CN109307038A - A kind of damper of the multilayer pole plate based on giant electro-rheological liquid shearing valve type - Google Patents
A kind of damper of the multilayer pole plate based on giant electro-rheological liquid shearing valve type Download PDFInfo
- Publication number
- CN109307038A CN109307038A CN201811517303.5A CN201811517303A CN109307038A CN 109307038 A CN109307038 A CN 109307038A CN 201811517303 A CN201811517303 A CN 201811517303A CN 109307038 A CN109307038 A CN 109307038A
- Authority
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- China
- Prior art keywords
- pole plate
- outer cylinder
- axis
- rheological liquid
- giant electro
- 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.)
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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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/53—Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
- F16F9/532—Electrorheological [ER] fluid dampers
-
- 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
- F16F2222/00—Special physical effects, e.g. nature of damping effects
- F16F2222/06—Magnetic or electromagnetic
-
- 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
- F16F2222/00—Special physical effects, e.g. nature of damping effects
- F16F2222/12—Fluid damping
Abstract
The invention discloses a kind of dampers of multilayer pole plate based on giant electro-rheological liquid shearing valve type, including outer cylinder, described outer cylinder one end is provided with upper end cover, the outer cylinder other end is provided with lower cover, be provided with axis in the outer cylinder, the axis through the upper end cover and can the relatively described upper end cover sliding, be provided with several pole plates on the axis, giant electro-rheological liquid is filled in the outer cylinder, the pole plate and the outer cylinder lead to opposite polarity electricity.The present invention is connect by axis with the device of absorbing is needed, pole plate leads to positive electricity, and outer cylinder leads to negative electricity, and axis band movable plate electrode moves up and down, giant electro-rheological liquid is by shear action, under the action of extra electric field, rheological property changes giant electro-rheological liquid, and viscosity increases, damped coefficient becomes larger, generate certain damping, to realize absorbing, the size of damping force of the invention can be adjusted by changing the voltage inputted to each layer pole plate, and then realize semi- active control and active control.
Description
Technical field
The present invention relates to damper technique fields, more particularly to a kind of multilayer pole based on giant electro-rheological liquid shearing valve type
The damper of plate.
Background technique
ER fluid is to be dispersed in the suspension liquid formed in the solvent of low-k by the little particle of high dielectric constant.
This suspension liquid can make solid particle polarize and interact under DC Electric Field in the moment of Millisecond, be formed flat
Row is in the chain or column structure of electric field, so that liquid be made to show as this structure shape of the similar solid with certain yield stress
State makes apparent viscosity increase several orders of magnitude.This effect for making fluid change state is called electric rheological effect.
Electro-rheological fluid damper is a kind of very widely used energy-eliminating shock-absorbing control device, can be used for the necks such as mechanical, building
Domain.Its control mechanism is by the way that the electric rheological effect in damper, the partial vibration energy of structure is consumed by damping material
It dissipates, achievees the purpose that alleviate the outer impact carried, reduces structural vibration, protection structure safety.
Giant electro-rheological liquid is to be dispersed in the one kind formed in the base fluid of giant electro-rheological liquid by polarizable dielectric particles to hang
Supernatant liquid, when applying electric field to it, the performances transient change such as viscosity, shear strength, the sizes such as viscosity, intensity are with electric field tune
Section is continuously adjustable, and adjustable extent is big, and even up to several orders of magnitude can be converted to high viscosity fluid, even by low viscosity fluid
Solid.After extra electric field removes, it can be restored to fluid state within the millisecond time again, this between liquid and solid
Attribute between controllable, reversible, continuous transformation, can by electric field realize torque controlled delivery and mechanism it is online it is stepless,
Reversible control can substitute traditional one mechanical switch component of electricity, in the self adaptive control mechanism industrial circle of electromechanical integration
It has a wide range of applications, is especially led in national defense construction, the vehicles, hydraulic device, machinery manufacturing industry, sensor technology etc.
Domain has more extensive application foundation and application demand, is one of the critical material that development is badly in need of in damping vibration attenuation field.
