CN201600185U - Noise reduction chamber - Google Patents
Noise reduction chamber Download PDFInfo
- Publication number
- CN201600185U CN201600185U CN2009202777033U CN200920277703U CN201600185U CN 201600185 U CN201600185 U CN 201600185U CN 2009202777033 U CN2009202777033 U CN 2009202777033U CN 200920277703 U CN200920277703 U CN 200920277703U CN 201600185 U CN201600185 U CN 201600185U
- Authority
- CN
- China
- Prior art keywords
- dynamometer
- coupling shaft
- basis
- anechoic chamber
- testing table
- 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
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The utility model provides a noise reduction chamber, which comprises a first base, a wall, a testing stand, dynamometers and connecting shafts; the wall is built on the first base for forming a test space; the testing stand is locate in the test space; the dynamometer is locate out of the test space. wherein the dynamometers include a first, second and third dynamometer; the connecting shafts include a first, second and third connecting shaft; the first, second and third dynamometer are arranged by T-shaped respectively distributed on the first, second and third side of the testing stand; the first end of the first, second and third connecting shaft are respectively connected with the first, second and third dynamometer; the second end of he first, second and third connecting shaft are respectively passed through the wall and extended towards the testing stand. Besides the noise test to the component having one or two input/output ends, the noise reduction chamber of the utility model also can be used for the noise test to the components having three input/output ends.
Description
Technical field
The utility model relates to a kind of anechoic chamber, more specifically, relates to and a kind ofly can carry out the anechoic chamber that noise testing provides experimental enviroment for motor car engine, power assembly or annex etc.
Background technology
The anechoic chamber is important experiment place in acoustics experiment and the noise testing, and its effect provides the noise testing environment in a free field or semi-free space.Existing anechoic chamber generally includes first basis, body of wall, testing table, dynamometer and coupling shaft, described wall construction is on described first basis and constitute test space, described testing table and dynamometer are arranged on described first basis, and described testing table is positioned at the described test space, described dynamometer is positioned at outside the described test space, first end of described coupling shaft is connected with described dynamometer, and second end of described coupling shaft passes described body of wall and extends towards described testing table.Wherein said dynamometer is generally one or two, power input component or power-output device during as test.For example, when engine is carried out noise testing, only need a dynamometer, engine is arranged on the testing table, and the output shaft of engine is connected with this dynamometer by coupling shaft, thereby carry out noise testing as power-output device.When wheel box is carried out noise testing, then need respectively two dynamometers as power input component and power-output device, wheel box is arranged on the testing table, and the input end of wheel box is connected with a dynamometer as the power input component by coupling shaft, the output terminal of wheel box is connected with another dynamometer as power-output device by another coupling shaft, thereby carries out noise testing.
As can be seen, existing anechoic chamber only can be used in only has the parts of one or two I/O end to carry out noise testing to engine, wheel box etc., and the parts that can't be used for vehicle bridge etc. is had three I/O ends (for example vehicle bridge has an input end and two output terminals) carry out noise testing, thereby make the application of anechoic chamber be restricted.
The utility model content
Thereby the purpose of this utility model is can't to be used for vehicle bridge etc. is had at existing anechoic chamber the parts of three I/O ends carries out the problem that noise testing makes that the application of anechoic chamber is restricted, a kind of anechoic chamber is provided, the parts that this anechoic chamber not only can be used for engine, wheel box etc. is had one or two I/O end carry out noise testing, the parts that can also be used for vehicle bridge etc. is had three I/O ends carry out noise testing, thereby have enlarged the range of application of anechoic chamber at least.
