CN101393735A - De-noising apparatus for vehicle-mounted electricity generating set compartment - Google Patents
De-noising apparatus for vehicle-mounted electricity generating set compartment Download PDFInfo
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- CN101393735A CN101393735A CNA200710192483XA CN200710192483A CN101393735A CN 101393735 A CN101393735 A CN 101393735A CN A200710192483X A CNA200710192483X A CN A200710192483XA CN 200710192483 A CN200710192483 A CN 200710192483A CN 101393735 A CN101393735 A CN 101393735A
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- vehicle
- sound
- generating set
- electricity generating
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Abstract
The invention relates to the noise reduction technology after the generator set is vehicle-mounted, in particular to a generator set cabin which is noise-absorbing and noise-insulating, comprises a perforated plate, noise-absorbing foam, an efficient noise-insulating blanket, steel plates, polyurethane foam materials and aluminum plates, and is mainly and technically characterized in that the noise is absorbed and then insulated so as to eliminate the noise within the frequency range of the generator set to the greatest extent through the reasonable selection of the sound-absorbing materials. When being produced, the perforated plate and the noise-absorbing foam are sequentially attached to the efficient noise-insulating blanket by adopting the noise-absorbing structure thereof so as to serve the noise-absorbing function; and the efficient noise-insulating blanket, the steel plates, the polyurethane foam materials and the aluminum plates are sequentially adopted so as to well serve the noise-insulating function, thereby realizing the noise reduction of the generator set.
Description
Technical field
The present invention relates to vehicle-mounted electricity generating set compartment, particularly the noise reduction technology of middle-size and small-size vehicle-mounted electricity generating set compartment.
Background technology
Along with the direction of all kinds of vehicle equipment towards high integration, high maneuverability develops, will certainly bring the increase of power devices load, and the increase of oily machine also will increase noise, and for satisfy the requirement that equipment is worked in the special vehicle in advancing, genset need be worked onboard, so will be to bringing great noise in the work chamber.At present, the domestic way of noise insulation that generally adopts is carried out noise reduction to crew compartment, and sound wave incident wallboard causes vibration, run into pugging, have only the fraction sound wave energy to be absorbed, most of sound wave is reflected, and may cause the stack of sound wave, even produce bigger noise.Its noise figure is about 80dB behind China's carrying of all kinds of vehicle oil locomotive noise reduction. and when the staff is as easy as rolling off a log tired under such noise circumstance, cause work efficiency to descend, even increased the error rate of work. the staff can not be worked in the cabin for a long time.
Summary of the invention
For more comfortable working environment is provided to the staff, the invention provides a kind of novel on-vehicle electricity generating set compartment, it can reduce crew compartment effectively and import the interior noise of work chamber into, and its desired value is controlled at about 70dB.
The technical solution adopted for the present invention to solve the technical problems is: the present invention includes cabin body and genset, its middle deck body is made of sound-absorbing structure and pugging, interior be sound-absorbing structure, outward for pugging; Sound-absorbing structure comprises the acoustical cotton 2 of porous plate 1 and parcel thereof; Pugging comprises efficient deadening felt 3, steel plate 4, aluminium sheet 6, filled with polyurethane foam expanded material 5 between steel plate 4 and aluminium sheet 6.
The invention has the beneficial effects as follows: it can reduce the noise that imports in the work chamber effectively, and noise is controlled at about 70dB.
Description of drawings
Fig. 1 is the overall layout chart of crew compartment.
Fig. 2 is the arrangement of pugging.
1 porous plate among Fig. 2,2 acoustical cottons, 3 efficient sound-insulating felts, 4 steel plates, 5 polyurethane foam materials, 6 aluminium sheets.
Embodiment
Introduce concrete structure of the present invention in detail below in conjunction with embodiment accompanying drawing 1 and Fig. 2.Draw the main frequency interval at its noise place according to the model of genset, and this main frequency section carried out noise reduction. what noise reduction adopted is to inhale the back earlier every principle, the noise that genset produces is selected reasonable manner, reduce the noise figure in the work chamber effectively.Present embodiment comprises cabin body and genset, and its middle deck body is made of sound-absorbing structure and pugging, and interior is that sound-absorbing structure is pugging outward, and the noise of genset absorbs through sound-absorbing structure earlier, is cut off by pugging, to reach the purpose of noise reduction again.Sound-absorbing structure comprises the acoustical cotton 2 of porous plate 1 and parcel thereof; Pugging comprises efficient deadening felt 3, steel plate 4, aluminium sheet 6, filled with polyurethane foam expanded material 5 between steel plate 4 and aluminium sheet 6.In order to allow a part of noise discharge with waste gas by smoke exhaust pipe, should closely be connected with A place, genset junction at smoke exhaust pipe, the B place that contacts with bulkhead at smoke exhaust pipe is provided with sound suppressor, import in the work chamber by other aperture again after noise from discharging out of my cabin preventing, reach the purpose of effective control noise figure.
