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Light environment-friendly high-speed train side top plate and preparation method thereof

A high-speed train and side roof technology, applied in the field of rail transit, can solve the problems of inability to be decomposed, poor lightweight effect, poor environmental protection, etc., and achieve the effects of overcoming poor contact, enhancing bonding strength, and improving overall strength.

Inactive Publication Date: 2019-08-16
JIANGYIN YANLI AUTOMOBILE DECORATIVE PARTS +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 side roof plate 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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  • Light environment-friendly high-speed train side top plate and preparation method thereof
  • Light environment-friendly high-speed train side top plate and preparation method thereof
  • Light environment-friendly high-speed train side top plate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] Such as Figures 1 to 10 Shown is the embodiment of a kind of lightweight environment-friendly type high-speed train side roof of the present invention, comprises as side roof main body and has the hemp fiber composite side roof 1 with arc-shaped surface, is used for carrying out described hemp fiber composite side roof 1 Reinforced metal ribs 2, the hemp fiber composite side roof 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 The hemp fiber felt layer, the front layer 3 and the back layer 5 are both non-woven fabric layers, and the metal reinforcement 2 is connected to the back layer 5 of the hemp fiber composite side top plate 1 .

[0074] The hemp fiber composite side roof in the present embodiment has a density of 0.8g / cm3, compared with a density of 2g / cm3 molded glass fiber reinforced plastics, and its weight has dro...

Embodiment 2

[0093] Such as Figures 1 to 10 Shown is a kind of embodiment of the preparation method of light-weight environment-friendly type high-speed train side roof, comprises the steps:

[0094] The first step, prefabricated hemp fiber composite board;

[0095] The second step, prefabricated metal reinforcement;

[0096] The third step, using the forming die 15, the metal reinforcing rib 2 is positioned in the forming die 15, and preheated simultaneously with the forming die 15; A positioning groove 17 is excavated on the forming surface 19 on the back, and the metal reinforcing rib 2 is embedded in the positioning groove 17 through clearance fit;

[0097] The fourth step is to heat and soften the hemp fiber composite plate, and then put it into the forming die 15, and press the metal reinforcement 2 and the hemp fiber composite plate together through the forming die 15 to form a lightweight and environmentally friendly high-speed train side roof Wherein, the thickness of the hemp...

Embodiment 3

[0119] The density of the hemp fiber composite side top plate 1 that adopts above-mentioned embodiment 1,2 to make 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 side roof is 1:10 through structural design, then the average density of the side roof=weight÷volume=(1×2.7 +10×0.8)÷(1+10)=0.97g / cm 3 .

[0120] 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 side roof, the average density of the side roof ≥ weight ÷ volume = (1 × 7.8 + 10 × 2.0) ÷ (1 + 10) = 2.53g / cm 3 .

[0121] It can be seen that, compared with the molded glass fiber reinforced plastic side roof with iron metal ribs, the weight of the side roof integrated with the fiber composite side roof and metal ribs in this embodiment is greatly reduced.

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Abstract

The invention relates to the technical field of rail traffic, and discloses a light environment-friendly high-speed train side top plate and a preparation method thereof. The light environment-friendly high-speed train side top plate comprises a bast fiber composite side top plate serving as a side top plate main body and provided with arc-shaped faces, and metal reinforcing ribs used for reinforcing the bast fiber composite side top plate; the bast fiber composite side top plate comprises a front face layer, a middle layer and a back face layer which are sequentially connected in a superimposed mode, the middle layer is a bast fiber felt layer made of mixed fibers of bast fibers and polypropylene fibers, and the front face layer and the back face layer are both non-woven layers; and the metal reinforcing ribs are connected with the back face layer of the bast fiber composite side top plate. The preparation method of the side top plate comprises the process steps of bast fiber composite plate prefabricating, metal reinforcing rib prefabricating, preheating and forming die pressing. The lightweight and high strength of the high-speed train side top plate are achieved, and the environment-friendly performance of the side top plate is further improved.

Description

technical field [0001] The invention relates to the technical field of rail transit, in particular to a side roof plate of a light-weight and environment-friendly high-speed train and a preparation method thereof. Background technique [0002] At present, the side roof panels and other interior panel components used in high-speed rail transit trains are made of FRP. In order to ensure the strength of the FRP side roof panels, metal reinforcement ribs are usually connected to the back of the FRP side roof panels and fixed by bolts or screws. . [0003] There are the following problems in the above-mentioned side top plate made of glass fiber reinforced plastic base material: [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 decom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61D17/12B29C43/18
CPCB29C43/18B61D17/12
Inventor 沈立伟庄理少赫宏联王超群王彦卓马纪军孟凡帅武娟娟王广明
Owner JIANGYIN YANLI AUTOMOBILE DECORATIVE PARTS
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