CN204998751U - Sound insulation wall board for airplane - Google Patents
Sound insulation wall board for airplane Download PDFInfo
- Publication number
- CN204998751U CN204998751U CN201520549845.6U CN201520549845U CN204998751U CN 204998751 U CN204998751 U CN 204998751U CN 201520549845 U CN201520549845 U CN 201520549845U CN 204998751 U CN204998751 U CN 204998751U
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- sound
- aircraft
- covering
- acoustics
- insulation wallboard
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- 238000009413 insulation Methods 0.000 title claims abstract description 44
- 239000013078 crystal Substances 0.000 claims abstract description 38
- 239000000463 material Substances 0.000 claims description 21
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 abstract description 11
- 230000000694 effects Effects 0.000 description 13
- 238000010521 absorption reaction Methods 0.000 description 5
- 239000006260 foam Substances 0.000 description 3
- 238000002955 isolation Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000005534 acoustic noise Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model relates to an aircraft sound insulation wallboard, aircraft sound insulation wallboard include covering, many stringers and many bulkheads, and stringer and bulkheads equipartition are put in the inboard of covering, and enclose out a region by adjacent stringer and bulkheads, wherein, aircraft sound insulation wallboard still including the acoustics package that is the phonon crystal form, acoustics package in the inboard of covering, arrange in the region. The utility model discloses an above-mentioned installation of phononic crystal acoustics package has characteristics such as simple installation, dismantlement convenience to maintainability on the assurance machine.
Description
Technical field
The utility model relates to a kind of aircraft target ship, is particularly useful for being furnished with the aircraft sound-insulation wallboard that the expectation of long purlin and bulkhead has high sound insulation property.
Background technology
Along with environmental demands and improving constantly of requiring ride quality etc., in aircraft cabin, the research and development of noise reduction technology are more and more subject to extensive concern.Usually, in aircraft cabin, noise reduction technology adopts sound absorption, sound insulation, vibration isolation and combinations thereof technological means etc. substantially.Sound absorption and sound insulation and noise reducing technology generally rely on the increase density of sound deadener or thickness to realize, and vibration isolation relies on vibration isolator to realize substantially, but above-mentioned noise reduction technology all needs to have certain space or sacrifice certain weight to realize noise reduction.
But for aircraft, weight and space are all need the strict sensitive parameter controlled when airplane design, so carry out the strict restriction that noise reduction measure is just subject to space and weight aboard.In other words, in aircraft cabin noise reduction various means be conflict to the demand of space and weight, therefore all expect for a long time to break through this technical bottleneck.
At present, known prior art proposes a kind of design being used for phonon crystal to strengthen the sound insulation of conventional airplane wallboard.Owing to not relating to the placement location on concrete wallboard, although adopt phonon crystal can improve the overall defening effect of aircraft target ship, but prior art does not consider that phonon crystal actual installation aboard and effect ensure, therefore, phonon crystal cannot be applied in the reality of aircraft engineering.
In other words, the machine of phonon crystal acoustics bag uses and must have good noise reduction and mounting means easily.Therefore, still there is the demand to the machine guaranteeing phonon crystal acoustics bag being installed and optimizes further noise reduction.
Utility model content
The utility model provides a kind of aircraft sound-insulation wallboard, this aircraft sound-insulation wallboard comprises covering, many long purlins and many bulkheads, described long purlin and described bulkhead are arranged in the inner side of described covering, and adjacent long purlin and bulkhead cross a region, wherein, aircraft sound-insulation wallboard also comprises the acoustics bag in phonon crystal form, this acoustics wrap in covering inner side, be arranged in above-mentioned zone.
So far, the utility model proposes a kind of sound insulation sound absorption structure of novel aircraft, namely based on the configuration of aircraft skin, long purlin and bulkhead.By this acoustics bag in phonon crystal form, make full use of aircraft skin inner space, thus provide sufficient space for installing sound insulating structure, guarantee aircraft defening effect.
