CN207528566U - The biaxial stretch-formed mechanics performance testing device of low-temperature in-site - Google Patents
The biaxial stretch-formed mechanics performance testing device of low-temperature in-site Download PDFInfo
- Publication number
- CN207528566U CN207528566U CN201721686125.XU CN201721686125U CN207528566U CN 207528566 U CN207528566 U CN 207528566U CN 201721686125 U CN201721686125 U CN 201721686125U CN 207528566 U CN207528566 U CN 207528566U
- Authority
- CN
- China
- Prior art keywords
- iii
- temperature
- biaxial stretch
- screw
- performance testing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 54
- 238000011065 in-situ storage Methods 0.000 claims abstract description 13
- 230000008878 coupling Effects 0.000 claims abstract description 11
- 238000010168 coupling process Methods 0.000 claims abstract description 11
- 238000005859 coupling reaction Methods 0.000 claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 11
- 239000004065 semiconductor Substances 0.000 claims abstract description 11
- 230000008569 process Effects 0.000 claims abstract description 10
- 238000006073 displacement reaction Methods 0.000 claims description 20
- 238000001816 cooling Methods 0.000 claims description 11
- 238000005057 refrigeration Methods 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 6
- 239000004519 grease Substances 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 230000002457 bidirectional effect Effects 0.000 claims description 2
- 238000005259 measurement Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 31
- 238000011160 research Methods 0.000 abstract description 9
- 238000011056 performance test Methods 0.000 abstract description 5
- 238000012544 monitoring process Methods 0.000 abstract description 4
- 238000004088 simulation Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000007906 compression Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 208000013201 Stress fracture Diseases 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 208000010392 Bone Fractures Diseases 0.000 description 1
- 206010017076 Fracture Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 208000017740 grade III prostatic intraepithelial neoplasia Diseases 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000004154 testing of material Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Abstract
The utility model is related to a kind of biaxial stretch-formed mechanics performance testing devices of low-temperature in-site, belong to Mechanics Performance Testing field.Using vertical structure, stepping motor is connected by shaft coupling with precision ball screw, by screw nut driven by the precise linear movement for being changed into maneuvering board of motor, and then realizes that X-axis, Y-axis synchronize biaxial stretch-formed loading.Temperature load-on module is freezed using semiconductor chilling plate, and range of temperature is 0 DEG C ~ 30 DEG C, realizes the biaxial stretch-formed mechanics performance test of material under temperature match curing conditions.Coordinate light microscope, dynamic monitoring in situ is carried out to Micromechanics behavior and the damage mechanisms of test specimen in test process.Advantage is：It can be with the true service state of simulation material；Test device is compact-sized, floor space is small, convenient for integrated and control, is of great significance to low temperature environment complex stress condition material mechanical performance testing research.
Description
Technical field
The utility model is related to the precision scientific instrument fields in material micro mechanical property test field, more particularly to a kind of
The biaxial stretch-formed mechanics performance testing device of low-temperature in-site.Can accurately test material bear to synchronize under cryogenic it is biaxial stretch-formed
When mechanical behavior, damage mechanisms and performance reduction rule.
Background technology
The mechanical property of material be evaluate its quality, function admirable leading indicator be designed calculating it is important according to
According to the method for traditional test material mechanical property is the experiment of Simple stress condition, such as stretches, compresses and reverses.But
Under practical service state, usual material is not only subjected only to the effect of single load.However traditional material mechanical performance test
Technology only measures under single load effect, so cannot reflect the stress of component completely, this is also that part shifts to an earlier date
One of the main reason for failure.With the proposition of Plate Theory, the application of plank is also more and more extensive, the stress one of plank
As be typical biaxial stress.Therefore, traditional test device can not embody its stress, the mechanics measured completely
Parameter does not have absolute reference value yet.Since relatively thin plank typically exhibits a kind of anisotropy, so uniaxial stretch
Experiment can not accurate description thin plate mechanical property.
The mechanical property of material is affected by many factors, wherein temperature then be influence its mechanical property an important factor for it
One.And in recent years, people for response environment deterioration and resource exhaustion, start low to the outer space, polar region and benthos etc.
Warm environment is frequently explored.Remove to instruct material under low temperature environment using the material mechanical parameters measured under normal temperature condition
Or the design and use of structure, it is clear that do not have scientific and practicability.Therefore, on whether influencing material under low-temperature working environment
Mechanical property research, especially with regard to research of the temperature factor to material behavior and damage influence mechanism, by the country
The extensive concern of outer scholar.Therefore, if can be in material mechanical performance test, exploitation one kind can provide true close to material
Real stressing conditions, the mechanical testing instrument of the true environment residing for simulation material just can more accurately obtain material in reality
Mechanical property under service condition.
