CN206540778U - A kind of test device biaxial stretch-formed for active bio - Google Patents
A kind of test device biaxial stretch-formed for active bio Download PDFInfo
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- CN206540778U CN206540778U CN201720232186.2U CN201720232186U CN206540778U CN 206540778 U CN206540778 U CN 206540778U CN 201720232186 U CN201720232186 U CN 201720232186U CN 206540778 U CN206540778 U CN 206540778U
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- liquor box
- active bio
- biaxial stretch
- test device
- servobcylinder
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Abstract
The utility model discloses a kind of test device biaxial stretch-formed for active bio, including liquor box, corner is provided with four baffle plates for reducing solution evaporation at the top of described liquor box, equipped with the PBS cushioning liquid for keeping biological tissue activity inside liquor box, liquor box bottom is provided with the cylindrical lens groove for being used for placing water-proof CCD camera；A support frame is provided with described baffle plate, each a servoBcylinder is fixed with the four direction of described support frame, each servoBcylinder front end is connected with force snesor, connector successively, four connectors are connected with four long lever tops being vertically provided inside liquor box respectively, the middle part support plate of point action is connected in the middle part of four long levers, four long lever bottoms are connected to the fixture of fixed biological tissue.
Description
Technical field
The utility model is related to biomechanical property testing field, more particularly to a kind of to be used for active bio tissue twin shaft
The test device of stretching and the application in other soft material fields.
Background technology
In virtual operation physical modeling, accurate physical model is vital, structure to the reliability of surgical simulation
The basis that rationally and accurately constitutive equation is physical model is built, due to the anisotropy of biological tissue, biaxial tension experiment can
For measurement each of biological organization material constitutive equation is determined to mechanical behavior and material property.On the other hand, in biology
Organize in vitro Mechanics Performance Testing, the activity of tissues in vitro can not ensure the problem in always test.
There is clearly disadvantageous and limitation in existing biaxial stretch-formed experimental provision, some specially measure material mechanical performance
Biaxial stretch-formed device can not be applied to active bio tissue test, such as application publication number is CN105092371A,
The utility model patents such as CN102645371A, CN104913974A.Wherein application publication number is the practical new of CN105092371A
Type is proposed and installed on a kind of adjustable biaxial stretch-formed fixture of stretch ratio, including base, drawing plate and installing plate, left and right base
Left and right lead, regulation lead can change biaxial stretch-formed ratio.The utility model possesses stretching precision height, simple in construction
The advantages of, but application category is confined to composite etc., it is impossible to suitable for active bio organization material.
A kind of biaxial tension-compression strength device disclosed in application publication number CN102645371A utility model patent, including machine
Frame, the first screw mandrel, the second leading screw, the first drive mechanism and the second drive mechanism, both sides are employed on each group of draw direction
Same ball-screw of different curls, can effectively realize the biaxial tension to test specimen different proportion, and improve test
As a result precision.Although the structure design of above-mentioned utility model is quite reasonable, utility model can not be applied to active bio group
The test knitted.It is biaxial stretch-formed-tired that application publication number CN104913974A utility model is related to material Micro Mechanical Properties
Test system, by the portion such as accurate loading-gear unit, tired unit, mechanics and deformation signal detection unit, specimen holder unit
It is grouped into, uniaxial tensile test, biaxial stretch-formed test, testing fatigue etc. can be realized respectively, and have well with light microscope
Compatibility, the rules such as the heterogeneous microstructure of dynamic studies material and deformation damage mechanism can be carried out.Although the practicality is new
Type can realize single biaxial stretch-formed and testing fatigue, but utility model can not be applied to the test of active bio tissue.
The drawbacks of for each utility model patent above and deficiency, it is proposed that one kind is used for active bio tissue twin shaft and drawn
The test device stretched.
Through the above search, it has been found that above technical scheme can not influence novelty of the present utility model；And above specially
Being mutually combined for sharp file can not destroy creativeness of the present utility model.
Utility model content
The purpose of this utility model is to provide one kind can carry out in vitro single, double axle stretching mechanical to active bio tissue
The extension test platform that can be tested.
