CN206593873U - Acoustic experiment rotary drum and acoustic experiment device - Google Patents
Acoustic experiment rotary drum and acoustic experiment device Download PDFInfo
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- CN206593873U CN206593873U CN201720327705.3U CN201720327705U CN206593873U CN 206593873 U CN206593873 U CN 206593873U CN 201720327705 U CN201720327705 U CN 201720327705U CN 206593873 U CN206593873 U CN 206593873U
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Abstract
The utility model discloses a kind of acoustic experiment rotary drum, and the drum surface of rotary drum is divided into two regions vertically：Different drum surface modules are arranged on first area and second area, first area and second area.The utility model further discloses a kind of acoustic experiment device, including：The rotary drum of workbench and mounted in pairs, two rotary drums are separately mounted to the both sides of workbench, and the drum surface of each rotary drum is divided into two regions vertically：Different drum surface modules are arranged on first area and second area, first area and second area.Same drum surface module is disposed with the first area of the second area of first rotary drum and the second rotary drum, the first test section is formed.Same drum surface module is disposed with the second area of the first area of first rotary drum and the second rotary drum, the second test section is formed, the second test section is different with the drum surface module of the first test section.The utility model arranges two kinds of drum surface modules in drum surface, two kinds of pavement behaviors can be tested simultaneously in a process of the test.
Description
Technical field
The utility model is related to Automobile Measuring Techniques field, more specifically to the acoustic experiment equipment of automobile.
Background technology
Noise during automobile use is to influence one of important indicator of car mass and use feeling.In order to automobile
Noise during use is measured, it is necessary to carry out acoustic experiment to automobile.The purpose of acoustic experiment, which is that measurement is main, makes an uproar
Sound source：Internal car noise level caused by road noise and engine noise.
It is that caused noise is different, it is necessary to which various road surfaces are carried out with test ability comprehensively that automobile is travelled on different road surfaces
Understand the noise situations of automobile.But for various reasons, for example speed caused by weather, condition of road surface is uncontrollable, Model choices
It is limited etc. so that research and development and test phase in automobile, it is impossible to realize the actual road test on various road surfaces.Then, for vapour
Car acoustics (NVH) develops special testing equipment：Drum dynamometer.Drum dynamometer is disposed in the interior, and automobile is set up
On drum dynamometer, wheel is contacted with the drum surface of rotary drum.Different condition of road surface are simulated by different drum surfaces, acoustics examination is carried out
Test.The acoustic experiment that the drum dynamometer being disposed in the interior is carried out has weatherproof, load (speed) controllable and measured
The advantages such as point arrangement facility, are widely used in each stage of car acpistocs (NVH) exploitation, the drum test of car acpistocs experiment
Platform is known as the basic research and development facility of acoustics (NVH) by industry.
At present, the drum surface for the rotary drum that the drum dynamometer of acoustics (NVH) experiment of domestic whole-car firm is used is single
Drum surface module, i.e., when being tested each time, a kind of drum surface module (i.e. pavement behavior) can only be tested.Complete one
After secondary experiment, to change the drum surface module of rotary drum could be carried out next time, i.e., the experiment of another pavement behavior.Therefore, it is existing
Drum dynamometer exist rotary drum function it is single, it is necessary to it is ordinary change drum surface module defect, cause test efficiency relatively low.
Utility model content
The utility model be directed to a kind of acoustic experiment rotary drum that disposably two kinds of pavement behaviors can be tested with
And acoustic experiment device.
According to an embodiment of the present utility model, a kind of acoustic experiment rotary drum is proposed, the drum surface of rotary drum is divided into two vertically
Individual region：Different drum surface modules are arranged on first area and second area, first area and second area.
In one embodiment, the area of first area is less than the area of second area.
In one embodiment, drum surface module is to be selected from：Rough road module, small square brick road surface module, crosspiece road surface mould
Block.
