CN101644626B - Array bracket - Google Patents
Array bracket Download PDFInfo
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- CN101644626B CN101644626B CN2009101448955A CN200910144895A CN101644626B CN 101644626 B CN101644626 B CN 101644626B CN 2009101448955 A CN2009101448955 A CN 2009101448955A CN 200910144895 A CN200910144895 A CN 200910144895A CN 101644626 B CN101644626 B CN 101644626B
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- array bracket
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- 239000002184 metal Substances 0.000 claims description 15
- 239000000725 suspension Substances 0.000 claims description 15
- 208000012868 Overgrowth Diseases 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 24
- 238000001093 holography Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 abstract 2
- 238000005516 engineering process Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The present invention belongs to the technical field of engine pedestal test, and in particular relates to a near field acoustical holography test bracket structure used in engine pedestal test environment. The bracket comprises fixing members and connecting members, the adjacent fixing members are connected by the connecting members, and the fixing members are provided with supported holes. As known from the above technical scheme, in the invention, microphones can be put into the supported holes of the fixing members which are connected by the connecting members, and the number and structure of the fixing members and the connecting members can be determined according to the concrete requirement of the test, thus, the near field acoustical holography test bracket structure provided by the present invention has simple structure and changeable test structure, therefore, the test effect is better.
Description
Technical field
The invention belongs to the engine bench test technical field, be specifically related to a kind of near field acoustic holography test bracket structure that is used for the engine bench test environment.
Background technology
Based on planar near-field acoustical holography (NAH) technology of Fourier acoustics be a kind of near the measurement face on testee surface the recording holographic data, then by the measuring technology of converter technique reconstruction of three-dimensional sound field, be mainly used in the acoustic experiments such as identification of noise source.
When carrying out the planar near-field acoustical holography test, need to use a microphone array usually, array size need be determined according to the concrete condition of testing equipment, subjects and experimental enviroment, the measurement face that this microphone array is formed needs bracket supports, the supporting structure complexity of common buying, reliability is not high, and be universal design, this support is not considered the application demand of concrete test environment, thereby causes testing poor effect.
Summary of the invention
The purpose of this invention is to provide a kind of type variable array bracket, its simple structure, and also structure can be adjusted according to concrete test environment.
For achieving the above object, the present invention has adopted following technical scheme: a kind of array bracket, this support comprise fixture and web member, and the fixture between adjacent links together by web member, and described fixture is provided with supported hole.
As shown from the above technical solution, in the present invention, microphone can be placed in the supported hole of fixture, described fixture links together by web member, fixture and number of connecting pieces and structure are then decided along with the specific requirement of test, this shows that simple structure of the present invention and test structure are variable, so its test effect is better.
Description of drawings
Fig. 1 is the structural representation of array bracket;
Fig. 2 is the structural representation of fixture;
Fig. 3 is the structural representation of upright arm;
Fig. 4 is the structural representation of bearing;
Fig. 5 is the vertical view of Fig. 4;
Fig. 6 is the structural representation of external member;
Fig. 7 is the left view of Fig. 6;
Fig. 8 is the upward view of Fig. 6;
Fig. 9 is the structural representation of suspension;
Figure 10 is the left view of Fig. 9;
Figure 11 is the vertical view of Fig. 9.
Embodiment
As shown in Figure 1, a kind of array bracket, this support comprise fixture 10 and web member 20, and the fixture 10 between adjacent links together by web member 20, and described fixture 10 is provided with supported hole 11.
As shown in Figure 1, 2, described web member 20 is a metal bar, and fixture 10 is a baton round, and described baton round is provided with end with metal bar and is embedded therein recess 12.
Microphone array among Fig. 1 is promptly combined by the metal bar of different length and the rigid plastic balls of placement microphone.The recess 12 that all has up and down of baton round is connected with metal bar, and the centre of baton round is provided with supported hole 11 and places microphone, and described supported hole 11 is a through hole.The metal spillikin of different length is in order to satisfy different accuracy, and the different needs of analyzing the frequency bands test can change the size of microphone array column unit thus neatly; Simultaneously also can be according to actual needs and appointed condition, change the size of microphone array test area flexibly, to realize reasonable, economic survey area.Recess 12 on described metal bar and the baton round adopts interference fit, and microphone and support holes 11 also adopt interference fit to play fixation.
Further, described web member 20 is fixed on the upright arm 30, and upright arm 30 is fixed on the slide mechanism, and described slide mechanism is arranged on the bearing 40 and adjustable positions.The structural adjustment ability of the present invention that is arranged so that of slide mechanism is further enhanced, thereby helps further improving the test effect.