At present, using ripe biaxial stretch-formed compression verification system since mechanical structure is larger, it is impossible to be set with micro-imaging
It is standby compatible, it is difficult to in-situ monitoring means to be provided while load test is carried out, to anisotropic material in biaxial stretch-formed compression
Micromechanics behavior and damage mechanisms under load lack effective research；Existing original position dual-spindle testing device, which also rarely has, to be referred to
The function being capable of providing under different temperatures environment.
Invention content
The purpose of this utility model is to provide a kind of biaxial stretch-formed mechanics performance testing devices of low-temperature in-site, solve existing
There is the above problem existing for technology.The utility model device uses vertical structure, and instrument whole height is relatively low, meets specified conditions
Lower low-temperature in-site biaxial tension-compression strength requirement.Stepping motor is connected by shaft coupling with precision ball screw in device, is passed through
The precise linear movement for being changed into maneuvering board of motor is realized the synchronization twin shaft of X-axis, Y-axis by screw nut driven
Tensile loads.Temperature load-on module is freezed using semiconductor chilling plate, and range of temperature is 0 DEG C ~ 30 DEG C, realizes temperature match curing conditions
The lower biaxial stretch-formed mechanics performance test of material.Coordinate light microscope, to Micromechanics behavior and the damage of test specimen in test process
Hinder mechanism and carry out dynamic monitoring in situ.The utility model can be with the true service state of simulation material；Test device is compact-sized, accounts for
Ground area is small, convenient for integrated and control, has important meaning to low temperature environment complex stress condition material mechanical performance testing research
Justice.
The utility model is effectively solved and biaxial stretch-formed is difficult to realize synchronous loading by innovating the novel structure proposed
Problem, test device is compact-sized, floor space is small, convenient for integrated and control, has a good application prospect, for low temperature
Under the conditions of material testing research of mechanical property when bearing complex stress condition have a very important significance.
The above-mentioned purpose of the utility model is achieved through the following technical solutions：
The biaxial stretch-formed mechanics performance testing device of low-temperature in-site, overall structure use vertical, including driving unit, pass
Moving cell, detecting signal unit, clamping unit and temperature loading unit.Wherein driving unit provides stretching by stepper motor 1
Load power；Gear unit realizes the lower X-axis of single motor driving using screw 9 and moving leader 10, the Bidirectional power of Y-axis transmits；
Detecting signal unit is connected with gear unit, and power and displacement are carried out using pulling force sensor 18 and linear grating displacement sensor
It measures, while is equipped with light microscope and dynamic in-situ observation is carried out to the mechanical behavior and damage mechanisms of sample；Clamping is single
Cruciform specimen 22 is fixed in first one end connection signal detection unit, one end, and cooperation gear unit is so as to fulfill to cross
Shape test specimen 22 it is biaxial stretch-formed；Temperature loading unit is contacted with cruciform specimen 22 carries out conduction cooling, finally realizes biaxial stretch-formed mistake
Cryogenic refrigeration in journey.
The driving unit provides tensile loads power by stepper motor 1, and stepper motor 1 is fixed in supporting table 2 simultaneously
It is connect with shaft coupling 4, the both ends of precision ball screw 5 are connect respectively with shaft coupling 4, feed screw nut 6, feed screw nut 6 and movement
Plate 7 connects, and maneuvering board 7 exports accurate straight-line displacement；Supporting table 2 is solid by column I, II, III, IV 3-1,3-2,3-3,3-4
It is scheduled on pedestal 20.
The gear unit is led using four symmetrical screw I, II, III, IV 9-1,9-2,9-3,9-4 and movement
Into the transmission of action edge, specific assembly relation is by bar I, II, III, IV 10-1,10-2,10-3,10-4：Hold-down support I, II, III,
One end of IV 8-1,8-2,8-3,8-4 passes through one end of axle sleeve I, II, III, IV 26-1,26-2,26-3,26-4 and screw respectively
Ith, II, III, IV 9-1,9-2,9-3,9-4 connections, and pass through screw I, II, III, IV 27-1,27-2,27-3,27-4 clamping, it is real
The rotation of existing I, II, III, IV 9-1,9-2,9-3,9-4 connecting pin of screw；Screw I, II, III, IV 9-1,9-2,9-3,9-4's is another
One end is connected respectively with moving leader I, II, III, IV 10-1,10-2,10-3,10-4, realizes the transmission of movement；Moving leader I,
IIth, the other end of III, IV 10-1,10-2,10-3,10-4 respectively with tripod I, II, III, IV 11-1,11-2,11-3,11-4
Connection, and realized and rotated by screw；Tripod I, II, III, IV 11-1,11-2,11-3,11-4 respectively by angle steel I, II,
IIIth, IV 12-1,12-2,12-3,12-4, which is screwed, is connected to slider I, on II, III, IV 14-1,14-2,14-3,14-4, and
Be installed on the linear guide I, II, III, IV 13-1,13-2,13-3,13-4, passing power realize slider I, II, III, IV 14-1,
The movement of 14-2,14-3,14-4 on guide rail I, II, III, IV 13-1,13-2,13-3,13-4.
