CN203585184U - Vibration absorber based on polyurethane fillers - Google Patents
Vibration absorber based on polyurethane fillers Download PDFInfo
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- CN203585184U CN203585184U CN201320472757.1U CN201320472757U CN203585184U CN 203585184 U CN203585184 U CN 203585184U CN 201320472757 U CN201320472757 U CN 201320472757U CN 203585184 U CN203585184 U CN 203585184U
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- vibration damper
- polyurethane
- vibration
- backing plate
- elastic granule
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Abstract
The utility model discloses a vibration absorber based on polyurethane fillers. The vibration absorber comprises a round-barrel-shaped housing, a cushion plate and elastic particles, wherein the elastic particles comprises polyurethane particles and arranged in the housing; and the cushion plate is arranged between the elastic particles and an opening of the housing. The vibration absorber based on the polyurethane fillers is simply structured; and with the vibration absorber housing filled with elastic material with polyurethane particles, various forming movements of a system can be prevented from being interrupted and damaged by vibration during production of a weaving machine, so production efficiency and service life of the weaving machine are improved.
Description
Technical field
The utility model belongs to the vibration and noise reducing field of industry equipment, is specifically related to a kind of vibration damper based on filling polyurethane thing.
Background technique
At a high speed and high-power machinery equipment develop problems such as bringing serious vibration and noise rapidly, long-time use can cause part of devices to lose efficacy, instrument and apparatus is malfunctioning, the lost of life, when serious, even affect precision and the efficiency of machinery, the Performance And Reliability of reduction equipment, thereby initiation catastrophic effect, impact is produced, and causes extremely heavy economic loss.Elastic damping material and technology are the effective methods that vibration and noise occur for control structure resonance, structure, not only become the research field of very paying attention in the world, and in industrial quarters, obtained a lot of successfully application, and obtained significant progress and achievement in recent years.In the German heavy mechanical equipment of China's import, major part has all adopted elastic damping material to reduce mechanical vibration and noise; And for example relay is class vibration sensing parts, and excessive vibratory response meeting makes relay malfunction and causes serious accident.The relay board of using on U.S.'s satellite, adopts the free damping material magnification factor that makes to resonate to be down to 6 by 44.Therefore, the inexorable trend of damping material and correlation technique application in electronics and the design of machinery vibration reduction and cushioning, makes research, development and utilization to it more and more be subject to people's attention, and has produced great society and economic benefit.
Utilizing the preparation damping materials such as polyurethane, pitch is a kind of new material of the high-quality low-cost that grows up along with the requirement of vibration damping and noise reducing technology, and it has many premium properties.First, it has stronger cohesive force, thereby the different material that can bond is realized different functions; It also has plasticity and viscoelasticity, under external force, even if being crushed appears in semi-solid asphalt or fix-bitumen, extension, turn round the metabolies such as volume, after external force is cancelled, still can keep original shape and be not destroyed (crack or disconnection); Finally, it also has temperature dependency, anti-water permeability and corrosion resistance, and bituminous material is fine at high temperature condition compacted under, water-soluble and have certain water proofing property hardly, also has the ability of opposing acid, alkali, salt corrosion simultaneously.When preparing damping material, need to add various loose fillers (as sawdust, carbon black, graphite) to wrap up, thereby and be bonded to the entirety with some strength with structural metallic materials and realize various function.The basic recipe of pitch viscoelasticity damping materials is take pitch as base material, and allocates a large amount of organic and inorganic fillers into and mix.Pitch itself is a kind of material with medium damping, and the vibrational energy producing because of friction on the interface of pitch and filler changes to heat energy, in the decay of vibration, plays a major role.In addition, the proportion of filler, shape, particle diameter, size distribution, surface activity etc. also have very large relation with the performance of damping material.
