Skirt plate structure of rail traffic vehicle body and forming method of skirt plate structure

A rail transit vehicle and molding method technology, applied in the field of composite material structure molding technology, can solve problems such as easy deformation, unstable size, and difficult molding, and achieve the effects of weight reduction, saving molding time and cost, and reducing internal stress

Active Publication Date: 2018-01-09
AEROSPACE RES INST OF MATERIAL & PROCESSING TECH +1
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  • Summary
  • Abstract
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  • Application Information

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Problems solved by technology

[0003] The rail transit car body skirt is located under the side wall of the car body. Because the car body skirt has a certain curved shape and a large size, it is difficult to form, and it is easy to deform during the manufacturing process and the size is unstable. Aluminum alloy material

Method used

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  • Skirt plate structure of rail traffic vehicle body and forming method of skirt plate structure
  • Skirt plate structure of rail traffic vehicle body and forming method of skirt plate structure
  • Skirt plate structure of rail traffic vehicle body and forming method of skirt plate structure

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specific Embodiment

[0112] The embodiment of the present invention provides a method for forming the skirt plate of a sandwich structure of a monorail vehicle, such as figure 1 As shown, the overall size of the sandwich structure skirt plate is 1400×2400mm, and the section is bow-shaped, and the method includes:

[0113] Step (1), making a formwork according to the design size of the skirt plate of the sandwich structure;

[0114] Step (2), use a surface density of 300g / m 2 The prepreg is laminated on the mould, the thickness of the laminate is 40mm, and it is cured in an autoclave to obtain a reinforcing rib block, which is cut into a curved reinforcing rib with a width of 80mm. The prepreg uses halogen-free flame-retardant epoxy resin as the resin matrix, with a density of 200g / m 2 The glass cloth is used as the reinforcing fiber, and the performance of the composite material meets the HL3 grade of the EN45545 standard; there are 3 reinforcing ribs obtained, and the accuracy of the shape and ...

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Abstract

An embodiment of the invention provides a skirt plate structure of a rail traffic vehicle body and a forming method of the skirt plate structure, and belongs to the technical field of composite structure forming. The skirt plate structure of the rail traffic vehicle body comprises an outer skin layer, a honeycomb core layer, an inner skin layer and a support frame, wherein upper and lower surfacesof the honeycomb core layer are connected with the outer skin layer and the inner skin layer respectively, a mounting groove is formed in the inner skin layer and the honeycomb core layer, the support frame is located in the mounting groove and connected with the outer skin layer, the outer skin layer and the inner skin layer are made of a composite material, and the support frame is made of a metal material or a composite material. The skin layers are made of the composite material, uniform radian of the inner and outer skin layers is realized by the honeycomb core, and surface precision ofthe large curved skirt plate structure is guaranteed; mechanical strength of the large skirt plate structure is guaranteed by the support frame; with adoption of the composite materials and a hollow structure, the weight of the large skirt plate structure is reduced by about 20%, and the requirement for the light vehicle body is met.

Description

technical field [0001] The invention relates to a car body skirt plate of a rail transit vehicle and a forming method thereof, and belongs to the technical field of composite material structure forming technology. Background technique [0002] With the development of rail transit vehicle manufacturing technology, the demand for light weight of the vehicle body is becoming more and more urgent. Fatigue performance, low notch sensitivity and good damping performance can effectively improve the safety, reliability and comfort of vehicle operation. If composite materials are used as car body skirts, it can meet the lightweight requirements of car bodies. [0003] The rail transit car body skirt is located under the side wall of the car body. Because the car body skirt has a certain curved shape and a large size, it is difficult to form, and it is easy to deform during the manufacturing process and the size is unstable. Aluminum alloy material is the main material. [0004] The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B9/00B32B9/04B32B17/04B32B17/12B32B3/12B32B27/02B32B27/34B32B7/12B32B3/08B61D17/08
Inventor 栾贻浩张毅刘千周宇樊孟金凌辉
Owner AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
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