CN206945459U - Transmission-type fatigue tester in a kind of face of large-sized double-shaft original position - Google Patents
Transmission-type fatigue tester in a kind of face of large-sized double-shaft original position Download PDFInfo
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- CN206945459U CN206945459U CN201720758664.3U CN201720758664U CN206945459U CN 206945459 U CN206945459 U CN 206945459U CN 201720758664 U CN201720758664 U CN 201720758664U CN 206945459 U CN206945459 U CN 206945459U
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Abstract
The utility model belongs to material mechanical performance testing field, disclose transmission-type fatigue tester in a kind of face of large-sized double-shaft original position, including structure identical X-axis module and Y-axis module, formed by motor, shaft coupling, the first synchronous pulley, timing belt, the second synchronous pulley, left-right rotary ball-screw, crossbeam, fixture, load transducer, grating scale, grating ruler reading head；Each part is arranged in the space that the crossbeam of external Y-axis module (or X-axis module) and left-right rotary ball-screw are surrounded in built-in X-axis module (or described Y-axis module)；External Y-axis module (or X-axis module) is connected between its crossbeam with fixture using portal trestle, so that the left-right rotary ball-screw of built-in X-axis module (or Y-axis module) passes through from portal trestle.The utility model precision is high, stroke is big, high safety, load range are big, can coordinate microcosmic observation instrument, realize to the material in site measurement that microstructure changes under the effect of single, double axle load.
Description
Technical field
The utility model belongs to material mechanical performance testing field, is to be related to a kind of fatigue tester specifically.
Background technology
The research for the mechanics of materials focused mostly in uniaxial loading state in the past, but due in practical implementation,
Material is widely under composite stress state, such as：Space shuttle housing is acted on by the pressure of complexity, is high-strength under sail
Steel is during by roll forming by combined stress etc..In order to accurate description material mechanical property, it is necessary to carry out twin shaft
Twin shaft mechanical test in a series of faces such as stretching, Biaxial Compression, biaxial tension test fatigue.But big load in the market,
It is also fewer that biaxial loadings device in the face in situ of tension and compression CYCLIC LOADING can be carried out.
At the same time, material microcosmic observation means are very abundant, including various light microscopes, scanning electron microscopy
Mirror, AFM, synchrotron radiation light source, neutron diffractometer etc., higher want is proposed for material in situ mechanical test
Ask.Traditional in-situ test instrument uses the mechanical structure of top-bottom layout more, causes sample lower surface not observe, X-ray or neutron
Sample progress in situ detection can not be penetrated etc. test mode.
Therefore need to develop a kind of transmission-type in-situ mechanical loading device, to coordinate synchrotron radiation light source, neutron diffraction
The needs such as instrument penetrate the large-scale Image-forming instrument of observation.
Utility model content
The purpose of this utility model is to provide the large-scale of a kind of measure material biaxial tension, compression or tension and compression stress alternation
Transmission-type fatigue tester in the face of twin shaft original position, the testing machine has fast response, precision height, error is small, stroke is big, security
By force, can loaded load scope it is big, noise is small, is easy to the features such as observation, while synchrotron radiation light source, neutron diffraction can be coordinated
The needs such as instrument penetrate the microcosmic observation instrument of observation, realize to material in uniaxial loading or face under Biaxial stress state it is in situ
The Mechanics Performance Testings such as stretching, compression, creep, relaxation, low-cycle fatigue, Crack Extension.
