CN112265557B

CN112265557B - Seat framework, carriage and rail vehicle

Info

Publication number: CN112265557B
Application number: CN202011153250.0A
Authority: CN
Inventors: 王爱娇; 吴悠; 徐晓刚; 孟凡帅; 林琳; 杜明轩
Original assignee: CRRC Tangshan Co Ltd
Current assignee: CRRC Tangshan Co Ltd
Priority date: 2020-10-26
Filing date: 2020-10-26
Publication date: 2022-07-26
Anticipated expiration: 2040-10-26
Also published as: CN112265557A; WO2022088227A1

Abstract

The embodiment of the application provides a seat frame, carriage and rail vehicle. The seat frame is used for being connected with a side wall of a carriage of the rail vehicle, the seat frame is used for being arranged in the carriage of the rail vehicle along the length direction of the rail vehicle, a plurality of seat mounting holes used for being connected with seats are formed in the seat frame, the side wall comprises a first plane, a protruding portion and a second plane, the first plane, the protruding portion and the second plane are sequentially arranged along the length direction of the rail vehicle, the protruding portion protrudes towards the inner side of the carriage, and the seat frame is used for being connected with the protruding portion. According to the embodiment of the application, the seat framework is connected to the protruding portions on the side walls, so that certain gaps are formed between the seat framework and the first planes and the second planes of the side walls to avoid the hidden vehicle doors, the problem of connection between the seat framework and the side walls in the related art is solved, and interference between the seat framework and the vehicle doors is avoided.

Description

Seat framework, carriage and rail vehicle

Technical Field

The application relates to a rail vehicle manufacturing technology, in particular to a seat framework, a carriage and a rail vehicle.

Background

With the development of rail transit technology, rail vehicles gradually become the first choice of transportation for people to go out. In the scheme of the related technology, on the urban rail vehicle in the middle and short distance, in order to improve the passenger carrying capacity of the carriage, two rows of opposite seats are generally arranged on two sides in the width direction of the vehicle in the carriage, a seat framework is connected with a side wall and an underframe of the carriage, and a vehicle door is arranged on at least one side of the seat in the length direction of the carriage, so that passengers can get on or off the vehicle conveniently.

However, with the solutions in the related art, when the vehicle door adopts a concealed vehicle door (i.e., the vehicle door is opened toward the inside of the vehicle compartment), the seat frame cannot be directly connected with the side wall of the vehicle compartment, otherwise the seat frame interferes with the vehicle door, thereby affecting the normal opening of the vehicle door.

Disclosure of Invention

The embodiment of the application provides a seat framework, a carriage and a rail vehicle, and the seat framework, the carriage and the rail vehicle are mainly used for solving the problem that the seat framework cannot be directly connected with a side wall of the carriage when a concealed vehicle door is adopted in a vehicle door in the related technology.

According to the first aspect of the embodiment of the application, a seat frame is provided for being connected with the side wall of rail vehicle carriage, the seat frame is used for following rail vehicle's length direction sets up in rail vehicle's the carriage, be equipped with a plurality of seat mounting holes that are used for connecting the seat on the seat frame, the side wall includes the edge first plane, bellying and the second plane that rail vehicle's length direction set gradually, the bellying orientation the inboard arch in carriage, the seat frame be used for with the bellying is connected.

Optionally, the seat frame is provided with a plurality of first fixing holes for connecting with the side wall, and the plurality of first fixing holes are uniformly distributed in the middle of the seat frame.

Optionally, the seat frame is further provided with a plurality of chair legs, and the chair legs are used for being fixedly connected with the chassis of the carriage.

As above, optionally, the seat frame includes an upper frame and a lower frame, the lower frame is used for being connected with the bottom frame, the upper frame is located on one side of the bottom frame deviating from the bottom frame, the upper frame is used for being connected with the side wall, and the upper frame and the lower frame are welded and fixed.

As above, optionally, the upper frame includes an upper frame body, an upper folded edge and a lower folded edge, the upper folded edge is disposed on one side of the upper frame body, which is away from the lower frame, the lower folded edge is disposed on one side of the upper frame body, which faces the lower frame, the upper folded edge and the lower folded edge are integrally formed with the upper frame body, and the upper folded edge and the lower folded edge are both bent towards the side wall.

