CN114810932A - Hydraulic inertial container nonlinear energy trap vibration isolation device and working method thereof - Google Patents
Hydraulic inertial container nonlinear energy trap vibration isolation device and working method thereof Download PDFInfo
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- CN114810932A CN114810932A CN202210548048.0A CN202210548048A CN114810932A CN 114810932 A CN114810932 A CN 114810932A CN 202210548048 A CN202210548048 A CN 202210548048A CN 114810932 A CN114810932 A CN 114810932A
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- corrugated pipe
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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
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
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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
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
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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
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/022—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using dampers and springs in combination
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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
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
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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
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/046—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means using combinations of springs of different kinds
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- General Engineering & Computer Science (AREA)
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- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention provides a hydraulic inerter nonlinear energy trap vibration isolation device which comprises a base and a large corrugated pipe arranged on the base, wherein a main mass block is arranged at the upper end of the large corrugated pipe, a small corrugated pipe is arranged in the large corrugated pipe, at least one inertial mass block is arranged on the top of the small corrugated pipe in a sealing mode, a support rod extending downwards to form the small corrugated pipe is arranged in the middle of the lower portion of the inertial mass block, a sliding block capable of moving along the radial direction of the base is arranged on the lower portion of the side of the base, and a rigidity-variable structure used for achieving vibration isolation is arranged between the sliding block and the support rod. The invention has reasonable design and simple structure, solves the problem of realizing broadband vibration absorption by using a small mass ratio by arranging the variable stiffness structure between the inertia mass block and the vibration isolator base, is applied to low-frequency broadband vibration absorption, has convenient parameter adjustment and can stably and reliably work for a long time.
Description
Technical Field
The invention relates to a hydraulic inerter nonlinear energy trap vibration isolation device and a working method thereof.
Background
The vibration problem is widely existed in engineering problems, and most of the vibrations have the vibration characteristics of broadband multi-line spectrum. With the development of vibration theory technology, high-frequency vibration is well solved, and the control of low-frequency multi-line spectrum/broadband vibration still has many problems to be solved. The current vibration control method mainly comprises an active control technology, a semi-active control technology and a passive control technology, wherein the former two technologies need external energy supply, the control algorithm is complex, the size is large, the stability problem exists, and the method is rarely applied in engineering independently. The passive control technology has a simple structure, does not need external energy supply, and has good stability, so the passive control technology is widely applied to engineering. Passive control generally includes damping, absorbing, and isolating vibrations. Damping is short for damping vibration reduction, namely, the vibration of the system is reduced by arranging a damping structure in the system and utilizing a damping energy consumption mode, but the vibration absorption effect of the system at an anti-resonance peak value can be reduced due to the existence of the damping; vibration absorption is generally realized by adding a spring-mass subsystem on an isolated system so as to realize vibration energy transfer of the isolated object, but the method can increase the degree of freedom of the system so as to increase the resonance peak of the system; the vibration isolation is generally realized by connecting a vibration isolation device in series on a vibration transmission path to achieve the aim of vibration reduction, and the method has the main defect that the method cannot ensure that the vibration isolation device bears large static load under the requirement of small deformation. The method has good effect on vibration control, but has not good effect on the problem of low-frequency multi-line spectrum vibration faced by the current engineering, the dynamic anti-resonance structure can realize low-frequency vibration control by using smaller mass due to the introduction of the lever, and the lever can be regarded as an inerter when vibrating with small amplitude. The mechanical lever occupies a large space, and the elastic force and the inertia force acting on the base are different at the same point to generate disturbance torque, so that the hydraulic amplifying device can overcome the defects.
At present, foreign countries have relatively deep research on the aspect, but domestic countries also have many research results on the aspect, and the implementation structure is more diverse. The designed actual structure mostly adopts a hydraulic lever to replace a mechanical lever, so that the space requirement is reduced, and a large lever ratio can be realized; however, the existing passive vibration isolator can only realize single-line spectrum vibration control and cannot realize multi-line spectrum vibration control.
Disclosure of Invention
The invention improves the problems, namely the technical problem to be solved is to provide the hydraulic inertial container nonlinear energy trap vibration isolation device and the working method thereof, the use is convenient, and the vibration absorption is realized by using a small mass ratio and realizing low-frequency broadband vibration attenuation by arranging the nonlinear rigidity device between the inertial mass block and the vibration isolator base.
