CN201472392U

CN201472392U - Thin wall type section bar plate with hollow side bar

Info

Publication number: CN201472392U
Application number: CN2009201700551U
Authority: CN
Inventors: 张曙光; 王军; 龚明; 丁叁叁; 宋波; 卢衍祥; 郝刚; 郭志成
Original assignee: CSR Qingdao Sifang Locomotive and Rolling Stock Co Ltd
Current assignee: CRRC Qingdao Sifang Co Ltd
Priority date: 2009-08-11
Filing date: 2009-08-11
Publication date: 2010-05-19
Anticipated expiration: 2019-08-11

Abstract

The utility model provides a thin wall type section bar with hollow side bar, which adopts an aluminium alloy hollow thin-wall type section bar on a connection part between the lower of a side wall of a vehicle body and a floor of a bottom frame, the inner cavity of the section bar plate is divided into irregular polygon, two ends are installed and welded after simple overlapping or inserting. The irregular continuous polygon inner cavity is used for improving the connection performance of the lower of the side wall, reduces vibration of the bottom of the vehicle body and noise generated by the vibration in a condition of high-speed operation. the thin-wall type section bar with hollow side bar has an inner plate vertical to a horizontal surface and an outer plate, a plurality of continuous inclined rib plates are arranged between the inner plate and the outer plate, the adjacent inclined rib plate divides the inner cavity of the section bar plate into a plurality of polygons. The end parts of the thin-wall type section bar plate are provided with a pair of inserting sheet inserted from inner to outer, wherein, the end parts are connected mutually. The connection part of the thin-wall type section bar plate with hollow side bar and the side wall of the vehicle body is provided with a welding nozzle. The connection part of the thin-wall type section bar plate with hollow side bar and the side wall of the vehicle body is provided with a connection hook.

Description

Hollow side beam thin-wall section plate

Technical Field

The utility model relates to a be applied to cavity boundary beam thin-walled section bar board of rail vehicle automobile body belongs to the machine-building field.

Background

At present, the speed per hour of domestic motor train units reaches over 300 kilometers, and the high-speed running of the rail vehicles inevitably generates the design requirement of giving consideration to the rigidity strength and the lightweight structure of the train body.

The light vehicle body of the existing high-speed railway vehicle generally adopts aluminum alloy sections, and the aluminum alloy sections generally adopt a framework shell, a thin section single-shell or hollow double-shell structure and the like. Along with the increase of the running speed of the rail vehicle, the interior of the hollow aluminum alloy section is of a quadrilateral structure, so that the requirements of the mechanical property and the welding property of a vehicle body at a high speed cannot be met. Therefore, the rigidity and the weight reduction performance cannot be unified, and certain difficulties exist in designing and using the high-speed vehicle body.

In addition, for building and connecting a lightweight vehicle body frame, there are practical problems that the connection structure is complicated, and deformation is likely to occur after connection.

SUMMERY OF THE UTILITY MODEL

Cavity boundary beam thin-walled profile board, can solve above-mentioned problem and the junction between automobile body side wall below and chassis floor adopts aluminum alloy cavity thin-walled profile, irregular polygon is cut apart into to the profile board inner chamber, the installation of welding is implemented again after both ends are connected through simple and easy overlap joint or grafting.

The utility model discloses a design aim at realizes a lightweight boundary beam structure, improves side wall below connection performance through anomalous continuous polygon inner chamber, reduces the vibrations of bottom of the car body and the noise that produces from this under the high-speed running state.

The other design aim is to realize the light weight design of the vehicle body and the optimized welding and mechanical properties on the premise of meeting the requirements of rigidity and strength parameters.

In order to achieve the design purpose, the hollow boundary beam thin-wall section plate is formed into an integrated structure through an extrusion process. The difference from the prior art is that,

the inner plate is vertical to the horizontal plane, the outer plate is vertical to the horizontal plane, and a plurality of continuous inclined rib plates are arranged between the inner plate and the outer plate. The inner cavity of the section bar plate is divided into a plurality of polygons by the adjacent inclined rib plates.

A pair of inserting pieces which are inserted inside and outside are arranged at the end parts of the hollow boundary beam thin-wall section plates which are connected with each other,

a welding groove is arranged at the connecting part of the hollow side beam thin-wall section plate and the side wall of the vehicle body,

and a connecting hook is arranged at the connecting part of the hollow edge beam thin-wall section plate and the equipment cabin apron plate.

According to the basic scheme, the outer plate of the hollow edge beam thin-wall section plate can be in a straight line or circular arc shape perpendicular to the horizontal plane according to the integral shape of the side wall of the vehicle body.

The inner cavity is divided into polygons by the inclined rib plates, and the polygons comprise triangles, quadrangles such as rhombuses and rectangles, or pentagons and the like.

The triangle is a stable structure, and the length ratio of the adjacent inclined rib plates in the triangle divided by the continuous inclined rib plates is selected to be 1: 0.8-1.3.

In order to improve the connection performance of parts between the vehicle body and the underframe, a plurality of connecting brackets are arranged on the inner side of the inner plate.

In order to optimize and further improve the rigidity and strength indexes of the section plates, the section thickness of the connecting part of the inclined rib plate and the inner plate or the outer plate is larger than that of other parts of the inner plate or the outer plate.

In order to improve the spot welding connection performance of the inserted section plates, after the two adjacent hollow boundary beam thin-wall section plates are inserted, a welding groove with the angle of 60-80 degrees is formed between the inserting pieces.

