CN204064797U - A kind of shearing test stationary fixture - Google Patents
A kind of shearing test stationary fixture Download PDFInfo
- Publication number
- CN204064797U CN204064797U CN201420088083.XU CN201420088083U CN204064797U CN 204064797 U CN204064797 U CN 204064797U CN 201420088083 U CN201420088083 U CN 201420088083U CN 204064797 U CN204064797 U CN 204064797U
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- fixture block
- plane
- shearing test
- top cover
- fixed groove
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- 238000012360 testing method Methods 0.000 title claims abstract description 58
- 238000010008 shearing Methods 0.000 title claims abstract description 43
- 239000000523 sample Substances 0.000 description 42
- 239000000463 material Substances 0.000 description 12
- 238000010586 diagram Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 210000002421 cell wall Anatomy 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 230000008520 organization Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000012792 core layer Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a kind of shearing test stationary fixture, comprise base, lower fixture block, middle fixture block, upper fixture block and top cover; Described lower fixture block is fixedly connected with described base; Described upper fixture block is fixedly connected with described top cover; Described middle fixture block is arranged between described upper fixture block and lower fixture block; Described upper fixture block and lower fixture block have an inclined-plane respectively; Described middle fixture block has ramp and lower inclined plane; Under assembled state, the inclined-plane of described upper fixture block mates to contact with the ramp of described middle fixture block and connects, and the inclined-plane of described lower fixture block mates to contact with the lower inclined plane of described middle fixture block and connects; Described middle fixture block is provided with at least one sample fixed groove, and this sample fixed groove mates to fasten with another sample fixed groove of corresponding position on upper fixture block or lower fixture block and forms sample lock chamber; Described base is provided with at least two gag lever posts, under assembled state, this gag lever post is positioned at fixture block both sides, extends up to reach top cover from base, and passes from the hole top cover.
Description
Technical field
The utility model relates to a kind of test unit, refers to a kind of shearing test stationary fixture especially.
Background technology
Shear resistance is a kind of common parameters of reaction material mechanical property, measures material shear resistance, is the fundamental test method of mechanical property of materials test, is mainly used in the part and the material that bear shear-type load.
The shear resistance of material is measured in prior art, generally that material is positioned on the shearing clamp of testing apparatus, this shearing clamp applies direct shear acting force on sample material, make sample material cut-off under the effect of shear-type load, shear action force value when being cut off by test specimen and sectional area, can obtain the shear resistance value of material.Because this fixture has certain limitation, such as, in process of the test, need equipment to apply to be parallel to the acting force of shear surface to sample material, and in process of the test, the scope of activities of fixture is larger etc.
Utility model content
In view of this, the purpose of this utility model is to propose a kind of shearing test stationary fixture.This fixture directly applies to sample the acting force being parallel to shear surface without the need to testing equipment, and structure is simple, easy to use.
Based on the shearing test stationary fixture that above-mentioned purpose the utility model provides, comprise base, lower fixture block, middle fixture block, upper fixture block and top cover; Described lower fixture block is fixedly connected with described base; Described upper fixture block is fixedly connected with described top cover; Described middle fixture block is arranged between described upper fixture block and lower fixture block; Described upper fixture block and lower fixture block have an inclined-plane respectively; Described middle fixture block has ramp and lower inclined plane; Under assembled state, the inclined-plane of described upper fixture block mates to contact with the ramp of described middle fixture block and connects, and the inclined-plane of described lower fixture block mates to contact with the lower inclined plane of described middle fixture block and connects; Described middle fixture block is provided with at least one sample fixed groove, and this sample fixed groove mates to fasten with another sample fixed groove of corresponding position on upper fixture block or lower fixture block and forms sample lock chamber; Described base is provided with at least two gag lever posts, under assembled state, this gag lever post is positioned at fixture block both sides, extends up to reach top cover from base, and passes from the hole top cover.
Optionally, described sample fixed groove is arranged at corresponding position on the ramp of middle fixture block and the inclined-plane of upper fixture block, and corresponding position on the inclined-plane of the lower inclined plane of middle fixture block and lower fixture block.
Optionally, the groove face of described sample fixed groove opposition is stepped.
Optionally, described base and top cover are cube or right cylinder.
Optionally, described upper fixture block, middle fixture block and lower fixture block have longitudinal cylinder respectively.
Optionally, described longitudinal cylinder is the face of cylinder or square column face.
Optionally, the pitch angle, inclined-plane of described upper fixture block is 40-50 °.