The vibration isolation device comprises a base and a large corrugated pipe arranged on the base, wherein a main mass block is arranged at the upper end of the large corrugated pipe, a small corrugated pipe is arranged in the large corrugated pipe, an inertia mass block with adjustable mass is hermetically arranged at the top of the small corrugated pipe, a support rod extending downwards to form the small corrugated pipe is arranged in the middle of the lower part of the inertia mass block, a sliding block capable of moving along the radial direction of the base is arranged at the lower part of the side of the base, and a variable-rigidity structure used for realizing vibration isolation is arranged between the sliding block and the support rod.
Further, become rigidity structure including setting up the leaf spring between bracing piece lower part and slider, the bracing piece lower part is equipped with the spread groove, inside leaf spring one end extended to the spread groove, adopt leaf spring bolted connection between the leaf spring other end and the slider.
Further, the rigidity-variable structure comprises a convex ball arranged on the lower side of the supporting rod, a spring sleeve is arranged on the inner side of the sliding block, a spring is arranged in the spring sleeve, and a small ball which is in contact with the convex ball is arranged on one side, close to the convex ball, of the spring.
Further, the rigidity-variable structure comprises a hook arranged at the lower side part of the support rod, a horizontal spring fixing seat is arranged at the inner side of the sliding block, and a horizontal spring is arranged between the horizontal spring fixing seat and the hook; the support column is provided with a vertical spring fixing seat below, and a vertical spring is arranged between the vertical spring fixing seat and the support column.
Furthermore, the large corrugated pipe, the small corrugated pipe, the main mass block, the inertia mass block and the support rod are coaxially arranged.
Furthermore, the main mass block is respectively provided with an oil inlet and an oil outlet, and the oil inlet and the oil outlet are internally provided with one-way valve structures.
Furthermore, a guide rod is arranged on the side of the support rod, a linear bearing is arranged in the middle of the base, and the guide rod is in sliding fit with the linear bearing.
Furthermore, the lower part of the small corrugated pipe is connected with the base through a split flange; an O-shaped sealing ring is arranged between the base and the split flange.
Furthermore, a sealing gasket is arranged between the main mass block and the upper end of the large corrugated pipe, and fastening bolts sequentially penetrate through the main mass block, the upper portion of the large corrugated pipe and the sealing gasket to be connected.
Further, a working method of the hydraulic type inertia container nonlinear energy trap vibration isolation device is characterized in that a closed cavity formed by a large corrugated pipe, a small corrugated pipe, a main mass block and an inertia mass block forms a hydraulic amplification mechanism, when external vibration acts on the main mass block, part of vibration generated by the main mass block is transmitted to a base through the large corrugated pipe, meanwhile, the main mass block drives liquid in the closed cavity to enable the inertia mass block to start to vibrate, inertia force generated by the inertia mass block acts on a vibration isolator base through a supporting rod and a variable stiffness structure, a vibration system formed by the inertia mass block and the variable stiffness structure can generate infinite resonance frequencies, energy transfer can be generated as long as energy reaches a certain threshold value, and vibration isolation at the frequency is achieved.
Compared with the prior art, the invention has the following beneficial effects:
1. because the cross sections of the large corrugated pipe and the small corrugated pipe are different, the vibration absorption can be carried out by using a smaller mass ratio;
2. the small corrugated pipe enables the inertia mass block and the nonlinear rigidity to form a nonlinear energy trap device through a variable rigidity structure at the lower end of the inertia mass block, so that the subsystem has infinite resonance frequencies, and therefore broadband vibration absorption can be achieved.
