CN87100223A - Prestressed damping spring vibration-reducing apparatus - Google Patents
Prestressed damping spring vibration-reducing apparatus Download PDFInfo
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- CN87100223A CN87100223A CN87100223.XA CN87100223A CN87100223A CN 87100223 A CN87100223 A CN 87100223A CN 87100223 A CN87100223 A CN 87100223A CN 87100223 A CN87100223 A CN 87100223A
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Abstract
The present invention relates to a kind of prestressed damping spring vibration-reducing apparatus, it mainly by the spring of preloading, reaches the damping layer of doing up under the compressed state of spring, and makes spring keep the prestress holding device of this pressured state to form.Because can not being sandwiched between spring thread, do not cut off on this kind structural damping layer, thus have good and lasting damping function, thereby this vibration damping equipment has stable and lasting effectiveness in vibration suppression.
Description
The present invention relates to the employed vibration damping equipment of equipment such as vibration damper that vibration isolation is used.
Present existing vibration damping equipment has multiple, and metal coil spring vibration damping equipment wherein can be subjected to big load, and natural frequency is lower, and thermal adaptability is better, and is therefore, applied widely, the life-span is long.But the damping of helical spring vibration damping equipment is little, and its damping ratio is only below 0.008, so free vibration is very long decay time; Flutter easily takes place, and carries out the vibration damping poor stability with it; Amplitude increases sharply when particularly resonance taking place.Therefore, vibration-isolating effect is not ideal enough.Be to eliminate the above-mentioned shortcoming of spring damper, people have developed the vibration damping equipment that various damping materials and spring assembly form, and a kind of damping spring vibration-reducing apparatus wherein mainly is made of helical spring and the damping layer that wraps in outside the spring.Because that the structure of damping material is set than in the spring inboard is more reliable for the effect that combines of the damping material of this structure and spring, so, it has not only kept the advantage of metal coil spring vibration damping equipment, eliminated above-mentioned shortcoming again, especially damping improves greatly, even compare with other damping spring vibration-reducing apparatus, its free vibration is also shorter decay time.But; because the damping layer of this kind damping spring be in free state at spring, be to be wrapped in the spring periphery under the bigger situation of the spacing of Spring Steel Wire; and; this damping layer adds rubber cement by super glass wool and makes; because glass wool has the fragility easy-rupturing; the interior outside of damping layer is the unprotect layer again; be directly to wrap on the spring; therefore; when helical spring is compressed by load; the fiber of this glass wool is very easily sandwiched between the Spring Steel Wire in the crack, and is subjected to shear action and breaking releasing when spring is subjected to the load vibration.Therefore, this damping spring vibration-reducing apparatus in use, its damping function can reduce gradually so that forfeiture causes its free vibration to increase gradually decay time, so that near decay time of metal spring vibration damping equipment.And the rubber cement in the damping layer is oil resistant not, thus can not refuel in the damping layer, and the easy moisture absorption of glass wool, the damping layer that makes moist is close on the spring thread, the working life of shortening spring thereby spring thread gets rusty easily.
The objective of the invention is to, the advantage that keeps above-mentioned damping spring vibration-reducing apparatus, eliminate above-mentioned shortcoming, provide that a kind of damping material is unlikely to be sandwiched between the spring thread, can do not cut off yet and be come off, can keep good damping function for a long time, thereby the damping spring vibration-reducing apparatus of well stable and lasting vibration isolating effect is arranged.
The prestressed damping spring vibration-reducing apparatus of vibration damper provided by the invention etc., comprise helical spring and the damping layer that wraps in this spring outside, the present invention is by being provided with above-mentioned damping layer under the compressed state of above-mentioned helical spring pressurized, and the pre-pressure retaining device that makes this helical spring keep pressured state is set, and achieve the above object.
