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Lightweight environmental-friendly high-speed train middle roof plate and preparation method thereof

A high-speed train and environment-friendly technology, applied in the field of rail transit, can solve problems such as poor lightweight effect, poor environmental protection, and human health hazards, and achieve the effects of enhanced bonding strength, good dimensional consistency, and improved overall strength

Inactive Publication Date: 2019-08-09
CRRC TANGSHAN CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] One is poor environmental protection
FRP is formed by the reaction of unsaturated resin and methyl ethyl ketone peroxide. During the reaction, a large amount of aldehyde and ketone gases harmful to the human body will be produced, and the debris formed by the broken glass fiber cannot be decomposed after entering the human body, which will cause harm to human health. hazard; moreover, the FRP material itself cannot be degraded and will eventually become waste that damages the environment
[0005] Second, the lightweight effect is poor
Therefore, the weight of the middle roof made of glass fiber reinforced plastic base material is relatively heavy, thereby increasing the overall weight of the train. The increase in the overall weight of the train will lead to the energy consumption of the train at high speed.

Method used

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  • Lightweight environmental-friendly high-speed train middle roof plate and preparation method thereof
  • Lightweight environmental-friendly high-speed train middle roof plate and preparation method thereof
  • Lightweight environmental-friendly high-speed train middle roof plate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] Such as Figures 1 to 8 Shown is the embodiment of a kind of lightweight environment-friendly type high-speed train mid-roof of the present invention, comprises the hemp fiber composite mid-roof 1 that is used as the mid-roof main body and has arc-shaped surface, is used for carrying out described hemp fiber composite mid-roof 1 Reinforced metal ribs 2, the hemp fiber composite top plate 1 includes a front layer 3, a middle layer 4 and a back layer 5 that are sequentially laminated and connected, and the middle layer 4 is made of a mixed fiber of hemp fiber and polypropylene fiber Hemp fiber felt layer, the front layer 3 and the back layer 5 are non-woven fabric layers, the metal reinforcement 2 is connected with the back layer 5 of the hemp fiber composite middle top board 1; the hemp fiber composite middle top board The side of 1 is provided with a step 6 for butting two adjacent top boards 1 of the hemp fiber composite.

[0070] The density of the hemp fiber composi...

Embodiment 2

[0087] Such as Figures 1 to 8 Shown is the embodiment of the preparation method of a kind of light-weight environment-friendly type high-speed train roof, comprises the steps:

[0088] The first step, prefabricated hemp fiber composite board;

[0089] The second step, prefabricated metal reinforcement 2;

[0090] The third step is to use the forming die to locate the metal reinforcement rib 2 in the forming die, and to preheat simultaneously with the forming die; A positioning groove 14 is excavated on the forming surface 12, and the metal reinforcing rib 2 is embedded in the positioning groove 14 through clearance fit; wherein, the forming die is provided with a top plate for pressing out the hemp fiber composite 1 the boss 15 of the step 6 for side docking;

[0091] The fourth step is to heat and soften the hemp fiber composite plate, and then put it into the forming die, and press the metal reinforcement 2 and the hemp fiber composite plate together through the forming ...

Embodiment 3

[0113] The density of the top plate 1 in the hemp fiber composite made by adopting above-mentioned embodiment 1, 2 is 0.8g / cm 3 , the metal rib 2 adopts a density of 2.7g / cm 3 aluminum alloy profile reinforcing rib, and the volume ratio of the aluminum alloy profile reinforcing rib and the hemp fiber composite middle roof 1 is 1:5 through structural design, then the average density of the middle roof=weight÷volume=(1× 2.7+5×0.8)÷(1+5)=1.12g / cm 3 .

[0114] With the prior art and with iron metal reinforcement (density 7.8g / cm 3 ) of molded FRP (density 2.0g / cm 3 ) compared with the top plate, where the average density of the top plate ≥ weight ÷ volume = (1 × 7.8 + 5 × 2.0) ÷ (1 + 5) = 2.97g / cm 3 .

[0115] It can be seen that, compared with the molded FRP mid-roof with iron metal ribs, the weight of the fiber composite mid-roof 1 and metal rib 2 integrally formed in this embodiment is greatly reduced.

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Abstract

The invention relates to the technical field of rail transit, and discloses a lightweight environmental-friendly high-speed train middle roof plate and a preparation method thereof. The lightweight environmental-friendly high-speed train middle roof plate comprises fibrilia composite middle roof plate bodies serving as a middle roof plate main body and provided with arc-shaped faces, and metal reinforcing ribs for reinforcing the fibrilia composite middle roof plate bodies, each fibrilia composite middle roof plate body comprises a front face layer, a middle layer and a back face layer which are sequentially connected in an overlapped mode, the middle layers are fibrilia felt layers made of composite fiber of fibrilia and polypropylene fiber, the front face layers and the back face layersare both non-woven fabric layers, the metal reinforcing ribs are connected with the back face layers of the fibrilia composite middle roof plate bodies, and steps used for mutual butting connection between every two adjacent fibrilia composite middle roof plate bodies are arranged on the side faces of the fibrilia composite middle roof plate bodies. The high-speed train middle roof plate is lightweight, and environmental protection performance of the middle roof plate is further improved.

Description

technical field [0001] The invention relates to the technical field of rail transit, in particular to a light-weight and environment-friendly high-speed train middle roof and a preparation method thereof. Background technique [0002] At present, interior panel components such as the mid-roof for high-speed rail transit trains are made of FRP. In order to ensure the strength of the FRP mid-roof, metal reinforcement ribs are usually connected to the back of the FRP mid-roof and fixed by bolts or screws. . [0003] There are the following problems in the above-mentioned mid-roof made of glass fiber reinforced plastic substrate: [0004] One is poor environmental protection. FRP is formed by the reaction of unsaturated resin and methyl ethyl ketone peroxide. During the reaction, a large amount of aldehyde and ketone gases harmful to the human body will be produced, and the debris formed by the broken glass fiber cannot be decomposed after entering the human body, which will c...

Claims

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Application Information

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IPC IPC(8): B61D17/12B32B9/02B32B5/02B32B9/04B32B5/26B32B5/08B32B5/06B32B27/32B32B27/02B32B27/06B32B27/12B32B3/08B32B3/06B32B7/08B32B37/10B32B37/06B32B38/00D04H1/541B29C51/08B29C51/12
CPCB29C51/082B29C51/12B32B3/06B32B3/08B32B5/02B32B5/022B32B5/06B32B5/08B32B5/26B32B7/08B32B33/00B32B37/06B32B37/10B32B38/00B32B2262/0253B32B2262/065B32B2262/14B32B2307/50B32B2307/70B32B2605/00B61D17/12D04H1/541
Inventor 庄理少沈立伟熊力孟凡帅武娟娟杨帅黄德敏马纪军范乐天
Owner CRRC TANGSHAN CO LTD
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