Optionally, a plurality of welding reinforcing ribs are arranged between the upper frame and the lower frame, and the welding reinforcing ribs connect one side surface of the lower frame and the surface of the lower folded edge facing the lower frame.

Optionally, the upper frame is provided with a plurality of first weight-reducing portions, and the vertical cross section of each first weight-reducing portion is circular or square.

The seat frame as described above, optionally, the first weight-reducing portion includes a first weight-reducing square hole, a second weight-reducing square hole and a third weight-reducing square hole arranged in sequence along the length direction of the rail vehicle, the second weight-reducing square hole is arranged at a portion of the upper frame corresponding to the protruding portion, and the plurality of first fixing holes are symmetrically distributed at upper and lower sides of the second weight-reducing square hole.

As above the seat frame, optionally, still be equipped with a plurality of tapping boards on going up the skeleton, the tapping board is used for connecting seat and side wall, the tapping board protrusion in go up the skeleton body setting, the protrusion direction of tapping board with the direction of buckling of going up the hem is the same, and is a plurality of the tapping board symmetric distribution is in go up the upper and lower both sides of skeleton body.

Optionally, the surface of the upper frame facing the side wall is further provided with a plurality of reinforcing ribs.

Optionally, the upper folded edge is provided with a plurality of second fixing holes for connecting the side walls.

Optionally, a plurality of third fixing holes for connecting a partition wall are further provided on the upper folded edge, and the third fixing holes are located at two ends of the upper folded edge along the length direction of the rail vehicle.

As above seat frame, optionally, the lower skeleton includes the lower skeleton body, the lower skeleton body is followed rail vehicle length direction's both ends are equipped with the chair leg, the chair leg includes interconnect's first hem, second hem and third hem, wherein, first hem with the third hem limit is parallel, first hem is connected perpendicularly on the skeleton body down, the second hem with the lower skeleton body is parallel, the second hem is connected first hem and third hem, be equipped with on the third hem and be used for connecting the fourth fixed orifices of chassis.

Optionally, the lower frame body is provided with a plurality of heater fixing structures for connecting the heater, and each heater fixing structure includes a plurality of heater fixing holes.

The seat frame as described above, optionally, a second weight-reduction portion is provided between two adjacent heater fixing structures.

Optionally, the lower frame further comprises a reinforcing plate, and the reinforcing plate connects a side surface of the lower frame body along the length direction of the rail vehicle and a corresponding side surface of the seat leg along the length direction of the rail vehicle.

According to a second aspect of the embodiment of the application, a carriage is provided, which comprises a bottom frame and side walls arranged on two sides of the bottom frame, wherein the side walls are provided with vehicle doors, the vehicle doors are opened towards the inner side of the carriage, the side walls comprise a first plane, a protruding part and a second plane, the first plane, the protruding part and the second plane are sequentially arranged along the length direction of the carriage, and the protruding part protrudes towards the inner side of the carriage; the car is characterized in that the car compartment is also internally provided with the seat framework and a plurality of seats, the seats are connected and fixed on the seat framework, the seat framework is connected with the protruding part, a first gap is formed between the seat framework and the first plane, a second gap is formed between the seat framework and the second plane, and the first gap and the second gap are used for avoiding the car door.

The car as described above, optionally the car is a car of a single-deck railway vehicle or a middle deck car of a double-deck railway vehicle.

The carriage as described above, optionally, further includes partition walls, the partition walls are disposed on two sides of the seat frame along the length direction of the carriage, the partition walls are perpendicular to the side walls, and the partition walls are fixedly connected with the seat frame.

According to a third aspect of embodiments of the present application, there is provided a rail vehicle comprising a plurality of end-to-end cars, at least one of the cars being as described above.

