Vehicle body structure for railway vehicle and forming method

Abstract

The invention relates to a vehicle body structure for a railway vehicle. The side walls and the vehicle top are integrated in the vehicle body; the vehicle body is in the form of a sandwich structure with paper honeycomb core material filled between inner and outer carbon fiber coverings; the inner and outer carbon fiber coverings of the vehicle body, including the intersecting areas of the side walls of the vehicle body and the vehicle top, all have carbon fiber pre-soaked material continuous paving forming structures; overlapping areas are arranged at the edge of all paving layers of the carbon fiber pre-soaked materials. According to the invention, the side walls and the vehicle top in the vehicle body structure are integrated, so that the overall size precision of the vehicle body structure is increased and the assembling technical process of the vehicle body structure is simplified; connecting welding lines between the side walls and the vehicle top in the traditional metal vehicle body can be effectively avoided; the influences of welding heat affected zone and residual stress can be eliminated; the overall strength and rigidity of the vehicle body structure can be increased; the weight of the vehicle body can be effectively reduced; compared with the traditional metal vehicle body structure, the vehicle body structure has the advantages that the weight reduction effect is obvious and the vehicle body structure can meet the design requirements for the lightweight vehicle body structure of the railway vehicle at present.

Description

technical field [0001] The invention belongs to the field of railway transportation, and in particular relates to a novel car body component integration technology for rail vehicles. Background technique [0002] The traditional rail vehicle body structure mainly adopts metal body, and the materials are generally carbon steel, stainless steel, aluminum alloy, etc. Due to the limitations of the processing size and shape of metal sheets or profiles, the traditional rail vehicle body structure is divided into several major components such as the underframe, side walls, roof, and end walls. Each part is processed by one or more pieces of metal material, and then the connection between several large parts is realized through welding process. Consequently, there are a large number of welds in conventional rail vehicle body structures. The welding operation is likely to cause large structural deformation, heat-affected zone in the weld area, and residual stress in the metal struc...

AI Technical Summary

Problems solved by technology

However, in the traditional structural design of rail vehicles, due to lack of confidence in the mechanical properties of new materials and lack of relevant design experience, the application of new materials in rail vehicles is limited to some secondary structures and non-load-bearing structures. The lightweight effect of the structure is not obvious

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