The detecting signal unit includes I, II, III, IV 18-1 of pulling force sensor, 18-2,18-3,18-4, line light
Displacement transducer I, II, III, IV and the light microscope for in-situ observation, I, II, III, IV 18- of pulling force sensor
1st, 18-2,18-3,18-4 both ends by screw thread be respectively fixedly connected with stretch I, II, III, IV 17-1 of connector, 17-2,17-3,
On 17-4 and clamp body I, II, III, IV 19-1,19-2,19-3,19-4；Stretch connector I, II, III, IV 17-1,17-2,17-
3rd, 17-4 one end is connect with angle steel I, II, III, IV 12-1,12-2,12-3,12-4, and pass through slider I, II, III, IV 14-1,
14-2,14-3,14-4 are installed on the linear guide I, II, III, IV 13-1,13-2,13-3,13-4, and pin is equipped with above the other end
Nail hole passes through pin I, II, III, IV 21-1,21-2,21-3,21-4 and pulling force sensor I, II, III, IV 18-1,18-2,18-
3rd, 18-4 connections ensure that the central axes of test pulling force, fixture and test block overlap；The linear grating displacement sensor is：
Main scale I, II, III, IV 16-1,16-2,16-3,16-4 are fixed on slider I, on II, III, IV 14-1,14-2,14-3,14-4, read
Several I, II, III, IV 15-1,15-2,15-3,15-4 are threadably secured and are connected on pedestal 20, by measure slider I, II,
IIIth, the moving displacement of IV 14-1,14-2,14-3,14-4 is so as to measure the deflection of cruciform specimen 22；Light microscope assembles
In the lower section of cruciform specimen 22.
The clamping unit is made of four couples of identical fixture I, II, III, IV 19-1,19-2,19-3,19-4,
Described fixture one end is connected by screw thread with pulling force sensor I, II, III, IV 18-1,18-2,18-3,18-4, and the other end is equipped with
Groove realizes the positioning of cruciform specimen 22；The groove of the fixture carries out chamfered, avoids stress concentration, the groove of fixture
To be arc-shaped, the radius of curvature of circular arc is consistent with the circular arc curvature radius of cruciform specimen for bottom, ensure cruciform specimen 22 with
Fixture I, II, III, IV 19-1,19-2,19-3,19-4 combine closely.
The temperature loading unit is freezed using semiconductor chilling plate 23, and the cold end of cooling piece 23 passes through thermal grease conduction and ten
The contact of font test specimen 22 carries out conduction cooling, and hot junction reduces hot junction by the installation fan on refrigeration platform 24 and the sheet mode that radiates
Temperature, the final cryogenic refrigeration realized in biaxial stretch process.
The beneficial effects of the utility model are：Simple in structure, easily operated, measuring accuracy is higher.Pass through a stepping
The synchronous loading of X, Y-axis are realized in motor driving.It can realize minimum 0 DEG C of low temperature loading environment.It can be with light microscope collection
Into using, Micro-fracture Mechanism of the material under practical service state is observed.In short, the utility model is material under cryogenic conditions
The research of fracture mechanism when bearing complicated applied force state provides effective ways, has very strong practicability.
Description of the drawings
Attached drawing described herein is used to provide a further understanding of the present invention, and forms the part of the application,
The illustrative example and its explanation of the utility model do not form the improper limit to the utility model for explaining the utility model
It is fixed.
Fig. 1 is the overall appearance structural representation of the utility model；
Fig. 2 is the main structure diagram of the utility model；
Fig. 3 is the overlooking the structure diagram of the utility model；
Fig. 4, Fig. 5 are the gear unit schematic diagram of the utility model；
Fig. 6 is the fixture installation way schematic diagram of the utility model；
Fig. 7 is the temperature loading unit principle schematic of the utility model；
Fig. 8 is the mechanical self-latching principle schematic of the utility model；
Fig. 9 is the biaxial stretch-formed principle schematic of the utility model.