The anechoic chamber that provides according to a kind of embodiment of the present utility model comprises first basis, body of wall, testing table, dynamometer and coupling shaft, described wall construction is on described first basis and constitute test space, described testing table is positioned at the described test space, described dynamometer is positioned at outside the described test space, first end of described coupling shaft is connected with described dynamometer, second end of described coupling shaft passes described body of wall and extends towards described testing table, wherein, described dynamometer comprises first dynamometer, second dynamometer and the 3rd dynamometer, described coupling shaft comprises first coupling shaft, second coupling shaft and the 3rd coupling shaft, described first dynamometer, second dynamometer and the 3rd dynamometer are distributed in first side of described testing table respectively, the 3rd side on the perpendicular line of second side relative and the line that is positioned at this first side and second side with this first side, described first coupling shaft, first end of second coupling shaft and the 3rd coupling shaft respectively with described first dynamometer, second dynamometer is connected with the 3rd dynamometer, described first coupling shaft, second end of second coupling shaft and the 3rd coupling shaft passes described body of wall respectively and extends towards described testing table, for use in being connected with UUT.
The anechoic chamber that provides according to this embodiment of the present utility model, owing to have first dynamometer, second dynamometer and the 3rd dynamometer, and these three dynamometers are distributed in first side of described testing table respectively, the 3rd side on the perpendicular line of second side relative and the line that is positioned at this first side and second side with this first side, promptly the whole T of one-tenth of these three dynamometers font distributes, therefore except can be used in to engine, the parts that wheel box etc. have one or two I/O end carry out outside the noise testing, can also carry out noise testing to the parts with three I/O ends to being used for.For example when vehicle bridge is carried out noise testing, vehicle bridge is arranged on the testing table, and the input end of vehicle bridge is connected with the 3rd dynamometer by the 3rd coupling shaft, two output terminals of vehicle bridge are connected with second dynamometer with first dynamometer respectively with second coupling shaft by first coupling shaft respectively, thereby can carry out noise testing vehicle bridge.
Description of drawings
Fig. 1 is the floor map according to the anechoic chamber of a kind of embodiment of the present utility model;
Fig. 2 is the partial schematic sectional view of A-A direction among Fig. 1; And
Fig. 3 is that the B-B direction is revolved the partial schematic sectional view that turn 90 degrees among Fig. 1.
Embodiment
Describe embodiment of the present utility model below with reference to the accompanying drawings in detail.
As shown in Figure 1 to Figure 3, the anechoic chamber that provides according to a kind of embodiment of the present utility model comprises first basis 1, body of wall 2, testing table 3, dynamometer and coupling shaft, described body of wall 2 is built in described first basis last 1 and constitutes test space 4, described testing table 3 is positioned at the described test space 4, described dynamometer is positioned at outside the described test space 4, first end of described coupling shaft is connected with described dynamometer, second end of described coupling shaft passes described body of wall 2 and extends towards described testing table 3, wherein, described dynamometer comprises first dynamometer 51, second dynamometer 52 and the 3rd dynamometer 53, described coupling shaft comprises first coupling shaft 61, second coupling shaft 62 and the 3rd coupling shaft 63, described first dynamometer 51, second dynamometer 52 and the 3rd dynamometer 53 are distributed in first side of described testing table 3 respectively, the 3rd side on the perpendicular line of second side relative and the line that is positioned at this first side and second side with this first side, described first coupling shaft 61, first end 611 of second coupling shaft 62 and the 3rd coupling shaft 63,621 and 631 respectively with described first dynamometer 51, second dynamometer 52 is connected with the 3rd dynamometer 53, described first coupling shaft 61, second end 612 of second coupling shaft 62 and the 3rd coupling shaft 63,622 and 632 pass described body of wall 2 respectively and extend towards described testing table 3, for use in being connected with UUT.
