CN206394429U - A kind of lifting lug of exhaust system - Google Patents
A kind of lifting lug of exhaust system Download PDFInfo
- Publication number
- CN206394429U CN206394429U CN201621225202.7U CN201621225202U CN206394429U CN 206394429 U CN206394429 U CN 206394429U CN 201621225202 U CN201621225202 U CN 201621225202U CN 206394429 U CN206394429 U CN 206394429U
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- face
- block assembly
- hanger body
- quality
- exhaust system
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- 239000002184 metal Substances 0.000 claims description 8
- 238000000605 extraction Methods 0.000 abstract description 20
- 238000010276 construction Methods 0.000 abstract description 2
- 238000013016 damping Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 5
- 230000005284 excitation Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- 239000006096 absorbing agent Substances 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000002929 anti-fatigue Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000012913 prioritisation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000003584 silencer Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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- Vibration Prevention Devices (AREA)
Abstract
The utility model discloses a kind of lifting lug of exhaust system, including hanger body, the hanger body includes the first end face and second end face positioned at the hanger body opposite end, the first end face and the parallel setting of the second end face, the hanger also includes that the quality block assembly of quality can be adjusted, the quality block assembly is separately positioned in the first end face and the second end face, and the quality block assembly in the first end face and the second end face is identical in quality.The lifting lug of exhaust system is simple in construction, by installing the adjustable quality block assembly of quality additional on hanger, make hanger that there is the function of vibration bump leveller, by the driving frequency for selecting suitable quality block assembly that whole gas extraction system can be made to be effectively shielded from engine, but also reasonably save the space on chassis.
Description
Technical field
The utility model is specifically related to technical field of automobile accessories, and in particular to a kind of lifting lug of exhaust system.
Background technology
Automobile exhaust system is that progress purifying vehicle exhaust, reduction exhaust noise, the discharge of satisfaction country and legislations for noise must
Indispensable automobile environment-protection system, and the vibration for being directly delivered to in-car by gas extraction system is also influence passenger inside the vehicle's comfort level
One of key factor.Gas extraction system one end is connected with engine, and the other end is then connected by hook with car body, and engine shakes
Dynamic transmission exhaust system, is then transmitted to vehicle body, the vibration of vehicle body is directly passed by vehicle body, steering wheel and floor by hook again
To passenger, while the vibration of vehicle body can also go out during spoke, noise is produced in the car.The vibration source being delivered in passenger compartment mainly divides
For two kinds, when the first vibration source is the vibration that engine work is produced, especially emergency brake of vehicle or promptly accelerated, vibration
Particularly acutely, engine mounting can cut down this vibration, and the flexible joint in gas extraction system is to interrupt engine luggine to pass through row
Tracheae is delivered to the main vibration absorber of in-car.Second of vibration source is the vibration that road excitation is delivered to vehicle body, is mainly passed through
The damping vibration attenuation of shock absorber carries out vibration damping, and the vibration that blast pipe is produced by road excitation then needs the hanger of gas extraction system to enter
Row reduction.
When each to gas extraction system, steering, suspension system etc. subsystem carries out NVH tests, generally with installing vibration suction additional
The method of device of shaking could solve its resonance problem.But the vibration bump leveller needs being applicable for different subsystems are different
Parts manufacturer provides, and NVH engineer is from the prioritization scheme of design is proposed to main engine plants' feedback problem, then to by main engine plants
It is responsible for contact supplier and special vibration bump leveller is provided, its process is cumbersome, and time-consuming.Also, vibrating bump leveller also has only
The characteristics of for a certain resonant frequency vibration damping, once design upper and physical presence deviation（Because some physical conditions of design process
It can not take into account）, it is impossible to adjustment can substantially reduce the operating efficiency of NVH engineer with improving in time.
In addition, traditional automobile vibration bump leveller design method, which is the means based on test and emulation, obtains automobile subsystem
The modal frequency and the vibration shape of system, design vibrate bump leveller with resonant frequency identical, avoid the vibration of this frequency.But, test
Emulate obtain data may and physical presence deviation, but also exist damping influence, this be accomplished by by design one examination survey
One test tries a series of flows such as survey again and again, and the flow being directed not only to is a lot, and expends substantial amounts of manpower financial capacity.Also simultaneously
It is related to the communication and coordination between vehicle factory, components supplying business, dynamic vibration absorber supplier, increases delay item nodes
Feasibility.