By adopting the seat framework, the carriage and the rail vehicle, the seat framework is used for being connected with the side wall of the carriage of the rail vehicle, the seat framework is arranged in the carriage of the rail vehicle along the length direction of the rail vehicle, the seat framework is provided with a plurality of seat mounting holes used for being connected with seats, the side wall comprises a first plane, a protruding portion and a second plane which are sequentially arranged along the length direction of the rail vehicle, the protruding portion protrudes towards the inner side of the carriage, and the seat framework is used for being connected with the protruding portion. This application embodiment is through on the bellying with seat frame connection on the side wall to make to be formed with certain clearance in order to dodge interior concealed door between the first plane of seat frame and side wall and the second plane, solved the connection problem of seat frame and side wall among the correlation technique and can not produce with the door and interfere.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 illustrates a simplified structural diagram of a seat frame from a first perspective according to an embodiment of the present application;

FIG. 2 is a schematic illustration of a seat frame provided in accordance with an embodiment of the present application from a second perspective;

FIG. 3 illustrates a front view of a seat frame provided by an embodiment of the present application;

shown in fig. 4 is a cross-sectional view a-a of fig. 3;

FIG. 5 is a schematic illustration of a portion of a vehicle cabin provided in accordance with an embodiment of the present application;

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

shown in fig. 7 is a cross-sectional view C-C of fig. 5.

Reference numerals are as follows:

10-a seat frame; 101-seat mounting holes; 102-a first fixation hole;

11-upper skeleton; 111-upper skeleton body; 112-folding the upper edge; 113-folding the lower edge; 114-reinforcing ribs; 1111-a first weight-reducing square hole; 1112-a second weight-reducing square hole; 1113-a third weight-reducing square hole; 1114-tapping plate; 1121 — second fixing hole; 1122-a third fixing hole;

12-lower skeleton; 121-lower skeleton body; 1211-heater fixing hole; 122-chair legs; 1221-first flanging; 1222-a second hem; 1223-third folding; 123-a second weight-reducing portion; 124-a reinforcing plate;

13-welding reinforcing ribs;

20-side walls; 21-a first plane; 22-a second plane; 23-a boss;

30-a chassis;

40-a vehicle door;

50-a seat;

60-partition wall.

Detailed Description

In order to make the technical solutions and advantages in the embodiments of the present application more clearly understood, the following description of the exemplary embodiments of the present application with reference to the accompanying drawings is made in further detail, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and are not exhaustive of all the embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

Example one

FIG. 1 illustrates a schematic view of a seat frame provided in accordance with an embodiment of the present application from a first perspective; FIG. 2 is a schematic illustration of a seat frame from a second perspective according to an exemplary embodiment of the present disclosure; FIG. 3 illustrates a front view of a seat frame provided by an embodiment of the present application; shown in fig. 4 is a cross-sectional view a-a of fig. 3; FIG. 5 is a schematic illustration of a portion of a vehicle cabin provided in accordance with an embodiment of the present application; shown in FIG. 6 is a cross-sectional view B-B of FIG. 5; shown in FIG. 7 is a cross-sectional view C-C of FIG. 5; referring to fig. 1 to 7, fig. 1 to 4 show a structure of a seat frame 10 of the present embodiment, and fig. 5 to 7 show a specific use scenario of the seat frame 10 of the present embodiment in a vehicle compartment.

The embodiment provides a seat frame 10, which is used for being connected with a side wall 20 of a railway vehicle carriage, the seat frame 10 is used for being arranged in the railway vehicle carriage along the length direction of the railway vehicle, a plurality of seat mounting holes 101 for connecting seats are arranged on the seat frame 10, the side wall 20 comprises a first plane 21, a protruding part 23 and a second plane 22 which are sequentially arranged along the length direction of the railway vehicle, the protruding part 23 protrudes towards the inner side of the carriage, and the seat frame 10 is used for being connected with the protruding part 23.

Specifically, in the present embodiment, the seat frame 10 is made of a metal material as a whole so as to meet the requirement of strength, the seat frame 10 is substantially plate-shaped, and the specific number and the installation position of the seat installation holes 101 may be determined according to parameters such as the width of the seat to be installed, which is not limited in the present embodiment. The seat frame 10 and the convex part 23 can be connected and fixed by adopting a common connecting mode in the prior art, such as welding, bolt connection and the like; by connecting the seat frame 10 to the protruding portion 23 on the side wall 20, a certain gap is formed between the seat frame 10 and the first plane 21 and the second plane 22 of the side wall 20 to avoid the concealed vehicle door, so that the problem of connection between the seat frame 10 and the side wall 20 in the related art is solved, and interference with the vehicle door is avoided.