In figure：1st, stepper motor；2nd, supporting table；3-1, column I；3-2, column II；3-3, column III；3-4, column IV；
4th, shaft coupling；5th, precision ball screw；6th, feed screw nut；7th, maneuvering board；8-1, hold-down support I；8-2, hold-down support II；8-3、
Hold-down support III；8-4, hold-down support IV；9-1, screw I；9-2, screw II；9-3, screw III；9-4, screw IV；10-1, shifting
Dynamic guide rod I；10-2, moving leader II；10-3, moving leader III；10-4, moving leader IV；11-1, tripod I；11-2, three
Corner bracket II；11-3, tripod III；11-4, tripod IV；12-1, angle steel I；12-2, angle steel II；12-3, angle steel III；12-4, angle
Steel IV；13-1, guide rail I；13-2, guide rail II；13-3, guide rail III；13-4, guide rail IV；14-1, slider I；14-2, sliding block II；
14-3, sliding block III；14-4, sliding block IV；15-1, reading head I；15-2, reading head II；15-3, reading head III；15-4, reading head
Ⅳ；16-1, main scale I；16-2, main scale II；16-3, main scale III；16-4, main scale IV；17-1, connector I is stretched；17-2, stretching
Connector II；17-3, connector III is stretched；17-4, connector IV is stretched；18-1, pulling force sensor I；18-2, pulling force sensor
Ⅱ；18-3, pulling force sensor III；18-4, pulling force sensor IV；19-1, fixture I；19-2, fixture II；19-3, fixture III；19-
4th, fixture IV；20th, pedestal；21-1, pin I；21-2, pin II；21-3, pin III；21-4, pin IV；22nd, cross tries
Part；23rd, cooling piece；24th, freeze platform；25-1, groove I；25-2, groove II；25-3, groove III；25-4, groove IV；26-1、
Axle sleeve I；26-2, shaft sleeve II；26-3, axle sleeve III；26-4, axle sleeve IV；27-1, screw I；27-2, screw II；27-3, screw III；
27-4, screw IV.
Specific embodiment
The detailed content and its specific embodiment of the utility model are further illustrated below in conjunction with the accompanying drawings.
Referring to shown in Fig. 1 to Fig. 9, the biaxial stretch-formed mechanics performance testing device of low-temperature in-site of the utility model is whole to tie
Structure uses vertical, described including driving unit, gear unit, detecting signal unit, clamping unit and temperature loading unit
Biaxial stress power is provided by stepper motor in driving unit；The gear unit is led by four centrosymmetric screws, movement
Bar, sliding block and the linear guide composition, the power for carrying out device transmit.The detecting signal unit includes pulling force sensor, straight
Linear light displacement transducer and the light microscope for in-situ observation, wherein, the sliding block being assemblied in the linear guide, which drives, to be drawn
Connector, pulling force sensor and clamp body movement are stretched, realizes the measurement of drawing force；Linear grating displacement sensor is slided by measuring
Block moving displacement measures the deflection of test specimen；Light microscope is assemblied in below cruciform specimen, to alternating temperature biaxial stretch process
Carry out in-situ observation.The clamp body up and down that the clamping unit is connected to by four on pulling force sensor forms, to cross
Test specimen carries out clamping.Wherein, lower clamp body one end is connected by screw thread with pulling force sensor, and the other end is equipped with groove, realizes ten
The positioning of font test specimen；Upper fixture body is raised type structure, realizes the clamping of test specimen, avoid occurring in drawing process test specimen and
The mutual sliding phenomenon of clamp body.Temperature loading unit using semiconductor chilling plate freeze, cooling piece cold end by thermal grease conduction with
Cruciform specimen contact carries out conduction cooling, and refrigeration platform coordinates hot-side heat dissipation equipped with cooling system, so as to fulfill biaxial stretch process
In cryogenic refrigeration.
Referring to shown in Fig. 1 to Fig. 3, driving unit described in the utility model provides tensile loads power by stepper motor 1,
Stepper motor 1 is fixed in supporting table 2 and is connect with shaft coupling 4, the both ends of precision ball screw 5 respectively with shaft coupling 4, leading screw
Nut 6 connects, and feed screw nut 6 is connect with maneuvering board 7, and maneuvering board 7 exports accurate straight-line displacement；Supporting table 2 by column I,
IIth, III, IV 3-1,3-2,3-3,3-4 is fixed on pedestal 20.
