CN205530436U - Low noise driver's cabin structure and contain engineering machine tool of this driver's cabin - Google Patents
Low noise driver's cabin structure and contain engineering machine tool of this driver's cabin Download PDFInfo
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- CN205530436U CN205530436U CN201620124896.9U CN201620124896U CN205530436U CN 205530436 U CN205530436 U CN 205530436U CN 201620124896 U CN201620124896 U CN 201620124896U CN 205530436 U CN205530436 U CN 205530436U
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- noise
- sound absorbing
- noise elimination
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Abstract
The utility model belongs to engineering machine tool field specifically discloses a low noise driver's cabin structure and contain engineering machine tool of this driver's cabin, and seat rear portion position sets up the noise elimination chamber in the driver's cabin, adopts perforated plate sound absorbing structure, air bed sound absorbing structure and the design of porous sound absorbent, effectively reduce inside reverberation noise of driver's cabin and decay engine compartment internal noise and propagate in to the driver's cabin, but driver's cabin rear portion air intake design effective attenuation engine compartment noise is outwards propagated simultaneously. This driver's cabin noise eliminator is applicable to engineering vehicle, and easily manufacturing is practical reliable, effective attenuation driver's cabin internal noise and keep apart the route of engine compartment noise transmission in to the driver's cabin.
Description
Technical field
This utility model belongs to engineering machinery field, is specifically related to a kind of low noise cab structure and comprises this and drive
Sail the engineering machinery of room.
Background technology
Engineering machinery driving cabin noise is one of principal element affecting crew comfort, greatly affects people's
Psychology and physiological health.It is exposed to for a long time under noise, in fact it could happen that tinnitus and the phenomenon of agitation, even can
Cause becoming deaf.Along with internal combustion engine to high-power, at a high speed, light-weighted direction develop, also bring along noise, shake
The new problem of dynamic aspect.In recent years, along with the progress of society, engineering machinery driver is to engineering machinery comfortableness
Demand day by day increase, add the most perfect of relevant laws and regulations, noise and level of vibration and be increasingly becoming shadow
Ring product sales volume, an important indicator of measurement product quality.Research in terms of engineering machinery comfortableness is in China
Starting late, correlation experience and technology are the most ripe, and therefore the control of engineering machinery noise and vibration becomes
One problem demanding prompt solution.
The Chinese patent of application number 200980139606.0 discloses the engineering machinery with driver's cabin sound arrester,
This engineering machinery includes: lower running body；Upper rotation, has upper frame；Driver's cabin, has base plate,
This driver's cabin is arranged on described upper frame；And driver's cabin sound arrester.Wherein driver's cabin sound arrester has:
Base plate；Under-cab component, has the cab panel supporting driver's cabin, and this under-cab component is arranged
In the lower section of driver's cabin, form the under-cab space of the most all closing structures being closed together with base plate；
And resonator, it is lowered into the noise in under-cab space by sympathetic response effect.
Sound arrester disclosed in application number 200980139606.0, by changing under-cab space Guan Bi knot
The shape of structure, size also combine resonator and reach noise elimination purpose, belong to Active Noise Control structure, are subject in actual application
To power supply, the restriction of system stability, structure is more complicated, and relatively costly.Meanwhile, this noise elimination sound insulation dress
Put deadening frequency band and concentrate on the medium and low frequency section of below 400Hz, noise elimination purpose in high band cannot realize driver's cabin.
Utility model content
The purpose of this utility model is to overcome drawbacks described above, it is provided that a kind of low noise cab structure and comprise this and drive
Sail the engineering machinery of room.In driver's cabin, seat rear positions arranges noise elimination cavity, use sound absorbent perforated structure,
Air layer sound absorption structure and sound-absorbing porous material design, effectively reduce cabin interior noise and isolation electromotor
Cabin is the path of passing noise in driver's cabin, and rear cabin air inlet design simultaneously can effective attenuation enging cabin
Noise is outwards propagated.
