CN216208142U - Biaxial stretching loading device - Google Patents
Biaxial stretching loading device Download PDFInfo
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- CN216208142U CN216208142U CN202122477039.0U CN202122477039U CN216208142U CN 216208142 U CN216208142 U CN 216208142U CN 202122477039 U CN202122477039 U CN 202122477039U CN 216208142 U CN216208142 U CN 216208142U
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Abstract
The utility model relates to the field of test piece tensile experiments, in particular to a biaxial tensile loading device; the connecting device comprises a chuck, a connecting plate, a connecting block and at least one threaded rod, wherein at least one first through hole is correspondingly arranged on two opposite sides of the connecting plate, second through holes matched with the first through holes are arranged at two ends of the connecting block, the connecting block is arranged in the connecting plate, and the threaded rod penetrates through the second through holes and the first through holes to connect the connecting plate and the connecting block together; the utility model is suitable for various materials with lower strength and easy to damage, such as rubber, asphalt, propellant and the like; the device is convenient to match with biaxial tensile test systems of different types and sizes, adopts a detachable design, and has the advantages of simple working principle, convenient operation, strong universality and low manufacturing cost.
Description
Technical Field
The utility model relates to the field of test piece tensile experiments, in particular to a biaxial tensile loading device.
Background
At present, for the mechanical property research of materials, a traditional universal material testing machine is mainly adopted to carry out uniaxial tension and compression tests on a test piece so as to obtain the mechanical property parameters of the materials. However, more and more researches show that the mechanical behavior research of the material in a uniaxial state can not completely meet the practical requirement, and the mechanical behavior research of two axes or even three axes needs to be carried out. Therefore, in order to grasp the mechanical property of the material more accurately, the test method under the condition of biaxial loading is particularly important;
at present, two methods for carrying out the biaxial test are mainly divided into two methods, one method is to realize biaxial loading based on a uniaxial loading tester system, and the other method is to realize biaxial loading based on a biaxial loading tester system. In the former, because the test type is not matched with a test device, a special clamp needs to be designed to be matched with the test device to perform the test, the clamp is often complex in configuration and difficult to be perfectly matched with a testing machine, and the error of a test result is large; the latter test type has good matching with a test system, and can achieve good test effect only by using a simple clamp, but for some non-metallic materials with low strength and easy to damage, when a common clamp is used for clamping, the phenomenon of stress concentration is easy to occur at the contact part of the clamp and a test piece, so that the condition that the test area is not damaged and the contact part of the clamp and the test piece is damaged first is caused, and the accuracy of the test result is seriously influenced. Therefore, a novel fixture matched with a biaxial loading tester needs to be designed so as to research the biaxial mechanical properties of the low-strength material.
SUMMERY OF THE UTILITY MODEL
The utility model provides a biaxial stretching loading device aiming at the problems mentioned in the prior art, and aims to solve the problems mentioned in the background technology.
The utility model relates to a biaxial stretching loading device which comprises a chuck, a connecting plate, a connecting block and at least one threaded rod, wherein at least one first through hole is correspondingly arranged on two opposite sides of the connecting plate; the top of the connecting plate is also provided with a square hole, one end of the chuck is provided with a lower bottom plate, the other end of the chuck penetrates through the square hole and extends out of the connecting plate, and the lower bottom plate is in contact with the connecting plate.
Preferably, the connecting plate is U-shaped, and the opening of the connecting plate is adapted to the connecting block.
Preferably, the size of the lower bottom plate is larger than that of the square hole.
Preferably, the threaded rod is provided with an external thread, and the external thread is connected with an internal thread arranged in the first through hole.
Preferably, the connecting block is connected with the test piece in an adhesive mode.
Compared with the prior art, the utility model has the following technical effects:
the utility model is suitable for various materials with lower strength and easy to damage, such as rubber, asphalt, propellant and the like; the device is convenient to match with biaxial tensile test systems of different types and sizes, adopts a detachable design, and has the advantages of simple working principle, convenient operation, strong universality and low manufacturing cost; compared with the traditional clamping type clamp, the utility model can better ensure the integrity of the test piece and the accuracy of the measurement result, has larger area of the bonding part with the test piece and avoids the stress concentration phenomenon in the test.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the chuck of the present invention;
FIG. 3 is a schematic view of a connection plate according to the present invention;
FIG. 4 is a schematic view of a connecting block according to the present invention;
FIG. 5 is a schematic view of a threaded rod of the present invention;
FIG. 6 is a schematic view of the present invention in use.
