CN110528717A - Diagonal brace damper based on magnetic rheology elastic body - Google Patents
Diagonal brace damper based on magnetic rheology elastic body Download PDFInfo
- Publication number
- CN110528717A CN110528717A CN201910841370.0A CN201910841370A CN110528717A CN 110528717 A CN110528717 A CN 110528717A CN 201910841370 A CN201910841370 A CN 201910841370A CN 110528717 A CN110528717 A CN 110528717A
- Authority
- CN
- China
- Prior art keywords
- elastic body
- pulling plate
- magnetic rheology
- rheology elastic
- diagonal brace
- 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.)
- Granted
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
-
- 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
- F16F9/535—Magnetorheological [MR] fluid dampers
Abstract
A kind of diagonal brace damper based on magnetic rheology elastic body, is related to antishock device technical field.The diagonal brace damper based on magnetic rheology elastic body includes at least two first pulling plates being sequentially arranged from top to bottom, the second pulling plate that can be moved in the horizontal direction is equipped between two adjacent the first pulling plates, at least one magnetic rheology elastic body component is equipped between second pulling plate and the first adjacent pulling plate, magnetic rheology elastic body component is symmetrically arranged in the two sides up and down of corresponding second pulling plate；Magnetic rheology elastic body component includes magnetic rheology elastic body, the coil arranged and be sheathed on magnetic rheology elastic body in the horizontal direction and the sleeve arranged and be sheathed on coil in the horizontal direction, and the both ends of magnetic rheology elastic body are connected with corresponding first pulling plate and the second pulling plate respectively；First pulling plate, the second pulling plate and sleeve are made of ferrimagnet.The diagonal brace damper based on magnetic rheology elastic body of the application can change the natural frequency of vibration of itself, avoid generating resonance reduction damping effect when earthquake occurs.
Description
Technical field
This application involves antishock device fields, in particular to a kind of diagonal brace damper based on magnetic rheology elastic body.
Background technique
Frame system with support can provide biggish rigidity for structure, and the diagonal brace damper in this support is applied to be
Based on a kind of energy-consuming device with viscoelastic rubber material, consumption geological process can be absorbed in the energy of building, thus
Damage of the earthquake to building is reduced, is a kind of efficient damping device, there is practical, the simple and economical high efficiency of structure
The features such as.
Applying the damper on diagonal brace at present is mostly traditional rubber material, even if having carried out repeatedly excellent in structure
Change, also fails to change the fixed disadvantage of its rigidity, resonance is easy to happen when seismic frequency is close with natural frequency of structures, at this time
Traditional diagonal brace damper is not only difficult to play damping effect, or even will cause more serious destruction.
Summary of the invention
The application's is designed to provide a kind of diagonal brace damper based on magnetic rheology elastic body, can change itself knot
The natural frequency of vibration of structure avoids generating resonance reduction damping effect when earthquake occurs.
Embodiments herein is achieved in that
The embodiment of the present application provides a kind of diagonal brace damper based on magnetic rheology elastic body comprising successively cloth from top to bottom
At least two first pulling plates set are equipped with the second pulling plate that can be moved in the horizontal direction between two adjacent the first pulling plates, the
At least one magnetic rheology elastic body component, the symmetrical cloth of magnetic rheology elastic body component are equipped between two pulling plates and the first adjacent pulling plate
It is placed in the two sides up and down of corresponding second pulling plate；Magnetic rheology elastic body component includes magnetic rheology elastic body, arranges in the horizontal direction
And it is sheathed on the coil on magnetic rheology elastic body and arranges in the horizontal direction and be sheathed on the sleeve on coil, magnetic rheology elastic body
Both ends connected respectively with corresponding first pulling plate and the second pulling plate；First pulling plate, the second pulling plate and sleeve are by ferromagnetism material
Material is made.
In some optional embodiments, the first pulling plate is equipped with the first card connected with corresponding magnetic rheology elastic body
Block.
In some optional embodiments, the second pulling plate is equipped with the second card connected with corresponding magnetic rheology elastic body
Block.
In some optional embodiments, there is the gap of annular between magnetic rheology elastic body and corresponding coil.
In some optional embodiments, sleeve is connected with corresponding second pulling plate.
In some optional embodiments, offered on sleeve for the through-hole for winding wiring.