In order to realize foregoing invention purpose, technical solution adopted in the utility model is: a kind of low noise is driven
Cell structure, including being arranged at the noise elimination cavity at seat rear, being positioned at the air inlet of noise elimination cavity both sides, it is characterised in that
Described noise elimination cavity is by being positioned at the anterior perforated plate of noise elimination cavity, being positioned at the tailgate at noise elimination cavity rear portion, be positioned at noise elimination cavity
The base plate of bottom and be positioned at the side plate of noise elimination cavity side and enclose and form, between noise elimination cavity and air inlet by side plate every
Open.
Aforesaid a kind of low noise cab structure, described perforated plate, tailgate glue respectively near noise elimination cavity side
Post sound absorbing layer a and sound absorbing layer b.
Aforesaid a kind of low noise cab structure, described perforated plate is positioned at cab seat rear, and thickness is
0.5～5mm, aperture 1～10mm, punching rate are more than 20%.
Aforesaid a kind of low noise cab structure, described sound absorbing layer a, sound absorbing layer b, material be glass cotton,
Rock wool or mineral wool, thickness 10～50mm；Noise elimination cavity thickness is less than 300mm.
Aforesaid a kind of low noise cab structure, is described noise elimination cavity between sound absorbing layer a, sound absorbing layer b,
Sound absorbing layer a and sound absorbing layer b is respectively positioned between driver's cabin and enging cabin.
A kind of engineering machinery, including driver's cabin, vehicle frame and equipment, described driver's cabin is described low noise
Cab structure.
Relative to prior art, this utility model has the advantages that
1) low noise driver's cabin arranges sound absorbent perforated structure and sound-absorbing porous material design, effectively in medium and low frequency section
Reduce reverberation noise in driver's cabin.
2) low noise driver's cabin combines air layer sound absorption structure and sound-absorbing porous material, in decay enging cabin inside
High-frequency noise is to driving indoor propagation.
3) low noise rear cabin is provided with air inlet design, and air inlet rear portion is provided with side plate, is not increasing
On the premise of enging cabin air intake resistance, effectively reduce electromotor interior noise and directly propagate outside machine.
4) this driver's cabin silencing apparatus is applicable to engineering truck, it is easy to processing and manufacturing, practical reliable, at full frequency band
Eliminate cabin interior noise, effective attenuation cabin interior noise and isolation enging cabin to transmit in driver's cabin
The path of noise.
Accompanying drawing explanation
Fig. 1 is engineering machinery overall diagram of the present utility model；
Fig. 2 is driver's cabin side view of the present utility model；
Fig. 3 is driver's cabin rearview of the present utility model；
Fig. 4 is driver's cabin sectional view of the present utility model；
Fig. 5 is driver's cabin partial sectional view of the present utility model；
Fig. 6 is driver's cabin sectional view of the present utility model；
Fig. 7 is driver's cabin section view explosive view of the present utility model；
Wherein, 1. driver's cabin 2. enging cabin 3. electromotor 4. fan 5. vehicle frame 6. equipment 7. is bored a hole
Plate
8. tailgate 9. resonant cavity 10. base plate 11. sound absorbing layer a 12. sound absorbing layer b 13. air inlet 14. side plate.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is further described.Following example are only used for clearly saying
Bright the technical solution of the utility model, and protection domain of the present utility model can not be limited with this.
Sound-absorbing material kind is a lot, can be divided into goods class and mortar class by shape；By material can be divided into glass cotton,
Rock wool, mineral wool etc..The sound absorbing mechanism of sound absorption structure, is to utilize Helmholz resonance sound absorption principle, conventional suction
Acoustic form has air layer sound absorption structure, sound absorbent perforated structure and wedge absorber etc..Wherein, simplest it is exactly
The sound absorption structure stayed in the air layer after sound-absorbing material.
