CN111288104A - Vibration isolation system - Google Patents
Vibration isolation system Download PDFInfo
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- CN111288104A CN111288104A CN201811489287.3A CN201811489287A CN111288104A CN 111288104 A CN111288104 A CN 111288104A CN 201811489287 A CN201811489287 A CN 201811489287A CN 111288104 A CN111288104 A CN 111288104A
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- Prior art keywords
- vibration isolation
- vibration
- closed tank
- isolation system
- seat
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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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
- F16F9/0209—Telescopic
- F16F9/0281—Details
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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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
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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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/50—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention relates to the field of micro-vibration control precision equipment, and discloses a vibration isolation system; the vibration isolation system comprises a vibration isolation foundation, a vibration isolator, a vibration isolation seat, a closed tank, an experiment table, a support column, a support rod and a flexible connection sleeve; wherein the vibration isolation seat is supported on the vibration isolation foundation through the vibration isolator; the closed tank is positioned above the vibration isolation seat and is supported on the vibration isolation foundation through the support column penetrating through the vibration isolation seat; the experiment table is positioned in the closed tank and is supported on the vibration isolation seat through the supporting rod penetrating through the closed tank; the soft connecting sleeve is sleeved outside the supporting rod and is hermetically connected with the closed tank. The vibration isolation system has a good vibration isolation effect, has fewer requirements on the vibration isolation seat, the vibration isolator and the occupied area, and is particularly suitable for large-scale closed experiment vibration isolation systems.
Description
Technical Field
The invention relates to the field of micro-vibration control precision equipment, in particular to a vibration isolation system.
Background
The air spring air-flotation vibration isolation platform is widely applied to the fields of aerospace, national defense and military industry, electronic information, space optics, precision machining and the like, and mainly comprises an air spring, a vibration isolation table top and an air supply system. At present, a precision instrument with higher requirements on micro-vibration control is usually subjected to vibration isolation by adopting an air spring air floatation vibration isolation platform system.
Generally, in a precision instrument vibration isolation system for a closed environment experiment, an instrument needs to be arranged in a closed device at first, and then the closed device is arranged on a vibration isolation table top, so that the vibration isolation table top can have a good vibration isolation effect, and guarantee can be provided for the closed environment experiment operation of the precision instrument. However, the vibration isolation system also has a problem that for large-scale precision instruments and experimental devices, an oversized air spring air floatation vibration isolation platform system is required to support, the requirement on an air spring is high, a large floor area is required, and therefore the realization difficulty is high, and the cost is high.
Disclosure of Invention
The invention discloses a vibration isolation system, and aims to provide a closed experiment table vibration isolation system which is good in vibration isolation effect and low in requirements on a vibration isolation platform and occupied area.
In order to achieve the purpose, the invention provides the following technical scheme:
a vibration isolation system comprises a vibration isolation foundation, a vibration isolator, a vibration isolation seat, a closed tank, an experiment table, a support column, a support rod and a flexible connection sleeve; wherein the vibration isolation seat is supported on the vibration isolation foundation through the vibration isolator; the closed tank is positioned above the vibration isolation seat and is supported on the vibration isolation foundation through the support column penetrating through the vibration isolation seat; the experiment table is positioned in the closed tank and is supported on the vibration isolation seat through the supporting rod penetrating through the closed tank; the soft connecting sleeve is sleeved outside the supporting rod and is hermetically connected with the closed tank.
In the vibration isolation system, the experiment table is positioned in the closed tank, and can be used for carrying out closed environment experiments, such as experiments in a vacuum low-temperature environment; specifically, the lower part of the experiment table is supported by the support rod, the vibration isolation seat, the vibration isolator and the vibration isolation foundation in sequence, so that the vibration isolation effect is good, and the vibration control standard can reach Vc-F; the closed tank is directly supported on the vibration isolation foundation through the support column and is respectively arranged with the vibration isolation of the experiment table, so that the influence on the vibration isolation of the experiment table can be avoided; because the weight of the closed tank is not positioned on the vibration isolation seat, the vibration isolation seat and the vibration isolator below the vibration isolation seat do not need to meet the bearing and vibration isolation requirements of a large-scale device, and the requirements are low; in addition, the vibration isolation base and the closed tank are arranged above the vibration isolation foundation, and the support column penetrates through the vibration isolation base and is supported on the vibration isolation foundation, so that the floor space of the vibration isolation foundation is small, namely, the requirement of the whole vibration isolation system on the floor space is small. In conclusion, the vibration isolation system has a good vibration isolation effect, and has small requirements on the vibration isolation seat, the vibration isolator and the floor area, so the vibration isolation system is particularly suitable for large-scale closed experiment vibration isolation systems.
