Local resonance type photonic crystal vibration damping gear

A phononic crystal, local resonance technology, used in belts/chains/gears, components with teeth, portable lifting devices, etc., can solve the problems of incomplete elimination, noise reduction, vibration weakening, etc., and achieve good vibration reduction. Noise reduction effect, reduce vibration noise, use reliable effect

Inactive Publication Date: 2013-09-11
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But it must be pointed out that we can only weaken the vibration and reduce the noise through various means, so that the impact caused by it is within the scope of our requirements, but it cannot be completely eliminated.

Method used

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  • Local resonance type photonic crystal vibration damping gear
  • Local resonance type photonic crystal vibration damping gear

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Embodiment Construction

[0012] Hereinafter, the present invention will be described in more detail with examples in conjunction with the accompanying drawings:

[0013] Combine Figure 1~2 , The present invention is mainly aimed at gear damping in the middle and low frequency range. Here, the band gap characteristics of the local resonance type phononic crystal in the middle and low frequency range are used to realize the vibration and noise reduction effect of the gear in the middle and low frequency range. The principle is to use a local resonance type phononic crystal rod to replace the gear spokes, and change the circumferential shear wave received by the gear into a bending wave of the phononic crystal rod. When being excited by the meshing frequency located in the band gap of the phononic crystal rod, each local oscillator resonates and interacts with the elastic wavelength traveling wave, thereby inhibiting its propagation and achieving the purpose of vibration and noise reduction. The rod-shap...

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Abstract

The invention aims at providing a local resonance type photonic crystal vibration damping gear. The local resonance type photonic crystal vibration damping gear comprises a gear ring and a wheel hub, local resonance type photonic crystal rods are mounted on an arm of a wheel, two ends of each local resonance type photonic crystal rod are connected with the gear ring and the wheel hub in an interference manner, a welded manner or a screw fastening manner, the local resonance type photonic crystal rods comprise support rods, cladding layers and vibrators, and the cladding layers and the vibrators are mounted on the support rods from inside to outside. The local resonance type photonic crystal vibration damping gear is simple in structure and convenient to manufacture, is enabled to have good damping and noise reducing effects in a low and medium frequency area by converting torsional waves of the gear into bending waves of the support rods, is reliable to use and low in requirements on working environments, and can be used for reducing vibrating noise of a gear box under a low-and-medium-load working condition, improving working environments of workers and the like.

Description

Technical field [0001] The invention relates to a gear, specifically a damping gear. Background technique [0002] As a basic component in the machinery industry, gears play a role in transmitting movement and power, and their applications are also very extensive. The vibration problem in the gear transmission process will not only reduce the transmission accuracy and service life of the gear, but even affect the working accuracy and service life of the machine, but also cause noise pollution and affect people's health. Therefore, the reduction of vibration and noise of gears is of great significance for improving the accuracy of machinery, prolonging the service life of machinery, and improving people's working environment. At present, there are two main methods to reduce gear noise. One is to minimize the generation of vibration and noise. This aspect can be achieved by optimizing the structure, improving accuracy, or reducing installation errors; the second is to control the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H55/17
Inventor 舒海生林航刘伟董立强李世丹高恩武张法刘少刚赵丹
Owner HARBIN ENG UNIV
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