As shown in Figure 2, described upright arm 30 is a direct rod shape, be provided with equably on the upright arm 30 for web member 20 and be placed in wherein hugging 31, upright arm 30 is provided with retaining tooth 32 in the side towards fixture 10 of hugging 31, described retaining tooth 32 is provided with the screw 321 that runs through its body, also is provided with the screw 33 that is fixed on the slide mechanism on the described upright arm 30.
It is on the two parallel upright arms 30 that metal bar among Fig. 1 promptly is fixed on, described metal bar is arranged in the hugging 31, bolt passes the screw 321 of retaining on the tooth 32 metal bar is pressed abd fixed in the hugging 31, and is same, and bolt passes screw 33 on the upright arm 30 and will found arm 30 and be fixed on the slide mechanism.
Shown in Fig. 4,6,9, described bearing 40 comprises vertical rod 41 and is arranged on the leg 42 of vertical rod 41 downsides, external member 50 in the slide mechanism is set in the vertical rod 41 and can moves along the direction that vertical rod 41 limits, and the side of external member 50 is installed with suspension 60, and described upright arm 30 is fixed on the suspension 60.
Further, the downside of described leg 42 is provided with cushion blocking 43.
As shown in Figure 4, bearing 40 is used to support microphone array, bearing 40 is made up of vertical rod 41 and leg 42, described vertical rod 41 is the higher metal straight-bar of a rigidity, leg 42 is the triangle rack and panel construction, and the bottom of leg 42 has the rubber mount layer, the ground vibration amplitude that is delivered to this array bracket to be used to decay, reduce the influence of ground vibration to measuring accuracy, can also the suit scale pan on the described bearing 40 to increase its stability.Shown in Fig. 6,9, described slide mechanism comprises external member 50 and suspension 60, and external member 50 is set in the vertical rod 41 and can moves up and down along the direction perpendicular to bearing 40, moves up and down thereby make external member 50 can drive microphone array.
As preferred version of the present invention, shown in Fig. 6～8, described external member 50 comprises the sliding sleeve 51 that is set in the vertical rod 41, and sliding sleeve 51 is provided with the screw 511 that runs through its body, one epitaxial lateral overgrowth of sliding sleeve 51 is stretched and is formed fixed arm 52, described fixed arm 52 and suspension 60 nested being fixed together.
Sliding sleeve 51 on the external member 50 cooperates in the sliding sleeve mode with vertical rod 41 on the bearing 40, guaranteed that aforesaid microphone array is listed in moving perpendicular to the ground direction, the sliding sleeve fit system makes that also microphone array can be that center line rotates with vertical rod 41 simultaneously, and bolt can pass the screw 51 1 on the sliding sleeve 51 and sliding sleeve 51 is fixed in the vertical rod 41; Fixed arm 52 on the external member 50 is the cylindrical entity of a bottom surface perpendicular to ground, and rigidity is higher, therefore helps the support of array.
Shown in Fig. 9～11, described fixed arm 52 is column, one end of suspension 60 is set to fixed cover 61, described fixed cover 61 is provided with hole 612 fixed arm 52 is nested and that be fixed therein, the other end of suspension 60 stretches out and is that cantilever 62, cantilever 62 make upright arm 30 mounted thereto be level or vertical two states.
Fixed arm 52 on described fixed cover 61 and the external member 50 is nested the cooperation, fixed arm 52 circumferentially offers screw 521 every 90 degree in its upper edge, circumference side, and fixed cover 61 also offer on its all side with aforementioned fixation arm 52 on screw 521 corresponding screws 611, thus after fixed arm 52 is nested in the fixed cover 61, bolt passes the two corresponding screw and the two is fixed together tightly, this fixed form also makes microphone array have four kinds of orientation adjustable around fixed arm 52 simultaneously, thereby can make microphone array be fixed in different test surfaces.
Be provided with connection buttress brace 63 each other between the described cantilever 62.
As shown in Figure 9, the both sides of fixed cover 61 are stretched out two cantilevers 62 and are connected with upright arm 30, are provided with buttress brace 63 between two cantilevers 62 to increase its stability.
Further, as shown in figure 10, the end toward the outer side of described cantilever 62 is provided with upright arm 30 is fixed on screw 621 on the cantilever 62, and described screw 621 is set to two groups, wherein arranges in horizontal direction for one group, and another group is vertical direction and arranges.
Screw 621 on the above-mentioned cantilever 62 is corresponding with the screw 33 on being arranged on upright arm 30, can be fixed on the cantilever 62 founding arm 30 by coupling bolt, also is about to aforesaid microphone array and is fixed on the slide mechanism.