Optionally, a guide rail is arranged between the support rod and the experiment table, and the experiment table can move along the guide rail to partially extend out of the closed tank.
Optionally, a braking device and a locking device are arranged between the experiment table and the guide rail.
Optionally, the flexible connection sleeve is a corrugated pipe.
Optionally, the vibration isolation system further comprises a first flange and a second flange; one end of the flexible connection sleeve is hermetically connected with the closed tank through the first flange, and the other end of the flexible connection sleeve is hermetically connected with the vibration isolation seat through the second flange.
Optionally, the vibration isolator is a compression air spring vibration isolator.
Optionally, the vibration isolation system further comprises a height valve used in cooperation with the vibration isolator.
Optionally, the section of the vibration isolation seat is T-shaped, and the vibration isolation seat comprises a horizontal table and a vertical part; the vibration isolator is positioned below the horizontal platform.
Optionally, the vibration isolation seat is made of steel reinforced concrete, reinforced concrete or a combination of the steel reinforced concrete and the reinforced concrete; the support column is made of steel reinforced concrete, reinforced concrete or section steel.
Optionally, the vibration isolation system further comprises a vacuum device and a refrigeration device; the closed tank is respectively connected with the vacuum device and the refrigerating device through pipelines.
Optionally, the vacuum degree in the closed tank is higher than 10-2Pa; the temperature in the closed tank is lower than 100 k.
Optionally, the vibration isolation system further comprises an optical remote sensor and a measuring device which are arranged on the experiment table.
Drawings
Fig. 1 is a schematic structural diagram of a vibration isolation system according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, an embodiment of the present invention provides a vibration isolation system, which includes a vibration isolation foundation 1, a vibration isolator 2, a vibration isolation seat 3, a closed tank 4, a laboratory bench 5, a support column 6, a support rod 7, and a flexible connection sleeve 8; wherein, the vibration isolation seat 3 is supported on the vibration isolation foundation 1 through the vibration isolator 2; the closed tank 4 is positioned above the vibration isolation seat 3 and is supported on the vibration isolation foundation 1 through a support column 6 penetrating through the vibration isolation seat 3; the experiment table 5 is positioned in the closed tank 4 and is supported on the vibration isolation seat 3 through a support rod 7 penetrating through the closed tank 4; the soft connecting sleeve 8 is sleeved outside the support rod 7 and is hermetically connected with the closed tank 4.
In the vibration isolation system, the experiment table 5 is positioned in the closed tank 4, and can be used for carrying out closed environment experiments, such as experiments in a vacuum low-temperature environment; specifically, the lower part of the experiment table 5 is supported by the support rod 7, the vibration isolation seat 3, the vibration isolator 2 and the vibration isolation foundation 1 in sequence, so that the vibration isolation effect is good, the vibration control standard can reach Vc-F, and the requirement of a precision instrument on the experiment table 5 on micro-vibration control can be ensured; the lower part of the closed tank 4 is directly supported on the vibration isolation foundation 1 through the support column 6 and is respectively arranged with the vibration isolation of the experiment table 5, so that the influence on the vibration isolation of the experiment table 5 can be avoided; because the weight of the closed tank 4 is not positioned on the vibration isolation seat 3, the vibration isolation seat 3 and the vibration isolator 2 below the vibration isolation seat do not need to meet the bearing and vibration isolation requirements of a large-scale device, and the requirements are low; in addition, since the vibration isolation base 3 and the closed tank 4 are arranged above the vibration isolation foundation 1, and the support column 6 penetrates the vibration isolation base 3 and is supported on the vibration isolation foundation 1, the floor space of the vibration isolation foundation 1 is relatively small, that is, the requirement of the whole vibration isolation system on the floor space is relatively small. In conclusion, the vibration isolation system has a good vibration isolation effect, and has fewer requirements on the vibration isolation seat 3, the vibration isolator 2 and the floor area, so that the vibration isolation system is particularly suitable for large-scale closed experiment vibration isolation systems.
In a particular embodiment, as shown in fig. 1, a guide is provided between the support bar 7 and the laboratory table 5, along which the laboratory table 5 can be moved to achieve a partial extension of the closed tank 4. Alternatively, the bottom of the experiment table 5 can be provided with a pulley matched with the guide rail, so that the experiment table 5 becomes an experiment vehicle, and the closed tank 4 can be extended, thereby being convenient for loading and unloading experiment instruments and equipment.