In order to solve the above-mentioned technical problem, the utility model is achieved by following technical scheme：
Transmission-type fatigue tester in a kind of face of large-sized double-shaft original position, including X-axis module and Y-axis module, X-axis module and Y
The structure of axle module is identical, by motor, shaft coupling, the first synchronous pulley, timing belt, the second synchronous pulley, left-right rotary ball
Leading screw, crossbeam, fixture, load transducer, grating scale, grating ruler reading head composition；
The motor connects first synchronous pulley by the shaft coupling, and first synchronous pulley is with being arranged at it
Two second synchronous pulleys of both sides are respectively by the synchronous band connection；Two second synchronous pulleys are separately mounted to
On two left-right rotary ball-screws, the left-right rotary ball-screw includes symmetrically arranged left hand thread and right-handed thread,
Two left-right rotary ball-screws are parallel to each other and set with rotation direction screw thread homonymy；Between two left-right rotary ball-screws
Two crossbeams are connected with, two crossbeams being parallel to each other are separately mounted to the left-handed spiral shell of the left-right rotary ball-screw
At line and at right-handed thread；Two symmetrically arranged fixtures are separately installed with the opposite face of two crossbeams, described in two
It can drive two crossbeams symmetrical during the rotation of left-right rotary ball-screw and synchronously carry out move toward one another or move backwards, from
And two fixture spacing are made to reduce or increase；The load transducer is connected with the fixture；The grating scale and institute
State crossbeam to be connected, and measured by the grating ruler reading head；
Described in the X-axis module and Y-axis module using built in one, another it is external by the way of become one；It is built-in
First synchronous pulley of the X-axis module (or described Y-axis module), the timing belt, second synchronous pulley, institute
State left-right rotary ball-screw, the crossbeam, the fixture, the load transducer, the grating scale, the grating ruler reading head
It is arranged in the crossbeam of the external Y-axis module (or described X-axis module) and the left-right rotary ball-screw is surrounded
In space；The external Y-axis module (or described X-axis module) uses portal trestle between its described crossbeam and the fixture
It is connected, the portal trestle both sides insertion, so that the left-right rotary of the built-in X-axis module (or described Y-axis module)
Ball-screw passes through among the portal trestle.
The motor matches somebody with somebody the planet-gear speed reducing motor for setting low back gap.
The gearratio of first synchronous pulley and second synchronous pulley is (1-3):1.
The left-right rotary ball-screw, the crossbeam, the load transducer of the X-axis module and the Y-axis module
It is placed in sample in same level.
The bottom plate of fatigue tester is provided with twice reinforcement, the reinforcement and the external Y-axis module (or it is described
X-axis module) the left-right rotary ball-screw axis it is parallel.
Transmission window is offered on the bottom plate and cover plate of fatigue tester, the transmission window is right against the fixture and sample
Position.
Fatigue tester is provided with contact-type heating device below sample.
Fatigue tester installs lifting water bath below sample.
The beneficial effects of the utility model are：
(1) the utility model can realize that left-right rotary ball-screw, crossbeam, sample, load transducer are placed in same level
In face, influence of the face Moments to sample and load transducer is eliminated, effectively improves test accuracy and complete machine rigidity, supporting difference
The motor and drive mechanism of power, can realize the loading of Arbitrary Loads in theory, so as to be carried for big load, big stroke Biaxial stress
For feasibility, trial stretch have greatly expanded.
(2) twin shaft mechanical loading unit in other faces using worm gear structure is different from, the utility model has low
The characteristics of returning gap, twin shaft circulation or circulation, fatigue loading can be carried out, and other same categories of device are larger due to returning gap, generally only
It the one direction loading such as can be stretched, be compressed.
(3) the utility model can also realize twin shaft ratio, non-proportion loading test, application with single shaft independent test
The testing fatigue Testing Software of independent development, the self-defined setting to control mode, waveform, experimental condition etc. can be achieved, realize
Most metals, nonmetallic Mechanics Performance Testing.
(4) the utility model plays transmission and guide effect using left-right rotary ball screw, can realize symmetrical add simultaneously
Carry, it is ensured that test specimen center position during experiment is constant, compared with the testing machine of single-ended start, it is easy to accomplish in situ online
Observation, and then ensure whole dynamic monitoring.
(5) the utility model is due to realizing transmittance structure, can coordinate various light microscopes, SEM,
The microscopic observation such as AFM, synchrotron radiation light source, neutron diffractometer instrument uses, and can effectively monitor material generation
Microdeformation, damage are until the process of failure damage；And convenient installation contact-type heating device, online corrosion water bath etc. are more
Kind annex, more, more rich testing program is provided for material mechanical performance test.
Brief description of the drawings
Fig. 1 is the structural representation of transmission-type fatigue tester in the face of large-sized double-shaft original position provided by the utility model；
Fig. 2 is the attachment structure schematic diagram of portal trestle.
