CN114233785A - Dynamic vibration absorber - Google Patents
Dynamic vibration absorber Download PDFInfo
- Publication number
- CN114233785A CN114233785A CN202111440481.4A CN202111440481A CN114233785A CN 114233785 A CN114233785 A CN 114233785A CN 202111440481 A CN202111440481 A CN 202111440481A CN 114233785 A CN114233785 A CN 114233785A
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- CN
- China
- Prior art keywords
- damping device
- vibration
- base
- dynamic vibration
- diaphragm spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000006096 absorbing agent Substances 0.000 title claims abstract description 9
- 238000013016 damping Methods 0.000 claims abstract description 34
- 238000009434 installation Methods 0.000 claims abstract description 4
- 239000012528 membrane Substances 0.000 claims description 17
- 238000010521 absorption reaction Methods 0.000 abstract description 11
- 230000009467 reduction Effects 0.000 abstract description 11
- 238000002955 isolation Methods 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 230000002401 inhibitory effect Effects 0.000 abstract 1
- 230000009471 action Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Images
Classifications
-
- 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
- F16F7/00—Vibration-dampers; Shock-absorbers
- F16F7/10—Vibration-dampers; Shock-absorbers using inertia effect
- F16F7/1005—Vibration-dampers; Shock-absorbers using inertia effect characterised by active control of the mass
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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
- F16F7/00—Vibration-dampers; Shock-absorbers
- F16F7/10—Vibration-dampers; Shock-absorbers using inertia effect
- F16F7/104—Vibration-dampers; Shock-absorbers using inertia effect the inertia member being resiliently mounted
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a dynamic vibration absorber which comprises a damping block, a base, an upper cover, an outer cylinder, an upper diaphragm spring and a lower diaphragm spring, wherein the outer cylinder, the base and the upper cover are fixedly connected, the damping device is installed in an installation hole in the inner side of the outer cylinder, the upper diaphragm spring is fixed between the upper cover and the damping device, the lower diaphragm spring is fixed between the base and the damping device, the upper pressing block fixes the diaphragm springs and the upper end of the damping device through small mass blocks and screws, and the lower pressing block fixes the lower end of the damping device through screws and large mass blocks. The dynamic vibration absorption device is used for further improving the capability of inhibiting the vibration of the specific frequency point vibration disturbing frequency for a dynamic vibration absorption system, applies the damping device vibration reduction and isolation technology, and has the advantages of small volume, high reliability, strong adaptability, remarkable vibration reduction effect and the like. The vibration absorber is suitable for vibration reduction of a power device.
Description
Technical Field
The invention relates to the technical field of aerospace, in particular to a dynamic vibration absorption device.
Background
The vibration reduction and isolation technology is widely concerned as a key technology in the field of aerospace all the time, and most of the vibration reduction and isolation technologies adopt vibration absorbers to reduce and isolate the vibration of the structure, as described in the prior art CN107943128A, the vibration reduction and isolation structure of the multi-degree of freedom voice coil and the control method thereof use two actuators to form the vibration reduction and isolation structure, connect a mounting platform and a base in series, and each actuator consists of two voice coil motors and two diaphragm springs; when the upper voice coil motor is started, a negative stiffness can be provided between the mounting platform and the transition platform of the actuator and is connected with the positive stiffness of the lower membrane spring in series, so that the overall stiffness of the structure can be theoretically infinite, and the direct interference brought by the mounting platform is restrained; when the lower voice coil motor is started, a variable damping is provided, so that the vibration of the base is well isolated when being transmitted to the actuator transition platform, and low-frequency resonance caused by the flexibility of the lower membrane spring is weakened or even eliminated, so that the influence of the broadband vibration of the base on high-precision equipment on the mounting platform is greatly weakened. In the prior art, a subsystem, namely a vibration absorber, is additionally arranged in a working system, so that the structural parameters and the performance parameters of the subsystem are reasonably determined, and the vibration state of the working system is changed, and therefore the disturbance vibration of a specific frequency point of the system is inhibited on a specific frequency band. Therefore, most shock absorbers have complicated structures and are severely limited in application.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a dynamic vibration absorption device which is simple in structure, strong in applicability and the like.
