CN104535414A - Shear test fixture - Google Patents
Shear test fixture Download PDFInfo
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- CN104535414A CN104535414A CN201410784853.9A CN201410784853A CN104535414A CN 104535414 A CN104535414 A CN 104535414A CN 201410784853 A CN201410784853 A CN 201410784853A CN 104535414 A CN104535414 A CN 104535414A
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- sliding block
- backstay
- shear
- shaped
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Abstract
The invention discloses a shear test fixture. The shear test fixture can simultaneously satisfy the use of shear strength tests on Z-shaped and T-shaped samples. By using the flexible adjustment of a lower slide block selecting gaskets with different thicknesses, the fixture can be applied to samples with different thicknesses, thereby increasing the versatility of samples; and due to the addition of a fore applied spring and a positioning slide block, the force exerted on a sample in a clamped state can be adjusted, so that the elastic clamping of the sample is realized, therefore, the fixture has the advantages of ensuring that the sample does not slide in the process of testing, and the like.
Description
Technical field
The present invention is a kind of shearing test clamp, relates to material shear resistance detection technique field, is a kind of T-shaped for different-thickness " shear the compression shear test fixture of sample and " Z-type " and " T-shaped " sample.
Background technology
Use the interlaminar shear strength of universal testing machine test material (as fibre reinforced plastics, organic glass etc.), and sheet material is when glueing joint the cohesive strength in face, usual employing " Z-type " and " T-shaped " shear sample, due to complex-shaped, the tested material thickness many sizes of sample, general shearing test clamp only can be tested the sample of single shape and thickness, is difficult to the requirement meeting sample form change.In addition, in shearing test process, use conventional brace sample usually by breasting or fixing simply, easily produce and rock, non-pure shear may be caused to destroy, affect test result accuracy.
Summary of the invention
The present invention designs for the deficiency existed in above-mentioned existing apparatus just and provides a kind of shearing test clamp, its objective is that " Z-type " of simultaneous adaptation different-thickness shears the test request of sample and " T-shaped " shearing sample.
The object of the invention is to be achieved through the following technical solutions:
This kind of shearing test clamp, it is characterized in that: this fixture comprises a pedestal platform (2), the cavity (13) of indent is processed with at the middle part of pedestal platform (2), the bottom of this cavity (13) places two for clamping the sliding block (5) of sample, positioning sliding block (7), sliding block (5), positioning sliding block (7) is respectively by the first backstay (4), second backstay (6) promotes, first backstay (4), second backstay (6) is each passed through the hole (15) on cavity (13) two end faces (14), the top of sliding block (5) is provided with the fixed block (3) be fixedly connected with pedestal platform (2), the lower surface of fixed block (3) and the upper surface of sliding block (5) fit to limit sliding block (5) vertically displacement, namely this vertical direction is sample Impact direction at the trial, the both sides of positioning sliding block (7) are provided with projection (17), two projections (17) are inlaid in the chute (18) on pedestal platform (2) two sidewalls (16) respectively, this chute (18) is in same level to limit positioning sliding block (7) in sample holder side's upward sliding and displacement vertically,
The mounting means that " Z-type " shears sample (1) is:
The right flank that the outside surface of fixed block (3) and " Z-type " shear the right upper arm (19) of sample (1) is fitted, fitted by the right flank of lower surface and lower-left arm (20) that precession first backstay (4) and " Z-type " shear the right upper arm (19) of sample (1) in the top of sliding block (5), the left surface that the lower-left arm (20) of sample (1) is sheared by precession second backstay (6) and " Z-type " in the top of positioning sliding block (7) is fitted, setting-in pad (11) between the left surface that the top of positioning sliding block (7) and " Z-type " shear the right upper arm (19) of sample (1),
The mounting means that " T-shaped " shears sample (12) is:
The front surface that the outside surface of fixed block (3) and " T-shaped " shear the boss (21) of sample (12) is fitted, fitted by the upper surface of lower surface and base plate (22) that precession first backstay (4) and " T-shaped " shear the boss (21) of sample (12) in the top of sliding block (5), the lower surface that the base plate (22) of sample (12) is sheared by precession second backstay (6) and " T-shaped " in the top of positioning sliding block (7) is fitted, the upper surface of the boss (21) of " T-shaped " shearing sample (12) arranges pad (11), this pad (11) is installed in the outside surface of fixed block (3) and " T-shaped " is sheared between the upper surface of base plate (22) of sample (12).
The spring (8) of cavity (13) is positioned at the upper suit of the second backstay (6), one end of this spring (8) and the bottom of positioning sliding block (7) offset, and the other end is by being sleeved on hole gasket (9) on the second backstay (6) and setting nut (10) offsets with the end face (14) of pedestal platform (2).
Above-mentioned " Z-type " shears sample (1) and " T-shaped " is sheared in the mounting means of sample (12), the outside surface of fixed block (3) should be consistent with the shear direction in shear test process, to ensure that the shear direction of sample in shear test process is fixed.In addition, shear sample bottom should and pedestal platform (2) cavity (13) bottom between leave gap as viscous shear space.
Compared with prior art, the invention has the beneficial effects as follows: this shearing test clamp can meet simultaneously " Z-type " and " T-shaped " two type sample shear resistance test use; Utilize the flexible of sliding block and select the pad of different-thickness, fixture application can be made in the sample of different-thickness, increase the versatility of sample; Meanwhile, adding of force application spring and positioning sliding block can adjusting sample clamp position stressed, realizes the resilient clamp of sample, guarantee that in test process, sample the advantages such as slippage does not occur.
Accompanying drawing explanation
Fig. 1 is the structural representation that shearing test clamp of the present invention clamping " Z-type " shears sample
Fig. 2 is the structural representation that shearing test clamp of the present invention clamping " T-shaped " shears sample
Fig. 3 is the perspective view of pedestal platform in shearing test clamp of the present invention
Fig. 4 " Z-type " that be suitable for by the present invention shears the schematic shapes of sample
Fig. 5 " T-shaped " that be suitable for by the present invention shears the schematic shapes of sample
Embodiment
Below with reference to drawings and Examples, technical solution of the present invention is further described:
Shown in accompanying drawing 1 ~ 5, this kind of shearing test clamp, it is characterized in that: this fixture comprises a pedestal platform 2, the cavity 13 of indent is processed with at the middle part of pedestal platform 2, the bottom of this cavity 13 places two for clamping the sliding block 5 of sample, positioning sliding block 7, sliding block 5, positioning sliding block 7 is respectively by the first backstay 4, second backstay 6 promotes, first backstay 4, second backstay 6 is each passed through the hole 15 on cavity 13 two end faces 14, hole 15 is threaded hole, first backstay 4, second backstay 6 is threaded rod, both are threaded connection and implement to rotate, the top of sliding block 5 is provided with the fixed block 3 be fixedly connected with pedestal platform 2, the lower surface of fixed block 3 and the upper surface of sliding block 5 fit to limit sliding block 5 vertically displacement, namely this vertical direction is sample Impact direction at the trial, the both sides of positioning sliding block 7 are provided with projection 17, two projections 17 are inlaid in the chute 18 on pedestal platform 2 two sidewalls 16 respectively, this chute 18 is in same level to limit positioning sliding block 7 in sample holder side's upward sliding and displacement vertically,
The mounting means that " Z-type " shears sample 1 is:
The right flank that the outside surface of fixed block 3 and " Z-type " shear the right upper arm 19 of sample 1 is fitted, fitted by the right flank of lower surface and lower-left arm 20 that precession first backstay 4 and " Z-type " shear the right upper arm 19 of sample 1 in the top of sliding block 5, the left surface that the lower-left arm 20 of sample 1 is sheared by precession second backstay 6 and " Z-type " in the top of positioning sliding block 7 is fitted, between the left surface that the top of positioning sliding block 7 and " Z-type " shear the right upper arm 19 of sample 1, gap between the two filled by setting-in pad 11, pad 11 can according to different sample thickness and depth of parallelism customization, the requirement of different-thickness sample shearing test can be met by replacing pad.Pad 11 upper surface higher than positioning sliding block 7 and fixed block 3, need be guaranteed the direct contact pins upper surface of the seaming chuck of universal testing machine, carries out shear test to sample;
The mounting means that " T-shaped " shears sample 12 is:
The front surface that the outside surface of fixed block 3 and " T-shaped " shear the boss 21 of sample 12 is fitted, fitted by the upper surface of lower surface and base plate 22 that precession first backstay 4 and " T-shaped " shear the boss 21 of sample 12 in the top of sliding block 5, the lower surface that the base plate 22 of sample 12 is sheared by precession second backstay 6 and " T-shaped " in the top of positioning sliding block 7 is fitted, the upper surface shearing the boss 21 of sample 12 in " T-shaped " arranges pad 11, and this pad 11 is installed in the outside surface of fixed block 3 and " T-shaped " is sheared between the upper surface of base plate 22 of sample 12.The installation of " T-shaped " sample needs two panels pad 11 usually, pad 11 is placed between sample and fixed block 3, guarantee sample and fixed block 3 gapless, play stable support function, pad 11 upper surface for directly contacting the seaming chuck of universal testing machine need higher than positioning sliding block 7 and fixed block 3, guarantee the direct contact pins upper surface of the seaming chuck of universal testing machine, shear test is carried out to sample.
On the second backstay 6, suit is positioned at the spring 8 of cavity 13, and one end of this spring 8 and the bottom of positioning sliding block 7 offset, and the other end is offseted by the end face 14 being sleeved on hole gasket 9 on the second backstay 6 and setting nut 10 and pedestal platform 2.Contact because positioning sliding block 7, sample and fixed block 3 is only, not slippage in the enough shear test processes of the clamp position of sample can not be guaranteed.In addition, screw the second backstay 6 if rigid, sample can be caused to be in rigidity clamp position, unavoidable stressed excessive on vertical shear direction, shearing test result is produced to other impact.Therefore, after this structural design makes positioning sliding block 7 and sample contacts, rotating adjusting nut 10 promotes the axially-movable of hole gasket 9 along the second backstay 6, force application spring 8 is compressed, realize positioning sliding block 7 stressed on sample holder direction, and pass to sample, make the stressed clamping of sample elasticity and realize stressed adjustable.
Described hole gasket 9 is square, agrees with pedestal platform 2 interior shape, realizes hole gasket 9 in moving process, keeps consistent with the axial direction of the second backstay 6, make not deflect in spring 8 compression process.
After completing above-mentioned steps, check whether each face of sample and shearing clamp have space, to be adjusted complete, the ram position of shearing clamp and universal testing machine is harmonized, carries out shear test and analysis design mothod result.
Claims (2)
1. a shearing test clamp, it is characterized in that: this fixture comprises a pedestal platform (2), the cavity (13) of indent is processed with at the middle part of pedestal platform (2), the bottom of this cavity (13) places two for clamping the sliding block (5) of sample, positioning sliding block (7), sliding block (5), positioning sliding block (7) is respectively by the first backstay (4), second backstay (6) promotes, first backstay (4), second backstay (6) is each passed through the hole (15) on cavity (13) two end faces (14), the top of sliding block (5) is provided with the fixed block (3) be fixedly connected with pedestal platform (2), the lower surface of fixed block (3) and the upper surface of sliding block (5) fit to limit sliding block (5) vertically displacement, namely this vertical direction is sample Impact direction at the trial, the both sides of positioning sliding block (7) are provided with projection (17), two projections (17) are inlaid in the chute (18) on pedestal platform (2) two sidewalls (16) respectively, this chute (18) is in same level to limit positioning sliding block (7) vertically displacement,
The mounting means that " Z-type " shears sample (1) is:
The right flank that the outside surface of fixed block (3) and " Z-type " shear the right upper arm (19) of sample (1) is fitted, fitted by the right flank of lower surface and lower-left arm (20) that precession first backstay (4) and " Z-type " shear the right upper arm (19) of sample (1) in the top of sliding block (5), the left surface that the lower-left arm (20) of sample (1) is sheared by precession second backstay (6) and " Z-type " in the top of positioning sliding block (7) is fitted, setting-in pad (11) between the left surface that the top of positioning sliding block (7) and " Z-type " shear the right upper arm (19) of sample (1),
The mounting means that " T-shaped " shears sample (12) is:
The front surface that the outside surface of fixed block (3) and " T-shaped " shear the boss (21) of sample (12) is fitted, fitted by the upper surface of lower surface and base plate (22) that precession first backstay (4) and " T-shaped " shear the boss (21) of sample (12) in the top of sliding block (5), the lower surface that the base plate (22) of sample (12) is sheared by precession second backstay (6) and " T-shaped " in the top of positioning sliding block (7) is fitted, the upper surface of the boss (21) of " T-shaped " shearing sample (12) arranges pad (11), this pad (11) is installed in the outside surface of fixed block (3) and " T-shaped " is sheared between the upper surface of base plate (22) of sample (12).
