CN112202121A - Composite material side wall wire casing structure of railway vehicle and manufacturing method thereof - Google Patents

Abstract

The invention provides a composite material side wall wire casing structure of a railway vehicle, which is characterized in that: the composite material side wall wire casing structure adopts carbon fiber prepreg to be continuously paved and adhered and molded by high-temperature pressurization and curing, is suitable for being connected with a carbon fiber composite material vehicle body, and has small structural deformation in the molding process; can effectual reduction wire casing structure weight, it is obvious than traditional metal automobile body wire casing structure's the effect of subtracting weight, agree with present rail vehicle about the lightweight design demand of automobile body structure.

Description

Composite material side wall wire casing structure of railway vehicle and manufacturing method thereof

Technical Field

The invention relates to a side wall structure of a railway vehicle body, in particular to a composite material wire groove structure arranged in a side wall and a manufacturing method thereof.

Background

The existing railway vehicle body structure mainly adopts metal materials, such as stainless steel, aluminum alloy and the like. The roof electrical equipment and the under-vehicle electrical equipment need to be connected by cables. In order to guarantee the safety and the arrangement standardization of the cables, a metal wire groove needs to be welded on the side wall metal structure, so that the cables can smoothly pass through the metal wire groove, and the normal operation of electrical equipment is guaranteed.

With the increasing demand for light weight of railway vehicles, the adoption of composite material vehicle body structures has become an important means for reducing the weight of vehicle bodies. For a composite material vehicle body structure, the traditional metal wire slot is difficult to realize effective connection, and is not beneficial to the light-weight design of the whole vehicle, so that the wire slot structure which can realize effective connection and light weight with the composite material vehicle body structure needs to be developed.

Disclosure of Invention

The invention aims to provide a novel side wall wire groove structure which can ensure normal running of a cable, can be effectively connected with a side wall of a composite material vehicle body and meets the requirement of light weight of the vehicle body.

In order to achieve the purpose, the invention provides a composite material side wall wire casing structure of a railway vehicle, which is characterized in that: the cross section of the composite material wire slot is shaped like Contraband, the composite material wire slot is arranged along the height direction of the side wall of the vehicle body, a cable penetrates through the cavity area, the open end of the wire slot is connected with the outer skin of the composite material side wall, the closed end of the wire slot is connected with the inner skin of the composite material side wall, and a foam core material is laid between the inner skin and the outer skin and around the wire slot.

Furthermore, the wire grooves, the inner skin, the outer skin and the surrounding foam core materials of the side wall are integrally cured, and effective connection is achieved.

Furthermore, the opening ends of the wire grooves are respectively provided with vertical flanges which are respectively arranged leftwards and rightwards, effective connection is realized between the flanges and the outer skin part of the side wall, and the connection strength of the wire groove structure and the side wall structure of the vehicle body is ensured.

Further, interior covering is a groove structure with wire casing connection area, and in the blind end embedding recess of wire casing, the area of contact of increase and interior covering improved joint strength.

Furthermore, the surface of the wire groove structure is provided with a fabrication hole, so that subsequent wiring operation is facilitated.

Furthermore, the wire groove is formed by paving and solidifying a plurality of layers of carbon fibers in the mold.

Further, the wire casing is formed by laying and solidifying 6 layers of carbon fibers.

The manufacturing method of the composite side wall wire casing forming structure comprises the following steps:

1) blanking: cutting carbon fiber prepreg;

2) paving and pasting the wire grooves: paving the surface of the online groove die layer by layer, wherein the paving sequence is two layers of RC 410/two layers of PP XC 410/two layers of PP RC410, and the paving angle is 90 degrees/45 degrees/90 degrees in sequence;

3) and (3) curing the wire grooves: putting the wire groove into an oven for curing;

4) paving and curing the outer skin of the side wall: paving outer skin on the surface of the side wall mold layer by layer, and then putting the side wall mold into an oven for curing;

5) assembling the wire grooves: positioning the cured wire casing on the cured side wall outer skin through a tool, laying a foam core material around the wire casing, and putting the wire casing and the foam core material into an oven for curing;

6) paving and curing the inner skin of the side wall: taking out after the curing in the step 5), paving the side wall inner skin on the foam core material and the surface of the wire groove layer by layer, and then putting the foam core material and the surface of the wire groove into an oven for curing;

7) processing a process hole: after the wire grooves are well solidified, fabrication holes are machined in the surfaces of the wire grooves, so that subsequent wiring operation is facilitated.

The composite side wall wire casing structure disclosed by the invention is formed by continuously paving and sticking carbon fiber prepreg and carrying out high-temperature pressurization curing, is suitable for being connected with a carbon fiber composite vehicle body, and has small structural deformation in the forming process; can effectual reduction wire casing structure weight, it is obvious than traditional metal automobile body wire casing structure's the effect of subtracting weight, agree with present rail vehicle about the lightweight design demand of automobile body structure.

Drawings

FIG. 1 is a schematic view of a cured composite material trunking structure;

fig. 2 is a sectional view taken along line a-a of fig. 1.

