Vibration reduction gear with two-dimensional quasi-phonon crystals

A technology of phononic crystals and gears, which is applied in the field of transmission devices, can solve the problems that cannot be completely eliminated, and achieve the effect of improving the working environment of workers, low requirements, and reliable use

Inactive Publication Date: 2014-07-02
HARBIN ENG UNIV
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  • Claims
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Problems solved by technology

But it must be pointed out that vibration and noise generated by gears in the transmission process are unavoidable. We can only weaken the vibration and noise by various means, so that the impact caused by it is within the scope of our requirements, but not completely. eliminate

Method used

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  • Vibration reduction gear with two-dimensional quasi-phonon crystals
  • Vibration reduction gear with two-dimensional quasi-phonon crystals
  • Vibration reduction gear with two-dimensional quasi-phonon crystals

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Embodiment Construction

[0014] The present invention is described in more detail below in conjunction with accompanying drawing example:

[0015] combine Figure 1~3 , the present invention is mainly aimed at the vibration reduction of gears in the medium and high frequency range. The present invention uses quasi-Bragg type phononic crystals to realize the purpose of two-dimensional (radial and circumferential) vibration reduction of gears in the medium and high frequency range. The principle is to use a quasi-Bragg-type phononic crystal disc at the hub of the spoke-type cylindrical gear, and periodically distribute two kinds of phononic crystal damping materials of different materials in the radial and circumferential directions. When propagating in the material, it has the characteristics of reflection and cancellation at the interface of different materials, thus achieving the two-dimensional vibration reduction effect on torsional waves and radial waves. Therefore, the present invention greatly ...

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Abstract

The invention aims to provide a vibration reduction gear with two-dimensional quasi-phonon crystals. The vibration reduction gear comprises a spoke type cylindrical gear ring. The two-dimensional Bragg type quasi-phonon crystals are mounted at a hub of the spoke type cylindrical gear ring, end covers are fixed to the upper and lower end surfaces of the two-dimensional Bragg type quasi-phonon crystals, and the two-dimensional Bragg type quasi-phonon crystals are axially constrained by the end covers and include first phonon crystal materials and second phonon crystal materials, the second phonon crystal materials are radially and circumferentially arranged on the first phonon crystal materials, the first phonon crystal materials are radially and circumferentially arranged on the second phonon crystal materials, the two-dimensional Bragg type quasi-phonon crystals are integrally circular, and axes holes and key slots are formed in the centers of the two-dimensional Bragg type quasi-phonon crystals. The vibration reduction gear has the advantages that vibration transmission at meshed positions of the transmission axial gear ring can be greatly reduced, and an excellent suppressing effect can be realized for vibration due to torsional waves and radial waves on the gear.

Description

technical field [0001] The present invention relates to a transmission device, specifically a gear. Background technique [0002] As an important part of construction machinery transmission system—gear transmission, it has been widely used due to its advantages of high transmission efficiency, compact structure, stable transmission ratio and long life. However, the high-speed operation of the gears will cause different degrees of vibration and noise problems, which will not only reduce the transmission accuracy and service life of the gears, and then affect the working accuracy and service life of the machinery, but also cause noise pollution and affect people's health. Therefore, the vibration and noise reduction of gears is of great significance to improve the use accuracy of machinery, prolong the service life of machinery, and improve people's working environment. At present, there are two main ways to reduce gear noise. One is to minimize the generation of vibration a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H55/17F16H55/14
CPCF16H55/17F16H55/14
Inventor 舒海生刘伟林航董立强李世丹高恩武刘少刚赵丹
Owner HARBIN ENG UNIV
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