Air layer sound-absorbing structure, is to leave certain thickness air layer behind at porous material, makes material with below
Rigidity assembly wall maintain a certain distance, form air layer or cavity, its sound-absorption coefficient increases, special
It not that the sound absorption qualities of low frequency can be substantially improved.
Sound absorbent perforated structure, is the resonance sound-absorbing structure being made up of perforated plate, according to many its points of major general of perforation
Become single hole resonance sound-absorbing structure and porous resonance sound-absorbing structure.For single hole resonance sound-absorbing structure, i.e. Helmholtz
Resonance sound-absorbing structure, its resonant frequency tried to achieve by below equation:
Q is perforated plate punching rate, and h is the thickness of cavity, and l is inlet length.
For porous resonance sound-absorbing structure, the parallel-connection structure of single hole resonance sound-absorbing structure can essentially be regarded as.Cause
This, the sound absorbing capabilities of porous resonance sound-absorbing structure is better than the acoustically effective of single hole resonance sound-absorbing structure, passes through hole
The optimization design of parameter can be effectively improved the performances such as its sound sucting band.The resonant frequency of multiple punching plate and perforated plate
Punching rate, cavity depth have relation, also have relation with diameter and the hole thickness of perforated plate.
According to Fig. 1-7, a kind of low noise driver's cabin 1, including perforated plate 7, tailgate 8, noise elimination cavity 9, base plate
10, sound absorbing layer a 11, sound absorbing layer b 12, air inlet 13, side plate 14, noise elimination cavity 9 is arranged on seat rear
Position (i.e. rear), air inlet 13 is positioned at noise elimination cavity 9 both sides, and noise elimination cavity 9, air inlet 13 pass through side plate
14 separate.
Described noise elimination cavity 9 is made up of perforated plate 7, tailgate 8, base plate 10, side plate 14, is bolted
Forming a cavity structure, perforated plate 7, tailgate 8 are pasted with sound absorbing layer a, suction respectively near noise elimination cavity 9 side
Sound-absorbing layer b, noise elimination cavity 9 thickness is less than 300mm.
Described perforated plate 7 is positioned at driver's cabin 1 seat rear (i.e. rear), noise elimination cavity 9 forward position, thickness
Be 0.5～5mm, aperture 1～10mm, punching rate is more than 20%.
Described sound absorbing layer a, sound absorbing layer b, its material is the sound-absorbing porous materials such as glass cotton, rock wool, mineral wool,
Thickness 10～50mm.
Reverberation noise within driver's cabin 1, it is internal that the orifice plate 7 that wears long enters noise elimination cavity 9, perforated plate 7 and noise elimination
Chamber 9 forms perforated plate resonance acoustical absorption structure, the reverberation noise of effective attenuation cabin interior medium and low frequency section, eliminates the noise
Sound absorbing layer a within chamber 9, sound absorbing layer b filter cabin interior high frequency reverberation noise further.
Sound absorbing layer a, sound absorbing layer b are between driver's cabin 1 and enging cabin 2.Sound absorbing layer a, sound absorbing layer b
Noise elimination cavity 9 is left in centre, forms air layer sound-absorbing structure, effective attenuation electromotor 3 noise, fan 4 noise
To driving indoor propagation.
Described air inlet 13, uses punching or window blind hatch design, and rear portion is provided with side plate 14, by changing
Become enging cabin 2 inlet air to flow to, on the premise of not increasing enging cabin air intake resistance, effectively reduce
In enging cabin 2, noise is directly propagated outside machine.
A kind of engineering machinery, including driver's cabin 1, vehicle frame 5 and equipment 6, more than described driver's cabin 1 is
Described low noise driver's cabin 1.
It is noted that preferably noise elimination cavity 9 is arranged on seat rear position, optional replacement scheme is for eliminating the noise
Chamber 9 is arranged on driver's cabin top or floor location.Preferably noise elimination cavity 9 viscous posts sound absorbing layer, noise elimination cavity 9
Inside is not pasted sound-absorbing and is equally reduced the purpose of cabin interior noise.
