CN102322326A - Novel muffler for excavator - Google Patents
Novel muffler for excavator Download PDFInfo
- Publication number
- CN102322326A CN102322326A CN201110189723A CN201110189723A CN102322326A CN 102322326 A CN102322326 A CN 102322326A CN 201110189723 A CN201110189723 A CN 201110189723A CN 201110189723 A CN201110189723 A CN 201110189723A CN 102322326 A CN102322326 A CN 102322326A
- Authority
- CN
- China
- Prior art keywords
- hush pipe
- muffling
- pipe
- muffling tube
- baffler
- 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.)
- Granted
Links
- 238000004080 punching Methods 0.000 claims abstract description 19
- 230000000694 effects Effects 0.000 abstract description 4
- 238000003780 insertion Methods 0.000 abstract 3
- 230000037431 insertion Effects 0.000 abstract 3
- 238000005192 partition Methods 0.000 abstract 1
- 238000013016 damping Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
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Abstract
The invention discloses a novel muffler for an excavator. The muffler comprises a shell which encircles a muffling tube I, a muffling tube II and a muffling tube III, wherein the middle of the muffling tube II is partitioned into two cavities, namely a front cavity and a rear cavity, by a partition board; each of the two cavities is partitioned into two parts, namely an upper part and a lower part; the two cavities are communicated with each other by adopting an inner insertion pipe; the inner insertion pipe is designed as a diagonal slope; and the punching rates of the muffling tube I, the muffling tube II and the muffling tube III are between 8.9% and16.4% and are increased sequentially, i.e., the punching rate of the muffling tube III is larger than that of the rear cavity of the muffling tube II, the punching rate of the rear cavity of the muffling tube II is larger than that of the front cavity of the muffling tube II, and the punching rate of the front cavity of the muffling tube II is larger than that of the muffling tube I. By fully using the toning function of a punching pipe, the muffling performance of a frequency band can be improved; a slope design of the inner insertion pipe is adopted, so that the distribution of flow fields is improved; and simultaneously, a certain muffling effect can be achieved.
Description
Technical field
The present invention relates to a kind of new-type baffler that is used for excavator, belong to engineering machinery field.
Background technique
At present, hydraulic shovel baffler great majority practical on the market are 3 cavity configurations, and the chamber number is limited, and punching rate also is more or less the same, and erasure effect is slightly inadequate, and noise reduction is undesirable.
Summary of the invention
For improving the noise reduction of baffler; We have invented a kind of new-type baffler that is used for excavator, and it comprises that housing, said housing surround hush pipe I, hush pipe II, hush pipe III, and the centre of wherein said hush pipe II is separated into former and later two chambeies by dividing plate; Be separated into two-part up and down in two chambeies again; Adopt interpolation pipe to be communicated with between two chambeies, interpolation pipe is designed to the groove type of cutting sth. askew, and the punching rate of hush pipe I, hush pipe II, hush pipe III is between 8.9%-16.4%; And the distribution of punching rate increases successively, i.e. the hush pipe III>back cavity of hush pipe II>ante-chamber of hush pipe II>the hush pipe I.
The centre of hush pipe II is separated into former and later two chambeies by dividing plate, is separated into two-part (seeing accompanying drawing 4, accompanying drawing 5, accompanying drawing 6) up and down in two chambeies again, can improve the medium-high frequency sound-damping qualities.
Adopt interpolation pipe to be communicated with between two chambeies, can eliminate the frequency of passing through of low-frequency range noise; Interpolation pipe is designed to the groove type of cutting sth. askew, and improves the noise flowing field pattern.
Whole baffler has four sections perforated pipes, and punching rate is between 8.9%-16.4%, and increase successively, can make full use of the disc-jockey functionality of perforated pipe, improves the frequency range performance muffler.
The position of the two ends port of interpolation pipe is in 1/4 place of ante-chamber and back cavity length, can reduce medium and low frequency section noise better like this, and erasure effect is especially obvious.
The punching rate of the ante-chamber of said hush pipe II is 10%-12.3%; The punching rate of the back cavity of said hush pipe II is 12.3%-14.6%; The punching rate of said hush pipe III is 14.6%-16.4%.These punching rates so are provided with, be the inventor through testing gained many times, like this, sound can be eliminated the sound of multiple frequency range through noise reduction layer by layer, erasure effect is very good.
The present invention has been owing to adopted said structure, has rational in infrastructurely, compact, and the functional reliability advantages of higher has increased sound-damping qualities, and noise reduction is remarkable.
Description of drawings
Accompanying drawing 1 partly cuts open plan view for baffler of the present invention.
Accompanying drawing 2 partly cuts open the A-A sectional view of plan view for baffler of the present invention.
Accompanying drawing 3 partly cuts open the side view of plan view for baffler of the present invention.
The plan view of 4 baffler hush pipe II of the present invention of accompanying drawing.
Accompanying drawing 5 is the A-A sectional view of baffler hush pipe II plan view of the present invention.
Accompanying drawing 6 is the B-B sectional view of baffler hush pipe II plan view of the present invention.
Accompanying drawing 7 is baffler hush pipe I structural representation of the present invention.