According to an embodiment of the present utility model, a kind of acoustic experiment device is proposed, including：Workbench and mounted in pairs
Rotary drum, two rotary drums are separately mounted to the both sides of workbench, and the drum surface of each rotary drum is divided into two regions vertically：Firstth area
Different drum surface modules are arranged on domain and second area, first area and second area.Wherein, the second area of the first rotary drum and
Same drum surface module is disposed with the first area of second rotary drum, the first test section is formed.The first area of first rotary drum and
Same drum surface module is disposed with the second area of second rotary drum, the second test section, the second test section and the first test is formed
The drum surface module in area is different.
In one embodiment, the minimum wheelspan of span covering and maximum wheelspan of the first test section.Second test section across
The minimum wheelspan of degree covering and maximum wheelspan.
In one embodiment, the area of first area is less than the area of second area.
In one embodiment, drum surface module is to be selected from：Rough road module, small square brick road surface module, crosspiece road surface mould
Block.
In one embodiment, two pairs of rotary drums are installed on workbench, the position of front wheels and rear wheels is corresponded to respectively.
Acoustic experiment rotary drum and acoustics experimental rig of the present utility model arrange two kinds of drum surface moulds in the drum surface of rotary drum
Two kinds of pavement behaviors can be tested, to improve the efficiency of experiment by block simultaneously in a process of the test.
Brief description of the drawings
The above and other feature of the utility model, property and advantage are by by with reference to the accompanying drawings and examples
Describe and become apparent, identical reference represents identical feature all the time in the accompanying drawings, wherein：
Fig. 1 discloses the structural representation of the acoustic experiment rotary drum according to an embodiment of the present utility model.
Fig. 2 discloses the structural representation of the acoustic experiment device according to an embodiment of the present utility model.
Embodiment
With reference to shown in Fig. 1, Fig. 1 discloses the structural representation of the acoustic experiment rotary drum according to an embodiment of the present utility model
Figure.As illustrated, the drum surface of the rotary drum is divided into two regions vertically：First area A and second area B, first area A and
Different drum surface modules are arranged on two region B.In the illustrated embodiment, first area A area is less than second area B face
Product.In one embodiment, the 1/3~1/2 of first area A area substantially second area B area.Drum surface module is choosing
From：Rough road module, small square brick road surface module, crosspiece road surface module.First area A and second area B select difference respectively
Drum surface module, that is to say, that from rough road module, small square brick road surface module, crosspiece road surface module select two kinds of drum surfaces
Module, is arranged on first area A and second area B.
With reference to shown in Fig. 2, Fig. 2 discloses the structural representation of the acoustic experiment device according to an embodiment of the present utility model
Figure.As illustrated, the acoustic experiment device includes：The rotary drum of workbench 102 and mounted in pairs.In the illustrated embodiment, exist
Two pairs of rotary drums are installed on workbench 102, the position of front wheels and rear wheels is corresponded to respectively.A pair of rotary drums of correspondence front wheel positions are the
One rotary drum 104 and the second rotary drum 106, a pair of rotary drums of correspondence rear wheel position are the first rotary drum 108 and the second rotary drum 110.For
For any pair of rotary drum, two rotary drums are separately mounted to the both sides of workbench, and the drum surface of each rotary drum is divided into two vertically
Individual region：Different drum surface modules are arranged on first area and second area, first area and second area.The of first rotary drum
Same drum surface module is disposed with two regions and the first area of the second rotary drum, the first test section is formed.The of first rotary drum
Be disposed with same drum surface module on the second area of one region and the second rotary drum, form the second test section, the second test section and
The drum surface module of first test section is different.