In sum, described metal bar and baton round are combined into microphone array, metal bar is fixed on again on the upright arm 30,30 on described upright arm is fixed on the cantilever 62 of suspension 60, suspension 60 cooperates with fixed arm 52 nestings on the external member 50 by fixed cover 61 again, 51 of sliding sleeves on the external member 50 cooperate in the sliding sleeve mode with vertical rod 41 on the bearing 40, and final metal bar, baton round, upright arm 30, bearing 40, external member 50 and suspension 60 have constituted a complete array bracket.
Array bracket among the present invention has been realized moving up and down and rotatablely moving around stationary shaft of microphone array, the invention enables test plane itself also can realize the fixing of vertical, horizontal both direction simultaneously, therefore the microphone array among the present invention can realize to engine comprise front end face, upper and lower surface and about the measurement of all surfaces on surface, have great practicality and applicability in limited places, space such as automotive engine test benches.
Claims (8)
1. array bracket, it is characterized in that: this support comprises fixture (10) and web member (20), links together by web member (20) between the adjacent fixture (10), and described fixture (10) is provided with supported hole (11); Described web member (20) is fixed on the upright arm (30), and upright arm (30) is fixed on the slide mechanism, and described slide mechanism is arranged on bearing (40) and goes up and adjustable positions; Described bearing (40) comprises vertical rod (41) and is arranged on the leg (42) of vertical rod (41) downside, external member in the slide mechanism (50) is set in vertical rod (41) and goes up also and can move along the direction that vertical rod (41) limits, the side of external member (50) is installed with suspension (60), and described upright arm (30) is fixed on the suspension (60).
2. array bracket according to claim 1 is characterized in that: described web member (20) is a metal bar, and fixture (10) is a baton round, and described baton round is provided with end with metal bar and is embedded therein recess (12).
3. array bracket according to claim 1, it is characterized in that: described upright arm (30) is a direct rod shape, be provided with equably on the upright arm (30) for web member (20) and be placed in wherein hugging (31), upright arm (30) is provided with retaining tooth (32) in the side towards fixture (10) of hugging (31), described retaining tooth (32) is provided with the screw (321) that runs through its body, also is provided with the screw (33) that is fixed on the slide mechanism on the described upright arm (30).
4. array bracket according to claim 1 is characterized in that: the downside of described leg (42) is provided with cushion blocking (43).
5. array bracket according to claim 1, it is characterized in that: described external member (50) comprises the sliding sleeve (51) that is set in the vertical rod (41), sliding sleeve (51) is provided with the screw that runs through its body, one epitaxial lateral overgrowth of sliding sleeve (51) is stretched and is formed fixed arm (52), described fixed arm (52) and nested being fixed together of suspension (60).
6. array bracket according to claim 5, it is characterized in that: described fixed arm (52) is column, one end of suspension (60) is set to fixed cover (61), described fixed cover (61) is provided with hole fixed arm (52) is nested and that be fixed therein, the other end of suspension (60) stretches out and is that cantilever (62), cantilever (62) make upright arm (30) mounted thereto be level or vertical two states.
7. array bracket according to claim 6 is characterized in that: be provided with connection buttress brace (63) each other between the described cantilever (62).
8. array bracket according to claim 6, it is characterized in that: the end toward the outer side of described cantilever (62) is provided with upright arm (30) is fixed on screw (621) on the cantilever (62), described screw (621) is set to two groups, wherein arrange in horizontal direction for one group, another group is vertical direction and arranges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101448955A CN101644626B (en) | 2009-09-09 | 2009-09-09 | Array bracket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101448955A CN101644626B (en) | 2009-09-09 | 2009-09-09 | Array bracket |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101644626A CN101644626A (en) | 2010-02-10 |
| CN101644626B true CN101644626B (en) | 2011-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101448955A Active CN101644626B (en) | 2009-09-09 | 2009-09-09 | Array bracket |
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| Country | Link |
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| CN (1) | CN101644626B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105191345B (en) * | 2013-03-29 | 2016-11-02 | 日产自动车株式会社 | Mike supporting arrangement is used in sound source detection |
| CN104776877B (en) * | 2015-04-01 | 2017-05-03 | 浙江大学 | Three-dimensional microphone array tensioning positioning instrument |
| CN107271139B (en) * | 2017-08-14 | 2023-07-28 | 中国航空工业集团公司哈尔滨空气动力研究所 | Combined microphone array device |
| CN108933987A (en) * | 2018-06-28 | 2018-12-04 | 上海工程技术大学 | A kind of deformable microphone array bracket |
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2009
- 2009-09-09 CN CN2009101448955A patent/CN101644626B/en active Active
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| Publication number | Publication date |
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| CN101644626A (en) | 2010-02-10 |
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