Connecting structure of wheel mounted type brake disc for rail transit vehicle

Abstract

The invention relates to a connecting structure of a wheel mounted type brake disc for a rail transit vehicle. The connecting structure comprises a wheel connecting part, a disc body and connecting screws. The disc body comprises an inner friction ring, an outer friction ring and a disc bowl which are integrated. The distance between the inner end face of the disc bowl and the inner friction surface of the inner friction ring is h. The disc bowl is connected with the inner friction ring through an arc-shaped center plate. Radiating ribs are arranged between the inner friction ring and the outer friction ring in the circumferential direction. The inner end face of the disc bowl is provided with an inner positioning hole matched with the wheel connecting part. The end of the wheel connecting part is arranged in the inner positioning hole of the disc bowl. The disc bowl is provided with at least three step holes, and the wheel connecting part is provided with step mounting holes corresponding to the step holes. Elastic cylindrical pins are arranged in the step holes of the disc bowl and the step mounting holes of the wheel connecting part. The connecting screws penetrate through the disc bowl and the elastic cylindrical pins and are connected with the wheel connecting part. The connecting structure is simple, higher in assembling and positioning precision and convenient to dismount, structural stress in the braking process can be reduced, and the reliability of the connecting structure is improved.

Description

technical field [0001] The invention relates to a connection structure of a wheel-mounted brake disc for rail transit vehicles, and belongs to the technical field of brake discs for rail transit vehicles. Background technique [0002] The disc brake device is the main basic braking method of rail transit. When braking, the brake caliper suspended on the bogie pushes the brake pads to press the brake disc to perform braking. At present, the existing brake discs can be divided into two types according to their installation structures: shaft-mounted and wheel-mounted, which are respectively installed on the axles and wheels correspondingly. Common wheel-mounted brake discs are usually fastened and installed on both sides of the wheel web by two independent integral or split friction rings. The friction rings are evenly distributed with fastener connection holes and positioning pin installation grooves in the circumferential direction. There are heat dissipation ribs, and the h...

AI Technical Summary

Problems solved by technology

Moreover, the connecting flange structure is connected to the wheel by bolts, without an accurate positioning structure, and the braking torque is transmitted through the bolts, the braking torque borne by the connecting bolts during the braking process is relatively large, and the reliability of the train operation is not high

Images