CN204511618U - Vertical silencer list fulcrum fagging flange - Google Patents
Vertical silencer list fulcrum fagging flange Download PDFInfo
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- CN204511618U CN204511618U CN201420657504.6U CN201420657504U CN204511618U CN 204511618 U CN204511618 U CN 204511618U CN 201420657504 U CN201420657504 U CN 201420657504U CN 204511618 U CN204511618 U CN 204511618U
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- fagging
- flange
- silencer
- silencing apparatus
- vertical
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Abstract
Structure is simple, it is reliable, easy for installation to connect, and is applicable to the single-cantilever vertical silencer list fulcrum fagging flange that oblique installing type single cylinder small-power gasoline engine noise suppressor is equipped.There is an angular structure in its flange fagging and silencer air inlet pipe, is fitted in clamp strong cohesiveness structure silencing apparatus being formed a triangle.Add the vibration concertedness of petrol engine oscillating body and muffler vibration body, when petrol engine runs, reduce and constraint secondary vibration each other, and the damaging impact moment of torsion produced under controlling the effect of the factor such as impact air-flow, seismic inertia, to make the structural stability of silencing apparatus component and installation connecting element with reliable, improve impact resistance and the high temperature resistance Under Thermal Fatigue Damage ability of structural member, simultaneously, a heat-dissipating space can be separated out between suppressor case and petrol engine casing, be convenient to the laying of heat insulation cooling duct.
Description
Technical field
The utility model relates to the connection set of petrol engine exhausting silencer system, provides the single-cantilever vertical silencer list fulcrum fagging flange that a kind of applicable oblique installing type single cylinder small-power gasoline engine noise suppressor is installed.Feature be structure simple, connect reliable, easy for installation.
Background technique
Oblique installing type single cylinder small-power petrol engine is a kind of broad-spectrum power plant, owing to mostly needing open field and movably using job requirements, equipment miniaturization is a product philosophy generally admitted, and the silencing apparatus that petrol engine is equipped with also requires higher compactedness and reliability.For commensurate structure compactedness and reliability complement, usually can by silencing apparatus install near petrol engine casing or increase silencing apparatus installation connect fulcrum or simplify reduce muffler volume.But, along with more and more high noise emission noise reduction requires and structural compactness, reliability complement, silencing apparatus existence narrow limitation is to a certain degree connected with usual manner, for example, silencing apparatus is too near petrol engine casing, petrol engine heat radiation certainly will be affected, and then have influence on power performance and working life; Installation as increased silencing apparatus connects fulcrum, may be confined to structural compactness, also may be not enough because of the flexible lengths of fulcrum link, causes it too tired and damages; And the muffler volume that reduces simplified not only loses noise reduction capability, and silencing apparatus will undertake more powerful stroke exhaust pulses, and connection reliability also may reduce.Based on this, the utility model provides a kind of link being suitable for installed vertical silencing apparatus, relatively simple for structure, relatively reliable.
Model utility content
The utility model solves above-mentioned technical problem by following technical proposals:
A kind of vertical silencer list fulcrum fagging flange, its feature is, described vertical silencer list fulcrum fagging flange comprises: a suction tude for the fagging and a silencing apparatus that connect suppressor case stacking raised flanges, wherein, one end of suction tude is crossed fagging borehole jack and is connected on flange inlet hole, and described vertical silencer list fulcrum fagging flange also comprises suppressor case.
Preferably, the structure characteristic of its first aspect is: parallelly from the mounting flange back side of silencer air inlet pipe stack extension one piece of silencing apparatus fagging, form one piece of overall silencing apparatus fagging flange, fagging flange can adopt overall stamping part, also can adopt fagging and parallel flange stitch welding structure integrally, but all must ensure the parallel projection of flange attachment face.
Preferably, the structure characteristic of its second aspect is: flange fagging and silencer air inlet pipe exist an angular structure, and the position that fagging overlapped suction tude is consistent with flange size; The width at fagging support point position on suppressor case---tubular silencing apparatus is not less than to 1.5 times of air inlet caliber, boxlike silencing apparatus is not less than to 0.9 times of flange overall width.
Preferably, described suction tude, described flange fagging and described silencing apparatus form an angular structure.
Preferably, the structure characteristic of its third aspect is: the flange fagging that angular structure combines and suction tude cramp joint suppressor case, and the degree of depth that suction tude stretches into silencing apparatus shell chamber is 1.5 times of air inlet caliber; The support point of fagging on suppressor case is 1/2 of vertical silencer body height to the vertical distance of silencer air inlet pipe end face.
