Carriage covering composite material with silkworm cocoon-imitating winded and braided structure and preparation method thereof

Abstract

The invention relates to a carriage covering composite material with a silkworm cocoon-imitating winded and braided structure and a preparation method thereof. The carriage covering comprises six sets of yarn systems penetrating the composite material in circumferential, radial and axial directions. Characteristics are that: knitting yarn is arranged at every layers uniformly along the axial direction of a mandrel; winding yarn is winded layer by layer along the circumferential direction of the mandrel, and the knitting yarn and the winding yarn are interweaved layer by layer, so that the layers are overlapped with each other to form an interlocking structure; reinforcing rib yarn of the axial and circumferential directions is sandwiched among the winded and braided layers; and the fabric is penetrated by stitching yarn of the circumferential and axial directions along the circumferential and axial directions, and all the layers are connected to be a whole. The composite material is prepared according to winding and braiding principles of silkworm cocoons. The preparation method comprises following steps: (1) preparing the mandrel; (2) arranging the yarn; (3) winding and braiding; and (4) assembling and fastening. Carriage covering composite material processes excellent performances, such as high integrity, light weight, excellent wrinkle resistance and impact resistance. The composite material can be applied for locomotives and carriages of aerodynamic aerotrains with simulated wings.

Description

technical field [0001] The invention relates to a compartment skin and its manufacturing method, in particular to a composite material compartment skin imitating silkworm cocoon winding and braiding structure and its manufacturing method, which is applied to the locomotive and each of the aerodynamic suspension trains with imitated wings In a carriage, it belongs to the field of engineering material preparation. Background technique [0002] The trend of modern railway is to pursue high speed, high comfort rate and high economic benefit. Recently, Jiang Lei et al. (Chinese Patent: 201110209112.4, Chinese Patent: 201110242739, Chinese Patent: 201110242755.9) have proposed an aerodynamic suspension train with imitated wings. Imitation of the wing structure. The airflow that moves relative to the train acts on the imitation wing structure to generate a lifting force, thereby reducing the pressure of the train on the rails. The skin structure of the carriage plays a vital rol...

AI Technical Summary

Problems solved by technology

At present, the car skin structure of high-speed trains generally adopts metal materials and FRP materials, such as galvanized steel plates, aluminum alloy materials, and FRP plates. The existing skin structure will have pores and poor welds during welding with the steel skeleton. The skin is prone to defects such as bubbles, which makes the train prone to brittle fracture, damage and corrosion during high-speed running

At the same time, due to the heavy weight of metal materials, it also seriously affects the improvement of the speed of high-speed trains in operation.

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