In some optional embodiments, offered on sleeve for the through-hole for winding wiring.
The beneficial effect of the application is: the diagonal brace damper provided by the embodiments of the present application based on magnetic rheology elastic body includes
At least two first pulling plates arranged from top to bottom are equipped with can move in the horizontal direction the between two adjacent the first pulling plates
Two pulling plates are equipped at least one magnetic rheology elastic body component, magnetic rheology elastic body between the second pulling plate and the first adjacent pulling plate
Component is symmetrically arranged in the two sides up and down of corresponding second pulling plate；Magnetic rheology elastic body component includes magnetic rheology elastic body, Yan Shui
Square to arranging and be sheathed on the coil on magnetic rheology elastic body and arrange in the horizontal direction and be sheathed on the sleeve on coil, magnetic
The both ends of magnetorheological elastomer are connected with corresponding first pulling plate and the second pulling plate respectively；First pulling plate, the second pulling plate and sleeve are equal
It is made of ferrimagnet.Diagonal brace damper provided by the present application based on magnetic rheology elastic body can change oneself of self structure
Vibration frequency avoids generating resonance reduction damping effect when earthquake occurs.
Detailed description of the invention
Technical solution in ord to more clearly illustrate embodiments of the present application, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only some embodiments of the application, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the cross-sectional view for the diagonal brace damper based on magnetic rheology elastic body that the application first embodiment provides；
Fig. 2 is the cross-sectional view of hatching at A-A in Fig. 1；
Fig. 3 is the section view magnetic circuit signal for the diagonal brace damper based on magnetic rheology elastic body that the application first embodiment provides
Figure；
Fig. 4 is the cross-sectional view for the diagonal brace damper based on magnetic rheology elastic body that the application second embodiment provides.
In figure: 100, the first pulling plate；101, the first fixture block；120, the second pulling plate；121, the second fixture block；130, magnetorheological bullet
Property body；140, coil；150, frame；151, partition；152, sleeve；153, through-hole；160, gap.
Specific embodiment
To keep the purposes, technical schemes and advantages of the embodiment of the present application clearer, below in conjunction with the embodiment of the present application
In attached drawing, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described embodiment is
Some embodiments of the present application, instead of all the embodiments.The application being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiments herein provided in the accompanying drawings is not intended to limit below claimed
Scope of the present application, but be merely representative of the selected embodiment of the application.Based on the embodiment in the application, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model of the application protection
It encloses.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present application, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, or be somebody's turn to do
Application product using when the orientation or positional relationship usually put, be merely for convenience of description the application and simplify description, without
It is that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, therefore not
It can be interpreted as the limitation to the application.In addition, term " first ", " second ", " third " etc. are only used for distinguishing description, and cannot manage
Solution is indication or suggestion relative importance.
In addition, the terms such as term "horizontal", "vertical", " pendency " are not offered as requiring component abswolute level or pendency, and
It is that can be slightly tilted.It is not to indicate the structure if "horizontal" only refers to that its direction is more horizontal with respect to for "vertical"
It has to fully horizontally, but can be slightly tilted.
In the description of the present application, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one
Connect to body；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be indirect by intermediary
It is connected, can be the connection inside two elements.For the ordinary skill in the art, on being understood with concrete condition
State the concrete meaning of term in this application.
In this application unless specifically defined or limited otherwise, fisrt feature second feature "upper" or "lower"
It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through it
Between other characterisation contact.Moreover, fisrt feature includes the first spy above the second feature " above ", " above " and " above "
Sign is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " include that fisrt feature is directly below and diagonally below the second feature, or is merely representative of
First feature horizontal height is less than second feature.
With reference to embodiments the feature to the diagonal brace damper based on magnetic rheology elastic body of the application and performance make into
The detailed description of one step.
As depicted in figs. 1 and 2, the embodiment of the present application provides a kind of diagonal brace damper based on magnetic rheology elastic body, packet
Include the first pulling plate 100, the second pulling plate 120 and the first pulling plate 100 being sequentially arranged from top to bottom, two piece of first pulling plate 100 and
Two pulling plates 120 are parallel to each other and arrange in the horizontal direction, the second pulling plate 120 can with respect to two piece first pulling plate 100 along level side
To movement, it is all provided between the second pulling plate 120 and every piece of first pulling plate 100 there are three magnetic rheology elastic body component, six magnetorheological
Elastomeric components are symmetrically arranged in the two sides up and down of the second pulling plate 120.
