CN209356302U - Annular sample tensile test fixture - Google Patents
Annular sample tensile test fixture Download PDFInfo
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- CN209356302U CN209356302U CN201821992854.2U CN201821992854U CN209356302U CN 209356302 U CN209356302 U CN 209356302U CN 201821992854 U CN201821992854 U CN 201821992854U CN 209356302 U CN209356302 U CN 209356302U
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- test fixture
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- 238000009864 tensile test Methods 0.000 title claims abstract description 40
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 11
- 239000010959 steel Substances 0.000 claims abstract description 11
- 238000009434 installation Methods 0.000 abstract description 5
- 230000006378 damage Effects 0.000 abstract description 2
- 208000027418 Wounds and injury Diseases 0.000 abstract 1
- 208000014674 injury Diseases 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 8
- 238000005259 measurement Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000004078 cryogenic material Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses an annular sample tensile test fixture, which is made of low-temperature steel and comprises two tension discs which are oppositely arranged and movably connected along the opposite arrangement direction; the two tension discs are respectively provided with a semi-annular groove, and the two semi-annular grooves are oppositely arranged to form an annular groove; two pulling force dishes all are equipped with baffle subassembly, and baffle subassembly rotates to be connected in the border department of the semi-annular recess that the pulling force dish corresponds. The utility model discloses an adopt anchor clamps that the cryogenic steel made, make anchor clamps can be suitable for the low temperature environment, simultaneously through setting up two tension discs that set up relatively, with two tension discs along the movable connection of relative direction that sets up, set up semi-annular groove on two tension discs to set up the baffle subassembly that rotates the connection on the tension disc, realize the installation and the dismantlement to annular sample, not only solve the problem that easily skids in the low temperature environment, still effectively prevent to pop out from anchor clamps after annular sample breaks and cause the injury to operating personnel.
Description
Technical field
The utility model relates to cryogenic material tension test field, in particular to a kind of ring specimen tensile test fixture.
Background technique
Extensive use with composite material in fields such as Aeronautics and Astronautics, the energy, electrical, chemical industry, communications and transportation, medicine,
It is more and more important to study its mechanical property in low temperature environment.It is well known that it is accurate, reliable, steadily measure it is compound
The cryogenic stretching performance of material be it is extremely difficult, this is mainly due to the limitations of composite material itself, such as material is low
Caused by the particularity that slipping phenomenon and low temperature environment occur when warm lower stress.
Currently, generally all structure is complicated, volume is big, easily skids under low temperature for common stretching clamp, it is not particularly suited for low temperature
It is used under environment.In particular for for ring specimen, being difficult accurately to measure it by fixture come precise positioning at low temperature
Tensile property.
Utility model content
(1) technical problems to be solved
The utility model provides a kind of ring specimen tensile test fixture, to provide a kind of ring suitable under low temperature environment
The fixture of shape sample tensile test.
(2) technical solution
To solve the above problems, the utility model provides a kind of ring specimen tensile test fixture, the ring specimen is drawn
It stretches test fixture to be made of low-temperature steel, comprising: two tension plates being oppositely arranged, and two movable connections of tension plate；
Semi-ring connected in star is equipped on two tension plates, two semi-ring connected in stars are oppositely arranged to form annular groove；Two
The tension plate is equipped with baffle plate assembly, and the baffle plate assembly is rotatably connected on the corresponding semi-ring connected in star of the tension plate
Edge, be used to open or close the annular groove.
Further, further includes: at least one positioning pin；One end that two tension plates are oppositely arranged is equipped with correspondence
In at least one location hole of the positioning pin；The positioning pin is arranged in the positioning hole, and two tension plates pass through
The movable connection of positioning pin.
Further, the baffle plate assembly includes: baffle, holding screw and handle；The handle is fixed on the tightening
On screw, the holding screw is fixed on the baffle, and the flapper is connected to the edge of the semi-ring connected in star.
Further, further includes: at least one extensometer；The extensometer is fixed between two tension plates, is used
In the deflection for measuring two tension plate annular samples.
Further, two tension plates are equipped at least one perpendicular to the extending direction of the annular groove and extend
Count fixing piece, the extensometer by the corresponding extensometer fixing piece of two tension plates be fixed on the tension plate it
Between.
Further, two tension plates are equipped with screw thread perpendicular to the edge of the extending direction of the annular groove
Hole, the extensometer fixing piece are fixed in the threaded hole.
Further, further includes: two stayed masts；It is equipped with fixation hole on the axis of two tension plate radial directions, two
A stayed mast passes through the corresponding fixation hole respectively and is fixed on the tension plate, to pass through the stayed mast to described
Tension plate applies stress.
Further, the annular groove slot bottom is equipped with through-hole, tries annular for passing through for roundlet cylindrical parts
Sample is ejected out of described annular groove.
