CN207161610U - A kind of compound vibration-damper - Google Patents
A kind of compound vibration-damper Download PDFInfo
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- CN207161610U CN207161610U CN201720403892.9U CN201720403892U CN207161610U CN 207161610 U CN207161610 U CN 207161610U CN 201720403892 U CN201720403892 U CN 201720403892U CN 207161610 U CN207161610 U CN 207161610U
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Abstract
A kind of compound vibration-damper is the utility model is related to, it includes vibration isolator and the steelframe being arranged on above the vibration isolator, and shock absorber is provided between the vibration isolator and steelframe, vibration insulation is provided with the steelframe.The utility model is provided with steelframe above vibration isolator, shock absorber is provided between vibration isolator and steelframe, vibration insulation is provided with steelframe, blower fan is placed with when being worked on vibration insulation, vibration is transferred on vibration insulation in the form of elastic wave caused by blower fan, because vibration insulation has the function that vibration isolation, vibration insulation absorbs most of vibration, the vibration for being sent to steelframe reduces, only less vibration is communicated on shock absorber by steelframe, the further damping vibration of shock absorber, final only a small amount of vibration is sent on vibration isolator, vibration isolator further absorbs vibration, therefore the utility model passes through MULTILAYER COMPOSITE vibration damping, the solid sound opened finally by ground and air transmission reduces.
Description
Technical field
A kind of compound vibration-damper is the utility model is related to, belongs to noise abatement field.
Background technology
Noise can damage health, and people is in noise circumstance for a long time, and hearing can be damaged by most direct first,
Secondly noise long term can break the balance that cerebral cortex is excited and suppresses, cause condition anti-in the central nervous system of people
It is undermined to penetrate exception, cerebrovascular tension force, it is powerless to make one headache, dizziness, tinnitus, insomnia and dreamful sleep general fatigue, can also cause digestion
The disease such as bad, gastric ulcer and hypertension, coronary heart disease, artery sclerosis.
In order to which ventilation can install blower fan in mansion, fan noise is based on middle low frequency, in wideband noise characteristic.Wind
Percussion action directly excites solid element to vibrate when machine is run, and the form of vibrating elastic ripple passes through Equipment Foundations, equipment Hard link
Propagate, and can be traveled to farther out by solid to space radiation noise, i.e. " solid sound ", " solid sound " in communication process
Side.Solid acoustic attenuation is very slow, travels to factory circle and then forms bothersome low-frequency noise.Noise runs into the production of metal class thin-slab structure
Raw resonance, forms quadratic noise.Numerous noise reduction products now are produced for the solid sound of reply blower fan on the market, but actually use effect
Fruit is bad.
The content of the invention
In view of the above-mentioned problems, the purpose of this utility model is to provide a kind of compound vibration-damper that can reduce solid sound.
To achieve the above object, the utility model uses following technical scheme：A kind of compound vibration-damper, it is characterised in that：
Including vibration isolator and the steelframe being arranged on above the vibration isolator, shock absorber, institute are provided between the vibration isolator and steelframe
State and vibration insulation is provided with steelframe.
The vibration insulation is centrifugally glass-wool plate.
The steelframe is that No. 50 channel-section steels are welded.
The vibration isolator is made of rubber.
The centrifugally glass-wool plate unit weight is 16kg~48kg/m3。
The vibration isolation mat thickness is 10~50mm.
For the utility model due to taking above technical scheme, it has advantages below：1st, the utility model is on vibration isolator
Side is provided with steelframe, and shock absorber is provided between vibration isolator and steelframe, vibration insulation is provided with steelframe, is worked on vibration insulation
When be placed with blower fan, vibration caused by blower fan is transferred on vibration insulation in the form of elastic wave, because vibration insulation has vibration isolation
Effect, vibration insulation absorb most of vibration, and the vibration for being sent to steelframe reduces, and only less vibration is communicated to shock absorber by steelframe
On, the further damping vibration of shock absorber, final only a small amount of vibration is sent on vibration isolator, and vibration isolator further absorbs vibration,
Therefore by MULTILAYER COMPOSITE vibration damping, the solid sound opened finally by ground and air transmission reduces the present invention.
Brief description of the drawings
Fig. 1 is the utility model overall structure diagram；
Fig. 2 is the utility model steelframe overlooking the structure diagram；
Structural representation when Fig. 3 is utility model works.
