Urban rail vehicle wheel composite damping vibration attenuation noise reduction device

Abstract

The invention relates to an urban rail vehicle wheel composite damping vibration attenuation noise reduction device. The device comprises two noise reduction assemblies which are concentric with a wheel spoke plate. The two noise reduction assemblies are respectively arranged on two sides of the wheel spoke plate. Each noise reduction assembly comprises an annular particle damping mechanism, an elastic damping layer, and a packing medium layer. The packing medium layer is abutted against the wheel spoke plate. The elastic damping layer is between the particle damping mechanism and the packing medium layer. The particle damping mechanism is formed by a particle damping container and a particle damping material in the particle damping container. The device has double vibration and noise reduction function of a dynamic absorbing damper and a particle damper. The device is advantaged by wide application range, less modification on the original structure of a wheel, low added mass, wide acting bandwidth, obvious vibration reduction effect, and especially good inhibition effect on wheel vibration noise with high-frequency characteristic.

Description

technical field [0001] The invention relates to the field of rail vehicle vibration reduction, in particular to a compound type damping vibration reduction and noise reduction device for urban rail vehicle wheels. Background technique [0002] The rapid development of urban rail transit system has the advantages of energy saving and environmental protection, but there is the problem of high noise environmental pollution. When the urban rail vehicle is running, the vehicle and the track interact continuously, which will generate continuous vibration and noise, which not only deteriorates the ride comfort of the passengers in the vehicle, but also makes the residents along the line suffer from vibration and noise. Wheel-rail noise is the main noise source of urban rail transit, and wheel vibration and acoustic radiation are important causes of wheel-rail noise. Therefore, reducing wheel structure vibration and controlling wheel-rail noise are key issues that need to be solved ...

AI Technical Summary

Problems solved by technology

[0007] Compared with the present invention, this patent has the following defects: (1) the principle and device of the dynamic shock absorber are not used in the non-elastic damping unit; (2) the two-layer disc shell is located on the outer surface of the entire spoke plate of the wheel, and the structure is unreasonable It is impossible or difficult to complete the installation and meet the strength requirements under high-speed operating conditions, and its additional mass is huge, which is not conducive to energy saving, environmental protection, vehicle operation safety and installation; (3) Wear-resistant rubber interlayers are installed in the annular sealing groove, and particle damping The principle is that through the collision and friction between the particles and between the particles and the container wall when the wheels vibrate, the effect of generating heat energy to consume the vibration energy of the main structure wheel is achieved, and the patent installs a rubber interlayer in the groove where the particle material is located to insulate The collision between the particles and the container wall is significantly reduced, which is not conducive to the conversion and consumption of energy, and does not form a complete particle damper; (4) in the particle damping materials, plastic and rubber materials are used. If the particles of these two materials are used for collision and friction between themselves, the energy consumption is very small, and the effect of rigid collision friction cannot be achieved, and it cannot be filled as a particle damping material; (5) Lubrication is added to the annular sealing groove Oil and lubricating oil will cause the particle damping materials in the groove to stick to each other, making it impossible to generate friction and collision between each other, and cannot achieve the particle damping effect and the effect of attenuating the vibration energy of the wheel.

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