In order to realize the above object the technical solution adopted in the utility model is as follows：
A kind of test device biaxial stretch-formed for active bio tissue, including liquor box, at the top of described liquor box
Corner is provided with four baffle plates for reducing solution evaporation, and liquor box inside is molten equipped with the PBS cushioning liquid for keeping biological tissue activity
Liquid case bottom is provided with the cylindrical lens groove for being used for placing water-proof CCD camera；A support frame is provided with described baffle plate,
Each be fixed with a servoBcylinder on the four direction of described support frame, each servoBcylinder front end successively with force snesor, even
Fitting is connected, and four connectors are connected with four long lever tops being vertically provided inside liquor box respectively, four long levers
Middle part has connected the middle part support plate of point action, and four long lever bottoms are each connected to the fixture of fixed biological tissue.
Further, described liquor box is that a top by one piece of PMMA bottom plate and four pieces of PMMA side plates bondings is opened
Cylindrical lens groove is bonded on mouth casing, bottom plate, for laying water-proof CCD camera, to shoot biaxial stretch-formed bioactivity tissue
Deformation.Appropriate PBS cushioning liquid is added in liquor box, for keeping biological tissue activity.
Further, described baffle plate is formed by a PMMA top plate and two orthogonal PMMA side plates bondings, its point
Four angles not with liquor box cooperate, and when four baffle plates are arranged on four angles of liquor box, the top plate of four baffle plates exists
One cross gap is formed on the top of liquor box, and the effect of the baffle plate is the volatilization for reducing solution in liquor box, is prevented simultaneously
Only solution is splashed on support frame.
Further, described support frame is a supporter being made up of three-back-shaped casing, placed inside control circuit, four
There is servoBcylinder to be bolted above side midline, the expansion link front end of servoBcylinder and force snesor and connector phase successively
Even, connector is promoted to stretch out same distance, and the change of the institute of measurement in real time stress by controller control servoBcylinder.In twin shaft experiment
When drive four servoBcylinders while stretching out equidistant；The symmetrical servoBcylinder of two of which is driven in uniaxial tests while stretching out phase
Deng length.
Further, described long lever is four levers punched by strip aluminium alloy plate, wherein top is hinged
Hole is bolted connector, and bottom hinge hole is bolted fixture, and middle part is got multiple equidistant hinge holes and led to
The middle part support plate described in bolt connection is crossed, is hinged by different hinge holes and middle part support plate and adapts to different size of biology
The biaxial tension-compression strength of active material, as well as lever principle, can apply more accurate displacement.When servoBcylinder is promoted
When force snesor and connector stretching, connector promotes long lever, the activity clamped by fulcrum of middle part support plate to bottom jig
Biological tissue is stretched.
Further, described middle part support plate be one by one piece of square aluminium alloy plate and four connectors at four side midpoints
The part that place is welded, it acts on the fulcrum for being treated as four long levers, and the active bio tissue of long lever bottom is carried out
Stretching.
Further, described fixture is four fixtures being made up of PLA material, and its structure is a U type structure, U types
The openend of structure carries out the clamping of active bio tissue, and active bio tissue, U types are bolted in openend both sides
The non-openend of structure is fixed by bolt with long lever bottom, and fixture keeps living in drawing process with long lever angle change
The balance of property biological tissue.
Further, application of the foregoing biaxial stretch-formed test device in soft material stretching experiment.
The utility model has the advantages that：
1st, device simple structure, is detachably easy to process and safeguard, can be conveniently accomplished test mission.
2nd, the utility model can effectively realize that carrying out single shaft, biaxial tension-compression strength to bioactivity tissue appoints
Business ensures the activity of biological tissue simultaneously；Specifically, when twin shaft is tested, controller drives four servoBcylinders simultaneously
Stretch out equidistant；In uniaxial tests, controller drives the symmetrical servoBcylinder of two of which while stretching out equal length.
3rd, due to using lever principle, the hinge hole of diverse location on long lever is hinged by middle part support plate, can
To apply more accurate displacement, with enough loading accuracies.
