CN210465147U - Axial vertical loading stability test device - Google Patents
Axial vertical loading stability test device Download PDFInfo
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- CN210465147U CN210465147U CN201921082595.4U CN201921082595U CN210465147U CN 210465147 U CN210465147 U CN 210465147U CN 201921082595 U CN201921082595 U CN 201921082595U CN 210465147 U CN210465147 U CN 210465147U
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Abstract
The utility model relates to an axial vertical loading stability test device, which comprises a frame and a loading device, wherein the frame comprises an upper fixed frame and a lower fixed seat which are arranged in an up-and-down symmetry manner, the upper fixed frame is connected with the lower fixed seat through four guide posts arranged at four corners, and the upper fixed frame is of a rectangular frame structure; loading attachment includes actuating mechanism, screw rod, sliding platform and pressure head, and the screw rod top links to each other with actuating mechanism, and the bottom links to each other with the center of being connected the lug, and the sliding platform four corners links to each other with four guide posts cup joints respectively, slides from top to bottom along the guide post, and sliding platform top center is equipped with articulated seat, connects the lug and articulated seat through the pivot is articulated continuous, and the pressure head links to each other with sliding platform's bottom center, the utility model discloses can satisfy different length, different cross sectional shape and can apply load according to the loading curve.
Description
Technical Field
The utility model belongs to the technical field of sandwich panel lattice structure model face in compression test, in particular to axial vertical loading stability test device.
Background
The sandwich structure has the advantages of high specific rigidity and high specific strength, and is widely applied to the fields of aerospace, constructional engineering, vehicle engineering, ship structures and the like. Sandwich constructions in practice inevitably encounter axial compressive loads and lead to elastic buckling or buckling which quickly leads to failure of the panel. The axial compressive load to which the sandwich panel is subjected is an important concern for designers. The sandwich structure has various forms and strong designability, the axial size of a test sample piece is generally large, the cross section shapes are different (such as rectangle, square, trapezoid, rhombus and the like), and a universal type axial pressure stability test bed which can meet different lengths, different cross section shapes and load application according to a loading curve needs to be designed. Several studies have been carried out at home and abroad on the mechanical properties of sandwich panels under axial compression loads. The existing axial stability test of the sandwich structure has the following limitations: 1. the common test device only tests the sandwich structure with specific size and type and has no universality; 2. the loading device does not move stably, and the test result is not accurate; 3. is not easy to be assembled and disassembled, and is not beneficial to the large-batch test.
Disclosure of Invention
An object of the utility model is to above-mentioned technical demand and provide an axial vertical loading stability test device, but the sandwich structure of dismantling different length and cross-sections fast when testing does benefit to and applies load, conveniently reads data, improves the reliability of data.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the axial vertical loading stability test device is characterized by comprising a rack and a loading device, wherein the rack comprises an upper fixed frame and a lower fixed seat which are arranged in an up-and-down symmetrical manner, the upper fixed frame and the lower fixed seat are connected through four guide posts arranged at four corners, and the upper fixed frame is of a rectangular frame structure; the loading device comprises a driving mechanism, a screw rod, a sliding platform and a pressure head, wherein the top of the screw rod is connected with the driving mechanism, the bottom of the screw rod is connected with the center of a connecting lug, four corners of the sliding platform are respectively connected with four guide columns in a sleeved mode and slide up and down along the guide columns, a hinged seat is arranged at the center of the top of the sliding platform, the connecting lug is hinged with the hinged seat through a rotating shaft, and the pressure head is connected with the center of the bottom of the sliding platform.
According to the scheme, the driving mechanism is an oil cylinder.
According to the scheme, the guide column is formed by connecting an upper guide column and a lower guide column through threads.
The utility model has the advantages that: the axial vertical loading stability test device is provided for carrying out an axial compression stability test on the sandwich structure, and particularly, in the process of a ballast failure test on the sandwich structure with different heights, the axial ballast test on the sandwich structure with different heights can be met by connecting the sliding platform and the guide column through the oil cylinder pull rod; the pressing plate at the lower end of the sliding platform can be conveniently fixed with the interlayer structure; the hydraulic cylinder is used as a loading device, the motion is stable, the loading force is large, the response is fast, the hydraulic cylinder is provided with a force sensor and a displacement sensor, and the system analysis can be carried out by combining the data of the stress strain gauge.
Drawings
Fig. 1 is a front view of an embodiment of the present invention.
Fig. 2 is a partial view of fig. 1.
