CN203161948U - Multi-degree of freedom dynamic vibration absorber - Google Patents
Multi-degree of freedom dynamic vibration absorber Download PDFInfo
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- CN203161948U CN203161948U CN 201320130935 CN201320130935U CN203161948U CN 203161948 U CN203161948 U CN 203161948U CN 201320130935 CN201320130935 CN 201320130935 CN 201320130935 U CN201320130935 U CN 201320130935U CN 203161948 U CN203161948 U CN 203161948U
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- vibration absorber
- dynamic vibration
- absorbing mechanism
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Abstract
The utility model belongs to the technical field of vibration and noise reduction of industrial equipment, and provides a multi-degree of freedom dynamic vibration absorber. The multi-degree of freedom dynamic vibration absorber comprises a base (1) and vibration and absorbing mechanisms, wherein a plurality of vibration absorbing mechanisms are arranged corresponding to a plurality of frequencies and are vertically arranged according to different frequencies, the plurality of the vibration absorbing mechanisms are connected into a whole, the vibration absorbing mechanism with the lowest frequency is connected with the base, each vibration absorbing mechanism comprises a vibration absorbing unit and a mass block, and each mass block and each vibration absorbing unit are connected into a whole. The multi-degree of freedom dynamic vibration absorber can achieve vibration reduction of low frequencies and high frequencies even the plurality of frequencies in the small space, and accordingly achieve vibration reduction processing of the equipment in a wideband range efficiently.
Description
Technical field
The utility model belongs to industry equipment noise reduction technology field, relates generally to a kind of multi-freedom degree dynamic vibration absorber.
Background technique
Dynamic vibration absorber is a kind of of vibration damper, and its basic principle is the quality-spring system that adds a single-degree-of-freedom in the main vibrating system of want vibration damping, forms coupled system.When the natural frequency of additional quality-spring system overlapped with the resonant frequency of main vibrating system, quality-spring system resonated, the vibration aggravation, and the vibration amplitude of main vibrating system reduces greatly, thus protected main vibrating system.
From the basic principle of dynamic vibration absorber as can be seen, the effect frequency of each additional power bump leveller is single-frequency, and this frequency is determined by quality m and the rigidity k of quality-spring system.Each fixedly the effect frequency of the dynamic vibration absorber of m and k value fix.In actual life, no matter power source still is driven machinery, its vibrational state is the master of the single-frequency peak value that shakes not just often, low frequency and high frequency are superimposed often, therefore for above-mentioned situation, adopting frequency corresponding relation one to one that dynamic vibration absorber is installed merely, to solve the mode of vibration problem then more loaded down with trivial details, and especially under the condition of limited of installing space position, this shortcoming is particularly outstanding.
Patent 200820153430.7 is that the basic principle according to dynamic vibration absorber has proposed a kind of dynamic vibration absorber.Though this dynamic vibration absorber natural frequency can be regulated its natural frequency by the rigidity size of quality of regulation piece quality size and block rubber, under the situation that its quality and block rubber rigidity value are determined, its natural frequency is still a single-frequency value.
Patent 200920067908.9 is improvement on patent 200820153430.7, it is that mode by the additional bob-weight quality has solved the latter and can not conveniently regulate the problem of dynamic vibration absorber natural frequency, but does not realize that still a dynamic vibration absorber is in a plurality of frequencies of the single direction effect of vibration damping simultaneously.
The model utility content
The purpose of this utility model is to propose a kind of multi-freedom degree dynamic vibration absorber, can enough realize the vibration damping of low frequency and two kinds of high frequencies even a plurality of frequencies in less space, thereby the vibration damping of realizing equipment in wide frequency range is handled.
The above-mentioned purpose of finishing the utility model adopts following technological scheme:
A kind of multi-freedom degree dynamic vibration absorber, described multi-freedom degree dynamic vibration absorber includes base and absorbing mechanism; Described absorbing mechanism is many covers that corresponding a plurality of frequency arranges, and overlaps described absorbing mechanism according to the height upper and lower settings of frequency more, and overlaps described absorbing mechanism more and connect as one, and the absorbing mechanism of low-limit frequency is connected with base; Described absorbing mechanism includes absorbing unit and mass block; Described mass block and absorbing unit connect as one.
The described absorbing of many covers mechanism adopts bonding hot vulcanization or the sticking mode of cold glue to form one.