The seat frame 10 of this embodiment is provided with a plurality of first fixed orifices 102 that are used for being connected with the side wall 20, and a plurality of first fixed orifices 102 evenly distributed are at the middle part of seat frame 10, and the seat frame 10 passes through first fixed orifices 102 through fastening bolt and connects the back and fix in bellying 23 to the realization is fixed with being connected of side wall 20.

The seat frame 10 of the present embodiment is further provided with a plurality of legs 122, and the legs 122 are used for being fixedly connected with the underframe 30 of the carriage. The seat frame 10 of the present embodiment connects the boss 23 on the side wall of the vehicle compartment and the underframe 30 of the vehicle compartment at the same time, thereby improving the stability of the connection.

Optionally, the seat frame 10 of this embodiment includes an upper frame 11 and a lower frame 12, where the lower frame 12 is configured to be connected to the base frame 30, the upper frame 11 is located on a side of the lower frame 12 away from the base frame 30, the upper frame 11 is configured to be connected to the side wall 20, and the upper frame 11 and the lower frame 12 are welded and fixed. This embodiment is through adopting upper frame 11 and lower frame 12 welded connection's mode to constitute to the processing preparation of seat frame 10 of being convenient for can weld the two after finishing upper frame 11 and lower frame 12 simultaneously, improves the operating efficiency. When the thickness in the carriage or the molding process of selected materials allows, the upper framework and the lower framework can also adopt an integrated Z-shaped bending mode and the like.

Specifically, the upper frame 11 of this embodiment includes an upper frame body 111, an upper folding edge 112 and a lower folding edge 113, the upper folding edge 112 is disposed on one side of the upper frame body 111 departing from the lower frame 12, the lower folding edge 113 is disposed on one side of the upper frame body 111 facing the lower frame 12, the upper folding edge 112 and the lower folding edge 113 are integrally formed with the upper frame body 111, and the upper folding edge 112 and the lower folding edge 113 are both bent towards the side wall 20. The overall strength of the upper frame 11 can be improved by providing the upper and lower folded

edges

112 and 113, so that the upper frame 11 is less likely to be deformed.

Further, a plurality of welding ribs 13 are provided between the upper frame 11 and the lower frame 12 in the present embodiment, and the welding ribs 13 connect one side surface of the lower frame 12 and a surface of the lower flange 113 facing the lower frame 12. The welding connection strength between the upper framework 11 and the lower framework 12 can be improved by arranging the welding reinforcing ribs 13, so that the upper framework and the lower framework are not easy to separate.

In order to reduce the weight of the seat frame 10, in the embodiment, a plurality of first weight reducing portions are provided on the upper frame 11, the vertical cross section of each first weight reducing portion may be circular, square or other regular or irregular shapes, and the specific installation area of the first weight reducing portions may also be selected as required.

Optionally, in the present embodiment, the first weight-reducing portion includes a first weight-reducing square hole 1111, a second weight-reducing square hole 1112, and a third weight-reducing square hole 1113, which are sequentially arranged along the length direction of the rail vehicle, wherein the second weight-reducing square hole 1112 is arranged at a portion of the upper frame 11 corresponding to the protrusion 23, and the plurality of first fixing holes 102 are symmetrically distributed at the upper and lower sides of the second weight-reducing square hole 1112. The weight and the strength of each part on the upper framework 11 are basically kept consistent by arranging the first weight-reducing square hole 1111, the second weight-reducing square hole 1112 and the third weight-reducing square hole 1113, and the plurality of first fixing holes 102 are arranged on the upper side and the lower side of the second weight-reducing square hole 1112, so that the uniform dispersion of the pretightening force on each part of the joint can be ensured, and the excessive local pretightening force can be prevented.

