Shaft-mounted brake disc

Abstract

The invention discloses a shaft-mounted brake disc used for a rail traffic vehicle. The shaft-mounted brake disc comprises a disc body, a hub, space rings, sliding blocks, locating keys, spacers, bolts and nuts; the disc body comprises two friction rings, radiation ribs and a plurality of connecting claws, wherein the radiation ribs are placed in the radial direction of the friction rings and arranged in multiple circles from inside to outside and the connecting claws are placed on the inner circles of the friction rings and arranged in the peripheral direction; each connecting claw is provided with a radial disc body sliding block groove; each hub flange is provided with a radial hub upper sliding block groove; the sliding blocks are correspondingly arranged inside the disc body sliding block grooves and the hub upper sliding block grooves; after installation, the sliding block force transferring faces of the sliding blocks are matched with the force transferring faces of disc body sliding blocks and the force transferring faces of hub upper sliding blocks; each bolt sequentially penetrates through various bolt holes in a loose fit mode and is locked through the corresponding spacer and the corresponding nut; and the shaft-mounted brake disc is high in connection reliability and good in ventilation and heat dissipation performance.

Description

technical field [0001] The invention relates to a rail transit vehicle brake device, in particular to a 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 foundation braking device, the brake disc plays an important role in the braking process of the vehicle. [0004] During the braking process of the vehicle, when the basic braking device is applied, the brake caliper moves and pushes the brake pad to act on the brake disc. Through the friction between the brake disc and the brake pad, the kinetic energy of the vehicle is converted into frictional heat energy and released. Thereby achieving vehicle braking. [0005] Durin...

AI Technical Summary

Problems solved by technology

[0007] The Chinese patent application number is 201020546642.9, and the document titled "Brake Disc Especially for Rail Vehicles" discloses that the brake disc can make the radial restraint effect of the hub on the disc body to a certain extent by adding a sliding rod on the connecting claw. is released, but the transmission of its circumferential braking torque is still only achieved through bolted connections

During the long-term service of the brake disc, the cooling ribs of the outer ring are prone to cracks and fracture failures under the action of alternating tensile stress, which affects product use and driving safety

[0009] The Chinese patent application number is 201220450881.3, and the literature titled "A New Brake Disc with Strong Heat Dissipation for High-speed Trains" discloses that a brake disc is provided with several symmetrical powder discharge grooves in the axial direction of the friction surface. The arranged cooling ribs are provided with ventilation slots that run through the cooling ribs and the powder discharge grooves. The design requires high machining requirements, and the process is difficult to realize, and the powder discharge grooves on the panel surface also increase the stress source on the panel surface.

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