Detailed Description

Referring to fig. 1 and 2, the cross section of the composite side wall wire casing 1 is shaped like Contraband with a flanging, and the cavity area 2 is used for the subsequent passing of cables. The flanging is two vertical flanging which are positioned at the open end of the wire slot leftwards and rightwards, the wire slot 1 is formed by laying and curing 6 layers of carbon fibers on the surface of a wire slot die, the cured wire slot 1 is positioned on the outer skin 5 of the side wall by utilizing the flanging, then the foam core material 6 is laid around the wire slot, the cured wire slot is placed in an oven together after being laid, after curing, the inner skin 7 of the side wall is laid on the surfaces of the foam core material 6 and the wire slot 1, the connecting area of the inner skin and the wire slot is of a groove structure, the closed end of the wire slot is embedded into the groove, the contact area of the wire slot and the inner skin is. And laying an inner skin, and then putting the inner skin into an oven for curing. Through solidification between the composite materials, the effective connection between the wire slot and the side wall of the composite material is realized, and the connection strength between the wire slot and the side wall structure of the vehicle body is ensured. After the solidification is finished, a fabrication hole 4 is processed on the surface, so that the subsequent wiring operation is facilitated.

The specific manufacturing method is as follows:

1. blanking: cutting carbon fiber prepreg;

2. paving and pasting the wire grooves: paving and pasting the surface of the online groove die layer by layer, wherein the paving sequence is two layers of RC 410/two layers of PP XC 410/two layers of PP RC410, and the paving angle is 90 degrees/45 degrees/90 degrees.

3. And (3) curing the wire grooves: putting the wire groove into an oven for curing;

4. paving and curing the outer skin of the side wall: paving outer skin on the surface of the side wall mold layer by layer, and then putting the side wall mold into an oven for curing;

5. assembling the wire grooves: positioning the cured wire casing on the cured side wall outer skin through a tool, laying a foam core material around the wire casing, and putting the wire casing and the foam core material into an oven for curing;

6. paving and curing the inner skin of the side wall: taking out after the curing in the step 5), paving the side wall inner skin on the foam core material and the surface of the wire groove layer by layer, and then putting the foam core material and the surface of the wire groove into an oven for curing;

7. processing a process hole: after the wire grooves are well solidified, fabrication holes are machined in the surfaces of the wire grooves, so that subsequent wiring operation is facilitated.

The composite wireway structure has an overall length of about 2482mm, a minimum width of about 212mm, a maximum width of about 554mm, a depth of 807mm and a wall thickness of 3 mm. The wire slot structure materials are all carbon fiber prepreg materials provided by Gureite (Tianjin) composite material company Limited, and are formed by adopting an autoclave process, the layering sequence is two layers of RC 410/two layers of PP XC 410/two layers of PP RC410, and the laying angle is 90 degrees/45 degrees/90 degrees in sequence.

Claims (8)

1. The utility model provides a rail vehicle combined material side wall wire casing structure which characterized in that: the cross section of the composite material wire slot is shaped like Contraband, the composite material wire slot is arranged along the height direction of the side wall of the vehicle body, a cable penetrates through the cavity area, the open end of the wire slot is connected with the outer skin of the composite material side wall, the closed end of the wire slot is connected with the inner skin of the composite material side wall, and a foam core material is laid between the inner skin and the outer skin and around the wire slot.

2. The composite side wall trunking structure of a railway vehicle of claim 1 further comprising: the wire grooves, the inner skin, the outer skin and the surrounding foam core materials of the side wall are solidified into a whole, and effective connection is achieved.

3. The composite side wall trunking structure of a railway vehicle of claim 1 further comprising: the opening ends of the wire grooves are respectively provided with vertical flanges which are respectively arranged leftwards and rightwards, effective connection is realized between the flanges and the outer skin part of the side wall, and the connection strength of the wire groove structure and the side wall structure of the vehicle body is ensured.

4. The composite side wall trunking structure of a railway vehicle of claim 1 further comprising: the connection area of the inner skin and the wire groove is of a groove structure, and the closed end of the wire groove is embedded into the groove.

5. The composite side wall trunking structure of a railway vehicle of claim 1 further comprising: the surface of the wire groove is provided with a fabrication hole.

6. The composite side wall trunking structure of a railway vehicle of claim 1 further comprising: the wire groove is formed by paving and solidifying a plurality of layers of carbon fibers in a mold.

7. The composite side wall trunking structure of a railway vehicle of claim 6 further comprising: the wire casing is formed by laying and solidifying 6 layers of carbon fibers.

8. A manufacturing method of a composite material side wall wire casing structure of a railway vehicle is characterized by comprising the following steps:

1) blanking: cutting carbon fiber prepreg;

2) paving and pasting the wire grooves: paving the surface of the online groove die layer by layer, wherein the paving sequence is two layers of RC 410/two layers of PP XC 410/two layers of PP RC410, and the paving angle is 90 degrees/45 degrees/90 degrees in sequence;

3) and (3) curing the wire grooves: putting the wire groove into an oven for curing;

4) paving and curing the outer skin of the side wall: paving outer skin on the surface of the side wall mold layer by layer, and then putting the side wall mold into an oven for curing;

5) assembling the wire grooves: positioning the cured wire casing on the cured side wall outer skin through a tool, laying a foam core material around the wire casing, and putting the wire casing and the foam core material into an oven for curing;

6) paving and curing the inner skin of the side wall: taking out after the curing in the step 5), paving the side wall inner skin on the foam core material and the surface of the wire groove layer by layer, and then putting the foam core material and the surface of the wire groove into an oven for curing;

7) processing a process hole: after the wire grooves are well solidified, fabrication holes are machined in the surfaces of the wire grooves, so that subsequent wiring operation is facilitated.

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