Embodiment
The utility model is described in detail with reference to the accompanying drawings and examples.
As shown in Figure 1 and Figure 2, the utility model includes vibration isolator 1 and is arranged on the steelframe 2 of the top of vibration isolator 1, in vibration isolation
Shock absorber 3 is provided between pad 1 and steelframe 2, vibration insulation 4 is provided with steelframe 2.The equipment for needing to carry out noise reduction process is arranged on
On vibration insulation 4 of the present utility model, vibration caused by equipment is transferred in the form of elastic wave on vibration insulation 4, due to vibration insulation 4
There is vibration isolation, vibration insulation 4 absorbs most of vibration, be sent to steelframe 2 vibration reduce, therefore only it is less vibration by
Steelframe 2 is communicated on shock absorber 3,3 further damping vibration of shock absorber, and final only a small amount of vibration is sent on vibration isolator 1, every
The pad 1 that shakes further absorbs vibration, and the solid sound opened finally by ground and air transmission reduces.
In above-described embodiment, vibration insulation 4 is centrifugally glass-wool plate, and centrifugally glass-wool plate unit weight is 16kg~48kg/m3。
In above-described embodiment, steelframe 2 is that No. 50 channel-section steels are welded.
In above-described embodiment, vibration isolator 1 is made of rubber, and the thickness of vibration isolator 1 is 10~50mm.
Illustrate effect of the present utility model below by a specific embodiment.
The blower fan for ventilation is equiped with mansion, blower fan is sensitive office floor in 32 layers, 31 layers, according to
GB22337-2008 (social living environment's noise emission standard), the noise for floor of handling official business should be controlled in below 50dB.
Through investigation, the blower fan of Ventilator Room influences maximum to sensitive room vibration wall, ground vibration, and blower fan 6 is put by bracket 5
Put on compound vibration-damper, the position such as suppot hanger of duct of blower fan 6 has carried out disconnection process, but the base of blower fan 6 with building structure
Plinth is connected vibration damping processing with ground not enough, need to be further improved, transaudient to reach decrease blower fan low frequency configuration, improves sensitive room
Between acoustic environment purpose.
The measure taken is as follows：
As shown in figure 3, first setting the utility model compound vibration-damper on floor, blower fan is arranged on of the present utility model
On vibration insulation 4.
Before and after installing compound vibration-damper, maximum vibration acceleration magnitude is as shown in table 1 in sensitive room.
Table 1
As known from Table 1 after vibration reducing measure is taken to Fresh air handling units, No. 1 blower fan is to caused by sensitive room wall, ground
Two low-frequency vibrations of 197Hz and 170Hz have eliminated so that the intensity of the solid sound of propagation greatly reduces.
Before and after installing compound vibration-damper, the noise figure of each test point is as shown in table 2 below in Ventilator Room.
Table 2
From test result as can be seen that after this engineering construction, 31 layers of noise is respectively less than 50dB, acceptance(check).
The utility model is only illustrated with above-described embodiment, and structure, set location and its connection of each part all have
Changed, it is all that individual part is changed according to the utility model principle on the basis of technical solutions of the utility model
Enter and equivalents, should not exclude outside the scope of protection of the utility model.
Claims (1)
- A kind of 1. compound vibration-damper, it is characterised in that：Including vibration isolator and the steelframe being arranged on above the vibration isolator, described Shock absorber is provided between vibration isolator and steelframe, vibration insulation is provided with the steelframe；The vibration insulation is centrifugally glass-wool plate； The vibration isolator is made of rubber；The steelframe is that No. 50 channel-section steels are welded；The centrifugally glass-wool plate unit weight be 16kg~ 48kg/m3；The vibration isolation mat thickness is 10~50mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720403892.9U CN207161610U (en) | 2017-04-18 | 2017-04-18 | A kind of compound vibration-damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720403892.9U CN207161610U (en) | 2017-04-18 | 2017-04-18 | A kind of compound vibration-damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207161610U true CN207161610U (en) | 2018-03-30 |
Family
ID=61709853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720403892.9U Active CN207161610U (en) | 2017-04-18 | 2017-04-18 | A kind of compound vibration-damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207161610U (en) |
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2017
- 2017-04-18 CN CN201720403892.9U patent/CN207161610U/en active Active
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