CN207250135U - A kind of cavity wedge absorber complex with metallic framework - Google Patents
A kind of cavity wedge absorber complex with metallic framework Download PDFInfo
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- CN207250135U CN207250135U CN201721270658.XU CN201721270658U CN207250135U CN 207250135 U CN207250135 U CN 207250135U CN 201721270658 U CN201721270658 U CN 201721270658U CN 207250135 U CN207250135 U CN 207250135U
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Abstract
A kind of cavity wedge absorber complex with metallic framework is the utility model is related to, belongs to water body environment wedge absorber technical field.The wedge complex includes sound absorption bottom plate, wedge absorber and n metallic framework；Wedge absorber is fixedly connected on the top of sound absorption bottom plate；Wedge absorber includes base portion and tip；Tip is made of the tip unit of n cone；Tip cell array is arranged in the upper surface of base portion and point upward；Each tip unit is internally provided with truncated cone-shaped cavity；The bottom of truncated cone-shaped cavity extends to the bottom of base portion, and the top bore of truncated cone-shaped cavity reduces, and the tip of the central axial tip unit along truncated cone-shaped cavity is extended with elongated cavity；A metallic framework is embedded with inside the wall body surrounded inside the wall body of each tip unit or by each tip unit and base portion.The utility model has certain structural strength and excellent acoustically effective concurrently.The utility model is suitable for underwater environment, the underwater sound land regions of such as anechoic tank, naval vessels.
Description
Technical field
A kind of cavity wedge absorber complex with metallic framework is the utility model is related to, belongs to water body environment wedge absorber
Technical field.
Background technology
Wedge has the property of the gradual transition of impedance, by setting cavity structure inside it, it is had resonance sound absorption concurrently
The characteristics of, there are excellent sound absorbing capabilities at low frequency compared with other sound absorption structures, be a kind of sound absorption structure of good performance.
On anechoic tank, large-scale anechoic room and naval vessels, wedge absorber structure is used widely.Especially it is laid in hull sound
On the siding without entrant sound of platform area, sonar platform area noise jamming can be effectively reduced, there is stronger engineer application
Value.China has carried out the research work of wedge absorber since the 1970s, and substantial amounts of work is concentrated mainly on to point
Split in the influence factor of sound absorbing capabilities, such as wedge length, material properties, internal cavities.But the in view of sound absorption in underwater environment
Wedge will also be acted on by hydraulic pressure, and with the increase of the depth of water, hydraulic pressure also gradually increases the active force of wedge, and this requires cavity
For wedge absorber on the premise of sound absorbing capabilities are met, itself will also have certain intensity.And existing wedge product is due to it
The limitation of self structure form and the strength of materials is unable to the operating environment suitable for high intensity pressure, such as high hydrostatic pressure ring
Border.
Utility model content
To solve existing wedge since the limitation of its own intensity is unable to the operation suitable for high hydrostatic pressure force environment
The problem of, the utility model develops a kind of while has excellent sound absorbing capabilities and the wedge absorber of structural strength, disclosure satisfy that
Underwater environment requirement, the technical solution of use are：
A kind of cavity wedge absorber complex with metallic framework, the wedge complex include sound absorption bottom plate A, wedge absorber
B and n metallic framework C；The wedge absorber B is fixedly connected on the top of sound absorption bottom plate A；The wedge absorber B includes base portion
1 and tip 2；The base portion 1 and tip 2 are integrally formed；The base portion 1 is in cuboid；The tip 2 is by n conical point
Portion's unit 21 is formed；21 array arrangement of tip unit is in the upper surface of base portion 1 and point upward；Each tip is single
Member 21 is internally provided with truncated cone-shaped cavity 22；The bottom of the truncated cone-shaped cavity 22 extends to the bottom of base portion 1, and the round platform
The top bore of shape cavity 22 reduces, and the tip of the central axial tip unit 21 along truncated cone-shaped cavity 22 is extended with strip
Shape cavity 23；The wall body surrounded inside the wall body of each tip unit 21 or by each tip unit 21 and base portion 1
Inside is all embedded with a metallic framework C；；The n is the integer not less than 1.
Further, the base portion 1 and the height ratio of tip 2 are 1:4~1:5.
Further, the height of the sum of height of the truncated cone-shaped cavity 22 and elongated cavity 23 and wedge absorber B it
Than for 3:5.
Further, the ratio between height of the truncated cone-shaped cavity 22 and elongated cavity 23 2:1.
Further, to meet different service conditions, the height of the wedge complex is 110mm~190mm.
