CN212180452U - Clamp for testing compression stability of honeycomb wallboard - Google Patents
Clamp for testing compression stability of honeycomb wallboard Download PDFInfo
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- CN212180452U CN212180452U CN201922406106.2U CN201922406106U CN212180452U CN 212180452 U CN212180452 U CN 212180452U CN 201922406106 U CN201922406106 U CN 201922406106U CN 212180452 U CN212180452 U CN 212180452U
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- cushion block
- clamp
- honeycomb
- end head
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Abstract
The utility model relates to a clamp for testing the compression stability of a honeycomb wallboard, which comprises two connecting blocks, an upper end, a lower end, four limiting strips and a cushion block; the two connecting blocks, one upper end, four limiting strips, one lower end and the cushion block jointly form a clamping and loading part of the test tool; the two connecting blocks are used for connecting with the loading end of the testing machine; the upper end and the lower end are connected with the two connecting blocks through hinged supports and connected with the honeycomb wall plate test piece; the cushion block is used for fixing the honeycomb panel test piece; the four limiting strips are used for limiting the external displacement of the surface of the honeycomb wall plate.
Description
Technical Field
The utility model relates to a honeycomb wallboard compression stability structure lectotype test technique can realize carrying out compression test to the honeycomb wallboard test piece of different structural style.
Background
Although the analysis theory of the structural stability of the composite material is greatly improved, the analysis capability of finite element software on the stability problem is stronger and stronger, and empirical formulas based on experimental research are more and more mature, but the finite element software is used in a certain range; moreover, the stability analysis is performed on a platform of finite element software, and the structure needs to be simplified, which brings certain errors to the analysis result, so that the important components and the novel structure still need to be tested, verified and researched.
The honeycomb wallboard has local failure and overall instability under compression and shear loads in actual use, so that a clamp capable of restraining the position of the honeycomb wallboard needs to be designed to ensure the reliability of an experimental result so as to guide engineering practice to achieve the purpose of testing the compression stability of the honeycomb wallboard.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem be: the defects of the prior art are overcome, and the compression stability test fixture for the honeycomb wallboard is provided, wherein the compression stability test fixture is used for carrying out compression loading tests on honeycomb wallboard test pieces of different sizes.
The utility model discloses a test of the compression stability of multiple honeycomb wallboard thickness provides the foundation for the structure lectotype and the configuration optimization of honeycomb wallboard.
The utility model provides a technical scheme be: a clamp for testing the compression stability of a honeycomb wallboard comprises two connecting blocks, an upper end, a lower end, four limiting strips and a cushion block;
the two connecting blocks, one upper end, four limiting strips, one lower end and the cushion block jointly form a clamping and loading part of the test tool; the two connecting blocks are used for connecting with the loading end of the testing machine; the upper end and the lower end are connected with the two connecting blocks through hinged supports and connected with the honeycomb wall plate test piece; the cushion block is used for fixing the honeycomb panel test piece; the four limiting strips are used for limiting the external displacement of the surface of the honeycomb wall plate.
Preferably, the compression loading test of the honeycomb wall plates with different sizes is realized by adjusting the positions of the four limiting strips and the upper and lower ends and replacing four groups of cushion blocks with different thicknesses.
Preferably, the cushion blocks comprise two large cushion blocks and two small cushion blocks; the honeycomb wall plate at the same side is clamped between a large cushion block and a small cushion block and is fixed with the upper end head/the lower end head through bolts.
Preferably, the lower end head is of a U-shaped groove structure, a knife edge for hinging and supporting is arranged on the bottom surface of the U-shaped groove structure, and a threaded hole fixedly connected with the cushion block and a unthreaded hole for mounting the limiting strip are arranged on the side surface of the U-shaped groove structure.
Preferably, the upper end head is in a structure with two side plates and a middle knife edge; the knife edge is used for realizing the hinge joint with the connecting block, and threaded holes are transversely formed in the two side plates and are used for realizing the connection with the cushion block; two ends of the two side plates are provided with longitudinal unthreaded holes for installing limiting strips.
Preferably, the lower end of the connecting block is provided with a knife edge matched with the shape of the knife edge of the upper end head/the lower end head, and the connecting block is provided with a threaded hole for connection.
Preferably, the two ends of the limiting strip are bent towards the same side to form a long strip structure, and the bent parts at the two ends are provided with unthreaded holes for being fixedly connected with the upper end head/the lower end head; set up the screw hole on the rectangular, the bolt passes through the screw hole is screwed to honeycomb wall face.