If designing a kind of vibration bump leveller of variable mass, by the result of simulation analysis voluntarily carry out Mass adjust- ment come
The vibration frequency of adjustment gas extraction system, the driving frequency scope for making it avoid engine, this will substantially increase gas extraction system NVH
The efficiency of optimization.But some gas extraction system arrange excessively compact due to chassis, the position to arrangement hook brings very big
Difficulty, it is impossible to the position of adjustment hook or the purpose that Engine Excitation frequency can not be avoided by adjusting the realization of hook position.
Utility model content
Technical problem to be solved in the utility model is that have to vibrate absorbing there is provided one kind for problem of the prior art
Device function and the lifting lug of exhaust system that can voluntarily adjust frequency.
To reach above-mentioned purpose, the technical solution adopted in the utility model is：
A kind of lifting lug of exhaust system, including hanger body, the hanger body include being located at the hanger body with respect to two
The first end face and second end face at end, the first end face and the parallel setting of the second end face, the hanger also include energy
The quality block assembly of quality is enough adjusted, the quality block assembly is separately positioned in the first end face and the second end face,
And the quality block assembly in the first end face and the second end face is identical in quality.
Preferably, the quality block assembly is symmetricly set in the first end face and the second end face.
Preferably, the quality block assembly includes mass, is respectively provided with the first end face and the second end face
There is at least one described mass.
Preferably, the quality block assembly includes mass, and the mass has at least one specification of quality.
Preferably, the hanger body is provided with the mounting hole for mounting hook, and the mounting hole runs through described first
End face and the second end face, and the mounting hole central axis upright in the first end face and the second end face, institute
Stating mounting hole has two, and two mounting holes are disposed on the opposite sides of the hanger body, the quality block assembly
It is centrally located at the middle part of two mounting hole lines of centres.
Further, the hanger body is in cylindrical structural, and two mounting holes are located at the hanger body respectively
Diametric(al) on both ends, the quality block assembly is centrally located at the cylindrical home position.
Further, it is additionally provided with the centerline axis parallel of central axis and the mounting hole on the hanger body and is located at
The through hole at the middle part of two mounting hole lines of centres, the through hole runs through the first end face and the second end face, institute
State the nut that quality block assembly is coordinated including mass, the screw rod being located in the through hole, with the screw rod by screw thread, institute
The first end face and the second end face are stretched out in the both ends for stating screw rod respectively, and the mass is set on the screw rod,
The mass is pressed in the first end face and the second end face respectively by the cooperation of nut and the screw rod.
Preferably, the hanger body is also coated on the sheet metal on the lateral surface of the hanger body.
Further, the hanger body is in cylindrical structural, and the sheet metal is coated on the whole hanger body
Outer circumference surface on.
Due to the utilization of above-mentioned technical proposal, the utility model has following advantages compared with prior art：This practicality is new
The lifting lug of exhaust system of type is simple in construction, by installing the adjustable quality block assembly of quality additional on hanger, hanger is had vibration
The function of bump leveller, passes through the excitation frequency for selecting suitable quality block assembly that whole gas extraction system can be made to be effectively shielded from engine
Rate, but also reasonably save the space on chassis.
Brief description of the drawings
Accompanying drawing 1 is the stereogram of lifting lug of exhaust system of the present utility model；
Accompanying drawing 2 is the front view of lifting lug of exhaust system of the present utility model；
Accompanying drawing 3 is the structural representation of gas extraction system of the present utility model.
Wherein：1st, hanger body；11st, first end face；12nd, second end face；13rd, lateral surface；14th, mounting hole；2nd, mass
Component；21st, mass；22nd, screw rod；23rd, nut；3rd, sheet metal；
101st, downtake pipe；102nd, Cui's graduated scale；103rd, second exhaust pipe；104th, premuffler；105th, the 3rd exhaust
Pipe；106th, rear muffler；107th, tailpipe.
Embodiment
The technical solution of the utility model is further elaborated with specific embodiment below in conjunction with the accompanying drawings.
Referring to the lifting lug of exhaust system shown in Fig. 1 and Fig. 2, including hanger body 1 and the quality being arranged on hanger body 1
Block assembly 2.
Hanger body 1 includes the first end face 11 and second end face 12 of the opposite end positioned at hanger body 1, positioned at first
Lateral surface 13 between end face 11 and second end face 12, first end face 11 and the parallel setting of second end face 12.In the present embodiment,
Hanger body 1 is in cylindrical structural, and first end face 11 and second end face 12 are respectively two end faces of cylinder, and lateral surface 13 is circle
The outer circumference surface of post.
The quality of quality block assembly 2 can be adjusted, and quality block assembly 2 is separately positioned on first end face 11 and second end face 12
On, the quality block assembly 2 in first end face 11 and the quality block assembly 2 in second end face 12 it is identical in quality, it is excellent
Bit selecting is symmetrical arranged in the quality block assembly 2 in first end face 11 and the quality block assembly 2 in second end face 12.
The mounting hole 14 for mounting hook is provided with hanger body 1, mounting hole 14 runs through first end face 11 and second
End face 12, and mounting hole 14 central axis upright in first end face 11 and second end face 12, mounting hole 14 has two, two peaces
Dress hole 14 is disposed on the opposite sides of hanger body 1, and quality block assembly 2 is centrally located at two lines of centres of mounting hole 14
Middle part.In the present embodiment, the both ends of two mounting holes 14 respectively in the diametric(al) of hanger body 1, mass group
Part 2 is centrally located at the home position of hanger body 1.
Specifically, quality block assembly 2 includes mass 21, for mass 21 to be fixed on into screw rod 22 on hanger body 1
With nut 23, through hole is additionally provided with hanger body 1, through hole matches with screw rod 22, central axis and the mounting hole 14 of through hole
Centerline axis parallel and the line of centres positioned at two mounting holes 14 middle part, through hole runs through first end face 11 and second end face
12, screw rod 22 is worn in through-holes, and first end face 11 and second end face 12,21 sets of mass are stretched out in the both ends of screw rod 22 respectively
It is located on screw rod 22, is coordinated by the screw thread of nut 23 and screw rod 22 and mass 21 is pressed on first end face 11 and second respectively
On end face 12.
Preferably, at least one mass 21 is equipped with first end face 11 and second end face 12.
Preferably, the mass 21 in first end face 11 and second end face 12 at least has a kind of specification of quality.
In this manner it is possible to number or quality by adjusting mass 21, so as to adjust whole quality block assembly 2
Quality, so that hanger has different frequencies.
The material of hanger body 1 is rubber, to prevent hanger rubber excessive tensile in use, in hanger body 1
Lateral surface 13 be provided with sheet metal 3, it is optimal that sheet metal 3 covers whole lateral surface 13.By the setting of sheet metal 3,
The service life of hanger can be improved.
Hanger of the present utility model is applied in the gas extraction system of automobile, and the gas extraction system of general automobile includes suitable successively
Sequence connection downtake pipe 101, Cui's graduated scale 102, second exhaust pipe 103, premuffler 104, the 3rd blast pipe 105, after
Silencer 106, tailpipe 107, as shown in figure 3, hanger is equipped with a, b, c, d1, d2 position as shown in Figure 3, so as to
It is connected in by gas extraction system with car body.
The specific matching process for improving gas extraction system NVH performances is as follows：
（1）Quality block assembly 2 on hanger at a, b, c, d1, d2 position is removed；
（2）Calculate Constrained mode of the gas extraction system on hanger during non-installation quality block assembly 2；
（3）Result of calculation is analyzed, finds out the position that the vibration in Engine Excitation frequency range occurs：
The driving frequency scope of general engine is 25 ~ 30Hz, by modal calculation, and gas extraction system is equal on each hanger
There is 26.47Hz second order buckling during non-installation quality block assembly 2, and the vibration occurs in the end of second exhaust pipe
At the 3rd blast pipe position.
（4）At the end of second exhaust pipe and the 3rd blast pipe position, i.e. installed on hanger in Fig. 3 at b, c position
Quality block assembly 2, and the quality of quality block assembly 2 is adjusted, the Constrained mode of gas extraction system is then recalculated, from result of calculation
From the point of view of, mode is not present in the gas extraction system in the range of 25 ~ 30Hz, only there is 33.92Hz local mode at b positions.
To sum up, hanger of the present utility model makes hanger by installing quality block assembly additional on the hanger body of prior art
A vibration bump leveller is combined between body and quality block assembly, it is whole by selecting the quality of suitable quality block assembly to make
Individual gas extraction system is effectively shielded from the driving frequency of engine, but also reasonably saves the space on chassis.Meanwhile, this practicality
Rationally, damping performance, antifatigue destructive and processing technology are all preferable, and manufacturing cost is relatively low for new shackle structure,
Occupied little space in assembling, versatility is good.
Above-described embodiment is only to illustrate technical concepts and features of the present utility model, and its object is to allow be familiar with technique
Personage can understand content of the present utility model and implement according to this, protection domain of the present utility model can not be limited with this.
All equivalent change or modifications made according to the utility model Spirit Essence, should all cover protection domain of the present utility model it
It is interior.
Claims (9)
1. a kind of lifting lug of exhaust system, including hanger body, the hanger body include being located at the hanger body opposite end
First end face and second end face, the first end face and the second end face it is parallel set, it is characterised in that：The hanger
Also include that the quality block assembly of quality can be adjusted, the quality block assembly is separately positioned on the first end face and described second
On end face, and the quality block assembly in the first end face and the second end face is identical in quality.
2. lifting lug of exhaust system according to claim 1, it is characterised in that：The quality block assembly is symmetricly set on described
In first end face and the second end face.
3. lifting lug of exhaust system according to claim 1, it is characterised in that：The quality block assembly includes mass,
At least one described mass is provided with the first end face and the second end face.
4. lifting lug of exhaust system according to claim 1, it is characterised in that：The quality block assembly includes mass, institute
Stating mass has at least one specification of quality.
5. lifting lug of exhaust system according to claim 1, it is characterised in that：The hanger body is provided with to be used to install and hung
The mounting hole of hook, the mounting hole runs through the first end face and the second end face, and the central axis of the mounting hole hangs down
Directly in the first end face and the second end face, the mounting hole has two, and two mounting holes are disposed on described
The opposite sides of hanger body, the quality block assembly is centrally located at the middle part of two mounting hole lines of centres.
6. lifting lug of exhaust system according to claim 5, it is characterised in that：The hanger body is in cylindrical structural, two
The both ends of the individual mounting hole respectively in the diametric(al) of the hanger body, the quality block assembly is centrally located at
At the cylindrical home position.
7. lifting lug of exhaust system according to claim 5, it is characterised in that：Central axis is additionally provided with the hanger body
With the centerline axis parallel of the mounting hole and positioned at the through hole at the middle part of two mounting hole lines of centres, the through hole is passed through
Wear the first end face and the second end face, the quality block assembly include mass, the screw rod being located in the through hole,
The first end face and second end are stretched out in the nut coordinated with the screw rod by screw thread, the both ends of the screw rod respectively
Face, the mass is set on the screw rod, is pressed on the mass respectively by the cooperation of nut and the screw rod
In the first end face and the second end face.
8. lifting lug of exhaust system according to claim 1, it is characterised in that：The hanger body is also coated on described
Sheet metal on the lateral surface of hanger body.
9. lifting lug of exhaust system according to claim 8, it is characterised in that：The hanger body is in cylindrical structural, institute
Sheet metal is stated to be coated on the outer circumference surface of the whole hanger body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621225202.7U CN206394429U (en) | 2016-11-14 | 2016-11-14 | A kind of lifting lug of exhaust system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621225202.7U CN206394429U (en) | 2016-11-14 | 2016-11-14 | A kind of lifting lug of exhaust system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206394429U true CN206394429U (en) | 2017-08-11 |
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ID=59508419
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621225202.7U Expired - Fee Related CN206394429U (en) | 2016-11-14 | 2016-11-14 | A kind of lifting lug of exhaust system |
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| Country | Link |
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| CN (1) | CN206394429U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106627107A (en) * | 2016-11-14 | 2017-05-10 | 清华大学苏州汽车研究院（相城） | Exhaust system lifting lug and matching method for improving NVH performance of exhaust system |
-
2016
- 2016-11-14 CN CN201621225202.7U patent/CN206394429U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106627107A (en) * | 2016-11-14 | 2017-05-10 | 清华大学苏州汽车研究院（相城） | Exhaust system lifting lug and matching method for improving NVH performance of exhaust system |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170811 Termination date: 20211114 |
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| CF01 | Termination of patent right due to non-payment of annual fee |