Brake disc and rail transit vehicle

Abstract

The invention discloses a brake disc and a rail transit vehicle. The brake disc includes a disc body, a disc hub, a space ring and a plurality of fastening pieces, wherein a disc body inner hole is formed in the disc body, and a plurality of disc body connecting claws extending toward the center are arranged on the circumferential wall of the disc body inner hole; disc body perforating holes are formed in the disc body connecting claws; a plurality of disc hub key grooves are formed in a flange of the disc hub, and one parts of the disc body connecting claws are contained in the disc hub key grooves; a disc hub perforating hole is formed in each disc hub key groove; a plurality of space ring perforating holes are formed in the space ring; and each fastening piece correspondingly penetratesthrough each disc hub perforating hole, each disc body perforating hole and each space ring perforating hole to fix the disc body, the disc hub and the space ring. Thus, when the rail transit vehicleis braked, if the fastening piece connection fails, the axial force formed by the fastening piece connection cannot overcome the braking force, and the side walls of the disc body connecting claws can be in contact with the side walls of the disc hub key grooves, so that the braking force transferred to the disc body can be transferred to the disc hub, and thus the operational reliability of a braking disc can be ensured.

Description

technical field [0001] The invention relates to the field of rail transit technology, in particular to a brake disc for a rail transit vehicle and a rail transit vehicle with the brake disc. Background technique [0002] With the rapid development of rail transit, disc brakes are more and more used in the basic braking of rail transit vehicles because of their advantages such as stable friction performance, large energy absorption, good heat dissipation performance and little damage to the tread compared with tread brakes. device. [0003] As an important part of the disc-shaped basic braking device, the brake disc presses the friction surface of the brake disc through the brake pads during the train braking process to achieve train braking, thereby ensuring the safe and stable operation of the train. The safe and reliable operation of trains plays an important role. [0004] During the braking process, the brake disc needs to bear the braking torque applied by the brake p...

AI Technical Summary

Problems solved by technology

[0005] In the related technology, the disc body, the spacer and the disc hub of the brake disc are only connected by bolts. Once the bolt connection fails, the braking torque cannot be transmitted, and the bolts will directly bear the shear force, and there is a risk of the bolts being sheared, resulting in braking The reliability of the moving disc is reduced, which affects the safety of rail transit vehicles

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