Low-cost carbon fiber composite empty rail car body and its manufacturing process

Abstract

The invention discloses a structure and manufacturing process of a low-cost carbon fiber composite material empty rail car body, which belongs to the technical field of application of composite materials on rail vehicles, and includes car body side walls, and both ends of the car body side walls are assembled The end wall is connected, the inner top surface and the inner bottom surface of the side wall of the car body are respectively assembled and connected with a top frame and the bottom frame, and the outer top surface of the side wall of the car body is assembled and connected with a ceiling, and bogie mounting holes are opened on the ceiling; The side wall and the end wall of the car body all include a stiffener skeleton, an inner skin and an outer skin, and the grid of the stiffener skeleton is filled with sandwich foam blocks; the roof includes a sandwich laminate, an upper skin and a lower skin skin; the top frame, the bottom frame, the rib skeleton, the inner skin, the outer skin, the upper skin and the lower skin are all integrally molded by carbon fiber composite materials; the inside of the rib skeleton is filled with sandwich foam, The purpose of meeting the function and structure of the bearing mode of the suspended car body is achieved under the premise of light weight of the car body.

Description

technical field [0001] The invention belongs to the technical field of application of composite materials on rail vehicles, in particular to the field of suspended air rail vehicles, in particular to a low-cost carbon fiber composite material air rail car body and a manufacturing process. Background technique [0002] At present, domestic research on carbon fiber composite car bodies is still in its infancy. At this stage, composite materials are only used to replace some non-stressed parts. The existing standard EMU CFPR equipment compartment has realized the structural integration. Compared with Aluminum alloy structure, CFRP equipment compartment weight reduction of 35%, trains using this standard EMU CFPR equipment compartment have been shipped in June 2015. In December 2011, the 500km / h high-speed test vehicle completed in December 2011 adopted a carbon fiber composite material head cover. The cab of the Shanghai maglev train is the world's largest single-piece fibergl...

AI Technical Summary

Problems solved by technology

[0005] (1) Strictly speaking, the middle skeleton of the carbon fiber composite car body currently developed still adopts a fully welded aluminum alloy frame structure, not an all-carbon fiber composite car body, and there are problems such as deformation mismatch between non-metallic materials and metal materials. ;

[0006] (2) The weight loss of the existing full carbon fiber composite subway car body is not obvious, the cost is high, and the commercial operation is difficult;

At this stage, there is no carbon fiber composite body for the suspended empty rail car

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