Done research work is taught according to Hong Kong University of Science and Thchnology Wen Weijia, the novel giant electro-rheological liquid developed at present exists
The yield strength that can achieve 130kPa or more under the electric field strength of 5KV/mm, can satisfy requirement of engineering completely.But it is this
The coefficient of viscosity of novel giant electro-rheological liquid is only 1/10, the only 0.1Pas that common current becomes liquid, and general electric current
Become the coefficient of viscosity of liquid as 1Pas.Therefore, under similarity condition, common current becomes the viscous damping force that liquid provides and is far longer than newly
The viscous damping forces that type giant electro-rheological liquid provides.
During military service, vibration or shock loading can seriously affect its safety and use for various buildings or mechanical structure
Service life.In structure installation can be with the damping device of passive energy dissipation reduce its vibration or shock response, increase its safety and
The effective means of stability.Traditional passive control damper (such as hydraulic damper) is only capable of providing uncontrollable damping force,
Its vibration control effect is undesirable.
Summary of the invention
The object of the present invention is to provide a kind of dampers of multilayer pole plate based on giant electro-rheological liquid shearing valve type, to solve
The above-mentioned problems of the prior art makes the adjustable section of damping force.
To achieve the above object, the present invention provides following schemes:
The present invention provides a kind of damper of multilayer pole plate based on giant electro-rheological liquid shearing valve type, including outer cylinder, institutes
It states outer cylinder one end and is provided with upper end cover, the outer cylinder other end is provided with lower cover, and axis is provided in the outer cylinder, and the axis passes through
Wear the upper end cover and can upper end cover sliding relatively, be provided with several pole plates on the axis, be filled in the outer cylinder
Giant electro-rheological liquid, the pole plate and the outer cylinder lead to opposite polarity electricity.
Preferably, insulation board is provided between the pole plate and the axis, the lower end of the axis is provided with briquetting, the pressure
For fixing the pole plate and the insulation board, the briquetting, the axis are all made of insulating materials and are made block.
Preferably, the axis is hollow shaft, is provided with through-hole on the insulation board, the through-hole is connected with the hollow shaft
It is logical；Further include conducting wire, the pole plate is separately connected one end of a conducting wire, the other end of the conducting wire pass through the through-hole,
The hollow shaft connects to power supply.
Preferably, the gap of the inner wall of the pole plate and the outer cylinder is 1-3mm.
Preferably, several pits are provided on the pole plate.
Preferably, the inside of the outer cylinder is additionally provided with floating piston, and the floating piston is located at the lower section of the briquetting,
It is compensated cavity between the floating piston and the lower cover, is not filled with the giant electro-rheological liquid in the compensated cavity.
Preferably, between the floating piston and the outer cylinder, between the outer cylinder and the upper end cover, the outer cylinder with
O-ring seal is provided between the lower cover.
Preferably, the pole plate leads to positive electricity, and the outer cylinder leads to negative electricity.
The present invention achieves following technical effect compared with the existing technology:
The present invention is connect by axis with the device of absorbing is needed, and pole plate leads to positive electricity, and outer cylinder leads to negative electricity, and axis is on movable plate electrode work
Lower movement, giant electro-rheological liquid is by shear action, and under the action of extra electric field, rheological property changes giant electro-rheological liquid,
Viscosity increases, damped coefficient becomes larger, and generates certain damping, to realize absorbing, the size of damping force of the invention can
To be adjusted by changing the voltage inputted to each layer pole plate, and then realize semi- active control and active control.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the main view of the damper of the multilayer pole plate of the invention based on giant electro-rheological liquid shearing valve type；
Fig. 2 is the A-A cross-sectional view of Fig. 1；
Fig. 3 is the top view of the damper of the multilayer pole plate of the invention based on giant electro-rheological liquid shearing valve type；
Wherein: 1- axis, 2- bolt, 3- upper end cover, 4- outer cylinder, 5- lower cover, 6-O type sealing ring, 7- insulation board, 8- pressure
Block, 9- floating piston, 10- pole plate, 11- epicoele, 12- cavity of resorption, 13- compensated cavity, 14- through-hole.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art under the premise of not making the creative labor it is obtained it is all its
His embodiment, shall fall within the protection scope of the present invention.