Optionally, the pitch angle, inclined-plane of described lower fixture block is 40-50 °.
Optionally, the surface bottom of described upper fixture block and the beveled top end of lower fixture block are provided with plane.
As can be seen from above, the shearing test stationary fixture that the utility model provides, there are at least two fixture blocks, the inclined-plane of coupling is mutually provided with between adjacent two fixture blocks, inclined-plane is provided with sample fixed groove, in shearing test process, blessing can be carried out to sample to fix, and then ensure carrying out smoothly of shearing test; The force of compression of testing equipment is converted into shearing force, can short form test process, and can the project organization of short form test equipment.In addition, the shearing test stationary fixture that the utility model embodiment provides, its inclined-plane adopts suitable angle, makes shearing test more stable; Also be applicable to the kind material different with thickness simultaneously.
Accompanying drawing explanation
Fig. 1 is the shearing test stationary fixture schematic diagram of the utility model embodiment;
Fig. 2 is the shearing test stationary fixture isolation of components schematic diagram of the utility model embodiment;
Fig. 3 is the shearing test stationary fixture top cover of the utility model embodiment and upper fixture block connector schematic diagram;
Shearing test stationary fixture that Fig. 4 is the utility model embodiment splits remaining structure schematic diagram after the connector that top cover and upper fixture block form;
Fig. 5 is upper fixture block and the top cover connector schematic diagram of another embodiment of the utility model;
Fig. 6 A is upper fixture block and the top cover connector schematic diagram of another embodiment of the utility model;
Shearing test stationary fixture that Fig. 6 B is another embodiment of the utility model splits remaining structure schematic diagram after the connector that top cover and upper fixture block form;
Fig. 7 is the shearing test stationary fixture one-piece construction schematic diagram of another embodiment of the utility model.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with specific embodiment, and with reference to accompanying drawing, the utility model is further described.
As an embodiment of the present utility model, the structure of described shearing test stationary fixture as shown in Figure 1.Comprise base 1, lower fixture block 2, middle fixture block 3, upper fixture block 4, top cover 5, gag lever post 6.Wherein, base 1 is connected with lower fixture block 2, and upper fixture block 4 is connected with top cover 5, and middle fixture block 3 is arranged between fixture block 4 and lower fixture block 2.Gag lever post 6 is connected with base 1, is arranged at lower fixture block 2 both sides, and upwards extends, and through hole corresponding on top cover 5, is connected further with top cover 5.
Base 1 in the present embodiment xsect is square, and in other embodiments, the xsect of base 1 can be other shape, such as circular.
Fig. 2 is the shearing test stationary fixture isolation of components schematic diagram of the present embodiment, and upper fixture block 4, middle fixture block 3 prolong the direction assembling in figure shown in arrow A.The bottom surface of lower fixture block 2 is connected with base 1, has an inclined-plane 21 and four fore-and-aft planes 22.Middle fixture block 3 is arranged between fixture block 4 and lower fixture block 2, has ramp 31, lower inclined plane 32 and fore-and-aft plane 33.Upper fixture block 4 top is connected with top cover 1, has an inclined-plane 41 and four fore-and-aft planes 42.Under assembled state, the inclined-plane 21 of lower fixture block 2 substantially coordinates to contact with the lower inclined plane 32 of middle fixture block and connects; The inclined-plane 41 of upper fixture block 4 substantially contacts with the ramp 31 of middle fixture block and connects; Lower fixture block 2, middle fixture block 3, upper fixture block 4 are spliced into a rectangular parallelepiped substantially.
In other embodiments, the stereoscopic mechanism that lower fixture block, middle fixture block, upper fixture block are spliced into may not be rectangular shape.Preferably, the vergence direction of the inclined-plane of lower fixture block and the lower inclined plane of middle fixture block is contrary; The vergence direction of the inclined-plane of upper fixture block and the lower inclined plane of middle fixture block is contrary.
In the present embodiment, top cover 5 and upper fixture block 4 link into an integrated entity, and the structure of this connector as shown in Figure 3.Shearing test stationary fixture that Fig. 4 is the present embodiment splits remaining structure schematic diagram after the connector that top cover 5 and upper fixture block 4 form.The ramp of middle fixture block 3 and the inclined-plane of upper fixture block 4 are respectively equipped with the sample fixed groove 7 of coupling mutually, and when middle fixture block 3 and upper fixture block 4 coordinate contact to be connected, the sample fixed groove 7 of the two engages and forms sample lock chamber.During use, sample is positioned in the sample fixing 7 of middle fixture block 3, upper fixture block 4 is positioned on middle fixture block 3, sample is made to be in formed sample lock chamber, two opposites of sample contact with two faces of sample fixed groove 7, pressing cover 5, make the power that presses down produce the shearing force of the bevel direction along middle fixture block 3 and upper fixture block 4, act on sample material, sample is sheared.Be subject to shearing force when sample material and produce fracture, upper fixture block 4 produces downward moving along inclined-plane, and due to the restriction effect of gag lever post 6 pairs of top covers 5 and base 1 relative position, middle fixture block 3 is extruded between upper fixture block 4 and lower fixture block 2.
Equally, the lower inclined plane of middle fixture block 3 and the ramp of lower fixture block 2 are also respectively equipped with the sample fixed groove of mutually coupling, during use, also sample can be positioned between middle fixture block 3 and lower fixture block 2, under press fixture block 4 and middle fixture block 3 pairs of samples carry out shear test.
In the present embodiment, sample fixed groove 7 is square groove.In other embodiments, sample fixing 7 also can be other geometric configuration.
In other embodiments, sample fixed groove can only arrange two, lays respectively at corresponding position on middle fixture block ramp and upper fixture block inclined-plane; Or lay respectively at corresponding position on middle fixture block lower inclined plane and lower fixture block inclined-plane.
In theory, the arbitrary value within the scope of 0-90 ° can be arranged in the inclined-plane of lower fixture block 2, middle fixture block 3, upper fixture block 4 and the angle of inclination of surface level, but finds through actual tests, if the bevel inclination angle of each fixture block is excessive, then and process of the test shortcoming stability; If the bevel inclination angle of each fixture block is too small, then test efficiency can reduce, and therefore, preferably, the bevel inclination angle of lower fixture block, middle fixture block, upper fixture block is 40-50 °.Generally, the pitch angle, inclined-plane in this section refers to the acute angle value that inclined-plane and horizontal plane produce.
In other embodiments, the cell wall of sample fixed groove is stair-stepping, sample fixed groove 57 on upper fixture block 51 as shown in Figure 5, further, in in this embodiment, the sample fixed groove of fixture block ramp is identical with sample fixed groove 57 shape on upper fixture block 51 and position is corresponding, and then under assembled state in the sample fixed groove of fixture block ramp can mate with the sample fixed groove 57 of upper fixture block 51 and contact, two opposition cell walls are stepped, thus can test the sample material of different-thickness.In addition, the sample fixed groove of set on lower fixture block inclined-plane and middle fixture block lower inclined plane mutual coupling also can adopt stepped cell wall.
In certain embodiments, described fixture block: comprise fixture block, middle fixture block, lower fixture block, can comprise at least one inclined-plane and longitudinal face of cylinder, lower fixture block as shown in Figure 7.
In other embodiments, as shown in Fig. 6 A, 6B, the life-span of fixture is reduced in order to the impulsive force going up fixture block 64 and lower fixture block 62 collision generation when reducing sample fracture produces destruction to upper and lower fixture block, the bottom, inclined-plane 641 of upper fixture block 64 is provided with plane 68, the top, inclined-plane 621 of lower fixture block 62 is provided with plane 69.Plane on upper and lower inclined-plane should size to fit, avoids producing interference to arranging of sample fixed groove.
The shearing test stationary fixture that each embodiment of the utility model provides, can be applicable to the shear test of various material, more especially the material tested should not be carried out in the clamp state, such as three-dimensional hollow compound substance, this material has special sandwich structure, specifically comprise the hollow core sublayer between upper and lower two top layers and top layer, this core layer has hole and has different fuse height.
The shearing test stationary fixture that each embodiment of the utility model provides, can be applicable to multiple mechanics experimental equipment, especially, when the test fixture adopting the utility model embodiment to provide carries out shearing test, equipment is only needed to apply longitudinal pressure to the fixture being clamped with sample material, thus adopt this test fixture the longitudinal pressure of testing equipment can be converted to shearing force, and then can mechanics experimental equipment be simplified.
As can be seen from above, the shearing test stationary fixture that the utility model provides, there are at least two fixture blocks, the inclined-plane of coupling is mutually provided with between adjacent two fixture blocks, inclined-plane is provided with sample fixed groove, in shearing test process, blessing can be carried out to sample to fix, and then ensure carrying out smoothly of shearing test; The force of compression of testing equipment is converted into shearing force, can short form test process, and can the project organization of short form test equipment.In addition, the shearing test stationary fixture that the utility model embodiment provides, its inclined-plane adopts suitable angle, makes shearing test more stable; Also be applicable to the kind material different with thickness simultaneously.
