CN216443603U

CN216443603U - Rail vehicle and boundary beam of front end chassis of rail vehicle

Info

Publication number: CN216443603U
Application number: CN202220013834.6U
Authority: CN
Inventors: 张泽云; 田洪雷; 张成功; 江斌
Original assignee: CRRC Qingdao Sifang Co Ltd
Current assignee: CRRC Qingdao Sifang Co Ltd
Priority date: 2022-01-04
Filing date: 2022-01-04
Publication date: 2022-05-06
Anticipated expiration: 2032-01-04

Abstract

The utility model relates to a railway vehicle and a boundary beam of a front end underframe of the railway vehicle, wherein the boundary beam of the front end underframe comprises an outer boundary beam and an inner boundary beam, and the outer boundary beam and the inner boundary beam are both carbon fiber composite beams; the outer edge beam comprises a first section and second sections positioned at two ends of the first section, and the sectional area of the first section is larger than that of the second section; the roof of outer boundary beam is connected with the connecting portion on rail vehicle's floor, and the lateral wall of outer boundary beam is connected between the diapire through interior boundary beam and floor. The rigidity of the boundary beam of the front end chassis of the railway vehicle can be ensured on the basis of realizing the aim of light weight.

Description

Rail vehicle and boundary beam of front end chassis of rail vehicle

Technical Field

The utility model relates to the technical field of railway vehicles, in particular to a railway vehicle and a boundary beam of a front end chassis of the railway vehicle.

Background

With the continuous improvement of the rail transit speed, a series of problems such as large resistance, high energy consumption and the like are brought to the rail vehicle, and the rail vehicle needs to meet the requirement of light weight to solve the problems. The conventional vehicle body structure of a metal material has a limited rise space in solving the above-described problems, and the structure of a carbon fiber composite material can effectively achieve the object of weight reduction.

The rail vehicle comprises a vehicle body, the vehicle body comprises a front end underframe, and a boundary beam of the front end underframe is used as a main vehicle body bearing part of the rail vehicle and needs to have good mechanical property on the basis of light weight. However, the existing underframe boundary beam made of carbon fiber composite material is of a pultrusion integrated structure and is weak in rigidity.

How to ensure the rigidity of the side beam of the underframe on the basis of realizing the aim of light weight is a technical problem to be solved by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a railway vehicle and a side beam of a front end underframe of the railway vehicle, which can ensure the rigidity of the side beam of the front end underframe of the railway vehicle on the basis of realizing the aim of light weight.

In order to solve the technical problem, the utility model provides a boundary beam of a front end chassis of a railway vehicle, which comprises an outer boundary beam and an inner boundary beam, wherein the outer boundary beam and the inner boundary beam are both made of carbon fiber composite material beams; the outer edge beam comprises a first section and second sections positioned at two ends of the first section, and the sectional area of the first section is larger than that of the second section; the roof of outer boundary beam is connected with the connecting portion on rail vehicle's floor, the lateral wall of outer boundary beam pass through interior boundary beam with be connected between the diapire on floor.

Front end chassis boundary beam is the carbon-fibre composite roof beam, in order to do benefit to and realize the lightweight target, set up the outside roof beam into variable cross section structure simultaneously, can guarantee the overall structure rigidity of this boundary beam, through the lug connection between outside roof beam and the floor, and connect through interior boundary beam is indirect between outside roof beam and the floor, in order to guarantee the structural strength of junction between boundary beam and the floor, and then when realizing effectively subtracting the purpose of heavy, guarantee overall structure intensity, provide for the better front end chassis structure of design and dodge the space.

Optionally, the widths of the first section and the second section are the same, the top wall of the first section is aligned with the top wall of the second section, and the bottom wall of the first section is provided with a protrusion protruding downward relative to the bottom wall of the second section, so that the sectional area of the first section is larger than that of the second section.

Optionally, an over-tangent plane is provided between the end of the projection and the second section.

Optionally, the cross section of the first section is in a herringbone structure, and the cross section of the second section is in a herringbone structure.

Optionally, the inner edge beam comprises a first side wall and a second side wall, the first side wall and the second side wall enclose to form an L-shaped structure, the first side wall is fixed to the bottom wall of the floor, and the second side wall is fixed to the side wall of the outer edge beam.

Optionally, the inner edge beam further includes a third sidewall, the third sidewall is connected to a side of the second sidewall far from the first sidewall, so that the first sidewall, the second sidewall and the third sidewall enclose to form a Z-shaped structure, and the third sidewall is fixed to the bottom wall of the outer edge beam.