In this embodiment, the upper frame 11 is further provided with a plurality of tapping plates 1114, and the tapping plates 1114 are used for connecting the seat and the side wall. For weight optimization, the seat frame plate can be selected to be 3-4 mm thick, and the tapping plate 1114 can be suitable for intensity and needs to select thicker metal sheet for use. The protrusion of tapping plate 1114 is in the setting of last skeleton body 111, and the direction of protrusion of tapping plate 1114 is the same with the direction of buckling of last hem 112 to improve this intensity of going out, be convenient for use connecting pieces such as bolts and be connected fixedly with the side wall of automobile body. Optionally, the plurality of tapping plates 1114 are symmetrically distributed on the upper and lower sides of the upper frame body 111.

Further, the surface of the upper frame 11 facing the side wall 20 of the present embodiment is further provided with a plurality of reinforcing ribs 114, so as to improve the overall strength of the upper frame 11. The specific location and number of the ribs 114 can be selected as desired.

In addition, a plurality of second fixing holes 1121 for connecting the side walls 20 are formed in the upper folding edge 112 of the present embodiment, and the second fixing holes 1121 may be circular holes or long holes, which can be specifically selected according to the structure of the connecting member. The second fixing holes 1121 are used for connecting and fixing with the side walls in the vertical direction, that is, the seat frame 10 of the embodiment may be embedded in the lower ends of the protrusions 23.

Furthermore, the upper folding edge 112 of the present embodiment is further provided with a plurality of third fixing holes 1122 for connecting the partition wall, the third fixing holes 1122 are located at two ends of the upper folding edge 112 along the length direction of the rail vehicle, and the third fixing holes 1122 and the partition wall can be connected and fixed by using bolts, connecting angle irons and other parts.

Optionally, the lower frame 12 of this embodiment includes a lower frame body 121, the lower frame body 121 is provided with a chair leg 122 at two ends along the length direction of the rail vehicle, the chair leg 122 includes a first folding edge 1221, a second folding edge 1222 and a third folding edge 1223 connected to each other, and the first folding edge 1221, the second folding edge 1222 and the third folding edge 1223 are all provided for avoiding a door slide with a wider hidden door lower portion. The first folding edge 1221 is parallel to the third folding edge 1223, the first folding edge 1221 is vertically connected to the lower framework body 121, the second folding edge 1222 is parallel to the lower framework body 121, the second folding edge 1222 is connected to the first folding edge 1221 and the third folding edge 1223, and a fourth fixing hole for connecting the bottom frame 30 is formed in the third folding edge 1223. In this embodiment, the chair legs 122 are disposed at two ends of the lower frame body 121 to reduce the contact area between the lower frame 12 and the bottom frame on the premise of ensuring stable support, thereby facilitating the reduction of the weight of the lower frame 12. The connecting strength of the chair leg 122 can be improved by arranging the chair leg 122 into a structure of the first folding edge 1221, the second folding edge 1222 and the third folding edge 1223 which are connected with each other, so that the chair leg 122 meets the requirement of connection.

Further, the lower frame body 121 of the embodiment is provided with a plurality of heater fixing structures for connecting the heaters, each heater fixing structure includes a plurality of heater fixing holes 1211, and the heater is integrated on the lower frame 12, so that the arrangement of a corresponding structure on the side wall of the carriage can be avoided, and the processing and manufacturing of the vehicle are facilitated.

In the present embodiment, a second weight-reducing portion 123 is provided between two adjacent heater fixing structures to reduce the weight of the seat frame 10. The second weight-reducing portion 123 may also be provided between the leg 122 and the adjacent heater fixing structure.

The lower frame 12 of the present embodiment further includes a reinforcement plate 124, and the reinforcement plate 124 connects the side of the lower frame body 121 along the length direction of the rail vehicle and the side of the corresponding leg 122 along the length direction of the rail vehicle, so as to improve the connection strength between the lower frame body 121 and the leg 122. The stiffener 124 is also provided with through holes to facilitate routing of the heater and reduce the weight of the stiffener.

As can be seen from the above description, the seat frame 10 of the present embodiment not only can solve the problem of connection between the seat frame 10 and the side wall 20 when the concealed door is used, so that the opening of the concealed door is not affected by the seat frame 10, but also the seat frame of the present embodiment integrates the installation points of the seat, the heater, the partition wall, and the like, thereby solving the installation requirements of the above components.