3. The variable stiffness structure realizes the nonlinear stiffness setting between the inertial mass and the base through the arrangement of a plate spring structure or a convex spherical ball spring structure or a three-spring structure, can be applied to low-frequency broadband vibration reduction, has a simple structure, is convenient for parameter adjustment, and can stably and reliably work for a long time.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a schematic structural diagram according to a second embodiment of the present invention;
FIG. 4 is a cross-sectional view B-B of FIG. 3;
FIG. 5 is a schematic view of a third embodiment of the present invention;
FIG. 6 is a three sectional view of an embodiment of the present invention;
in the figure: 1-base, 101-oil inlet, 102-oil outlet, 2-large bellows, 3-main mass, 4-small bellows, 5-inertial mass, 6-support bar, 7-slide block, 8-guide bar, 9-linear bearing, 10-split flange, 11-O-shaped sealing ring, 12-sealing pad, 13-fastening bolt, 14-plate spring, 15-connecting groove, 16-plate spring bolt, 17-convex ball, 18-spring sleeve, 19-spring, 20-small ball, 21-hook, 22-horizontal spring fixing seat, 23-horizontal spring, 24-vertical spring fixing seat, and 25-vertical spring.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to the attached drawings 1, 2, 3, 4, 5 and 6, the hydraulic inertial container nonlinear energy trap vibration isolation device comprises a base 1 and a large corrugated pipe 2 arranged on the base, wherein a main mass block 3 is arranged at the upper end of the large corrugated pipe, a small corrugated pipe 4 is arranged inside the large corrugated pipe, an inertial mass block 5 with adjustable mass is arranged at the top of the small corrugated pipe in a sealing mode, a support rod 6 extending out of the small corrugated pipe downwards is arranged in the middle of the lower portion of the inertial mass block, a sliding block 7 capable of moving along the radial direction of the base is arranged on the lower portion of the side of the base, and a variable stiffness structure used for achieving vibration isolation is arranged between the sliding block and the support rod.
The inertia mass block can be increased or reduced in number according to the actual engineering requirement; adjacent inertia blocks can be fixed by bolts.
The support rod is connected with the inertia mass block through the bolt, so that different support rods can be replaced according to actual requirements.
The height of the large corrugated pipe is greater than the sum of the height of the small corrugated pipe and the working stroke of the inertia mass block.
In the embodiment, the large corrugated pipe, the small corrugated pipe, the main mass block, the inertia mass block and the support rod are coaxially arranged.
In this embodiment, the main mass block is provided with an oil inlet 101 and an oil outlet 102, and a check valve structure is disposed inside each of the oil inlet and the oil outlet.
In this embodiment, a guide rod 8 is arranged on the side of the support rod, a linear bearing 9 is arranged in the middle of the base, and the guide rod is in sliding fit with the linear bearing; the guide rod and the linear bearing are arranged to realize that the guide rod and the linear bearing only move in the vertical direction.
In the embodiment, the lower part of the small corrugated pipe is connected with the base through a split flange 10; an O-shaped sealing ring 11 is arranged between the base and the split flange.
In this embodiment, a sealing gasket 12 is arranged between the main mass block and the upper end of the large corrugated pipe, and a fastening bolt 13 penetrates through the main mass block, the upper part of the large corrugated pipe and the sealing gasket in sequence to be connected.
In this embodiment, the base is provided with a sliding groove for matching with the sliding block, and the sliding block is provided with a sliding block bolt for fixing the sliding block. The slide block can be moved to any position of the sliding groove according to actual requirements, and then the slide block is fixed on the base through the slide block bolt.
In this embodiment, during operation, the closed cavity that big bellows, little bellows, the main quality piece, inertia mass block constitute forms hydraulic amplification mechanism, when external vibration acted on main quality piece, the vibration that main quality piece produced is partly transmitted to the base through big bellows, liquid in the closed cavity of main quality piece drive makes inertia mass block begin to vibrate simultaneously, inertia force that inertia mass block produced passes through the bracing piece, variable stiffness structure acts on the isolator base, the vibration system that inertia mass block and variable stiffness structure constitute can produce infinite resonant frequency, just can produce energy transfer as long as the energy reaches certain threshold value, realize the vibration isolation of this frequency department.
In one embodiment of the present invention, as shown in fig. 1 and 2, the stiffness varying structure includes a plate spring 14 disposed between a lower portion of the support rod 6 and the slider, the lower portion of the support rod is provided with a connecting groove 15, one end of the plate spring extends into the connecting groove, and for facilitating replacement of the plate spring, the other end of the plate spring is connected to the slider by a plate spring bolt 16.
The lower part of the support rod is provided with a plurality of groups of connecting grooves with different axial dimensions, which are respectively matched with a plurality of groups of plate springs; each set of leaf springs may extend to an intermediate position within the attachment slot.
The radial position of the leaf spring can be adjusted by movement of the slider.
The sliding block is fixed on the base through a sliding block bolt; the plate spring is fixed on the sliding block through a plate spring bolt, and the radial position of the plate spring and the sliding block can be adjusted in the sliding groove of the base, so that the other end of the plate spring is arranged in the middle of the connecting groove of the corresponding supporting rod.
