CN210465164U - Shearing test device and system based on universal testing machine - Google Patents
Shearing test device and system based on universal testing machine Download PDFInfo
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- CN210465164U CN210465164U CN201920814733.7U CN201920814733U CN210465164U CN 210465164 U CN210465164 U CN 210465164U CN 201920814733 U CN201920814733 U CN 201920814733U CN 210465164 U CN210465164 U CN 210465164U
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Abstract
The utility model relates to a shear test device and system based on universal tester, the device include universal tester, universal tester includes testing machine body and the relative lower pressure head and the last support head that set up about in the testing machine body, still including setting up the shear test platform in universal tester, the shear test platform includes: a main platform arranged on the upper support head; the number of the T-shaped supporting tables is 2, the T-shaped supporting tables are vertically and symmetrically arranged on two sides of the upper surface of the main platform and used for placing the shearing test blocks; the upper top cover is arranged on the lower pressure head through a first electromagnet; and the test joint is arranged at the bottom of the upper top cover. Compared with the prior art, the utility model discloses can change current universal tester's test mode effectively, conveniently realize the shear test of test block, low to the requirement of testing machine, the device equipment is nimble, the installation is convenient.
Description
Technical Field
The utility model belongs to the technical field of the test equipment technique and specifically relates to a shear test device and system based on universal tester is related to.
Background
The universal tester is widely applied to a plurality of testing instruments, is mainly used for mechanical property tests of metal and nonmetal materials, and can be used for various tests such as tensile tests, compression tests, bending tests, torsion tests and the like.
At present, researchers neglect the requirements of shear tests only for tensile and compression testing machines, so that shear tests of many materials cannot be smoothly carried out, new testing machines need to be purchased, and waste is easily caused. In addition, many experimental machines can only output a curve chart of fixed experimental data and cannot output a required experimental result during the experiment, which brings much inconvenience and trouble to the experimental research.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a shear test device and system based on universal tester for overcome the defect that above-mentioned prior art exists.
The purpose of the utility model can be realized through the following technical scheme:
the utility model provides a shear test device based on universal tester, includes universal tester, universal tester includes the testing machine body and the relative lower pressure head and the last support head that set up about in the testing machine body, still includes the shear test platform that sets up in universal tester, the shear test platform includes:
a main platform arranged on the upper support head;
the number of the T-shaped supporting tables is 2, the T-shaped supporting tables are vertically and symmetrically arranged on two sides of the upper surface of the main platform and used for placing the shearing test blocks;
the upper top cover is arranged on the lower pressure head through a first electromagnet;
and the test joint is arranged at the bottom of the upper top cover.
Preferably, clamping grooves are symmetrically formed in two sides of the upper surface of the main platform, and the bottom of the T-shaped supporting platform is clamped in the clamping grooves.
Preferably, the T-shaped support platform is provided with limiting rods on two sides along the direction of the clamping groove respectively.
Preferably, the cross-sectional shape of draw-in groove is the type of falling T, the bottom of gag lever post is equipped with the picture peg, the picture peg inserts in the bottom transverse groove of draw-in groove.
Preferably, the T-shaped support platform comprises a transverse plate and a vertical plate arranged in the middle of the bottom of the transverse plate, and the depth of the clamping groove is equal to the height of the vertical plate.
Preferably, the bottom of the main platform is mounted on the upper support head through a second electromagnet.
Preferably, the upper side of the main platform is provided with a bubble balancing instrument.
Preferably, the upper surface of the T-shaped support platform is an anti-skid plane.
Preferably, the first electromagnet is an annular electromagnet with the inner diameter consistent with the outer diameter of the lower pressure head.
The test system adopting the universal testing machine-based shear test device further comprises a data acquisition module and a data analysis device, wherein the data acquisition module comprises a plurality of shear force data acquisition sensors arranged on the shear test block, the data analysis device is connected with the data acquisition module, and a chip comprising a plurality of data analysis methods is arranged in the data analysis device.
Compared with the prior art, the utility model has the advantages of it is following:
1. through last support head setting have a T type brace table main platform to and set up experimental joint through last top cap on the pressure head down, can utilize current universal tester effectively, change its test mode, conveniently realize the shear test of test block, it is low to the requirement of testing machine, the device equipment is nimble, the installation is convenient.
2. Data in the test process of the shear force test device are collected, and then a required analysis method is selected for analysis, so that the test result can be rapidly output, and convenience is brought to experimental research.
3. The upper cover is fixed on the upper pressure head through the electromagnet, so that the installation is convenient, and the structure of the upper pressure head can be ensured not to be damaged.
Drawings
FIG. 1 is a schematic structural view of a middle shear test bed according to the present invention;
FIG. 2 is a schematic structural diagram of the middle shear test bed of the present invention when testing a shear test block;
FIG. 3 is a schematic bottom structure view of the middle shear test bed of the present invention;
fig. 4 is a schematic view of the overall structure of the present invention;
fig. 5 is a flow chart of data analysis according to the present invention.
The figure is marked with: the method comprises the following steps of 1-a main platform, 2-an upper top cover, 3-a limiting rod, 4-an inserting plate, 5-a test joint, 6-a first electromagnet, 7-a T-shaped supporting table, 8-an anti-skidding plane, 9-an electromagnet switch, 10-a foaming balancing instrument, 11-a shearing test block, 12-a second electromagnet, 13-a clamping groove, 14-a testing machine body, 15-a lower pressure head and 16-an upper supporting head.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
Examples
The application provides a shear test device based on universal tester, including universal tester, specifically be computer control electronic type universal tester, universal tester includes testing machine body 14 and the relative lower pressure head 15 and the upper support head 16 that set up about testing machine body 14. This device is still including setting up the shear test platform in universal tester, as shown in fig. 1 ~ 3, the shear test platform includes:
a main platform 1 disposed on the upper support head 16; the number of the T-shaped support tables 7 is 2, the T-shaped support tables are vertically and symmetrically arranged on two sides of the upper surface of the main platform 1 and used for placing the shearing test blocks 11, and the shearing test blocks 11 can be prevented from being in contact with the main platform 1; the upper top cover 2 is arranged on the lower pressure head 15 through a first electromagnet 6; and the test joint 5 is arranged at the bottom of the upper top cover 2.
Clamping grooves 13 are symmetrically formed in two sides of the upper surface of the main platform 1, and the bottom of the T-shaped supporting platform 7 is clamped in the clamping grooves 13. The T-shaped support platform 7 is provided with limiting rods 3 on two sides along the direction of the clamping groove 13. The T-shaped support platform 7 comprises a transverse plate and a vertical plate arranged in the middle of the bottom of the transverse plate, and the depth of the clamping groove 13 is the same as the height of the vertical plate. The cross-sectional shape of draw-in groove 13 is the type of falling T, and the bottom of gag lever post 3 is equipped with picture peg 4, and picture peg 4 inserts in the horizontal groove in bottom of draw-in groove 13. The upper surface of the T-shaped support table 7 is an anti-slip plane 8 which prevents the shearing test block 11 from sliding relatively.
The test joint 5 can be replaced by joints of different shapes according to the needs of experiments, stress concentration or stress dispersion can be achieved, and in the embodiment, the test joint 5 is connected with the upper top cover 2 through threads.
In this embodiment, as shown in fig. 3, the bottom of the main platform 1 is provided with a groove, and the groove is mounted on the upper supporting head 16 through the second electromagnet 12. The second electromagnet 12 is an annular electromagnet with the inner diameter consistent with the outer diameter of the upper supporting head 16, and the first electromagnet 6 is an annular electromagnet with the inner diameter consistent with the outer diameter of the lower pressing head 15. The control parts of the two electromagnets may be arranged in the main platform 1 and the electromagnet switch 9 is arranged on the main platform 1.
The upper side of the main platform 1 is provided with a bubble balancing instrument 10 which can judge whether the main platform 1 is balanced.
When the shear test bed is installed, the main platform 1 is installed on an upper supporting head 16 of the universal testing machine, and whether bubbles of the bubble balancing instrument 10 of the main platform 1 are leveled in the middle or not is observed; a T-shaped support platform 7 is arranged on a clamping groove 13 of the main platform 1, and a limiting rod 3 is inserted into the clamping groove 13 through an inserting plate 4, so that the T-shaped support platform 7 is locked; placing a shearing test block 11 on the T-shaped support table 7; an upper top cover 2 is arranged on the lower pressure head 15, and a test joint 5 is arranged according to the experiment requirement; the lower ram 15 is controlled to bring the test sub 5 down into contact with the shear block 11. After the completion of the installation, a shear test was performed by controlling the lower indenter 15.
The application also provides a test system adopting the shear test device, and the test system further comprises a data acquisition module and a data analysis device. The data acquisition module comprises a plurality of shearing force data acquisition sensors arranged on the shearing test block 11, such as a resistance-type strain gauge and a data acquisition circuit thereof, and can measure stress, strain value, deformation value and the like of the shearing test block 11 in the experimental process. The data analysis device is connected with the data acquisition module, and a chip comprising a plurality of data analysis methods is arranged in the data analysis device.