The loss of asphalt polymer in the process of using as damping material makes stress conversion for heat, and the suitably filler such as carbon-black doped, graphite contributes to improve the thermal conductivity of damping material, avoids damping material because of overheated and aging.In addition, graphite and carbon black have advantages of the degraded of preventing, can protect filled polymer to avoid occurring ultraviolet ray and irradiate the degraded causing.People's new era to material with carbon element research has been started in the discovery of Graphene in 2004, and it is a kind of new material of the individual layer sheet structure consisting of carbon atom.Graphene is considered to hypothetical structure always, stable existence separately, until 2004, the physicist An Deliehaimu of Univ Manchester UK and Constantine Nuo Woxiaoluofu, successfully in experiment, from graphite, isolate Graphene, and confirming that it can individualism, two people also serve as reasons because of " in the initiative experiment of two-dimentional grapheme material ", jointly obtain Nobel Prize in physics in 2010.Graphene be at present the thinnest be in the world the hardest nanometer material also, it is almost completely transparent, only absorbs 2.3% light; Thermal conductivity is up to 5300W/mK, and higher than carbon nano-tube and diamond, under normal temperature, its electron mobility is than CNT or silicon wafer height, and specific resistance is lower than copper or silver, is the material of specific resistance minimum in the world at present.These special performances of Graphene have been given it can bring into play great effect in damping material, using it as bulking agent, be expected to bring into play the characteristic of its thermal conductivity superelevation, simultaneously as light rigidity bulking agent, Graphene contributes to increasing considerably and the peak value broadening of fissipation factor of material stiffness, can increase like this dissipation energy, improve the effect of vibration and noise reducing, greatly promote damping property and the effect of pitch type damping.
Therefore, need a kind of vibration damper based on filling polyurethane thing to address the above problem.
Model utility content
Model utility object: the utility model causes the various building motions of system to be interfered for vibration in frame production of machinery in prior art and destruction, manufacturing efficiency reduce, the defect of service life of a machine reduction, and a kind of vibration damper based on filling polyurethane thing is provided.
Technological scheme: for solving the problems of the technologies described above, the vibration damper based on filling polyurethane thing of the present utility model adopts following technological scheme:
A kind of vibration damper based on filling polyurethane thing, comprise shell, backing plate and the elastic granule of drum-shaped, described elastic granule comprises polyurethane particles, and described elastic granule is arranged in described shell, between described elastic granule and the opening of described shell, is provided with described backing plate.
Further, described elastic granule is arranged in the string bag.Elastic granule is arranged in the string bag, more easily concentrates elastic granule.
Further, also comprise rubber pad and retaining ring, between described elastic granule and described backing plate, be provided with described rubber pad, described retaining ring is fixed described backing plate in the enclosure.
Further, also comprise retaining ring, described retaining ring is fixed on described backing plate in the opening of described shell.
Beneficial effect: the damper structure based on filling polyurethane thing of the present utility model is simple, by the elastic material of filling tape polyurethane particles in vibration damper shell, wherein, polyurethane particles is material conventional in prior art, overcome interference and destruction that in frame production of machinery, vibration causes the various building motions of system to be subject to, improved manufacturing efficiency and machine service life.
Accompanying drawing explanation
Fig. 1 is the stereogram of the vibration damper based on filling polyurethane thing of the present utility model;
Fig. 2 is the plan view of the vibration damper based on filling polyurethane thing of the present utility model;
Fig. 3 is that the A-A of the vibration damper based on filling polyurethane thing of the present utility model is to sectional view;
Fig. 4 is the plan view of the vibration damper based on filling polyurethane thing of the present utility model;
Fig. 5 is the stereogram of shell;
Fig. 6 is the stereogram of backing plate;
Fig. 7 is the plan view of backing plate;
Fig. 8 is that the B-B of backing plate is to sectional view;
Fig. 9 is the stereogram of retaining ring;
Figure 10 is the plan view of retaining ring;
Figure 11 is that the C-C of retaining ring is to sectional view;
Figure 12 is the stereogram of rubber pad;
Figure 13 is the plan view of rubber pad;
Figure 14 is that the D-D of rubber pad is to sectional view;
Figure 15 is the loading force of the vibration damper based on filling polyurethane thing of the present utility model and three experimental result plotted curves of compress variation of 1.2kg specification;
