CN2579737Y - Measuring device for noise in car - Google Patents
Measuring device for noise in car Download PDFInfo
- Publication number
- CN2579737Y CN2579737Y CN 02258449 CN02258449U CN2579737Y CN 2579737 Y CN2579737 Y CN 2579737Y CN 02258449 CN02258449 CN 02258449 CN 02258449 U CN02258449 U CN 02258449U CN 2579737 Y CN2579737 Y CN 2579737Y
- Authority
- CN
- China
- Prior art keywords
- main supporting
- supporting rod
- noise measurement
- car noise
- internal car
- 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 - Fee Related
Links
- 238000005259 measurement Methods 0.000 claims abstract description 13
- 238000006073 displacement reaction Methods 0.000 claims description 10
- 230000007246 mechanism Effects 0.000 claims description 9
- 238000009434 installation Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000007799 cork Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
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- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The utility model relates to a measuring device for noise in cars, which comprises a supporting frame formed by two main supporting rods which are connected, fixing elements, adjusting elements, etc. Two fixing elements are arranged on the main supporting rods and are used for fixing the supporting frame on an established member rod near a measuring point in a carriage. The adjusting elements are arranged on the main supporting rods and are provided with supporting rods provided with supporting frames, and a trailing frame is provided with a microphone holder. Various elements and other accessories can rotate and displace and can be fixed on any position, so the microphone can be positioned on the measuring point accurately and firmly. The positioning accuracy satisfies the specified requirements of Chinese Standard, the measuring result is accurate and reliable, and the comparability of the measuring data is good. The utility model has the advantages of simple structure and easy manufacturing, and the carry, installation and operation can be completed only by one person. The device can be processed into serial finished goods and can be used for all of the cars required by the measurement for noise in cars.
Description
Technical field: the utility model relates to a kind of acoustic measurement device, exactly is a kind of internal car noise measurement mechanism.
Background technology: QCT57-1993 " about the automobile internal car noise method of measurement of at the uniform velocity travelling " strict regulations measure used instrument, condition, method and the measuring point of internal car noise.Instrument comprises microphone (microphone, microphone) and sound meter and the towing cable line that is connected both usefulness.Microphone is placed on the measuring point, and the standard code microphone should point to automobile working direction level and put, and the reading of sound meter promptly is the noise of this measuring point.Measuring point is in the space in railway carriage, the point of being determined by three-dimensional dimension.Standard code should be accurate to 2 centimetres, and that the measuring point number requires is abundant, and one of them must measuring point be the operating seat place.
At least need two people at present both at home and abroad when measuring internal car noise, the hand-held microphone of a people is placed on the measuring point, stops for 5 seconds at least, and another people observes sound meter and does the meter record.Yet standard is also advised for M
1Should not comprise chaufeur and landman in the car when measuring, at this moment be fixing microphone, have to build a framework temporarily or draw cross bar, messenger wire rope or the like more than two people with N class car.No matter microphone is hand-held or working fastening, loaded down with trivial details, effort is discussed for the present, waving of microphone, shake is inevitable, and its survey precision can't satisfy standard code, because involved result is not to be certain measuring point noise, but with this point the dry sound of some points in to be that the three dimensional space at center is general enclose, the ball in this space half through definitely greater than 2CM, most of in the practice greater than 5CM even 10CM, so the take off data comparability is poor.
Summary of the invention: problem to be solved in the utility model is when measuring internal car noise, with microphone exactly and be to be securely fixed on the measuring point of regulation.
Design of the present utility model is to be attachment point with near the fixed beam existing measuring point in the railway carriage (cross bar or vertical rod), but design an energy clamping microphone, its each annex can rotation on the plane separately, and can be on arbitrary position fix and device relative displacement, this device is fixed on the set rod member, by rotation and displacement, microphone just can be like clockwork along automobile working direction horizontal location on measuring point.
The design of this device comprises bracing frame and the retaining element that is made of two interconnective main supporting rods, adjusts element.Two main supporting rods can be in same plane, also can be not in same plane; Two main supporting rods can connect by fixed type, also can movablely connect, and so-called movable connection is meant: when same plane, a main supporting rod can be around another main supporting rod rotation, and not when same plane, a main supporting rod can be around connecting the quarter butt rotation; At least one main supporting rod change length of can stretching wherein.When captive joint, two main supporting rods are preferably vertically basic or antarafacial is vertical substantially.
The effect of two main supporting rods, a main supporting rod is used for fixing, and by two retaining elements this main supporting rod and whole bracing frame is fixed in the railway carriage on the set rod member; Two retaining elements can be fixed blocks, being used for mobilizable set rod member, also can be stationary clamp, can be clamped in fixing promptly deciding on the rod member, wherein at least one retaining element can be on main supporting rod slide displacement so that impose adjusting according to the particular case of set rod member.Another root main supporting rod is by adjusting element and other annexes location microphone.
Described annex mainly comprises pole, carriage and microphone folder etc.
Adjust element and be positioned on another main supporting rod, can rotate around main supporting rod, preferably can also slide displacement, adjust element and can be slide block type, also can be clamp-type.When the slide block mesopore is through hole, just can be equipped with the bolt of rear end plate location at the main supporting rod top offset.Strut fixation is being adjusted on the element.Carriage is positioned on the pole, can rotate around pole, preferably can also slide displacement.
