CN211259458U - Semi-active vibration isolation system - Google Patents
Semi-active vibration isolation system Download PDFInfo
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- CN211259458U CN211259458U CN201922360203.2U CN201922360203U CN211259458U CN 211259458 U CN211259458 U CN 211259458U CN 201922360203 U CN201922360203 U CN 201922360203U CN 211259458 U CN211259458 U CN 211259458U
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- 238000002955 isolation Methods 0.000 title claims abstract description 49
- 238000013016 damping Methods 0.000 claims description 8
- 230000005284 excitation Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 238000000518 rheometry Methods 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000033772 system development Effects 0.000 description 1
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Abstract
The utility model belongs to the field of vibration isolation, in particular to a semi-active vibration isolation system, which comprises an upper bearing plate, a spring guide rail, a foundation plate, a rubber vibration isolator, a middle bearing plate and a magneto-rheological damper, wherein the middle bearing plate is positioned between the upper bearing plate and the foundation plate, and the rubber vibration isolator is arranged between the middle bearing plate and the foundation plate; the upper bearing plate is arranged on the middle bearing plate through a magneto-rheological damper and a spring guide rail, the spring guide rail and the magneto-rheological damper are arranged in parallel, and equipment needing vibration isolation is arranged on the upper bearing plate. The utility model discloses can adapt to the complicated multifrequency vibration under the complex environment, simple structure, the vibration isolation frequency bandwidth, bearing capacity is strong, and control is accurate, is suitable for more complicated vibration isolation environment.
Description
Technical Field
The utility model belongs to the vibration isolation field, specifically speaking are semi-initiative vibration isolation system.
Background
With the development of noise monitoring technology, it is increasingly important to improve the stealth of naval vessels (especially submarines) in a vibration isolation manner. Many vibration isolation systems for naval vessels and ships are researched and developed at home and abroad, but the vibration isolation systems cannot better solve broadband vibration; this limits the development of stealth in naval vessels and greatly limits the pace of exploration from offshore defenses to open sea.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that the wide band vibration can not be reduced in the current vibration isolation system and restrict the stealthy development of naval vessels and ships, the utility model aims to provide a semi-active vibration isolation system. The semi-active vibration isolation system has the characteristics of wide vibration isolation frequency band and large amplitude, and can adapt to a more complex vibration environment compared with the existing passive vibration isolation system.
The purpose of the utility model is realized through the following technical scheme:
the utility model comprises an upper bearing plate, a spring guide rail, a foundation plate, a rubber vibration isolator, a middle bearing plate and a magneto-rheological damper, wherein the middle bearing plate is positioned between the upper bearing plate and the foundation plate, and the rubber vibration isolator is arranged between the middle bearing plate and the foundation plate; the upper bearing plate is arranged on the middle bearing plate through a magneto-rheological damper and a spring guide rail, the spring guide rail and the magneto-rheological damper are arranged in parallel, and equipment needing vibration isolation is arranged on the upper bearing plate.
Wherein: a sensor for detecting the vibration of equipment needing vibration isolation is arranged on the upper bearing plate and is connected with a control system; the control system is connected with the magnetorheological damper and adapts to multi-frequency vibration by changing the damping coefficient of the magnetorheological damper.
The spring guide rail comprises a guide shaft, a spring and a linear bearing, one end of the guide shaft is connected with the upper bearing plate, the linear bearing is arranged on the middle bearing plate, and the other end of the guide shaft is connected with the linear bearing in a sliding manner to form a linear pair; the spring is sleeved on the guide shaft and the linear bearing, and two ends of the spring are respectively abutted to the upper layer bearing plate and the middle bearing plate.
The lower surface of the upper bearing plate is provided with a positioning device, the lower surface of the positioning device and the linear bearing are respectively and fixedly connected with a gasket, the two gaskets are parallel to each other, and two ends of the spring are respectively abutted against the two gaskets.
The positioning device comprises a positioning disc and a fastening bolt, the positioning disc is fixedly connected to the lower surface of the upper bearing plate, and one end of the guide shaft is inserted into the positioning disc and fixed with the positioning disc through the fastening bolt.
And a through hole for the guide shaft to pass through is formed in the position, corresponding to the guide shaft, of the middle bearing plate.
The magnetorheological damper comprises a rheological cylinder and a rheological rod, wherein one end of the rheological cylinder and one end of the rheological rod are respectively provided with a connecting ring, and one end of the rheological rod is positioned in the rheological cylinder and is in sliding connection with the rheological cylinder; the rheological cylinder is filled with magnetorheological liquid.