2. shearing test clamp according to claim 1, it is characterized in that: the spring (8) being positioned at cavity (13) at the upper suit of the second backstay (6), one end of this spring (8) and the bottom of positioning sliding block (7) offset, and the other end is by being sleeved on hole gasket (9) on the second backstay (6) and setting nut (10) offsets with the end face (14) of pedestal platform (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410784853.9A CN104535414B (en) | 2014-12-16 | 2014-12-16 | A kind of shearing test clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410784853.9A CN104535414B (en) | 2014-12-16 | 2014-12-16 | A kind of shearing test clamp |
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| CN104535414A true CN104535414A (en) | 2015-04-22 |
| CN104535414B CN104535414B (en) | 2017-07-04 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043850A (en) * | 2015-07-15 | 2015-11-11 | 兰州理工大学 | Guiding device capable of adjusting transverse Hopkinson incident pressure bar bundle |
| CN105300335A (en) * | 2015-11-17 | 2016-02-03 | 中山联合光电科技股份有限公司 | Measuring tool of optical frame and measurement technology using tool |
| CN106769433A (en) * | 2017-03-31 | 2017-05-31 | 沈阳盛远检测技术有限公司 | Composite bends and interlayer shear sample fast fixture |
| CN106840851A (en) * | 2017-03-10 | 2017-06-13 | 上海大学 | The unsaturated soil direct shear apparatus experimental rig of adjustable shearing ring diameter |
| CN106969989A (en) * | 2017-05-16 | 2017-07-21 | 江南工业集团有限公司 | Fibre reinforced composites tubing interlaminar shear strength experimental rig and test method |
| CN107570825A (en) * | 2017-10-24 | 2018-01-12 | 哈尔滨理工大学 | A kind of Wire EDM fixture |
| CN108458907A (en) * | 2018-03-15 | 2018-08-28 | 陕西法士特汽车传动集团有限责任公司 | A kind of synchronizer adhesive strength sample making tooling |
| CN111239040A (en) * | 2020-01-20 | 2020-06-05 | 西北工业大学 | Asymmetric composite material interface shear mechanical property test device and test method |
| CN112730045A (en) * | 2020-12-21 | 2021-04-30 | 中南大学 | Shearing clamp and application method thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043850A (en) * | 2015-07-15 | 2015-11-11 | 兰州理工大学 | Guiding device capable of adjusting transverse Hopkinson incident pressure bar bundle |
| CN105043850B (en) * | 2015-07-15 | 2017-10-17 | 兰州理工大学 | The adjustable horizontal incident depression bar beam guider of Hopkinson of one kind |
| CN105300335A (en) * | 2015-11-17 | 2016-02-03 | 中山联合光电科技股份有限公司 | Measuring tool of optical frame and measurement technology using tool |
| CN106840851A (en) * | 2017-03-10 | 2017-06-13 | 上海大学 | The unsaturated soil direct shear apparatus experimental rig of adjustable shearing ring diameter |
| CN106840851B (en) * | 2017-03-10 | 2019-06-04 | 上海大学 | The unsaturated soil direct shear apparatus experimental rig of adjustable shearing ring diameter |
| CN106769433A (en) * | 2017-03-31 | 2017-05-31 | 沈阳盛远检测技术有限公司 | Composite bends and interlayer shear sample fast fixture |
| CN106969989A (en) * | 2017-05-16 | 2017-07-21 | 江南工业集团有限公司 | Fibre reinforced composites tubing interlaminar shear strength experimental rig and test method |
| CN107570825A (en) * | 2017-10-24 | 2018-01-12 | 哈尔滨理工大学 | A kind of Wire EDM fixture |
| CN108458907A (en) * | 2018-03-15 | 2018-08-28 | 陕西法士特汽车传动集团有限责任公司 | A kind of synchronizer adhesive strength sample making tooling |
| CN111239040A (en) * | 2020-01-20 | 2020-06-05 | 西北工业大学 | Asymmetric composite material interface shear mechanical property test device and test method |
| CN112730045A (en) * | 2020-12-21 | 2021-04-30 | 中南大学 | Shearing clamp and application method thereof |
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