Among Fig. 2, being to utilize to absorb the back separation principle earlier to the noise removing of body inside, cabin, is one deck porous plate 1 at the crew compartment inside surface, and the aperture of this porous plate and pitch-row can be selected corresponding value according to the noise frequency that genset produced.The reduction of the number percent of perforated area further improves low frequency performance, but then is a sound energy reflection body basically for high frequency.At the skin parcel acoustical cotton 2 of porous plate, the thickness of this acoustical cotton can calculate according to noise figure, selects suitable thickness, to satisfy request for utilization.Outside the acoustical cotton 2 is efficient deadening felt 3, is steel plate 4 outside the deadening felt 3, can effectively hinder the propagation of low-frequency noise.Pugging outermost one deck is an aluminium sheet 6, also can hinder propagation of noise to a certain extent.Be polyurethane foam material 5 between steel plate and the aluminium sheet, this kind material has very high sound insulation insulation effect.
Claims (4)
1, a kind of novel on-vehicle electricity generating set compartment denoising device is made up of cabin body and genset.It is characterized in that the cabin body is made of sound-absorbing structure and pugging, interior is sound-absorbing structure, is outward pugging; Sound-absorbing structure comprises the acoustical cotton (2) of porous plate (1) and parcel thereof; Pugging comprises efficient deadening felt (3), steel plate (4), aluminium sheet (6), accompanies polyurethane foam material (5) between steel plate (4) and aluminium sheet (6).
2,, it is characterized in that the aperture of porous plate (1) and pitch-row are calculated according to the noise frequency that genset produced to select value accordingly according to claim 1 described de-noising apparatus for vehicle-mounted electricity generating set compartment.
3, according to claim 1 described de-noising apparatus for vehicle-mounted electricity generating set compartment, the thickness that it is characterized in that acoustical cotton (2) calculates according to the noise figure that genset produced selects suitable thickness.
4, according to claim 1 described de-noising apparatus for vehicle-mounted electricity generating set compartment, the A place, junction that it is characterized in that smoke exhaust pipe and genset is provided with sound suppressor for closely to contact at smoke exhaust pipe and B place, body wall contact position, cabin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200710192483XA CN101393735A (en) | 2007-12-04 | 2007-12-04 | De-noising apparatus for vehicle-mounted electricity generating set compartment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200710192483XA CN101393735A (en) | 2007-12-04 | 2007-12-04 | De-noising apparatus for vehicle-mounted electricity generating set compartment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101393735A true CN101393735A (en) | 2009-03-25 |
Family
ID=40493999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200710192483XA Pending CN101393735A (en) | 2007-12-04 | 2007-12-04 | De-noising apparatus for vehicle-mounted electricity generating set compartment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101393735A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101693471B (en) * | 2009-10-16 | 2013-07-31 | 威海广泰空港设备股份有限公司 | Low-noise aircraft ground air-conditioning car |
| CN105752857A (en) * | 2016-05-18 | 2016-07-13 | 无锡石油化工起重机有限公司 | Noise eliminating type gantry crane |
| CN103903608B (en) * | 2012-12-27 | 2018-12-25 | 浙江艾迪雅汽车部件新材料有限公司 | A kind of efficient acoustic material and preparation method thereof |
| CN114526157A (en) * | 2022-01-25 | 2022-05-24 | 江苏捷诚车载电子信息工程有限公司 | Heat dissipation and noise reduction device for square cabin of high-power generator set |
-
2007
- 2007-12-04 CN CNA200710192483XA patent/CN101393735A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101693471B (en) * | 2009-10-16 | 2013-07-31 | 威海广泰空港设备股份有限公司 | Low-noise aircraft ground air-conditioning car |
| CN103903608B (en) * | 2012-12-27 | 2018-12-25 | 浙江艾迪雅汽车部件新材料有限公司 | A kind of efficient acoustic material and preparation method thereof |
| CN105752857A (en) * | 2016-05-18 | 2016-07-13 | 无锡石油化工起重机有限公司 | Noise eliminating type gantry crane |
| CN114526157A (en) * | 2022-01-25 | 2022-05-24 | 江苏捷诚车载电子信息工程有限公司 | Heat dissipation and noise reduction device for square cabin of high-power generator set |
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Open date: 20090325 |