CN104006107A - Negative-pressure air rubber composite vibration isolator and vibration isolation method thereof - Google Patents
Negative-pressure air rubber composite vibration isolator and vibration isolation method thereof Download PDFInfo
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- CN104006107A CN104006107A CN201410163789.2A CN201410163789A CN104006107A CN 104006107 A CN104006107 A CN 104006107A CN 201410163789 A CN201410163789 A CN 201410163789A CN 104006107 A CN104006107 A CN 104006107A
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- negative pressure
- pressure air
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Abstract
The invention relates to a negative-pressure air rubber composite vibration isolator and a vibration isolation method thereof and belongs to the field of mechanical vibration isolators. The composite vibration isolator comprises an upper base, a lower base, a first connection rod, a second connection rod and a negative-pressure air rubber composite spring. The upper base is connected with the first connection rod, and the lower base is connected with the second connection rod, and the negative-pressure air rubber composite spring is fixed between the first connection rod and the second connection rod through bolts and nuts. Air in a negative pressure state is filled in a cavity of the negative-pressure air rubber composite spring, the rigidity is mainly dependent on the negative pressure in the cavity nearby the balance position, and as the rigidity tends towards zero along with the increasing of the negative pressure, when the negative pressure exceeds 0.07 Mpa, low rigidity can be obtained, the low inherent frequency is further obtained, and the low-frequency vibration isolation performance is improved; when the deformation is too large, the rigidity of the rubber casing is increased rapidly, too large offset cannot be produced by the system, and the system anti-impact performance is improved.
Description
Technical field:
The invention belongs to mechanical vibration vibration isolator field, utilize specifically the parallel connection of negative pressure air spring and rubber elastic element, to the effectively negative pressure air rubber composite vibration isolator of isolation of low-frequency vibration.
Background technique
The application of vibration isolated controlling technology is very extensive, along with the fast development of each scientific and technological engineering field, isolation low-frequency vibration has been proposed to more and more higher requirement.Researcher for mechanical vibration isolation technology is more, wherein two kinds of representative technological methods are as follows: one is pneumatic spring (Zhang Liguo etc., the present situation of pneumatic spring and development thereof, vibration and impact, 2007,26 (2)), because it has advantages of that natural frequency is low, low frequency vibration isolation is effective, in modern comfort vibration isolation, more and more applied, but existing pneumatic spring is all malleation form, its shortcoming is that system complex, installation conditions are limited, especially on mini-plant, uses and has certain difficulty.Another kind is accurate zero stiffness vibration isolation technique (Zhang Jianzhuo etc., New Type Vibration Isolation System research based on positive and negative Stiffness, nanometer technology and precision engineering, 2004,2 (4)), it has higher support stiffness, solve stability problem, there is again extremely low motion rigidity, realize low frequency vibration isolation, vibration and impact are had to very good isolating power simultaneously.But this type of vibration isolator is unidirectional vibration isolation mostly at present, can only isolate vibration in one direction, and structure to be all comparatively complicated, this makes it be subject in actual applications certain restriction.
Summary of the invention
The present invention is exactly the vibration problem producing for machinery, provides a kind of to mechanical vibration, and particularly method and the negative pressure air rubber composite vibration isolator of effectively isolation carried out in low-frequency vibration.
Negative pressure air rubber composite vibration isolator of the present invention is made up of upper bed-plate, lower bottom base, head rod, the second connecting rod and negative pressure air rubber-spring complex.Upper bed-plate connects head rod, and lower bottom base connects the second connecting rod, between head rod and the second connecting rod, fixes negative pressure air rubber spring by screw bolt and nut.
Described negative pressure air rubber composite vibration isolator, can be made into two kinds of structures of a formula and hanging.
Described negative pressure air rubber composite vibration isolator, negative pressure air rubber-spring complex is made up of sealing shell and inner negative pressure air thereof.
The vibration isolating method of negative pressure air rubber composite vibration isolator, to adopt negative pressure air rubber-spring complex, make with metal-rubber or the nylon rubber material of tensile strength the discoid sealing shell that a cross section is dumbbell-like shape, its internal cavities is the air in negative pressure state, near equilibrium position, its rigidity depends primarily on the negative pressure in cavity, because rigidity is along with the increase of negative pressure goes to zero gradually, in the time that negative pressure exceedes 0.07Mpa, can obtain very low rigidity, and then obtain very low natural frequency, improve the isolation performance to low-frequency vibration; In the time that distortion is excessive, the rigidity of rubbery outer cover increases rapidly, therefore can not make system produce excessive skew, improves the shock resistance of system.
Beneficial effect: overcome positive pressure air spring system complexity, the limited shortcoming of installation conditions, easy to use, be specially adapted to mini-plant; Near the motion rigidity of vibrating isolation system equilibrium position, close to zero, improves the low frequency vibration isolation efficiency of system in ensureing system lateral stability and impact resistance; Negative pressure air rubber-spring complex used adopts metal-rubber or nylon rubber material to make, and has high temperature resistant, oil resistant, long feature of life-span.