Figure 16 is the loading force of the vibration damper based on filling polyurethane thing of the present utility model and three experimental result plotted curves of compress variation of 1.0kg specification;
Figure 17 is that the vibration measuring point of the vibration damper based on filling polyurethane thing of the present utility model is arranged schematic diagram;
The vibration damper time-domain diagram of Figure 18 the first measuring point 1.0kg specification;
The vibration damper spectrogram of Figure 19 the first measuring point 1.0kg specification;
The vibration damper time-domain diagram of Figure 20 the second measuring point 1.0kg specification;
The vibration damper spectrogram of Figure 21 the second measuring point 1.0kg specification;
The vibration damper time-domain diagram of Figure 22 the 3rd measuring point 1.2kg specification;
The vibration damper spectrogram of Figure 23 the 3rd measuring point 1.2kg specification;
The vibration damper time-domain diagram of Figure 24 the 4th measuring point 1.2kg specification;
The vibration damper spectrogram of Figure 25 the 4th measuring point 1.2kg specification;
Power and the displacement diagram of the vibration damper of the pure polyurethane of Figure 26 1.2kg specification;
Figure 27 1.2kg specification polyurethane with packing quality than the power of the vibration damper of 9:1 and displacement diagram;
Figure 28 1.2kg specification polyurethane with packing quality than the power of the vibration damper of 8:2 and displacement diagram;
Figure 29 1.0kg specification polyurethane with packing quality than the power of the vibration damper of 8:2 and displacement diagram;
Power and the displacement diagram of the vibration damper of the pure polyurethane of Figure 30 1.35kg specification.
Embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the utility model, should understand these embodiments and only for the utility model is described, be not used in restriction scope of the present utility model, after having read the utility model, those skilled in the art all fall within the application's claims limited range to the modification of the various equivalent form of values of the present utility model.
Refer to shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Figure 10, Figure 11, Figure 12, Figure 13 and Figure 14, vibration damper based on filling polyurethane thing of the present utility model, comprise shell 1, backing plate 2 and the elastic granule of drum-shaped, elastic granule comprises polyurethane particles, elastic granule is arranged in shell 1, between elastic granule and the opening of shell 1, is provided with backing plate 2.Preferably, elastic granule is arranged in the string bag.Elastic granule comprises polyurethane particles and filler, and filler is carbon black and/or Graphene.Polyurethane mixture is processing during vibrating effect, little many of the starting force that needs, and usage range is wider, and actual effectiveness in vibration suppression is better, can formulate the vibration damper of different size load, selectivity variation.Preferred, the weight ratio of polyurethane particles and filler is 8:2-9:1, and the weight ratio of polyurethane particles and filler is suitable.Also comprise rubber pad 3, between elastic granule and backing plate 2, be provided with rubber pad 3, retaining ring 4 is fixed backing plate 2 in the enclosure.Also comprise retaining ring 4, retaining ring 4 is fixed on backing plate 2 in the opening of shell 1.
Wherein, the opening of shell 1 is provided with circle first through hole, and retaining ring 4 is also provided with second through hole corresponding with the first through hole, by rivet 5, retaining ring 4 is fixed on shell 1.
The housing diameter of the vibration damper based on filling polyurethane thing of the present embodiment is 213mm, outer cover height is 105mm, wherein, in elastic granule, the quality of polyurethane particles and filler is 8:2-9:1 than scope, and the vibration damper load ability to bear of different model is different with yield force, and its maneuvering load scope is 1000kg～1350kg, maximum can bearing load 1550kg, the scope of yield force is 2.3kN-6.6kN, and it is good that the linearity after surrender keeps, and range in stiffness is 0.53kN/mm-0.82kN/mm.
Making method:
A certain amount of elastic granule is packed in the string bag, and nothing leakage is placed in shell after tying and weighing, and is placed on special fixture and assembles, and order is followed successively by retaining ring, backing plate, rubber pad, elastic granule and shell from top to bottom.
Carry out the test of its power and displacement, measure its yield force, rigidity, and after surrender, whether linearity is good, thereby elastic granule consumption under different loads is assessed, at frame workshop, by signal acquiring system, vibrate time domain, spectrum measurement, to determine its concrete vibration effective value and vibration maximum value.
Comprehensive above data, determine the reasonable volume of polyurethane particles under different loads intensity, guarantee to maximize the vibration when alleviating frame and working, and enhance productivity.