Example two

FIG. 5 is a partial block diagram of a vehicle cabin provided by an embodiment of the present application; shown in FIG. 6 is a cross-sectional view B-B of FIG. 5; shown in FIG. 7 is a cross-sectional view C-C of FIG. 5; please refer to fig. 5-7.

The embodiment provides a carriage, which comprises an underframe 30 and side walls 20 arranged on two sides of the underframe 30, wherein vehicle doors 40 are arranged on the side walls 20, and the vehicle doors 40 are opened towards the inner side of the carriage. The sidewall 20 includes a first plane 21, a protruding portion 23, and a second plane 22 arranged in this order in the vehicle compartment length direction, the protruding portion 23 protrudes toward the inside of the vehicle compartment, and the protruding portion 23 is arranged between the first plane 21 and the second plane 22. The vehicle compartment is further provided with a seat frame 10 and a plurality of seats 50 as described in the first embodiment, and the plurality of seats 50 are connected and fixed to the seat frame 10. The protruding portion 23 may be provided with a window, the seat frame 10 is connected with the protruding portion 23 and located below the window, after connection and fixation, a first gap is formed between the seat frame 10 and the first plane 21, a second gap is formed between the seat frame 10 and the second plane 22, and the first gap and the second gap are used for avoiding the vehicle door 40.

In the vehicle compartment of the embodiment, the seat frame 10 is connected to the protruding portion 23 on the side wall 20, so that a certain gap is formed between the seat frame 10 and the first plane 21 and the second plane 22 of the side wall 20 to avoid the concealed vehicle door 40, and the vehicle door 40 can slide in the vehicle compartment and enter the gap between the seat frame 10 and the first plane 21 and the second plane 22 of the side wall 20, so that the problem of connection between the seat frame 10 and the side wall 20 in the related art is solved, and interference with the vehicle door 40 is avoided.

Alternatively, the car of the present embodiment may be a car of a single-deck railway vehicle or a middle deck car of a double-deck railway vehicle.

Further, the present embodiment further includes partition walls 60, and the partition walls 60 are disposed at both sides of the seat frame 10 in the length direction of the vehicle compartment to protect passengers and improve the safety of riding. The partition wall 60 is perpendicular to the side wall 20, and the partition wall 60 is fixedly connected to the seat frame 10, that is, the seat frame 10 of the embodiment is further integrated with a mounting hole of the partition wall 60, so as to improve the mounting efficiency.

EXAMPLE III

The embodiment provides a railway vehicle, which comprises a plurality of end-to-end carriages, wherein at least one of the carriages adopts the carriage in the second embodiment.

Specifically, because the rail vehicle of the embodiment adopts the carriage of the second embodiment, a certain gap is formed between the seat frame and the side wall to avoid the concealed vehicle door, the problem of connection between the seat frame and the side wall in the related art is solved, and interference with the vehicle door is avoided.

In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered limiting of the present application.

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

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and encompass, for example, both fixed and removable connections or integral parts thereof; can be mechanically connected, electrically connected or can communicate with each other; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

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

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A seat framework is used for being connected with a side wall of a railway vehicle carriage and is characterized in that the seat framework is arranged in the railway vehicle carriage along the length direction of the railway vehicle, a plurality of seat mounting holes used for being connected with seats are arranged on the seat framework, the side wall comprises a first plane, a protruding part and a second plane which are sequentially arranged along the length direction of the railway vehicle, the protruding part protrudes towards the inner side of the carriage, and the seat framework is used for being connected with the protruding part,

the seat framework is provided with a plurality of first fixing holes for connecting with the side walls, the first fixing holes are uniformly distributed in the middle of the seat framework,

the seat framework is also provided with a plurality of chair legs which are used for being fixedly connected with the chassis of the carriage,

the seat framework comprises an upper framework and a lower framework, the lower framework is used for being connected with the underframe, the upper framework is positioned at one side of the lower framework, which is far away from the underframe, the upper framework is used for being connected with the side wall, the upper framework and the lower framework are welded and fixed,

the lower framework comprises a lower framework body, the lower framework body is arranged at two ends of the length direction of the rail vehicle, the chair legs comprise a first folding edge, a second folding edge and a third folding edge which are connected with each other, the first folding edge is parallel to the third folding edge, the first folding edge is perpendicularly connected to the lower framework body, the second folding edge is parallel to the lower framework body, the second folding edge is connected to the first folding edge and the third folding edge, and the third folding edge is provided with a fourth fixing hole for connecting the bottom frame.

