CN2737956Y - Noise silencer for tractor and agricultural motor tricycle - Google Patents
Noise silencer for tractor and agricultural motor tricycle Download PDFInfo
- Publication number
- CN2737956Y CN2737956Y CN 200420092059 CN200420092059U CN2737956Y CN 2737956 Y CN2737956 Y CN 2737956Y CN 200420092059 CN200420092059 CN 200420092059 CN 200420092059 U CN200420092059 U CN 200420092059U CN 2737956 Y CN2737956 Y CN 2737956Y
- Authority
- CN
- China
- Prior art keywords
- noise
- engine exhaust
- tractor
- exhaust pipe
- cavity
- 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
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Abstract
The utility model relates to a noise silencer for tractor and agricultural motor tricycle for reducing the engine exhaust noise, comprising an engine exhaust pipe, and the exhaust pipe is provided with a micro perforating section. A shell body is arranged on the exhaust pipe corresponding to the micro perforating section, and the shell body forms the outer ring form cavity of the micro perforating section. A micro perforating barrel is arranged in the shell body, and the micro perforating barrel divides the cavity into an inner ring form cavity and an outer ring form cavity. The utility model utilizes the resonant cavity form noise silencing structure composed by the micro perforating plate, which can effectively reduce the noise generated by the engine exhaust. The utility model has the advantages of simple structure, low manufacturing cost and convenient configuration. As the noise silencer adopts the associated mode and the bore diameter being same with the opening of the engine exhaust pipe, the resistance of the engine exhaust is not increased, and the delivered horse power and oil consumption of the engine are not effected.
Description
Technical field
The utility model relates to a kind of tractor and agricultural motor tricycle silencing apparatus that is used to reduce engine exhaust noise.
Background technique
Farm tractor and agricultural motor tricycle are because cheap, and use remains the important tool that is used for operation and transportation at present flexibly.And the diesel engine that generally is used for tractor and agricultural motor tricycle can produce powerful noise at the outlet pipe place when work, cause the severe noise environmental pollution, and that also gives driver and operating personnel simultaneously healthyly brings serious harmful effect.The existing silencing apparatus that is used for tractor and agricultural motor tricycle adopts the mode that repeats to shrink and expand the outlet pipe cross section and repeatedly change airflow direction to reduce the exhaust noise of motor mostly.Because this kind mode of structure can make the exhaust resistance of motor increase, and influences the output power of motor, increase oil consumption, and it is good more noise reduction to occur, exhaust resistance is big more, output power loss and the high more problem of oil consumption.
Summary of the invention
The purpose of this utility model is at the problems referred to above, and a kind of tractor and agricultural motor tricycle silencing apparatus that can effectively reduce engine exhaust noise and not increase exhaust resistance is provided.
The technological scheme that realizes above-mentioned purpose is: a kind of tractor and agricultural motor tricycle silencing apparatus, include engine exhaust pipe, outlet pipe is provided with the micropunch section, the corresponding housing that constitutes micropunch section exterior annular cavity that is provided with on outlet pipe with the micropunch section.
The technical solution of the utility model also comprises: being provided with partitioned cavity in described housing is the micropunch tube of inside and outside two toroidal cavities.
The utility model utilizes microperforated panel to form resonance cavate noise elimination structure, and fundamental frequency noise and various higher harmonics noise in the pulsed high-frequency noise that motor produces are cancelled out each other in its resonant cavity, and finally is eliminated with the form of heat energy.Its silencing apparatus can be arranged to the board-like noise elimination structure of individual layer micropunch according to designing requirement, the board-like noise elimination structure of perhaps double-deck micropunch.Because silencing apparatus adopts internal diameter and associated mode identical with the engine exhaust pipe bore, can not increase the exhaust resistance of motor, therefore do not influence the output power and the oil consumption of motor.The utility model is compared with existing tractor and agricultural motor tricycle silencing apparatus, also has simple in structurely, and cost of production is low, dispose characteristics easily.
