Combined rail transit wheel-mounted carbon-ceramic brake disc

Abstract

The combined rail transit wheel-mounted carbon-ceramic brake disc comprises a friction disc and a plurality of supporting blocks which are evenly arranged in the circumferential direction relative to the circle center of the friction disc, the friction disc and the supporting blocks are detachably assembled and connected, and heat dissipation channels are formed in gaps between the adjacent supporting blocks. And the middle part of each supporting block is provided with at least two radial heat dissipation grooves which are arranged along the radial direction and are communicated with each other. The combined type rail transit wheel-mounted carbon-ceramic brake disc has the advantages that the brake disc can be suitable for more speed grades, the heat dissipation area is increased, the heat dissipation rate is improved, the machining difficulty is reduced, energy consumption during running and braking of rail transit vehicles is reduced, and the operation and maintenance cost is saved.

Description

technical field [0001] The invention relates to the technical field of brake discs, in particular to a combined rail transit wheel-mounted carbon ceramic brake disc. Background technique [0002] At present, the brake discs used in rail transit vehicles are generally made of metal materials, although they have the characteristics of high technical maturity and low cost. It has been widely used at home and abroad, but there are problems that the heat of the brake disc cannot be dissipated in time and the heat accumulates during braking. And as the temperature of the brake disc increases, the friction coefficient of the brake disc decreases, and heat exhaustion occurs, resulting in a significant decrease in braking performance. Moreover, the metal brake disc is heavier, and the energy consumption during vehicle operation and braking is large. And because the existing wheel-mounted brake disc adopts an integral structure, the material utilization rate is not high. [0003] A...

AI Technical Summary

Problems solved by technology

However, since the heat dissipation structure of the existing carbon-ceramic wheel-mounted brake discs mostly follows the structure of ordinary brake discs, it is composed of dispersed reinforcing ribs, and the air ducts are small and scattered. It takes a long time to take away the heat, and it is easy to make the wheels and The temperature rise at the shaft connection is too fast, there is a risk of affecting the interference fit between the wheel and the shaft

Moreover, due to the complex structure, the processing cycle is long, the processing is difficult, and multiple tool changes and clamping are required during the processing, resulting in low production efficiency.

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