The inertia mass block is arranged at the upper end of the small corrugated pipe and the mass of the inertia mass block is adjusted, the large corrugated pipe and the small corrugated pipe are connected through the separating flange and the O-shaped sealing ring and are fixed on the base through bolts, and the main mass block is connected with the sealing gasket and the large corrugated pipe through fastening bolts; the vibration isolation device comprises a large corrugated pipe, a small corrugated pipe, a main mass block and an inertia mass block, wherein a hydraulic amplification mechanism is formed in a closed cavity formed by the large corrugated pipe, the large corrugated pipe is used as a main rigidity unit of the vibration isolator, the small corrugated pipe and a support rod and a plate spring form a nonlinear rigidity unit, when external vibration acts on the main mass block, one part of vibration of the main mass block is transmitted to a base through the large corrugated pipe, meanwhile, liquid in the closed cavity is driven by the main mass block to enable the inertia mass block to start to vibrate, inertia force generated by the inertia mass block acts on a base of the vibration isolator through the plate spring, the inertia mass block, the support rod and a vibration system formed by the plate spring can generate infinite multiple resonance frequencies, energy transfer can be generated as long as energy reaches a certain threshold value, and vibration isolation at the frequency is realized.
In the second embodiment of the present invention, as shown in fig. 3 and 4, the stiffness varying structure includes a convex ball 17 disposed at the lower side of the support rod 6, a spring sleeve 18 is disposed inside the slider, a spring 19 is disposed inside the spring sleeve, and a small ball 20 contacting the convex ball is disposed at one side of the spring close to the convex ball.
When external vibration acts on the main mass block, part of vibration of the main mass block is transmitted to the base through the large corrugated pipe, meanwhile, the main mass block drives liquid in the closed cavity to enable the inertia mass block to start vibrating, inertia force generated by the inertia mass block passes through the convex ball, the small ball and the spring acts on the vibration isolator base, the inertia mass block, the supporting rod, the convex ball, the small ball and a vibration system formed by the spring can generate infinite multiple resonance frequencies, energy transfer can be generated as long as the energy reaches a certain threshold value, and vibration isolation at the frequency is achieved.
In the third embodiment of the present invention, as shown in fig. 5 and 6, the stiffness varying structure includes a hook 21 disposed at the lower side of the support rod, a horizontal spring fixing seat 22 is disposed at the inner side of the slider, and a horizontal spring 23 is disposed between the horizontal spring fixing seat and the hook; a vertical spring fixing seat 24 is arranged below the supporting column, and a vertical spring 25 is arranged between the vertical spring fixing seat and the supporting column.
When external vibration acts on the main mass block, part of vibration of the main mass block is transmitted to the base through the large corrugated pipe, meanwhile, the main mass block drives liquid in the closed cavity to enable the inertia mass block to start vibrating, inertia force generated by the inertia mass block passes through the horizontal spring, the vertical spring acts on the vibration isolator base, the inertia mass block, the supporting rod, the horizontal spring and a vibration system formed by the vertical spring can generate infinite resonance frequency, energy transfer can be generated as long as energy reaches a certain threshold value, and vibration isolation of the frequency is achieved.
If the invention described above discloses or relates to parts or structures which are fixedly connected to each other, the fixedly connected connection can be understood as follows, unless otherwise stated: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).
In addition, terms used in any technical solutions disclosed in the present invention to indicate positional relationships or shapes include approximate, similar or approximate states or shapes unless otherwise stated.
Any part provided by the invention can be assembled by a plurality of independent components, or can be manufactured by an integral forming process.
Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present invention and not to limit the same; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the invention, it is intended to cover all modifications within the scope of the invention as claimed.
Claims (10)
1. The utility model provides a fluid pressure type is used to container nonlinear energy trap vibration isolation mounting, its characterized in that, includes the base and sets up the big bellows on the base, big bellows upper end is equipped with the main mass piece, big bellows inside is provided with little bellows, the sealed inertial mass piece that is equipped with adjustable quality in little bellows top, inertial mass piece below middle part is provided with the bracing piece that extends little bellows downwards, base side lower part is provided with the slider that can follow base radial movement, be provided with the variable stiffness structure that is used for realizing vibration isolation between slider and the bracing piece.
2. The vibration isolation device for the nonlinear energy trap of the hydraulic inerter of claim 1, wherein the variable stiffness structure comprises a plate spring arranged between a lower portion of the support rod and the sliding block, the lower portion of the support rod is provided with a connecting groove, one end of the plate spring extends into the connecting groove, and the other end of the plate spring is connected with the sliding block through a plate spring bolt.
