rail 2111 is secured to cab hood 1, specifically by bolting. The bottom ends of the columns 2112 are secured to the set of connection beams, which may be welded in particular. Since the roof beam 2111 has a certain extension in the horizontal direction, more connection points are provided for connection with the cab hood 1, and in particular, the roof beam 2111 can be disposed at a position where the cab load is large.

Preferably, as shown in fig. 3 and 6, the top beam 2111 is a V-shaped bent beam, and its two free ends may be higher than the middle position, and the middle position is fixedly connected with the upright 2112. The two free ends of the V-shaped bent beam can be respectively and fixedly connected with the cab hood 1 so as to increase the connection span with the cab hood 1 and improve the stability. In addition, the top beam 2111 is provided with an oblong hole through which the column 2112 is bolted, so that the column 2112 can be adjusted in the front-rear, left-right direction with respect to the top beam 2111. In other embodiments, the top beam 2111 may be flat or wavy.

As shown in fig. 6, the connection beam group includes a second support beam 212, a third support beam 213, a fourth support beam 214, and a fifth support beam 215, which are integrally connected to each other.

As shown in fig. 3 and 6, the second support beam 212 gradually extends obliquely upward from front to rear. The upper end of the second support beam 212 is fixed to the rear end bent beam assembly 3, and specifically, the upper end of the second support beam 212 is bolted to the rear mounting seat 31 fixedly provided on the rear end bent beam assembly 3 through the front mounting seat 216 fixedly provided thereon. The lower end of the second support beam 212 is adapted to be coupled to the vehicle body underframe, and in particular, may be bolted to the vehicle body underframe via the base mount 217.

Because the end part of the underframe of the train body (namely, the front end of the head part of the train from the bent beam at the rear end of the cab) is of a cantilever structure, the end part of the underframe can be low in the running process of the train. In this embodiment, by the inclined arrangement of the second support beam 212 and the structural arrangement thereof, a pull force in an inclined direction can be applied to the end of the chassis to counteract the force of the chassis due to the cantilever structure, so as to avoid the occurrence of the "low head" phenomenon.

As shown in fig. 3 and 6, a third support beam 213 is disposed under the second support beam 212, and the third support beam 213 gradually extends obliquely upward from front to rear, and may be substantially parallel to the second support beam 212. The upper end of the third support beam 213 is fixed to the rear end bent beam assembly 3, and specifically, the upper end of the third support beam 213 is bolted to the rear mounting seat 31 fixedly provided on the rear end bent beam assembly 3 through the front mounting seat 216 fixedly provided thereon. The lower end of the third support beam 213 is adapted to be coupled to a vehicle body underframe, which may be bolted to the vehicle body underframe through a base mount 217. The bottom ends of the second support beam 212 and the third support beam 213 may be provided at a height adapted to the shape of the underframe of the vehicle body.

By the cooperation of the second support beam 212 and the third support beam 213, the connection strength between the rear end bent beam assembly 3 and the vehicle body underframe of the support beam assembly 21 can be improved, and in other embodiments, a greater number of support beams with both ends respectively connected to the rear end bent beam assembly 3 and the vehicle body underframe can be provided as required.

As shown in fig. 6, a fourth support beam 214 is fixed between the second support beam 212 and the third support beam 213. The first support beam 211 and the fourth support beam 214 are fixed to the upper and lower sides of the same position on the second support beam 212, respectively. Since the fourth support beam 214 is located at the position of the second support beam 212, at which the fourth support beam 214 is connected, directly below the position of the first support beam 211, the fourth support beam 214 can receive the longitudinal load from the first support beam 211, and the load is dispersed to the vehicle body bottom and rear end curved beam assembly 3 through the third support beam 213, so that the load-carrying capacity of the support beam assembly 21 can be improved.

As shown in fig. 6, a fifth support beam 215 is fixed between the second support beam 212 and the third support beam 213. The fifth support beam 215 is at an angle in the range of 88 ° to 92 ° to the second support beam 212, specifically an angle in the range of 88 ° to 92 °, preferably perpendicular.

The cab hood 1 has a front window coupling frame 11 thereon to fixedly couple the cab front window glass, and the second support beam 212 may be located at a rear side of the front window coupling frame 11. The fifth support beam 215 may be located at the rear lower side of the front window attachment frame 11, and mainly carries the longitudinal load from the front window glass of the cab, and transmits the force applied to the hood by the glass to the support beam assembly 21, thereby further improving the load carrying capacity of the entire cab.

Further, at least part of the components in the support beam assembly 21 are welded together to ensure structural strength, and specifically, all the components can be welded together, as shown in fig. 6, the first support beam 211, the second support beam 212, the third support beam 213, the fourth support beam 214 and the fifth support beam 215 are fixedly connected together by welding.

Of course, in other embodiments, the support beam assembly 21 may include only a portion of the support beams in the present embodiment, for example, only the second support beam 212 and the first support beam 211; still alternatively, the support beam assembly 21 may include a plurality of horizontally disposed sixth support beams and a plurality of vertically disposed seventh support beams connected as one body.