Prestressed damping spring vibration-reducing apparatus provided by the invention, because its damping layer be helical spring be compressed spring thread between be provided with under the less state in gap, and be provided with the pre-pressure retaining device that makes spring keep pressured state, therefore, damping layer can not sandwiched between the spring, and its fiber can not cut off to come off, after long-term the use, still can keep good damping function, therefore, the vibration isolating effect of this prestressed damping spring vibration-reducing apparatus is stable, remarkable and lasting.
Below in conjunction with accompanying drawing the present invention and effect thereof are further described.
In the accompanying drawing, Fig. 1 is according to a kind of prestressed damping spring vibration-reducing apparatus schematic representation of the invention process, makes spring keep the prestressing force holder of pressured state in Fig. 2 pictorial image 1, and Fig. 3 illustrates according to another kind of damping spring vibration-reducing apparatus of the invention process.
Embodiment 1
Fig. 1 illustrates a kind of prestressed damping spring vibration-reducing apparatus provided by the invention.Among Fig. 1,9 is helical spring, and 12 is the cotton shape felt as damping material, and 11 and 13 are respectively the wire gaze that is coated on the outside in this cotton shape felt, shields, and 10 for making helical spring keep the prestressing force holder of confined state.Dotted line shows the position when helical spring is in free state among the figure.After the spring of free state is subjected to the effect of power shown in the p among the figure, spring is compressed to shown in the solid line behind the position, the damping layer that is made of above-mentioned cotton shape felt and wire netting is set again and along circumference three above-mentioned prestressing force holders 10 is set evenly, wherein, inhaling in the cotton shape felt has oil.Because damping layer does up after spring is compressed, and damping material has the layer of maintenance, do not cut off so damping material can not sandwich between spring thread, again because damping material contains oil, spring thread is difficult for corrosion, so this device has good stable and lasting vibration isolating effect.
In the present embodiment, make prestressing force holder 10 that spring keeps pressured state as shown in Figure 2, be made of Steel Wire Strand 14 and the metal grasp that is located at the Steel Wire Strand two ends, this grasp hooks helical spring two ends, stops the spring state that affranchises.This kind prestressing force holder must be provided with two at least.Steel Wire Strand wherein also can change the soft rope of other inductility into.
Fig. 3 is the schematic representation by the vibration damper that constitutes according to another kind of prestressed damping spring vibration-reducing apparatus of the invention process.As shown in Figure 3, be provided with upper gasket 1 on the loam cake 2 of this vibration damper, be provided with lower gasket 8 under the base 7, be provided with middle washer 5 on the inner ring flange of base 7, base 7 outer circumference are provided with the middle hoop 6 of horizontal displacement of restriction loam cake 2, and its groundwork partly is that the lower end position of prestressing force damping spring device 3 is by basic fixed position.This prestressing force damping spring device 3 is with shown in Figure 1 basic identical, its damping layer also is provided with under the compressed state of helical spring, just, it does not possess prestressing force holder shown in Figure 2, its pressure is that prestressed maintenance is by on being pressed on, the above-mentioned loam cake 2 at following two ends, base 7, and be located at vibration damper central authorities, the bolt 4 that connects this loam cake 2 and base 7 is realized with nut (mark), therefore, this loam cake 2, base 7 and their link (being bolt and nut in the present embodiment) are formed the prestress holding device of this prestressing force damping spring device 3.
In the present embodiment, only be provided with a prestressed damping spring vibration-reducing apparatus 3 in the vibration damper, but also can be provided with more than 2 or 2, these a plurality of damping spring vibration-reducing apparatus can be along the circumference uniform distribution of vibration damper, also can inside and outside nestable setting, decide on the requirements and potentialities of vibration damping load.
Helical spring material of the present invention can be a spring steel, also can be stainless steel, alloyed steel etc.
In the foregoing description, damping material is cotton shape felt, specifically can be oil resistant such as cotton shape plastics or cotton shape wool felt and cotton shape body that can oil suction.