Optionally, the inner sill includes a middle section and an end section, the middle section is connected to the first section and between the floors, the middle section includes the first side wall and the second side wall, the end section is connected to the second section and between the floors, the end section includes the first side wall, the second side wall and the third side wall.

Optionally, the inner edge beam further includes a reinforcing structure, a bend is formed between the reinforcing structure and the second side wall, and the reinforcing structure is located on one side of the second side wall, which is far away from the third side wall; the reinforcing structure can be sandwiched between the side wall of the outer beam and the floor.

Optionally, each side wall of the inner edge beam and the floor, and each side wall of the inner edge beam and the outer edge beam are riveted and fixed by rivets.

The utility model also provides a railway vehicle which comprises the edge beam of the front end underframe.

The technical effect of the rail vehicle with the boundary beam of the front end underframe is similar to that of the boundary beam of the front end underframe, and is not repeated herein for saving space.

Drawings

FIG. 1 is a schematic structural view of an outer sill of a rocker provided in accordance with an embodiment of the present invention;

FIG. 2 is a schematic structural view of an inner sill of a rocker provided in accordance with an embodiment of the present invention;

FIG. 3 is a cross-sectional view of the location of the first section of the outer sill in the installed condition of the side sill and floor;

FIG. 4 is a cross-sectional view of the second section of the outer sill in the installed condition of the sill and floor.

In fig. 1-4, the reference numerals are illustrated as follows:

1-outer edge beam, 11-first section, 12-second section, 13-bulge, 14-transition section;

2-inner edge beam, 21-first side wall, 22-second side wall, 23-third side wall, 24-reinforcing structure;

3-floor, 31-joint;

4-rivet.

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

The embodiment of the utility model provides a rail vehicle and an edge beam of a front end chassis of the rail vehicle, wherein the rail vehicle comprises a vehicle body, the vehicle body comprises the front end chassis, the front end chassis comprises the edge beam, the edge beam comprises an outer edge beam 1 and an inner edge beam 2, and specifically, the outer edge beam 1 and the inner edge beam 2 are both made of carbon fiber composite beams, so that the overall weight of the edge beam can be reduced, the light weight requirement of the rail vehicle can be realized, and the problems of large resistance, high energy consumption and the like of the rail vehicle can be reduced after the rail vehicle accelerates.

Specifically, the boundary beam of front end chassis and rail vehicle's floor 3 are connected, and is concrete, directly through rivet 4 riveting connection between the up end of boundary beam 1 and the floor 3, as shown in fig. 3 and 4, the lateral wall of floor 3 is equipped with connecting portion 31, this connecting portion 31 can overlap joint in the roof of boundary beam 1 to it can directly through rivet 4 riveting fixation, simultaneously, the lateral wall of boundary beam 1 passes through interior boundary beam 2 and is connected with the diapire of floor 3, so in order to guarantee the joint strength between boundary beam and the floor 3.

As shown in fig. 1, the outer edge beam 1 comprises a first section 11 and two second sections 12, wherein the two second sections 12 are respectively located at two ends of the first section 11, the cross-sectional area of the first section 11 is larger than that of the second section 12, that is, the outer edge beam 1 is similar to a variable cross-section structure with a thick middle part and thin two ends, so that the overall rigidity of the outer edge beam 1 in the longitudinal direction can be increased.

In this embodiment, front end chassis boundary beam is the carbon-fibre composite roof beam, in order to do benefit to and realize the lightweight target, set up outside roof beam 1 into the variable cross section structure simultaneously, can guarantee the overall structure rigidity of this boundary beam, through the lug connection between outside roof beam 1 and the floor 3, and connect through interior boundary beam 2 is indirect between outside roof beam 1 and the floor 3, in order to guarantee the structural strength of the junction between boundary beam and the floor 3, and then when realizing effectively subtracting heavy purpose, guarantee overall structure intensity, provide and dodge the space for better designing front end chassis structure.

Specifically, the width of the first section 11 is the same as that of the second section 12, and the height of the top wall of the first section 11 is the same as that of the top wall of the second section 12, that is, the top wall of the first section 11 and the top wall of the second section 12 are aligned, and the connecting portion 31 of the floor panel 3 can be connected to the top wall of the first section 11 and the top wall of the second section 12. As shown in fig. 1, the bottom wall of the first section 11 is provided with a protruding portion 13, the protruding portion 13 protrudes downward relative to the bottom wall of the second section 12, so that the sectional area of the first section 11 is larger than that of the second section 12, that is, only the bottom of the middle position of the outer beam 1 protrudes downward, so that the sectional area of the first section 11 located at the middle position is larger, and the arrangement is such that the first section 11 does not affect the connection between the first section 11 and the floor 3 under the condition of increasing the sectional area, and does not interfere with other peripheral components.