Further, the thickness of the sound absorption bottom plate A is 10mm~20mm.
Further, the thickness of the metallic framework C is 3mm~5mm.
Further, the metallic framework C is through-hole foam titanium or fine-crystal spume aluminium alloy.
Further, the material of the sound absorption bottom plate A is polymer viscoelastic material；Preferably sound absorbent rubber or poly- ammonia
Ester.
Further, the material of the wedge absorber B is polymer viscoelastic material.Preferably sound absorbent rubber or poly- ammonia
Ester.
Further, the top of the tip unit 21 is tack or tip.
Further, 21 rectangular array of the tip unit arrangement.Such as arrange according to 4 × 4 rectangular arrays.
Further, each metallic framework C is embedded in each tip unit 21 in truncated cone-shaped or conical ground
Inside the wall body surrounded inside wall body or by each tip unit 21 and base portion 1.
Further, the length and width of the sound absorption bottom plate A is consistent with the length and width of wedge absorber B bottom surfaces.
The bottom plate A and wedge absorber B that absorbs sound in the utility model is separately formed, and is fixedly connected, and such as passes through water-fast glue sticking.
When wedge absorber B is molded in the utility model, metallic framework C is placed on the mould of wedge absorber B cavitys in advance,
It is retained in after wedge absorber B is poured in the entity of wedge absorber B.
The wall body of wedge absorber B refers to be enclosed by each tip unit 21 base portion 1 corresponding with its bottom in the utility model
Into part.
Wedge absorber B is by metallic framework C, entity structure (wall body of wedge absorber B) and internal cavities in the utility model
Form, entity structure bottom is arranged in cuboid-type, the structure (tip 2) that top is the point upward being made of cone according to array
Cloth forms (such as each cone is arranged with 4 × 4 square formations), and the top of each cone can be tip, or flush configuration；Gold
Belong to skeleton C to be located in wedge absorber B, arrange according to the position identical with the tip 2 of wedge absorber B and mode (such as with 4 × 4 sides
Battle array arrangement), and be completely immersed in the wall body of wedge absorber；Internal cavities are made of two parts：Bottom is the cone of trapezoid cross section
Structure (truncated cone-shaped), top are the sheet body structure (strip) of rectangular section, and bottom cavity one end penetrates through the rectangular of entity structure
Body portion, the other end are extended in cone at certain position, and top sheet body cavity continues to cone tip direction along bottom cavity
Extend certain distance.Metallic framework C can partly or entirely be riddled in wedge cone.
The utility model beneficial effect：
The utility model provides a kind of cavity wedge absorber complex with metallic framework, which both had
Excellent acoustically effective, while have certain structural strength concurrently.First, the utility model is by increasing the increase of via metal skeleton
The strength and stiffness of Wedge structure, to adapt to high hydrostatic pressure force environment；Second, the utility model is with excellent sound absorption
In the polyurethane elastomer or elastomeric material of energy, metallic framework is introduced, by the resistance to pressure of material, damping capacity and sound absorbing capabilities point
It is fitted on two kinds of materials of metallic framework and sound-absorbing material, such two kinds of materials can play respective advantage；3rd, this practicality is new
Metallic framework is embedded in inside wedge absorber by type, and sound-absorbing material (the sound absorbent rubber or polyurethane) assembling with wedge absorber forms mutual
Wear net structure so that sound-absorbing material riddles metallic framework hole, both combine closely, such a to improve the resistance for adding material
Buddhist nun's fissipation factor, and then increase loss of the sound wave in wedge, so as to improve the vibration damping sound absorbing capabilities of wedge；4th, this reality
There are a large amount of non-homogeneous photonic crystal structures with the interpenetrating network of new formation, form local resonance, damping-constraining, material
A variety of mechanism such as interior friction and the sound absorption technique deposited, the greatly acoustically effective of reinforcing material in wider frequency section；5th, this
Utility model forms the strong sound absorption structure of combination among the strong ones by the way that interpenetrating network is combined with wedge cavity structure, can be low
Excellent sound absorbing capabilities are realized in frequency and wider frequency section, under larger hydrostatic pressure；6th, the utility model is based on existing wedge
Cavity format, carries out acoustical behavior optimization design, draws the cavity format of the utility model, its underpart is truncated cone-shaped, and top is
Rectangular enclosure, simulation result show the wedge containing such a cavity format, in 1k~4kHz frequency ranges, than existing containing cavity point
Split minimum acoustic absorptivity and improve 57%；7th, the utility model structure type is simple, and material is easy to cut, and can be applicable in not
With the construction requirement for using position.8th, the utility model is applicable to underwater environment, as the underwater sound of anechoic tank, naval vessels is put down
Taiwan area domain etc..