Referring to shown in Fig. 4 and Fig. 5, gear unit described in the utility model using four symmetrical screws I, II,
IIIth, IV 9-1,9-2,9-3,9-4 and moving leader I, II, III, IV 10-1,10-2,10-3,10-4 have into the transmission of action edge
Body assembly relation is：One end of hold-down support I, II, III, IV 8-1,8-2,8-3,8-4 pass through I, II, III, IV 26- of axle sleeve respectively
1st, one end I, II, III, IV 9-1,9-2,9-3,9-4 of 26-2,26-3,26-4 and screw are connected, and pass through screw I, II, III,
IV 27-1,27-2,27-3,27-4 is clamped, and realizes the rotation of I, II, III, IV 9-1,9-2,9-3,9-4 connecting pin of screw；Screw
Ith, the other end of II, III, IV 9-1,9-2,9-3,9-4 respectively with moving leader I, II, III, IV 10-1,10-2,10-3,10-4
It is connected, realizes the transmission of movement；The other end of moving leader I, II, III, IV 10-1,10-2,10-3,10-4 respectively with tripod
Ith, II, III, IV 11-1,11-2,11-3,11-4 connections, and realized and rotated by screw；Tripod I, II, III, IV 11-1,11-
2nd, 11-3,11-4 be screwed respectively by angle steel I, II, III, IV 12-1,12-2,12-3,12-4 be connected to slider I, II,
IIIth, it on IV 14-1,14-2,14-3,14-4, and is installed on the linear guide I, II, III, IV 13-1,13-2,13-3,13-4, passes
Graduating power realizes slider I, II, III, IV 14-1,14-2,14-3,14-4 in guide rail I, II, III, IV 13-1,13-2,13-3,13-
Movement on 4.
The detecting signal unit includes I, II, III, IV 18-1 of pulling force sensor, 18-2,18-3,18-4, line light
Displacement transducer and the light microscope for in-situ observation, described pulling force sensor I, II, III, IV 18-1,18-2,18-
3rd, 18-4 both ends are respectively fixedly connected with by screw thread and are stretching connector I, II, III, IV 17-1,17-2,17-3,17-4 and fixture
On body I, II, III, IV 19-1,19-2,19-3,19-4；Stretch I, II, III, IV 17-1,17-2,17-3,17-4 one end of connector
Connect with angle steel I, II, III, IV 12-1,12-2,12-3,12-4, and pass through slider I, II, III, IV 14-1,14-2,14-3,
14-4 is installed on the linear guide I, II, III, IV 13-1,13-2,13-3,13-4, and pin hole is equipped with above the other end, passes through pin
It follows closely I, II, III, IV 21-1,21-2,21-3,21-4 and pulling force sensor I, II, III, IV 18-1,18-2,18-3,18-4 is connected,
Ensure that the central axes of test pulling force, fixture and test block overlap；The linear grating displacement sensor is：Main scale I, II, III,
IV 16-1,16-2,16-3,16-4 is fixed on slider I, on II, III, IV 14-1,14-2,14-3,14-4, reading head I, II, III,
IV 15-1,15-2,15-3,15-4, which is threadably secured, to be connected on pedestal 20, by measure slider I, II, III, IV 14-1,
The moving displacement of 14-2,14-3,14-4 are so as to measure the deflection of cruciform specimen 22；Light microscope is assemblied in cross examination
The lower section of part 22.
Shown in Figure 6, clamping unit described in the utility model is by four couples of identical I, II, III, IV 19- of fixture
1st, 19-2,19-3,19-4 are formed, and described fixture one end passes through screw thread and pulling force sensor I, II, III, IV 18-1,18-2,18-
3rd, 18-4 is connected, and the other end is equipped with the positioning that groove realizes cruciform specimen 22；The groove of the fixture carries out chamfered, keeps away
Exempt from stress concentration, the bottom portion of groove of fixture is arc-shaped, the radius of curvature of circular arc and the circular arc curvature radius of cruciform specimen 22
Unanimously, ensure that cruciform specimen 22 is combined closely with fixture I, II, III, IV 19-1,19-2,19-3,19-4, avoid the upper of fixture
Clamp body locking during test specimen occur play and influence test specimen to neutrality；The upper fixture body is raised type structure, is passed through
Cruciform specimen 22 is pressed on the lower clamp body of fixture by threaded connection, is realized the clamping of test specimen, is avoided occurring in drawing process
The mutual sliding phenomenon of test specimen and fixture.
Shown in Figure 7, temperature loading unit described in the utility model is freezed using semiconductor chilling plate 23.In principle
On, semiconductor chilling plate is the tool that a heat is transmitted.When one piece of N-type semiconductor material and one piece of p-type semiconductor material are coupled
Into thermocouple pair in have electric current by when, heat transfer will be generated between both ends, heat will be transferred to another from one end
End forms hot and cold side so as to generate the temperature difference, and the heat between two pole plates also can pass through air and semi-conducting material itself carries out
Reverse heat is transmitted.When hot and cold side reaches certain temperature difference, and the amount that both heat are transmitted is equal, an equalization point will be reached, just
Reverse heat, which is transmitted, cancels out each other.The temperature of hot and cold side would not continue to change at this time.It is low at 0 DEG C ~ 30 DEG C in order to realize
The purpose tested under temperature, the present apparatus are taken the cold end of cooling piece 23 to be contacted by thermal grease conduction with cruciform specimen 22 and are led
Cold, hot junction reduces the temperature in hot junction by the installation fan on refrigeration platform 24 and the sheet mode that radiates, final to realize that twin shaft is drawn
Cryogenic refrigeration during stretching.