Brief description of the drawings
Fig. 1 is a formula negative pressure air rubber composite vibration isolator
Fig. 2 is hanging negative pressure air rubber composite vibration isolator
Shown in figure: 1, upper bed-plate; 2, head rod; 3, the second connecting rod; 4, lower bottom base; 5, bolt; 6, nut; 7, negative pressure air rubber spring; 8, shell; 9, negative pressure air
Embodiment
The present invention is by reference to the accompanying drawings 1, accompanying drawing 2 is described further:
Specific embodiment 1: seat formula negative pressure air rubber composite vibration isolator; Upper bed-plate 1 connects head rod 2, and lower bottom base 4 connects the second connecting rod 3, and between head rod 2 and the second connecting rod 3, part is staggered, and the position between staggered is fixed negative pressure air rubber spring by bolt 5 and nut 6.
Specific embodiment 2: hanging negative pressure air rubber composite vibration isolator, upper bed-plate 1 connects head rod 2, lower bottom base 4 connects the second connecting rod 3, between head rod 2 and the second connecting rod 3, leave certain spatial position, negative pressure air rubber spring is fixed by bolt 5 and nut 6 in spatial position.
Negative pressure air rubber-spring complex is made up of sealing shell 8 and inner negative pressure air 7 thereof.
The vibration isolating method of negative pressure air rubber composite vibration isolator, to adopt negative pressure air rubber spring, make with metal-rubber or the nylon rubber material of tensile strength the discoid sealing shell 8 that a cross section is dumbbell-like shape, its internal cavities is the negative pressure air 7 in negative pressure state, near equilibrium position, its rigidity depends primarily on the negative pressure in cavity, because rigidity is along with the increase of negative pressure goes to zero gradually, in the time that negative pressure exceedes 0.07Mpa, can obtain very low rigidity, and then obtain very low natural frequency, improve the isolation performance to low-frequency vibration; In the time that distortion is excessive, the rigidity of rubbery outer cover increases rapidly, therefore can not make system produce excessive skew, improves the shock resistance of system.
Claims (4)
1. negative pressure air rubber composite vibration isolator is made up of upper bed-plate (1), lower bottom base (4), head rod (2), the second connecting rod (3) and negative pressure air rubber-spring complex, it is characterized in that: upper bed-plate (1) connects head rod (2), lower bottom base (4) connects the second connecting rod (3), between head rod (2) and the second connecting rod (3), fixes negative pressure air rubber spring by bolt (5) and nut (6).
2. negative pressure air rubber composite vibration isolator according to claim 1, is characterized in that: can be made into two kinds of structures of a formula and hanging.
3. negative pressure air rubber composite vibration isolator according to claim 1, is characterized in that: negative pressure air rubber-spring complex is made up of sealing shell (8) and inner negative pressure air (7) thereof.
4. the vibration isolating method of negative pressure air rubber composite vibration isolator, it is characterized in that: be to adopt negative pressure air rubber spring, make with metal-rubber or the nylon rubber material of tensile strength the discoid sealing shell (8) that a cross section is dumbbell-like shape, its internal cavities is the negative pressure air (7) in negative pressure state, near equilibrium position, its rigidity depends primarily on the negative pressure in cavity, because rigidity is along with the increase of negative pressure goes to zero gradually, in the time that negative pressure exceedes 0.07Mpa, can obtain very low rigidity, and then the very low natural frequency of acquisition, improve the isolation performance to low-frequency vibration, in the time that distortion is excessive, the rigidity of rubbery outer cover increases rapidly, therefore can not make system produce excessive skew, improves the shock resistance of system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410163789.2A CN104006107B (en) | 2014-04-21 | 2014-04-21 | Negative pressure air rubber composite vibration isolator and vibration isolating method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410163789.2A CN104006107B (en) | 2014-04-21 | 2014-04-21 | Negative pressure air rubber composite vibration isolator and vibration isolating method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104006107A true CN104006107A (en) | 2014-08-27 |
| CN104006107B CN104006107B (en) | 2016-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410163789.2A Expired - Fee Related CN104006107B (en) | 2014-04-21 | 2014-04-21 | Negative pressure air rubber composite vibration isolator and vibration isolating method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09170636A (en) * | 1995-12-19 | 1997-06-30 | Hokushin Ind Inc | Air damper |
| CN1510318A (en) * | 2002-11-28 | 2004-07-07 | �ٲ�� �ҵ��ʽ���� | Vibrating separating tables |
| CN201772009U (en) * | 2010-06-01 | 2011-03-23 | 史喜婷 | Isolating device |
| CN102182779A (en) * | 2011-03-23 | 2011-09-14 | 常熟市伟成非织造成套设备有限公司 | Vibration-absorbing device of needling machine |
| CN203926560U (en) * | 2014-04-21 | 2014-11-05 | 大连大学 | A kind of negative pressure air rubber composite vibration isolator |
-
2014
- 2014-04-21 CN CN201410163789.2A patent/CN104006107B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09170636A (en) * | 1995-12-19 | 1997-06-30 | Hokushin Ind Inc | Air damper |
| CN1510318A (en) * | 2002-11-28 | 2004-07-07 | �ٲ�� �ҵ��ʽ���� | Vibrating separating tables |
| CN201772009U (en) * | 2010-06-01 | 2011-03-23 | 史喜婷 | Isolating device |
| CN102182779A (en) * | 2011-03-23 | 2011-09-14 | 常熟市伟成非织造成套设备有限公司 | Vibration-absorbing device of needling machine |
| CN203926560U (en) * | 2014-04-21 | 2014-11-05 | 大连大学 | A kind of negative pressure air rubber composite vibration isolator |
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| Publication number | Publication date |
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| CN104006107B (en) | 2016-08-31 |
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Granted publication date: 20160831 |