Sound absorbing capabilities usually can be brought with influence while structural strength is being improved, such as by wedge own material into
Row improves and while improving structural strength can influence the sound absorbing capabilities of wedge, and the utility model wedge absorber complex by using
Interpenetrating network can overcome the influence brought when improving structural strength to sound absorbing capabilities, can increase to a certain extent on the contrary
Its strong sound absorbing capabilities.
Brief description of the drawings
Fig. 1 is the dimensional structure diagram of the utility model；
Fig. 2 is the top view of the utility model；
Fig. 3 is the sectional view in D-D directions along Fig. 2 of the utility model；
(A, absorb sound bottom plate；B, wedge absorber；C, metallic framework；1, base portion；2, tip；21, tip unit；22, truncated cone-shaped
Cavity；23, elongated cavity).
Embodiment
The utility model is described further with reference to specific embodiment, following embodiments will be helpful to this area
Technical staff further understands the utility model, but does not limit the utility model in any form.
Embodiment one
Illustrate present embodiment with reference to Fig. 1-3, a kind of cavity wedge absorber with metallic framework of present embodiment is compound
Body, the wedge complex include sound absorption bottom plate A, wedge absorber B and n metallic framework C；Wedge absorber B is fixedly connected on sound absorption
The top of bottom plate A；Wedge absorber B includes base portion 1 and tip 2；Base portion 1 and tip 2 are integrally formed；Base portion 1 is in cuboid；Tip
2 are made of the tip unit 21 of n cone；Unit 21 array arrangement in tip is in the upper surface of base portion 1 and point upward；Often
A tip unit 21 is internally provided with truncated cone-shaped cavity 22；The bottom of truncated cone-shaped cavity 22 extends to the bottom of base portion 1, and round platform
The top bore of shape cavity 22 reduces, and the tip of the central axial tip unit 21 along truncated cone-shaped cavity 22 is extended with strip
Cavity 23；In the wall body surrounded inside the wall body of each tip unit 21 or by each tip unit 21 and base portion 1
Portion is all embedded with a metallic framework C；N is the integer not less than 1.
Sectional view such as Fig. 3, Fig. 3 of wedge complex in present embodiment are along each horizontally-arranged tip unit center axis
Sectional view, the sectional view of vertical setting of types is identical with the structure in Fig. 3.The lower section of each tip unit 21 is corresponding in present embodiment
One truncated cone-shaped cavity 22, but the corresponding each 22 not intercommunication of truncated cone-shaped cavity in the lower section of each tip unit 21.
Present embodiment tip unit 21 can be arranged with rectangular array, and present embodiment is with tip unit 21 according to 4 × 4
The mode of square formation arrangement is for example, the array of other forms is also suitable for the utility model, the as single point as n=1
Split structure.
In present embodiment each metallic framework C can only inside the wall body of each tip unit 21 or
Inner wall surface, can also be embedded in the wall body inside surrounded by each tip unit 21 and base portion 1 or inner wall surface, i.e. metal
The bottom of skeleton C be able to can also be extended in the wall body of base portion 1 in tip unit 21, can also extend directly to base portion
1 bottom (as shown in Figure 3).
Each metallic framework C can be in truncated cone-shaped embedded in the wall of each tip unit 21 in present embodiment
Internal portion, can also be in the wall body for being embedded in and being surrounded by each tip unit 21 and base portion 1 conically inside.Wherein work as gold
When belonging to skeleton C in truncated cone-shaped in the wall body inside of each tip unit 21, metallic framework C can be round truncated cone-shaped cavity
22 arrangements, i.e., the bottom direction that the top of metallic framework C can be using the top of circular cavity 22 as starting point to base portion 1 extend to
The bottom of base portion 1, as shown in Figure 3.When metallic framework C in conical is embedded in the wall body inside of each tip unit 21,
The top of metallic framework C can extend to the top of tip unit 21.
Each tip unit 21 refers to base portion 1 and tip unit 21 in Fig. 3 with the wall body that base portion 1 surrounds in present embodiment
The wall body being made of one piece, that is, surround internal cavities (truncated cone-shaped cavity 22 and the wall body of unprecedented 23) of strip.
The bottom plate A and wedge absorber B that absorbs sound in present embodiment is separately formed, and is fixedly connected, and such as passes through water-fast glue sticking.