Preferably, the cushion blocks adopt different thickness combinations to adjust the position of the pressure center, and the large cushion block and the small cushion block adopt the same cuboid strip-shaped structure and different structure thicknesses.
The utility model is suitable for a compression loading test of different structural style's honeycomb wallboard testpieces.
Compared with the prior art, the utility model beneficial effect be:
according to the different sizes of the honeycomb wallboard test piece, the large cushion block and the small cushion block with different sizes are selected, so that the compression loading test on the honeycomb wallboard test piece with different sizes can be realized. The clamp can be used for solving the compression experiment of the composite sandwich structure plate of the wall plates with different thicknesses on two sides, the position of acting force in the thickness direction of the thin plate can be manually adjusted, and the limitation that the traditional clamp cannot be eccentrically loaded is overcome.
Drawings
Fig. 1 is a schematic view of a jig for testing unstable load of a honeycomb panel according to the present invention;
FIG. 2 is a schematic view of a connection block;
FIG. 3 is a schematic view of the upper tip;
FIG. 4 is a schematic view of the lower tip;
FIG. 5 is a schematic view of a stop bar;
FIG. 6 is a schematic view of a spacer;
FIG. 7 is a schematic view of a beam honeycomb panel test piece.
Detailed Description
The present invention will be further explained with reference to the following examples.
The compression loading test of honeycomb panel test pieces using a jig for testing the buckling load of honeycomb panels must be properly installed in the exact positions of the components shown in fig. 1, fastened with correspondingly sized bolts in the appropriate positions shown in fig. 1.
When a compression loading test is performed on a honeycomb panel test piece by using a fixture for testing the instability load of the honeycomb panel, the fixture and a test sample need to be assembled according to a certain sequence. The method comprises the following specific steps:
the method comprises the following steps: according to the position relation shown in fig. 1, a honeycomb wall plate (fig. 7), a large cushion block 1, a small cushion block 2, an upper end head 4 and a lower end head 7 are assembled in sequence. Firstly, clamping the honeycomb wall plate 5 between a large cushion block and a small cushion block, loading an upper end head, and sequentially penetrating 10 bolts with proper sizes through threaded holes shown by the reference numeral 33 in the figure 3 and fixing; then clamping the honeycomb wall plate between a large cushion block and a small cushion block, loading the lower end head, and sequentially penetrating 10 bolts with proper sizes through threaded holes shown by the reference number 42 in the figure 4 and fixing; fig. 6 shows a structural form of a cushion block, the cushion block adopts different thickness combinations to adjust the position of a pressure center, and the large cushion block and the small cushion block adopt the same cuboid strip-shaped structure and different structural thicknesses.
Step two: according to the position relation shown in figure 1, 4 limiting strips 6, an upper end head and a lower end head are sequentially assembled, and the honeycomb wall plate is fixed. Firstly, a bolt with proper size sequentially passes through the unthreaded hole with the reference number 32 in the figure 3, the unthreaded hole with the reference number 51 in the figure 5 and a nut with proper size and is fixed; then, a bolt with proper size sequentially passes through the unthreaded hole with the reference number 41 in the figure 4, the unthreaded hole with the reference number 52 in the figure 5 and a nut with proper size, and is fixed, and other 3 limiting strips are assembled in the same way; after completion, 3 bolts with appropriate size are screwed to the surface of the honeycomb wall plate through the threaded holes marked with the reference number 53 in fig. 5, and the honeycomb wall plate is assembled and fixed through other three limiting strips in the same way;
step three: according to the position relation shown in figure 1, the connecting block 3 and the loading end of the testing machine, the connecting block and the supporting surface of the testing machine are assembled, and the clamp is assembled. Firstly, a bolt with proper size sequentially penetrates through a loading end of the testing machine and a 21 threaded hole shown in figure 2 and is fixed, a bolt with proper size sequentially penetrates through a supporting surface of the testing machine and a 21 threaded hole shown in figure 2 and is fixed, then, a knife edge with the number 22 in figure 2 is hinged with a knife edge with the number 31 in figure 3, and a knife edge with the number 22 in figure 2 is hinged with a knife edge with the number 43 in figure 4.
And assembling according to the steps, and applying a proper load at the connecting block through a testing machine to finish the compression loading test of the honeycomb wallboard test piece. And selecting a large cushion block and a small cushion block with proper sizes according to the sizes of the tested honeycomb panel test pieces, and completing compression loading experiments on the honeycomb panel test pieces with different sizes according to the steps.