Particularly, acoustics bag is detachably fixed on the inner side of covering.Such as, acoustics bag can adhere on the inner side of described covering by velcro.Like this, acoustics bag just can be installed to the above-mentioned particular locations inside covering very easily, and the mode of velcro is also through and repeatedly verifies simultaneously, can guarantee the installation effect of phonon crystalline substance bag completely and install firmness.Or acoustics bag is also installed on the inner side of covering by securing device.
It is preferred that can make acoustics bag and covering spaced apart, thus this acoustics bag and covering, long purlin and bulkhead formation sound cavity.In other words, utilize phonon crystal acoustics bag to achieve the sound cavity structure of a sound insulation sound absorption aboard, this sound cavity structure considerably improves the noise reduction of phonon crystal acoustics bag further.
It is contemplated that, this acoustics bag is opened with the clear width of covering by foamed materials.More preferably, acoustics bag and the spaced apart distance being no more than the thickness in the described region crossed by long purlin and bulkhead of covering, such as about 10 millimeters, to obtain significant noise reduction.
In addition, the side that acoustics wraps in towards covering is provided with velcro, can be installed on the foamed materials that is arranged on inside covering to make acoustics bag by velcro.That is, ensure that and phonon crystal acoustics chartered plane is installed and ability to dismantle.
In addition, aircraft sound-insulation wallboard also comprises Sound-proof material, and this Sound-proof material and acoustics package are fitted together, and is installed in above-mentioned zone thus together.
Especially, acoustics bag is positioned in Sound-proof material, makes to be covered with film outside this Sound-proof material, thus Sound-proof material is rolled into an entirety together with acoustics bag, thus makes full use of limited installing space to strengthen the effect of sound insulation sound insulation further.
The beneficial effect of utility model
Aircraft sound-insulation wallboard of the present utility model utilizes phonon crystal acoustics bag to achieve the sound cavity structure of a sound insulation sound absorption aboard, after formation sound cavity, high sound pressure will be produced in sound cavity, namely sound is collected in sound cavity with the form of energy, the acoustically effective of phonon crystal acoustics bag will be improved like this, thus cause the energy through the sound of phonon crystal acoustics bag to decline, the defening effect formed.
While guaranteeing phonon crystal acoustics bag noise reduction, be convenient to be installed in aircraft target ship according to phonon crystal acoustics bag of the present utility model, namely the installation of phonon crystal acoustics bag has the feature such as simple installation, convenient disassembly, thus maintainability on guarantee machine.
Accompanying drawing explanation
Fig. 1 illustrates the schematic isometric according to aircraft sound-insulation wallboard of the present utility model, wherein, shows the acoustics bag in region that the long purlin that is arranged on aircraft target ship and bulkhead surround;
Fig. 2 illustrates the schematic sectional view according to aircraft sound-insulation wallboard of the present utility model, wherein, shows the combination comprising acoustics bag and Sound-proof material.
Fig. 3 illustrates the contrast schematic graph of the aircraft defening effect in two kinds of situations of sound cavity (the utility model) and noiseless cavity.
Detailed description of the invention
The utility model relates to the sound-insulation wallboard for noise reduction in aircraft cabin.In general, aircraft comprises covering 10, and the effect of covering maintains aircraft configuration, makes it have good aerodynamic characteristics.Covering to bear force transmission after aerodynamic effect on the skeleton of the fuselage be connected and wing.
In most of the cases, aircraft skin can support long purlin 20 as aircraft structural component and bulkhead 30, they are positioned at the inner side towards aircraft cabin of covering respectively, and long purlin is along extending with the parallel longitudinal direction of aircraft, described bulkhead extends along the direction vertical with long purlin respectively, forms all how long purlins and bulkhead thus and to interlock the structure of (but being not limited to intersect).In the utility model, need the aircraft target ship of sound insulation sound insulation can comprise above-mentioned covering, long purlin and bulkhead.
As clearly shown in Figure 1, adjacent two long purlins 20 and the parallel to each other and spaced apart certain distance of adjacent two bulkheads 30, thus, between adjacent two long purlins 20 and adjacent two bulkheads 30, be furnished with the phonon crystal acoustics bag 40 in phonon crystal form.That is, inner side (namely, towards that side of the engine room inside) place that phonon crystal acoustics wraps in covering is arranged in the region that surrounded by the long purlin 20 of aircraft target ship and bulkhead 30.