In above-mentioned figure：1st, motor；2nd, shaft coupling；3rd, the first synchronous pulley；4th, timing belt；5th, the second synchronous pulley；6th, it is horizontal
Beam；7th, left-right rotary ball-screw；8th, grating scale；9th, grating ruler reading head；10th, load transducer；11st, fixture；12nd, circuit board；
13rd, portal trestle.
Embodiment
For content, feature and effect of the present utility model can be further appreciated that, following examples are hereby enumerated, and coordinate accompanying drawing
Describe in detail as follows：
As shown in figure 1, transmission-type fatigue tester in a kind of face of large-sized double-shaft original position is present embodiments provided, including X-axis
Module and Y-axis module, X-axis module can be used to be built in the form of Y-axis module, also X-axis module can be built in using Y-axis module
Form.X-axis module is identical with the structure of Y-axis module, by motor 1, shaft coupling 2, the first synchronous pulley 3, timing belt 4, second
Synchronous pulley 5, crossbeam 6, left-right rotary ball-screw 7, grating scale 8, grating ruler reading head 9, load transducer 10,11 groups of fixture
Into.
Motor 1 matches somebody with somebody the planet-gear speed reducing motor for setting low back gap, and the first synchronous pulley 3 is connected by shaft coupling 2.First is same
Step belt wheel 3 both sides are equidistant to be provided with two the second synchronous pulleys 5, the first synchronous pulley 3 and two the second synchronous pulleys 5 it
Between connect timing belt 4 respectively.Motor 1 drives the first synchronous pulley 3 to rotate by shaft coupling 2, and the first synchronous pulley 3 passes through synchronization
The gearratio of two synchronous axial systems of the second synchronous pulley 5 of drive of band 4, the first synchronous pulley 3 and the second synchronous pulley 5 is 2:1, mesh
Be the further influence for reducing motor 1 and returning gap.Wherein, timing belt 4 uses the big pretightning force tensioner of expansion tightening wheel, effectively reduces coming and going
Gap is returned during start.
Two the second synchronous pulleys 5 are separately mounted on two left-right rotary ball-screws 7, and left-right rotary ball-screw 7 is with it
Optical axis section passes through the axis hole of the second synchronous pulley 5 and is fixedly connected with the second synchronous pulley 5, while left-right rotary ball-screw 7
Both ends are fixed by bearing.Left-right rotary ball-screw 7 includes symmetrically arranged left hand thread and right-handed thread, two or so rotary rolls
Ballscrew 7 is parallel to each other and placed in the same way, i.e., is set with rotation direction screw thread homonymy.Thus, two left-right rotary ball wires
Thick stick 7 realizes completely the same rotary motion under the gearing of two the second synchronous pulleys 5.
It is connected with two crossbeams being parallel to each other 6 between two left-right rotary ball-screws 7, two crossbeams 6 are and left-right rotary
Ball-screw 7 is vertical.One crossbeam 6 is arranged at the left hand thread of left-right rotary ball-screw 7, another crossbeam 6 is arranged on a left side
At the right-handed thread of dextrorotation ball-screw 7.Crossbeam 6 is provided at both ends with through hole and the ball nut by being installed on the through hole is set with
Two ball guide screw nats are formed on left-right rotary ball-screw 7.It can be driven during the rotation of two left-right rotary ball-screws 7
Two crossbeams 6 move axially along left-right rotary ball-screw 7.By two crossbeams 6 are arranged on left-right rotary ball-screw 7
Thread rotary orientation is different, therefore two crossbeams 6 are under the rotary motion state of left-right rotary ball-screw 7, it will enters symmetrically and synchronously
Row move toward one another or backwards to moving, loads for fatigue tester stretching in situ symmetrical, compression twocouese and provides condition.
The centre position of two crossbeams 6 is separately installed with two fixtures 11, and two fixtures 11 respectively symmetrically are arranged on two
On the opposite face of individual crossbeam 6.Because crossbeam 6 is connected to left-right rotary ball-screw 7, further according to the setting of two fixtures 11,
It can ensure that the axis of clamped specimen surface and two left-right rotary ball-screws 7 is in same level, to eliminate sample
Institute's bending moment, improve the precision of experiment.