Lifting lugs are mounted on the lower surface of the upper bearing plate and the upper surface of the middle bearing plate, the connecting ring at one end of the rheological rod is hinged to the lifting lugs on the upper bearing plate through a pin shaft, and the connecting ring at one end of the rheological cylinder is hinged to the lifting lugs on the middle bearing plate through a pin shaft.
The magneto-rheological damper is connected with a control system, and the control system adjusts the damping coefficient of the magneto-rheological damper by changing input voltage so as to adapt to excitation sources with different frequencies.
The lower surface of the middle bearing plate and the upper surface of the foundation plate are respectively provided with a positioning groove, and the rubber vibration isolator is arranged in the positioning groove through a bolt; the upper bearing plate is provided with a mounting hole for mounting equipment needing vibration isolation; and the foundation plate is provided with a mounting hole for fixing the whole semi-active vibration isolation system.
The utility model discloses an advantage does with positive effect:
1. the utility model discloses simple structure, the vibration isolation frequency band is wide, and bearing capacity is strong, and control is accurate, is suitable for more complicated vibration isolation environment.
2. The utility model discloses a parallel connection's mode improves system's bulk rigidity greatly, improves system reliability.
3. The utility model discloses break the limitation of passive vibration isolation, make the vibration isolation system development direction broader.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic structural view of the spring guide rail of the present invention;
FIG. 3 is a schematic structural view of the magnetorheological damper of the present invention;
FIG. 4 is a schematic structural view of the spring rail of the present invention connected to the upper loading plate and the middle loading plate;
FIG. 5 is a schematic structural view of the magnetorheological damper of the present invention connected to the upper bearing plate and the middle bearing plate;
wherein: 1 is upper loading board, 2 is the lug, 3 is positioner, 4 is the guiding axle, 5 is the spring, 6 is linear bearing, 7 is the packing ring, 8 is the foundatin plate, 9 is rubber vibration isolator, 10 is the bolt, 11 is middle loading board, 12 is the round pin axle, 13 is the rheology jar, 14 is the rheology pole, 15 is the go-between, 16 is tight set bolt, 17 is the positioning disk.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, the utility model comprises an upper bearing plate 1, a spring guide rail, a foundation plate 8, a rubber vibration isolator 9, a middle bearing plate 11, a magneto-rheological damper and a control system, wherein the middle bearing plate 11 is positioned between the upper bearing plate 1 and the foundation plate 8, and the rubber vibration isolator 9 is installed between the middle bearing plate 11 and the foundation plate 8 through bolts; the upper bearing plate 1 is installed on the middle bearing plate 11 through the magneto-rheological damper and the spring guide rail, a sensor used for detecting vibration of equipment needing vibration isolation is installed on the upper bearing plate 1, the control system is connected with the magneto-rheological damper, and the control system changes system attributes by changing the damping coefficient of the magneto-rheological damper, so that the semi-active vibration isolation system can adapt to complex multi-frequency vibration in a complex environment. The four groups of spring guide rails are respectively connected with the upper bearing plate 1 and the middle bearing plate 11 by bolts 10, so that the semi-active vibration isolation system is ensured to have sufficient connection reliability and is convenient to disassemble and assemble; the upper bearing plate 1 is provided with equipment needing vibration isolation.
As shown in fig. 1, 2 and 4, the spring guide rail of the present embodiment includes a positioning device 3, a guide shaft 4, a spring 5, a linear bearing 6 and a washer 7, the positioning device 3 is mounted on the lower surface of the upper layer bearing plate 1, the washers 7 are respectively welded on the lower surface of the positioning device 3 and the linear bearing 6, and the two washers 7 are parallel to each other; one end of a guide shaft 4 is connected with a positioning device 3 arranged on the upper bearing plate 1, a linear bearing 6 is arranged on the middle bearing plate 11, and the other end of the guide shaft 4 is connected with the linear bearing 6 in a sliding way to form a linear pair; the spring 5 is sleeved on the guide shaft 4 and the linear bearing 6, and two ends of the spring 5 are respectively abutted against the upper washer 7 and the lower washer 7 so as to ensure that the spring 5 moves in two parallel planes. The positioning device 3 of the present embodiment includes a positioning plate 17 and a fastening bolt 16, the positioning plate 17 is fixedly connected to the lower surface of the upper layer bearing plate 1 by a bolt 10, one end of the guide shaft 4 is inserted into the positioning plate 17, and is inserted radially by the fastening bolt 16 and fixed with the positioning plate 17. The middle bearing plate 11 of this embodiment is provided with a through hole for the guide shaft 4 to pass through at a position corresponding to the guide shaft 4, so that the guide shaft 4 can slide up and down in a large range.