Has the mounting hole that is connected in order to matrix on the described base.
The end face shape of described base is consistent with the absorbing cell configuration of low-limit frequency absorbing mechanism.
Described absorbing unit is the vulcanized rubber piece.
Described mass block is lead or bloom.
A kind of multi-freedom degree dynamic vibration absorber that the utility model proposes, adopt technique scheme to have following effect:
1, dynamic vibration absorber of the present utility model can realize that a dynamic vibration absorber is in the effect of single direction realization low frequency and high frequency even multifrequency while vibration damping.
2, the size of the rigidity of the quality that dynamic vibration absorber of the present utility model can be by the quality of regulation piece and absorbing unit realizes the adjusting of low frequency and high frequency frequency, the peak value of effective attenuation different resonant frequencies.
3, dynamic vibration absorber of the present utility model is simple in structure, and processing and easy for installation can be carried out industrialization promotion.
In sum, the utility model can be realized the vibration damping of low frequency and two kinds of high frequencies even a plurality of frequencies in less space, thereby the vibration damping of realizing equipment in wide frequency range is handled.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model multi-freedom degree dynamic vibration absorber test effect figure.
Among the figure: 1, base, 2, low frequency absorbing unit, 3, the low frequency mass block, 4, high frequency absorbing unit, 5, the high frequency mass block, 6, mounting hole.
Embodiment
With embodiment the utility model is illustrated by reference to the accompanying drawings:
As shown in Figure 1, a kind of multi-freedom degree dynamic vibration absorber, described multi-freedom degree dynamic vibration absorber includes base 1 and absorbing mechanism; Described absorbing mechanism is many covers that corresponding a plurality of frequency arranges, and overlaps described absorbing mechanism according to the height upper and lower settings of frequency more, and overlaps described absorbing mechanism more and connect as one, and the absorbing mechanism of low-limit frequency is connected with base; Described absorbing mechanism includes absorbing unit and mass block; Described mass block and absorbing unit connect as one; This embodiment is example with two degrees of freedom, and among this embodiment, described absorbing mechanism is two covers: high frequency absorbing mechanism and low frequency absorbing mechanism; It is one that the low frequency absorbing unit 2 of low frequency absorbing mechanism adopts bonding hot vulcanization with base 1; The low frequency mass block 3 of low frequency absorbing mechanism is bonded on the low frequency absorbing unit 2 by the hot vulcanization mode; The high frequency absorbing unit 4 of high frequency absorbing mechanism is bonded on the low frequency mass block 3 by the sticking mode of cold glue, and the high frequency mass block 5 of high frequency absorbing mechanism is bonded on the high frequency absorbing unit 4 by the hot vulcanization mode; Has the mounting hole 6 in order to be connected with matrix on the described base 1, the end face shape of described base 1 is consistent with low frequency absorbing unit 2 shapes of low frequency absorbing mechanism, described low frequency absorbing unit 2, high frequency absorbing unit 4 adopt identical materials, are the vulcanized rubber piece.
Described low frequency mass block 3, high frequency mass block 5 are lead or bloom, and high frequency absorbing unit 4 and high frequency mass block 5 meet the relation of (c＜1), wherein, and f
HighBe the frequency of high frequency absorbing mechanism, K is the rigidity of high frequency absorbing unit 4, and M is the quality of high frequency mass block 5, and c is the material damping of high frequency absorbing unit 4 and low frequency absorbing unit 2, and under the certain situation of its material, c is definite value.In addition, in low frequency absorbing mechanism frequency f
LowUnder the situation about determining, the rigidity k of the quality m of low frequency mass block 3, low frequency absorbing unit 2
Low, high frequency mass block 5 mass M three satisfy the relation of (c＜1).
Vibration processing with a certain anti-explosion motor is example, by vibration-testing, at axis vertical direction low frequency 100Hz and high frequency 545Hz place higher vibration peak is arranged on the motor, intends adopting the multi-freedom degree dynamic vibration absorber that above-mentioned two kinds of frequencies are focused on.The high frequency absorbing unit 4 of dynamic vibration absorber is the little damping vulcanized rubber piece of 70*35*10.5mm, high frequency mass block 5 is the bloom of 70*35*16mm, low frequency absorbing unit 2 adopts the little damping vulcanized rubber of 70*35*40mm piece, and low frequency mass block 3 is the bloom of 70*35*48mm.The mutual bonding plane of the above-mentioned parts mode by bonding hot vulcanization is connected with base, supports the multi-freedom degree dynamic vibration absorber, be installed in the maximum position of motor oscillating.
