CN203364958U - Acoustical power testing support - Google Patents
Acoustical power testing support Download PDFInfo
- Publication number
- CN203364958U CN203364958U CN 201320384868 CN201320384868U CN203364958U CN 203364958 U CN203364958 U CN 203364958U CN 201320384868 CN201320384868 CN 201320384868 CN 201320384868 U CN201320384868 U CN 201320384868U CN 203364958 U CN203364958 U CN 203364958U
- Authority
- CN
- China
- Prior art keywords
- acoustical power
- power testing
- testing jig
- testing
- test
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The utility model discloses an acoustical power testing support including a flat net-shaped frame; a testing device positioning support connected to the flat net-shaped frame flexibly for mounting and fixing a testing device. The acoustical power testing support is high in load-bearing capability, so that stability of overall arrangement of acoustical power testing points is enhanced. Deformation is avoided and the testing points keep still in an acoustical power testing process. The acoustical power testing support is accurate and stable in testing and positioning, simple in structure and convenient to install, and has comparatively small influence on an acoustic environment and improves acoustical power testing accuracy further.
Description
Technical field
The utility model relates to the acoustical testing technical field, and is particularly related to a kind of acoustical power testing jig.
Background technology
The test of acoustical power be widely used in automobile, Aero-Space, household electrical appliance, computing machine and communicate by letter, the every field such as industrial products, product is carried out to noise testing and acoustics characteristic test.A kind of comparatively common acoustical power method of testing is the free field method, sound source is placed in to semi-free field (semianechoic room), on the hemisphere face of test centered by sound source or other there is the sound pressure level of some well-distributed pointses on certain symmetric test surfaces, and then try to achieve sound power level.
The form of acoustic current power test frame is mostly the arc support guide rail and forms, yet utilize existing acoustical power testing jig to carry out the acoustical power test, has following shortcoming:
1. according to the difference of sound source size to be measured, the size of needed acoustical power testing jig is also just different.Curved appearance restriction due to support guide, when test large-size sound source, just need to use the larger acoustical power testing jig of size, but due to Action of Gravity Field, oversize acoustical power testing jig is because the gravity of self adds that the weight of acoustical power proving installation produces deformation, cause the position of acoustical power test point to be offset, affect the accuracy of test position fix.
2. the same restriction of the curved appearance due to the arc support guide rail, in the process of its integral cutting moulding, higher to the requirement of machining precision, and also required board dimension is larger, can cause the waste of surplus material after cutting, this has just increased manufacture difficulty and the manufacturing cost of acoustical power testing jig.
3. for large-sized acoustical power frame, the material section of supporting structure is long-pending also need relatively large, also can the phase strain large on the impact of acoustic environment
The utility model content
In view of this, the purpose of this utility model is to provide a kind of acoustical power testing jig, and large on the sound field impact in order to solve in prior art the acoustical power testing jig, bearing capacity is little, poor stability, manufacturing cost high-technology problem.
The acoustical power testing jig that the utility model provides, it comprises: the plane reticular framework; The proving installation locating rack, be movably connected on described plane reticular framework, so that the fixing test device to be installed.
Further, described plane reticular framework is spliced by a plurality of perforated plate bending parts.
Further, described plane reticular framework is the netted structure of polygon or circular reticulate texture.
In sum, the acoustical power testing jig that the utility model provides adopts lifting mode, bearing capacity is strong, improves acoustical power and test the stability that the layout of measuring point is set up, the phenomenon of can not caving in the sound power test process, test point can not be offset by occurrence positions, the test position fix accurate stable, and simple in structure, easy installation and removal, and less on the acoustic enviroment impact, further improved the accuracy of acoustical power test.For existing acoustical power testing jig, be mostly fixed measure, testing radius is immutable, and point position is fixed, and the utility model is the acoustical power testing jig of two kinds of different radiis of compatibility simultaneously, and carrying out the different radii test for needs provides convenience.
The accompanying drawing explanation
Figure 1 shows that the structural representation of acoustical power testing jig in prior art;
Figure 2 shows that the structural representation of the acoustical power testing jig that the utility model one embodiment provides;
Figure 3 shows that the side view of the acoustical power testing jig that the utility model one embodiment provides.