Further, the different semi-ring connected in star of multiple radiuses is equipped on two tension plates, described in two
Corresponding two semi-ring connected in stars are successively oppositely arranged to form multiple annular grooves on tension plate.
Further, the applicable temperature range of the ring specimen tensile test fixture is 4.2K~300K.
(3) beneficial effect
The utility model provides a kind of ring specimen tensile test fixture, draws by using ring specimen made of low-temperature steel
Test fixture is stretched, ring specimen tensile test fixture is enable to be suitable for low temperature environment, while two be oppositely arranged by setting
Semi-ring connected in star is arranged by two tension plates along the movable connection in direction is oppositely arranged in a tension plate on two tension plates, uses
In clamping ring specimen, and the baffle plate assembly of rotation connection is set on tension plate, realizes the installation and removal to ring specimen,
It not only solves the problems, such as easily to skid in low temperature environment, be popped up from fixture to operator after also ring specimen being effectively prevent to break
It damages, enables stretching by the ring specimen tensile test fixture accurate measure annular sample at low ambient temperatures
Performance.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the ring specimen tensile test fixture provided in the preferred embodiment in the utility model；
Fig. 2 is the structural schematic diagram of the ring specimen provided in the preferred embodiment in the utility model；
Wherein, 1: tension plate；2: ring specimen；3: positioning pin；11: semi-ring connected in star；12: baffle plate assembly；13: positioning
Hole；14: extensometer fixing piece；15: fixation hole；121: baffle；122: holding screw；123: handle.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is a part of the embodiment of the utility model, instead of all the embodiments.Based on the reality in the utility model
Apply example, those of ordinary skill in the art's every other embodiment obtained without making creative work, all
Belong to the range of the utility model protection.
The utility model embodiment provides a kind of ring specimen tensile test fixture, the ring specimen tensile test fixture by
Low-temperature steel is made, and as depicted in figs. 1 and 2, which is mainly used for clamping ring specimen 2, the annular
Sample 2 can be cirque structure or oval hoop, also or other cyclic structures.
As shown in Figure 1, the ring specimen tensile test fixture includes: two tension plates 1 being oppositely arranged, two tension plates
1 shape and structure is all the same, respectively upper pulling force disk and lower pulling force disk, and two movable connections of tension plate 1, can set along opposite
Set direction activity.It is equipped with semi-ring connected in star 11 on two tension plates 1, two semi-ring connected in stars 11 are oppositely arranged that form annular recessed
Slot, to clamp ring specimen 2 by the annular groove.Two tension plates 1 are equipped with baffle plate assembly 12, and the rotation of baffle plate assembly 12 connects
It connects in the edge of the corresponding semi-ring connected in star 11 of tension plate 1, along 1 rotation process of tension plate, to be opened in baffle plate assembly 12
Or annular groove is closed, realize the installation and removal to ring specimen 2.
Wherein, low-temperature steel is also referred to as deep cooling steel or ultralow temperature steel, refers to the steel alloy for being suitable for applying at 0 DEG C or less, and
Can be used below at -196 DEG C, the applicable temperature range of ring specimen tensile test fixture is 4.2K~300K.
In the present embodiment, baffle plate assembly 12 includes: baffle 121, holding screw 122 and handle 123.Handle 123 passes through one
A jackscrew is fixed on holding screw 122, and holding screw 122 is fixed by two sunk screws and baffle 121, recessed in semi-circular
Threaded hole is arranged in the edge of slot 11, and holding screw 122 screws in the threaded hole of upper pulling force disk and lower pulling force disk, so that baffle
121 are rotatably connected on the edge of semi-ring connected in star 11, can limit baffle 121 in semi-ring connected in star by twisting handle 123
Position on 11.
For ring specimen 2 easy to disassemble, through-hole can be set in 11 slot bottom of semi-ring connected in star, for wearing for roundlet cylindrical parts
It crosses to eject ring specimen 2 out of annular groove.
The utility model embodiment provides a kind of ring specimen tensile test fixture, by using annular made of low-temperature steel
Sample tensile test fixture enables ring specimen tensile test fixture to be suitable for low temperature environment, while setting by the way that setting is opposite
Two tension plates 1 set make upper pulling force disk and lower pulling force disk can be along the side of being oppositely arranged by two tension plates 1 along movable connection
To activity, semi-ring connected in star 11 is set on two tension plates 1, for clamping ring specimen 2, and rotation is set on tension plate
The baffle plate assembly 12 of connection, installation and removal of the realization to ring specimen 2, not only solves the problems, such as easily to skid in low temperature environment,
It is popped up from fixture after also effectivelying prevent ring specimen 2 to break and operator is damaged, so that being drawn by the ring specimen
Stretch the tensile property that test fixture is capable of accurate measure annular sample 2 at low ambient temperatures.