The technical scheme adopted by the invention is that the dynamic vibration absorption device comprises a damping block and is characterized in that: the damping device comprises a base, an upper cover, an outer barrel and an upper membrane spring and a lower membrane spring, wherein the outer barrel, the base and the upper cover are fixedly connected, the damping device is installed in an installation hole in the inner side of the outer barrel, the upper membrane spring is fixed between the upper cover and the damping device, the lower membrane spring is fixed between the base and the damping device, an upper pressing block fixes the membrane spring and the upper end of the damping device through a small mass block and a screw, and the lower pressing block fixes the lower end of the damping device through a screw and a large mass block.
The outer cylinder is fixedly connected with the base and the upper cover through screws.
The power cord is connected with a power supply system through the outer barrel wire passing hole.
The upper membrane spring and the lower membrane spring are respectively fixed on the inner side of the base and the inner side of the upper cover through pin shafts.
The dynamic vibration absorption device has the beneficial effects that the dynamic vibration absorption device is used for further improving the inhibition capability of a dynamic vibration absorption system on the vibration of the specific frequency point vibration interference frequency, and the damping device vibration reduction and isolation technology is applied, so that the dynamic vibration absorption device has the advantages of small volume, high reliability, strong adaptability, remarkable vibration reduction effect and the like.
Drawings
Fig. 1 is a schematic structural diagram of a dynamic vibration absorber;
fig. 2 is a sectional view of the dynamic vibration absorbing apparatus;
labeled as: 1-base, 2-outer cylinder, 3-upper cover, 4-upper pressing block, 5-upper diaphragm spring, 6-small mass block, 7-connecting screw rod, 8-damping device, 9-large mass block, 10-lower pressing block and 11-lower diaphragm spring.
Detailed Description
The invention will be further explained with reference to the drawings.
As shown in fig. 1 and 2, the dynamic-vibration absorbing apparatus of the present invention, in which a base 1 is connected to a target system after the apparatus is assembled, is provided. The base 1 is fastened and connected with a screw hole at the lower part of the outer cylinder 2 through a screw, the upper cover 3 is fastened and connected with a screw hole at the upper part of the outer cylinder 2 through a screw thread, and the damping device 8 is fixed in a mounting hole at the inner side of the outer cylinder 2 through a screw. Still include two upper and lower membrane springs 4, the membrane spring is thin slice loop configuration, membrane spring 4 passes through pinhole cooperation respectively with base 1 and upper cover 3 fixed connection, it fixes between upper cover and damping device to go up the membrane spring, lower membrane spring fixes between base 1 and damping device 8, this kind of mounting structure, compact structure on not only the space, and the installation firmness can obtain guaranteeing, and can combine briquetting 4, briquetting 10 and two quality pieces carry out the fixed of upper and lower two positions to damping device 8 down, it is shown specifically in fig. 2, it fixes membrane spring and damping device upper end through little quality piece 6, the screw, briquetting 10 fixes damping device 8 lower extreme through screw and big mass 9 down. Finally, the base 1 is fixedly connected with a target system.
When the damping device 8 is used, the damping device 8 acts after being electrified to generate reciprocating vibration with specific frequency to offset the disturbance vibration of a fixed frequency point of a target system, so that the aim of vibration reduction is fulfilled. The structure is simple and compact, the principle is simple, and the effect is good.
The damping device adopts the action form of the damping device, has simple and compact structure, greatly improves the active vibration reduction and isolation capacity of the device, and effectively reduces the vibration impact of the system; the damping device is used as a power source for vibration absorption and has the characteristics of high response speed, strong vibration absorption capacity, high stability, compact structure and small occupied space; the membrane spring is the thin slice loop configuration, can play fixed action promptly, also can be at the axial motion of working process, has ensured the motion characteristic of bump leveller.
Claims (4)
1. The dynamic vibration absorber comprises a damping block and is characterized in that: the damping device is installed in an installation hole in the inner side of the outer barrel, the upper diaphragm spring is fixed between the upper cover and the damping device, the lower diaphragm spring is fixed between the base and the damping device, the upper pressing block fixes the diaphragm spring and the upper end of the damping device through a small mass block and a screw, and the lower pressing block fixes the lower end of the damping device through a screw and a large mass block.
2. The dynamic vibration absorbing apparatus of claim 1, wherein: the outer barrel is fixedly connected with the base and the upper cover through screws.