4th, when liquor box is vacant, device can also carry out the single, double axle stretching experiment of other soft materials.
Brief description of the drawings
The accompanying drawing for constituting the part of the application is used for providing further understanding to of the present utility model, of the present utility model
Schematic description and description is used to explain the utility model, does not constitute to improper restriction of the present utility model.
Fig. 1 is the utility model structural representation.
Fig. 2 is internal structure schematic diagram.
Fig. 3 is liquor box top view.
Fig. 4 is the structure chart of fixture.
Description of reference numerals：
1st, liquor box；2nd, baffle plate；3rd, support frame；4th, servoBcylinder；5th, force snesor；6th, connector；7th, long lever；8th, middle part
Support plate；9th, fixture；10th, camera lens groove.
Embodiment
In order that those skilled in the art more fully understand the technical solution of the utility model, below in conjunction with the accompanying drawings to this reality
It is described in detail with new, the description of this part is only exemplary and explanatory, is not had to protection domain of the present utility model
Any limitation.
It is noted that described further below is all exemplary, it is intended to provide further instruction to the application.Unless another
Indicate, all technologies used herein and scientific terminology are with usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in this manual using term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
Double all tensile test apparatus described in the utility model include liquor box, and corner is provided with the top of described liquor box
Four are reduced inside the baffle plate that solution evaporates, liquor box equipped with the PBS cushioning liquid for keeping biological tissue activity, liquor box bottom
Provided with the cylindrical lens groove for placing water-proof CCD camera；A support frame, described branch are provided with described baffle plate
A servoBcylinder each is fixed with the four direction of support, each servoBcylinder front end is connected with force snesor, connector successively,
Four connectors are connected with four long lever tops being vertically provided inside liquor box respectively, are connected in the middle part of four long levers
The middle part support plate of point action, four long lever bottoms are each connected to fix the fixture of stretching thing.
Specifically, respectively as shown in Figure 1, Figure 2, Figure 3, Figure 4, the utility model is right exemplified by stretching active bio tissue
Biaxial stretch-formed test device, is specifically described disclosed in the utility model：It include liquor box 1, baffle plate 2, support frame 3,
ServoBcylinder 4, force snesor 5, connector 6, long lever 7, middle part support plate 8, fixture 9, camera lens groove 10；
Overall structure is：The top corner of liquor box 1 is filled provided with four baffle plates 2 for reducing solution evaporation, the inside of liquor box 1
There is the PBS cushioning liquid for keeping biological tissue activity, the bottom of liquor box 1 is provided with the cylindrical lens for being used for placing water-proof CCD camera
Groove 10；It is to be bolted four servoBcylinders 4 on support frame 3, support frame 3 in the top of liquor box 1, is watched by controller control
Distance of the cylinder 4 according to the different mobile settings of experiment is taken, each front end of servoBcylinder 4 is connected with force snesor 5, connector 6 successively,
Four connectors 6 are each bolted with four tops of long lever 7 respectively, and four middle parts of long lever 7 are common by bolt
One connected point action middle part support plate 8, four bottoms of long lever 7 are used for fixed biological each via bolt connection one
The structure of 9 four fixtures of fixture of tissue is entirely different.
Wherein, liquor box 1 is one by one piece of PMMA bottom plate and the opening casing of four pieces of PMMA side plates bondings, bottom plate
Upper bonding cylindrical lens groove 10, for laying water-proof CCD camera, to shoot the deformation feelings of biaxial stretch-formed bioactivity tissue
Condition.
Specifically, the center of position of the cylindrical lens groove 10 on bottom plate just with the cross gap of the formation of baffle plate 2
Position is relative up and down, and camera camera lens just to bioactivity tissue.
Appropriate PBS cushioning liquid is added in liquor box 1, for keeping biological tissue activity.