As shown in fig. 1, an excessive tangent plane 14 is provided between the end of the protruding portion 13 and the second section 12, specifically, the outer edge beam 1 is prepared by preparing a composite beam body having the same cross-sectional area (the same as the cross-sectional area of the first section 11), then cutting a layer at the bottom of each of the two ends of the composite beam body, so that the second section 12 is formed at each of the two ends of the composite beam body, the first section 11 is formed at the uncut position of the middle portion of the composite beam body, and the excessive tangent plane 14 is formed at the cut position between the first section 11 and the second section 12, so that the preparation process of the outer edge beam 1 can be simplified.

As shown in fig. 3, the cross section of the first section 11 is a mesh-shaped structure, as shown in fig. 4, the cross section of the second section 12 is a herringbone structure, and the mesh-shaped structure and the herringbone structure have the same partial width and different heights, which is equivalent to that a composite material beam body with a cross section in a mesh-shaped structure is prepared first, and then the bottom parts at the two ends are cut to make the cross sections at the two ends in a herringbone structure.

The inner edge beam 2 comprises a first side wall 21 and a second side wall 22, the first side wall 21 and the second side wall 22 can be enclosed to form an L-shaped structure as shown in fig. 3, wherein the first side wall 21 and the bottom wall of the floor 3 are riveted and fixed through rivets 4, the second side wall 22 and the side wall of the outer edge beam 1 are riveted and fixed through the rivets 4, the structure of the inner edge beam 2 is simple, and the specific position can be determined according to the thickness of the floor 3.

As shown in fig. 2, the inner side beam 2 further comprises a third side wall 23, the third side wall 23 is connected to a side of the second side wall 22 far away from the first side wall 21, so that the first side wall 21, the second side wall 22 and the third side wall 23 can be enclosed to form a Z-shaped structure as shown in fig. 4, wherein the third side wall 23 is riveted and fixed with the bottom wall of the outer side beam 1 by a rivet 4, so as to further enhance the structural strength of the outer side beam 1.

Since the outer frame 1 has a variable cross-section structure, the cross-sectional area of the first section 11 at the middle position is larger than the cross-sectional area of the second section 12 at the end position, in this embodiment, the inner frame 2 is also configured to include a middle section and an end section, wherein the middle section is connected between the first section 11 and the floor 3, the middle section includes a first side wall 21 and a second side wall 22, the cross-section of the middle section is L-shaped, the end section is connected between the second section 12 and the floor 3, the end section includes a first side wall 21, a second side wall 22 and a third side wall 23, and the cross-section of the end section is Z-shaped. That is, the cross-sections of both ends of the inner girder 2 are Z-shaped structures, and the cross-section of the middle position of the inner girder 2 is L-shaped structure.

Since the first side wall 21 and the floor 3 are fixedly riveted by the rivet 4 and the second side wall 22 and the outer side member 1 are fixedly riveted by the rivet 4, the structural strength of the joint between the floor 3 and the outer side member 1 can be increased and the second side wall 22 can reinforce the entire structural strength of the side member. In addition, since the first section 11 has a large cross-sectional area and a mesh-like structure, the rigidity of the side sill at this position can be increased, the cross-sectional area of the second section 12 is small, and the structural strength of the second section 12 can be further enhanced when the third side wall 23 is fixed to the bottom wall of the second section 12.

That is to say, in this embodiment, the boundary beam is the carbon-fibre composite roof beam to through setting up boundary beam 1 into the structure of variable cross section in order to guarantee the bulk rigidity, connect simultaneously between boundary beam 1 and floor 3 through interior boundary beam 2, in order to increase overall structure intensity, so can realize the lightweight target while, improved whole car high strength, provide the space of dodging for the better design front end chassis structure.

The inner edge beam 2 further comprises a transition section connected between the middle section and the end section, which corresponds to the location of the transition section 14, and which is connected between the location of the transition section 14 of the outer edge beam 1 and the floor 3.