Experiment test:
(1) carry out polyurethane compression testing, measure the graph of relation of drawing its loading force and compress variation;
Test purpose: measure its elastic performance, whether there is certain linearity, and tentatively guess the adaptation situation of polyurethane under frame working environment;
Test result: refer to shown in Figure 15 and Figure 16, from pressure and displacement relation, can find out, when the power on TPU of being applied to is to a certain extent time, can present linear condition, preliminary guess can adapt to the vibration that under different loads, frame produces, and effectiveness in vibration suppression is good.
(2) at place, frame machine angle, carry out vibration time domain, the spectrum measurement of vibration damper, measure its vibration effective value and vibration maximum value, and observe collection of illustrative plates vibration frequency, actual effectiveness in vibration suppression;
Test purpose: the actual effectiveness in vibration suppression test of TPU vibration damper
1) vibration signals collecting equipment
TST5915 dynamic signal acquisition system
Vibration transducer model: 608A11(Industrial Monitoring Instrumentation, IMI)
2) vibration damper: 4 vibration dampers based on filling polyurethane thing: wherein, two of 1.2kg specifications, two of 1.0kg specifications;
3) tested object
Tm3 type warp knitting machine, wherein on warp knitting machine, the rotating speed of motor is 2200 revs/min.
4) layout of vibration-testing point
In this test, on warp knitting machine, the Z(near vibration damper four under-chassis places is vertical altogether) direction respectively installs a vibration transducer (totally four measuring points), and vibration measuring point layout, refers to shown in Figure 17.
5) experimental procedure:
1, at four pin of warp knitting machine, vibration damper of the present utility model is installed respectively, wherein head bipod is installed respectively a 1.2kg specification vibration damper, and tail bipod is installed respectively a 1.0kg specification vibration damper;
2, on warp knitting machine, the Z(near vibration damper four under-chassis places is vertical respectively) direction respectively installs a vibration transducer;
3, open warp knitting machine, after machine is stable, at four vibration measuring points, carry out data capture (sample frequency: 500Hz, sampling number: 2048 points).
Test result: referring to shown in Figure 18, Figure 19, Figure 20, Figure 21, Figure 22, Figure 23, Figure 24 and Figure 25, is the frequency spectrum time-domain diagram of vibration damper on four measuring points.
Figure 18 is the vibration damper time-domain diagram of the first measuring point 1.0kg specification; Figure 19 is the vibration damper spectrogram of the first measuring point 1.0kg specification;
Figure 20 is the vibration damper time-domain diagram of the second measuring point 1.0kg specification; Figure 21 is the vibration damper spectrogram of the second measuring point 1.0kg specification;
Figure 22 is the vibration damper time-domain diagram of the 3rd measuring point 1.2kg specification; Figure 23 is the vibration damper spectrogram of the 3rd measuring point 1.2kg specification;
Figure 24 is the vibration damper time-domain diagram of the 4th measuring point 1.2kg specification; Figure 25 is the vibration damper spectrogram of the 4th measuring point 1.2kg specification.
Table one is the vibration performance amount of each measuring point
Table one, each measuring point effective value and maximum value (cm/s
2)
| Eigenvalue/ |
1 | 2 | 3 | 4 |
| Effective value | 3.879 | 5.849 | 2.760 | 5.813 |
| Maximum value | 6.919 | 9.615 | 6.992 | 6.797 |
Test result: the frequency structure of four measuring point spectrograms of vibration damper is basically identical, each measuring point performance is good, and effectiveness in vibration suppression is obvious.Frequency of impact appears in half frequency multiplication and frequency multiplication of motor operation power frequency (36.7Hz).
(3) polyurethane of vibration damper, 1.2kg specification that, carries out the pure polyurethane of 1.2kg specification with packing quality than the polyurethane of the vibration damper of 9:1,1.2kg specification with packing quality than the polyurethane of the vibration damper of 8:2 and 1.0kg specification with packing quality than the power of the vibration damper of 8:2 and displacement measurement, curve plotting figure, and measure yield force, rigidity, and after surrender, whether linearity is good.Above-mentioned different proportional quantity modes are contrasted, sum up the damper type of more applicable frame under different loads.