In the illustrated embodiment, the first rotary drum 104 of correspondence front wheel positions is arranged in the first side of workbench 102, the
Two rotary drums 106 are arranged in the second side of workbench 102.The first area 104A of first rotary drum 104 is close to workbench 102, first
The second area 104B of rotary drum 104 is away from workbench 102.Likewise, the first area 106A of the second rotary drum 106 is close to workbench
102, the second area 106B of the second rotary drum 106 is away from workbench 102.The second area 104B of first rotary drum and the second rotary drum
Same drum surface module is disposed with the 106A of first area, the first test section is formed.The first area 104A of first rotary drum and
Same drum surface module is disposed with the second area 106B of two rotary drums, the second test section is formed.Second test section and first is surveyed
The drum surface module for trying area is different.Likewise, the first rotary drum 108 of correspondence rear wheel position is arranged in the first side of workbench 102, the
Two rotary drums 110 are arranged in the second side of workbench 102.The first area 108A of first rotary drum 108 is close to workbench 102, first
The second area 108B of rotary drum 108 is away from workbench 102.The first area 110A of second rotary drum 110 is close to workbench 102,
The second area 110B of two rotary drums 110 is away from workbench 102.The second area 108B of first rotary drum and the firstth area of the second rotary drum
Same drum surface module is disposed with the 110A of domain, the first test section is formed.The first area 108A and the second rotary drum of first rotary drum
Second area 110B on be disposed with same drum surface module, form the second test section.Second test section and the first test section
Drum surface module is different.
Arranged in the first test section on a pair of rotary drums of correspondence front wheel positions and a pair of rotary drums of correspondence rear wheel position
Drum surface module is identical, equally, second on a pair of rotary drums of correspondence front wheel positions and a pair of rotary drums of correspondence rear wheel position
The drum surface module arranged in test section is also identical.The minimum wheelspan of span covering of first test section and maximum wheelspan, so
May insure the various vehicles with different wheelspans can in test so that four wheels are in same drum surface module,
Carry out same condition of road surface experiment.Likewise, the minimum wheelspan of span covering of the second test section and maximum wheelspan.
In the illustrated embodiment, first area A area is less than second area B area.In one embodiment,
The 1/3~1/2 of one region A area substantially second area B area.Drum surface module is to be selected from：Rough road module, small side
Brick paving module, crosspiece road surface module.That is, from rough road module, small square brick road surface module, crosspiece road surface module
Two kinds of drum surface modules are selected, are arranged on the first test section and the second test section.
When carrying out acoustic experiment, first four wheels of automobile are all rested in the first test section.In diagram
In embodiment, because the region of the first test section of correspondence on the second rotary drum is less first area, therefore cause this first
The wheel of side ensures to stop in the first region.And the first test section of correspondence is larger second area on the first rotary drum,
Therefore the vehicle of this side has larger regulation space.As elucidated before, the minimum wheelspan of span covering of the first test section
With maximum wheelspan, therefore, it is possible to cause four wheels of various vehicles all to rest in the first test section.First to the first test section
Tested.After the completion of being tested in the first test section, it is not necessary to which the drum surface to rotary drum is changed, automobile is horizontal directly on rotary drum
To movement so that four wheel integral translations are into the second test section.As elucidated before, the span of the second test section is covered most
Small wheelspan and maximum wheelspan, therefore, it is possible to cause four wheels of various vehicles all to rest in the second test section.Afterwards to
Tested two test sections.In this way, it is possible in the case where being changed without the drum surface and automobile of rotary drum without departing from rotary drum, once
The property drum surface module different to two kinds, i.e. condition of road surface is tested.
A specific implementation according to acoustic experiment device of the present utility model is described below.In the side of implementing
In formula, disclose the size of rotary drum, motor parameter, rotary drum annex, output signal, vibration and noise reducing processing, vent gas treatment and
The relevant parameter of acoustic enviroment.It for details, reference can be made to following table 1.
Table 1
Acoustic experiment device of the present utility model can meet the car of various working by different drum road surface block combiners
Interior noise testing, it may also be used for the measurement of inlet and exhaust system and tire near field noise.In the drum surface block combiner of specific (conventional)
In the case of, dynamic and positioning need to be only translated to lateral direction of car and is fixed, you can the measurement of comparison of different road surface internal car noises is realized, can be big
Width saves the experiment time changed needed for rotary drum drum surface.In actual applications, it can be changed according to test vehicle actual conditions
Become rotary drum width, bed dimension, wheelbase adjustable range, road surface module combination and order of placement etc..Following tables 2 are disclosed
The combination of conventional road surface module and special-purpose road surface module and corresponding experiment species and pilot project.
