A connecting structure of a chassis and a side wall, a car body and a railway vehicle

Abstract

The application discloses a connecting structure of a chassis and a side wall, a vehicle body and a railway vehicle, and relates to the technical field of railway vehicles. The connecting structure comprises a chassis and a side wall, wherein the chassis comprises a floor and a side beam, a support part is arranged on a first side of the side beam, the support part is used for supporting the floor, and the floor is connected with the side beam through a first connecting piece; the side wall comprises an inner plate and an outer plate, the inner plate is arranged above the side beam and connected with the side beam or the floor, and the outer plate extends to a second side of the side beam and is connected with the side beam through a second connecting piece, wherein the second side is a side of the side beam away from the floor. By extending the outer plate of the side wall to the side of the side beam, the contact area of the side beam and the outer plate can be increased; in addition, the inner plate of the side wall is connected with the side beam or the floor, so that the connecting strength of the side wall can be improved; in addition, the outer plate and the side beam are in contact, so that the side wall can be positioned in the horizontal direction; in addition, the support part arranged on the side beam is used for supporting the floor, so that the floor can be positioned in the vertical direction, and therefore the installation of the side wall and the chassis can be facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of rail vehicles, and in particular to a connection structure between an underframe and a side wall, a vehicle body, and a rail vehicle. Background Art

[0002] As rail transit train speeds continue to increase, the need for new lightweight materials is becoming increasingly urgent to reduce energy consumption. Traditional steel and aluminum alloys offer limited lightweight design options, so lighter carbon fiber composites are becoming the preferred material of choice.

[0003] Existing composite vehicle bodies are typically split designs, generally requiring a fixed connection between the chassis and side walls. However, the existing connection method mainly fixes the side walls directly to the chassis, which places high demands on the assembly precision of the two. In addition, the connection is mainly made by welding. Due to the limited overlap area between the chassis and side walls, the connection stability is poor. Summary of the Invention

[0004] The object of the present invention is to provide a connection structure between an underframe and a side wall, a vehicle body and a rail vehicle, which can not only facilitate the connection between the underframe and the side wall, but also effectively improve the connection strength between the underframe and the side wall.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A connection structure between a base frame and side walls, comprising a base frame and side walls, the base frame comprising a floor and side beams, a support portion being provided on a first side of the side beam, the support portion being used to support the floor, and the floor being connected to the side beams via a first connecting piece; the side walls comprising an inner panel and an outer panel, the inner panel being located above the side beams and connected to the side beams or the floor, the outer panel extending to a second side of the side beams and being connected to the side beams via a second connecting piece, the second side being a side of the side beam away from the floor.

[0007] In some embodiments, the support portion is a support platform provided on the first side, and one side of the floor is provided on the support platform.

[0008] In some embodiments, a lap edge is provided on one side of the upper portion of the floor, the lap edge is located on the upper surface of the side beam, and the lap edge is fixed to the side beam via the first connecting member.

[0009] In some embodiments, a support plate extending in a vertical direction is provided on the upper portion of the side beam, and the inner plate and the support plate are connected by a third connecting member.

[0010] In some embodiments, a bottom plate is integrally formed between the bottom of the inner plate and a side of the outer plate facing the inner plate, and a preset gap is left between the lower surface of the bottom plate and the upper surface of the side beam.

[0011] In some embodiments, a chamfer is provided at a junction between an upper surface of the side beam and a surface of the side beam facing the outer panel.

[0012] In some embodiments, the supporting portion is a first inclined surface arranged on the first side of the side beam, the distance between the first inclined surface and the second side increases gradually from top to bottom, and one side of the floor is provided with a second inclined surface that cooperates with the first inclined surface.

[0013] In some embodiments, an L-shaped connecting plate is provided on one side of the floor, the horizontal plate of the L-shaped connecting plate is connected to the side beam, and the vertical plate of the L-shaped connecting plate is connected to the inner plate.

[0014] A vehicle body comprises the connection structure between the underframe and the side walls as described in any one of the above items.

[0015] A rail vehicle comprises the above-mentioned vehicle body.