Accompanying drawing 8 is baffler hush pipe III structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is done further description:
The air that motor is discharged gets in baffler first chamber through hush pipe I (seeing accompanying drawing 7); In upper and lower two hush pipes (2) that get into baffler hush pipe II ante-chamber (seeing accompanying drawing 4) after the preliminary noise reduction of first order perforated pipe, the noise reduction respectively; Promptly in the expansion chamber of left side; And then get into hush pipe II back cavity through both sides interpolation pipe (4) after noise reduction, the noise reduction; Be in the expansion chamber of right side,, discharge by tailpipe after the last noise reduction of perforation process hush pipe III, the noise reduction through getting into the hush pipe III after upper and lower two hush pipes (2) noise reduction, the noise reduction.Baffler of the present invention is through after increasing the chamber number and setting up corrective measure optimal design such as interpolation pipe, and is obvious through the field testing noise reduction, mated the excavator mass marketed, is highly commended by customers deeply.
Claims (6)
1. new-type baffler that is used for excavator is characterized in that:
Said baffler comprises that housing, said housing surround hush pipe I, hush pipe II, hush pipe III; The centre of wherein said hush pipe II is separated into former and later two chambeies by dividing plate; Be separated into two-part up and down in two chambeies again; Adopt interpolation pipe to be communicated with between two chambeies, interpolation pipe is designed to the groove type of cutting sth. askew, and the punching rate of hush pipe I, hush pipe II, hush pipe III is between 8.9%-16.4%; And the distribution of punching rate increases successively, i.e. the hush pipe III>back cavity of hush pipe II>ante-chamber of hush pipe II>the hush pipe I.
2. baffler according to claim 1, the position of the two ends port of wherein said interpolation pipe are in 1/4 place of ante-chamber and back cavity length.
3. baffler according to claim 1, the punching rate of wherein said hush pipe I are 8.9%-10%.
4. baffler according to claim 1, the punching rate of the ante-chamber of wherein said hush pipe II are 10%-12.3%.
5. baffler according to claim 1, the punching rate of the back cavity of wherein said hush pipe II are 12.3%-14.6%.
6. baffler according to claim 1, the punching rate of wherein said hush pipe III are 14.6%-16.4%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110189723 CN102322326B (en) | 2011-07-07 | 2011-07-07 | Novel muffler for excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110189723 CN102322326B (en) | 2011-07-07 | 2011-07-07 | Novel muffler for excavator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102322326A true CN102322326A (en) | 2012-01-18 |
| CN102322326B CN102322326B (en) | 2013-01-23 |
Family
ID=45450137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110189723 Active CN102322326B (en) | 2011-07-07 | 2011-07-07 | Novel muffler for excavator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102322326B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102606268A (en) * | 2012-04-12 | 2012-07-25 | 山东大学 | Reactive muffler for engineering machine |
| CN108291466A (en) * | 2015-11-05 | 2018-07-17 | Z·马乔瓦 | Combined exhaust air muffler |
| CN110359981A (en) * | 2019-07-19 | 2019-10-22 | 江苏徐工工程机械研究院有限公司 | Silencer and the internal-combustion engine vehicle and its noise elimination control method for using silencer |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6241044B1 (en) * | 1999-02-05 | 2001-06-05 | Komatsu Ltd. | Exhaust silencer and communicating pipe thereof |
| JP2001164921A (en) * | 1999-12-09 | 2001-06-19 | Komatsu Ltd | Exhaust muffling device |
| JP2002235522A (en) * | 2001-02-09 | 2002-08-23 | Komatsu Ltd | Muffler |
| CN201687551U (en) * | 2010-06-01 | 2010-12-29 | 安徽江淮汽车股份有限公司 | Heavy truck muffler |
| CN101984229A (en) * | 2010-11-17 | 2011-03-09 | 郑州精益达汽车零部件有限公司 | Vehicle inner layer heat-insulation resistance compound silencer |
| CN201818348U (en) * | 2010-07-30 | 2011-05-04 | 广西柳工机械股份有限公司 | Hydraulic muffler for excavator |
| CN202194705U (en) * | 2011-07-07 | 2012-04-18 | 力士德工程机械股份有限公司 | New type muffle for excavator |
-
2011
- 2011-07-07 CN CN 201110189723 patent/CN102322326B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6241044B1 (en) * | 1999-02-05 | 2001-06-05 | Komatsu Ltd. | Exhaust silencer and communicating pipe thereof |
| JP2001164921A (en) * | 1999-12-09 | 2001-06-19 | Komatsu Ltd | Exhaust muffling device |
| JP2002235522A (en) * | 2001-02-09 | 2002-08-23 | Komatsu Ltd | Muffler |
| CN201687551U (en) * | 2010-06-01 | 2010-12-29 | 安徽江淮汽车股份有限公司 | Heavy truck muffler |
| CN201818348U (en) * | 2010-07-30 | 2011-05-04 | 广西柳工机械股份有限公司 | Hydraulic muffler for excavator |
| CN101984229A (en) * | 2010-11-17 | 2011-03-09 | 郑州精益达汽车零部件有限公司 | Vehicle inner layer heat-insulation resistance compound silencer |
| CN202194705U (en) * | 2011-07-07 | 2012-04-18 | 力士德工程机械股份有限公司 | New type muffle for excavator |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102606268A (en) * | 2012-04-12 | 2012-07-25 | 山东大学 | Reactive muffler for engineering machine |
| CN108291466A (en) * | 2015-11-05 | 2018-07-17 | Z·马乔瓦 | Combined exhaust air muffler |
| CN110359981A (en) * | 2019-07-19 | 2019-10-22 | 江苏徐工工程机械研究院有限公司 | Silencer and the internal-combustion engine vehicle and its noise elimination control method for using silencer |
| CN110359981B (en) * | 2019-07-19 | 2023-08-01 | 江苏徐工工程机械研究院有限公司 | Muffler, internal combustion engine vehicle using the same, and method of controlling noise elimination thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102322326B (en) | 2013-01-23 |
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