The anechoic chamber that provides according to this embodiment of the present utility model, owing to have first dynamometer 51, second dynamometer 52 and the 3rd dynamometer 53, and these three dynamometers are distributed in first side of described testing table 3 respectively, the 3rd side on the perpendicular line of second side relative and the line that is positioned at this first side and second side with this first side, promptly the whole T of one-tenth of these three dynamometers font distributes, therefore except can be used in to engine, the parts that wheel box etc. have one or two I/O end carry out outside the noise testing, can also carry out noise testing to the parts with three I/O ends to being used for.For example when vehicle bridge 7 is carried out noise testing, vehicle bridge 7 is arranged on the testing table 3, and the input end of vehicle bridge 7 is connected with second end 632 of the 3rd coupling shaft 63, two output terminals of vehicle bridge 7 are connected with second end 612 of first coupling shaft 61 and second end 622 of second coupling shaft 62 respectively, be about to the 3rd dynamometer 51 as the power input component, with first dynamometer 51 and second dynamometer 52 as power-output device, thereby can carry out noise testing to vehicle bridge 7.Similarly, this anechoic chamber also can be used in other component assembly etc. is carried out noise testing, for example for the component assembly that comprises gear case and vehicle bridge, wherein the output terminal of gear case is connected with the input end of vehicle bridge, then the input end of gear case can be connected with the 3rd dynamometer 53 as the power input component, two output terminals of vehicle bridge are connected with second dynamometer 52 with first dynamometer 51 as power-output device respectively, thereby carry out noise testing.Certainly, above-mentioned first dynamometer 51, second dynamometer 52 and the 3rd dynamometer 53 can be according to actual needs and at random as power input component or power-output devices, and are not limited to above-mentioned situation about enumerating.
Preferably, this anechoic chamber can also comprise second basis 8 and the elastic vibration isolation pad 9, described second basis 8 is positioned at described first basic 1 top, described elastic vibration isolation pad 9 is arranged between described first basis 1 and described second basis 8, and described testing table 3, first dynamometer 51, second dynamometer 52 and the 3rd dynamometer 53 are arranged on described second basis 8.Thereby vibration damping is carried out on second basis 8 and the testing table 3, first dynamometer 51, second dynamometer 52 and the 3rd dynamometer 53 that are arranged on second basis 8 by elastic vibration isolation pad 9 is set, can reduce the vibration natural frequency on second basis 8, for example this vibration natural frequency can be reduced to less than 8Hz, and then reduce the background noise of inside, anechoic chamber.
More preferably, described testing table 3, first dynamometer 51, second dynamometer 52 and the 3rd dynamometer 53 are separately positioned on described second basis 8 that is separated.Thereby make testing table 3, first dynamometer 51, second dynamometer 52 separate each other with the installation basis of the 3rd dynamometer 53, when having avoided the dynamometer operation to testing table 3 and the influence that is arranged on the vibration noise of the UUT on this testing table 3, improve the precision of test figure, and further reduced the background noise of inside, anechoic chamber.
More preferably, as shown in Figures 2 and 3, described first coupling shaft 61, second coupling shaft 62 and the 3rd coupling shaft 63 are supported on described second basis 8 by support 10 respectively.Thereby make described first coupling shaft 61, second coupling shaft 62 and the 3rd coupling shaft 63 obtain stable support, and reduce vibration by being supported on second basis 8.The strong point of each coupling shaft can be set as required, for example as shown in Figures 2 and 3, at first end 611,621 of first coupling shaft 61, second coupling shaft 62 and the 3rd coupling shaft 63 and 631 and second end 612,622 and 632 support 10 can be set supports.
1 and second basis 8, described first basis can adopt various suitable materials to make, as a kind of concrete embodiment, described first basis 1 can be made by concrete, and described second basis 8 can comprise concrete layer 81 and the cast iron layer 82 that is positioned at these concrete layer 81 tops.
Described first coupling shaft 61, second coupling shaft 62 and the 3rd coupling shaft 63 can adopt various suitable materials to make, for example steel.Yet preferably, described first coupling shaft 61, second coupling shaft 62 and the 3rd coupling shaft 63 are made by carbon fiber, because the axle that carbon fiber is made has flexible preferably, thereby can bear bigger moment, and can reduce the requirement of the right alignment of the UUT that is connected by this first coupling shaft 61, second coupling shaft 62 and the 3rd coupling shaft 63 and dynamometer widely, thereby make things convenient for the manufacturing and the installation process of anechoic chamber.