Reference numerals: 1. a chuck; 2. a threaded rod; 3. a connecting plate; 4. connecting blocks; 5. a lower base plate; 6. a square hole; 7. a first through hole; 8. a second via.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
The utility model discloses a biaxial stretching loading device, which comprises a chuck 1, a connecting plate 3, a connecting block 4 and at least one threaded rod 2, wherein two opposite sides of the connecting plate 3 are correspondingly provided with at least one first through hole 7, two ends of the connecting block 4 are provided with second through holes 8 matched with the first through holes 7, the connecting block 4 is arranged in the connecting plate 3, and the threaded rod 2 penetrates through the second through holes 8 and the first through holes 7 to connect the connecting plate 3 and the connecting block 4 together; the top of the connecting plate 3 is also provided with a square hole 6, one end of the chuck 1 is provided with a lower bottom plate 5, the other end of the chuck penetrates through the square hole 6 and extends out of the connecting plate 3, and the lower bottom plate 5 is in contact with the connecting plate 3. The connecting plate 3 is U-shaped, and the opening of the connecting plate 3 is matched with the connecting block 4. The size of the lower bottom plate 5 is larger than that of the square hole 6. The threaded rod 2 is provided with external threads, and the external threads of the threaded rod are connected with internal threads arranged in the first through hole 7. And the connecting block 4 is adhered to the test piece.
In the embodiment, as shown in fig. 1, the device is suitable for cross-shaped tensile test pieces, in the embodiment, a chuck 1 is connected with a double-shaft tester, the double-shaft tester drives the device and the test pieces to perform tensile tests through the chuck 1, when in use, the device is convenient to disassemble, can be adapted to tensile equipment of different models and sizes by replacing chucks 1 with different lengths and sizes, and is simple and convenient to use; in the embodiment, the connecting plate 3 is of a U-shaped structure, an opening of the connecting plate is downward, as shown in fig. 3, a connecting block 4 is arranged in the connecting plate 3, and the connecting block 4 is connected with the connecting plate 3 through a threaded rod 2, in the embodiment, three threaded rods 2 are provided, but not limited to three threaded rods, and can be changed according to actual requirements, and an internal thread is arranged in the first through hole 7 in fig. 3, and as shown in fig. 5, the first through hole is adaptively connected with an external thread on the threaded rod 2, so that the connecting plate is convenient to detach or replace; in the embodiment, the top of the connecting plate 3 is provided with a square hole 6, the square hole 6 is used for the chuck 1 to pass through, one end of the chuck 1, which is provided with the lower bottom plate 5, is contacted with the connecting plate 3, and when the chuck is stretched, the lower bottom plate 5 is contacted with the connecting plate 3 to generate an extrusion fastening effect so that the chuck 1 is stable; fig. 6 is a use state diagram in the present embodiment, in which the device is installed in all four directions of the test piece, and the test piece can be subjected to a tensile test by connecting the chuck 1 to the testing machine.
When the device is used, a test piece is firstly bonded with the connecting block 4, in order to achieve better test effect, the bonding surface of the connecting block 4 and the test piece can be subjected to rough treatment so as to increase the bonding strength, and then one end of the chuck 1, which is far away from the lower base plate 5, penetrates through the square hole 6 on the connecting block 4, so that the lower base plate 5 of the chuck 1 is contacted with the connecting plate 3, and the chuck 1 is restrained to be stable; finally, adjusting the position, enabling the threaded rod 2 to penetrate through a first through hole 7 in the connecting plate 3 and then penetrate through a second through hole 8 in the connecting block 4, connecting the connecting plate 3 with the connecting block 4, screwing the threaded rod by rotating, completing assembly, and matching and tightening the chuck 1 and the testing machine to carry out a test; when needing to develop repeated many times experiment, only need loosen the back with threaded rod 2, take out the testpieces and the connecting block 4 after the experiment, change new test piece and link to each other with connecting block 4 bonding, can develop the experiment next time.
Claims (5)
1. The biaxial stretching loading device is characterized by comprising a chuck (1), a connecting plate (3), a connecting block (4) and at least one threaded rod (2), wherein at least one first through hole (7) is correspondingly formed in two opposite sides of the connecting plate (3), second through holes (8) matched with the first through holes (7) are formed in two ends of the connecting block (4), the connecting block (4) is arranged in the connecting plate (3), and the threaded rod (2) penetrates through the second through holes (8) and the first through holes (7) to connect the connecting plate (3) and the connecting block (4) together;
the top of the connecting plate (3) is also provided with a square hole (6), one end of the chuck (1) is provided with a lower bottom plate (5), the other end of the chuck penetrates through the square hole (6) and extends out of the connecting plate (3), and the lower bottom plate (5) is in contact with the connecting plate (3).
2. A biaxial tensile loading device according to claim 1, wherein said connecting plates (3) are U-shaped, the openings of the connecting plates (3) being adapted to the connecting blocks (4).
3. A biaxial tension loading device as defined in claim 1, wherein the size of the lower plate (5) is larger than the square hole (6).
4. A biaxial tensile loading device as defined in claim 1, wherein said threaded rod (2) is provided with external threads, which are connected to internal threads provided in the first through hole (7).
5. A biaxial tensile loading device according to claim 1, wherein said joint block (4) is adhesively attached to the test piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122477039.0U CN216208142U (en) | 2021-10-14 | 2021-10-14 | Biaxial stretching loading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122477039.0U CN216208142U (en) | 2021-10-14 | 2021-10-14 | Biaxial stretching loading device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216208142U true CN216208142U (en) | 2022-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122477039.0U Active CN216208142U (en) | 2021-10-14 | 2021-10-14 | Biaxial stretching loading device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216208142U (en) |
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2021
- 2021-10-14 CN CN202122477039.0U patent/CN216208142U/en active Active
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