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A rail transit vehicle body skirt structure and its forming method

A rail transit vehicle and molding method technology, applied in the field of rail transit vehicle body skirt structure and its molding, can solve the problem of inability to meet the use requirements of high-speed passenger cars, and achieve good stiffness, good thermal expansion matching performance, and good fatigue resistance. Effect

Active Publication Date: 2021-03-26
AEROSPACE RES INST OF MATERIAL & PROCESSING TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing aluminum alloy aprons can no longer meet the needs of high-speed passenger cars

Method used

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  • A rail transit vehicle body skirt structure and its forming method
  • A rail transit vehicle body skirt structure and its forming method
  • A rail transit vehicle body skirt structure and its forming method

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Embodiment Construction

[0039] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0040] see figure 1 and 2 , the embodiment of the present invention provides a rail transit vehicle body skirt structure, including an outer panel 1, a load-bearing frame 2, an inner panel 3 and a honeycomb core 4, such as image 3 As shown, the load-bearing frame 2 includes an upper end frame 21, a lower end frame 22 and a reinforcing rib 23 disposed between the upper end frame 21 and the lower end frame 22, and the load-bearing frame 2 is covered by a fiber-reinforced resin matrix composite material in the foam The core structure is made of material, the outer panel 1 and the inner panel 3 are both made of fiber-reinforced resin-based composite materials, and the load-bearing frame 2, the outer panel 1 and the inner panel 3 are stacked in sequence and fixedly connected, such as image 3 As shown, the load...

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Abstract

The invention provides a vehicle body skirt plate structure for a rail traffic vehicle and a shaping method thereof, and belongs to the technical field of composite material structure shaping. The skirt plate structure comprises an outer panel, a force bearing framework, an inner panel and honeycomb cores, wherein the force bearing framework comprises an upper end frame, a lower end frame and reinforcing strips arranged between the upper end frame and the lower end frame; the force bearing framework is made of a material of a structure coating a foam inner core by a fiber enhanced resin-basedcomposite material; the outer panel and the inner panel are made of fiber enhanced resin-based composite materials; the outer panel, the force bearing framework and the inner panel are sequentially overlapped and are fixedly connected; the force bearing framework separates a sandwich layer between the outer panel and the inner panel into a plurality of regions; the honeycomb cores are filled in the plurality of regions. The skirt plate structure has the characteristics of good rigidity, impact resistance, fatigue resistance and the like; meanwhile, the weight of the whole skirt plate can be reduced by about 30 percent.

Description

technical field [0001] The invention relates to a rail transit vehicle body skirt structure and a molding method thereof, belonging to the technical field of composite material structure molding. Background technique [0002] Rail transit body apron is located under the side wall of the car body. Because the body apron has a certain curved shape and a large size, it is difficult to form, easy to deform during the product manufacturing process, and the size is unstable. At present, the body apron is mainly made of Mainly aluminum alloy material. [0003] During the operation of a high-speed passenger car with a speed of 400 kilometers per hour, the stress conditions are more complex and the operating conditions are more severe. The body skirt needs to have higher rigidity, impact resistance, fatigue resistance and other characteristics. Weight loss puts forward higher requirements. Existing aluminum alloy skirts can no longer meet the needs of high-speed passenger cars. S...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B3/12B32B15/08B32B15/20B32B27/00B32B27/06B32B27/08B32B27/10B32B27/20B32B29/00B61D17/08
CPCB32B3/12B32B15/08B32B15/20B32B27/00B32B27/06B32B27/08B32B27/10B32B27/20B32B29/00B61D17/08
Inventor 栾贻浩李言金鑫李明唐占文周宇凌辉
Owner AEROSPACE RES INST OF MATERIAL & PROCESSING TECH