This phonon crystal acoustics bag 40 such as can comprise matrix, multiple lumped mass block and elastic membrane, and wherein, lumped mass block is coated and be connected to matrix by elastic membrane.It will be understood, the formation of phonon crystal acoustics bag 40 is not limited to the form shown in Fig. 1, can be the various ranks combinations being conducive to sound insulation and noise reducing.
Similarly, the distribution that acoustics wraps in region that long purlin 20 and bulkhead 30 surround also can change as required, such as, be also not necessarily furnished with acoustics bag in each this region.
Advantageously, phonon crystal acoustics bag can also combinationally use with Sound-proof material 60.As shown in Figure 2, such as, Sound-proof material can be arranged between phonon crystal acoustics bag and aircraft target ship (that is, inside covering).Preferably, Sound-proof material 60 is the spaced apart certain distance with wallboard still, but also directly neighbour can be butted on wallboard.
Upper outside except being then installed to aircraft target ship together with being pre-assembled in Sound-proof material 60 by acoustics bag, also can imagining acoustics bag, to be arranged on the Sound-proof material be arranged in aircraft target ship inner, and can be coated with film outside acoustics bag.
The installation of phonon crystal acoustics bag 40 in above-mentioned zone adopts detouchable fixed form, the mode such as boning/adhere to or be threaded, but be not limited thereto, anyly can guarantee the mode of installation fastness (particularly, mechanical system, such as welding etc.).
As shown in Figure 2, the side towards covering of acoustics bag can be provided with velcro 70, and thus, phonon crystal acoustics bag utilizes the mode of velcro to be installed on wallboard, thus ensure that phonon crystal acoustics wraps in the simplicity of the Assembly &Disassembly on machine.In addition, contriver also by the machine in early stage tries to install, tests the installation effect of phonon crystalline substance bag and installation firmness.
In order to strengthen the noise reduction of phonon crystal acoustics bag further, except increasing body insulation such as Sound-proof material 60 grade, the layout improving existing structure also can be utilized to reach this object.
Such as, when installing phonon crystal acoustics bag, itself and the spaced apart certain distance of aircraft skin can be made.Particularly, spacing distance is not more than the thickness in the described region crossed by long purlin and bulkhead, and (thickness direction refers to the direction longitudinally vertical with aircraft, such as pointing to the direction of engine room inside, if consider aircraft target ship radian, is the radial direction of radian), preferably spaced apart about 10 millimeters.Thus, as shown in Figure 2, can at phonon crystal acoustics bag and aircraft skin 10, form a sound cavity 50 between long purlin 20 and bulkhead 30, thus aircraft target ship vibration passing can be stoped to phonon crystal, reduce the impact of vibration on phonon crystal of aircraft target ship thus, to play the defening effect of phonon crystal self greatly and therefore significantly to improve overall noise reduction.
Fig. 3 schematically shows the contrast of the aircraft defening effect in the two kinds of situations that there is sound cavity 50 and there is not sound cavity.According to the correlation curve in Fig. 3, under the condition of sound cavity, in certain frequency limit, compared to the situation of noiseless cavity, noise insulation factor has the raising of 7-10dB.That is, contriver is by the repeatedly sound insulation test of aircraft target ship, demonstrates the significant noise reduction of this creationary sound cavity structure in aircraft circles be made up of with bulkhead 30 phonon crystal acoustics bag 40, aircraft skin 10, long purlin 20.
Preferably, can by have certain thickness, be at least arranged between velcro 70 and phonon crystal acoustics bag 40 to make acoustics bag 40 realize this sound cavity with covering 10 is spaced apart with the foam of autohension in its side.Particularly, this foam 80 with autohension only can be arranged on the bight of acoustics bag, to reduce the barrier effect that foam 80 itself brings noise reduction.
Be considered to preferred embodiment of the present invention at present although illustrate and describe, one skilled in the art should appreciate that benefiting from the present invention can carry out various additional change and change, and do not depart from the scope of the present invention limited by described claims.Such as, although this specification sheets describes with reference to aircraft target ship, those skilled in the art are also understood that, this sound-insulation noise reducer also can be applicable to other position on aircraft, even for any suitable position of the needs sound insulation beyond aircraft.