Described first coupling shaft 61, second coupling shaft 62 is used to be connected UUT and each dynamometer with the 3rd coupling shaft 63, can adopt various suitable connecting shaft mechanisms to connect, preferably, described first coupling shaft 61, first end 611 of second coupling shaft 62 and the 3rd coupling shaft 63,621 and 631 respectively by reed-type coupling body and described first dynamometer 51, second dynamometer 52 is connected with the 3rd dynamometer 53, described first coupling shaft 61, second end 612 of second coupling shaft 62 and the 3rd coupling shaft 63,622 and 632 are respectively arranged with the reed-type coupling body for use in being connected with described UUT.Promptly adopt the reed-type coupling body that UUT is connected with each dynamometer, this reed-type coupling body can bear bigger moment of torsion, and further vibration and noise reducing.
Claims (8)
1. anechoic chamber, this anechoic chamber comprises first basis, body of wall, testing table, dynamometer and coupling shaft, described wall construction is on described first basis and constitute test space, described testing table is positioned at the described test space, described dynamometer is positioned at outside the described test space, first end of described coupling shaft is connected with described dynamometer, second end of described coupling shaft passes described body of wall and extends towards described testing table, it is characterized in that, described dynamometer comprises first dynamometer, second dynamometer and the 3rd dynamometer, described coupling shaft comprises first coupling shaft, second coupling shaft and the 3rd coupling shaft, described first dynamometer, second dynamometer and the 3rd dynamometer are distributed in first side of described testing table respectively, the 3rd side on the perpendicular line of second side relative and the line that is positioned at this first side and second side with this first side, described first coupling shaft, first end of second coupling shaft and the 3rd coupling shaft respectively with described first dynamometer, second dynamometer is connected with the 3rd dynamometer, described first coupling shaft, second end of second coupling shaft and the 3rd coupling shaft passes described body of wall respectively and extends towards described testing table, for use in being connected with UUT.
2. anechoic chamber according to claim 1, it is characterized in that, this anechoic chamber also comprises second basis and the elastic vibration isolation pad, described second basis is positioned at top, described first basis, described elastic vibration isolation pad is arranged between described first basis and described second basis, and described testing table, first dynamometer, second dynamometer and the 3rd dynamometer are arranged on described second basis.
3. anechoic chamber according to claim 2 is characterized in that, described testing table, first dynamometer, second dynamometer and the 3rd dynamometer are separately positioned on described second basis that is separated.
4. according to claim 2 or 3 described anechoic chambers, it is characterized in that, described first coupling shaft, second coupling shaft and the 3rd coupling shaft respectively by stent support on described second basis.
5. according to each described anechoic chamber in the claim 1 to 3, it is characterized in that described first basis is made by concrete.
6. according to claim 2 or 3 described anechoic chambers, it is characterized in that described second basis comprises concrete layer and is positioned at the cast iron layer of this concrete layer top.
7. anechoic chamber according to claim 1 is characterized in that, described first coupling shaft, second coupling shaft and the 3rd coupling shaft are made by carbon fiber.
8. anechoic chamber according to claim 1, it is characterized in that, first end of described first coupling shaft, second coupling shaft and the 3rd coupling shaft is connected with described first dynamometer, second dynamometer and the 3rd dynamometer by the reed-type coupling body respectively, and second end of described first coupling shaft, second coupling shaft and the 3rd coupling shaft is respectively arranged with the reed-type coupling body for use in being connected with described UUT.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202777033U CN201600185U (en) | 2009-11-30 | 2009-11-30 | Noise reduction chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202777033U CN201600185U (en) | 2009-11-30 | 2009-11-30 | Noise reduction chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201600185U true CN201600185U (en) | 2010-10-06 |
