CN209945864U - Test piece clamp for overall expansion experiment - Google Patents
Test piece clamp for overall expansion experiment Download PDFInfo
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- CN209945864U CN209945864U CN201920771454.7U CN201920771454U CN209945864U CN 209945864 U CN209945864 U CN 209945864U CN 201920771454 U CN201920771454 U CN 201920771454U CN 209945864 U CN209945864 U CN 209945864U
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- annular outer
- cyclic annular
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Abstract
The utility model discloses a test piece anchor clamps for whole inflation experiment, including cyclic annular inner wall, cyclic annular outer wall, first pipeline, the second pipeline, first bottom surface and second bottom surface, cyclic annular inner wall outside is located to cyclic annular outer wall cover, first bottom surface is fixed in cyclic annular inner wall, the first end of cyclic annular outer wall, the second bottom surface is fixed in cyclic annular inner wall, the second end of cyclic annular outer wall, the first end of first pipeline is fixed in on the cyclic annular outer wall, first pipeline and cyclic annular inner wall, annular space between the cyclic annular outer wall is linked together, the first end of second pipeline is fixed in on the cyclic annular inner wall, the first end and the inboard space of cyclic annular inner wall of second pipeline are linked together, the second pipeline passes cyclic annular outer wall and with cyclic annular outer wall sealing connection, be equipped with a plurality of through-holes on the cyclic annular outer wall, a plurality of through-holes are located the part between first bottom surface. The utility model discloses simple structure, adsorption effect is good to can effectively prevent to leak.
Description
Technical Field
The utility model relates to a test piece anchor clamps technical field especially relates to a test piece anchor clamps for whole inflation experiment.
Background
The method is an experimental method for researching the mechanical properties of the soft tissue, and is characterized in that the relation between deformation and internal pressure of the soft tissue material with a characteristic shape is obtained through an overall expansion experiment, and then the mechanical properties of the soft tissue are obtained. The clamp effect of the test piece determines the success or failure of the experiment.
The clamps for the global expansion experiment in the prior art are generally the following:
1. the test piece is sleeved on the clamp, and the test piece is fixed on the pipe sleeve clamp in an operation line bundling mode. The binding strength of the surgical thread directly influences the fixing effect, and the binding is too tight, so that the local damage of the test piece is caused, the deformation of the test piece is influenced, and the error occurs in the experimental result; the binding is too loose, the test piece is not firmly fixed, water leakage occurs, and the experiment fails.
2. The inner surface of the fixed part of the test piece is bonded to the clamp by using the biological adhesive, in the experimental process, the cavity of the test piece is filled with liquid, the internal pressure is large and can exceed 100mmHg, and the bonding strength of the biological adhesive is difficult to meet the requirement.
In order to effectively avoid the problems and ensure the accuracy of the experiment, a test piece clamp for the overall expansion experiment is urgently needed in the market.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a test piece anchor clamps of whole inflation experiment for solve above-mentioned problem, the accuracy of guarantee experiment avoids causing the harm to the test piece.
In order to achieve the above object, the utility model provides a following scheme:
the utility model discloses a test piece clamp for integral expansion experiment, which comprises an annular inner wall, an annular outer wall, a first pipeline, a second pipeline, a first bottom surface and a second bottom surface, wherein the annular outer wall is sleeved outside the annular inner wall, the first bottom surface is fixed at the first end of the annular inner wall and the annular outer wall, the first bottom surface is used for sealing the annular gap between the annular inner wall and the first end of the annular outer wall, the second bottom surface is fixed at the second end of the annular inner wall and the annular outer wall, the second bottom surface is used for sealing the annular gap between the annular inner wall and the second end of the annular outer wall and sealing the second end of the annular inner wall, the first end of the first pipeline is fixed on the annular outer wall, the first pipeline is communicated with the annular inner wall and the annular space between the annular outer walls, the first end of the second pipeline is fixed on the annular inner wall, the first end of the second pipeline is communicated with the space inside the annular inner wall, the second pipeline penetrates through the annular outer wall and is in sealing connection with the annular outer wall, a plurality of through holes are formed in the annular outer wall, and the through holes are located in the portion, between the first bottom face and the first pipeline, of the annular outer wall.
Preferably, the annular outer wall and the annular inner wall are coaxial cylindrical surfaces.
Preferably, the through holes are uniformly distributed in the circumferential direction of the annular outer wall.
Preferably, the second end of the first pipeline is connected with the suction end of the negative pressure pump.