Again, in the foregoing description, the protective layer of damping material is a wire gaze, but also can be other reticular body such as nylon wire, even also can be other protective layers of thin cloth and so on.
Again, the bolt and nut among the embodiment 4 also can change other link such as rivet into.
Claims (7)
1, a kind of prestressing force damping spring device, comprise helical spring and the damping layer that wraps in this spring outside, it is characterized in that, above-mentioned helical spring is the helical spring of preloading, above-mentioned damping layer is done up after spring is compressed, and this device also is provided with the pre-pressure retaining device that makes this helical spring keep pressured state.
2, by the described prestressing force damping spring device of claim 1, it is characterized by, above-mentioned damping layer comprises cotton shape damping material and is coated on the two-layer protective layer of these cotton shape damping material medial and lateral.
3, by claim 1 or 2 described prestressing force damping spring devices, it is characterized by, the damping material of above-mentioned damping layer is the cotton shape felt body that oil resistant and suction have oil.
4, by the described prestressing force damping spring device of claim 2, it is characterized by, above-mentioned protective layer is a reticular body.
5, by the described prestressing force damping spring device of claim 4, it is characterized by, above-mentioned reticular body is a wire netting.
6, by the described prestressing force damping spring device of claim 1, it is characterized by, the pre-pressure retaining device of above-mentioned spring comprises by the soft rope of inductility and is located at these soft rope two ends and hooks the grasp at above-mentioned compression spring two ends.
7, by the described prestressing force damping spring device of claim 1, it is characterized by, the pre-pressure retaining device of above-mentioned spring comprises the upper and lower cover at pressing spring two ends respectively and connects this upper and lower cover and make spring keep the link of pressured state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN87100223.XA CN1005745B (en) | 1987-02-07 | 1987-02-07 | Prestressed damping spring vibration-reducing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN87100223.XA CN1005745B (en) | 1987-02-07 | 1987-02-07 | Prestressed damping spring vibration-reducing apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN87100223A true CN87100223A (en) | 1987-08-12 |
| CN1005745B CN1005745B (en) | 1989-11-08 |
Family
ID=4812766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN87100223.XA Expired CN1005745B (en) | 1987-02-07 | 1987-02-07 | Prestressed damping spring vibration-reducing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1005745B (en) |
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-
1987
- 1987-02-07 CN CN87100223.XA patent/CN1005745B/en not_active Expired
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| CN106567587A (en) * | 2016-10-17 | 2017-04-19 | 南京大德减震科技有限公司 | Three-dimensional shock isolation device adjustable in vertical initial stiffness |
| CN106567589A (en) * | 2016-10-17 | 2017-04-19 | 南京大德减震科技有限公司 | Rubber damper capable of adjusting initial stiffness |
| CN106593053A (en) * | 2016-10-17 | 2017-04-26 | 南京大德减震科技有限公司 | Three-dimensional vibration isolation support seat capable of presetting vertical initial rigidity |
| CN106639023A (en) * | 2016-10-17 | 2017-05-10 | 南京大德减震科技有限公司 | Three-dimensional shock isolation device with adjustable initial vertical rigidity |
| CN106499246B (en) * | 2016-10-17 | 2020-11-10 | 安徽信泽科技有限公司 | Three-dimensional shock isolation device with adjustable vertical early rigidity |
| CN106499245B (en) * | 2016-10-17 | 2020-11-13 | 安徽信泽科技有限公司 | Three-dimensional shock isolation device capable of adjusting vertical early rigidity |
| CN106499244B (en) * | 2016-10-17 | 2020-11-13 | 安徽信泽科技有限公司 | Three-dimensional shock isolation device with adjustable vertical early rigidity |
| CN106639458A (en) * | 2016-10-24 | 2017-05-10 | 南京大德减震科技有限公司 | Three-dimensional vibration-isolation supporting seat |
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| Publication number | Publication date |
|---|---|
| CN1005745B (en) | 1989-11-08 |
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