2. The seat frame of claim 1, wherein the upper frame comprises an upper frame body, an upper folded edge and a lower folded edge, the upper folded edge is arranged on one side of the upper frame body, which faces away from the lower frame, the lower folded edge is arranged on one side of the upper frame body, which faces the lower frame, the upper folded edge and the lower folded edge are integrally formed with the upper frame body, and the upper folded edge and the lower folded edge are both bent towards the side wall.

3. The seat frame of claim 2, wherein a plurality of weld stiffeners are provided between the upper frame and the lower frame, the weld stiffeners connecting one side of the lower frame and a surface of the lower flange facing the lower frame.

4. The seat frame of claim 2, wherein the upper frame is provided with a plurality of first weight-reducing portions, and the vertical cross section of each first weight-reducing portion is circular or square.

5. The seat frame of claim 4, wherein the first weight-reduction portion comprises a first weight-reduction square hole, a second weight-reduction square hole and a third weight-reduction square hole which are sequentially arranged along the length direction of the railway vehicle, the second weight-reduction square hole is arranged at a part of the upper frame corresponding to the protruding portion, and the first fixing holes are symmetrically distributed at the upper side and the lower side of the second weight-reduction square hole.

6. The seat framework of claim 5, wherein the upper framework is further provided with a plurality of tapping plates, the tapping plates are used for connecting the seat and the side wall, the tapping plates protrude out of the upper framework body, the protruding direction of the tapping plates is the same as the bending direction of the upper folded edge, and the tapping plates are distributed on the upper side and the lower side of the upper framework body.

7. The seat frame of claim 6, wherein the surface of the upper frame facing the side wall is further provided with a plurality of ribs.

8. The seat frame of claim 2, wherein the upper folded edge is provided with a plurality of second fixing holes for connecting the side walls.

9. The seat frame of claim 8, wherein a plurality of third fixing holes for connecting a partition wall are further formed in the upper flange, and the third fixing holes are formed at both ends of the upper flange in the length direction of the rail vehicle.

10. The seat frame of claim 1, wherein the lower frame body is provided with a plurality of heater fixing structures for connecting a heater, each of the heater fixing structures including a plurality of heater fixing holes.

11. The seat frame of claim 10, wherein a second weight-reducing portion is provided between two adjacent heater securing structures.

12. The seat frame of claim 1, wherein the lower frame further comprises a reinforcement plate connecting a side of the lower frame body along the length of the rail vehicle to a corresponding side of the seat leg along the length of the rail vehicle.

13. A carriage is characterized by comprising a chassis and side walls arranged on two sides of the chassis, wherein vehicle doors are arranged on the side walls, the vehicle doors face the inner side of the carriage to be opened, the side walls comprise a first plane, a protruding portion and a second plane, the first plane, the protruding portion and the second plane are sequentially arranged in the length direction of the carriage, the protruding portion faces the inner side of the carriage to be protruding, a seat framework and a plurality of seats according to any one of claims 1 to 12 are further arranged in the carriage, the seats are connected and fixed on the seat framework, the seat framework is connected with the protruding portion, a first gap is formed between the seat framework and the first plane, a second gap is formed between the seat framework and the second plane, and the first gap and the second gap are used for avoiding the vehicle doors.

14. The car of claim 13, wherein the car is a single-deck rail car or a mid-deck car of a double-deck rail car.

15. The compartment as claimed in claim 13, further comprising partition walls disposed on both sides of the seat frame in the lengthwise direction of the compartment, the partition walls being disposed perpendicular to the side walls, the partition walls being fixedly connected to the seat frame.

16. A rail vehicle comprising a plurality of end-to-end cars, at least one of said cars employing a car according to any one of claims 14 to 15.