Wherein, each magnetic rheology elastic body component includes magnetic rheology elastic body 130, arranges and be sheathed in the horizontal direction
It coil 140 on magnetic rheology elastic body 130 and arranges in the horizontal direction and is sheathed on the sleeve 152 on coil 140, the second pulling plate
The frame 150 arranged in the horizontal direction is respectively equipped between 120 and two piece of first pulling plate 100, set in each frame 150 there are two
Partition 151, each frame 150 and corresponding two partitions 151 are enclosed three above-mentioned sleeves 152 respectively；Second pulling plate
120 two sides convex to form three the second fixture blocks 121 respectively, six the second fixture blocks 121 respectively with six magnetic rheology elastic bodies 130
One end connection, two piece of first pulling plate 100 convex to form three the first fixture blocks towards the side of magnetic rheology elastic body 130 respectively
101, six the first fixture blocks 101 are connect with the other end of six magnetic rheology elastic bodies 130 respectively；Magnetic rheology elastic body 130 and right
There is the gap 160 of annular between the coil 140 answered, open up that there are four for for the logical of 140 wiring of coil on each sleeve 152
Hole 153, coil 140 are connected with the electric wire (not shown) for stretching out through-hole 153；Two piece of first pulling plate 100, the second pulling plate
120, the first fixture block 101, the second fixture block 121, sleeve 152 are steel, and magnetic rheology elastic body 130 is by silicon rubber and carbonyl iron dust
It is prepared.
Diagonal brace damper provided by the embodiments of the present application based on magnetic rheology elastic body is installed on the oblique of building frame construction
In support, and one end of two piece of first pulling plate 100 and the second pulling plate 120 is connect with building frame construction respectively.It should be based on magnetorheological
It can make to generate horizontal direction between two piece of first pulling plate 100 and the second pulling plate 120 when the diagonal brace damper stress of elastomer
Relative displacement, due to passing through sequentially connected first fixture block 101 and first between two piece of first pulling plate 100 and the second pulling plate 120
The corresponding magnetic rheology elastic body 130 of fixture block 101 and second fixture block 121 corresponding with the magnetic rheology elastic body 130 link together,
To make to drive each magnetic rheology elastic body 130 is mobile in the horizontal direction shear-deformable generation occurs when the second pulling plate 120 is mobile
Shearing force.When the frame structure of building is by geological process, building structure is made upper lower floor plate generate phase by horizontal force action
To horizontal displacement, axial push-pull can be also generated by the diagonal brace that relative storey displacement acts on connection upper and lower level floor, to make to be arranged in tiltedly
The diagonal brace damper based on magnetic rheology elastic body in support is made the second pulling plate 120 and two piece of first pulling plate by horizontal force action
Relative displacement is generated between 100, is caused each magnetic rheology elastic body 130 by horizontal shearing force, is made magnetic rheology elastic body 130
Shearing force building structure is passed to by diagonal brace, provide damping force for building structure, reduce the destruction that earthquake generates, realize
The effect of elastic damping.
In addition, as shown in figure 3, when using external cord in each magnetic rheology elastic body component coil 140 be powered when,
The magnetic induction line of generation sequentially passes through magnetic rheology elastic body 130, the first fixture block 101, the first pulling plate 100, sleeve 152, the second pulling plate
120, sleeve 152, the first pulling plate 100, the first fixture block 101, magnetic rheology elastic body 130, the second fixture block 121, the second pulling plate 120,
Second fixture block 121 and magnetic rheology elastic body 130 are formed into a loop, can when user, which changes, is passed through the input current of coil 140
Change the mechanical property of corresponding magnetic rheology elastic body 130, to change the self-vibration of the diagonal brace damper based on magnetic rheology elastic body
Frequency avoids the structural strength that resonance reduction itself occurs with earthquake, the amplitude generated when to preferably adapting to earthquake and shape
Variation, plays damping.