Figure 26 is power and the displacement diagram of the vibration damper of the pure polyurethane of 1.2kg specification; Wherein, the yield force of this vibration damper is about 5.5376kN, and linear good after surrender, and rigidity is about 0.7142kN/mm.
Figure 27 be 1.2kg specification polyurethane with packing quality than the power of the vibration damper of 9:1 and displacement diagram; The yield force of this vibration damper is about 5.0907kN, and after surrender, the good rigidity of linear maintenance is 0.6601kN/mm.
Figure 28 be 1.2kg specification polyurethane with packing quality than the power of the vibration damper of 8:2 and displacement diagram; The yield force of this vibration damper is about 3.7152kN, linear good after surrender, is on average about 0.6439kN/mm.
Figure 29 be 1.0kg specification polyurethane with packing quality than the power of the vibration damper of 8:2 and displacement diagram; The yield force of this vibration damper is about 2.2697kN, linear good after surrender, is on average about 0.5238kN/mm.
Figure 30 is power and the displacement diagram of the vibration damper of the pure polyurethane of 1.35kg specification.1.35kg specification rigidity obviously strengthens, and the power maximum displacement that loads 1.4t only has 11.5147mm, the about 6.5399kN of yield force, and linear good after surrender, rigidity is about 0.8192kN/mm.
Test result: after pure polyurethane and polyurethane mixture power and displacement relation contrast, find that polyurethane mixture is when processing vibrating effect, little many of starting force that need, usage range is wider, actual effectiveness in vibration suppression is better, can formulate the vibration damper of different size load, selectivity variation.
Damper structure based on filling polyurethane thing of the present utility model is simple, by the elastic material of filling tape polyurethane particles in vibration damper shell, overcome interference and destruction that in frame production of machinery, vibration causes the various building motions of system to be subject to, improved manufacturing efficiency and machine service life.
Claims (4)
1. the vibration damper based on filling polyurethane thing, it is characterized in that, comprise shell (1), backing plate (2) and the elastic granule of drum-shaped, described elastic granule comprises polyurethane particles, described elastic granule is arranged in described shell (1), between described elastic granule and the opening of described shell (1), is provided with described backing plate (2).
2. the vibration damper based on filling polyurethane thing as claimed in claim 1, is characterized in that, described elastic granule is arranged in the string bag.
3. the vibration damper based on filling polyurethane thing as claimed in claim 1, it is characterized in that, also comprise rubber pad (3) and retaining ring (4), between described elastic granule and described backing plate (2), be provided with described rubber pad (3), described retaining ring (4) is fixed described backing plate (2) in the enclosure.
4. the vibration damper based on filling polyurethane thing as claimed in claim 1, is characterized in that, also comprises retaining ring (4), and described retaining ring (4) is fixed on described backing plate (2) in the opening of described shell (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320472757.1U CN203585184U (en) | 2013-08-02 | 2013-08-02 | Vibration absorber based on polyurethane fillers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320472757.1U CN203585184U (en) | 2013-08-02 | 2013-08-02 | Vibration absorber based on polyurethane fillers |
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| Publication Number | Publication Date |
|---|---|
| CN203585184U true CN203585184U (en) | 2014-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320472757.1U Expired - Fee Related CN203585184U (en) | 2013-08-02 | 2013-08-02 | Vibration absorber based on polyurethane fillers |
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| CN (1) | CN203585184U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398123A (en) * | 2013-08-02 | 2013-11-20 | 南京龙吟精密科技有限公司 | Vibration absorber based on polyurethane filler |
| CN104101471A (en) * | 2014-07-08 | 2014-10-15 | 中国航空综合技术研究所 | Broadband damping treatment method of vibration test clamp |
-
2013
- 2013-08-02 CN CN201320472757.1U patent/CN203585184U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398123A (en) * | 2013-08-02 | 2013-11-20 | 南京龙吟精密科技有限公司 | Vibration absorber based on polyurethane filler |
| CN104101471A (en) * | 2014-07-08 | 2014-10-15 | 中国航空综合技术研究所 | Broadband damping treatment method of vibration test clamp |
| CN104101471B (en) * | 2014-07-08 | 2016-06-08 | 中国航空综合技术研究所 | The wideband damp treating method of a kind of vibration test fixture |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140507 Termination date: 20160802 |