Embodiment
Refer to Fig. 1, it is depicted as the structural representation of acoustical power testing jig in prior art.
As shown in Figure 1, acoustical power testing jig 100 comprises a plurality of arc support guide rails 110, and an end of described a plurality of arc support guide rails 110 links together, and integral body is the part ball-type.While utilizing this acoustical power testing jig 100 to be tested, acoustical power testing jig 100 is placed on the ground of semianechoic room, and the acoustical power proving installation, as microphone, is fixed on the spherical arc support guide rail 110 of part and is tested.
During the existing acoustical power testing jig sound source larger in test size, himself size is also wanted corresponding expansion, and then cause acoustical power testing jig 100 to cause acoustical power testing jig 100 to produce bulk deformations because of self weight and the weight of proving installation, and then cause the skew of proving installation anchor point, and then accuracy and the stability of test have been affected.In addition, because existing acoustical power testing jig 100 needs to carry out the integral cutting moulding in processing and fabricating, the phenomenon of waste of material is serious, causes manufacturing cost higher.
And the utility model is being considered on the basis of above problem, adopted the plane reticular structural design, and the proving installation locating rack of cooperation activity, when test, adopt lifting mode to test sound source to be measured, thereby avoided when test large-size sound source, because own wt and proving installation weight cause the situation of acoustical power testing jig distortion, guaranteed the Stability and veracity of test position fix.
For the purpose of this utility model, feature are become apparent, below in conjunction with accompanying drawing, embodiment of the present utility model is further described.
Refer to Fig. 2 and in conjunction with referring to Fig. 3, it is depicted as the structural representation of the acoustical power testing jig that the utility model one embodiment provides.
Acoustical power testing jig 200, it comprises: plane reticular framework 210 and proving installation locating rack 220, proving installation locating rack 220 is movably connected on described plane reticular framework 210, so that the fixing test device to be installed.
Adopted the plane reticular structural design, and coordinate proving installation locating rack for convenience detach, when test, only acoustical power testing jig 200 mast-ups need be located on sound source to be measured, thereby when test large-size sound source, on the one hand acoustical power testing jig 200 self size needn't be along with the corresponding expansion of sound source to be measured, and then the problem that can not deform, on the other hand, even under special circumstances, while needing acoustical power testing jig 200 to increase size, due to its plane reticular design, the proving installation locating rack of cooperation activity, and employing lifting test mode, therefore avoided the generation of acoustical power testing jig bulk deformation.
Therefore the acoustical power testing jig that utilizes the utility model embodiment to provide all can avoid causing because of own wt and proving installation weight the situation of acoustical power testing jig distortion in above-mentioned two situations, guaranteed the Stability and veracity of test position fix.
In addition, in used time not, proving installation locating rack 220 can be removed, and plane reticular framework 210 can be placed in acoustic enviroment, on acoustic enviroment without impact, easy installation and removal.
In an embodiment of the present utility model, described plane reticular framework 210 is spliced by a plurality of perforated plate bending parts.The acoustical power testing jig that the aluminium cutting adopted compared to existing technology forms, its reflection to sound field is little, has further reduced the impact on sound source to be measured, has improved the accuracy of test.
In an embodiment of the present utility model, described plane reticular framework 210 is the netted structure of polygon or circular reticulate texture.Adopt reticulate texture, measure radius variable, meet the needs of different measuring radius and measurement standard.But the utility model is not limited thereto, allly can realize that the planform of above-mentioned functions all is included in the utility model scope.
In sum, the main part of the acoustical power testing jig that the utility model embodiment provides has adopted the plane reticular structural design, and coordinates dismountable proving installation locating rack, forms the acoustical power testing jig.When sound source being carried out to the acoustical power test, this acoustical power testing jig mast-up can be located on this sound source to be measured, on the plane reticular structural framing, location placement acoustical power proving installation is tested.Owing to adopting the detachable proving installation locating rack of plane reticular respective outer side edges, therefore, during for the large-size sound source, the plane reticular structure of this acoustical power testing jig self has stronger bearing capacity, and adopt the mounting means of lifting, can avoid causing because of own wt and proving installation weight the situation of acoustical power testing jig distortion fully, guaranteed the Stability and veracity of test position fix, and the low reflection of the material of this acoustical power testing jig employing perforated plate, further reduced the impact on the acoustical power test.
Although the utility model discloses as above with preferred embodiment; so it is not in order to limit the utility model; have and usually know the knowledgeable in technical field under any; within not breaking away from spirit and scope of the present utility model; when being used for a variety of modifications and variations, therefore protection domain of the present utility model is as the criterion when looking claims person of defining.
Claims (3)
1. an acoustical power testing jig, is characterized in that, comprising: the plane reticular framework; The proving installation locating rack, be movably connected on described plane reticular framework, so that the fixing test device to be installed.
2. acoustical power testing jig according to claim 1, is characterized in that, described plane reticular framework is spliced by a plurality of perforated plate bending parts.
3. acoustical power testing jig according to claim 1, is characterized in that, described plane reticular framework is the netted structure of polygon or circular reticulate texture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320384868 CN203364958U (en) | 2013-06-28 | 2013-06-28 | Acoustical power testing support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320384868 CN203364958U (en) | 2013-06-28 | 2013-06-28 | Acoustical power testing support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203364958U true CN203364958U (en) | 2013-12-25 |
Family
ID=49812704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320384868 Expired - Lifetime CN203364958U (en) | 2013-06-28 | 2013-06-28 | Acoustical power testing support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203364958U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344326A (en) * | 2013-06-28 | 2013-10-09 | 上海声望声学工程有限公司 | Acoustical power testing frame |
-
2013
- 2013-06-28 CN CN 201320384868 patent/CN203364958U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344326A (en) * | 2013-06-28 | 2013-10-09 | 上海声望声学工程有限公司 | Acoustical power testing frame |
| CN103344326B (en) * | 2013-06-28 | 2017-08-01 | 上海声望声学科技股份有限公司 | Acoustical power testing jig |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203364958U (en) | Acoustical power testing support | |
| CN103465237A (en) | Adjustable fixture | |
| CN103344326A (en) | Acoustical power testing frame | |
| CN205483198U (en) | Ultra -thin force cell sensor that weighs | |
| CN203563004U (en) | Performance aging test device for photovoltaic assemblies | |
| CN205066979U (en) | Draw pressure sensor | |
| CN202092867U (en) | Stainless steel car body steel structure static strength test end part loading tool | |
| CN204330255U (en) | Battery stand test tool | |
| CN203024674U (en) | Automobile engine compartment longitudinal beam rear section assembly detection base | |
| CN202109973U (en) | Supporting structure of electronic scale | |
| CN103017707A (en) | Device and method for accurately measuring displacement | |
| CN203566671U (en) | Adjustable jig | |
| CN205785530U (en) | Solar simulator assembly backboard temperature testing device | |
| CN202770344U (en) | Special gauge for crankshaft outer edge | |
| CN208579703U (en) | A kind of phone housing detection components | |
| CN202710175U (en) | Calibration testing block of automobile rubber member inherent frequency testing device | |
| CN202710391U (en) | Support for testing keel bearing capacity | |
| CN203642956U (en) | Stirring arm inspection machine | |
| CN216115701U (en) | Cell-phone center hole site detection tool | |
| CN203657647U (en) | Detection device structure for front crossbeam reinforcing connecting rod | |
| CN202057560U (en) | Radial rigidity testing device of high-elasticity couplers | |
| CN209134597U (en) | A kind of portable microphone bracket | |
| CN203418966U (en) | Suspension support | |
| CN202895865U (en) | Foam sticking machine | |
| CN202452918U (en) | Shock absorber shell gauge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 200336, room 607-608, Tian Rui building, 31 Shuangliu Road, Shanghai, Changning District Patentee after: SHANGHAI SHENGWANG ACOUSTICS TECHNOLOGY Co.,Ltd. Address before: 200335, room 31, 608 Shuangliu Road, Shanghai, Changning District Patentee before: SHANGHAI SHENGWANG ACOUSTICS ENGINEERING Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131225 |