A rail vehicle elastic wheel with active control of vibration and noise reduction

Abstract

The invention provides a rail vehicle elastic wheel with active control vibration and noise reduction, which belongs to the technical field of rail vehicles. It includes a wheel core, a wheel rim, an elastic mechanism, an upper sealing shoe and a lower sealing shoe. The elastic mechanism includes an upper rubber ring, a pressure ring and a lower rubber ring which are sheathed in sequence; liquid flow channels are evenly distributed on the circumference of the elastic mechanism. The upper liquid chamber is formed between the outer circumference of the upper rubber body and the inner circumferential surface of a pair of upper sealing tiles; the lower liquid chamber is formed between the inner circumference of the lower rubber body and the outer peripheral surface of the lower sealing tile, and the upper liquid chamber The liquid flow channels on the elastic mechanism are respectively connected with the lower liquid chamber; the upper liquid chamber, the lower liquid chamber and the liquid flow channel are filled with vibration-damping liquid, and the energy loss generated by the flow of the vibration-damping liquid in the liquid flow channel To reduce wheel vibration, effectively reduce wheel vibration at low frequencies. Active wheel control improves wheel vibration damping over a wide speed range.

Description

technical field [0001] The invention belongs to the technical field of rail vehicles, and in particular relates to elastic wheels for rail vehicles. Background technique [0002] With the acceleration of urbanization, convenient, safe, economical and environmentally friendly urban rail transit has gradually become the primary choice for people to travel. With the increase of vehicle speed and passenger capacity, the noise and vibration caused by wheel-rail impact and vibration affect the comfort of passengers when riding, and also have a certain impact on the urban environment and urban residents living along the line. Most of the traditional rail vehicle wheels are rigid wheels. A large part of the noise of rail vehicles comes from wheel-rail noise. In high-speed railway noise and urban rail traffic noise, wheel-rail noise is the main component. Among them, wheel vibration sound radiation It is also an important noise source, so reducing wheel vibration and noise radiation...

AI Technical Summary

Problems solved by technology

[0004] The existing design of elastic wheels does not take into account the matching of the amplitude and frequency of wheel-rail impact and vibration with the damping effect of elastic elements. The elastic characteristics of elastic wheels can well attenuate the vibration of wheels at high frequencies, but Vibration in the lower frequency band, traditional elastic wheels do not show any improvement compared to traditional rigid wheels

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