Elastic wheel noise reduction damper and its assembly and installation method

Abstract

An elastic wheel noise reduction damper and an assembly and installation method thereof, comprising an annular transition plate and a damper body, the damper body comprises metal plates stacked in sequence and a rubber damping layer filled between the metal plates, and the multi-layer metal plates are fixed by rivets It is also connected with the annular transition plate by rivets, and the riveting force of the rivets does not act on the rubber damping layer. The invention enables most of the mass of the damper to fully undergo resonance deformation, greatly increasing the number of resonance frequencies of the damper, the vibration absorption frequency bandwidth and the energy transfer consumption efficiency; the overall cantilever structure of the damper and the plurality of The independent cantilever resonance technology can produce different resonance characteristics, increase the number of resonance frequencies, and can match the axial modal frequency of the elastic wheel rim to effectively reduce the screeching noise generated when the elastic wheel is too small. And it is beneficial to improve noise reduction reliability and durability.

Description

technical field [0001] The invention relates to an elastic wheel noise reduction damper and an assembly and installation method thereof, belonging to the field of elastic wheel vibration reduction and noise reduction. Background technique [0002] In urban planning tram projects, elastic wheels are widely used. Elastic wheels can effectively reduce wheel-rail noise, reduce wheel-rail impact force, reduce wheel-rail wear, and improve line and vehicle service life. Relying on the internal rubber elastomer, the elastic wheel can greatly reduce the noise, but it still cannot meet the urban requirements with stricter noise emission requirements. In order to further reduce the noise, especially to eliminate the screeching noise when driving on a curved section, additional noise reduction measures need to be taken. [0003] At present, the additional noise reduction measures of elastic wheels are mainly divided into two methods: damping ring and damper. In comparison, the former g...

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Problems solved by technology

Elastic wheels can greatly reduce noise by relying on the internal rubber elastic body, but they still cannot meet the requirements of cities with stricter noise emission requirements. In order to further reduce noise, especially the squealing noise when driving in curves, additional noise reduction measures need to be taken

[0003] At present, the additional noise reduction measures for elastic wheels are mainly divided into two methods: damping ring and damper. In comparison, the former consumes frictional energy through the contact interface between the steel ring and the wheel groove, and the manufacturing cost is lower, but the noise reduction The effect is not ideal; the latter produces a resonant frequency that matches the modal frequency of the wheel by rationally designing the mass and stiffness of the steel plate, transfers the vibration energy of the wheel and dissipates energy through the damping material between the steel plates, and has a better noise reduction effect

After literature search, it was found that in the prior art (three patents DE202006012852U1, CN104455148A, and CN206406693U), the damping sheet is made of two layers of thin steel plates bonded by slits along the tangential direction of the inner circular arc of the damping sheet, and riveted with rivets. It is fixed on the wheel, and when the wheel rolls, it causes the damping plate to resonate and consume energy. The disadvantages are: ①The damping plate is thin, light in weight, small in damping, narrow in noise reduction frequency band, limited in its ability to transfer and consume energy, and its noise reduction effect is general ;②The damping sheet is directly fixed on the wheel by bolts. Because the thickness of the damping sheet is thin and the structural strength is low, the stress at the connection part with the bolt is large, so it is easy to fail. , the suspended part has a large disturbance at resonance and low fatigue strength

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