During the sound wedge B shapings of present embodiment, metallic framework C is placed on the mould of wedge absorber B cavitys in advance,
Wedge absorber B is poured to be retained in the entity of wedge absorber B afterwards.The metallic framework C of present embodiment is steeped using through hole
Foam metal.
The length and width of sound absorption bottom plate A can be consistent with the length and width of wedge absorber B bottom surfaces in present embodiment.
The wall body of wedge absorber B refers to be enclosed by each tip unit 21 base portion 1 corresponding with its bottom in present embodiment
Into part.
Wedge absorber B is by metallic framework C, entity structure (wall body of wedge absorber B) and internal cavities in the utility model
Form, entity structure bottom is arranged in cuboid-type, the structure (tip 2) that top is the point upward being made of cone according to array
Cloth forms (such as each cone is arranged with 4 × 4 square formations), and the top of each cone can be tip, or flush configuration；Gold
Belong to skeleton C to be located in wedge absorber B, arrange according to the position identical with the tip 2 of wedge absorber B and mode (such as with 4 × 4 sides
Battle array arrangement), and be completely immersed in the wall body of wedge absorber；Internal cavities are made of two parts：Bottom is the cone of trapezoid cross section
Structure (truncated cone-shaped), top are the sheet body structure (strip) of rectangular section, and bottom cavity one end penetrates through the rectangular of entity structure
Body portion, the other end are extended in cone at certain position, and top sheet body cavity continues to cone tip direction along bottom cavity
Extend certain distance.Metallic framework C can partly or entirely be riddled in wedge cone.
The wedge absorber complex of present embodiment both has excellent acoustically effective, while it is strong to have certain structure concurrently
Degree.
The wedge absorber complex of present embodiment by increase via metal skeleton add Wedge structure intensity and
Rigidity, to adapt to high hydrostatic pressure force environment.
Via metal skeleton is embedded in inside wedge absorber by the wedge absorber complex of present embodiment, with wedge absorber
Sound-absorbing material (sound absorbent rubber or polyurethane) forms interpenetrating network so that and sound-absorbing material riddles metallic framework hole, and two
Person combines closely, such a to improve the damping loss factor for adding material, and then adds loss of the sound wave in wedge, so that
Improve the vibration damping sound absorbing capabilities of wedge.
There are a large amount of non-homogeneous phonon crystal knots in the interpenetrating network that the wedge absorber complex of present embodiment is formed
Structure, forms local resonance, damping-constraining, a variety of mechanism such as interior friction of material and the sound absorption technique deposited, the pole in wider frequency section
The acoustically effective of the earth reinforcing material；
The wedge absorber of present embodiment forms combination among the strong ones by the way that interpenetrating network is combined with wedge cavity structure
Strong sound absorption structure, can realize excellent sound absorbing capabilities in low frequency and wider frequency section, under larger hydrostatic pressure.
The wedge absorber complex of present embodiment is based on existing wedge cavity format, carries out acoustical behavior optimization and sets
Meter, draws the cavity format of the utility model, its underpart is truncated cone-shaped, and top is rectangular enclosure, and simulation result shows to contain this
The wedge of kind cavity format, in 1k~4kHz frequency ranges, 57% is improved than the existing minimum of wedge containing cavity acoustic absorptivity.
The wedge absorber complex structure form of present embodiment is simple, and material is easy to cut, and can be applicable in different uses
The construction requirement of position.
The wedge absorber complex of present embodiment is suitable for underwater environment, such as the underwater sound platform area of anechoic tank, naval vessels
Domain etc..
By taking the practical application in hull sonar transducer space as an example, the cavity wedge absorber with metallic framework of present embodiment is utilized
Complex, the squab panel of sonar platform area is adhered to and by sonar platform area and upper using adhesive by wedge absorber complex
The separated levelling bench of layer building fore body.Adhesive wants water-fast and provides certain adhesive strength.To adapt to construction of special positions,
Wedge absorber should try one's best when cutting and destroy internal cavities less.
Embodiment two
Present embodiment is that the base portion 1 in embodiment one is further limited with tip 2, base portion 1 in present embodiment
Height ratio with tip 2 is 1:4~1:5.
The base portion 1 and the height ratio of tip 2 limited in present embodiment is 1:4~1:5, and wherein base portion 1 and tip 2
Height ratio be 1：Effect is best when 4.Above parameter is by simulation optimization, and the acoustic absorptivity in working frequency range drawn is bent
The optimal result of line.