As shown in fig. 1, 3 and 5, the magnetorheological damper includes a rheological cylinder 13 and a rheological rod 14, one end of the rheological cylinder 13 and one end of the rheological rod 14 are respectively provided with a connecting ring 15, and one end of the rheological rod 14 is located inside the rheological cylinder 13 and is slidably connected with the rheological cylinder 13; the rheological cylinder 13 is filled with magnetorheological fluid. The control system adjusts the damping coefficient of the magneto-rheological damper by changing the input voltage, so that the sliding property of the magneto-rheological damper is changed, and the magneto-rheological damper is further suitable for excitation sources with different frequencies. Lugs 2 are mounted on the lower surface of the upper-layer bearing plate 1 and the upper surface of the middle bearing plate 11, through holes are formed in the lugs 2, and the lugs 2 are fixed on the upper-layer bearing plate 1 and the middle bearing plate 11 through bolts 10. The connecting ring 15 at one end of the rheological rod 14 is hinged with the lifting lug 2 on the upper bearing plate 1 through a pin shaft 12, and the connecting ring at one end of the rheological cylinder 13 is hinged with the lifting lug 2 on the middle bearing plate 11 through the pin shaft 12, so that the required angle inclination can be provided while the connection strength is ensured.
In the embodiment, the lower surface of the middle bearing plate 11 and the upper surface of the foundation plate 8 are respectively provided with a positioning groove, and the rubber vibration isolator 9 is installed in the positioning groove through a bolt 10; the upper bearing plate 1 is provided with a mounting hole for mounting equipment needing vibration isolation; the upper carrier plate 1 can be varied in size according to the vibration source device. The foundation plate 8 is provided with a mounting hole for fixing the whole semi-active vibration isolation system and realizing the stability of the system.
The rubber vibration isolator 9 of the utility model is a commercially available product, and is purchased and placed in Shanghai pine summer vibration absorber Limited company, and the model is JN-130.
The utility model discloses a theory of operation does:
the utility model discloses a magnetic current becomes attenuator, spring guide and rubber vibration isolator 9 and converts the kinetic energy that the vibration produced into heat energy, converts the kinetic energy that the vibration produced into mechanical energy through middle loading board 11 to the vibration energy of isolation transmission 8 reaches the purpose of vibration isolation.
The vibration source is arranged on the upper bearing plate 1, the generated vibration is transmitted to the magnetorheological damper and the spring guide rail through the upper bearing plate 1, the spring guide rail and the magnetorheological damper can generate same-frequency vibration, and the spring 5 and the magnetorheological damper are energy dissipation elements with rigidity, so that the vibration generated can inhibit the amplitude of the vibration source, and simultaneously, a part of vibration energy can be absorbed, and the vibration energy is converted into heat energy. Vibration energy is transmitted downwards after passing through the spring guide rail and the magnetorheological damper element.
The vibration can also make the middle bearing plate 11 generate vibration with the same frequency, and because the mass of the middle bearing plate 11 is large, the vibration of the middle bearing plate 11 can convert the vibration energy of the vibration source into mechanical energy of the middle bearing plate 11, so that a part of the vibration energy is dissipated, and the downward transmission of the vibration is further reduced. The vibration is further transmitted to the rubber vibration isolator 9, the rubber vibration isolator 9 has the characteristics of low rigidity and large damping, and the component can absorb a large amount of energy, so that the vibration transmission is further reduced.
Under the actual operating mode, the vibration of vibration source is not regular vibration, receives the environmental impact great. When the vibration of the vibration source changes suddenly, the control system sends an instruction according to a feedback detection signal and a preset algorithm, and the damping coefficient of the magnetorheological damper is changed, so that the overall property of the vibration isolation system is changed, the vibration after sudden change is adapted, and the purpose of adapting to a complex vibration isolation environment is achieved.
Claims (10)
1. A semi-active vibration isolation system, comprising: the magnetorheological damper comprises an upper bearing plate (1), a spring guide rail, a foundation plate (8), a rubber vibration isolator (9), a middle bearing plate (11) and a magnetorheological damper, wherein the middle bearing plate (11) is positioned between the upper bearing plate (1) and the foundation plate (8), and the rubber vibration isolator (9) is arranged between the middle bearing plate (11) and the foundation plate (8); the upper bearing plate (1) is arranged on the middle bearing plate (11) through a magneto-rheological damper and a spring guide rail, the spring guide rail and the magneto-rheological damper are arranged in parallel, and equipment needing vibration isolation is arranged on the upper bearing plate (1).