As shown in fig. 5, the data analysis process of the system is as follows:
s1, starting an experiment, installing a sensor of the data acquisition module on a specified position of the shear test block 11, and acquiring a stress value, a strain value, a deformation value and the like of the shear test block 11 in the experiment process;
s2, the data analysis device identifies the data of the data acquisition module, and selects corresponding experimental data according to the experimental requirements;
s3, establishing a database, and establishing the database according to the collected data and the test data selected in the step S2;
s4, selecting a corresponding analysis method according to the experiment requirement:
(1) inputting a discrimination algorithm: judging data in the database to obtain data of key points required by an experiment; the specific process takes the stress value as an example, and is implemented by Matlab software in this embodiment, by inputting
The result, σ, is obtained1Is T1Shear stress, σ, measured by strain gauges at times2Is T2Shear stress measured by time strain gaugeOutput stress value σ1The stress value is the stress value when the test block is damaged;
(2) fitting the experimental data by using a least square method to obtain an experimental data fitting formula; for example, a relationship between variable σ stress and deformation x is established, and fitting is performed by adopting a linear function, a hyperbolic function, an exponential function, a power function and the like according to the relationship between σ and f (x), so as to obtain a corresponding formula;
(3) screening database data information, and drawing an experimental data curve graph;
(4) the data in the database is converted into txt documents.
The test system can effectively change the existing test mode which only can be used for a tensile test machine and a compression test machine, can realize the subsequent data analysis process of the test, effectively shortens the test time and improves the test efficiency.
Claims (9)
1. The utility model provides a shear test device based on universal tester, includes universal tester, universal tester includes the testing machine body and the relative lower pressure head and the last support head that set up about in the testing machine body, its characterized in that still includes the shear test platform of setting in universal tester, the shear test platform includes:
a main platform arranged on the upper support head;
the number of the T-shaped supporting platforms is 2, and the T-shaped supporting platforms are vertically and symmetrically arranged on two sides of the upper surface of the main platform;
the upper top cover is arranged on the lower pressure head through a first electromagnet;
the test joint is arranged at the bottom of the upper top cover;
the two sides of the upper surface of the main platform are symmetrically provided with clamping grooves, and the bottom of the T-shaped supporting table is clamped in the clamping grooves.
2. The shear test device based on the universal testing machine as claimed in claim 1, wherein the T-shaped support platform is provided with a limiting rod on each side along the direction of the slot.
3. The shear test device based on the universal testing machine as claimed in claim 2, wherein the cross-sectional shape of the clamping groove is an inverted T shape, and an insertion plate is arranged at the bottom of the limiting rod and inserted into a transverse groove at the bottom of the clamping groove.
4. The shear test device based on the universal testing machine as claimed in claim 1, wherein the T-shaped support platform comprises a horizontal plate and a vertical plate disposed at the middle of the bottom of the horizontal plate, and the depth of the clamping groove is the same as the height of the vertical plate.
5. The universal tester-based shear test device of claim 1, wherein the bottom of said main platform is mounted on said upper support head by means of a second electromagnet.
6. The shear test device according to claim 1, wherein the main platform is provided with a bubble balancing device at the upper side.
7. The shear test device according to claim 1, wherein the upper surface of the T-shaped support is a non-slip surface.
8. The shear test device according to claim 1, wherein the first electromagnet is an annular electromagnet having an inner diameter corresponding to the outer diameter of the lower ram.
9. A test system adopting the shearing test device based on the universal testing machine as claimed in any one of claims 1 to 8, characterized by further comprising a data acquisition module and a data analysis device, wherein the data acquisition module comprises a plurality of shearing force data acquisition sensors arranged on the shearing test block, the data analysis device is connected with the data acquisition module, and a chip comprising a plurality of data analysis methods is arranged in the data analysis device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920814733.7U CN210465164U (en) | 2019-05-31 | 2019-05-31 | Shearing test device and system based on universal testing machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920814733.7U CN210465164U (en) | 2019-05-31 | 2019-05-31 | Shearing test device and system based on universal testing machine |
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| CN210465164U true CN210465164U (en) | 2020-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920814733.7U Expired - Fee Related CN210465164U (en) | 2019-05-31 | 2019-05-31 | Shearing test device and system based on universal testing machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110108578A (en) * | 2019-05-31 | 2019-08-09 | 上海工程技术大学 | A kind of shearing test device and system based on universal testing machine |
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2019
- 2019-05-31 CN CN201920814733.7U patent/CN210465164U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110108578A (en) * | 2019-05-31 | 2019-08-09 | 上海工程技术大学 | A kind of shearing test device and system based on universal testing machine |
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Granted publication date: 20200505 |