In some alternative embodiments, the magnetic rheology elastic body group being arranged between the first pulling plate 100 and the second pulling plate 120
The quantity of part can also be 1,2,3,4,5,6,7,8,9,10 or 10 or more.Optionally,
It both can be in straight line cloth when each magnetic rheology elastic body component arrangement being arranged between one pulling plate 100 and the second pulling plate 120
It sets, it can also be in the matrix arrangements of at least 2 rows and at least 2 column；Optionally, each magnetic rheology elastic body component use 1 solely
Vertical steel framework 150 is as the sleeve 152 being sheathed on coil 140, it is of course also possible to use steel framework 150 and at least 1
A steel partition 151 in frame 150 cooperatively forms the sleeve 152 that at least two is sheathed on coil 140.It is some can
In the embodiment of choosing, sleeve 152 can not also be connect with the second pulling plate 120, but in the first pulling plate 100 and the second pulling plate 120
Between moveable sleeve 152 is set.Optionally, magnetic rheology elastic body 130 can also be using rubbers such as natural rubber, butadiene rubbers
Glue replaces silicon rubber, and is replaced iron powder using cobalt powder, nickel powder, while portion can also be added when preparing magnetic rheology elastic body 130
Divide auxiliary agent such as dispersing agent etc.；Optionally, ferrimagnet can also select the alloy of Fe.
In some alternative embodiments, the diagonal brace damper based on magnetic rheology elastic body can also include from top to bottom according to
Three, four, five or five or more the first pulling plates 100 of secondary arrangement, and between every two adjacent first pulling plate 100
One piece of second pulling plate 120 that can be mobile relative to the first pulling plate 100 is set, and in every piece of second pulling plate 120 and two pieces the adjacent
At least one magnetic rheology elastic body component, the magnetic rheology elastic body group positioned at 120 two sides of the second pulling plate are equipped between one pulling plate 100
Part is arranged symmetrically relative to second pulling plate 120.
By taking the diagonal brace damper shown in Fig. 4 based on magnetic rheology elastic body as an example comprising be sequentially arranged from top to bottom
Three the first pulling plates 100, one piece is provided between every two adjacent first pulling plate 100 can be mobile relative to the first pulling plate 100
Second pulling plate 120, and be respectively equipped between every piece of second pulling plate 120 and two piece of first adjacent pulling plate 100 three it is magnetorheological
Elastomeric components, the two sides up and down of each second pulling plate 120 are equipped with six magnetic rheology elastic body components being arranged symmetrically；Each
Magnetic rheology elastic body component includes magnetic rheology elastic body 130, arranges in the horizontal direction and is sheathed on magnetic rheology elastic body 130
Coil 140 and arrange and be sheathed on the sleeve 152 on coil 140 in the horizontal direction, the second pulling plate 120 and two piece of first pulling plate
It is respectively equipped with the frame 150 arranged in the horizontal direction between 100, is set in each frame 150 there are two partition 151, each frame
150 and corresponding two partitions 151 be enclosed three above-mentioned sleeves 152 respectively；Distinguish the two sides of each second pulling plate 120
Convex to form three the second fixture blocks 121, six the second fixture blocks 121, six magnetorheological bullets with 120 two sides of the second pulling plate respectively
Property body 130 one end connection, each first pulling plate 100 towards the side of magnetic rheology elastic body 130 convex to form respectively with it is corresponding
Magnetic rheology elastic body 130 connect the first fixture block 101；There is annular between magnetic rheology elastic body 130 and corresponding coil 140
Gap 160, open up on each sleeve 152 there are four for the through-hole 153 for 140 wiring of coil, being connected with for coil 140 is stretched
The electric wire (not shown) of through-hole 153 out；First pulling plate 100, the second pulling plate 120, the first fixture block 101, the second fixture block 121,
Sleeve 152 is steel, and magnetic rheology elastic body 130 is prepared by silicon rubber and carbonyl iron dust.It should be based on magnetic rheology elastic body
Diagonal brace damper have three piece of first pulling plate 100 and two pieces can the second pulling plates 120 that move of opposite first pulling plate 100, the
When two pulling plates 120 generate relative displacement relative to the first pulling plate 100, each magnetic rheology elastic body 130 can be made by level
Shearing force, so that the shearing force of magnetic rheology elastic body 130 be made by diagonal brace to pass to building structure to provide biggish damping force,
Effectively to reduce the destruction of earthquake generation.