By measure of merit, this type dynamic vibration absorber can effectively decay low frequency 100Hz on the vertical direction of electrical axis and the vibration peak of high frequency 545Hz, overall effectiveness in vibration suppression is up to 10db.Effect as shown in Figure 2.
Above the utility model has been carried out the exemplary description of a two degrees of freedom dynamic vibration absorber, obviously the utility model specific implementation is not subjected to the restriction of aforesaid way, and concrete structure can be realized the form of Three Degree Of Freedom even more freedom.As long as adopted method of the present utility model to conceive the change of the various unsubstantialities that carry out, all in protection domain of the present utility model.
Claims (6)
1. multi-freedom degree dynamic vibration absorber, it is characterized in that: described multi-freedom degree dynamic vibration absorber includes base (1) and absorbing mechanism; Described absorbing mechanism is many covers that corresponding a plurality of frequency arranges, and overlaps described absorbing mechanism according to the height upper and lower settings of frequency more, and overlaps described absorbing mechanism more and connect as one, and the absorbing mechanism of low-limit frequency is connected with base; Described absorbing mechanism includes absorbing unit and mass block; Described mass block and absorbing unit connect as one.
2. multi-freedom degree dynamic vibration absorber according to claim 1 is characterized in that: overlap described absorbing mechanism's employing bonding hot vulcanization or the sticking mode of cold glue more and form one.
3. multi-freedom degree dynamic vibration absorber according to claim 1, it is characterized in that: described base has the mounting hole that is connected in order to matrix on (1).
4. multi-freedom degree dynamic vibration absorber according to claim 1, it is characterized in that: the end face shape of described base (1) is consistent with the absorbing cell configuration of low-limit frequency absorbing mechanism.
5. multi-freedom degree dynamic vibration absorber according to claim 1, it is characterized in that: described absorbing unit is the vulcanized rubber piece.
6. multi-freedom degree dynamic vibration absorber according to claim 1, it is characterized in that: described mass block is lead or bloom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320130935 CN203161948U (en) | 2013-03-21 | 2013-03-21 | Multi-degree of freedom dynamic vibration absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320130935 CN203161948U (en) | 2013-03-21 | 2013-03-21 | Multi-degree of freedom dynamic vibration absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203161948U true CN203161948U (en) | 2013-08-28 |
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ID=49023134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320130935 Expired - Lifetime CN203161948U (en) | 2013-03-21 | 2013-03-21 | Multi-degree of freedom dynamic vibration absorber |
Country Status (1)
| Country | Link |
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| CN (1) | CN203161948U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104633400A (en) * | 2014-11-10 | 2015-05-20 | 无锡市天力五金弹簧厂 | Elastic supporting seat |
| CN105134851A (en) * | 2015-08-27 | 2015-12-09 | 重庆长安汽车股份有限公司 | Power vibration absorber with directionally adjustable frequency |
| CN110985583A (en) * | 2019-12-23 | 2020-04-10 | 上海嘉朗实业有限公司 | Dynamic vibration absorber and processing technology thereof |
| CN111664209A (en) * | 2020-07-13 | 2020-09-15 | 西南交通大学 | Vibration absorber, floating plate rail and vibration absorbing method |
-
2013
- 2013-03-21 CN CN 201320130935 patent/CN203161948U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104633400A (en) * | 2014-11-10 | 2015-05-20 | 无锡市天力五金弹簧厂 | Elastic supporting seat |
| CN105134851A (en) * | 2015-08-27 | 2015-12-09 | 重庆长安汽车股份有限公司 | Power vibration absorber with directionally adjustable frequency |
| CN110985583A (en) * | 2019-12-23 | 2020-04-10 | 上海嘉朗实业有限公司 | Dynamic vibration absorber and processing technology thereof |
| CN110985583B (en) * | 2019-12-23 | 2023-03-14 | 上海嘉朗实业有限公司 | Dynamic vibration absorber and processing technology thereof |
| CN111664209A (en) * | 2020-07-13 | 2020-09-15 | 西南交通大学 | Vibration absorber, floating plate rail and vibration absorbing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130828 |
|
| CX01 | Expiry of patent term |