Rail train and train body thereof

Abstract

The invention discloses a rail train and a train body thereof. The train body mainly comprises a box body structure formed by connecting an arc roof profile, an air conditioner plate profile, a side wall plate profile, a bottom frame floor profile, a door vertical column bending profile, a roof camber beam bending profile, an overall door corner, roof side beam profiles and bottom frame side beamprofiles. A pulling buffering structure is mounted at the bottom of the bottom frame floor profile. The roof side beam profiles, the bottom frame side beam profiles, the arc roof profile, the air conditioner plate profile, the side wall plate profile, the bottom frame floor profile and the pulling buffering structure are made of nano-ceramic aluminum alloy materials. The problem that further weight reduction of a traditional aluminum alloy vehicle body is difficult due to the limitation of the strength of materials is solved, and the durability and the reliability are not affected.

Description

technical field [0001] The invention relates to a rail train and its car body, and belongs to the technical field of rail transit vehicle car body structure. Background technique [0002] With the development of modern science and technology, the performance requirements for light weight, fire safety and vibration comfort of rail train vehicles have become more stringent. At present, the most widely used materials for rail train bodies are carbon steel, stainless steel, and aluminum alloy. Carbon steel has good strength and plasticity, but the density is too high, and because it is easy to be corroded, it needs to leave a certain margin in thickness, so it is not the first choice for lightweight structures; stainless steel has high strength, but the density is still not light enough At the same time, its arc welding performance is not good, and resistance spot welding needs to be used in a large range, resulting in poor sealing performance of trains; while traditional alumi...

AI Technical Summary

Problems solved by technology

However, its yield strength is only about 215MPa, and the minimum plate thickness is limited due to low extrusion fluidity, which affects its further lightweight

Due to its high strength and good comprehensive formability, 7XXX series aluminum alloys were once the key research objects to replace 6005A aluminum alloys, but due to their stress corrosion sensitivity, their use is temporarily restricted

However, the further lightweight of the car body will often lead to thinner profile ribs and lower density. If traditional arc welding is used in a large area, it will bring great difficulties to the welding deformation control of the car body manufacturing process.

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