Shown in Figure 9, the utility model is simple in structure, easily operated, and measuring accuracy is higher.Pass through a stepper motor
（1）The synchronous loading of X, Y-axis are realized in driving, the synchro-draw at four stretching ends are ensure that, so the center of cruciform specimen 22
Region is consistent substantially in the horizontal direction, and so as to be more conducive to integrate carry out in-situ observation with light microscope, observation material exists
Micro-fracture Mechanism under practical service state has important meaning for the research for probing into material mechanical performance under power thermal coupling
Justice.
Referring to shown in Fig. 1 to Fig. 9, the biaxial stretch-formed mechanics performance testing device of low-temperature in-site of the utility model is being tested
Before device installation, it is necessary first to which pulling force sensor I, II, III, IV 18-1,18-2,18-3,18-4 and linear grating displacement are passed
Sensor is demarcated and is calibrated, then carries out the installation and debugging of instrument.After each experiment terminates, need to return to clamp body
It is in situ, facilitate clamping of the next time to experiment test specimen.Device uses vertical structure, and instrument whole height is relatively low, meets specified conditions
Lower low-temperature in-site biaxial tension-compression strength requirement.Stepping motor is connected by shaft coupling with precision ball screw in device, is passed through
The precise linear movement for being changed into maneuvering board of motor is realized the synchronization twin shaft of X-axis, Y-axis by screw nut driven
Tensile loads.Temperature load-on module is freezed using semiconductor chilling plate, and range of temperature is 0 DEG C ~ 30 DEG C, realizes temperature match curing conditions
The lower biaxial stretch-formed mechanics performance test of material.Coordinate light microscope, to Micromechanics behavior and the damage of test specimen in test process
Hinder mechanism and carry out dynamic monitoring in situ.Advantage is：It can be with the true service state of simulation material；Test device is compact-sized, accounts for
Ground area is small, convenient for integrated and control, has important meaning to low temperature environment complex stress condition material mechanical performance testing research
Justice.
The foregoing is merely the preferred embodiments of the utility model, are not intended to limit the utility model, for ability
For the technical staff in domain, various modifications and changes may be made to the present invention.All any modifications made to the utility model,
Equivalent replacement, improvement etc., should be included within the scope of protection of this utility model.
Claims (6)
1. a kind of biaxial stretch-formed mechanics performance testing device of low-temperature in-site, it is characterised in that：Overall structure uses vertical, packet
Driving unit, gear unit, detecting signal unit, clamping unit and temperature loading unit are included, wherein driving unit passes through stepping
Motor（1）Tensile loads power is provided；Gear unit uses screw（9）And moving leader（10）The lower X-axis of realization single motor driving,
The Bidirectional power of Y-axis transmits；Detecting signal unit is connected with gear unit, using pulling force sensor（18）With linear grating displacement
Sensor carries out the measurement of power and displacement, while is equipped with light microscope and the mechanical behavior and damage mechanisms of sample are carried out
Dynamic in-situ is observed；Clamping unit one end connection signal detection unit, one end is to cruciform specimen（22）It is fixed, cooperation passes
Moving cell is so as to fulfill to cruciform specimen（22）It is biaxial stretch-formed；Temperature loading unit and cruciform specimen（22）Contact carries out
Conduction cooling, the final cryogenic refrigeration realized in biaxial stretch process.
2. the biaxial stretch-formed mechanics performance testing device of low-temperature in-site according to claim 1, it is characterised in that：The drive
Moving cell is by stepper motor（1）Tensile loads power, stepper motor are provided（1）It is fixed on supporting table（2）Upper and and shaft coupling（4）
Connection, precision ball screw（5）Both ends respectively with shaft coupling（4）, feed screw nut（6）Connection, feed screw nut（6）With maneuvering board
（7）Connection, maneuvering board（7）Export accurate straight-line displacement；Supporting table（2）Pass through column I, II, III, IV（3-1、3-2、3-3、
3-4）It is fixed on pedestal（20）On.