Embodiments described above is some embodiments of the present application, instead of all the embodiments.The reality of the application
The detailed description for applying example is not intended to limit claimed scope of the present application, but is merely representative of the selected implementation of the application
Example.Based on the embodiment in the application, obtained by those of ordinary skill in the art without making creative efforts
Every other embodiment, shall fall in the protection scope of this application.
Claims (6)
1. a kind of diagonal brace damper based on magnetic rheology elastic body, which is characterized in that it include be sequentially arranged from top to bottom to
Lack two the first pulling plates, the second pulling plate that can be moved in the horizontal direction is equipped between first pulling plate of adjacent two, it is described
At least one magnetic rheology elastic body component, the magnetic rheology elastic body are equipped between second pulling plate and adjacent first pulling plate
Component is symmetrically arranged in the two sides up and down of corresponding second pulling plate；The magnetic rheology elastic body component includes magnetorheological elasticity
It body, the coil arranged and be sheathed on the magnetic rheology elastic body in the horizontal direction and arranges and is sheathed on described in the horizontal direction
Sleeve on coil, the both ends of the magnetic rheology elastic body connect with corresponding first pulling plate and second pulling plate respectively
It connects；First pulling plate, second pulling plate and the sleeve are made of ferrimagnet.
2. the diagonal brace damper according to claim 1 based on magnetic rheology elastic body, which is characterized in that first pulling plate
Equipped with the first fixture block connected with the corresponding magnetic rheology elastic body.
3. the diagonal brace damper according to claim 1 based on magnetic rheology elastic body, which is characterized in that second pulling plate
Equipped with the second fixture block connected with the corresponding magnetic rheology elastic body.
4. the diagonal brace damper according to claim 1 based on magnetic rheology elastic body, which is characterized in that the magnetorheological bullet
Property body and the corresponding coil between have annular gap.
5. the diagonal brace damper according to claim 1 based on magnetic rheology elastic body, which is characterized in that the sleeve with it is right
Second pulling plate connection answered.
6. the diagonal brace damper according to claim 1 based on magnetic rheology elastic body, which is characterized in that opened on the sleeve
Equipped with for the through-hole for the winding wiring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910841370.0A CN110528717B (en) | 2019-09-06 | 2019-09-06 | Inclined strut damper based on magnetorheological elastomer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910841370.0A CN110528717B (en) | 2019-09-06 | 2019-09-06 | Inclined strut damper based on magnetorheological elastomer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110528717A true CN110528717A (en) | 2019-12-03 |
| CN110528717B CN110528717B (en) | 2021-03-23 |
Family
ID=68667399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910841370.0A Active CN110528717B (en) | 2019-09-06 | 2019-09-06 | Inclined strut damper based on magnetorheological elastomer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110528717B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112196939A (en) * | 2020-10-09 | 2021-01-08 | 武汉理工大学 | Cultural relic intelligent shock insulation support based on magnetorheological elastomer |
| CN112943838A (en) * | 2021-01-30 | 2021-06-11 | 上海工程技术大学 | Rigidity and strength adjustable magnetorheological elastomer shock absorber |
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| JP2014052044A (en) * | 2012-09-07 | 2014-03-20 | Tohoku Univ | Mr damper |
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| CN108361311A (en) * | 2018-01-23 | 2018-08-03 | 长安大学 | A kind of mode MR elastomer damper |
| CN207687250U (en) * | 2017-11-21 | 2018-08-03 | 山东科技大学 | A kind of MR elastomer vibration isolator based on shearing-tension and compression pattern |
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| WO2002090105A1 (en) * | 2001-05-10 | 2002-11-14 | University Of Toledo | Actively controlled impact elements |
| CN1861927A (en) * | 2006-06-07 | 2006-11-15 | 东南大学 | High lossing energy composite magnetorheopectic damping device |
| CN1869470A (en) * | 2006-06-21 | 2006-11-29 | 天津大学 | Multistep assemblied anti-settle magnetic rheological damper |
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| CN112943838A (en) * | 2021-01-30 | 2021-06-11 | 上海工程技术大学 | Rigidity and strength adjustable magnetorheological elastomer shock absorber |
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| Publication number | Publication date |
|---|---|
| CN110528717B (en) | 2021-03-23 |
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