Further, as shown in fig. 4, the rear end bent beam assembly 3 includes an upper bent beam 32, and two rear posts 33 respectively fixed below both ends of the upper bent beam 32 to form an inverted U-shaped structure. At least part of the components in the rear end bent beam assembly 3 are welded, preferably all the components in the rear end bent beam assembly 3 are welded, so that the structural strength is ensured.

Further, at least two of the cab hood 1, the inner beam column component 2 and the rear end bent beam component 3 are connected by bolts. Preferably, the cab hood 1 and the inner beam and column assembly 2 are connected by bolts, and the cab hood 1 and the rear end beam and column assembly 2 and the rear end beam and column assembly 3 are connected by bolts. The application of the bolt connection can reduce the deformation caused by welding connection between the main structures. Specifically, during the assembly process, the components in the support beam assembly 21 are welded and connected, then the components are connected with the cab hood 1 through adjustable and detachable bolts, and finally the support beam assembly 21 is connected with the rear end bent beam assembly 3 through bolts.

The bolt connection between the cab hood 1 and the rear end bent beam assembly 3 can be realized through the connecting plate 35, the first T-shaped bolt 353 and the second T-shaped bolt 354.

As shown in fig. 11 to 14, the rear end bent beam assembly 3 is provided with a key hole 34 slidably coupled to the first T-bolt 353. A connecting seat 12 with a sliding groove 121 is fixedly arranged on the cab hood 1, and the sliding groove 121 is in sliding connection with a second T-shaped bolt 354. After adjusting the position of the first T-bolt 353 on the key hole 34 and the position of the second T-bolt 354 on the chute 121, the first T-bolt 353, the second T-bolt 354 may be secured to the same connection plate 35.

As shown in fig. 13 and 14, the key-shaped hole 34 is a hole having a larger dimension in a direction perpendicular to the extending direction than the rest at one end in the extending direction, the larger dimension being a large diameter portion 341 and the rest being a small diameter portion 342. The key-shaped aperture 34 extends in an up-down direction, with the top end being sized larger in the horizontal direction than the rest. The head of the first T-bolt 353 enters the rear end bent beam assembly 3 through the large diameter portion 341 of the key-shaped hole 34 and may be restrained from backing out at the small diameter portion 342 of the key-shaped hole 34, with the shaft extending out of the key-shaped hole 34 to connect with the connection plate 35.

As shown in fig. 12 and 14, the chute 121 may extend in the up-down direction. The head of the second T-bolt 354 is located in the runner 121 and is restrained from backing out, the stem extending out of the runner 121 to connect the connection plate 35.

Wherein, the connecting plate 35 is provided with a first connecting hole 351 and a second connecting hole 352, the first connecting hole 351 is used for the rod part of the first T-shaped bolt 353 to pass through, and the second connecting hole 352 is used for the rod part of the second T-shaped bolt 354 to pass through. The first connection hole 351 and the second connection hole 352 may be bar-shaped holes, specifically, oblong holes, specifically, the extending direction of the first connection hole 351 may be perpendicular to the extending direction of the key-shaped hole 34, and the extending direction of the second connection hole 352 may be perpendicular to the extending direction of the chute 121, so as to further improve the flexibility of adjusting the bolt connection position.

Because the connecting seat 12 needs to be additionally provided, a welding connection mode is specifically adopted, and the key-shaped hole 34 can be directly machined on the rear end bent beam component 3, compared with the implementation mode that the two sliding grooves 121 of the connecting seat 12 are respectively arranged on the cab hood 1 and the rear end bent beam component 3, the key-shaped hole 34 is formed by utilizing the structural characteristics of the rear end bent beam component 3, so that the welding quantity and welding deformation can be reduced, and the weight can be reduced.

For the bolt connection between the rear end bent beam assembly 3 and the supporting beam assembly 21, specifically, the supporting beam assembly 21 is fixedly provided with a front mounting seat 216, specifically, the front mounting seat can be welded, and the rear end bent beam assembly 3 is fixedly provided with a rear mounting seat 31, specifically, the rear mounting seat can be welded. The front mount 216 and the rear mount 31 are fixed by bolts.

For the bolt connection between the inner beam-column assembly 2 and the cab hood 1, an upper mounting seat 219 can be fixedly arranged on a part of the supporting beam of the inner beam-column assembly 2 so as to be connected with the cab hood 1 through bolts.

The cab structure provided by the invention adopts various connection modes such as common bolt connection, combined connection of the sliding chute 121 and the T-shaped bolt, welding and the like for combined application. The cab hood 1, the inner beam column component 2 and the rear end bent beam component 3 are connected by adopting adjustable and detachable bolts; the internal structure of the internal beam column component 2 and the rear end bent beam component 3 are connected reliably by adopting welding, the internal beam column component 2 comprises supporting beams 21 on the left side and the right side of the split type, the supporting beams are respectively connected with the cab hood 1, the adjusting space is sufficient, and the internal beam column component 2 is subjected to position and structural design according to the load path of the cab in the current running working condition of the vehicle, so that the bearing capacity of the cab framework is improved.