Further, baffle plate 2 from a PMMA top plate and two PMMA side plates bonding can with liquor box, two PMMA
Side plate is mutually perpendicular to, and PMMA top plates are arranged on the top of side plate；Match somebody with somebody at angle of the vertical angle of three board formation just with liquor box
Close, when liquor box coordinates four baffle plates 2, a cross gap is formd at the top of liquor box 1, baffle plate 2 is arranged such
Effect be reduce liquor box in solution volatilization, while preventing solution to be splashed on support frame 3.
Further, support frame 3 is a supporter being made up of three-back-shaped casing, placed inside control circuit, support
Four faces at the top of body（East, West, South, North face）There is servoBcylinder 4 to be bolted above upper midline, the expansion link of servoBcylinder 4
Front end is sequentially connected with force snesor 5 and connector 6, promotes connector 6 to stretch out same distance by controller control servoBcylinder 4,
And the change of the institute of measurement in real time stress.
Four servoBcylinders 4 are driven when twin shaft is tested while stretching out equidistant；Two of which pair is driven in uniaxial tests
The servoBcylinder 4 of title stretches out equal length simultaneously.
Further, long lever 7 is four levers punched by strip aluminium alloy plate, wherein top hinge hole leads to
Bolt connection connector 6 is crossed, bottom hinge hole is bolted fixture 9, and middle part is got multiple equidistant hinge holes and passed through
Middle part support plate 8 described in bolt connection, is hinged by different hinge holes and middle part support plate 8 and adapts to different size of biology
The biaxial tension-compression strength of active mass, as well as lever principle, can apply more accurate displacement.When servoBcylinder 4 is pushed away
When dynamic pickup 5 and the stretching of connector 6, connector 6 promotes long lever 7, is that fulcrum is pressed from both sides to bottom jig 9 with middle part support plate 8
The active bio tissue held is stretched.
Middle part support plate 8 is one and is welded by one piece of square aluminium alloy plate and four connectors 6 in four side midpoints
Part, it, which is acted on, is treated as the fulcrums of four long levers 7, and the active bio tissue of the bottom of long lever 7 is stretched.
Fixture 9 is as shown in figure 4, be four particular jigs being made up of PLA material, its structure is a U type structure, U
The openend of type structure carries out the clamping of active bio tissue, and active bio tissue, U are bolted in openend both sides
The non-openend of type structure is fixed by bolt with the bottom of long lever 7, and fixture keeps drawing process with the angle change of long lever 7
The balance of middle active bio tissue.
By above description, it is known that the utility model achieves following effect：
1st, device simple structure, only by 10 parts, i.e.,（Liquor box 1, baffle plate 2, support frame 3
ServoBcylinder 4, force snesor 5, connector 6, long lever 7, middle part support plate 8, fixture 9, camera lens groove
10）It is removably attachable to together, be achieved that whole experiment, due to being dismountable connection between each part,
Therefore it is easy to process and safeguards, test mission can be conveniently accomplished.
2nd, the utility model can effectively realize that carrying out single shaft, biaxial tension-compression strength to bioactivity tissue appoints
Business ensures the activity of biological tissue simultaneously；Specifically, when twin shaft is tested, controller drives four servoBcylinders simultaneously
Stretch out equidistant；In uniaxial tests, controller drives the symmetrical servoBcylinder of two of which while stretching out equal length.
3rd, the utility model is hinged diverse location on long lever due to using lever principle by middle part support plate
Hinge hole, can apply more accurate displacement, with enough loading accuracies.
4th, when liquor box is vacant, device can also carry out the single, double axle stretching experiment of other soft materials.
It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned one exemplary embodiment, and
And in the case of without departing substantially from spirit or essential attributes of the present utility model, can realize that this practicality is new in other specific forms
Type.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and is nonrestrictive, this practicality is new
The scope of type limits by appended claims rather than described above, it is intended that the equivalency fallen in claim is contained
All changes in justice and scope are included in the utility model.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art should
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It may be appreciated other embodiment.