[0016] Compared with the existing technology, the above technical solution has the following advantages:

[0017] The present invention provides a connection structure between a chassis and side walls, a vehicle body, and a rail vehicle, comprising a chassis and side walls, wherein the chassis comprises a floor and side beams, a first side of the side beams being provided with a support portion for supporting the floor, and the floor being connected to the side beams via a first connecting member; the side walls comprising an inner panel and an outer panel, the inner panel being located above the side beams and connected to the side beams or the floor, wherein the outer panel extends to a second side of the side beams and is connected to the side beams via a second connecting member, the second side being the side of the side beams away from the floor. By extending the outer panel of the side wall to the side of the side beams, the contact area between the two can be increased. In addition, the connection of the inner panel of the side wall to the side beams or the floor can strengthen the connection strength of the side wall. In addition, the contact between the outer panel and the side beams can play a role in horizontal positioning of the side wall. In addition, by providing a support portion on the side beams to support the floor, the floor can play a role in vertical positioning of the floor, thereby facilitating the installation of the side wall and chassis. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0019] Figure 1A schematic diagram of a connection structure between a base frame and a side wall provided in a specific embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of a connection structure between a base frame and a side wall provided in another specific embodiment of the present invention.

[0021] The reference numerals are as follows:

[0022] 10-base frame, 11-floor, 111-lap edge, 112-L-shaped connecting plate, 113-support member, 12-side beam, 121-support platform, 122-chamfer;

[0023] 20-side wall, 21-inner panel, 22-outer panel;

[0024] 30-first connecting member;

[0025] 40- second connecting member;

[0026] 50- third connecting piece;

[0027] 60-Fourth connecting piece. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Please refer to Figure 1 and Figure 2 , an embodiment of the present invention provides a connection structure between a base frame 10 and a side wall 20, including a base frame 10 and a side wall 20, wherein the base frame 10 includes a floor 11 and a side beam 12, a first side of the side beam 12 is provided with a support portion, the support portion is used to support the floor 11, the floor 11 is connected to the side beam 12 through a first connecting member 30, and the first connecting member 30 can be a rivet; the side wall 20 can be made of carbon fiber composite material, and the side wall 20 includes an inner panel 21 and an outer panel 22, the inner panel 21 is located above the side beam 12, and is connected to the side beam 12 or the floor 11, as shown in FIG. Figure 1 The inner plate 21 is connected to the side beam 12, as shown in FIG. Figure 2The inner plate 21 is connected with the edge beam 12, and the outer plate 22 extends to the second side of the edge beam 12 and is connected with the edge beam 12 through the second connecting member 40, the second side being the side of the edge beam 12 away from the floor 11, and the second connecting member 40 can be a rivet, and specifically, a plurality of rivets in the vertical direction can be connected between the edge beam 12 and the outer plate 22 to improve the connection strength. Further, a cover can be arranged outside the extended plate of the outer plate 22, and the cover can cover the rivets, and the cover can be attached or clamped on the outer side of the outer plate 22. By extending the outer plate 22 of the side wall 20 to the side of the edge beam 12, the contact area of the two can be increased. In addition, the connection strength of the side wall 20 can be improved by connecting the inner plate 21 of the side wall 20 with the edge beam 12 or the floor 11. In addition, the side wall 20 can be positioned in the horizontal direction by the contact between the outer plate 22 and the edge beam 12. In addition, the floor 11 can be positioned in the vertical direction by the support of the support portion of the edge beam 12, so that the installation of the side wall 20 and the chassis 10 can be facilitated.

[0030] In some embodiments, the support portion is a support table 121 arranged on the first side, as shown in Figure 1 As shown, the first side of the edge beam 12 is provided with a support table 121 extending in the horizontal direction, and one side of the floor 11 is arranged on the support table 121. The side of the upper portion of the floor 11 is provided with a lap joint edge 111, and the lap joint edge 111 is located on the upper surface of the edge beam 12, that is, the floor 11 is supported by the support table 121 and the upper surface of the edge beam 12, and the lap joint edge 111 is fixed to the edge beam 12 through the first connecting member 30, and structural glue can be arranged between the lap joint edge 111 and the upper surface of the edge beam 12 to play a sealing role. A gap is left between the first side of the edge beam 12 and the side of the floor 11 to facilitate adjustment of the relative position between the floor 11 and the edge beam 12, thereby facilitating assembly of the two.