The cab structure can decompose the integral beam column into left and right independent two parts under the condition of guaranteeing the reliable skeleton strength, the structure is simplified, the front end of the cab has no skeleton, the space occupation is less, the cab is not influenced by appearance modeling, the cab structure is applicable to the change of various cab curved surface modeling, the installation and adjustment are convenient, the weight is reduced, the light weight is realized, the main structure adopts the bolt connection, the detachable replacement is realized, the connecting plate 35 with the oblong hole is adopted between the main structure to be matched with the chute 121 structure and the 34 parts with the key-shaped holes, the T-shaped bolt connection is used, the installation and the adjustment can be carried out in a plurality of directions, the beam column position and the structural design can be carried out according to the loaded path of the cab in the current running working condition, the bearing capacity of the cab skeleton is improved, and the cab structure has the advantages of strong bearing capacity, light weight, detachability and adjustability.

In addition to the cab structure, the invention also provides a railway vehicle which comprises the cab structure, and the cab structure can be specifically the cab structure provided in any embodiment, and the beneficial effects can be correspondingly referred to the embodiments. The structure of the other parts of the rail vehicle is referred to in the prior art, and will not be described herein.

It will be understood that when an element is referred to as being "fixed" to another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "a plurality", "a plurality of groups" is two or more.

The terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like refer to an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not denote or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the invention. Furthermore, the terms "first," "second," and "third" 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.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.

The cab structure and the railway vehicle provided by the invention are described in detail above. The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.

Claims (10)

1. The cab structure is characterized by comprising a cab hood (1), an inner beam column component (2) and a rear end bent beam component (3); the rear end curved beam assembly (3) is fixed on the rear side of the cab hood (1), the inner beam column assembly (2) comprises two support beam assemblies (21) which are arranged in a split mode, the two support beam assemblies (21) are arranged in the cab hood (1) in parallel and are respectively fixed on two opposite side walls of the cab hood (1), and the rear end of the support beam assemblies (21) is fixed on the rear end curved beam assembly (3).

2. The cab structure according to claim 1, wherein the support beam assembly (21) further comprises a first support beam (211) and a set of connection beams; the first support beam (211) comprises a top beam (2111) and a vertical column (2112) fixed below the middle part of the top beam (2111) so as to form a T-shaped beam, the top beam (2111) is fixed on the cab hood (1), the bottom end of the vertical column (2112) is fixed on the connecting beam group, and the connecting beam group is fixedly connected with the rear end bent beam component (3).

3. The cab structure according to claim 2, wherein the connection beam group includes a second support beam (212), a third support beam (213) provided below the second support beam (212), and a fourth support beam (214) fixed between the second support beam (212) and the third support beam (213), rear ends of the second support beam (212) and the third support beam (213) being fixed to the rear end bent beam assembly (3); the first support beam (211) and the fourth support beam (214) are respectively fixed on the upper side and the lower side of the same position on the second support beam (212).

4. The cab structure according to claim 1, wherein the support beam assembly (21) includes a second support beam (212), the second support beam (212) extends gradually upward from front to rear, an upper end of the second support beam (212) is fixed to the rear end bent beam assembly (3), and a lower end is for connection to a vehicle body underframe.

5. A cab structure according to claim 3, wherein the support beam assembly (21) further comprises a third support beam (213) disposed below the second support beam (212), the third support beam (213) extending gradually upward from front to rear, the upper end of the third support beam (213) being fixed to the rear end bent beam assembly (3) and the lower end being adapted to be connected to a vehicle body chassis.

6. The cab structure according to claim 4, wherein the support beam assembly (21) further includes a fifth support beam (215) secured between the second support beam (212) and the third support beam (213), the fifth support beam (215) having an angle with the second support beam (212) ranging between 88 ° and 92 °.

7. Cab structure according to any one of claims 1 to 6, characterized in that at least part of the components of the support beam assembly (21) are welded and/or at least part of the components of the rear end bent beam assembly (3) are welded and connected.

8. The cab structure according to any one of claims 1 to 6, wherein at least two of the cab hood (1), the inner beam-column assembly (2), and the rear end bent beam assembly (3) are bolted.

9. The cab structure of any one of claims 1-6, further comprising a connection plate (35), a first T-bolt (353), and a second T-bolt (354); a key-shaped hole (34) which is in sliding connection with the first T-shaped bolt (353) is formed in the rear end bent beam assembly (3), a connecting seat (12) with a sliding groove (121) is fixedly arranged on the cab hood (1), and the sliding groove (121) is in sliding connection with the second T-shaped bolt (354); after adjusting the positions of the first T-shaped bolt (353) and the second T-shaped bolt (354) on the key-shaped hole (34) and the chute (121), the first T-shaped bolt (353) and the second T-shaped bolt (354) can be fixed on the same connecting plate (35).

10. A rail vehicle comprising a cab structure according to any one of claims 1 to 9.