The object of the present invention is to provide a kind of dampers of multilayer pole plate based on giant electro-rheological liquid shearing valve type, to solve
The above-mentioned problems of the prior art makes the adjustable section of damping force.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
It is as shown in Figure 1-Figure 3: to present embodiments provide a kind of multilayer pole plate 10 based on giant electro-rheological liquid shearing valve type
Damper, including outer cylinder 4,4 one end of outer cylinder are provided with upper end cover 3, and 4 other end of outer cylinder is provided with lower cover 5, outer cylinder 4 and upper end
Lid 3, lower cover 5 are attached by bolt 2, and axis 1 is provided in outer cylinder 4, and axis 1 runs through upper end cover 3 and being capable of opposite upper
Lid 3 slides, and is provided with several insulation boards 7 on axis 1, and in the present embodiment, insulation board 7 is four, is provided with pole plate on the outside of insulation board 7
10, pole plate 10 is annular, and electrode gap is formed between each pole plate 10, and it is micro- to pass through either physically or chemically progress surface on pole plate 10
The processing of hole pit, the shape of pit can be hemispherical, triangular pyramid or pyramid shape.Between pole plate 10 and the inner wall of outer cylinder 4
Gap is 1-3mm, preferably 2mm.The lower end of axis 1 is provided with briquetting 8, and briquetting 8 is used for fixed polar plate 10 and insulation board 7, briquetting 8,
Axis 1 and upper end cover 3 are all made of insulating materials and are made, and the inside of outer cylinder 4 is additionally provided with floating piston 9, and floating piston 9 is located at briquetting
8 lower section is provided with O-shaped between floating piston 9 and outer cylinder 4, between outer cylinder 4 and upper end cover 3, between outer cylinder 4 and lower cover 5
Sealing ring 6.Between upper end cover 3 and insulation board 7 be epicoele 11, between briquetting 8 and floating piston 9 be cavity of resorption 12, floating piston 9 with
It is compensated cavity 13 between lower cover 5, giant electro-rheological liquid is filled in epicoele 11, cavity of resorption 12 and between epicoele 11 and cavity of resorption 12,
Compensated cavity 13 carries out pressure compensation when axis 1 moves up and down.
In the present embodiment, axis 1 is hollow shaft, is provided with through-hole 14 on insulation board 7, through-hole 14 is connected with hollow shaft, often
A pole plate 10 is connect with one end of each wire respectively, and the other end of conducting wire passes through through-hole 14, hollow shaft connects to power supply.
The damper of the present embodiment is to realize damping action according to the damping effect of giant electro-rheological liquid.The present embodiment is logical
It crosses axis 1 and is connect with the device of absorbing is needed, pole plate 10 leads to positive electricity, and outer cylinder 4 leads to negative electricity, and axis 1 moves up and down with movable plate electrode 10, huge
ER fluid is by shear action, and under the action of extra electric field, rheological property changes giant electro-rheological liquid, viscosity increase,
Damped coefficient becomes larger, and generates certain damping, so that absorbing is realized, by changing the voltage tune inputted to each layer pole plate 10
Save the size of damping force.
The pole plate 10 of the present embodiment is annular surface, and when the size of outer cylinder 4 determines, pole plate 10 uses annular, damper
Compact-sized, pole plate 10 relative area is big, damping is good；And applied voltage can change on each layer of pole plate 10,
And then realize the semi- active control of damping, the adjustable extent of damping force produced by such damper is bigger, better than using single layer pole
The damper of plate, damper stroke range is big, can be used for being displaced under biggish vibration damping environment；At the pitting on 10 surface of pole plate
Reason, the interior area for increasing damp channel, significantly reduces the sliding between giant electro-rheological liquid and 10 surface of pole plate in a limited space.
The response that giant electro-rheological liquid changes with voltage quickly, being capable of quick absorbing.The present embodiment have simple structure, fast response time,
Light weight, it is small in size, damping force is big the advantages that.
Apply that a specific example illustrates the principle and implementation of the invention in this specification, above embodiments
Explanation be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art,
According to the thought of the present invention, there will be changes in the specific implementation manner and application range.In conclusion in this specification
Appearance should not be construed as limiting the invention.