2. The semi-active vibration isolation system of claim 1 wherein: a sensor for detecting the vibration of equipment needing vibration isolation is arranged on the upper bearing plate (1) and is connected with a control system; the control system is connected with the magnetorheological damper and adapts to multi-frequency vibration by changing the damping coefficient of the magnetorheological damper.
3. The semi-active vibration isolation system of claim 1 wherein: the spring guide rail comprises a guide shaft (4), a spring (5) and a linear bearing (6), one end of the guide shaft (4) is connected with the upper bearing plate (1), the linear bearing (6) is installed on the middle bearing plate (11), and the other end of the guide shaft (4) is connected with the linear bearing (6) in a sliding mode to form a linear pair; the spring (5) is sleeved on the guide shaft (4) and the linear bearing (6), and two ends of the spring (5) are respectively abutted to the upper bearing plate (1) and the middle bearing plate (11).
4. The semi-active vibration isolation system of claim 3 wherein: the lower surface of the upper bearing plate (1) is provided with a positioning device (3), the lower surface of the positioning device (3) and the linear bearing (6) are respectively and fixedly connected with a gasket (7), the two gaskets (7) are parallel to each other, and two ends of the spring (5) are respectively abutted against the two gaskets (7).
5. The semi-active vibration isolation system of claim 4 wherein: the positioning device (3) comprises a positioning disc (17) and a fastening bolt (16), the positioning disc (17) is fixedly connected to the lower surface of the upper layer bearing plate (1), one end of the guide shaft (4) is inserted into the positioning disc (17) and is fixed with the positioning disc (17) through the fastening bolt (16).
6. The semi-active vibration isolation system of claim 3 wherein: and a through hole for the guide shaft (4) to pass through is formed in the position, corresponding to the guide shaft (4), on the middle bearing plate (11).
7. The semi-active vibration isolation system of claim 1 wherein: the magneto-rheological damper comprises a rheological cylinder (13) and a rheological rod (14), wherein one end of the rheological cylinder (13) and one end of the rheological rod (14) are respectively provided with a connecting ring (15), and one end of the rheological rod (14) is positioned inside the rheological cylinder (13) and is in sliding connection with the rheological cylinder (13); the magnetorheological fluid is filled in the magnetorheological cylinder (13).
8. The semi-active vibration isolation system of claim 7 wherein: lifting lugs (2) are mounted on the lower surface of the upper bearing plate (1) and the upper surface of the middle bearing plate (11), a connecting ring (15) at one end of the rheological rod (14) is hinged to the lifting lugs (2) on the upper bearing plate (1) through a pin shaft (12), and a connecting ring at one end of the rheological cylinder (13) is hinged to the lifting lugs (2) on the middle bearing plate (11) through the pin shaft (12).
9. The semi-active vibration isolation system of claim 7 wherein: the magneto-rheological damper is connected with a control system, and the control system adjusts the damping coefficient of the magneto-rheological damper by changing input voltage so as to adapt to excitation sources with different frequencies.
10. The semi-active vibration isolation system of claim 1 wherein: the lower surface of the middle bearing plate (11) and the upper surface of the foundation plate (8) are respectively provided with a positioning groove, and the rubber vibration isolator (9) is arranged in the positioning groove through a bolt (10); the upper bearing plate (1) is provided with a mounting hole for mounting equipment needing vibration isolation; and the foundation plate (8) is provided with a mounting hole for fixing the whole semi-active vibration isolation system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922360203.2U CN211259458U (en) | 2019-12-25 | 2019-12-25 | Semi-active vibration isolation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922360203.2U CN211259458U (en) | 2019-12-25 | 2019-12-25 | Semi-active vibration isolation system |
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| Publication Number | Publication Date |
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| CN211259458U true CN211259458U (en) | 2020-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922360203.2U Withdrawn - After Issue CN211259458U (en) | 2019-12-25 | 2019-12-25 | Semi-active vibration isolation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110939679A (en) * | 2019-12-25 | 2020-03-31 | 中国科学院沈阳自动化研究所 | Semi-active vibration isolation system |
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2019
- 2019-12-25 CN CN201922360203.2U patent/CN211259458U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110939679A (en) * | 2019-12-25 | 2020-03-31 | 中国科学院沈阳自动化研究所 | Semi-active vibration isolation system |
| CN110939679B (en) * | 2019-12-25 | 2024-02-13 | 中国科学院沈阳自动化研究所 | Semi-active vibration isolation system |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20200814 Effective date of abandoning: 20240213 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20200814 Effective date of abandoning: 20240213 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |