CN207662511U - A kind of wheel tire radiated noise test device - Google Patents
A kind of wheel tire radiated noise test device Download PDFInfo
- Publication number
- CN207662511U CN207662511U CN201721755010.1U CN201721755010U CN207662511U CN 207662511 U CN207662511 U CN 207662511U CN 201721755010 U CN201721755010 U CN 201721755010U CN 207662511 U CN207662511 U CN 207662511U
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- China
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- main frame
- test device
- radiated noise
- bar
- wheel tire
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Abstract
A kind of wheel tire radiated noise test device, is related to a kind of tyre noise test device, including main frame, the multiple stabilizer blades being located by connecting positioned at the lower section of main frame and with main frame, and on main frame and three microphones of distribution triangular in shape.The utility model provides a kind of wheel tire radiated noise test device of integrated form, the radiated noise that length by adjusting cross bar and montant can be suitably used for different sized tyres measures, and dedicated mounting bracket fixes multiple microphones, realize the Quick universal of microphone and be accurately positioned have the advantages that simple operation, save the time, reduce test error, raising efficiency.
Description
Technical field
The utility model is related to a kind of tyre noise test devices, and in particular to a kind of wheel tire radiated noise test dress
It sets.
Background technology
With automobile industry industrial expansion, the noise of automobile is increasingly becoming an important factor for influencing people's life, is become
The problem of NVH researcher.Tyre noise is as the source for influencing one of several big noises of car inside, research and reduction tyre noise
It is a urgent task.But existing rotating drum experiments needs carry out in anechoic room, and the technology of acoustical chamber is required to compare
It is high.The test of tire radiated noise is mainly tested in rotating hub at present, according to tire radiated noise test specification, tire
Surrounding installs microphone, then tests the radiated noise of tire each position under friction speed.This method is to microphone installation site
More demanding, because closer apart from tyre surface, the tyre noise error caused by the error of distance can be larger, can be because when measuring every time
Cause the deviation of test result for the site error of microphone.When measuring the radiated noise of tire using this method, to ensure
The positional precision of microphone needs to carry out location position to the microphone of each position, spends the time longer, without fixed transaudient
Device holder, and consistency is poor, limits the accuracy and efficiency of experiment.
Invention content
The purpose of this utility model is to provide for a kind of wheel tire radiated noise test device of integrated form, can simultaneously from
The front of tire, side, three directions are monitored tire radiated noise below, experimental condition favorable repeatability.
A kind of wheel tire radiated noise test device, including main frame are located at the lower section of main frame and are positioned with main frame
Multiple stabilizer blades of connection, and on main frame and three microphones of distribution triangular in shape.
Further, main frame is in U-typed comprising two first level bars arranged in parallel and both ends difference
With one end the second horizon bar connected vertically of two first level bars.Three microphones are respectively positioned on the inside of main frame, and its
In two microphones be separately mounted to by microphone mounting bracket on the free end of two first level bars, another microphone
The middle part of the second horizon bar is mounted on by microphone mounting bracket, and three microphones are located in same level.
Further, first level bar, the second horizon bar and the hand-held bar are all made of the telescopic rod that length can be adjusted.
Further, three microphones are detachably connected to the main frame by three microphone mounting brackets
On.
Further, three mounting brackets are in main frame in same level.
Further, the hand-held bar being also fixedly connected on the second horizon bar of the main frame.
Further, the second horizontal pole length constant interval is 0.8m to 1.2m；The first level pole length constant interval
For 0.3m to 0.45m；The length constant interval of the hand-held bar is 0.2m to 0.4m.
Further, the hand-held bar is located at the outside of main frame, and the hand-held bar is horizontally disposed, and one end is vertical
It is fixedly connected on the middle part of the second horizon bar.
The utility model is capable of providing a kind of wheel tire radiated noise test device of integrated form, can simultaneously from tire just
Face, side, three directions are monitored tire radiated noise below, experimental condition favorable repeatability.Environment temperature, wind speed,
Weather, ambient noise can be controlled effectively, and relatively have important value for the radiated noise of different sized tyres.
In addition：The radiated noise that length by adjusting cross bar and montant can be suitably used for different sized tyres measures, and dedicated peace
Holder is filled to fix microphone, realize the Quick universal of microphone and is accurately positioned, there is simple operation, save the time, subtract
The advantages of small test error, raising efficiency.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the mounting structure schematic diagram of the utility model；
Fig. 3 is tire radiated noise test front view；
Fig. 4 is that tire radiated noise tests main vertical view.
Specific implementation mode
The utility model is further illustrated in conjunction with attached drawing.