In the present embodiment, it is synchronous by shaft coupling 2, the first synchronous pulley 3, timing belt 4, second when motor 1 rotates forward
The transmission of belt wheel 5, left-right rotary ball-screw 7, two crossbeams 6 are symmetrical and synchronously backwards to mobile, distance between two fixtures 11
Become big, sample can be clamped and carry out tension test；When motor 1 inverts, by shaft coupling 2, the first synchronous pulley 3, timing belt 4,
The transmission of second synchronous pulley 5, left-right rotary ball-screw 7, two crossbeams 6 are symmetrical and synchronously move towards, two fixtures 11
Between distance diminish, sample can be clamped and be compressed experiment.
Load transducer 10 is connected with fixture 11, for clamping axial force suffered by sample during testing experiment.Grating
Chi 8 is connected with crossbeam 6, the distance moved by the measurement experiment process of grating ruler reading head 9 middle cross beam 6.Fatigue tester
Inside it is additionally provided with circuit board 12, whole device is by circuit board 12 by externally fed, and the load of feedback, displacement are via circuit board 12
Feed back in computer.
Transmission-type fatigue tester in the face of large-sized double-shaft original position of the present utility model, including X-axis module and Y-axis module, are adopted
With a module (X-axis module or Y-axis module) is built-in, mode of another module external (Y-axis module or X-axis module) is by two
Module becomes one.Built-in X-axis module (or Y-axis module) uses timing belt 4, crossbeam 6, the left-right rotary ball of reduced size
Leading screw 7, fixture 11, external Y-axis module (or X-axis module) use timing belt 4, crossbeam 6, the left-right rotary ball wire of large-size
Thick stick 7, fixture 11.The first synchronous pulley 3, timing belt 4, the second synchronous pulley 5, the crossbeam of built-in X-axis module (or Y-axis module)
6th, left-right rotary ball-screw 7, grating scale 8, grating ruler reading head 9, load transducer 10, fixture 11 are arranged in external Y-axis mould
In the space that the crossbeam 6 and left-right rotary ball-screw 7 of block (or X-axis module) are surrounded.
External Y-axis module (or X-axis module) is connected between crossbeam 6 and fixture 11 using portal trestle 13, the door
The both ends of shape support 13 are fixed with crossbeam 6 and fixture 11 respectively, the both sides of portal trestle 13 insertion, can make built-in X-axis module (or
Y-axis module) left-right rotary ball-screw 7 passed through among portal trestle 13；The load sensing of X-axis module and Y-axis module simultaneously
Device 10 is preposition to further reduce moment of flexure on fixture 11, adds load loading accuracy.This great-leap-forward overpass structure is realized
The left-right rotary ball-screw 7 of X-axis module and Y-axis module, crossbeam 6, the axis of load transducer 10 and sample are placed in same water
In plane, influence of the face Moments to sample and load transducer 10 is eliminated, effectively improves machine stiffness.In addition, on bottom plate
Brasses is used provided with the twice reinforcement parallel with external left-right rotary ball-screw 7, and to external left-right rotary ball-screw 7
Supporting construction, the situation for preventing from external left-right rotary ball-screw 7 long deforming in big loading.
The use of fatigue tester is parallel to each other spaced two groups of left-right rotary ball-screws 7, avoids traditional cantilever
Girder construction is blocked, while opens up transmission window in the cover plate and bottom plate of casing, and the transmission window is right against fixture 11 and sample
Position, the instruments such as neutron diffraction, X ray, synchrotron radiation light source, AFM are facilitated to be carried out by transmission window saturating
Penetrate observation.The spaced two groups of left-right rotary ball-screws 7 that are parallel to each other also leave enough plane spaces around sample and added
Additional component required for dress test, such as contact-type heating device is installed in sample lower surface, while sample upper table is not influenceed
The in-situ observation in face；Lifting water bath can also be installed, realize online corrosion function.