Fig. 3 is a side view of an embodiment of the present invention.
Detailed Description
The embodiments of the present invention will now be described with reference to the accompanying drawings, but the present invention is not limited to the following embodiments.
As shown in fig. 1 to 3, an axial vertical loading stability test device comprises a rack and a loading device, wherein the rack comprises an upper fixed frame 1 and a lower fixed seat 2 which are arranged up and down symmetrically, the upper fixed frame and the lower fixed seat are connected through four guide posts 3 arranged at four corners, and the upper fixed frame is of a rectangular frame structure; the loading device comprises a driving mechanism, a screw rod 4, a sliding platform 5 and a pressure head 6, the top of the screw rod is connected with the driving mechanism, the bottom of the screw rod is connected with the center of a connecting lug 7, four corners of the sliding platform are respectively connected with four guide posts in a sleeved mode and slide up and down along the guide posts, a hinged seat 8 is arranged at the center of the top of the sliding platform, the connecting lug is hinged with the hinged seat through a rotating shaft, and the pressure head is connected with the center of the bottom of the sliding platform.
The driving mechanism is an oil cylinder 9, the oil cylinder penetrates through the upper fixing frame to be connected with the sliding platform to move up and down, and the oil cylinder can stretch out and draw back to drive the whole loading device to apply pressure or pull load (the axial pressure test adopts pressure load).
The guide post comprises last guide post and guide post threaded connection down, through the guide post of processing different length, can adjust the distance between upper fixed frame and the lower fixing base to satisfy not co-altitude sandwich structure's axial ballast test.
The upper end of the screw is connected with an oil cylinder to realize rigid connection with the oil cylinder, and the lower end of the screw is connected with a connecting lug and is hinged with a matched hinge seat to be connected with the sliding platform to realize rigid connection of the sliding platform and the screw; the bottom surface of the sliding platform is fixed with a sandwich structure test piece on a pressure head below the sliding platform through a clamp, so that from top to bottom, a loading device is formed by sequentially combining an oil cylinder, a screw rod, a connecting lug, the sliding platform and the pressure head, and the control end sends an instruction to control the expansion and contraction of the oil cylinder, so that the whole loading device can realize preset loading under the help of four guide columns.
The above description is only for the preferred embodiment of the intellectual development, but the intellectual development should not be limited to the disclosure of the embodiment and the drawings. All equivalents and modifications which come within the spirit of the disclosure are desired to be protected.
Claims (3)
1. The axial vertical loading stability test device is characterized by comprising a rack and a loading device, wherein the rack comprises an upper fixed frame and a lower fixed seat which are arranged in an up-and-down symmetrical manner, the upper fixed frame and the lower fixed seat are connected through four guide posts arranged at four corners, and the upper fixed frame is of a rectangular frame structure; the loading device comprises a driving mechanism, a screw rod, a sliding platform and a pressure head, wherein the top of the screw rod is connected with the driving mechanism, the bottom of the screw rod is connected with the center of a connecting lug, four corners of the sliding platform are respectively connected with four guide columns in a sleeved mode and slide up and down along the guide columns, a hinged seat is arranged at the center of the top of the sliding platform, the connecting lug is hinged with the hinged seat through a rotating shaft, and the pressure head is connected with the center of the bottom of the sliding platform.
2. The axial vertical loading stability test device of claim 1, wherein the driving mechanism is a cylinder.
3. The axial vertical loading stability test device of claim 1 or 2, wherein the guide column is composed of an upper guide column and a lower guide column which are connected through threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921082595.4U CN210465147U (en) | 2019-07-11 | 2019-07-11 | Axial vertical loading stability test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921082595.4U CN210465147U (en) | 2019-07-11 | 2019-07-11 | Axial vertical loading stability test device |
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| Publication Number | Publication Date |
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| CN210465147U true CN210465147U (en) | 2020-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921082595.4U Active CN210465147U (en) | 2019-07-11 | 2019-07-11 | Axial vertical loading stability test device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111766142A (en) * | 2020-06-17 | 2020-10-13 | 中国飞机强度研究所 | Wallboard compression test device |
-
2019
- 2019-07-11 CN CN201921082595.4U patent/CN210465147U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111766142A (en) * | 2020-06-17 | 2020-10-13 | 中国飞机强度研究所 | Wallboard compression test device |
| CN111766142B (en) * | 2020-06-17 | 2023-08-04 | 中国飞机强度研究所 | Wallboard compression test device |
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