Preferably, the second end of the second pipeline is connected with the injection hole of the injector through a silicone tube.
Preferably, the material is stainless steel or organic glass.
Preferably, the length of the second pipeline is 20-30mm, and the distance between the second pipeline and the second bottom surface is greater than 10 mm.
Preferably, the diameter of the outer wall of the first pipeline is not more than 5mm, and the diameter of the inner wall of the second pipeline is not more than 5 mm.
Preferably, the through holes are not less than 2 rows.
The utility model discloses for prior art gain following technological effect:
in order to solve the problem that a test piece is clamped unstably or improperly in the whole expansion experiment process, the clamp is designed in a layered mode, the negative pressure cavity is connected with an external negative pressure device, and the test piece is fixed on the clamp in a negative pressure adsorption mode; the pressurizing cavity is connected with an external pressurizing device to apply specific pressure to the inner surface of the test piece. In addition, the device can be matched with various test pieces for use, the soft tissue is not damaged by a negative pressure mode, and the clamping effect can be ensured, so that the success rate of the whole expansion experiment is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a sectional view of a specimen holder for the entire expansion test of this embodiment;
FIG. 2 is a front view of a specimen holder for the whole expansion test of this embodiment;
FIG. 3 is a top view of the specimen holder for the whole expansion test of this embodiment;
FIG. 4 is a side view of a specimen holder for the entire expansion test of this embodiment;
in the figure: 1-a pressurizing chamber; 2-a negative pressure cavity; 3-a first pipeline; 4-a second pipeline; 5-through hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model aims at providing a test piece anchor clamps of whole inflation experiment for solve above-mentioned problem, the accuracy of guarantee experiment avoids causing the harm to the test piece.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
As shown in fig. 1 to 4, the present embodiment provides a specimen holder for a global expansion experiment, which includes an annular inner wall, an annular outer wall, a first pipeline 3, a second pipeline 4, a first bottom surface and a second bottom surface, wherein the first pipeline 3 is used for connecting to a negative pressure device, and the second pipeline 4 is used for connecting to a pressurizing device. The annular outer wall is sleeved outside the annular inner wall, the first bottom surface is fixed at the first ends of the annular inner wall and the annular outer wall, and the first bottom surface is used for sealing an annular gap between the annular inner wall and the first end of the annular outer wall. The second bottom surface is fixed on the second ends of the annular inner wall and the annular outer wall, and the second bottom surface is used for sealing the annular gap between the annular inner wall and the second end of the annular outer wall and sealing the second end of the annular inner wall, so that a pressurizing cavity 1 and a negative pressure cavity 2 are formed. The first end of first pipeline 3 is fixed in on the cyclic annular outer wall, and first pipeline 3 is linked together with the annular space between cyclic annular inner wall, the cyclic annular outer wall, and first pipeline 3 links to each other with negative pressure chamber 2. The first end of the second pipeline 4 is fixed on the annular inner wall, the first end of the second pipeline 4 is communicated with the space inside the annular inner wall, the second pipeline 4 penetrates through the annular outer wall and is connected with the annular outer wall in a sealing mode, and the second pipeline 4 is connected with the pressurizing cavity 1. Be equipped with a plurality of through-holes 5 on the cyclic annular outer wall, a plurality of through-holes 5 are located the part between first bottom surface and first pipeline 3 on the cyclic annular outer wall, thereby through-hole 5 is used for adsorbing the test piece with test piece direct contact.
When the device is used, the second end of the first pipeline 3 is connected with the negative pressure device, the second end of the second pipeline 4 is connected with the pressurizing device, the test piece is coated on the clamp and covers the through hole 5. After the negative pressure device is started, the inside of the whole negative pressure cavity 2 is in a negative pressure state, and the test piece is tightly pressed on the annular outer wall by atmospheric pressure. When the expansion test is performed, the pressurizing device is opened to pressurize the pressurizing chamber 1, so that the test piece is expanded.
In this embodiment, the annular outer wall and the annular inner wall are coaxial cylindrical surfaces, and those skilled in the art can set the annular outer wall and the annular inner wall into other shapes such as polygonal prisms according to actual conditions, so that a nested structure of the annular outer wall and the annular inner wall can be formed.
In this embodiment, through-hole 5 evenly distributed on the circumferencial direction of cyclic annular outer wall, evenly distributed makes the adsorption affinity that the test piece received more even, and adsorption effect is good, avoids leaking gas, and the skilled person in the art can also carry out corresponding adjustment according to the actual shape of test piece.