To sum up, the utility model discloses a can realize not unidimensional honeycomb wallboard test piece compression loading experiment to selecting not unidimensional big cushion, little cushion to combine corresponding mechanical testing method and theory to accomplish the research to the mechanical properties of honeycomb wallboard.
The non-detailed description of the present invention is within the common general knowledge of those skilled in the art.
Claims (9)
1. The utility model provides a test honeycomb wallboard compression stability's anchor clamps which characterized in that: the device comprises two connecting blocks, an upper end, a lower end, four limiting strips and a cushion block;
the two connecting blocks, one upper end, four limiting strips, one lower end and the cushion block jointly form a clamping and loading part of the test tool; the two connecting blocks are used for connecting with the loading end of the testing machine; the upper end and the lower end are connected with the two connecting blocks through hinged supports and connected with the honeycomb wall plate test piece; the cushion block is used for fixing the honeycomb panel test piece; the four limiting strips are used for limiting the external displacement of the surface of the honeycomb wall plate.
2. The clamp of claim 1, wherein: the compression loading test of the honeycomb wall plates with different sizes is realized by adjusting the positions of the four limiting strips and the upper and lower ends and replacing four groups of cushion blocks with different thicknesses.
3. The clamp of claim 1, wherein: the cushion blocks comprise two large cushion blocks and two small cushion blocks; the honeycomb wall plate at the same side is clamped between a large cushion block and a small cushion block and is fixed with the upper end head/the lower end head through bolts.
4. The clamp of claim 1, wherein: the lower end head is of a U-shaped groove structure, a knife edge for hinging and supporting is arranged on the bottom surface of the U-shaped groove, and a threaded hole fixedly connected with the cushion block and a unthreaded hole for installing the limiting strip are arranged on the side surface of the U-shaped groove.
5. The clamp of claim 1 or 4, wherein: the upper end head is a structure with two side plates and a middle knife edge; the knife edge is used for realizing the hinge joint with the connecting block, and threaded holes are transversely formed in the two side plates and are used for realizing the connection with the cushion block; two ends of the two side plates are provided with longitudinal unthreaded holes for installing limiting strips.
6. The clamp of claim 5, wherein: the lower end of the connecting block is provided with a knife edge matched with the shape of the knife edge of the upper end head/the lower end head, and the connecting block is provided with a threaded hole for connection.
7. The clamp of claim 1, wherein: the two ends of the limiting strip are of long strip structures bent towards the same side, and the bent parts at the two ends are provided with unthreaded holes for being fixedly connected with the upper end head/the lower end head; set up the screw hole on the rectangular, the bolt passes through the screw hole is screwed to honeycomb wall face.
8. The clamp of claim 1, wherein: the cushion blocks adopt different thickness combinations to adjust the position of the pressure center, and the large cushion block and the small cushion block adopt the same cuboid strip-shaped structure and different structure thicknesses.
9. The clamp of claim 1, wherein: the compression loading test device is suitable for compression loading tests of honeycomb wallboard test pieces in different structural forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922406106.2U CN212180452U (en) | 2019-12-27 | 2019-12-27 | Clamp for testing compression stability of honeycomb wallboard |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922406106.2U CN212180452U (en) | 2019-12-27 | 2019-12-27 | Clamp for testing compression stability of honeycomb wallboard |
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| Publication Number | Publication Date |
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| CN212180452U true CN212180452U (en) | 2020-12-18 |
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| CN201922406106.2U Active CN212180452U (en) | 2019-12-27 | 2019-12-27 | Clamp for testing compression stability of honeycomb wallboard |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113109141A (en) * | 2021-05-24 | 2021-07-13 | 哈尔滨工业大学 | High-temperature compression test fixture for special-shaped thin-wall plate-shaped structure |
| CN113125247A (en) * | 2021-03-30 | 2021-07-16 | 中国人民解放军海军工程大学 | Test method for measuring ultimate strength and fatigue of stiffened plate |
| CN114441278A (en) * | 2021-12-20 | 2022-05-06 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | Encapsulating method and device for composite material reinforced wall plate test piece for airplane |
-
2019
- 2019-12-27 CN CN201922406106.2U patent/CN212180452U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113125247A (en) * | 2021-03-30 | 2021-07-16 | 中国人民解放军海军工程大学 | Test method for measuring ultimate strength and fatigue of stiffened plate |
| CN113109141A (en) * | 2021-05-24 | 2021-07-13 | 哈尔滨工业大学 | High-temperature compression test fixture for special-shaped thin-wall plate-shaped structure |
| CN114441278A (en) * | 2021-12-20 | 2022-05-06 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | Encapsulating method and device for composite material reinforced wall plate test piece for airplane |
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