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Sound damping and vibration reducing system

A technology of vibration reduction system and muffler, which is applied in the direction of sounding equipment, measuring ultrasonic/sonic wave/infrasonic wave, measuring device, etc. The effect of the influence of free sound field characteristics

Inactive Publication Date: 2014-03-26
BEIQI FOTON MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the existing dynamometer or the transmission system connected with the motor and the test piece is prone to vibration and noise under high-speed rotation, thus affecting the noise test

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Embodiment Construction

[0019] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0020] Such as figure 1 As shown, the vibration damping system provided by the embodiment of the present invention includes a muffler 1 and an elastic shaft 2 , and the muffler 1 is sleeved on the elastic shaft 2 .

[0021] Such as figure 2 Shown is a schematic diagram of the structural layer of the sound attenuation and vibration reduction system. The muffler 1 is a three-layer structure, including an inner sound-transmitting and sound-absorbing perforated steel plate 3, a sound-absorbing layer 4, and an outer sound-transmitting and sound-absorbing perforated steel plate 5; the sound-absorbing Layer 4 is filled between the inner sound-transmitting and sound-absorbing perf...

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Abstract

The invention relates to the technical field of mechanical noise test and particularly relates to a sound damping and vibration reducing system. The invention provides a sound damping and vibration reducing system which includes a muffler and an elastic shaft, wherein the muffler is sleeved on the elastic shaft. Thus, noise generated due to high-speed rotation of the elastic shaft can be eliminated, and the muffler can absorb the noise generated by the elastic shaft, namely, the noise generated due to high-speed rotation of a shafting is reduced and eliminated, and meanwhile, reflection of the shafting on noise in a semi-anechoic chamber or an anechoic chamber can be eliminated, and the influence of a transmission system to the free sound field characteristics of the anechoic chamber can be reduced or eliminated.

Description

technical field [0001] The invention relates to the technical field of mechanical noise testing, in particular to a noise elimination and vibration reduction system. Background technique [0002] In the semi-anechoic chamber or anechoic chamber, the transmission system connected with the dynamometer or the motor and the test piece is prone to vibration and noise under high-speed rotation, and these vibrations and noise will interfere with the semi-anechoic chamber or anechoic chamber. The free sound field characteristics of the chamber affect the need for noise testing of engines, gearboxes, powertrains (engines, gearboxes and rear axles), motors, etc. [0003] Therefore, aiming at the above deficiencies, the present invention provides a noise reduction and vibration reduction system. Contents of the invention [0004] (1) Technical problems to be solved [0005] The purpose of the invention is to solve the problem that vibration and noise are easily generated under high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H17/00G10K11/168B32B33/00
Inventor 马维忍孙洪飞崔玉敬
Owner BEIQI FOTON MOTOR CO LTD
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