Embodiment three
Present embodiment is further to the dimension scale of the wedge absorber B of any embodiment in embodiment one to two
Limit, the ratio between the sum of height of truncated cone-shaped cavity 22 and elongated cavity 23 and height of wedge absorber B are in present embodiment
3:5。
The ratio that present embodiment limits is by simulation optimization, and the absorption coefficient curve in working frequency range drawn is optimal
Result.Embodiment four
Present embodiment is further to the dimension scale of the wedge absorber B of any embodiment in embodiment one to three
Limit, the ratio between height of truncated cone-shaped cavity 22 and elongated cavity 23 2 in present embodiment:1.
It is by simulation optimization that present embodiment, which limits ratio, and the absorption coefficient curve in working frequency range drawn is optimal
As a result.Embodiment five
Present embodiment is that the height of the wedge complex of any embodiment in embodiment one to four is further limited
Fixed, the height of wedge complex is 110mm~190mm in present embodiment.
The height for the wedge complex that present embodiment limits can meet different use feelings as 110mm~190mm
Condition, can select various sizes of wedge complex according to different using position, requirement, use environment etc..
Embodiment six
Present embodiment is that the thickness of the sound absorption bottom plate A of any embodiment in embodiment one to five is further limited
Fixed, the thickness for the bottom plate A that absorbs sound in present embodiment is 10mm~20mm.
For the thickness for the sound absorption bottom plate A that present embodiment limits as 10mm~20mm, the purpose for the bottom plate that absorbs sound is closure sound absorption
Wedge bottom, ensures that wedge absorber cavity is closed waterproof, the thickness range for the bottom plate that absorbs sound is to consider simulation result, engineering
Drawn using conditions such as, installation spaces.
Embodiment seven
Present embodiment is that the thickness of the metallic framework C of any embodiment in embodiment one to six is further limited
Fixed, the thickness of metallic framework C is 3mm~5mm in present embodiment.
For the thickness for the metallic framework C that present embodiment limits as 3mm~5mm, which is by simulation optimization, is drawn
The optimal result of absorption coefficient curve in working frequency range.
Embodiment eight
Present embodiment is that the material of the metallic framework C of any embodiment in embodiment one to seven is further limited
Fixed, metallic framework C is through-hole foam titanium or fine-crystal spume aluminium alloy in present embodiment.
As through-hole foam titanium or fine-crystal spume aluminium alloy, which all has the metallic framework C that present embodiment limits
The advantages that density is small, specific surface area is big, sound insulation and noise reduction effect is good, wherein, through-hole foam titanium is in specific strength, corrosion resistance etc.
Better than fine-crystal spume aluminium alloy, but cost is higher.
Embodiment nine
Present embodiment is the material to the sound absorption bottom plate A and wedge absorber B of any embodiment in embodiment one to eight
Material further limits, and the material for the bottom plate A and wedge absorber B that absorbs sound in present embodiment is polymer viscoelastic material, preferably
For sound absorbent rubber or polyurethane.
Present embodiment limits the material of sound absorption bottom plate A as polymer viscoelastic material, utilizes the viscoelastic of high molecular material
In-fighting characteristic, is changed into thermal dissipation, wherein sound absorbent rubber or polyurethane has higher by the acoustic energy of absorption or mechanical energy
Damper mechanism, and it is easy to processing and forming, there is excellent corrosion resistance.
Meanwhile present embodiment introduces metal in the polyurethane elastomer or elastomeric material with excellent sound absorption performance
Skeleton, the resistance to pressure of material, damping capacity and sound absorbing capabilities is assigned on two kinds of materials of metallic framework and sound-absorbing material, so
Two kinds of materials can play respective advantage.
Embodiment ten
Present embodiment is into one to the end shape of the tip unit 21 of any embodiment in embodiment one to nine
Step limits, and the top of tip unit 21 is tack or tip in present embodiment.
Present embodiment limits the top of tip unit 21 as tack or tip, can be according to the use environment and purposes of wedge
Etc. it is comprehensive select, wherein under high hydrostatic pressure, the tip of tack and the contact area of water are relatively large, disperse water pressure
Effect it is more preferably best.
Embodiment 11
Present embodiment is that the design parameter of each component is further limited in embodiment one, is absorbed sound in present embodiment
The total height of wedge complex is 120mm, and sound absorption base plate thickness is 20mm, wedge absorber height 100mm.Wherein wedge absorber is real
The height of body 7 is 20mm, and 8 height is 80mm；The height of wedge cavity 5 is 40mm, and 6 height is 20mm.