Although this patent is a kind of novel acoustic noise reduction bag based on aircraft target ship, but the application of this patent is not limited only to the wallboard of aircraft, in other region of aircraft, as long as meet the region of the installation requirement of novel acoustic bag, the object that this patent reaches sound insulation and noise reducing all can be applied.
In addition except aircraft circles, in other field, such as automobile sidewall, the positions such as steamer cabin wallboard, can reach the requirement of sound insulation and noise reducing equally by application this patent.
Claims (9)
1. an aircraft sound-insulation wallboard, described aircraft sound-insulation wallboard comprises covering, many long purlins and many bulkheads, described long purlin and described bulkhead are arranged in the inner side of described covering, and cross a region by adjacent long purlin and bulkhead, it is characterized in that, described aircraft sound-insulation wallboard also comprises the acoustics bag in phonon crystal form, described acoustics wrap in described covering inner side, be arranged in described region.
2. aircraft sound-insulation wallboard as claimed in claim 1, it is characterized in that, described acoustics bag is detachably fixed on the inner side of described covering.
3. aircraft sound-insulation wallboard as claimed in claim 2, is characterized in that, on described acoustics bag adheres to described covering inner side by velcro or be installed to by securing device on the inner side of described covering.
4. aircraft sound-insulation wallboard as claimed in claim 1, is characterized in that, described acoustics bag and described covering spaced apart, to make described acoustics bag and described covering, described long purlin and described bulkhead formation sound cavity.
5. aircraft sound-insulation wallboard as claimed in claim 4, is characterized in that, by foamed materials by described acoustics bag and described covering spaced apart.
6. aircraft sound-insulation wallboard as claimed in claim 3, it is characterized in that, the side that described acoustics wraps in towards described covering is provided with velcro, can be attached on the described foamed materials that is arranged on inside described covering to make described acoustics bag by described velcro.
7. aircraft sound-insulation wallboard as claimed in claim 1, it is characterized in that, also comprise Sound-proof material, described Sound-proof material and described acoustics package are fitted together, and are installed in described region thus together.
8. aircraft sound-insulation wallboard as claimed in claim 7, it is characterized in that, described acoustics bag is positioned in described Sound-proof material, is covered with film outside described Sound-proof material, thus described Sound-proof material is rolled into an entirety together with described acoustics bag.
9. aircraft sound-insulation wallboard as claimed in claim 4, is characterized in that, the spaced apart distance being no more than the thickness in the described region crossed by long purlin and bulkhead of described acoustics bag and described covering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520549845.6U CN204998751U (en) | 2015-07-27 | 2015-07-27 | Sound insulation wall board for airplane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520549845.6U CN204998751U (en) | 2015-07-27 | 2015-07-27 | Sound insulation wall board for airplane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204998751U true CN204998751U (en) | 2016-01-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520549845.6U Active CN204998751U (en) | 2015-07-27 | 2015-07-27 | Sound insulation wall board for airplane |
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| Country | Link |
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| CN (1) | CN204998751U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109533269A (en) * | 2018-11-26 | 2019-03-29 | 中国人民解放军国防科技大学 | Low-frequency vibration-damping noise-reducing sound-insulating wall plate structure for aircraft cabin |
| CN113753173A (en) * | 2021-10-15 | 2021-12-07 | 中国人民解放军国防科技大学 | Sound insulation, vibration reduction and noise suppression multifunctional integrated metamaterial plate shell structure and preparation method thereof |
-
2015
- 2015-07-27 CN CN201520549845.6U patent/CN204998751U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109533269A (en) * | 2018-11-26 | 2019-03-29 | 中国人民解放军国防科技大学 | Low-frequency vibration-damping noise-reducing sound-insulating wall plate structure for aircraft cabin |
| CN113753173A (en) * | 2021-10-15 | 2021-12-07 | 中国人民解放军国防科技大学 | Sound insulation, vibration reduction and noise suppression multifunctional integrated metamaterial plate shell structure and preparation method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |