CN109281973A - Frequency-adjustable rubber dynamic vibration absorber and its intrinsic frequency adjusting method - Google Patents
Frequency-adjustable rubber dynamic vibration absorber and its intrinsic frequency adjusting method Download PDFInfo
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- CN109281973A CN109281973A CN201811257162.8A CN201811257162A CN109281973A CN 109281973 A CN109281973 A CN 109281973A CN 201811257162 A CN201811257162 A CN 201811257162A CN 109281973 A CN109281973 A CN 109281973A
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- flexible element
- vibration absorber
- dynamic vibration
- mass block
- frequency
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F7/00—Vibration-dampers; Shock-absorbers
- F16F7/10—Vibration-dampers; Shock-absorbers using inertia effect
- F16F7/104—Vibration-dampers; Shock-absorbers using inertia effect the inertia member being resiliently mounted
- F16F7/108—Vibration-dampers; Shock-absorbers using inertia effect the inertia member being resiliently mounted on plastics springs
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
Frequency-adjustable rubber dynamic vibration absorber and its intrinsic frequency adjusting method, including mass block and with the Flexible element of rubber, it is characterized in that the mass block is cylindrical shape, Flexible element is removably mounted in the inner cylinder of mass block, and Flexible element is sequentially stacked from top to bottom in the inner cylinder of mass block, and quantity is adjustable.Rubber hardness different Flexible element can be installed in the present invention in mass block, to pass through the rigidity for changing Flexible element, to adjust the intrinsic frequency of dynamic vibration absorber, the absorbing power of dynamic vibration absorber can also be adjusted by adjusting the quantity of Flexible element in mass block, to adjust the intrinsic frequency of dynamic vibration absorber, the Flexible element that rubber hardness can also be selected different adjusts the quantity of Flexible element again to adjust the intrinsic frequency of dynamic vibration absorber, to realize the accurate adjusting to the intrinsic frequency of dynamic vibration absorber, improve the versatility of rubber dynamic vibration absorber and the adaptability to different vibration operating conditions.
Description
Technical field
The present invention relates to a kind of frequency-adjustable rubber dynamic vibration absorber and its intrinsic frequency adjusting methods, belong to machinery and subtract
Vibration technical field.
Background technique
The basic principle of rubber dynamic vibration absorber is the spy to be matched using bump leveller intrinsic frequency and vibration equipment frequency
Property, i.e., when the two resonates equipment exciting force and bump leveller counterforce counteraction and rubber vibration deformation and in generating
Frictional heat generation decays vibrational energy, achievees the effect that absorbing with this.For different absorbing equipment, the power designed is inhaled
Device shake due to the not eliminable error of the processes such as emulation, technique bring, test result often has differences with objective result, because
This needs the relevant parameter for manufacturing experimently bump leveller repeatedly to match expected frequency, and process is cumbersome, and rubber mold higher cost, plus
The work period is long, to influence project process.
Existing rubber dynamic vibration absorber mainly uses mass inertia block+absorber rubber+mounting bracket basic structure
Principle, product after finalization of the manufacture rubber structure and rigidity fixed it is immutable.By intrinsic frequency theoretical formula:(f: intrinsic frequency, k: absorber rubber rigidity, m: quality), intrinsic frequency is related with quality and rigidity,
In quality due to being limited by conditions such as assembly space, service life and vibrating body gross masses, changes in smaller situation, control absorbing
The rigidity of rubber, so that it may achieve the purpose that control dynamic vibration absorber intrinsic frequency, according to dynamic absorber principle, when bump leveller is solid
Have frequency it is same or similar with excited frequency when, bump leveller can be only achieved optimal reduction vibration noise effect, this requires inhale
The rigidity of vibration rubber must control the most effective effect of competence exertion within the scope of small change, however, existing bump leveller exists
During the manufacturing, due to the influence that rubber product manufactures such as refining glue, vulcanization technical process is deteriorated, the manufactured suction come out
Vibration rubber bodies rigidity 100% can not be met the requirements, and qualification rate is lower, and rejected product can not do over again reprocessing, caused by
It wastes larger.
Through searching for, have with the immediate rubber bump leveller technology prior art of the present invention:
1, CN103206474 A, a kind of dynamic vibration absorber that can quickly adjust resonant frequency；
2, CN205780556 U, dynamic vibration absorber；
3, CN205064666U, a kind of adjustable rubber bump leveller of frequency.
4, CN104696428A, rubber dynamic vibration absorber.
The problem of rubber dynamic vibration absorber in the prior art and disadvantage are as follows:
1) in " dynamic vibration absorber that CN103206474 A one kind can quickly adjust resonant frequency ", the tune of bump leveller intrinsic frequency
Section is being screwed into depth and realize by control elastomer.Therefore it is provided with screw thread on elastomer, it certainly will be to the hardness of elastomer
It can claim, limit the absorbing frequency range of bump leveller.
2) " CN205780556 U dynamic vibration absorber ", in " CN104696428A rubber dynamic vibration absorber ", bump leveller is intrinsic
The adjusting of frequency is to be realized by squeezing elastomer to change elastomer rigidity.The carrying of rubber will be will increase, for rubber
This shearing-type rubber shock-absorbing original part of glue dynamic vibration absorber, will certainly occur creep, and ever-increasing creep can be such that structure is holding
Design requirement during load is unable to get guarantee and fails.
3) in " a kind of adjustable rubber bump leveller of frequency of CN205064666 U ", the adjusting of bump leveller intrinsic frequency is logical
The weight of change mass block is crossed to realize.This method cannot accurately adjust absorbing frequency, need by debugging matter repeatedly
The examination of gauge block weight is gathered, and is more troublesome.
Summary of the invention
Frequency-adjustable rubber dynamic vibration absorber and its intrinsic frequency adjusting method provided by the invention realize intrinsic frequency
Accurate adjusting, improve rubber dynamic vibration absorber versatility and to it is different vibration operating conditions adaptability, structure is simple, elasticity
The interchangeability of unit is strong, does not change the space occupancy rate of dynamic vibration absorber, practical.
In order to achieve the above objectives, the technical solution adopted by the present invention is that:
Frequency-adjustable rubber dynamic vibration absorber, including mass block and with the Flexible element of rubber, it is characterised in that
The mass block is cylindrical shape, and Flexible element is removably mounted in the inner cylinder of mass block, and Flexible element is in matter
It is sequentially stacked from top to bottom in the inner cylinder of gauge block, and quantity is adjustable.
It preferably, further include mandrel, the mandrel, can with Flexible element along the inner cylinder that central axes are inserted into mass block
Dismantling connection.
Preferably, the Flexible element is annular, and the inner sidewall of Flexible element is contacted with mandrel, lateral wall and mass block
Inner sidewall contact.
Preferably, the Flexible element by internal layer about collar, be arranged in internal layer constraint set periphery housing about collar and
The elastic rubber layer of internal layer about collar and housing about collar is connected, the internal layer about collar and mandrel screw are cooperatively connected, outside
Layer about collar is threadedly engaged with mass block to be connect.
Preferably, the internal layer about collar and outer layer about collar with a thickness of the 1/5 ~ 1/4 of elastic rubber layer thickness, and
The weight of Flexible element is less than the 1/20 of mass block weight.
Preferably, the mandrel is the hierarchic structure of T font, and the miner diameter end of mandrel is inserted into the inner cylinder of mass block, greatly
Diameter end, which has, is threadedly coupled cylinder, and the diameter of mandrel miner diameter end is no more than the 1/4 of mass block internal diameter.
Preferably, the mass block includes cylindrical quality cylinder and quality adjustment ring, and Flexible element is mounted in quality
In the inner cylinder of cylinder, the quality adjustment ring is coaxially detachably arranged on quality cylinder, and the quality adjustment ring on quality cylinder
Quantity is adjustable.
Preferably, the quality cylinder is in inverted T font shape, and the upper semisection of quality cylinder has external screw thread, quality adjustment ring
With internal screw thread corresponding with the external screw thread of quality cylinder upper semisection, quality adjustment ring is coaxially mounted to quality by screw cooperation
On cylinder.
The intrinsic frequency adjusting method of the above-described adjustable rubber dynamic vibration absorber of frequency, it is characterised in that adjustment elasticity
The quantity of unit and/or the different elastic element of selection rubber hardness adjust intrinsic frequency.
Preferably, the quantity of quality adjustment ring in mass block is adjusted to adjust intrinsic frequency.
Advantageous effect of the invention is:
1, Flexible element is removably mounted in the inner cylinder of mass block in the present invention, and the quantity of Flexible element is adjustable, Ke Yi
Rubber hardness different Flexible element is installed, thus by the rigidity for changing Flexible element, to adjust dynamic absorber in mass block
The intrinsic frequency of device can also adjust the absorbing power of dynamic vibration absorber by adjusting the quantity of Flexible element in mass block,
To adjust the intrinsic frequency of dynamic vibration absorber, the Flexible element that rubber hardness can also be selected different adjusts Flexible element again
Quantity adjust the intrinsic frequency of dynamic vibration absorber, to realize to the accurate adjusting of the intrinsic frequency of dynamic vibration absorber, mention
The versatility of high rubber dynamic vibration absorber and to it is different vibration operating conditions adaptability.
2, the cylindrical shape of mass block in frequency-adjustable rubber dynamic vibration absorber of the invention, Flexible element are mounted in quality
In the inner cylinder of block, fixed frequency, structure letter are adjusted by adjusting the quantity of rubber hardness and Flexible element in Flexible element
Single, the interchangeability of Flexible element is strong, does not change the space occupancy rate of dynamic vibration absorber, practical.
3, mandrel is designed in the adjustable rubber dynamic vibration absorber of frequency, is coaxially folded multiple Flexible elements by mandrel
The axially mounted of dynamic vibration absorber is realized in mass block, and through mandrel, to realize that vibration is transferred to power along axial direction and inhales
Shake device, and from the radially even dispersion in central axes, improves dynamic vibration absorber absorbing efficiency, the absorbing reliability of dynamic vibration absorber is more
By force.
4, mass block is designed as separate structure, it is also adjustable dynamic by the quantity for adjusting quality adjustment ring in mass block
The intrinsic frequency of power bump leveller further enhances the frequency adjustable function of rubber dynamic vibration absorber, improves rubber dynamic vibration absorber
Practicability.
Detailed description of the invention
Fig. 1 is the cross-sectional view of frequency-adjustable rubber dynamic vibration absorber in specific embodiment.
Specific embodiment
It elaborates below with reference to Fig. 1 to the embodiment of the present invention.
Frequency-adjustable rubber dynamic vibration absorber, the Flexible element 2 including mass block 1 and with rubber, it is characterised in that
The mass block 1 is cylindrical shape, and Flexible element 2 is removably mounted in the inner cylinder of mass block 1, and Flexible element 2
It is sequentially stacked from top to bottom in the inner cylinder of mass block 1, and quantity is adjustable.
As shown, Flexible element 2 is removably mounted in the inner cylinder of mass block, and the quantity of Flexible element is adjustable, can
To install the different Flexible element 2 of rubber hardness in mass block, thus by the rigidity for changing Flexible element, to adjust power
The intrinsic frequency of bump leveller can also adjust the absorbing of dynamic vibration absorber by adjusting the quantity of Flexible element 2 in mass block 1
Power, to adjust the intrinsic frequency of dynamic vibration absorber, the Flexible element 2 that rubber hardness can also be selected different adjusts bullet again
Property unit 2 quantity adjust the intrinsic frequency of dynamic vibration absorber, to realize to the accurate of the intrinsic frequency of dynamic vibration absorber
It adjusts, improves the versatility of rubber dynamic vibration absorber and the adaptability to different vibration operating conditions.That is in mass block 1
Flexible element 2 can be designed with the absorbing demand of vibratory equipment, the Flexible element 2 for selecting rubber hardness different and/or adjustment
The quantity of Flexible element 2 can achieve the purpose of adjustment bump leveller fixed frequency.
And the cylindrical shape of mass block 1, Flexible element 2 is in the inner cylinder of mass block, by adjusting in Flexible element
Rubber hardness and the quantity of Flexible element adjust fixed frequency, structure is simple, and the interchangeability of Flexible element is strong, can not change
The space occupancy rate of power bump leveller, it is practical.
It wherein, further include mandrel 3, the mandrel 3 is along the inner cylinder that central axes are inserted into mass block 2, with Flexible element 2
It is detachably connected, the Flexible element 2 is annular, and the inner sidewall 1 of Flexible element 2 is contacted with mandrel 3, lateral wall and mass block
2 inner sidewall contact.Multiple Flexible elements are coaxially stacked in mass block by mandrel 3, and realize that power is inhaled by mandrel 3
It shakes the axially mounted of device, to realize that vibration is transferred to dynamic vibration absorber along axial direction, and from the radially even dispersion in central axes, improves
The absorbing reliability of dynamic vibration absorber absorbing efficiency, dynamic vibration absorber is stronger.
Wherein, the Flexible element 2 by internal layer about collar 21, be arranged in internal layer constraint set 21 peripheries housing about collar
22 and connection internal layer about collar 21 and housing about collar 22 elastic rubber layer 23, the internal layer about collar 21 and 3 spiral shell of mandrel
Silk is cooperatively connected, and outer layer about collar 22 is threadedly engaged with mass block 2 to be connect.
As shown, internal layer about collar 21 is used for the connection of Flexible element 2 and mandrel 3, outer layer about collar 22 is for elasticity
The connection of unit 2 and mass block 1 is threadedly engaged the installation and removal of Flexible element 2 easy to connect.The vulcanization of elastic rubber layer 23 is viscous
Knot constrains between set and housing about collar in internal layer.
Wherein, the internal layer about collar 21 and outer layer about collar 22 with a thickness of the 1/5 ~ 1/ of 23 thickness of elastic rubber layer
4, and the weight of Flexible element 2 is less than the 1/20 of 1 weight of mass block.Since the adjustment to Flexible element 2 is to change elasticity
The absorbing efficiency of unit 2, is not intended to the weight of motivation of adjustment bump leveller, so making because of the weight for controlling Flexible element 2
The total weight of power bump leveller controls in small variation range, guarantees the accuracy of frequency modulation.
Wherein, the mandrel 3 is the hierarchic structure of T font, and the miner diameter end of mandrel 3 is inserted into the inner cylinder of mass block 1,
Bigger diameter end, which has, is threadedly coupled cylinder 31, facilitates the connection of mandrel 3 Yu vibratory equipment, and the diameter of 12 miner diameter end of mandrel is no more than matter
The 1/4 of 2 internal diameter of gauge block, avoid because 12 diameter of mandrel it is excessive caused by Flexible element 2 rubber thickness is too small does not have effective absorbing
Effect.
Wherein, the mass block 1 includes cylindrical quality cylinder 11 and quality adjustment ring 12, and Flexible element 2 is mounted in
In the inner cylinder of quality cylinder 11, the quality adjustment ring 12 is coaxially detachably arranged on quality cylinder 11, and on quality cylinder 11
12 quantity of quality adjustment ring it is adjustable, by adjusting the quantity of quality adjustment ring in mass block also adjustable dynamic vibration absorber
Intrinsic frequency, further enhance the frequency adjustable function of rubber dynamic vibration absorber, improve the practicability of rubber dynamic vibration absorber.
The quality cylinder 11 is in inverted T font shape, and the upper semisection of quality cylinder 11 has external screw thread, and quality adjustment ring 12 has
There is internal screw thread corresponding with the external screw thread of 11 upper semisection of quality cylinder, quality adjustment ring 12 is coaxially mounted to matter by screw cooperation
On graduated cylinder 11.The mode that screw is cooperatively connected facilitates the installation and removal of quality adjustment ring 12, and can effectively avoid vibration processes
The separation that falls off of middle quality adjustment ring 12.
The present invention also protects the intrinsic frequency adjusting method of the adjustable rubber dynamic vibration absorber of above-described frequency, feature
It is to adjust the quantity of Flexible element 2 and/or the different elastic element 2 of selection rubber hardness to adjust intrinsic frequency.I.e. to bullet
Property unit 2 adjustment there are three types of mode: one, adjust the quantity of Flexible element 2, so as to adjust the amount of rubber in dynamic vibration absorber,
Change absorbing power, to adjust the intrinsic frequency of bump leveller；Two, the different Flexible element 2 of selection rubber hardness, to change bullet
Property unit 2 rubber elastic deformability, that is, change rubber rigidity, to adjust the intrinsic frequency of bump leveller；It three, will be upper
It is comprehensive together to state two ways, that is, the Flexible element for selecting rubber hardness different adjusts the quantity of Flexible element again to adjust power
The intrinsic frequency of bump leveller；The intrinsic frequency of dynamic vibration absorber is adjusted in three kinds of modes, reaches the mesh of effectively accurate frequency modulation
's.
Table 1 is the quantity of adjustment Flexible element 2 and/or the power suction that the elastic element 2 for selecting rubber hardness different obtains
Device intrinsic frequency of shaking changes table.
Wherein, ordinate indicates the Young's modulus of elastic rubber layer 23 in Flexible element 2, and abscissa indicates Flexible element 2
Number, data indicate the intrinsic frequency of dynamic vibration absorber, unit Hz in table.
。
As can be seen from the table, under elastomer Young's modulus the same terms, the intrinsic frequency of dynamic vibration absorber is with bullet
Property 2 several increases of unit and increase；2 number of Flexible element under the same conditions, absorbing frequency with rubber Young mould
The increase of amount and increase.Therefore in the frequency range of 11.8Hz -56Hz, the intrinsic frequency of dynamic vibration absorber can pass through tune
The quantity of whole Flexible element 2 and/or the different elastic element 2 of selection rubber hardness are adjusted, and wherein Young's modulus is that description is solid
Body material resists the physical quantity of deformability, and measurement is an isotropic elastic body (elastic rubber layer in Flexible element)
Rigidity, the quantity of Young's modulus is bigger, indicates that the resistance deformability of rubber is stronger, hardness is larger, more rigid.
Because mass block 1 is designed as separate structure in the above-described adjustable rubber dynamic vibration absorber of frequency,
Intrinsic frequency can be adjusted by adjusting the quantity of quality adjustment ring 12 in mass block 1.Further enhance rubber dynamic absorber
The frequency adjustable function of device improves the practicability of rubber dynamic vibration absorber.
It is completely described in conjunction with technical solution of the attached drawing to the embodiment of the present invention above, it should be noted that described
Embodiment be only a part of the embodiments of the present invention.Based on the embodiments of the present invention, those of ordinary skill in the art exist
Every other embodiment obtained under the premise of creative work is not made, shall fall within the protection scope of the present invention.
Claims (10)
1. frequency-adjustable rubber dynamic vibration absorber, the Flexible element (2) including mass block (1) and with rubber, feature exists
In
The mass block (1) is cylindrical shape, and Flexible element (2) is removably mounted in the inner cylinder of mass block (1), and elasticity
Unit (2) is sequentially stacked from top to bottom in the inner cylinder of mass block (1), and quantity is adjustable.
2. frequency-adjustable rubber dynamic vibration absorber according to claim 1, it is characterised in that further include mandrel (3), institute
The mandrel (3) stated is detachably connected along the inner cylinder that central axes are inserted into mass block (2) with Flexible element (2).
3. frequency-adjustable rubber dynamic vibration absorber according to claim 2, it is characterised in that the Flexible element (2)
Inner sidewall (1) for annular, Flexible element (2) is contacted with mandrel (3), and lateral wall is contacted with the inner sidewall of mass block (2).
4. the adjustable rubber dynamic vibration absorber of frequency according to claim 3, it is characterised in that the Flexible element (2) by
Internal layer about collar (21), setting internal layer constrain set (21) periphery housing about collar (22) and connection internal layer about collar (21) and
The elastic rubber layer (23) of housing about collar (22), the internal layer about collar (21) and mandrel (3) screw are cooperatively connected, outer layer
About collar (22) is threadedly engaged with mass block (2) and connect.
5. the adjustable rubber dynamic vibration absorber of frequency according to claim 4, it is characterised in that the internal layer about collar
(21) and outer layer about collar (22) with a thickness of the 1/5 ~ 1/4 of elastic rubber layer (23) thickness, and the weight of Flexible element (2) is small
In the 1/20 of mass block (1) weight.
6. the adjustable rubber dynamic vibration absorber of frequency according to claim 3, it is characterised in that the mandrel (3) is T word
The miner diameter end of the hierarchic structure of type, mandrel (3) is inserted into the inner cylinder of mass block (1), and bigger diameter end, which has, is threadedly coupled cylinder (31), and
The diameter of mandrel (12) miner diameter end is no more than the 1/4 of mass block (2) internal diameter.
7. the adjustable rubber dynamic vibration absorber of frequency according to claim 1, it is characterised in that the mass block (1) includes
Cylindrical quality cylinder (11) and quality adjustment ring (12), Flexible element (2) are described in the inner cylinder of quality cylinder (11)
Quality adjustment ring (12) is coaxially detachably arranged on quality cylinder (11), and quality adjustment ring (12) number on quality cylinder (11)
Amount is adjustable.
8. the adjustable rubber dynamic vibration absorber of frequency according to claim 7, it is characterised in that the quality cylinder (11) is in
Inverted T font shape, the upper semisection of quality cylinder (11) have external screw thread, and quality adjustment ring (12) has and quality cylinder (11) upper semisection
The corresponding internal screw thread of external screw thread, quality adjustment ring (12) by screw cooperation is coaxially mounted on quality cylinder (11).
9. the intrinsic frequency adjusting method of the described in any item frequencies of claim 1 to 8 are adjustable rubber dynamic vibration absorber, feature
It is to adjust the quantity of Flexible element (2) and/or the different elastic element (2) of selection rubber hardness to adjust intrinsic frequency.
10. intrinsic frequency adjusting method according to claim 9, it is characterised in that adjust quality adjustment in mass block (1)
The quantity of ring (12) adjusts intrinsic frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811257162.8A CN109281973B (en) | 2018-10-26 | 2018-10-26 | Frequency-adjustable rubber dynamic vibration absorber and natural frequency adjusting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811257162.8A CN109281973B (en) | 2018-10-26 | 2018-10-26 | Frequency-adjustable rubber dynamic vibration absorber and natural frequency adjusting method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN109281973A true CN109281973A (en) | 2019-01-29 |
| CN109281973B CN109281973B (en) | 2021-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811257162.8A Active CN109281973B (en) | 2018-10-26 | 2018-10-26 | Frequency-adjustable rubber dynamic vibration absorber and natural frequency adjusting method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112576668A (en) * | 2020-12-03 | 2021-03-30 | 上汽大众汽车有限公司 | Dynamic vibration absorber of transmission shaft |
| CN113085465A (en) * | 2021-04-21 | 2021-07-09 | 北京汽车集团越野车有限公司 | Rear axle vibration absorption assembly, vehicle, and vibration absorption assembly frequency adjustment method and device |
| CN113565912A (en) * | 2021-06-22 | 2021-10-29 | 东风汽车集团股份有限公司 | Dynamic vibration absorption structure and method with self-adaptive and fast-adjustable resonance frequency |
| CN114912308A (en) * | 2022-04-08 | 2022-08-16 | 江苏科技大学 | Vertical low-frequency multi-mode vibration suppressor and application method thereof |
| CN115030984A (en) * | 2022-05-27 | 2022-09-09 | 中国第一汽车股份有限公司 | Rapid trial-manufacture variable-frequency dynamic vibration absorber and matching verification method thereof |
| CN117167434A (en) * | 2023-11-03 | 2023-12-05 | 哈尔滨工程大学 | Multi-frequency adjustable-frequency dynamic vibration absorber |
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| JP2007211953A (en) * | 2006-02-13 | 2007-08-23 | Bridgestone Corp | Base isolation system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112576668A (en) * | 2020-12-03 | 2021-03-30 | 上汽大众汽车有限公司 | Dynamic vibration absorber of transmission shaft |
| CN113085465A (en) * | 2021-04-21 | 2021-07-09 | 北京汽车集团越野车有限公司 | Rear axle vibration absorption assembly, vehicle, and vibration absorption assembly frequency adjustment method and device |
| CN113565912A (en) * | 2021-06-22 | 2021-10-29 | 东风汽车集团股份有限公司 | Dynamic vibration absorption structure and method with self-adaptive and fast-adjustable resonance frequency |
| CN114912308A (en) * | 2022-04-08 | 2022-08-16 | 江苏科技大学 | Vertical low-frequency multi-mode vibration suppressor and application method thereof |
| CN115030984A (en) * | 2022-05-27 | 2022-09-09 | 中国第一汽车股份有限公司 | Rapid trial-manufacture variable-frequency dynamic vibration absorber and matching verification method thereof |
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|---|---|
| CN109281973B (en) | 2021-04-16 |
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