It is such that organization plan of the present utility model disposes mechanism, and petrol engine can be understood as an independently rigidity vibration unit, and the petrol engine stroke combustion pulse occurred in various degree vibrates and secondary mechanical vibration are that its performance characteristic determined.The exhaust silencer be fitted on petrol engine is another rigidity vibration unit, the vibration of petrol engine can drive the vibration of muffler vibration unit, and petrol engine vibration unit and muffler vibration unit have different vibration modulus and individual attribute, cause amplitude, shake frequently, shaking can be also different, the link fixed a silencer needs a stable structure and clears up vibration stress, and ensures the stable of muffler installation structure.One is adopt flexible pipe to connect, transition and dissolve interactional flutter failure stress between two vibration units; Two is adopt suitable being rigidly connected, and constraint muffler vibration unit, in company with the vibration of petrol engine vibration unit, reduces the reaction force opposing that muffler vibration vibrates petrol engine.And adopt when being rigidly connected, there is again the rigid connection structure scheme that two concrete, first mode is the remote laying of silencing apparatus relative to petrol engine, utilize long connector element to there is certain weak flexibility, and the pliability transition of silencing apparatus plate member, dissolve flutter failure stress, and in the appropriate location of silencing apparatus far-end, additionally arrange and relatively have flexible fulcrum, constraint muffler body swings, and ensures the reliability of linkage structure, but this mode needs enough cleared space layings; Second mode is the closely laying of the relative petrol engine of silencing apparatus, by strong rigid connection, that directly petrol engine vibration unit and muffler vibration unit are combined into vibration general character, single rigidity oscillating body, ensure linkage structure reliability, and take up room with the laying of fewer silencing apparatus, meet structural compactness requirement, but the root problem that this linkage structure needs are considered is: silencing apparatus is to the heat transfer of petrol engine casing and thermal radiation.Cross the nearly structural reliability connected good, but heat affecting degree is high, gradually the heat affecting degree connected far away is low, but the reliability effect being rigidly connected by force embodied is not remarkable.How at minimizing silencing apparatus under the heat transfer of petrol engine casing and thermal-radiating prerequisite, reach strong rigidly connected reliability effect, a solution that the utility model shows that Here it is.
Accompanying drawing explanation
Fig. 1 is that the power of vertical silencer list fulcrum fagging flange of the present utility model is to analysis schematic diagram.
Fig. 2 is the group component decomposition view of vertical silencer list fulcrum fagging flange of the present utility model.
Fig. 3 is the installation application schematic diagram on the vertical barrel type silencing apparatus of vertical silencer list fulcrum fagging flange of the present utility model.
Fig. 4 is the installation application schematic diagram on the vertical boxlike silencing apparatus of vertical silencer list fulcrum fagging flange of the present utility model.
Embodiment
Lift preferred embodiment below, and come by reference to the accompanying drawings clearlyer intactly the utility model to be described.
In fact, silencing apparatus and link, except resisting flutter failure stress, also affect by two key factors: one is, the flash gas shock power during exhaust of petrol engine stroke; Two are, the component strength under exhaust high temperature impact reduces and component thermal fatigue.Meanwhile, flash gas shock also promotes the secondary natural disposition vibration of silencing apparatus further.Flash gas shock power is with discharge directions forehand silencing apparatus, and thermal fatigue has mass action to silencing apparatus and link.Low coverage is laid to the small power single cylinder gasoline engine of silencing apparatus, the side effect that flash gas shock gentle height temperature is brought is particularly evident.Below by way of the elaboration of feature structure, disclose solution of the present utility model and feature.
The structure characteristic of the utility model first aspect is: parallelly from the mounting flange back side of silencer air inlet pipe 2 stack extension one piece of silencing apparatus fagging, forms one piece of overall silencing apparatus fagging flange (flange fagging 4).Fagging flange can adopt overall stamping part, also can adopt fagging and parallel flange stitch welding structure integrally, or other method realizes, but all must ensure the parallel projection of flange attachment face.
The structure characteristic of the utility model second aspect is: flange fagging and silencer air inlet pipe exist an angular structure, and the position that fagging overlapped suction tude is consistent with flange size; The width at fagging support point position on suppressor case---tubular silencing apparatus is not less than to 1.5 times of air inlet caliber, boxlike silencing apparatus is not less than to 0.9 times of flange overall width.
The structure characteristic of the utility model third aspect is: the flange fagging that angular structure combines and suction tude cramp joint suppressor case.The minimum-depth that suction tude stretches into silencing apparatus shell chamber is about about 1.5 times of air inlet caliber; The support point of fagging on suppressor case is about about 1/2 of vertical silencer body height to the vertical distance of silencer air inlet pipe end face.If desired can in cramp joint place compound plate reinforcement.
By above three aspect structure characteristics, in conjunction with the Impact direction (Fig. 1) of flange fulcrum, to the structural feature of described single fulcrum fagging Flange joint, and stability and reliability analysis as follows:
1, silencing apparatus is the mode connected by tools for bolts ' pretension, is arranged on the cylinder head of petrol engine, pretightening force F
1, F
2act on muffler flange, silencing apparatus also exist body from gravity W.When petrol engine runs, 1., the flash gas shock power Fq of exhaust generation is from the internal action of shell chamber in silencing apparatus; 2., the reaction force Fs of gas discharging acts on silencing apparatus relief opening; 3., the vibrating inertia force Ft that vibration produces acts on muffler body.Under the acting in conjunction of power, the dynamic impulsion moment of torsion M of generation
1act on each connection part of silencing apparatus and be connected fulcrum, moment of torsion M
1be objective reality, and there is suitable destruction. the structural strength suitable with fatigue resistance must be had to resist or attract to dissolve moment of torsion M
1destruction. effect, the structure stability of guarantee silencing apparatus and link and reliability, meanwhile, connecting bolt and pretightening force F
1, F
2also enough structural redundancies must be had to bear moment of torsion M
1long-term impact under impact.
Suppose do not have flange fagging to prop up C point at suppressor case, impact moment of torsion M
1by all acting on suction tude root A point, do not have fulcrum to retrain, the amplitude of oscillation of muffler body increases in addition, like this, and moment of torsion M
1the lower high-frequency percussion vibration of impact not only easily make root too fatigue cause fracture, also flange junction plane may be made to compel to hit effect because high-frequency percussion vibration can not be resisted, easily loosening pretension bolt, obviously, the stability of structure and reliability Shortcomings.Suppose again, be not the flange fagging by one, but be connected in silencing apparatus from other component is complementary, adopt the link of relative flexibility, the amplitude of oscillation that can limit muffler body increases, but impact moment of torsion M
1suction tude root A point will be acted in portion greatly; Adopt the link of relative rigidity, the vibration of link and petrol engine or muffler vibration body is poor with the same sex, effect of vibration power between oscillating body and reaction force also easily cause link too tired and rupture, unless there are enough mounting structure spaces, this is the silencing apparatus mounting type generally adopted at present, but be not suitable for, under little structure space, high noise-reducing silencer is installed, obviously, this appropriate linkage structure that neither adopt under little spatial condition.
When after employing flange fagging, 1., fagging is consistent in company with the vibration of petrol engine oscillating body, it is good with the same sex to vibrate, tie point B and C is equivalent to cramp joint point and vises suppressor case, adds the vibration consubstantiality of petrol engine oscillating body and muffler vibration body, because vibrating not companion between oscillating body, secondary vibration under action and reaction impact greatly reduces, and even disappears; 2., support contact (C point) changes this Placement of single-cantilever list fulcrum, is converted into branched some cramp joint suppressor case, damaging impact moment of torsion M
1the arm of force shorten, moment of torsion M
1also reduce many, the impact strength that muffler flange tie point A place bears reduces thereupon; 3., fagging is the extension of flange junction plane, has reasonable installation stability, and what fagging, suction tude and housing were formed is a triangle strong type structure, can well ensure and keep the vibration consubstantiality of petrol engine oscillating body and muffler vibration body, alleviate the broken ring effect of vibration to structure; 4., the amplitude of oscillation that support contact (C point) could well retrain and limit suppressor case bottom increases, and reduce vibrating inertia force Ft, and joint is reliable and stable.
2, the vibration consubstantiality of petrol engine oscillating body and muffler vibration body increases, and the reduction of damaging impact moment of torsion M1, to alleviate under vibratory impulse between silencing apparatus mounting flange junction plane urgent hits effect, with the broken Zernike annular polynomial to link, link and connect relative well-to-do of pre-fastening structure redundancy, installs the structure stability of connection part, reliability, durability increases.
3, due to fagging, suction tude and housing formation is a triangle strong type structure, under the effect of high-temperature exhaust air stream, the thermal stress that suction tude and other joint produce is by the structural constraint of triangle strong type, thermal strain is relatively stable, secondary side effect power impact is little, and component thermal fatigue resistance energy of rupture greatly increases, the high temperature resistant property also corresponding increase of mounting connection structure.
4, in certain control range, the three-legged structure size that adjustment fagging, suction tude and housing are formed, obviously can not have influence on the structural behaviour of single fulcrum fagging Flange joint, and adjustment can will be separated out a heat-dissipating space eaily between suppressor case and petrol engine casing 10, be convenient to the laying of heat insulation cooling duct 11.
5, adopt the vertical silencer of single fulcrum fagging flange to take up room little, connect without auxiliary fulcrum, dismounting is relatively convenient.
From upper analysis, single-cantilever vertical silencer list fulcrum fagging flange described in the utility model and linkage structure thereof, embody in stability, reliability, durability, applicability etc. and have obvious advantage, and structure simple, take up room little, be convenient to cooling duct layings, easy accessibility, practical, link and structure comparison are laid under being applicable to minor structure spatial condition and are equipped with silencing apparatus.
Need ben: show with experimental analysis by experiment, described single fulcrum fagging flange and linkage structure thereof, horizontal plane is in, the applicability also had when monomer silencing apparatus is arranged on substantially horizontal and installation effect in the mounting flange face of petrol engine relief opening; When the mounting flange face of petrol engine relief opening is inclined-plane, can more convenient extension and adjustment flange fagging, applicability is best; When the mounting flange face of petrol engine relief opening is vertical frontal plane, be confined to cooling duct and lay, applicability is limited.
With reference to the accompanying drawing of application example, by above-mentioned analysis, intention of the present utility model and structural advantages can be understood more in detail, not repeatedly repeat at this.Example is only a citing, is not the constraint to the utility model embodiment, in this specification appending claims, has declared structure characteristic and the opinion of the utility model ownership.
Claims (5)
1. a vertical silencer list fulcrum fagging flange, it is characterized in that, described vertical silencer list fulcrum fagging flange comprises: a suction tude for the fagging and a silencing apparatus that connect suppressor case stacking raised flanges, wherein, one end of suction tude is crossed fagging borehole jack and is connected on flange inlet hole, and described vertical silencer list fulcrum fagging flange also comprises suppressor case.
2. vertical silencer list fulcrum fagging flange according to claim 1, it is characterized in that, the structure characteristic of its first aspect is: parallelly from the mounting flange back side of silencer air inlet pipe stack extension one piece of silencing apparatus fagging, form one piece of overall silencing apparatus fagging flange, fagging flange can adopt overall stamping part, also can adopt fagging and parallel flange stitch welding structure integrally, but all must ensure the parallel projection of flange attachment face.
3. vertical silencer list fulcrum fagging flange according to claim 1, it is characterized in that, the structure characteristic of its second aspect is: flange fagging and silencer air inlet pipe exist an angular structure, and the position that fagging overlapped suction tude is consistent with flange size; The width at fagging support point position on suppressor case---tubular silencing apparatus is not less than to 1.5 times of air inlet caliber, boxlike silencing apparatus is not less than to 0.9 times of flange overall width.
4. vertical silencer list fulcrum fagging flange as claimed in claim 2, it is characterized in that, described suction tude, described flange fagging and described silencing apparatus form an angular structure.
5. vertical silencer list fulcrum fagging flange according to claim 1, it is characterized in that, the structure characteristic of its third aspect is: the flange fagging that angular structure combines and suction tude cramp joint suppressor case, and the degree of depth that suction tude stretches into silencing apparatus shell chamber is 1.5 times of air inlet caliber; The support point of fagging on suppressor case is 1/2 of vertical silencer body height to the vertical distance of silencer air inlet pipe end face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420657504.6U CN204511618U (en) | 2014-11-05 | 2014-11-05 | Vertical silencer list fulcrum fagging flange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420657504.6U CN204511618U (en) | 2014-11-05 | 2014-11-05 | Vertical silencer list fulcrum fagging flange |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204511618U true CN204511618U (en) | 2015-07-29 |
Family
ID=53709607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420657504.6U Expired - Fee Related CN204511618U (en) | 2014-11-05 | 2014-11-05 | Vertical silencer list fulcrum fagging flange |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204511618U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109854348A (en) * | 2017-11-30 | 2019-06-07 | 宝沃汽车（中国）有限公司 | Muffler ASSY, exhaust system and vehicle |
| CN110397489A (en) * | 2018-04-24 | 2019-11-01 | 宝沃汽车（中国）有限公司 | Muffler ASSY, exhaust system and vehicle |
-
2014
- 2014-11-05 CN CN201420657504.6U patent/CN204511618U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109854348A (en) * | 2017-11-30 | 2019-06-07 | 宝沃汽车（中国）有限公司 | Muffler ASSY, exhaust system and vehicle |
| CN110397489A (en) * | 2018-04-24 | 2019-11-01 | 宝沃汽车（中国）有限公司 | Muffler ASSY, exhaust system and vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150729 Termination date: 20151105 |
|
| EXPY | Termination of patent right or utility model |