Based on the above embodiment, in a preferred embodiment, as shown in Figure 1, the ring specimen tensile test fixture
Further include: at least one positioning pin 3.One end that two tension plates 1 are oppositely arranged is equipped at least one corresponding to positioning pin 3
Location hole 13.Location hole 13 is cylindrical hole, and the position of cylindrical hole is at the center of 2 width direction of ring specimen, cylindrical hole
There is chamfering, is put into convenient for positioning pin 3.Positioning pin 3 is arranged in location hole 13, and two tension plates 1 are set by positioning pin 3 along opposite
Set the movable connection in direction.Particularly, it is 12mm that diameter, which can be selected, in positioning pin 3, and there is the cylindrical structure of chamfering at edge, with two
13 clearance fit of location hole of tension plate 1, makes two tension plates can be with smooth movement.
Based on the above embodiment, in a preferred embodiment, as shown in Figure 1, ring specimen tensile test fixture also
It include: at least one extensometer.Extensometer can be fixed between two tension plates 1, for measuring two 1 annular of tension plate examinations
The deflection of sample 2.
According to required measurement accuracy, the quantity of extensometer can adjust, in 1 one or both ends of tension plate, extensometer is set.Draw
Stretching meter can be fixed by extensometer fixing piece 14, two tension plates 1 perpendicular to the extending direction of annular groove be equipped with to
A few extensometer fixing piece 14, extensometer by two corresponding extensometer fixing pieces 14 of tension plate 1 be fixed on tension plate 1 it
Between.
Wherein, it can be equipped with threaded hole perpendicular to the edge of the extending direction of annular groove in two tension plates 1, will extended
Meter fixing piece 14 is fixed in threaded hole.Specifically, M3 threaded hole can be set at left and right sides of drawing godet 1, will be drawn by screw
It is fixed to stretch meter fixing piece 14.Be provided with straight trough hole on extensometer fixing piece 14, be conveniently adjusted its position, straight trough hole side by its
Wedge angle makes it possible to preferably fix extensometer, and the position of extensometer fixing piece 14 is in 2 width direction of ring specimen
Heart position.
In the present embodiment, the ring specimen tensile test fixture further include: two stayed masts, it is radial with two tension plates
Fixation hole 15 is equipped on axis, two stayed masts are fixed in corresponding fixation hole, fix respectively by corresponding fixation hole
On the tension plate, to apply stress to tension plate 1 by stayed mast.Specifically, fixation hole 15 may be provided at upper pulling force disk
Top and lower pulling force disk bottom, can be selected M16 threaded hole, the position of threaded hole is at the center of 2 width direction of ring specimen
Position.
Based on the above embodiment, using the ring specimen tensile test fixture come measure annular sample 2 tensile strength and
Elasticity modulus includes the following steps: refering to fig. 1 and Fig. 2
Step 1: first by two positioning pins 3 by penetrating upper pulling force disk.
Step 2: lower pulling force disk is combined with two positioning pins 3.
Step 3: extensometer fixing piece 14 is separately fixed to the corresponding position of upper pulling force disk and lower pulling force disk by screw.
Step 4: handle 123 is fixed by jackscrew and holding screw 122, it is then that holding screw 122 is heavy by two
Head screw and baffle 121 are fixed, finally screw in holding screw 122 in the threaded hole of upper pulling force disk and lower pulling force disk.
Step 5: upper pulling force disk is mounted on testing machine.
Step 6: lower pulling force disk being mounted on testing machine, Adjustment Tests machine.
Step 7: pasting foil gauge on ring specimen 2.
Step 8: Adjustment Tests machine keeps upper pulling force disk and lower pulling force disk close, so that ring specimen 2 is put into annular groove,
And turn handle 123, cover baffle 121 by annular groove.
Step 9: the relative position of the position and extensometer fixing piece 14 of adjustment upper pulling force disk and lower pulling force disk will extend
Meter is fixed between two extensometer fixing pieces 14.
Step 10: load being applied to ring specimen 2, until destroying, records data.
It can require to be adjusted according to actual measurement accuracy during specific measurement.
In addition, in other embodiments, for the annular examination for measuring different-diameter convenient for the ring specimen tensile test fixture
Sample 2 can be equipped with the different semi-ring connected in star 11 of multiple radiuses, i.e., in upper pulling force disk and drop-down on two tension plates 1
Semi-ring connected in star 11 is respectively provided on power disk, corresponding two semi-ring connected in stars 11 are successively oppositely arranged on two tension plates 1
Multiple annular grooves are formed, are oppositely arranged corresponding two semi-ring connected in stars 11 on upper pulling force disk and lower pulling force disk successively
Form multiple annular grooves.