The material of sound absorption bottom plate A and wedge absorber B is polyurethane material in present embodiment, and absorb sound bottom plate A and sound absorption
Wedge B is attached using omnipotent seccotine, and metallic framework is 3D printing through-hole foam titanium.
The wedge absorber complex of present embodiment, under 3MPa hydrostatic pressures, in working frequency range 500-1000Hz
Maximum acoustic absorptivity can reach 0.6.
Embodiment 12
Present embodiment and embodiment ten difference lies in：The total height of wedge absorber complex is 160mm, and absorb sound bottom plate
Thickness is 10mm, and wedge absorber is highly 150mm.Wherein the height of wedge absorber entity 7 is 30mm, and 8 height is 120mm；
The height of wedge cavity 5 is 60mm, and 6 height is 30mm.
The wedge absorber complex of present embodiment, under 3MPa hydrostatic pressures, in working frequency range 500-1000Hz
Maximum acoustic absorptivity can reach 0.8.
Embodiment 13
Present embodiment and embodiment 11 difference lies in：Metallic framework is the fine-crystal spume aluminium alloy used.
Although the utility model is disclosed as above with preferred embodiment, it is not limited to the utility model, appoints
What person skilled in the art, without departing from the spirit and scope of the utility model, can do various changes and modification, therefore
The scope of protection of the utility model should be subject to what claims were defined.
Claims (10)
1. a kind of cavity wedge absorber complex with metallic framework, it is characterised in that including sound absorption bottom plate (A), wedge absorber
(B) and n metallic framework (C)；The wedge absorber (B) is fixedly connected on the top of sound absorption bottom plate (A)；The wedge absorber
(B) base portion (1) and tip (2) are included；The base portion (1) and tip (2) are integrally formed；The base portion (1) is in cuboid；It is described
Tip (2) is made of the tip unit (21) of n cone；Upper table of tip unit (21) array arrangement in base portion (1)
Face and point upward；Each tip unit (21) is internally provided with truncated cone-shaped cavity (22)；The truncated cone-shaped cavity (22)
Bottom extend to the bottom of base portion (1), and the top bore of the truncated cone-shaped cavity (22) reduces, and along truncated cone-shaped cavity
(22) tip of central axial tip unit tip unit (21) is extended with elongated cavity (23)；Each tip unit
(21) gold is embedded with inside the wall body surrounded inside wall body or by each tip unit (21) and base portion (1)
Belong to skeleton (C)；The n is the integer not less than 1.
2. wedge complex according to claim 1, it is characterised in that the base portion (1) and the height ratio of tip (2) are
1:4~1:5.
3. wedge complex according to claim 1, it is characterised in that the truncated cone-shaped cavity (22) and elongated cavity
(23) the ratio between the sum of height and height of wedge absorber (B) are 3:5.
4. wedge complex according to claim 1, it is characterised in that the truncated cone-shaped cavity (22) and elongated cavity
(23) the ratio between height 2:1.
5. wedge complex according to claim 1, it is characterised in that the height of the wedge complex for 110mm~
190mm。
6. wedge complex according to claim 1, it is characterised in that it is described sound absorption bottom plate (A) thickness for 10mm~
20mm。
7. wedge complex according to claim 1, it is characterised in that the thickness of the metallic framework (C) for 3mm~
5mm。
8. wedge complex according to claim 1, it is characterised in that the metallic framework (C) for through-hole foam titanium or
Person's fine-crystal spume aluminium alloy.
9. wedge complex according to claim 1, it is characterised in that the top of the tip unit (21) for tack or
Tip.
10. wedge complex according to claim 1, it is characterised in that each metallic framework (C) in truncated cone-shaped or
Enclosed conically inside the wall body of each tip unit (21) or by each tip unit (21) with base portion (1)
Into wall body inside.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721270658.XU CN207250135U (en) | 2017-09-29 | 2017-09-29 | A kind of cavity wedge absorber complex with metallic framework |
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| CN201721270658.XU CN207250135U (en) | 2017-09-29 | 2017-09-29 | A kind of cavity wedge absorber complex with metallic framework |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107578767A (en) * | 2017-09-29 | 2018-01-12 | 哈尔滨工程大学船舶装备科技有限公司 | A kind of cavity wedge absorber complex with metallic framework |
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2017
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107578767A (en) * | 2017-09-29 | 2018-01-12 | 哈尔滨工程大学船舶装备科技有限公司 | A kind of cavity wedge absorber complex with metallic framework |
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