[0031] In some embodiments, the upper portion of the edge beam 12 is provided with a support plate extending in the vertical direction, and the inner plate 21 and the support plate are connected through a third connecting member 50, as shown in Figure 1The support plate shown is located on the right side of the inner plate 21. The support plate can limit the inner plate 21 in the horizontal direction. The third connecting member 50 can be a rivet. In addition, structural adhesive can be set between the inner plate 21 and the support plate to play a sealing role. The side wall 20 includes a connecting portion located above the side beam 12 and a wall located above the connecting portion. The wall and the connecting portion are formed in one piece. Reinforcing ribs are provided between the inner and outer plates of the wall. The reinforcing ribs are arranged obliquely relative to the horizontal plane. The thickness of the wall is less than the thickness of the connecting portion, and the height of the connecting portion is higher than the height of the support plate. The connecting portion and the wall of different thicknesses can improve the connection stability between the side wall 20 and the side beam 12 on the one hand, and increase the internal space of the vehicle body on the other hand. In addition, it can also reduce the weight of the vehicle body. Furthermore, the thickness of the section at the junction of the connecting portion and the wall gradually decreases from bottom to top to ensure the structural strength of the side wall 20.

[0032] In some embodiments, a bottom plate is integrally formed between the bottom of the inner plate 21 and the side of the outer plate 22 facing the inner plate 21, that is, the inner plate 21, the outer plate 22 and the bottom plate are an integrally formed structure, such as Figure 1 As shown, a preset gap is left between the lower surface of the bottom plate and the upper surface of the side beam 12 to ensure that there is a certain adjustment space when the large-scale flexible assembly is carried out in the general assembly process. The gap between the bottom plate and the side beam 12 is sealed with sealant to ensure the airtightness of the vehicle body.

[0033] In some embodiments, a chamfer 122 is provided at the junction between the upper surface of the side beam 12 and the surface of the side beam 12 facing the outer plate 22. Figure 1 As shown, the upper left corner of the side beam 12 is provided with a chamfer 122, which can avoid the side beam 12 from producing a tip extrusion phenomenon at the corner of the outer plate 22 and the bottom plate, thereby ensuring the assembly stability of the side wall 20 and the side beam 12. The side beam 12 is preferably a hollow structure, for example Figure 1 As shown, the cross section of the side beam 12 includes three U-shaped structures, which are respectively recorded as a corner U-shaped structure, a side U-shaped structure and a bottom U-shaped structure, wherein the side U-shaped structure is located on the right side of the corner U-shaped structure, the bottom U-shaped structure is located at the bottom of the corner U-shaped structure, the outer plate 22 extends downward to the side of the low-position U-shaped structure, the support platform 121 is located on the right side of the side U-shaped structure, the support plate is located at the upper part of the junction of the corner U-shaped structure and the side U-shaped structure, and a chamfer 122 is provided at the upper left corner of the corner U-shaped structure.

[0034] In some embodiments, as Figure 2As shown, the support portion is a first inclined surface provided on the first side of the side beam 12. The distance between the first inclined surface and the second side of the side beam 12 gradually increases from top to bottom, that is, the cross-section of the side beam 12 is a right-angled trapezoidal structure. In order to improve the structural strength of the side beam 12, a reinforcing plate extending in the horizontal direction can be provided inside the side beam 12. The two sides of the reinforcing plate are respectively connected to the two sides inside the side beam 12. The reinforcing plate can be integrally formed with the side beam 12. A second inclined surface that cooperates with the first inclined surface is provided on one side of the floor 11. In order to facilitate the connection of the floor 11, a support member 113 can be provided at the bottom of the floor 11. The support member 113 includes a transverse connector and a lateral connector. The transverse connector and the lateral connector are an integrally formed structure. The transverse connector can be connected to the bottom of the floor 11. The lateral connector is provided with a second inclined surface. The second inclined surface of the lateral connector contacts the first inclined surface of the side beam 12. That is, the support member 113 is supported by the side beam 12, and the floor 11 is supported by the support member 113. Specifically, each side of the floor 11 corresponds to a side beam 12, and the opposing sides of the two side beams 12 are provided with a first inclined surface, that is, the distance between the two side beams 12 gradually decreases from top to bottom. A support member 113 is provided on each side of the bottom of the floor 11, and the distance between the second inclined surfaces of the lateral connectors of the two support members 113 gradually decreases from top to bottom. When the floor 11 is placed between the two side beams 12, the first inclined surface can provide support for the floor 11. Furthermore, the side connectors can be fixed to the side beams 12 via fourth connectors 60, where the fourth connectors 60 can be rivets.

