CN209027910U - A kind of tensile test fixture of long test specimen - Google Patents
A kind of tensile test fixture of long test specimen Download PDFInfo
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- CN209027910U CN209027910U CN201821742364.7U CN201821742364U CN209027910U CN 209027910 U CN209027910 U CN 209027910U CN 201821742364 U CN201821742364 U CN 201821742364U CN 209027910 U CN209027910 U CN 209027910U
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- test specimen
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Abstract
The utility model discloses a kind of tensile test fixtures of long test specimen, it include: that two groups of structures are identical, the clamping head of setting symmetrical above and below, clamping head described in every group includes two clamping fixture blocks being symmetrical set and thin circular steel column, through-hole is offered on the upper and lower end face of the clamping fixture block, one end of thin circular steel column is through the through-hole, the clamping fixture block is used to clamp on the one side of test specimen and offers card slot, the first threaded hole is offered on opposite another side, first threaded hole and the through-hole penetrate through, one group of second threaded hole is offered on the leading flank of the clamping fixture block, one group of second threaded hole is penetrated through with the card slot respectively, the side of two groups of thin circular steel columns symmetrical above and below is separately installed with the extensometer for detecting upper and lower two groups thin circular steel column displacements.By the above-mentioned means, the utility model can facilitate the measurement being draw textured to the biggish test specimen of length.
Description
Technical field
The utility model relates to mechanical property of materials test fixture technical fields, more particularly to a kind of stretching of long test specimen
Test fixture.
Background technique
Tension test refers to the test method that material property is measured in the case where bearing axial tensile loads, usually using special
Cupping machine is tested, and tested test specimen two ends are passed through upper fixture respectively and lower clamp is fixed, then up and
Upper fixture and lower fixture are respectively driven downwards, test specimen is stretched, until breaking, and records the various numbers in drawing process
According to.While recording test specimen tensile strength, the stretcher strain amount of clamping extensometer measurement test specimen effective coverage is generally required.
For some strip test specimens, deformed region span is often much larger than the measurement span of general extensometer, thus
It directly can not directly be measured by extensometer.
Therefore it needs to design a kind of test fixture, the direct measurement of test piece deformation will be converted to less than extensometer span
The measurement of short spacing.
Utility model content
The utility model, can conveniently pair mainly solving the technical problems that provide a kind of tensile test fixture of long test specimen
The measurement that the biggish test specimen of length is draw textured.
In order to solve the above technical problems, the technical solution that the utility model uses is: providing a kind of drawing of long test specimen
Stretch test fixture, comprising: the clamping head of identical, the symmetrical above and below setting of two groups of structures, clamping head described in every group include two left sides
Right symmetrically arranged clamping fixture block and thin circular steel column offer through-hole on the upper and lower end face for clamping fixture block, thin circular steel column
One end is used to clamp on the one side of test specimen through the through-hole, the clamping fixture block and offers card slot, the opposite other side
The first threaded hole is offered on face, first threaded hole and the through-hole penetrate through, and open up on the leading flank of the clamping fixture block
There is one group of second threaded hole, one group of second threaded hole is penetrated through with the card slot respectively, two groups of thin circular steel columns symmetrical above and below
Side be separately installed with the extensometer for detecting upper and lower two groups thin circular steel column displacements.
In one preferred embodiment of the utility model, the spacing of the two groups thin round steel intercolumniation symmetrical above and below, which is less than, draws
Stretch the measurement span of meter.
In one preferred embodiment of the utility model, the screw rod end of the first fastening bolt extend into first threaded hole
It is interior to be used to fasten the thin circular steel column being applied in through-hole.
In one preferred embodiment of the utility model, the screw rod end of the second fastening bolt extend into second threaded hole
It is interior to be used to fasten the test specimen penetrated in card slot.
The beneficial effects of the utility model are: using the clamping head of identical, the symmetrical above and below setting of two groups of structures, the head of test specimen
Tail both ends are respectively by the clamping head clamping, and the side installation of corresponding two groups of thin circular steel columns up and down is drawn in upper and lower clamping head
Meter is stretched, the stretcher strain for measuring test specimen is changed into the relative displacement for measuring two groups thin round steel intercolumniation up and down, is realized quick and convenient
The measurement that ground is draw textured the biggish test specimen of length.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of one preferred embodiment of tensile test fixture of long test specimen of the utility model；
Fig. 2 is the structural schematic diagram of clamping fixture block shown in Fig. 1；
The components in the drawings are labeled as follows: 1, clamping fixture block, 2, thin circular steel column, the 3, first fastening bolt, 4, test specimen, 5,
Extensometer, 6, through-hole, 7, card slot, the 8, first threaded hole, the 9, second threaded hole, the 10, second fastening bolt.
Specific embodiment
The preferred embodiment of the utility model is described in detail with reference to the accompanying drawing, so that the advantages of the utility model
It can be easier to be readily appreciated by one skilled in the art with feature, to make the protection scope of the utility model apparent clear
Define.
