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Composite material contact bolster for rail transit vehicle and forming method thereof

A technology for rail transit vehicles and composite materials, which is applied in the field of composite material bolsters and their forming for rail transit vehicles, can solve problems such as stress concentration, and achieve the effects of reducing wall thickness, improving manufacturing efficiency, and reducing noise.

Active Publication Date: 2020-08-14
AEROSPACE RES INST OF MATERIAL & PROCESSING TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Through structural design to meet its mechanical performance requirements, through the innovation of forming technology, it solves the difficulty of forming the air chamber and overcomes the problem of stress concentration on the edge of the inner wall of the air chamber. The combination of structural design and forming technology of the present invention realizes the connection of composite materials to the corbel. Composite Lightweight

Method used

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  • Composite material contact bolster for rail transit vehicle and forming method thereof
  • Composite material contact bolster for rail transit vehicle and forming method thereof
  • Composite material contact bolster for rail transit vehicle and forming method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] A composite material connecting corbel for a rail transit vehicle, the connecting corbel includes an upper wall plate, a lower wall plate and an air chamber, the air chamber includes a main structure and a cladding layer composed of 27 structural units arranged, the main structure is three layers, Such as Figure 1-3 As shown, the cladding layer is wound outside the main structure, and the air chamber is located between the upper wall plate and the lower wall plate; the structural unit is a prism with a top through hole, a bottom end through hole and a middle through hole (unit air chamber) , the inner diameter of the top through hole of the prism (unit air chamber) is smaller than the middle through hole, the inner diameter of the bottom through hole of the prism (unit air chamber) is smaller than the middle through hole, and the inner diameter of the top through hole of the prism (unit air chamber) is less than that of the prism The inner diameter of the bottom throug...

Embodiment 2

[0108] A composite material connecting corbel for a rail transit vehicle, the connecting corbel includes an upper wall plate, a lower wall plate and an air chamber, the air chamber includes a main structure composed of 30 structural units and a cladding layer, and the cladding layer is wound on the Outside the main structure, the air chamber is located between the upper wall plate and the lower wall plate; the structural unit is a prism (unit air chamber) with a top through hole, a bottom end through hole and a middle through hole, and the top of the prism (unit air chamber) The inner diameter of the through hole is less than the middle through hole, the inner diameter of the bottom through hole of the prism (unit air chamber) is smaller than the middle through hole, and the inner diameter of the top through hole of the prism (unit air chamber) is the same as the inner diameter of the bottom through hole of the prism;

[0109] Adjacent structural units are bonded by epoxy adhes...

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Abstract

The invention relates to a composite material connecting sleeper beam for a rail transit vehicle and a forming method thereof, and belongs to the technical field of composite material design and process for rail transit. Through a hollow structure design, the connecting sleeper beam has high compression bearing capacity while can be used as a pressure container; and the connecting sleeper beam iscapable of bearing a working pressure of 6 bar. By adopting the design of cell combination, the integral rigidity can be improved, and the bearing capacity and the stress bearing capacity of the sleeper beam can be improved. All unit cells communicate with each other by drilling, so that the sleeper beam plays a role of a good pressure container with the volume of the inner cavity of the sleeper beam reaching by 200 L. The connecting sleeper beam adopts a composite material and the hollow structure, so that the weight of the sleeper beam is reduced by 30% or more compared with that of a metalmaterial, and the requirement of light weight of the rail transit vehicle is met.

Description

technical field [0001] The invention relates to a composite material connecting bolster for rail transit vehicles and a forming method thereof, and belongs to the technical field of composite material design and technology for rail transit. Background technique [0002] The contact bolster is located between the bogie and the carriage. The function of the bolster is to connect the car body and the bogie, and mainly bear and transmit the force of the car body and the bogie. The corbel is connected to the car body through bolts, and connected to the frame through air springs and traction devices. The anti-roll torsion bar and anti-snake shock absorber are all connected to the corbel and frame through corresponding supports and bolts. At the same time, the corbel needs to be used as a pressure vessel to store compressed air for braking. The existing bogie connecting bolster is made of metal material, and its own weight exceeds 500kg. Due to the high rigidity of the metal mater...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B61F5/50B29C70/34
CPCB29C70/342B61F5/50
Inventor 栾贻浩左小彪金鑫周宇付平俊蒋文革
Owner AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
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