[0035] In some embodiments, an L-shaped connecting plate 112 is provided on one side of the floor 11, wherein the horizontal plate of the L-shaped connecting plate 112 is connected to the side beam 12, and the vertical plate of the L-shaped connecting plate 112 is connected to the inner plate 21. Figure 2 As shown, by connecting the L-shaped connecting plate 112 to the side beam 12 and the inner plate 21 respectively, the connection strength of the three can be effectively improved, thereby ensuring the connection stability of the side wall 20 and the base frame 10.

[0036] An embodiment of the present invention also provides a vehicle body, including the connection structure between the base frame 10 and the side wall 20 provided in any of the above embodiments. Regarding the beneficial effects of the vehicle body, reference can be made to the connection structure between the base frame 10 and the side wall 20 provided in the above embodiments, which will not be repeated here.

[0037] An embodiment of the present invention further provides a rail vehicle, comprising the vehicle body provided in the above embodiment. For the beneficial effects of the rail vehicle, reference may be made to the connection structure between the base frame 10 and the side wall 20 provided in the above embodiment, which will not be described in detail here.

[0038] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0039] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0040] The above describes in detail the connection structure between the chassis and side walls, the vehicle body, and the rail vehicle provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only intended to help understand the core concept of the present invention. It should be noted that for those skilled in the art, various improvements and modifications can be made to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A connection structure between a base frame and a side wall, comprising a base frame (10) and a side wall (20), characterized in that: The base frame (10) includes a floor (11) and a side beam (12), wherein a first side of the side beam (12) is provided with a support portion, wherein the support portion is used to support the floor (11), and the floor (11) is connected to the side beam (12) via a first connecting member (30); the side wall (20) includes an inner plate (21) and an outer plate (22), wherein the inner plate (21) is located above the side beam (12) and is connected to the side beam (12) or the floor (11), and the outer plate (22) extends to a second side of the side beam (12) and is connected to the side beam (12) via a second connecting member (40), wherein the second side is a side of the side beam (12) away from the floor (11).

2. The connection structure between the base frame and the side wall according to claim 1, characterized in that: The supporting portion is a supporting platform (121) arranged on the first side, and one side of the floor (11) is arranged on the supporting platform (121).

3. The connection structure between the base frame and the side wall according to claim 2, characterized in that: An overlapping edge (111) is provided on one side of the upper portion of the floor (11), the overlapping edge (111) being located on the upper surface of the side beam (12), and the overlapping edge (111) being fixed to the side beam (12) via the first connecting member (30).

4. The connection structure between the base frame and the side wall according to claim 3, characterized in that: A support plate extending in a vertical direction is provided on the upper portion of the side beam (12), and the inner plate (21) and the support plate are connected via a third connecting member (50).

5. The connection structure between the base frame and the side wall according to claim 4, characterized in that: A bottom plate is integrally formed between the bottom of the inner plate (21) and the side of the outer plate (22) facing the inner plate (21), and a preset gap is left between the lower surface of the bottom plate and the upper surface of the side beam (12).

6. The connection structure between the base frame and the side wall according to claim 5, characterized in that: A chamfer (122) is provided at a junction between the upper surface of the side beam (12) and the surface of the side beam (12) facing the outer plate (22).

7. The connection structure between the base frame and the side wall according to claim 1, characterized in that: The support portion is a first inclined surface provided on the first side of the side beam (12), the distance between the first inclined surface and the second side gradually increases from top to bottom, and a second inclined surface cooperating with the first inclined surface is provided on one side of the floor (11).

8. The connection structure between the base frame and the side wall according to claim 7, characterized in that: An L-shaped connecting plate (112) is provided on one side of the floor (11), wherein the horizontal plate of the L-shaped connecting plate (112) is connected to the side beam (12), and the vertical plate of the L-shaped connecting plate (112) is connected to the inner plate (21).

9. A vehicle body, characterized in that: The connecting structure comprising the base frame and the side wall according to any one of claims 1 to 8.

10. A rail vehicle, characterized in that: Comprising the vehicle body according to claim 9.

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