Table 2
Acoustic experiment rotary drum and acoustics experimental rig of the present utility model arrange two kinds of drum surface moulds in the drum surface of rotary drum
Two kinds of pavement behaviors can be tested, to improve the efficiency of experiment by block simultaneously in a process of the test.
Above-described embodiment, which is available to, to be familiar with person in the art to realize or using of the present utility model, be familiar with ability
The personnel in domain can in the case where not departing from utility model thought of the present utility model, above-described embodiment is made various modifications or
Change, thus protection domain of the present utility model do not limit by above-described embodiment, and should meet claims to mention
Inventive features maximum magnitude.
Claims (8)
1. a kind of acoustic experiment rotary drum, it is characterised in that the drum surface of rotary drum is divided into two regions vertically：First area and second
Different drum surface modules are arranged on region, first area and second area.
2. acoustic experiment rotary drum as claimed in claim 1, it is characterised in that the area of first area is less than the face of second area
Product.
3. acoustic experiment rotary drum as claimed in claim 2, it is characterised in that the drum surface module is to be selected from：Rough road mould
Block, small square brick road surface module, crosspiece road surface module.
4. a kind of acoustic experiment device, it is characterised in that including：
Workbench；
The rotary drum of mounted in pairs, two rotary drums are separately mounted to the both sides of workbench, and the drum surface of each rotary drum is divided into vertically
Two regions：Different drum surface modules are arranged on first area and second area, first area and second area；
Wherein, it is disposed with same drum surface module on the first area of the second area of the first rotary drum and the second rotary drum, forms the
One test section；
Same drum surface module is disposed with the second area of the first area of first rotary drum and the second rotary drum, second is formed and tests
The drum surface module of area, the second test section and the first test section is different.
5. acoustic experiment device as claimed in claim 4, it is characterised in that
The minimum wheelspan of span covering of first test section and maximum wheelspan；
The minimum wheelspan of span covering of second test section and maximum wheelspan.
6. acoustic experiment device as claimed in claim 4, it is characterised in that the area of first area is less than the face of second area
Product.
7. acoustic experiment device as claimed in claim 4, it is characterised in that the drum surface module is to be selected from：Rough road mould
Block, small square brick road surface module, crosspiece road surface module.
8. acoustic experiment device as claimed in claim 4, it is characterised in that two pairs of rotary drums are provided with the workbench, point
Not Dui Ying front wheels and rear wheels position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720327705.3U CN206593873U (en) | 2017-03-30 | 2017-03-30 | Acoustic experiment rotary drum and acoustic experiment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720327705.3U CN206593873U (en) | 2017-03-30 | 2017-03-30 | Acoustic experiment rotary drum and acoustic experiment device |
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| Publication Number | Publication Date |
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| CN206593873U true CN206593873U (en) | 2017-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720327705.3U Active CN206593873U (en) | 2017-03-30 | 2017-03-30 | Acoustic experiment rotary drum and acoustic experiment device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109855722A (en) * | 2018-12-27 | 2019-06-07 | 四川轮胎橡胶（集团）股份有限公司 | Pass through the test method of noise outside a kind of tire room |
-
2017
- 2017-03-30 CN CN201720327705.3U patent/CN206593873U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109855722A (en) * | 2018-12-27 | 2019-06-07 | 四川轮胎橡胶（集团）股份有限公司 | Pass through the test method of noise outside a kind of tire room |
| CN109855722B (en) * | 2018-12-27 | 2021-03-16 | 四川轮胎橡胶（集团）股份有限公司 | Method for testing outdoor passing noise of tire |
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