The optimized connection scheme can be that a bracket for installing and connecting the underframe floor is arranged at the connecting top points of 2 adjacent inclined rib plates on the inner side of the inner plate of the hollow boundary beam thin-wall section plate. Thus, the requirements of higher mechanical and welding performance can be met.

In order to ensure the appearance shape of the outer plate is consistent with that of the side wall of the car body, the outer surface of the outer plate can be an arc surface, namely, the outer surface of the outer plate and the side wall of the car body form a continuous curve transition structure.

As described above, the utility model discloses cavity boundary beam thin-walled profile board has advantage and beneficial effect to be:

1. the design requirements of light weight and bearing rigidity are considered on the whole, and the connection strength of the underframe of the whole vehicle body is effectively improved.

2. In a high-speed running state, vibration of the bottom of the vehicle body and noise generated thereby can be reduced, thereby improving riding comfort inside the vehicle compartment.

3. The connecting strength between the boundary beam and the floor is optimized, so that the automation level of the assembly welding process of the underframe of the car body is improved, and the problems of welding quantity and deformation in the welding process are reduced.

Drawings

The invention will now be further described with reference to the following drawings.

FIG. 1 is a cross-sectional view of a body frame of a high speed rail vehicle;

FIG. 2 is a schematic structural view of the hollow edge beam thin-walled profile plate;

FIG. 3 is an enlarged schematic view of section I of FIG. 2;

as shown in fig. 1 to 3, an inner plate 1, an outer plate 2, an inclined rib plate 3, an insert 4, a connecting part 5, a welding groove 6, a bracket 7, a welding groove 8, a connecting hook 9,

the roof 10, the side wall 11, the side beam 12, the chassis floor 13.

Detailed Description

In embodiment 1, as shown in fig. 1, in a vehicle body frame of a high-speed rail vehicle, hollow side sill thin-wall section plates are inserted into each other and are assembled and welded to form a side sill 12, and an underframe floor 13 is overlapped with the side sill 12 below a vehicle body side wall 11 and is then connected by assembly and welding.

As shown in fig. 2 and 3, the hollow-walled profile plate is formed into a unitary structure by an extrusion process. Wherein,

the section bar plate comprises an inner plate 1 vertical to a horizontal plane and an outer plate 2 with a section of continuous arc surface on the outer surface, wherein a plurality of continuous inclined rib plates 3 are arranged between the inner plate 1 and the outer plate 2, and the inner cavity of the section bar plate is divided into a plurality of triangles and quadrangles by the adjacent inclined rib plates 3.

In the divided triangle, the length ratio of the adjacent diagonal rib plates 3 is 1: 1.1.

The end parts of the hollow edge beam thin-wall section plates which are connected with each other are provided with a pair of insertion pieces 4 which are inserted inside and outside. After two adjacent hollow boundary beam thin-wall section plates are mutually spliced, a welding groove 6 with an angle of 70 degrees is formed between the inserting pieces 4.

And a welding bevel 8 is arranged at the connecting part of the hollow side beam thin-wall section plate and the side wall 11 of the vehicle body.

And a connecting hook 9 is arranged at the connecting part of the hollow edge beam thin-wall section plate and the equipment cabin apron plate.

A plurality of connecting brackets 7 are arranged on the inner side of the inner plate 1, and the brackets 7 for installing and connecting the underframe floor 13 are arranged at the connecting top points of 2 adjacent inclined rib plates 3.

The section thickness of the connecting part 5 between the inclined rib plate 3 and the inner plate 1 or the outer plate 2 is larger than that of other parts of the inner plate 1 or the outer plate 2.

Claims

1. The utility model provides a cavity boundary beam thin-walled section bar board, forms integral type structure through extrusion process which characterized in that: comprises an inner plate (1) and an outer plate (2) which are vertical to the horizontal plane, a plurality of continuous inclined rib plates (3) are arranged between the inner plate (1) and the outer plate (2),

a pair of inserting pieces (4) which are inserted inside and outside are arranged at the end parts of the hollow boundary beam thin-wall section plates which are connected with each other,

a welding groove (8) is arranged at the connecting part of the hollow side beam thin-wall section plate and the side wall (11) of the car body,

and a connecting hook (9) is arranged at the connecting part of the hollow side beam thin-wall section plate and the equipment cabin apron plate.

2. The hollow edge beam thin-walled profile panel of claim 1, wherein: the inner side of the inner plate (1) is provided with a plurality of connecting brackets (7).

3. The hollow edge beam thin-walled profile panel of claim 1 or 2, wherein: the section thickness of the connecting part (5) between the inclined rib plate (3) and the inner plate (1) or the outer plate (2) is larger than that of other parts of the inner plate (1) or the outer plate (2).

4. The hollow edge beam thin-walled profile panel of claim 3, wherein: after two adjacent hollow boundary beam thin-wall section plates are mutually spliced, a welding groove (6) with the angle of 60-80 degrees is formed between the inserting pieces (4).

5. The hollow edge beam thin-walled profile panel of claim 4, wherein: and the bracket (7) for installing and connecting the underframe floor is arranged at the connecting vertex of the 2 adjacent inclined rib plates (3).

6. The hollow edge beam thin-walled profile panel of claim 5, wherein: the continuous inclined rib plates (3) between the inner plate (1) and the outer plate (2) divide the inner cavity of the section bar plate into a plurality of triangles.

7. The hollow edge beam thin-walled profile panel of claim 6, wherein: in the triangle divided by the continuous inclined rib plates (3), the length proportion of the adjacent inclined rib plates (3) is between 1: 0.8-1.3.

8. The hollow edge beam thin-walled profile panel of claim 7, wherein: the outer surface of the outer plate (2) is a circular arc surface.