In conclusion the utility model embodiment provides a kind of ring specimen tensile test fixture, by using low-temperature steel
Manufactured ring specimen tensile test fixture enables ring specimen tensile test fixture to be suitable for low temperature environment, passes through simultaneously
Two tension plates 1 being oppositely arranged are set, by two tension plates 1 along the movable connection in direction is oppositely arranged, in two tension plates 1
For clamping ring specimen 2, and the baffle plate assembly 12 of rotation connection is arranged on tension plate in upper setting semi-ring connected in star 11, real
Now to the installation and removal of ring specimen 2, not only solves the problems, such as easily to skid in low temperature environment, also effectively prevent ring specimen 2
It is popped up from fixture after breaking and operator is damaged, enabled through the ring specimen tensile test fixture in low temperature
The tensile property of accurate measure annular sample 2 under environment.
Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that:
It is still possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is carried out etc.
With replacement；And these are modified or replaceed, various embodiments of the utility model technology that it does not separate the essence of the corresponding technical solution
The spirit and scope of scheme.
Claims (10)
1. a kind of ring specimen tensile test fixture, which is characterized in that the ring specimen tensile test fixture is by low temperature steel
At, comprising:
Two tension plates being oppositely arranged, and two movable connections of tension plate；Half is equipped on two tension plates
Annular groove, two semi-ring connected in stars are oppositely arranged to form annular groove；Two tension plates are equipped with baffle plate assembly,
The baffle plate assembly is rotatably connected on the edge of the corresponding semi-ring connected in star of the tension plate, is used to open or closes institute
State annular groove.
2. ring specimen tensile test fixture according to claim 1, which is characterized in that further include:
At least one positioning pin；One end that two tension plates are oppositely arranged is equipped at least one corresponding to the positioning pin
A location hole；The positioning pin is arranged in the positioning hole, and two tension plates pass through the movable connection of the positioning pin.
3. ring specimen tensile test fixture according to claim 1, which is characterized in that the baffle plate assembly includes:
Baffle, holding screw and handle；The handle is fixed on the holding screw, and the holding screw is fixed on the gear
On plate, the flapper is connected to the edge of the semi-ring connected in star.
4. ring specimen tensile test fixture according to claim 1, which is characterized in that further include:
At least one extensometer；The extensometer is fixed between two tension plates, for measuring two tension plates
The deflection of annular sample.
5. ring specimen tensile test fixture according to claim 4, which is characterized in that two tension plates perpendicular to
The extending direction of the annular groove is equipped at least one extensometer fixing piece, and the extensometer passes through two tension plates
The corresponding extensometer fixing piece is fixed between the tension plate.
6. ring specimen tensile test fixture according to claim 5, which is characterized in that two tension plates perpendicular to
The edge of the extending direction of the annular groove is equipped with threaded hole, and the extensometer fixing piece is fixed in the threaded hole.
7. ring specimen tensile test fixture according to claim 1, which is characterized in that further include:
Two stayed masts；Fixation hole is equipped on the axis of two tension plate radial directions, two stayed masts pass through respectively
The corresponding fixation hole is fixed on the tension plate, to apply stress to the tension plate by the stayed mast.
8. ring specimen tensile test fixture according to claim 1, which is characterized in that the annular groove slot bottom is equipped with
Through-hole ejects ring specimen for passing through for roundlet cylindrical parts out of described annular groove.
9. ring specimen tensile test fixture according to claim 1, which is characterized in that be all provided on two tension plates
Have the semi-ring connected in star that multiple radiuses are different, on two tension plates corresponding two semi-ring connected in stars according to
It is secondary to be oppositely arranged to form multiple annular grooves.
10. ring specimen tensile test fixture described according to claim 1~any one of 9, which is characterized in that the annular
The applicable temperature range of sample tensile test fixture is 4.2K~300K.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821992854.2U CN209356302U (en) | 2018-11-29 | 2018-11-29 | Annular sample tensile test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821992854.2U CN209356302U (en) | 2018-11-29 | 2018-11-29 | Annular sample tensile test fixture |
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| Publication Number | Publication Date |
|---|---|
| CN209356302U true CN209356302U (en) | 2019-09-06 |
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ID=67798121
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821992854.2U Active CN209356302U (en) | 2018-11-29 | 2018-11-29 | Annular sample tensile test fixture |
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| Country | Link |
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| CN (1) | CN209356302U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109443910A (en) * | 2018-11-29 | 2019-03-08 | 中国科学院理化技术研究所 | Annular sample tensile test fixture |
-
2018
- 2018-11-29 CN CN201821992854.2U patent/CN209356302U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109443910A (en) * | 2018-11-29 | 2019-03-08 | 中国科学院理化技术研究所 | Annular sample tensile test fixture |
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