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Pneumatic small-ball random vibration generator

A technology of random vibration and generator, which is applied in the direction of sound-generating devices and instruments, can solve the problems of difficulty in extracting the inherent vibration information of machinery, and achieve the effects of convenient installation and operation control, control and reduction, and small volume

Inactive Publication Date: 2011-05-25
朱石坚
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The greater the energy of the background noise, the more difficult it is to extract information about the natural vibration of the machine

Method used

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  • Pneumatic small-ball random vibration generator
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  • Pneumatic small-ball random vibration generator

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Experimental program
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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0029] Such as Figure 1-2 The structure shown is a schematic structural view of the pneumatic ball random vibration generator of the present invention, which includes an aluminum shell 1 and a plurality of polypropylene collision balls, the shell 1 is a hollow flat cylinder with both ends closed, and the shell The oblate cylindrical hollow cavity of the body 1 constitutes the collision chamber 2, and the side wall of the housing 1 is provided with an air inlet 3 and a plurality of air outlets 4, and the collision balls are installed in the collision chamber 2; the air inlet 3 The center of circle of the air outlet hole 4 is on the side wall surface at the same height as the middle part of the housing 1; the air outlet hole 4 is evenly distributed on the housing 1; each of the air outlet holes 4 has the same size; the air inlet hole 3 An air i...

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PUM

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Abstract

The invention discloses a pneumatic small-ball random vibration generator, comprising a housing and small collision balls; wherein the housing is of a hollow flat cylinder shape with two sealed ends; the flat cylindrical hollow cavity of the housing forms a collision chamber; the side wall surface of the housing is provided with one air inlet hole and a plurality of air outlet holes; the small collision balls are loaded in the collision chamber; and the volume sum of the small collision balls accounts for 15-25% of the volume of the collision chamber. The pneumatic small-ball random vibration generator can effectively control and reduce the line spectrum signal-to-noise ratio of each frequency band, and has the advantages of small volume, simple structure design, convenience for mounting, operation and control, and the like; and different power spectrums can be obtained by changing the system parameters as required.

Description

technical field [0001] The invention relates to a vibration generator, in particular to a pneumatic pellet random vibration generator. The utility model belongs to the field of reciprocating mechanical background noise generators. Background technique [0002] Whether it is our daily life or industrial production, some equipment that can generate vibration will be involved, such as automobile engines, household washing machines, machine tool motors, etc. Due to the inherent nature of these devices, they all produce regular vibrations and sounds with fixed frequencies when they work. These vibrations and sounds constitute the inherent dynamic characteristics of these devices. [0003] On the contrary, along with the basic vibration of mechanical equipment, there is often a large amount of background noise from outside the mechanical equipment. The existence of these noises will inevitably cause some interference to the mechanical vibration we are concerned about. The grea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10K9/02
Inventor 朱石坚浣石翁雪涛楼京俊
Owner 朱石坚