3. The non-linear energy trap vibration isolator of hydraulic inerter according to claim 1, wherein the stiffness varying structure comprises a convex ball disposed at the lower side of the support rod, a spring sleeve is disposed inside the sliding block, a spring is disposed inside the spring sleeve, and a small ball disposed at a side of the spring close to the convex ball is used to contact the convex ball.
4. The non-linear energy trap vibration isolation device of a hydraulic inerter according to claim 1, wherein the stiffness varying structure comprises a hook arranged at the lower side of the support rod, a horizontal spring fixing seat is arranged inside the sliding block, and a horizontal spring is arranged between the horizontal spring fixing seat and the hook; the support column is provided with a vertical spring fixing seat below, and a vertical spring is arranged between the vertical spring fixing seat and the support column.
5. The vibration isolation device for the nonlinear energy trap of the hydraulic inerter of claim 1, wherein the large bellows, the small bellows, the main mass, the inertial mass and the support rod are coaxially arranged.
6. The vibration isolation device for the nonlinear energy trap of the hydraulic inerter according to claim 1, wherein the main mass block is provided with an oil inlet and an oil outlet, and a one-way valve structure is arranged inside each of the oil inlet and the oil outlet.
7. The vibration isolation device for the nonlinear energy trap of the hydraulic inerter according to claim 1, wherein a guide rod is arranged on the side of the support rod, a linear bearing is arranged in the middle of the base, and the guide rod is in sliding fit with the linear bearing.
8. The nonlinear energy trap vibration isolation device of a hydraulic inerter of claim 1, wherein the lower part of the small bellows is connected with the base through a split flange; an O-shaped sealing ring is arranged between the base and the split flange.
9. The vibration isolation device for the nonlinear energy trap of the hydraulic inerter according to claim 1, wherein a sealing gasket is arranged between the main mass block and the upper end of the large corrugated pipe, and the fastening bolt sequentially penetrates through the main mass block, the upper part of the large corrugated pipe and the sealing gasket to be connected.
10. An operating method of the hydraulic inerter nonlinear energy trap vibration isolation device according to any one of claims 1-9, wherein a closed cavity formed by a large corrugated pipe, a small corrugated pipe, a main mass block and an inertia mass block forms a hydraulic amplifying mechanism, when external vibration acts on the main mass block, a part of vibration generated by the main mass block is transmitted to a base through the large corrugated pipe, meanwhile, the main mass block drives liquid in the closed cavity to enable the inertia mass block to start vibration, inertia force generated by the inertia mass block acts on a vibration isolator base through a variable stiffness structure, a vibration system formed by the inertia mass block and the variable stiffness structure can generate infinite resonance frequencies, energy transfer can be generated as long as energy reaches a certain threshold value, and vibration isolation at the frequency is achieved.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210548048.0A CN114810932B (en) | 2022-05-20 | 2022-05-20 | Hydraulic inertial container nonlinear energy trap vibration isolation device and working method thereof |
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| CN202210548048.0A CN114810932B (en) | 2022-05-20 | 2022-05-20 | Hydraulic inertial container nonlinear energy trap vibration isolation device and working method thereof |
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| CN114810932B CN114810932B (en) | 2023-03-14 |
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| CN111395846A (en) * | 2020-05-08 | 2020-07-10 | 东南大学 | Damping-adjustable energy trap device of magnetorheological damper |
| CN114382818A (en) * | 2022-01-25 | 2022-04-22 | 上海交通大学 | Vibration-suppressing hydro-electric hybrid actuator and control method thereof |
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2022
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|---|---|---|---|---|
| CN103047332A (en) * | 2012-12-31 | 2013-04-17 | 南京航空航天大学 | Vibration control device with vibration isolation and absorption functions |
| FR3025787A1 (en) * | 2014-09-16 | 2016-03-18 | IFP Energies Nouvelles | SYSTEM FOR MONITORING THE MOVEMENT OF A LOAD |
| CN107654566A (en) * | 2017-08-07 | 2018-02-02 | 上海交通大学 | The liquid bullet formula isolation mounting of Parameter adjustable |
| CN107939898A (en) * | 2017-11-30 | 2018-04-20 | 南京航空航天大学 | A kind of bellows-type buffer |
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| CN114810932B (en) | 2023-03-14 |
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