Description of drawings
Fig. 1 is the board-like acoustic wave filter structure schematic representation of individual layer micropunch;
Fig. 2 is the board-like acoustic wave filter structure schematic representation of double-deck micropunch.
Embodiment
In conjunction with the accompanying drawings embodiment of the present utility model is described.
Provide as accompanying drawing 1, this tractor and agricultural motor tricycle silencing apparatus include engine exhaust pipe 1, and micropunch section 2 is set on outlet pipe 1, with the micropunch section 2 corresponding housings 3 that constitute micropunch section exterior annular resonant cavity that are provided with on outlet pipe 1.Said structure constitutes the board-like acoustic wave filter structure of individual layer micropunch.
What accompanying drawing 2 provided is the board-like acoustic wave filter structure of double-deck micropunch, and it is on the basis of the board-like acoustic wave filter structure of individual layer micropunch, increases by a micropunch tube 4 in housing 3, forms the resonant cavity of inside and outside two annulars and constitutes.
Accompanying drawing embodiment's suppressor case is a cylindrical housings, when specifically implementing, the two ends of housing can be arranged to the cylndrical surface smooth transition join spherical, help improving the noise elimination effect.Its suppressor case also can adopt the cylindroid shape.To adapt to the spatial requirement of mounting point.
0.5-1mm can be selected in the aperture of the employed microperforated panel of this silencing apparatus, and the punching rate of internal layer microperforated panel is 2-3%, and the punching rate of outer microtube perforated plate is 1-2%, and the degree of depth of resonant cavity is selected 50-200mm according to designing requirement.
The utility model is suitable for the exhausting silencer of spitkit motor and similar diesel engine equally.
Claims (2)
1, a kind of tractor and agricultural motor tricycle silencing apparatus, include engine exhaust pipe (1), it is characterized in that: outlet pipe (1) is provided with micropunch section (2), the corresponding housing (3) that constitutes micropunch section (2) exterior annular cavity that is provided with on outlet pipe (1) with micropunch section (2).
2, tractor according to claim 1 and agricultural motor tricycle silencing apparatus is characterized in that: being provided with partitioned cavity in housing (3) is the micropunch tube (4) of inside and outside two toroidal cavities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420092059 CN2737956Y (en) | 2004-11-08 | 2004-11-08 | Noise silencer for tractor and agricultural motor tricycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420092059 CN2737956Y (en) | 2004-11-08 | 2004-11-08 | Noise silencer for tractor and agricultural motor tricycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2737956Y true CN2737956Y (en) | 2005-11-02 |
Family
ID=35347866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420092059 Expired - Lifetime CN2737956Y (en) | 2004-11-08 | 2004-11-08 | Noise silencer for tractor and agricultural motor tricycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2737956Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670602A (en) * | 2013-11-28 | 2014-03-26 | 武汉理工大学 | Three-layer series micro-perforated pipe muffler |
| CN103671071A (en) * | 2013-11-28 | 2014-03-26 | 武汉理工大学 | Double-layer series silencer with miniature perforated pipes |
| CN108278140A (en) * | 2018-03-23 | 2018-07-13 | 榆林学院 | A kind of oil/gas drilling Diesel Engine Exhaust Pipe and production method with noise elimination function |
-
2004
- 2004-11-08 CN CN 200420092059 patent/CN2737956Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670602A (en) * | 2013-11-28 | 2014-03-26 | 武汉理工大学 | Three-layer series micro-perforated pipe muffler |
| CN103671071A (en) * | 2013-11-28 | 2014-03-26 | 武汉理工大学 | Double-layer series silencer with miniature perforated pipes |
| CN108278140A (en) * | 2018-03-23 | 2018-07-13 | 榆林学院 | A kind of oil/gas drilling Diesel Engine Exhaust Pipe and production method with noise elimination function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20141108 Granted publication date: 20051102 |