3. The dynamic vibration absorbing apparatus of claim 1, wherein: the power cord is connected with a power supply system through the outer barrel wire passing hole.
4. The dynamic vibration absorbing apparatus of claim 1, wherein: the two membrane springs are respectively fixed on the inner side of the base and the inner side of the upper cover through pin shafts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111440481.4A CN114233785A (en) | 2021-11-30 | 2021-11-30 | Dynamic vibration absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111440481.4A CN114233785A (en) | 2021-11-30 | 2021-11-30 | Dynamic vibration absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114233785A true CN114233785A (en) | 2022-03-25 |
Family
ID=80752034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111440481.4A Pending CN114233785A (en) | 2021-11-30 | 2021-11-30 | Dynamic vibration absorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114233785A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010014174A (en) * | 2008-07-02 | 2010-01-21 | Aisin Seiki Co Ltd | Active vibration control device |
| JP2011109831A (en) * | 2009-11-18 | 2011-06-02 | Aisin Seiki Co Ltd | Linear actuator |
| CN102168738A (en) * | 2011-05-11 | 2011-08-31 | 北京航空航天大学 | Six-degree-of-freedom active and passive dynamic vibration-absorbing device |
| CN102297235A (en) * | 2010-06-23 | 2011-12-28 | 现代自动车株式会社 | Active dynamic vibration absorber apparatus for vehicle |
| CN106257123A (en) * | 2016-08-01 | 2016-12-28 | 北京工业大学 | A kind of magnetorheological pipeline dual dynamic damping absorber |
| CN107943128A (en) * | 2017-12-25 | 2018-04-20 | 北京航空航天大学 | A kind of multivariant voice coil loudspeaker voice coil vibration isolation vibration suppression structure and its control method |
| CN108667206A (en) * | 2018-05-15 | 2018-10-16 | 北京控制工程研究所 | A kind of flexible actuator of intelligence based on the double film springs of separate type |
| CN109115442A (en) * | 2018-09-25 | 2019-01-01 | 中国科学院长春光学精密机械与物理研究所 | Micro-vibration analog platform and micro-vibration simulation system |
| CN112640275A (en) * | 2018-08-28 | 2021-04-09 | 美蓓亚三美株式会社 | Vibration actuator and electronic device |
| JP2021176637A (en) * | 2020-09-16 | 2021-11-11 | フォスター電機株式会社 | Vibration actuator |
-
2021
- 2021-11-30 CN CN202111440481.4A patent/CN114233785A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010014174A (en) * | 2008-07-02 | 2010-01-21 | Aisin Seiki Co Ltd | Active vibration control device |
| JP2011109831A (en) * | 2009-11-18 | 2011-06-02 | Aisin Seiki Co Ltd | Linear actuator |
| CN102297235A (en) * | 2010-06-23 | 2011-12-28 | 现代自动车株式会社 | Active dynamic vibration absorber apparatus for vehicle |
| CN102168738A (en) * | 2011-05-11 | 2011-08-31 | 北京航空航天大学 | Six-degree-of-freedom active and passive dynamic vibration-absorbing device |
| CN106257123A (en) * | 2016-08-01 | 2016-12-28 | 北京工业大学 | A kind of magnetorheological pipeline dual dynamic damping absorber |
| CN107943128A (en) * | 2017-12-25 | 2018-04-20 | 北京航空航天大学 | A kind of multivariant voice coil loudspeaker voice coil vibration isolation vibration suppression structure and its control method |
| CN108667206A (en) * | 2018-05-15 | 2018-10-16 | 北京控制工程研究所 | A kind of flexible actuator of intelligence based on the double film springs of separate type |
| CN112640275A (en) * | 2018-08-28 | 2021-04-09 | 美蓓亚三美株式会社 | Vibration actuator and electronic device |
| CN109115442A (en) * | 2018-09-25 | 2019-01-01 | 中国科学院长春光学精密机械与物理研究所 | Micro-vibration analog platform and micro-vibration simulation system |
| JP2021176637A (en) * | 2020-09-16 | 2021-11-11 | フォスター電機株式会社 | Vibration actuator |
Non-Patent Citations (1)
| Title |
|---|
| 冷俊桦;蒋开洪;朱茂桃;傅涛;上官文斌;: "电动主动吸振器的设计及特性研究", 汽车技术, no. 09, pages 40 - 46 * |
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