CN204422060U - A kind of Acoustic power measuring frame - Google Patents
A kind of Acoustic power measuring frame Download PDFInfo
- Publication number
- CN204422060U CN204422060U CN201520145782.8U CN201520145782U CN204422060U CN 204422060 U CN204422060 U CN 204422060U CN 201520145782 U CN201520145782 U CN 201520145782U CN 204422060 U CN204422060 U CN 204422060U
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- hole
- power measuring
- acoustic power
- mounting pipe
- measuring frame
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Abstract
A kind of Acoustic power measuring frame, comprise positioning disk and several arc-shaped guide rail, one end of arc-shaped guide rail and positioning disk is detachable is connected to form semisphere Acoustic power measuring frame, described Acoustic power measuring frame also comprises mounting pipe, microphone fixed bar and reinforcing base ring, in the dismountable any position being fixed on described arc-shaped guide rail of described mounting pipe, described microphone fixed bar and described mounting pipe removable fixedly make described microphone fixed bar along Acoustic power measuring frame radial direction arrange, described reinforcing base ring is connected with the other end of described arc-shaped guide rail is detachable.Acoustic power measuring frame of the present utility model is measured the adjustable and profile of radius and is firmly not easily deformed.
Description
Technical field
The utility model relates to sound power measurement technical field, particularly a kind of Acoustic power measuring frame.
Background technology
Sound power measurement be widely used in automobile, Aero-Space, household electrical appliance, computing machine and communicate, industrial products etc. are each
Individual field, to carry out noise measurement and acoustics feature measurement to product.The sound power measurement of sound source, normally sound source is placed in free found field such as anechoic room or the indoor that partly disappear, be that the centre of sphere is placed with sound source by the Acoustic power measuring frame of dome-type, microphone is fixed in some distributed points on measurement bay surface, measure the acoustic pressure of the some distributed points in measurement bay surface, and then try to achieve acoustical power, and distributed points is exactly the measurement radius of this Acoustic power measuring frame to the distance of the centre of sphere.Dome-type Acoustic power measuring frame is divided into integral structure and Demountable two kinds, and the measurement bay of integral structure exists inconvenience transport, deposits and drawback used in everyday.The Acoustic power measuring frame of Demountable, although overcome integral structure measurement bay in transport, deposit and the deficiency on routine use, but the measurement radius of the Acoustic power measuring frame of demountable structure and integral structure all cannot change, when the measurement radius of Acoustic power measuring frame is greater than the free field radius of free found field residing for it, measurement there will be very large deviation, the accuracy measured can not be guaranteed, in addition when measurement point on Acoustic power measuring frame increases, when microphone quantity increase fixing on measurement bay causes measurement bay heavy burden to increase, measurement bay profile not firmly easily deforms, the distributed points at microphone place is not in same hemisphere surface, cause the low shortcoming being also existing Acoustic power measuring frame and existing of measuring accuracy.
Utility model content
The utility model cannot change for the radius that detachable Acoustic power measuring frame of the prior art is estimated and cause measuring radius nonadjustable technical matters under different free found field, provides a kind of Acoustic power measuring frame measured the adjustable and profile of radius and firmly not easily deform.
The technical scheme provided for reaching above object the utility model is: a kind of Acoustic power measuring frame, comprise positioning disk and several arc-shaped guide rail, one end of arc-shaped guide rail and positioning disk is detachable is connected to form semisphere Acoustic power measuring frame, described Acoustic power measuring frame also comprises mounting pipe, microphone fixed bar and reinforcing base ring, in the dismountable any position being fixed on described arc-shaped guide rail of described mounting pipe, described microphone fixed bar and described mounting pipe removable fixedly make described microphone fixed bar along Acoustic power measuring frame radial direction arrange, described reinforcing base ring is connected with the other end of described arc-shaped guide rail is detachable.
Further, the dismountable any position being fixed on described arc-shaped guide rail of described mounting pipe refers to the through hole having in described mounting pipe and match with the shape of cross section size of described arc-shaped guide rail, described mounting pipe to be sleeved on described arc-shaped guide rail by described through hole and can to move along described arc-shaped guide rail, the tube wall of described mounting pipe has and the tapped through hole one that be connected vertical with described through hole, trip bolt one screws in described tapped through hole one and described mounting pipe is fixed on described arc-shaped guide rail.