As shown in Figure 1, a kind of wheel tire radiated noise test device, including：The main frame of test device, several height are
0.1m support the stabilizer blade 4 of main frame, the hand-held bar 3 being fixedly connected with main frame, microphone mounting bracket 5 and removably
Three microphones 6.The main frame of test device is in U-typed comprising two first level bars 2 arranged in parallel, and
Both ends respectively with one end of two first level bars 2 second horizon bar 1 connected vertically.Wherein, first level bar 2, the second water
3 adjustable length of flat bar 1 and hand-held bar.Second horizon bar, 1 length constant interval is 0.8m to 1.2m, first level bar 2
Length constant interval is 0.3m to 0.45m, and the length constant interval of hand-held bar is 0.2m to 0.4m.
Three microphones 6 are respectively positioned on the inside of main frame 9, and two of which microphone 6 is divided by microphone mounting bracket 5
An Zhuan not be on the free end of two first level bars 2, another microphone 6 is mounted on second by microphone mounting bracket 5
The middle part of horizon bar 1, and three microphones 6 are located in same level.
One end of hand-held bar is fixedly connected on the middle part of cross bar, is in same plane with main frame and perpendicular to cross
Bar.
Shown in Fig. 2, vehicle is placed in the rotating hub 8 of anechoic room, the center of tire 7 is aligned with 8 center of rotating hub.Such as Fig. 3 and
Shown in Fig. 4, the utility model is installed to around tire 7, by infrared ray by the installation site and tire centerline of microphone
Alignment, and ensure microphone apart from tyre surface 0.15m.By adjusting the length of first level bar 2 and the second horizon bar 1, reach
The requirement of passenger car different model, sized tyre is tested, microphone 6 is connect with data acquisition front.Further fallen using rotating hub 8
Trailer carries out at the uniform velocity tire radiated noise and tests, and obtains the noise figure of lower three microphones 6 of each speed.
Finally the noise figure of lower three microphones 6 of each speed is averaged, obtains the spoke of the tire under each speed
Noise figure is penetrated, the radiated noise that the tire is carried out by the tire radiated noise value of test is assessed.
Claims (8)
1. a kind of wheel tire radiated noise test device, which is characterized in that including main frame（9）, it is located at main frame（9）Lower section
And and main frame（9）The multiple stabilizer blades being located by connecting（4）, and it is mounted on main frame（9）Three of distribution upper and triangular in shape
Microphone（6）.
2. wheel tire radiated noise test device according to claim 1, it is characterised in that：It is characterized in that：The master
Frame（9）In U-typed comprising two first level bars arranged in parallel（2）And both ends respectively with two the first water
Flat bar（2）One end the second horizon bar connected vertically（1）；
Three microphones（6）It is respectively positioned on main frame（9）Inside, and two of which microphone（6）Pass through microphone mounting bracket
（5）It is separately mounted to two first level bars（2）Free end on, another microphone（6）Pass through microphone mounting bracket（5）
Mounted on the second horizon bar（1）Middle part, and three microphones（6）In same level.
3. wheel tire radiated noise test device according to claim 2, it is characterised in that：The first level bar（2）
With the second horizon bar（1）It is all made of the telescopic rod that length can be adjusted.
4. wheel tire radiated noise test device according to claim 3, it is characterised in that：Three microphones（6）
Pass through three microphone mounting brackets（5）It is detachably connected to the main frame（9）On.
5. wheel tire radiated noise test device according to claim 4, it is characterised in that：Three mounting brackets
（5）With main frame（7）In same level.
6. the wheel tire radiated noise test device according to claim 2 or 4 or 5, it is characterised in that：The main frame
（9）The second horizon bar（1）On the hand-held bar that is also fixedly connected（3）, the hand-held bar（3）It can be adjusted using length
Telescopic rod.
7. wheel tire radiated noise test device according to claim 6, it is characterised in that：Second horizon bar（1）
Length constant interval is 0.8m to 1.2m；The first level bar（2）Length constant interval is 0.3m to 0.45m；It is described hand-held
Operating lever（3）Length constant interval be 0.2m to 0.4m.
8. wheel tire radiated noise test device according to claim 7, which is characterized in that the hand-held bar（3）
Positioned at main frame（9）Outside, the hand-held bar（3）It is horizontally disposed, and one end is vertically fixedly connected on the second horizon bar（1）
Middle part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721755010.1U CN207662511U (en) | 2017-12-15 | 2017-12-15 | A kind of wheel tire radiated noise test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721755010.1U CN207662511U (en) | 2017-12-15 | 2017-12-15 | A kind of wheel tire radiated noise test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207662511U true CN207662511U (en) | 2018-07-27 |
Family
ID=62941540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721755010.1U Active CN207662511U (en) | 2017-12-15 | 2017-12-15 | A kind of wheel tire radiated noise test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207662511U (en) |
-
2017
- 2017-12-15 CN CN201721755010.1U patent/CN207662511U/en active Active
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