To sum up shown, transmission-type fatigue tester can realize add in-place in the face of large-sized double-shaft original position of the present utility model
Load, big load, transmittance structure, the technical characterstic of fatigue function：
(1) implementation of loading in situ：The utility model is divided into two big portion of X-axis module and Y-axis module in structure
Point, X-axis module and Y-axis module are played dual parts of being driven and are oriented to using left-right rotary ball-screw 7, can save installation
Guide rail slide block is being oriented to.When motor 1 rotates, two crossbeams 6 can drive fixture 11 simultaneously it is close or open identical away from
From, it is achieved thereby that synchronous asymmetrical load, so ensures that sample testing center relative device when drawing, pressure loading is motionless,
Realize Biaxial stress in face.
(2) implementation of big load：The utility model uses left-right rotary ball-screw 7, and loading force is concentrated as internal force
In left-right rotary ball-screw 7, the support of left-right rotary ball-screw 7 is not subject to load.External Y-axis module (or X-axis mould
Block) it is connected between crossbeam 6 and fixture 11 using portal trestle 13, the left and right rotary roll of built-in X-axis module (or Y-axis module)
Ballscrew 7 passes through among portal trestle 13, and this great-leap-forward overpass structure realizes the left and right rotary roll of X-axis module and Y-axis module
Ballscrew 7, crossbeam 6, load transducer 10 and sample are placed in same level, eliminate face Moments and sample and load are passed
The influence of sensor 10, effectively improves machine stiffness.Using the motor 1 and drive mechanism of the supporting different capacity of this programme, in theory
The loading of Arbitrary Loads can be achieved, have greatly expanded trial stretch.
(3) implementation of transmittance structure：The utility model is using the spaced two groups of left-right rotary balls that are parallel to each other
Leading screw 7 plays dual parts of being driven and is oriented to, while opens up transmission window in the cover plate and bottom plate of casing, can coordinate electronics
The microscopic observation such as microscope, X-ray diffractometer, Raman spectrometer, AFM or light microscope instrument uses, to material
Expect the microdeformation of generation, damage the whole dynamic monitoring of process progress until failure damage, can be to the micro object scholarship and moral conduct of material
To be furtherd investigate with deformation damage mechanism.
(4) implementation of fatigue function：The utility model employs the planet-gear speed reducing motor of low time gap, and adopts
By the use of the first synchronous pulley 3, timing belt 4, the second synchronous pulley as transmission mechanism, by the first synchronous pulley 3 and the second timing belt
The gearratio of wheel 5 is set in (1-3):1, further reduce the influence that motor 1 returns gap.Therefore, compare other in-situ test machines,
The utility model has the characteristics of low time gap, so except that can be stretched, compress, creep, in addition to the static test such as relaxation, may be used also
To be circulated, the dynamic test such as fatigue loading.
Although preferred embodiment of the present utility model is described above in conjunction with accompanying drawing, the utility model is not
Above-mentioned embodiment is confined to, above-mentioned embodiment is only schematical, is not restricted, ability
The those of ordinary skill in domain is not departing from utility model objective and scope of the claimed protection feelings under the enlightenment of the present invention
Under condition, the specific conversion of many forms can also be made, these are belonged within the scope of protection of the utility model.
Claims (8)
1. transmission-type fatigue tester in a kind of face of large-sized double-shaft original position, it is characterised in that including X-axis module and Y-axis module, X
Axle module is identical with the structure of Y-axis module, by motor, shaft coupling, the first synchronous pulley, timing belt, the second synchronous pulley, a left side
Dextrorotation ball-screw, crossbeam, fixture, load transducer, grating scale, grating ruler reading head composition；
The motor connects first synchronous pulley by the shaft coupling, and first synchronous pulley is with being arranged at its both sides
Two second synchronous pulleys respectively by the synchronous band connection；Two second synchronous pulleys are separately mounted to two
On the left-right rotary ball-screw, the left-right rotary ball-screw includes symmetrically arranged left hand thread and right-handed thread, two
The left-right rotary ball-screw is parallel to each other and set with rotation direction screw thread homonymy；Connected between two left-right rotary ball-screws
There are two crossbeams, two crossbeams being parallel to each other are separately mounted at the left hand thread of the left-right rotary ball-screw
At right-handed thread；Two symmetrically arranged fixtures, two left and right are separately installed with the opposite face of two crossbeams
It can drive two crossbeams symmetrical during the rotation of rotary roll ballscrew and synchronously carry out move toward one another or move backwards, so that
Two fixture spacing reduce or increase；The load transducer is connected with the fixture；The grating scale and the horizontal stroke
Beam is connected, and is measured by the grating ruler reading head；
Described in the X-axis module and Y-axis module using built in one, another it is external by the way of become one；Built-in institute
State first synchronous pulley of X-axis module or the Y-axis module, the timing belt, second synchronous pulley, the left and right
Rotary roll ballscrew, the crossbeam, the fixture, the load transducer, the grating scale, the grating ruler reading head are arranged in
In the space that the external Y-axis module or the crossbeam of the X-axis module and the left-right rotary ball-screw are surrounded；Outside
The Y-axis module or the X-axis module put are connected between its described crossbeam and the fixture using portal trestle, described
Portal trestle both sides penetrate, so that the built-in X-axis module or the left-right rotary ball-screw of the Y-axis module are from described
Passed through among portal trestle.