Family
ID=42811247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202777033U Expired - Lifetime CN201600185U (en) | 2009-11-30 | 2009-11-30 | Noise reduction chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201600185U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102998124A (en) * | 2011-09-08 | 2013-03-27 | 北汽福田汽车股份有限公司 | NVH (noise, vibration and harshness) semi-anechoic room test system and method |
| CN103148927A (en) * | 2013-02-21 | 2013-06-12 | 奇瑞汽车股份有限公司 | Noise measuring system for engine accessory system in hemi-anechoic room |
| CN103883151A (en) * | 2012-12-20 | 2014-06-25 | 北汽福田汽车股份有限公司 | Engine noise detection semi-anechoic chamber |
| CN104897396A (en) * | 2015-06-16 | 2015-09-09 | 陕西法士特齿轮有限责任公司 | Mechanical transmission loaded noise test stand and test method |
| CN104897421A (en) * | 2015-06-23 | 2015-09-09 | 南车戚墅堰机车有限公司 | Laboratory used for locomotive entirety test |
| CN105223018A (en) * | 2015-09-29 | 2016-01-06 | 北汽福田汽车股份有限公司 | Pilot system |
-
2009
- 2009-11-30 CN CN2009202777033U patent/CN201600185U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102998124A (en) * | 2011-09-08 | 2013-03-27 | 北汽福田汽车股份有限公司 | NVH (noise, vibration and harshness) semi-anechoic room test system and method |
| CN102998124B (en) * | 2011-09-08 | 2015-07-08 | 北汽福田汽车股份有限公司 | NVH (noise, vibration and harshness) semi-anechoic room test system and method |
| CN103883151A (en) * | 2012-12-20 | 2014-06-25 | 北汽福田汽车股份有限公司 | Engine noise detection semi-anechoic chamber |
| CN103148927A (en) * | 2013-02-21 | 2013-06-12 | 奇瑞汽车股份有限公司 | Noise measuring system for engine accessory system in hemi-anechoic room |
| CN103148927B (en) * | 2013-02-21 | 2015-06-10 | 奇瑞汽车股份有限公司 | Noise measuring system for engine accessory system in hemi-anechoic room |
| CN104897396A (en) * | 2015-06-16 | 2015-09-09 | 陕西法士特齿轮有限责任公司 | Mechanical transmission loaded noise test stand and test method |
| CN104897421A (en) * | 2015-06-23 | 2015-09-09 | 南车戚墅堰机车有限公司 | Laboratory used for locomotive entirety test |
| CN105223018A (en) * | 2015-09-29 | 2016-01-06 | 北汽福田汽车股份有限公司 | Pilot system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201600185U (en) | Noise reduction chamber | |
| CN100447547C (en) | Resonance device for vibration experiment | |
| CN204730844U (en) | Unmanned aircraft inertia measuring module | |
| CN106153237A (en) | A kind of small-sized six-dimensional force and torque sensor | |
| US20020166711A1 (en) | Double-isolated, symmetric, high-damped mount system | |
| CN106124113A (en) | A kind of new six power and torque sensor | |
| CN101907523A (en) | Rigid body mode testing method for powertrain mounting system under loading condition | |
| CN104792486A (en) | Vibration-isolating element transverse mechanical impedance testing device | |
| CN105675312A (en) | Wheel force transfer function testing method and device in simulated complete vehicle state | |
| CN104483112A (en) | Fatigue test method and fixture thereof of rubber bushing | |
| CN2924509Y (en) | Engine test bench for anechoic chamber | |
| CN105973455B (en) | A kind of piezoelectric strain combined type microvibration measuring device | |
| JPH01145439A (en) | Sleeve type rubber shock absorber | |
| CN105699077A (en) | Testing stand for testing transmission error of mechanical gearbox of front drive automobile and comprehensive testing method | |
| CN209181912U (en) | New-energy automobile electric drive assembly noise test equipment | |
| CN105223018A (en) | Pilot system | |
| CN101915665B (en) | Static property test bed for diesel engine power transmission elastic components | |
| CN202075140U (en) | Automobile body intensity testing stand end wall loading device | |
| CN213360390U (en) | High-low temperature and noise test integrated system for hydraulic pump/motor | |
| CN103018494A (en) | Connecting tool of motor testing platform | |
| CN104677579B (en) | A kind of spring balancing system for the load vibration of liquid hydrogen catheter displacement | |
| CN109580240B (en) | Automobile engine torsional vibration testing arrangement | |
| CN206114698U (en) | Acceleration sensor | |
| CN210180668U (en) | NVH (noise, vibration and harshness) testing system for vehicle power transmission | |
| CN207408115U (en) | Automobile chassis shock absorbing bushing static state and dynamic rate detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101006 |
|
| CX01 | Expiry of patent term |