Optionally, a braking device and a locking device can be arranged between the experiment table 5 and the guide rail.
In one particular embodiment, as shown in fig. 1, the flexible coupling sleeve 8 may be a bellows.
Specifically, the vibration isolation system of the present embodiment further includes a first flange 91 and a second flange 92; one end of the flexible connecting sleeve 8 is hermetically connected with the closed tank 4 through a first flange 91, and the other end is hermetically connected with the vibration isolation seat 3 through a second flange 92.
The soft connection sleeve 8 is sleeved outside the support rod 7 and is hermetically connected with the closed tank 4, so that the opening of the closed tank 4 can be sealed, and the air tightness of the closed tank 4 is guaranteed; the flexible connection sleeve 8 is connected between the closed tank 4 and the vibration isolation seat 3, and can also play a role in vibration isolation and buffering.
In one particular embodiment, shown in figure 1, vibration isolator 2 is a compression air spring vibration isolator 2.
The air spring vibration isolator 2 is provided with a damping adjusting device, and the damping and the inflation pressure of the air spring vibration isolator are adjustable.
Specifically, the vibration isolation system of this embodiment further includes an air supply system connected to the air spring vibration isolator 2, and this air supply system includes an air compressor, a filter, a pressure stabilizer, and a pressure regulation control system.
Further, the vibration isolation system of the present embodiment further includes a height valve used in cooperation with the vibration isolator 2 for detecting the height and the levelness of the vibration isolation seat 3.
Furthermore, the vibration isolation system of the embodiment may further include an automatic control system, which may send a signal when the height valve detects the inclination of the top of the vibration isolation seat 3, and the automatic control system may adjust the height of the air spring vibration isolator 2 according to the signal, thereby realizing automatic control of the vibration isolation seat 3 and ensuring the level and vibration isolation precision of the experiment table 5.
In a specific embodiment, as shown in fig. 1, the vibration isolation base 3 has a T-shaped cross section, and includes a horizontal platform 31 and a vertical part 32, and the vibration isolation base 3 has a large mass and a low center of gravity, has high stability, and can improve the vibration isolation effect; further, the vibration isolator 2 is located below the horizontal platform 31, and the horizontal platform 31 is further provided with an opening 33 which vertically penetrates through, and the support column 6 penetrates through the opening 33 and is supported on the vibration isolation foundation 1.
Optionally, the vibration isolation seat 3 is made of steel reinforced concrete, reinforced concrete or a combination of the steel reinforced concrete and the reinforced concrete; the support column 6 is made of steel reinforced concrete, reinforced concrete or steel section.
As shown in fig. 1, in a specific embodiment, the vibration isolation system of the present embodiment further includes a vacuum device and a refrigeration device; the closed tank 4 is provided with a pipeline interface 41 and is respectively connected with a vacuum device and a refrigerating device through pipelines.
The vacuum device and the refrigerating device are respectively used for guaranteeing the vacuum degree and the temperature inside the closed tank 4 during working, and further the requirements of experimental instruments on the vibration isolation experiment table 5 in the closed tank 4 on the working environment are guaranteed.
Specifically, one or more of a cold plate, a heat sink and a coil pipe can be arranged in the closed tank 4, and the devices are connected with an external refrigerating device to realize the control of the internal temperature of the closed tank 4.
Optionally, the vacuum degree in the closed tank 4 is higher than 10-2Pa; the temperature inside the closed vessel 4 is less than 100 k.
In a specific embodiment, the vibration isolation system of the embodiment further includes an optical remote sensor and a measuring system which are arranged on the experiment table 5, and further, the inside of the closed tank 4 can simulate a space low-temperature high-vacuum environment for testing the operation condition of the optical remote sensor.
It should be noted that the experiment table described in the embodiment of the present invention may include various carrier forms such as a platform, a container, a bracket, etc., and is not limited to only a single platform.
In the vibration isolation system provided by the embodiment of the invention, a vibration isolation foundation 1, a vibration isolator 2, a vibration isolation seat 3, a support rod 7 and a test bench 5 are sequentially connected to form an air spring air floatation platform vibration isolation mechanism, and a closed tank 4 is sequentially connected with a support column 6 and the vibration isolation foundation 1 to form a closed environment protection mechanism; because the two mechanisms are independent and separated vibration isolation, the micro-vibration influence of a refrigerating device and a vacuum device on the experiment table 5 can be greatly weakened, so that the vibration isolation precision of the experiment table 5 can be improved, and the vibration isolation requirement of a high-precision experiment can be met; in addition, compared with the traditional method, the vibration isolation system greatly reduces the volume and quality requirements of the vibration isolator 2 and the vibration isolation seat 3, and the occupied area of the whole vibration isolation system is smaller, so that the requirement of an ultra-large vibration isolation device can be met.