Further, described microphone fixed bar and described mounting pipe is removable fixedly makes described microphone fixed bar arrange along Acoustic power measuring frame radial direction the wall thickness direction referred to along described mounting pipe to offer and the installation through hole at described tapped through hole one interval, the perforate direction of described installation through hole is consistent with the radial direction of Acoustic power measuring frame, removable fixing with described mounting pipe in the installation through hole described in described microphone fixed bar inserts.
Further, in installation through hole described in described microphone fixed bar inserts, fixedly refer to removable with described mounting pipe has the tapped through hole two parallel with described through hole on the tube wall of described mounting pipe, described tapped through hole two is connected with described installation through hole, and trip bolt two screws in described tapped through hole two and is fixed in described mounting pipe by described microphone fixed bar.
Further, described reinforcing base ring is made up of semi-ring one and semi-ring two, described semi-ring one is connected by joint sleeve with semi-ring two, half and the described semi-ring one of described joint sleeve are socketed, second half and described semi-ring two of described joint sleeve are socketed, the socket place of described joint sleeve and described semi-ring one and semi-ring two all has through hole, and described joint sleeve and semi-ring one and semi-ring two are fastenedly connected through by described through hole by bolt assembly.
Further, the quantity of described arc-shaped guide rail is six.
In the utility model, the two ends of arc-shaped guide rail are arranged on positioning disk respectively and reinforce on base ring, the two ends of arc-shaped guide rail are all fixed, strengthen the flexural strength of arc-shaped guide rail, the profile of the Acoustic power measuring frame be made up of positioning disk, several arc-shaped guide rail and reinforcing base ring is more firm, even if the profile increasing heavy burden Acoustic power measuring frame is also less likely to occur distortion, ensure that measuring accuracy does not reduce because Acoustic power measuring frame heavy burden increases.Mounting pipe in the utility model is dismountable to be arranged in any position of arc-shaped guide rail, according to the quantity of tested point on an arc-shaped guide rail, the mounting pipe of respective numbers is installed on this arc-shaped guide rail, when being convenient for measuring the sound source of different qualities, increases or reduce the quantity of measurement point.Microphone fixed bar and mounting pipe removable fixedly make described microphone fixed bar along Acoustic power measuring frame radial direction arrange, namely the position fixed by adjustment microphone fixed bar and mounting pipe regulates microphone fixed bar to regulate the measurement radius of Acoustic power measuring frame to the distance of the Acoustic power measuring frame centre of sphere near one end of the Acoustic power measuring frame centre of sphere, ensure that the measurement radius of Acoustic power measuring frame is all less than the free field radius of the free found field residing for it, different measurement radiuses can be obtained not changing the lower in advance of sound power measurement physical dimension, Acoustic power measuring frame is all applicable in the free found field of different free field radius, improve the applicability of sound power measurement examination.
Accompanying drawing explanation
Fig. 1 structural representation of the present utility model.
Fig. 2 is the mounting structure schematic diagram of arc-shaped guide rail in embodiment, mounting pipe and microphone fixed bar.
Fig. 3 is that in embodiment, mounting pipe is enclosed within the structural representation on arc-shaped guide rail by through hole.
Fig. 4 is the connection diagram of semi-ring one in embodiment, semi-ring two and joint sleeve.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.
As shown in Figures 1 to 4, a kind of Acoustic power measuring frame, comprise positioning disk 1 and six arc-shaped guide rails 2, one end of arc-shaped guide rail 2 and positioning disk 1 is detachable is connected to form semisphere Acoustic power measuring frame, described Acoustic power measuring frame also comprises mounting pipe 3, microphone fixed bar 4 and reinforcing base ring 5, described mounting pipe 3 has the through hole 31 matched with the shape of cross section size of described arc-shaped guide rail 2, described mounting pipe 3 to be sleeved on described arc-shaped guide rail 2 by described through hole 31 and can to move along described arc-shaped guide rail 2, the tube wall of described mounting pipe 3 has and the tapped through hole one 32 that be connected vertical with described through hole 31, in tapped through hole 1 described in trip bolt 1 screws in, described mounting pipe 3 is fixed on described arc-shaped guide rail 2.Wall thickness direction along described mounting pipe 3 is offered and the installation through hole 33 at described tapped through hole 1 interval, the perforate direction of described installation through hole 33 is consistent with the radial direction of Acoustic power measuring frame, described microphone fixed bar 4 inserts in described installation through hole 33, the tube wall of described mounting pipe 3 has the tapped through hole two 34 parallel with described through hole 31, described tapped through hole 2 34 is connected with described installation through hole 33, is fixed in described mounting pipe 3 by described microphone fixed bar 4 in the tapped through hole 2 34 described in trip bolt 27 screws in.Described reinforcing base ring 5 is connected with the other end of described arc-shaped guide rail 2 is detachable.Described reinforcing base ring 5 is made up of semi-ring 1 and semi-ring 2 51, described semi-ring 1 is connected by joint sleeve 53 with semi-ring 2 52, half and the described semi-ring 1 of described joint sleeve 53 are socketed, second half and described semi-ring 2 52 of described joint sleeve 53 are socketed, described joint sleeve 53 all has through hole with the socket place of described semi-ring 1 and semi-ring 2 52, and described joint sleeve 53 is fastenedly connected with semi-ring 1 and semi-ring 2 52 through by described through hole by bolt assembly.
In above-mentioned Acoustic power measuring frame, the two ends of arc-shaped guide rail 2 are arranged on positioning disk 1 respectively and reinforce on base ring 5, the two ends of arc-shaped guide rail 2 are all fixed, strengthen the flexural strength of arc-shaped guide rail 2, the profile of the Acoustic power measuring frame be made up of positioning disk 1, several arc-shaped guide rail 2 and reinforcing base ring 5 is more firm, even if the profile increasing heavy burden Acoustic power measuring frame is also less likely to occur distortion, ensure that measuring accuracy does not reduce because Acoustic power measuring frame heavy burden increases.Mounting pipe 3 can be arranged in any position of arc-shaped guide rail 2 by through hole 31 and trip bolt 1, as long as install the mounting pipe 3 of respective numbers according to the quantity of tested point on an arc-shaped guide rail 2 on this arc-shaped guide rail, when being convenient for measuring the sound source of different qualities, increase or reduce the quantity of measurement point.Microphone fixed bar 4 is fixed in mounting pipe 3 by installation through hole 33 and fastening screw 27, namely regulate microphone fixed bar 4 to regulate to the distance of the Acoustic power measuring frame centre of sphere near one end of the Acoustic power measuring frame centre of sphere by the position regulating microphone fixed bar 4 and mounting pipe 3 to fix to be fixed on the microphone of microphone fixed bar 4 near one end of the Acoustic power measuring frame centre of sphere and to obtain different measurement radiuses to the distance of the Acoustic power measuring frame centre of sphere, ensure that the measurement radius of Acoustic power measuring frame is all less than the free field radius of the free found field residing for it, different measurement radiuses can be obtained not changing the lower in advance of sound power measurement physical dimension, Acoustic power measuring frame is all applicable in the free found field of different free field radius, improve the applicability of sound power measurement examination.
Below by reference to the accompanying drawings complete description is carried out to the technical scheme of the utility model embodiment, it should be noted that described embodiment is only the utility model part embodiment.Based on the embodiment in the utility model, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belongs to the scope of the utility model protection.
Claims (6)
1. an Acoustic power measuring frame, comprise positioning disk (1) and several arc-shaped guide rail (2), one end of arc-shaped guide rail (2) and positioning disk (1) is detachable is connected to form semisphere Acoustic power measuring frame, it is characterized in that described Acoustic power measuring frame also comprises mounting pipe (3), microphone fixed bar (4) and reinforcing base ring (5), in the dismountable any position being fixed on described arc-shaped guide rail (2) of described mounting pipe (3), described microphone fixed bar (4) fixedly makes described microphone fixed bar (4) arrange along Acoustic power measuring frame radial direction with described mounting pipe (3) is removable, described reinforcing base ring (5) is connected with the other end of described arc-shaped guide rail (2) is detachable.
2. Acoustic power measuring frame according to claim 1, it is characterized in that the dismountable any position being fixed on described arc-shaped guide rail (2) of described mounting pipe (3) refers to the through hole (31) having in described mounting pipe (3) and match with the shape of cross section size of described arc-shaped guide rail (2), described mounting pipe (3) is sleeved on described arc-shaped guide rail (2) by described through hole (31) and goes up and can move along described arc-shaped guide rail (2), the tube wall of described mounting pipe (3) has and the tapped through hole one (32) that be connected vertical with described through hole (31), in tapped through hole one (32) described in trip bolt one (6) screws in, described mounting pipe (3) is fixed on described arc-shaped guide rail (2).