Claims (8)
1. a kind of damper of the multilayer pole plate based on giant electro-rheological liquid shearing valve type, it is characterised in that: described outer including outer cylinder
Cylinder one end is provided with upper end cover, and the outer cylinder other end is provided with lower cover, and axis is provided in the outer cylinder, and the axis runs through institute
State upper end cover and can upper end cover sliding relatively, be provided with several pole plates on the axis, be filled with huge electricity in the outer cylinder
Rheology liquid, the pole plate and the outer cylinder lead to opposite polarity electricity.
2. the damper of the multilayer pole plate according to claim 1 based on giant electro-rheological liquid shearing valve type, it is characterised in that:
Insulation board is provided between the pole plate and the axis, the lower end of the axis is provided with briquetting, and the briquetting is for described in fixation
Pole plate and the insulation board, the briquetting, the axis are all made of insulating materials and are made.
3. the damper of the multilayer pole plate according to claim 2 based on giant electro-rheological liquid shearing valve type, it is characterised in that:
The axis is hollow shaft, is provided with through-hole on the insulation board, the through-hole is connected with the hollow shaft；It further include conducting wire,
The pole plate is separately connected one end of a conducting wire, and the other end of the conducting wire passes through the through-hole, the hollow shaft and electricity
Source connection.
4. the damper of the multilayer pole plate according to claim 1 based on giant electro-rheological liquid shearing valve type, it is characterised in that:
The gap of the inner wall of the pole plate and the outer cylinder is 1-3mm.
5. the damper of the multilayer pole plate according to claim 1 based on giant electro-rheological liquid shearing valve type, it is characterised in that:
Several pits are provided on the pole plate.
6. the damper of the multilayer pole plate according to claim 2 based on giant electro-rheological liquid shearing valve type, it is characterised in that:
The inside of the outer cylinder is additionally provided with floating piston, and the floating piston is located at the lower section of the briquetting, the floating piston with
It is compensated cavity between the lower cover, is not filled with the giant electro-rheological liquid in the compensated cavity.
7. the damper of the multilayer pole plate according to claim 6 based on giant electro-rheological liquid shearing valve type, it is characterised in that:
Between the floating piston and the outer cylinder, between the outer cylinder and the upper end cover, between the outer cylinder and the lower cover
It is provided with O-ring seal.
8. the damper of the multilayer pole plate according to claim 1 based on giant electro-rheological liquid shearing valve type, it is characterised in that:
The pole plate leads to positive electricity, and the outer cylinder leads to negative electricity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811517303.5A CN109307038B (en) | 2018-12-12 | 2018-12-12 | A kind of damper of the multilayer pole plate based on giant electro-rheological liquid shearing valve type |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811517303.5A CN109307038B (en) | 2018-12-12 | 2018-12-12 | A kind of damper of the multilayer pole plate based on giant electro-rheological liquid shearing valve type |
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| Publication Number | Publication Date |
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| CN109307038A true CN109307038A (en) | 2019-02-05 |
| CN109307038B CN109307038B (en) | 2019-09-03 |
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| CN201811517303.5A Active CN109307038B (en) | 2018-12-12 | 2018-12-12 | A kind of damper of the multilayer pole plate based on giant electro-rheological liquid shearing valve type |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109752235A (en) * | 2019-03-27 | 2019-05-14 | 上海大学 | A kind of giant electro-rheological liquid extruding force test device |
| CN112901703A (en) * | 2021-01-29 | 2021-06-04 | 重庆大学 | Prevent subsiding formula multilayer spiral polar plate attenuator based on huge electrorheological fluids |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109752235A (en) * | 2019-03-27 | 2019-05-14 | 上海大学 | A kind of giant electro-rheological liquid extruding force test device |
| CN112901703A (en) * | 2021-01-29 | 2021-06-04 | 重庆大学 | Prevent subsiding formula multilayer spiral polar plate attenuator based on huge electrorheological fluids |
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| Publication number | Publication date |
|---|---|
| CN109307038B (en) | 2019-09-03 |
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