Damping and noise-reducing wheel for rail transportation

Abstract

The invention relates to a damping and noise-reducing wheel for rail transportation. The damping and noise-reducing wheel comprises a hub, a wheel center and a press ring, wherein the press ring is pressed on one side of the wheel center and fixed through threads, and a wheel center convex shoulder and a press ring convex shoulder constitute U-shaped space; the wheel center and the press ring are sleeved with the hub, an annular convex body is arranged in the center of an inner circular end surface of the hub, and an annular closed U-shaped groove is formed between the convex body and the U-shaped space; multiple U-shaped rubber bodies are annularly distributed in the U-shaped groove at equal intervals and are in interference fit with the U-shaped groove under the condition that the wheel is unloaded, and the interference magnitude interval is 6%-14% of the thickness of all positions of the U-shaped rubber bodies; the U-shaped rubber bodies are integrally formed, and included angles between the bottom surface and two side surfaces of each U-shaped rubber body are both 110 degrees. On the basis that the application performance of a traditional resilient wheel is guaranteed, vibration and noise are reduced obviously, unsprung mass of the wheel is reduced, meanwhile, the wheel is convenient to mount, dismount and maintain, heat dissipation is facilitated, and the disperse degree of performance is reduced, so that the service time of the wheel is prolonged.

Description

Technical field [0001] The invention belongs to the technical field of rail transit, and specifically relates to a rail transit vibration and noise reduction wheel. Background technique [0002] With the expansion of urban scale and economic development, urban rail transit has been widely favored by people as an environmentally friendly, energy-saving, fast, comfortable, fast and safe transportation method. However, due to the noise generated during the operation of urban rail transit vehicles and the wear between the wheels and rails, the operation and promotion of urban rail transit are facing severe challenges. In order to alleviate the noise generated by vehicle operation, elastic wheel technology has been widely used in rail vehicles at home and abroad. The elastic wheel is equipped with an elastic element between the wheel center assembly and the hub. Due to the elasticity and damping characteristics of the elastic element, it is equivalent to the single degree of freedom ...

AI Technical Summary

Problems solved by technology

The included angle is designed according to the axle load and stiffness requirements. When the included angle is small, a large stress concentration will occur at the rubber included angle, which seriously affects the safety of the rubber material.

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