Composite axle-mounted brake discs for high-speed trains

Abstract

The invention belongs to the technical field of train braking devices, and particularly relates to a high-speed train composite material shaft mounting brake disc. The high-speed train composite material shaft mounting brake disc comprises a flange hub, two steel frameworks, two carbon ceramic friction rings, a sliding block, a sleeve, a fastener and the like. The brake disc is composed of the friction rings made of carbon ceramic materials and the frameworks made of cast steel materials. The weight of the high-speed train composite material shaft mounting brake disc is about 1 / 3 of the weightof a traditional steel material brake disc. The unsprung weight of a high-speed train can be greatly reduced. Requirement of the high-speed train for light weight are met. The brake disc made of a carbon-ceramic composite material can bear larger braking energy, is suitable for high-speed trains with the speed of more than 350 km, and meets the requirement of the high-speed trains for speed increase. The friction rings are simple in structure and suitable for manufacturing the carbon-ceramic composite material. The friction rings are fixed to the steel frameworks through the sleeve and the sliding block. The steel frameworks are fixed to a wheel through a mature positioning pin and a fastener structure. The problem of fixing of a carbon-ceramic wheel disc and the wheel is solved.

Description

technical field [0001] The invention belongs to the technical field of train braking devices, and in particular relates to a high-speed train composite shaft-mounted brake disc. Background technique [0002] At present, the domestic high-speed train shaft-mounted brake disc is mainly composed of a disc body, a disc hub, a pressure ring and fasteners. The disc body is made of cast steel and is integrally cast; the disc hub has flange teeth (with bolt holes in the middle) distributed on the same circumference, and the disc hub is used to fix the brake disc on the axle; the pressure ring has a certain thickness Integral ring with multiple bolt holes distributed on equal circumference. When assembling the brake disc, align the bolt holes on the disc body, the disc hub and the pressure ring, then penetrate the bolts and nuts to fix them, and finally fix the brake disc on the axle by pressing. [0003] The existing cast steel disc body has high production efficiency and low prod...

AI Technical Summary

Problems solved by technology

However, carbon-ceramic composite materials have the characteristics of poor toughness and brittleness, which makes the existing structure of the disk body unable to be cast with carbon-ceramic composite materials. The new structure of the disk body must be designed according to the casting characteristics of carbon-ceramic composite materials. According to the new structure of the disc body, redesign the new connection method between the disc body and the hub

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