In this embodiment, the second end of the first pipeline 3 is connected to the suction end of the negative pressure pump, and the negative pressure pump is turned on to make the inside of the negative pressure cavity 2 in a negative pressure state.
In this embodiment, the second end of the second pipeline 4 is connected to the injection hole of the injector through a silicone tube, and those skilled in the art can also select other connecting pipelines and pressurizing devices, as long as the technical effect of pressurization can be achieved.
In this embodiment, the material of anchor clamps is stainless steel or organic glass, and its corrosion-resistant effectual, and sturdy structure, and the technical personnel in the art can also set up it into other materials to satisfy other demands.
In this embodiment, the length of the second pipeline 4 is 20-30mm, and the distance between the second pipeline 4 and the second bottom surface is greater than 10mm, and those skilled in the art can also make appropriate adjustments according to actual needs.
In this embodiment, the diameter of the outer wall of the first pipeline 3 is not greater than 5mm, the diameter of the inner wall of the second pipeline 4 is not greater than 5mm, the diameter of the annular outer wall is not less than 20mm, the wall thickness is 1mm, the height is not less than 50mm, and the person skilled in the art can make appropriate adjustments according to the size of the pressurizing device and the negative pressure device which are connected as required.
In this embodiment, the through holes 5 are not less than 2 rows, and the specific number of rows can be selected according to actual needs as long as the test piece can be adsorbed.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (9)
1. The utility model provides a test piece anchor clamps for whole inflation experiment which characterized in that: comprises an annular inner wall, an annular outer wall, a first pipeline, a second pipeline, a first bottom surface and a second bottom surface, wherein the annular outer wall is sleeved outside the annular inner wall, the first bottom surface is fixed at the first end of the annular inner wall and the annular outer wall, the first bottom surface is used for sealing the annular gap between the annular inner wall and the first end of the annular outer wall, the second bottom surface is fixed at the second end of the annular inner wall and the annular outer wall, the second bottom surface is used for sealing the annular gap between the annular inner wall and the second end of the annular outer wall and sealing the second end of the annular inner wall, the first end of the first pipeline is fixed on the annular outer wall, the first pipeline is communicated with the annular space between the annular inner wall and the annular outer wall, and the first end of the second pipeline is fixed on the annular inner wall, the first end of the second pipeline is communicated with the space on the inner side of the annular inner wall, the second pipeline penetrates through the annular outer wall and is connected with the annular outer wall in a sealing mode, a plurality of through holes are formed in the annular outer wall, and the through holes are located in the portion, between the first bottom face and the first pipeline, of the annular outer wall.
2. The specimen holder for the global expansion experiment of claim 1, wherein: the annular outer wall and the annular inner wall are coaxial cylindrical surfaces.
3. The specimen holder for the global expansion experiment of claim 1, wherein: the through holes are uniformly distributed in the circumferential direction of the annular outer wall.
4. The specimen holder for the global expansion experiment of claim 1, wherein: and the second end of the first pipeline is connected with the air suction end of the negative pressure pump.
5. The specimen holder for the global expansion experiment of claim 1, wherein: and the second end of the second pipeline is connected with an injection hole of the injector through a silicone tube.
6. The specimen holder for the global expansion experiment of claim 1, wherein: the material is stainless steel or organic glass.
7. The specimen holder for the global expansion experiment of claim 1, wherein: the length of the second pipeline is 20-30mm, and the distance between the second pipeline and the second bottom surface is greater than 10 mm.
8. The specimen holder for the global expansion experiment of claim 1, wherein: the diameter of the outer wall of the first pipeline is not more than 5mm, and the diameter of the inner wall of the second pipeline is not more than 5 mm.
9. The specimen holder for the global expansion experiment of claim 1, wherein: the through holes are not less than 2 rows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920771454.7U CN209945864U (en) | 2019-05-27 | 2019-05-27 | Test piece clamp for overall expansion experiment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920771454.7U CN209945864U (en) | 2019-05-27 | 2019-05-27 | Test piece clamp for overall expansion experiment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209945864U true CN209945864U (en) | 2020-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920771454.7U Expired - Fee Related CN209945864U (en) | 2019-05-27 | 2019-05-27 | Test piece clamp for overall expansion experiment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209945864U (en) |
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2019
- 2019-05-27 CN CN201920771454.7U patent/CN209945864U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200114 Termination date: 20200527 |