It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (12)
1. A vibration isolation system is characterized by comprising a vibration isolation foundation, a vibration isolator, a vibration isolation seat, a closed tank, an experiment table, a support column, a support rod and a flexible connection sleeve; wherein the vibration isolation seat is supported on the vibration isolation foundation through the vibration isolator; the closed tank is positioned above the vibration isolation seat and is supported on the vibration isolation foundation through the support column penetrating through the vibration isolation seat; the experiment table is positioned in the closed tank and is supported on the vibration isolation seat through the supporting rod penetrating through the closed tank; the soft connecting sleeve is sleeved outside the supporting rod and is hermetically connected with the closed tank.
2. The vibration isolation system according to claim 1, wherein a guide rail is provided between said support rod and said test table, said test table being movable along said guide rail to achieve partial extension of said containment tank.
3. The vibration isolation system according to claim 2, wherein a brake device and a locking device are provided between said laboratory bench and said guide rail.
4. The vibration isolation system according to any one of claims 1 to 3, wherein said flexible coupling sleeve is a bellows.
5. The vibration isolation system of claim 4, further comprising a first flange and a second flange; one end of the flexible connection sleeve is hermetically connected with the closed tank through the first flange, and the other end of the flexible connection sleeve is hermetically connected with the vibration isolation seat through the second flange.
6. The vibration isolation system of any one of claims 1 to 3, wherein said vibration isolator is a compression air spring vibration isolator.
7. The vibration isolation system of claim 6, further comprising a height valve used in conjunction with the vibration isolator.
8. The vibration isolation system according to claim 6, wherein the vibration isolation mount has a T-shaped cross section including a horizontal platform and a vertical portion; the vibration isolator is positioned below the horizontal platform.
9. The vibration isolation system according to any one of claims 1 to 3, wherein the material of the vibration isolation mount is steel reinforced concrete, reinforced concrete or a combination of both; the support column is made of steel reinforced concrete, reinforced concrete or section steel.
10. The vibration isolation system according to any one of claims 1 to 3, further comprising a vacuum device and a refrigeration device; the closed tank is respectively connected with the vacuum device and the refrigerating device through pipelines.
11. The vibration isolation system according to claim 10, wherein the vacuum level in said containment tank is greater than 10 degrees f-2Pa; the temperature in the closed tank is lower than 100 k.
12. The vibration isolation system of claim 10, further comprising an optical remote sensor and a measuring device disposed on said laboratory bench.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811489287.3A CN111288104A (en) | 2018-12-06 | 2018-12-06 | Vibration isolation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811489287.3A CN111288104A (en) | 2018-12-06 | 2018-12-06 | Vibration isolation system |
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| Publication Number | Publication Date |
|---|---|
| CN111288104A true CN111288104A (en) | 2020-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811489287.3A Pending CN111288104A (en) | 2018-12-06 | 2018-12-06 | Vibration isolation system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112095825A (en) * | 2020-08-13 | 2020-12-18 | 中国建筑第八工程局有限公司 | Vibration isolation structure of high-speed rail of underpass terminal building and construction method thereof |
| CN113188764A (en) * | 2021-04-16 | 2021-07-30 | 中国科学院西安光学精密机械研究所 | Temperature test box with vibration isolation platform |
| CN114032969A (en) * | 2021-11-11 | 2022-02-11 | 北京华卓精科科技股份有限公司 | Multistage vibration isolation system and method for precision instrument |
-
2018
- 2018-12-06 CN CN201811489287.3A patent/CN111288104A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112095825A (en) * | 2020-08-13 | 2020-12-18 | 中国建筑第八工程局有限公司 | Vibration isolation structure of high-speed rail of underpass terminal building and construction method thereof |
| CN113188764A (en) * | 2021-04-16 | 2021-07-30 | 中国科学院西安光学精密机械研究所 | Temperature test box with vibration isolation platform |
| CN114032969A (en) * | 2021-11-11 | 2022-02-11 | 北京华卓精科科技股份有限公司 | Multistage vibration isolation system and method for precision instrument |
| CN114032969B (en) * | 2021-11-11 | 2023-02-28 | 北京华卓精科科技股份有限公司 | Multistage vibration isolation system and method for precision instrument |
| WO2023082751A1 (en) * | 2021-11-11 | 2023-05-19 | 北京华卓精科科技股份有限公司 | Multi-stage vibration isolation system and method for precision instrument |
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