Those of ordinary skill in the field are to be understood that: the foregoing is only specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle; any amendment of making, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (8)
1. a shearing test stationary fixture, is characterized in that, comprises base, lower fixture block, middle fixture block, upper fixture block and top cover; Described lower fixture block is fixedly connected with described base; Described upper fixture block is fixedly connected with described top cover; Described middle fixture block is arranged between described upper fixture block and lower fixture block; Described upper fixture block and lower fixture block have an inclined-plane respectively; Described middle fixture block has ramp and lower inclined plane; Under assembled state, the inclined-plane of described upper fixture block mates to contact with the ramp of described middle fixture block and connects, and the inclined-plane of described lower fixture block mates to contact with the lower inclined plane of described middle fixture block and connects; Described middle fixture block is provided with at least one sample fixed groove, and this sample fixed groove mates to fasten with another sample fixed groove of corresponding position on upper fixture block or lower fixture block and forms sample lock chamber; Described base is provided with at least two gag lever posts, under assembled state, this gag lever post is positioned at fixture block both sides, extends up to reach top cover from base, and passes from the hole top cover.
2. shearing test stationary fixture according to claim 1, it is characterized in that, described sample fixed groove is arranged at corresponding position on the ramp of middle fixture block and the inclined-plane of upper fixture block, and corresponding position on the inclined-plane of the lower inclined plane of middle fixture block and lower fixture block.
3. shearing test stationary fixture according to claim 1, is characterized in that, the groove face of described sample fixed groove opposition is stepped.
4. shearing test stationary fixture according to claim 1, is characterized in that, described base and top cover are cube or right cylinder.
5. shearing test stationary fixture according to claim 1, is characterized in that, described upper fixture block, middle fixture block and lower fixture block have longitudinal cylinder respectively.
6. shearing test stationary fixture according to claim 5, is characterized in that, described longitudinal cylinder is the face of cylinder or square column face.
7. shearing test stationary fixture according to claim 1, is characterized in that, the pitch angle, inclined-plane of described upper fixture block is 40-50 °;
And/or the pitch angle, inclined-plane of described lower fixture block is 40-50 °.
8. shearing test stationary fixture according to claim 1, is characterized in that, the surface bottom of described upper fixture block and the beveled top end of lower fixture block are provided with plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420088083.XU CN204064797U (en) | 2014-02-28 | 2014-02-28 | A kind of shearing test stationary fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420088083.XU CN204064797U (en) | 2014-02-28 | 2014-02-28 | A kind of shearing test stationary fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204064797U true CN204064797U (en) | 2014-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420088083.XU Expired - Lifetime CN204064797U (en) | 2014-02-28 | 2014-02-28 | A kind of shearing test stationary fixture |
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| CN (1) | CN204064797U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104964884A (en) * | 2015-06-26 | 2015-10-07 | 中国科学院地质与地球物理研究所 | Large soil engineering direct shear strength testing device on low temperature control conditions |
| CN105445098A (en) * | 2015-12-10 | 2016-03-30 | 江门气派摩托车有限公司 | Brake-shoe block clamp for shearing test |
| CN105486578A (en) * | 2016-01-13 | 2016-04-13 | 中国科学院理化技术研究所 | Sample clamping device for measuring shearing force at low temperature |
-
2014
- 2014-02-28 CN CN201420088083.XU patent/CN204064797U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104964884A (en) * | 2015-06-26 | 2015-10-07 | 中国科学院地质与地球物理研究所 | Large soil engineering direct shear strength testing device on low temperature control conditions |
| CN104964884B (en) * | 2015-06-26 | 2018-02-13 | 中国科学院地质与地球物理研究所 | Large geotechnical direct shear strength test device under low temperature control condition |
| CN105445098A (en) * | 2015-12-10 | 2016-03-30 | 江门气派摩托车有限公司 | Brake-shoe block clamp for shearing test |
| CN105486578A (en) * | 2016-01-13 | 2016-04-13 | 中国科学院理化技术研究所 | Sample clamping device for measuring shearing force at low temperature |
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| Date | Code | Title | Description |
|---|---|---|---|
| DD01 | Delivery of document by public notice |
Addressee: Li Diansen Document name: Notification to Make Rectification |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141231 |
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| CX01 | Expiry of patent term |