In this embodiment, as shown in fig. 2, the inner edge beam 2 is further provided with a reinforcing structure 24, the reinforcing structure 24 is bent from the second side wall 22, and the reinforcing structure 24 is located on the side of the second side wall 22 away from the third side wall 23, so that when the inner edge beam is installed, the reinforcing structure 24 can be sandwiched between the side wall of the outer edge beam 1 and the floor 3, and can be riveted and fixed with the side wall of the outer edge beam 1 and the side wall of the floor 3 by rivets 4. This additional strengthening 24's setting can increase the overall structure intensity of interior boundary beam 2, further guarantees the overall stability of this boundary beam.

Specifically, in the present embodiment, the specific structure of the reinforcing structure 24 is not limited, and as shown in fig. 2, the reinforcing structures 24 are provided only in the middle section and one end section of the inner sill 2, that is, the number of the reinforcing structures 24 is two, and the reinforcing structures 24 are provided at intervals. Or, the inner side beams 2 can be provided with the reinforcing structures 24 (which can be a continuous whole or a plurality of reinforcing structures are arranged at intervals) along the longitudinal direction, and when the two reinforcing structures 24 are arranged at intervals, the strength of the whole structure can be ensured, the whole structure can be simplified, and the manufacturing cost can be reduced.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.

Claims

1. The boundary beam of the front end underframe of the railway vehicle is characterized by comprising an outer boundary beam (1) and an inner boundary beam (2), wherein the outer boundary beam (1) and the inner boundary beam (2) are both carbon fiber composite material beams;

the outer edge beam (1) comprises a first section (11) and second sections (12) positioned at two ends of the first section (11), and the sectional area of the first section (11) is larger than that of the second sections (12);

the roof of outer boundary beam (1) is connected with connecting portion (31) on rail vehicle's floor (3), the lateral wall of outer boundary beam (1) pass through interior boundary beam (2) with be connected between the diapire on floor (3).

2. The sill of the front underframe of a railway vehicle as claimed in claim 1, characterized in that said first section (11) and said second section (12) have the same width, and in that the top wall of said first section (11) is aligned with the top wall of said second section (12), and in that the bottom wall of said first section (11) is provided with a projection (13) projecting downwards with respect to the bottom wall of said second section (12), so that the cross-sectional area of said first section (11) is greater than the cross-sectional area of said second section (12).

3. Boundary beam of a front end underframe of a railway vehicle according to claim 2, characterized in that an over-tangent plane (14) is provided between the end of the bulge (13) and the second section (12).

4. The edge beam of a front end underframe of a railway vehicle as claimed in claim 2, characterized in that the cross section of the first section (11) is in a herringbone structure, and the cross section of the second section (12) is in a herringbone structure.

5. The sill of the front underframe of a railway vehicle as claimed in any one of claims 1 to 4, wherein said inner sill (2) comprises a first side wall (21) and a second side wall (22), said first side wall (21) and said second side wall (22) enclosing an L-shaped structure, said first side wall (21) being fixed to the bottom wall of said floor (3) and said second side wall (22) being fixed to the side wall of said outer sill (1).

6. Boundary beam of a front end chassis of a rail vehicle according to claim 5, characterized in that the inner boundary beam (2) further comprises a third side wall (23), the third side wall (23) is connected to the second side wall (22) at a side away from the first side wall (21), so that the first side wall (21), the second side wall (22) and the third side wall (23) enclose a Z-shaped structure, and the third side wall (23) is fixed with the bottom wall of the outer boundary beam (1).

7. Boundary beam of a front end underframe of a railway vehicle according to claim 6, characterized in that said inner boundary beam (2) comprises a middle section and an end section, said middle section being connected between said first section (11) and said floor (3), said middle section comprising said first side wall (21) and said second side wall (22), said end section being connected between said second section (12) and said floor (3), said end section comprising said first side wall (21), said second side wall (22) and said third side wall (23).

8. The edge beam of a front end chassis of a railway vehicle according to claim 7, characterized in that the inner edge beam (2) further comprises a reinforcing structure (24), the reinforcing structure (24) forms a bend with the second side wall (22), and the reinforcing structure (24) is located on the side of the second side wall (22) away from the third side wall (23);

the reinforcing structure (24) can be clamped between the side wall of the outer edge beam (1) and the floor (3).

9. Boundary beam of a front end chassis of a rail vehicle according to any of claims 1-4, characterized in that the riveting of rivets (4) is applied between the respective side walls of the inner boundary beam (2) and the floor (3) and between the respective side walls of the inner boundary beam (2) and the outer boundary beam (1).

10. A rail vehicle comprising a side rail of a front end chassis according to any one of claims 1-9.