2. transmission-type fatigue tester in a kind of large-sized double-shaft original position face according to claim 1, it is characterised in that described
Motor matches somebody with somebody the planet-gear speed reducing motor for setting low back gap.
3. transmission-type fatigue tester in a kind of large-sized double-shaft original position face according to claim 1, it is characterised in that described
The gearratio of first synchronous pulley and second synchronous pulley is (1-3):1.
4. transmission-type fatigue tester in a kind of large-sized double-shaft original position face according to claim 1, it is characterised in that described
The left-right rotary ball-screw, the crossbeam, the load transducer and the sample of X-axis module and the Y-axis module are placed in
In same level.
5. transmission-type fatigue tester in a kind of large-sized double-shaft original position face according to claim 1, it is characterised in that fatigue
The bottom plate of testing machine is provided with twice reinforcement, the reinforcement and the external Y-axis module or the X-axis module it is described
Left-right rotary ball-screw axis is parallel.
6. transmission-type fatigue tester in a kind of large-sized double-shaft original position face according to claim 1, it is characterised in that fatigue
Transmission window is offered on the bottom plate and cover plate of testing machine, the transmission window is right against fixture and the sample position.
7. transmission-type fatigue tester in a kind of large-sized double-shaft original position face according to claim 1, it is characterised in that fatigue
Testing machine is provided with contact-type heating device below sample.
8. transmission-type fatigue tester in a kind of large-sized double-shaft original position face according to claim 1, it is characterised in that fatigue
Testing machine installs lifting water bath below sample.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720758664.3U CN206945459U (en) | 2017-06-27 | 2017-06-27 | Transmission-type fatigue tester in a kind of face of large-sized double-shaft original position |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720758664.3U CN206945459U (en) | 2017-06-27 | 2017-06-27 | Transmission-type fatigue tester in a kind of face of large-sized double-shaft original position |
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| CN206945459U true CN206945459U (en) | 2018-01-30 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107271302A (en) * | 2017-06-27 | 2017-10-20 | 天津大学 | Transmission-type fatigue tester in a kind of large-sized double-shaft face in situ |
| CN108414366A (en) * | 2018-02-01 | 2018-08-17 | 大连理工大学 | A kind of self-balancing type bidirectional tensile tester driven by single motor |
| CN113933165A (en) * | 2021-09-13 | 2022-01-14 | 中山大学 | Double-shaft loading test device for composite material honeycomb sandwich structure |
-
2017
- 2017-06-27 CN CN201720758664.3U patent/CN206945459U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107271302A (en) * | 2017-06-27 | 2017-10-20 | 天津大学 | Transmission-type fatigue tester in a kind of large-sized double-shaft face in situ |
| CN108414366A (en) * | 2018-02-01 | 2018-08-17 | 大连理工大学 | A kind of self-balancing type bidirectional tensile tester driven by single motor |
| CN108414366B (en) * | 2018-02-01 | 2019-12-27 | 大连理工大学 | Self-balancing biaxial tension test device driven by single motor |
| CN113933165A (en) * | 2021-09-13 | 2022-01-14 | 中山大学 | Double-shaft loading test device for composite material honeycomb sandwich structure |
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