3. Acoustic power measuring frame according to claim 2, it is characterized in that described microphone fixed bar (4) and described mounting pipe (3) are removable fixedly makes described microphone fixed bar (4) offer and the installation through hole (33) at described tapped through hole one (32) interval along the radial wall thickness direction referred to along described mounting pipe (3) that arranges of Acoustic power measuring frame, the perforate direction of described installation through hole (33) is consistent with the radial direction of Acoustic power measuring frame, removable fixing with described mounting pipe (3) in installation through hole (33) described in described microphone fixed bar (4) inserts.
4. Acoustic power measuring frame according to claim 3, it is characterized in that described microphone fixed bar (4) insert described in installation through hole (33) on the tube wall of described mounting pipe (3), have the tapped through hole two (34) parallel with described through hole (31) with removable fixedly the referring to of described mounting pipe (3), described tapped through hole two (34) is connected with described installation through hole (33), is fixed in described mounting pipe (3) by described microphone fixed bar (4) in the tapped through hole two (34) described in trip bolt two (7) screws in.
5. the Acoustic power measuring frame according to claim 1 to any one of claim 4, it is characterized in that described reinforcing base ring (5) is made up of semi-ring one (51) and semi-ring two (51), described semi-ring one (51) is connected by joint sleeve (53) with semi-ring two (52), half and the described semi-ring one (51) of described joint sleeve (53) are socketed, second half and described semi-ring two (52) of described joint sleeve (53) are socketed, described joint sleeve (53) all has through hole with the socket place of described semi-ring one (51) and semi-ring two (52), described joint sleeve (53) and semi-ring one (51) and semi-ring two (52) are fastenedly connected through by described through hole by bolt assembly.
6. Acoustic power measuring frame according to claim 5, is characterized in that the quantity of described arc-shaped guide rail (2) is six.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520145782.8U CN204422060U (en) | 2015-03-16 | 2015-03-16 | A kind of Acoustic power measuring frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520145782.8U CN204422060U (en) | 2015-03-16 | 2015-03-16 | A kind of Acoustic power measuring frame |
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| Publication Number | Publication Date |
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| CN204422060U true CN204422060U (en) | 2015-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520145782.8U Expired - Fee Related CN204422060U (en) | 2015-03-16 | 2015-03-16 | A kind of Acoustic power measuring frame |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106872018A (en) * | 2017-01-10 | 2017-06-20 | 吉利汽车研究院（宁波）有限公司 | For the acoustic matrix array apparatus of vehicle testing tire noise power level |
| CN109883538A (en) * | 2019-03-25 | 2019-06-14 | 中国船舶重工集团公司第七一九研究所 | A kind of microphone mounting bracket and mounting device |
| CN110542477A (en) * | 2019-09-29 | 2019-12-06 | 华南理工大学 | Electronic device noise measurement system based on hemispherical tool |
| CN112284519A (en) * | 2020-10-12 | 2021-01-29 | 中汽研汽车检验中心（天津）有限公司 | But quick assembly disassembly formula acoustic power sensor installation device |
-
2015
- 2015-03-16 CN CN201520145782.8U patent/CN204422060U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106872018A (en) * | 2017-01-10 | 2017-06-20 | 吉利汽车研究院（宁波）有限公司 | For the acoustic matrix array apparatus of vehicle testing tire noise power level |
| CN106872018B (en) * | 2017-01-10 | 2019-08-30 | 吉利汽车研究院（宁波）有限公司 | Acoustic matrix array apparatus for vehicle testing tire noise power grade |
| CN109883538A (en) * | 2019-03-25 | 2019-06-14 | 中国船舶重工集团公司第七一九研究所 | A kind of microphone mounting bracket and mounting device |
| CN110542477A (en) * | 2019-09-29 | 2019-12-06 | 华南理工大学 | Electronic device noise measurement system based on hemispherical tool |
| CN112284519A (en) * | 2020-10-12 | 2021-01-29 | 中汽研汽车检验中心（天津）有限公司 | But quick assembly disassembly formula acoustic power sensor installation device |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150624 Termination date: 20200316 |