3. the biaxial stretch-formed mechanics performance testing device of low-temperature in-site according to claim 1, it is characterised in that：The biography
Moving cell uses four symmetrical screws I, II, III, IV（9-1、9-2、9-3、9-4）And moving leader I, II, III, IV
（10-1、10-2、10-3、10-4）Into the transmission of action edge, specific assembly relation is：Hold-down support I, II, III, IV（8-1、8-
2、8-3、8-4）One end pass through axle sleeve I, II, III, IV respectively（26-1、26-2、26-3、26-4）One end I with screw, II,
Ⅲ、Ⅳ（9-1、9-2、9-3、9-4）Connection, and pass through screw I, II, III, IV（27-1、27-2、27-3、27-4）It clamps, realizes
Screw I, II, III, IV（9-1、9-2、9-3、9-4）The rotation of connecting pin；Screw I, II, III, IV（9-1、9-2、9-3、9-4）'s
The other end respectively with moving leader I, II, III, IV（10-1、10-2、10-3、10-4）It is connected, realizes the transmission of movement；Movement is led
Bar I, II, III, IV（10-1、10-2、10-3、10-4）The other end respectively with tripod I, II, III, IV（11-1、11-2、11-
3、11-4）Connection, and realized and rotated by screw；Tripod I, II, III, IV（11-1、11-2、11-3、11-4）Pass through respectively
Angle steel I, II, III, IV（12-1、12-2、12-3、12-4）It is screwed and is connected to slider I, II, III, IV（14-1、14-2、14-
3、14-4）On, and it is installed to the linear guide I, II, III, IV（13-1、13-2、13-3、13-4）On, passing power realizes sliding block
Ⅰ、Ⅱ、Ⅲ、Ⅳ（14-1、14-2、14-3、14-4）In guide rail I, II, III, IV（13-1、13-2、13-3、13-4）On movement.
4. the biaxial stretch-formed mechanics performance testing device of low-temperature in-site according to claim 1, it is characterised in that：The letter
Number detection unit includes pulling force sensor I, II, III, IV（18-1、18-2、18-3、18-4）, linear grating displacement sensor and
For the light microscope of in-situ observation, the pulling force sensor I, II, III, IV（18-1、18-2、18-3、18-4）Both ends lead to
Screw thread is crossed to be respectively fixedly connected in stretching connector I, II, III, IV（17-1、17-2、17-3、17-4）With clamp body I, II, III,
Ⅳ（19-1、19-2、19-3、19-4）On；Stretch connector I, II, III, IV（17-1、17-2、17-3、17-4）One end and angle steel
Ⅰ、Ⅱ、Ⅲ、Ⅳ（12-1、12-2、12-3、12-4）Connection, and pass through slider I, II, III, IV（14-1、14-2、14-3、14-4）
It is installed to the linear guide I, II, III, IV（13-1、13-2、13-3、13-4）On, pin hole is equipped with above the other end, passes through pin
Ⅰ、Ⅱ、Ⅲ、Ⅳ（21-1、21-2、21-3、21-4）With pulling force sensor I, II, III, IV（18-1、18-2、18-3、18-4）Even
It connects, ensures that the central axes of test pulling force, fixture and test block overlap；The linear grating displacement sensor is：Main scale I, II,
Ⅲ、Ⅳ（16-1、16-2、16-3、16-4）It is fixed on slider I, II, III, IV（14-1、14-2、14-3、14-4）On, reading head
Ⅰ、Ⅱ、Ⅲ、Ⅳ（15-1、15-2、15-3、15-4）It is threadably secured and is connected to pedestal（20）On, by measure slider I, II,
Ⅲ、Ⅳ（14-1、14-2、14-3、14-4）Moving displacement so as to measure cruciform specimen（22）Deflection；Light microscope
It is assemblied in cruciform specimen（22）Lower section.
5. the biaxial stretch-formed mechanics performance testing device of low-temperature in-site according to claim 1, it is characterised in that：The folder
Unit is held by four pairs of identical fixtures I, II, III, IV（19-1、19-2、19-3、19-4）Composition, described fixture one end leads to
Cross screw thread and pulling force sensor I, II, III, IV（18-1、18-2、18-3、18-4）It is connected, the other end is equipped with groove and realizes cross
Shape test specimen（22）Positioning；The groove of the fixture carries out chamfered, avoids stress concentration, the bottom portion of groove of fixture is circular arc
Shape, the radius of curvature of circular arc is consistent with the circular arc curvature radius of cruciform specimen, ensures cruciform specimen（22）With fixture I, II,
Ⅲ、Ⅳ（19-1、19-2、19-3、19-4）It combines closely.