The microphone folder is installed on the carriage, can install by knob, also can install by a pressure pin, and at this moment the microphone folder is positioned on the pressure pin, and can rotate and displacement.
This device is to use like this, near at first selecting to measure in the railway carriage set rod member is as attachment point, fixed pedestal bridge thereon then, by main supporting rod with adjust the element coarse adjustment to determine point position, the last good microphone of clamping, fine setting by carriage and microphone folder just can be positioned at microphone on the measuring point accurately, securely, and its precision definitely satisfies the requirement of standard code.Result of a measurement accurately and reliably, the take off data good comparability
The utility model is simple in structure, and handling ease is carried installation and operation is very convenient.Only need a landman just can finish like a cork.In addition, can also be processed into the supporting use of series of products, can need measure the automotive use of noise in the car for all according to different automobile types and measuring point design.
Description of drawings:
Fig. 1 is a structural representation of the present utility model, and two main supporting rods 1 are connected with 2 antarafacials, vertical fixing formula.
Fig. 2 is two main supporting rods 1 and 2 movable connection structure scheme drawings, realizes fixing by captive nut 9 and packing ring 11.
Fig. 3 is retaining element 3 scheme drawings, and A is the fixed block formula, and B is the geometrical clamp formula.
Fig. 4 adjusts element 4 structural representations, and C is a slide block type, and through hole 8 and bolt of rear end plate 9 are arranged, and D is a clamp-type.
To be microphone folder 7 be installed in structural representation on the carriage 6 by pressure pin 10 to Fig. 5.
Concrete implementation: existing to measure noise is example to measure in the travel incognito car driver's seat top, as shown, is attachment point with two pins of seat upper binding head pillow, and in conjunction with the accompanying drawings, non-limiting examples is described below:
As shown in Figure 1, get tubing process support bridge, the main strut 1 that constitutes support is connected with fixed type, and antarafacial is vertical.Main supporting rod 1 has two fixed blocks 3, wherein fix at rod end for one, another can be on bar slide displacement.The effect of fixed block be with bracing frame be fixed on the headrest under two pins on.The structure of fixed block as shown in Figure 3A, two orthogonal through holes 8 mate a bolt of rear end plate 9 separately.
There is the slide block 4 of adjustment the end of main supporting rod 2, and is rotatable, and is furnished with bolt of rear end plate 9 location.Adjust on the slide block 4 and be fixed with pole 5, carriage 6 is arranged on the pole 5, microphone presss from both sides 7 knob formulas and is installed on the carriage 7.
Claims (7)
1, a kind of internal car noise measurement mechanism is characterized in that:
1. two interconnected main supporting rods (1) and (2) constitute a bracing frame, main supporting rod (1) and (2) can be in same planes, also can be not in same planes, and perhaps fixed type connects, perhaps movable connection, wherein at least one main supporting rod change length of can stretching;
2. on the main supporting rod (1) two retaining elements (3) are arranged, wherein at least one retaining element can be gone up slide displacement at main supporting rod (1);
3. on the main supporting rod (2) rotatable and orientable adjustment element (4) is arranged, adjust element (4) and go up fixedly pole (5), rotatable and orientable carriage (6) is arranged on the pole (5), be equipped with rotatablely on the carriage (6), and orientable microphone presss from both sides (7).
2, internal car noise measurement mechanism according to claim 1 is characterized in that: main supporting rod (1) is connected with (2) fixed type, and not in same plane, antarafacial is vertical.
3, internal car noise measurement mechanism according to claim 1 and 2 is characterized in that: retaining element (3) is a fixed block, and two mutually perpendicular through holes (8) and supporting location bolt of rear end plate (9) thereof are arranged on it.
4, internal car noise measurement mechanism according to claim 1 is characterized in that: adjusting element (4) is slide block type, and its mesopore can be through hole (8), and location bolt of rear end plate (9) is arranged.
5, according to claim 1 or 4 described internal car noise measurement mechanisms, it is characterized in that: adjust element (4) and can go up slide displacement at main supporting rod (2).
6, internal car noise measurement mechanism according to claim 1 is characterized in that: carriage (6) can be gone up slide displacement pole (5).
7, internal car noise measurement mechanism according to claim 1 is characterized in that; Microphone folder (7) knob formula is installed on the carriage (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02258449 CN2579737Y (en) | 2002-11-15 | 2002-11-15 | Measuring device for noise in car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02258449 CN2579737Y (en) | 2002-11-15 | 2002-11-15 | Measuring device for noise in car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2579737Y true CN2579737Y (en) | 2003-10-15 |
Family
ID=33726185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02258449 Expired - Fee Related CN2579737Y (en) | 2002-11-15 | 2002-11-15 | Measuring device for noise in car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2579737Y (en) |
-
2002
- 2002-11-15 CN CN 02258449 patent/CN2579737Y/en not_active Expired - Fee Related
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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 |
Owner name: SAIC CHERY AUTOMOBILE CO., LTD. Free format text: FORMER NAME OR ADDRESS: SAIC CHERY AUTOMOBILE CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: No. 8, Changchun Road, Wuhu economic and Technological Development Zone, Anhui, Wuhu Province: 241002 Patentee after: Saic Chery Automobile Co., Ltd. Address before: No. 8, Changchun Road, Wuhu economic and Technological Development Zone, Anhui, Wuhu Province: 241002 Patentee before: Qirui Automobile Co., Ltd., Shangqi Group |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20031015 Termination date: 20091215 |