Fig. 1 ~ Fig. 2 is please referred to, the utility model embodiment includes:
A kind of tensile test fixture of long test specimen, comprising: the clamping head of identical, the symmetrical above and below setting of two groups of structures, every group
The clamping head includes two clamping fixture blocks 1 being symmetrical set and thin circular steel column 2, the upper and lower side of the clamping fixture block 1
Through-hole 6 is offered on face, one end of thin circular steel column 2 is through the through-hole 6, and the clamping fixture block 1 is for clamping the one of test specimen 4
Card slot 7 is offered on side, and the first threaded hole 8, first threaded hole 8 and the through-hole are offered on opposite another side
6 connect, and the screw rod end of the first fastening bolt 3 extend into first threaded hole 8 and is applied in through-hole 6 for fastening
Thin circular steel column 2 is fixedly connected with one end of thin circular steel column 2 with clamping fixture block 2, offers on the leading flank of the clamping fixture block 1
One group of second threaded hole 9, one group of second threaded hole 9 are penetrated through with the card slot 7 respectively, the screw rod end of the second fastening bolt 10
It extend into second threaded hole 9 for fastening the test specimen 4 penetrated in card slot 7, the thin circular steel column 2 of symmetrical above and below two groups
Side be separately installed with the extensometer 5 for detecting upper and lower two groups thin 2 displacement of circular steel column.
Wherein, the spacing between the two groups thin circular steel column 2 symmetrical above and below is less than the measurement span of extensometer 5.
Before carrying out tension test to test specimen 4 using the utility model fixture, one end of four thin circular steel column 2 is distinguished first
It penetrates into the through-hole 6 of clamping fixture block 1, then with the first fastening bolt 3 respectively by one end of four thin circular steel column 2 and retaining wedge
Block 1 is fixedly connected, and makes between the other end of four thin circular steel column 2 that there are certain spacing；Then test specimen 4 is penetrated into retaining wedge
Card slot 7 in block 1, and the both ends end to end of test specimen 4 are fastened in card slot 7 respectively using the second fastening bolt 10；Finally by two
A extensometer 5 is bundled in respectively between two groups thin circular steel column 2 up and down.
When tension test carries out, the stretcher strain of test specimen 4 will drive the two groups thin generation of circular steel column 2 relative displacement up and down, draw
It stretches meter 5 and measures relative shift between upper and lower two groups thin circular steel columns 2, as the stretcher strain amount of test specimen 4.
In the description of the present invention, it should be noted that term " on ", "lower", "left", "right", "inner", "outside" etc.
The orientation or positional relationship of instruction be based on the orientation or positional relationship shown in the drawings or the utility model product use when
The orientation or positional relationship usually put, is merely for convenience of describing the present invention and simplifying the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
The limitation of the utility model.The above descriptions are merely preferred embodiments of the present invention, and it is practical new to be not limited to this
Type, for those skilled in the art, the present invention may have various modifications and changes.All essences in the utility model
Mind and principle within, any modification, equivalent replacement, improvement and so on, should be included in the protection scope of the utility model it
It is interior.
The above description is only the embodiments of the present invention, and therefore it does not limit the scope of the patent of the utility model, all
Equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, is applied directly or indirectly in
Other related technical areas are also included in the patent protection scope of the utility model.
Claims (4)
1. a kind of tensile test fixture of long test specimen characterized by comprising the folder of identical, the symmetrical above and below setting of two groups of structures
Tight head, clamping head described in every group include two clamping fixture blocks being symmetrical set and thin circular steel column, the clamping fixture block
Through-hole is offered on upper and lower end face, one end of thin circular steel column is through the through-hole, and the clamping fixture block is for clamping test specimen
Card slot is offered on one side, and the first threaded hole, first threaded hole and the through-hole are offered on opposite another side
Perforation offers one group of second threaded hole on the leading flank of the clamping fixture block, one group of second threaded hole respectively with it is described
Card slot perforation, the side of two groups of thin circular steel columns symmetrical above and below are separately installed with for detecting two groups thin circular steel column displacement up and down
Extensometer.
2. the tensile test fixture of long test specimen according to claim 1, which is characterized in that described symmetrical above and below two groups thin
The spacing of round steel intercolumniation is less than the measurement span of extensometer.
3. the tensile test fixture of long test specimen according to claim 1, which is characterized in that the screw rod end of the first fastening bolt
It extend into first threaded hole for fastening the thin circular steel column being applied in through-hole.
4. the tensile test fixture of long test specimen according to claim 1, which is characterized in that the screw rod end of the second fastening bolt
It extend into second threaded hole for fastening the test specimen penetrated in card slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821742364.7U CN209027910U (en) | 2018-10-29 | 2018-10-29 | A kind of tensile test fixture of long test specimen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821742364.7U CN209027910U (en) | 2018-10-29 | 2018-10-29 | A kind of tensile test fixture of long test specimen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209027910U true CN209027910U (en) | 2019-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821742364.7U Active CN209027910U (en) | 2018-10-29 | 2018-10-29 | A kind of tensile test fixture of long test specimen |
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| CN (1) | CN209027910U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109060518A (en) * | 2018-10-29 | 2018-12-21 | 常熟正昊电子科技有限公司 | A kind of tensile test fixture of long test specimen |
-
2018
- 2018-10-29 CN CN201821742364.7U patent/CN209027910U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109060518A (en) * | 2018-10-29 | 2018-12-21 | 常熟正昊电子科技有限公司 | A kind of tensile test fixture of long test specimen |
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