Railway vehicle brake disc plate and combined warping prevention shaft-mounted brake disc

Abstract

The invention provides a railway vehicle brake disc plate and a combined warping prevention shaft-mounted brake disc. The railway vehicle brake disc plate comprises a semi-annular disc, wherein a flange is connected to the inner ring of the semi-annular disc; through holes are formed in the flange and uniformly distributed in the circumferential direction; wide radiating ribs and narrow radiating ribs are uniformly distributed on the semi-annular disc in the circumferential direction; a quasi wide radiating rib is arranged at one end of the semi-annular disc, and a lug boss is arranged at the other end of the semi-annular disc; the lug boss extends in the circumferential direction of the semi-annular disc and forms a lug boss projection protruding out of the other end of the semi-annular disc; and a radial groove which can be also used for circumferential connection is formed in the quasi wide radiating rib and can accommodate the lug boss projection and the part, above the radial groove, of the quasi wide radiating rib. The combined warping prevention shaft-mounted brake disc comprises a disc hub and two brake disc bodies respectively arranged on two sides of the disc hub and fixed with the disc hub, wherein each brake disc body consists of two railway vehicle brake disc plates which are mutually connected.

Description

technical field [0001] The invention relates to the technical field of rail vehicle braking, in particular to a rail vehicle brake disc, a dynamic combined anti-warping shaft-mounted brake disc and an assembly method. Background technique [0002] When the train running speed is above 120km / h, the traditional brake shoe-wheel tread braking can no longer meet the requirements of train braking. Disc brakes. [0003] The brake disc is a key component that converts the kinetic energy of the train into heat energy through the disc energy. The brake discs developed at home and abroad include: cast iron discs, forged steel discs, cast steel discs, aluminum matrix composite discs, C / C composite disc body. The steel disc has the characteristics of high technical maturity, low cost and wide range of applicable speeds. It has been widely used in fast and high-speed EMU trains in developed countries abroad. Brake discs have complex service conditions and are subject to coupling effec...

AI Technical Summary

Problems solved by technology

After the disc body warps, it will lead to uneven pressure distribution of the brake pads, resulting in abnormal wear of the brake pads and aggravating the thermal damage of the disc surface, resulting in frequent replacement of the brake pads, increasing operating costs and reducing the service safety of the brake discs

[0004] In addition, when installing the brake disc, the brake disc is placed on the wheel shaft. When replacing the brake disc, the brake disc needs to be taken out along the axial direction of the wheel shaft. Since the wheel shaft is also equipped with other mechanisms or devices, these Mechanisms or devices are obstacles to dismantling the brake disc, and these mechanisms or devices have to be removed first when disassembling the brake disc, so the replacement of the existing brake disc is very complicated

[0005] People may think of opening and closing to solve this problem, but when the assembled brake disc rotates at high speed, the joints of the opening and closing discs will valgus and axially warp.

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