Elastic wheel noise reduction damper and its assembly and installation method

An elastic wheel and damper technology, which is applied in the direction of wheels, wheel counterweights, and wheels characterized by track walking components, can solve the problems of narrow noise reduction frequency band, thin damping sheet thickness, and small damping, and achieve a larger structure. Damping and vibration absorption quality, increasing the number of resonant frequencies, and the effect of increasing the number of resonant frequencies

Active Publication Date: 2022-07-29
ZHUZHOU TIMES NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

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  • Elastic wheel noise reduction damper and its assembly and installation method
  • Elastic wheel noise reduction damper and its assembly and installation method
  • Elastic wheel noise reduction damper and its assembly and installation method

Examples

Experimental program
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Effect test

Embodiment 1

[0033] The elastic wheel noise reduction damper includes an annular transition plate 1 that is fixed to the side of the vehicle hoop and a damper body 2 that is rigidly connected to the annular transition plate 1 and is axially spaced from the side of the vehicle hoop. The device body 2 includes metal plates 3 stacked in sequence and a rubber damping layer 4 filled between the metal plates 3. The multi-layer metal plates 3 are fixed by rivets 5, and the annular transition plate 1 is also fixed by rivets 5. The riveting force of 5 does not act on the rubber damping layer 4.

[0034] As shown in the figure, in the elastic wheel noise reduction damper of the present invention, an annular transition plate 1 is spaced between the damper body 2 and the side surface of the wheel hoop 100 to form an integral resonance cantilever structure. The multi-layer metal plate 3 in the damper body 1 It is fixed by rivets 5, and the annular transition plate 1 is also fixed by rivets 5, and the r...

Embodiment 2

[0043] The difference from Embodiment 1 is that, as Image 6 As shown, the number of the rubber damping layer 4 is one layer, the connecting plate 32 is in the shape of a ring, and the two layers of the base plate 31 pass through the riveted mass block 7 . That is, there is no slit plate in the damper, only two layers of base plate, and a mass block 7 is added to greatly improve the vibration absorption quality of a certain order or a certain order of two frequencies. frequency for noise reduction.

[0044] The assembly and installation method of the elastic noise reduction damper described above includes the following steps:

[0045] 1. According to the main frequency of vibration noise and the axial modal frequency of each order of the tire when the elastic wheel is running, determine the natural frequency parameters of the elastic noise reduction damper to match the axial modal frequency of the tire;

[0046] 2. According to the natural frequency parameters of the elastic...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60B17/00
CPCB60B17/0024B60B17/0027B60B17/0017B60B15/28B60B2900/131B60B2900/133B60Y2200/30
Inventor 查国涛胡金昌王心龙傅荣贺才春涂奉臣胡伟辉肖祥龙颜瑶
Owner ZHUZHOU TIMES NEW MATERIALS TECH
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