Claims (9)
1. a kind of test device biaxial stretch-formed for active bio, it is characterised in that including liquor box, in described liquor box
Top corner is provided with four baffle plates for reducing solution evaporation, and liquor box inside, which is equipped with, keeps the PBS bufferings of biological tissue activity molten
Liquid, liquor box bottom is provided with the cylindrical lens groove for being used for placing water-proof CCD camera；A branch is provided with described baffle plate
A servoBcylinder is each fixed with support, the four direction of described support frame, each servoBcylinder front end is sensed with power successively
Device, connector are connected, and four connectors are connected with four long lever tops being vertically provided inside liquor box respectively, four long
Its intermediate part has connected the middle part support plate of point action, and four long lever bottoms are connected to the fixture of fixed biological tissue.
2. it is used for the biaxial stretch-formed test device of active bio as claimed in claim 1, it is characterised in that described liquor box
For one cylinder is bonded on one piece of PMMA bottom plate and the open top casing of four pieces of PMMA side plates bondings, the bottom plate
Camera lens groove, for laying water-proof CCD camera, to shoot the deformation of biaxial stretch-formed bioactivity tissue.
3. it is used for the biaxial stretch-formed test device of active bio as claimed in claim 1, it is characterised in that described liquor box
It is middle to add appropriate PBS cushioning liquid, for keeping biological tissue activity.
4. as claimed in claim 1 for the biaxial stretch-formed test device of active bio, it is characterised in that described baffle plate by
One PMMA top plate and two orthogonal PMMA side plates bondings are formed, and it cooperates with four angles of liquor box respectively,
When four baffle plates are arranged on four angles of liquor box, the top plate of four baffle plates forms a cross-formed slits at the top of liquor box
Gap.
5. it is used for the biaxial stretch-formed test device of active bio as claimed in claim 1, it is characterised in that described support frame
For a supporter being made up of three-back-shaped casing, placed inside control circuit, the midline in four faces in top of supporter is equal
A servoBcylinder is fixed with, expansion link front end and the force snesor and connector of the servoBcylinder are sequentially connected, by controller control
ServoBcylinder processed promotes connector to stretch out the distance of setting, and measures the change of institute's stress in real time.
6. it is used for the biaxial stretch-formed test device of active bio as claimed in claim 5, it is characterised in that in twin shaft experiment
When, controller drives four servoBcylinders while stretching out equidistant；In uniaxial tests, controller drives two of which symmetrically to be watched
Cylinder is taken while stretching out equal length.
7. it is used for the biaxial stretch-formed test device of active bio as claimed in claim 1, it is characterised in that described long lever
For four levers punched by strip aluminium alloy plate, wherein top hinge hole is bolted connector, bottom is cut with scissors
Connect hole and be bolted fixture, middle part gets multiple equidistant hinge holes and is bolted described middle part support plate, leads to
Cross different hinge holes and middle part support plate is hinged and adapts to the biaxial tension-compression strength of different size of bioactive materials.
8. it is used for the biaxial stretch-formed test device of active bio as claimed in claim 1, it is characterised in that described middle part branch
Plate is a part being welded by one piece of square aluminium alloy plate and four connectors in four side midpoints.
9. as claimed in claim 1 for the biaxial stretch-formed test device of active bio, it is characterised in that described fixture is
Four fixtures for being made up of PLA material, its structure is a U type structure, and the openend of U type structures carries out active bio tissue
Clamping, active bio tissue is bolted in openend both sides, the non-openend of U type structures passes through bolt and Chang Gang
Bar bottom is fixed, and fixture keeps the balance of active bio tissue in drawing process with long lever angle change.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720232186.2U CN206540778U (en) | 2017-03-10 | 2017-03-10 | A kind of test device biaxial stretch-formed for active bio |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720232186.2U CN206540778U (en) | 2017-03-10 | 2017-03-10 | A kind of test device biaxial stretch-formed for active bio |
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| CN206540778U true CN206540778U (en) | 2017-10-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106706430A (en) * | 2017-03-10 | 2017-05-24 | 山东大学 | Testing device for active biologic biaxial drawing and application thereof in soft material |
-
2017
- 2017-03-10 CN CN201720232186.2U patent/CN206540778U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106706430A (en) * | 2017-03-10 | 2017-05-24 | 山东大学 | Testing device for active biologic biaxial drawing and application thereof in soft material |
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