Of the present utility model ultimate principle, principal character and advantage have more than been shown and described.The technology of the industry
Personnel are it should be appreciated that this utility model is not restricted to the described embodiments, described in above-described embodiment and description
Principle of the present utility model is simply described, on the premise of without departing from this utility model spirit and scope, this reality
Also having various changes and modifications with novel, these changes and improvements both fall within claimed this utility model model
In enclosing.This utility model claims scope and is defined by appending claims and equivalent thereof.
Claims (6)
1. a low noise cab structure, including being arranged at the noise elimination cavity at seat rear, being positioned at the air inlet of noise elimination cavity both sides, it is characterized in that, described noise elimination cavity, by being positioned at the anterior perforated plate of noise elimination cavity, being positioned at the tailgate at noise elimination cavity rear portion, be positioned at the base plate bottom noise elimination cavity and be positioned at the side plate of noise elimination cavity side and enclose and form, is separated by side plate between noise elimination cavity and air inlet.
A kind of low noise cab structure the most according to claim 1, it is characterised in that described perforated plate, tailgate are pasted with sound absorbing layer a and sound absorbing layer b respectively near noise elimination cavity side.
A kind of low noise cab structure the most according to claim 1, it is characterised in that described perforated plate is positioned at cab seat rear, thickness is 0.5～5mm, aperture 1～10mm, punching rate is more than 20%.
A kind of low noise cab structure the most according to claim 2, it is characterised in that described sound absorbing layer a, sound absorbing layer b, material is glass cotton, rock wool or mineral wool, thickness 10～50 mm；Noise elimination cavity thickness is less than 300mm.
A kind of low noise cab structure the most according to claim 2, it is characterised in that being described noise elimination cavity between sound absorbing layer a, sound absorbing layer b, sound absorbing layer a and sound absorbing layer b is respectively positioned between driver's cabin and enging cabin.
6. an engineering machinery, including driver's cabin, vehicle frame and equipment, it is characterised in that described driver's cabin is the low noise cab structure described in claim 1-5 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620124896.9U CN205530436U (en) | 2016-02-17 | 2016-02-17 | Low noise driver's cabin structure and contain engineering machine tool of this driver's cabin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620124896.9U CN205530436U (en) | 2016-02-17 | 2016-02-17 | Low noise driver's cabin structure and contain engineering machine tool of this driver's cabin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205530436U true CN205530436U (en) | 2016-08-31 |
Family
ID=56777536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620124896.9U Active CN205530436U (en) | 2016-02-17 | 2016-02-17 | Low noise driver's cabin structure and contain engineering machine tool of this driver's cabin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205530436U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106274761A (en) * | 2016-11-10 | 2017-01-04 | 徐工集团工程机械有限公司 | Seat and driver's cabin |
| CN113183891A (en) * | 2021-05-31 | 2021-07-30 | 东风商用车有限公司 | Toolbox assembly and commercial car driver's cabin with advance exhaust function |
-
2016
- 2016-02-17 CN CN201620124896.9U patent/CN205530436U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106274761A (en) * | 2016-11-10 | 2017-01-04 | 徐工集团工程机械有限公司 | Seat and driver's cabin |
| CN113183891A (en) * | 2021-05-31 | 2021-07-30 | 东风商用车有限公司 | Toolbox assembly and commercial car driver's cabin with advance exhaust function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220722 Address after: No.26 tuolanshan Road, Xuzhou Economic and Technological Development Zone, Xuzhou City, Jiangsu Province Patentee after: Jiangsu XCMG Guozhong Laboratory Technology Co.,Ltd. Address before: 221004 26 Jinshan Road, Jinshan Bridge Economic Development Zone, Xuzhou, Jiangsu Patentee before: XCMG CONSTRUCTION MACHINERY Co.,Ltd. |
|
| TR01 | Transfer of patent right |