6. the biaxial stretch-formed mechanics performance testing device of low-temperature in-site according to claim 1, it is characterised in that：The temperature
It spends loading unit and uses semiconductor chilling plate（23）Refrigeration, cooling piece（23）Cold end pass through thermal grease conduction and cruciform specimen（22）
Contact carries out conduction cooling, and hot junction passes through in refrigeration platform（24）Upper installation fan and the sheet mode that radiates reduce the temperature in hot junction, most
The cryogenic refrigeration in biaxial stretch process is realized eventually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721686125.XU CN207528566U (en) | 2017-12-07 | 2017-12-07 | The biaxial stretch-formed mechanics performance testing device of low-temperature in-site |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721686125.XU CN207528566U (en) | 2017-12-07 | 2017-12-07 | The biaxial stretch-formed mechanics performance testing device of low-temperature in-site |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207528566U true CN207528566U (en) | 2018-06-22 |
Family
ID=62578102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721686125.XU Withdrawn - After Issue CN207528566U (en) | 2017-12-07 | 2017-12-07 | The biaxial stretch-formed mechanics performance testing device of low-temperature in-site |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207528566U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108072572A (en) * | 2017-12-07 | 2018-05-25 | 吉林大学 | The biaxial stretch-formed mechanics performance testing device of low-temperature in-site |
| CN109297814A (en) * | 2018-11-13 | 2019-02-01 | 重庆大学 | A kind of test method measuring angle steel test specimen tensile mechanical properties |
| CN110595658A (en) * | 2019-09-27 | 2019-12-20 | 浙江工业大学 | Residual stress introducing device capable of keeping central position motionless |
| CN112964544A (en) * | 2021-03-11 | 2021-06-15 | 天津大学 | In-situ double-shaft mechanical test device used in lead-bismuth environment |
-
2017
- 2017-12-07 CN CN201721686125.XU patent/CN207528566U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108072572A (en) * | 2017-12-07 | 2018-05-25 | 吉林大学 | The biaxial stretch-formed mechanics performance testing device of low-temperature in-site |
| CN108072572B (en) * | 2017-12-07 | 2024-02-20 | 吉林大学 | Low-temperature in-situ biaxial stretching mechanical property testing device |
| CN109297814A (en) * | 2018-11-13 | 2019-02-01 | 重庆大学 | A kind of test method measuring angle steel test specimen tensile mechanical properties |
| CN110595658A (en) * | 2019-09-27 | 2019-12-20 | 浙江工业大学 | Residual stress introducing device capable of keeping central position motionless |
| CN112964544A (en) * | 2021-03-11 | 2021-06-15 | 天津大学 | In-situ double-shaft mechanical test device used in lead-bismuth environment |
| CN112964544B (en) * | 2021-03-11 | 2023-02-28 | 天津大学 | In-situ double-shaft mechanical test device used in lead-bismuth environment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108072572B (en) | Low-temperature in-situ biaxial stretching mechanical property testing device | |
| CN207528566U (en) | The biaxial stretch-formed mechanics performance testing device of low-temperature in-site | |
| CN106706440B (en) | High-temperature biaxial synchronous stretching mechanical property testing instrument and testing method | |
| CN107607390B (en) | Variable-temperature tension-torsion composite load material mechanical property in-situ test device and method | |
| CN105842080B (en) | Combined load Material mechanics test system under a kind of induction heating mode | |
| CN106371043B (en) | Superconducting tape test device | |
| CN203337479U (en) | Double-shaft double-way stretching/compressing in-situ testing system with coupled thermo-mechanics loading | |
| CN107941624B (en) | High-temperature high-frequency material mechanical property in-situ testing device | |
| CN108398258B (en) | Piano key switch life-span testing arrangement | |
| CN103292969B (en) | Manual spring tension and compression testing machine | |
| CN105675396A (en) | Multifunctional uniaxial tensile test device for microstructure in-situ online observation | |
| CN105973717A (en) | Comprehensive bituminous-mixture low-temperature-performance detection device | |
| CN206362642U (en) | High temperature Dual-shaft synchronous stretching mechanical property tester device | |
| CN103234834B (en) | Loading device used in road seam filling material low-temperature performance test | |
| CN203719597U (en) | Door hinge gap and angle measurement detecting tool | |
| CN106383059A (en) | In-situ torsion testing platform and observation system thereof | |
| CN113720772B (en) | Temperature control device suitable for quantitative prepreg viscosity test and use method | |
| CN103645048A (en) | Performance testing device for hollow ball lead screw pair | |
| CN203356078U (en) | Automatic sorting machine for strain meters | |
| CN202693429U (en) | Material mechanical property testing platform for small sample in stretching and bending combined loading mode | |
| CN219871687U (en) | Motor is to dragging platform | |
| CN203422186U (en) | Bolt torque detection apparatus | |
| CN202693415U (en) | Mechanics testing device for biaxial stretching/compressing-mode scanning electron microscope | |
| CN202404182U (en) | Thermoelectric electromagnetic valve on-line detection platform | |
| CN206161448U (en) | Test platform is twistd reverse to normal position and observation system thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180622 Effective date of abandoning: 20240220 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20180622 Effective date of abandoning: 20240220 |