CN106442179A - Parallel fatigue machine structure and work method thereof - Google Patents
Parallel fatigue machine structure and work method thereof Download PDFInfo
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- CN106442179A CN106442179A CN201610803909.XA CN201610803909A CN106442179A CN 106442179 A CN106442179 A CN 106442179A CN 201610803909 A CN201610803909 A CN 201610803909A CN 106442179 A CN106442179 A CN 106442179A
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- fatigue
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- machine structure
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- 238000000034 method Methods 0.000 title claims abstract description 8
- 230000007246 mechanism Effects 0.000 claims abstract description 44
- 238000012360 testing method Methods 0.000 claims description 22
- 238000009661 fatigue test Methods 0.000 claims description 13
- 238000003384 imaging method Methods 0.000 claims description 10
- 208000037656 Respiratory Sounds Diseases 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 5
- 238000004088 simulation Methods 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 description 4
- 240000002853 Nelumbo nucifera Species 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 2
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0005—Repeated or cyclic
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0073—Fatigue
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0641—Indicating or recording means; Sensing means using optical, X-ray, ultraviolet, infrared or similar detectors
- G01N2203/0647—Image analysis
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a parallel fatigue machine structure and a work method thereof. The parallel fatigue machine structure comprises a base (1), a lower clamping mechanism (7) is mounted at the center of the base (1), and three lower supports (2) are symmetrically and evenly arranged at the center of the upper edge of the base; an upper platform (5) is further included and provided with three locating guide rails (5-1) which are arranged in the radial direction and intersect at the center of the upper platform, and an upper clamping mechanism (6) is further mounted at the intersection of the three locating guide rails. The lower supports (2) and upper supports (4) are in one-to-one correspondence, totally three pairs of upper and lower supports are formed, a telescopic driving mechanism (3) is mounted between each pair of upper and lower supports, one end of each telescopic driving mechanism (3) is hinged to the corresponding lower support (2), and the other end of each telescopic driving mechanism (3) is hinged to the corresponding upper support (4). According to the parallel fatigue machine structure and the work method thereof, loading of complex loads of multiple working conditions can be achieved, and the structure is compact.
Description
Technical field
The present invention relates to a kind of parallel connection fatigue machine structure and its method of work, particularly belong to material structure performance
The fatigue experiment field of experiment.
Background technology
During practical engineering application, engineering component suffers from the dynamic load effect of complexity in use,
Different from the dead weight during traditional structure strength check, material can show notable under the conditions of repeating loading condition
Fatigue properties, easily occur fatigue rupture and cause structural fatigue lost efficacy, have a strong impact on the use safety of structure.
Fatigue Test Research is carried out to the structural test piece under complicated alternate load effect and is to ensure that structure safety in utilization
One important content.
Correlational study for Fatigue Characteristics of Materials has been carried out for many years, in order to meet different component version and difference
The loading of fatigue load under load condition, fatigue machine has multiple structural forms.Existing fatigue machine can be divided into liquid
Pressure servo-type, electromagnetic type and mechanical type three major types are other.Wherein, hydraulic servo type fatigue machine has load and applies to stablize, and carries
Lotus peak value is big, and load applies the big feature of scope, but descends power consumption big in working order, high cost；Electromagnetic type fatigue test
Airborne lotus applies frequency height, but load peaks are little, are unsuitable for the fatigue test of test specimen under severe duty；Mechanical type fatigue test
Machine, simple for structure, control easily, but the drawbacks of there are output loads and be limited in scope.Additionally, classic fatigue testing machine is general
All over the centering type adding carrier output cyclic fatigue loads adopting, output waveform is only limitted to sinusoidal wave form, and output loads are unstable
Fixed, cumulative error is big.
With the increase of component self structure and external load operative condition complexity, fatigue rig is added
Carrier frequency rate, fatigue load output amplitude, the material members scope of application, operability, detection property, the aspect such as cost and portability all carries
Go out higher requirement.
Content of the invention
The present invention be directed to existing fatigue rig above shortcomings it is proposed that a kind of parallel connection fatigue test structure and
Its method of work, this invention loads fatigue load for test specimen by the way of multigroup drive mechanism parallel drive, is capable of many
Plant the loading of operating mode complex load, compact conformation, the test of different size test specimen can be realized simultaneously by adjusting support position
Require, additionally, by can conveniently realize the regulation of multigroup drive mechanism kinematic parameter to test specimen Fatigue Testing Loads peak value
Control.
A kind of parallel connection fatigue machine structure it is characterised in that：Including base, lower clamping machine is installed in base center
Structure, base is uniformly arranged three undersettings along centrosymmetry；Also include upper mounting plate, upper mounting plate have three radially arranged and
It is intersected in the positioning guide rail of upper mounting plate center, three positioning guide rails are in 120 degree each other；It is mounted in every positioning guide rail
One upper bracket, three positioning guide rail intersections are also equipped with upper clamping mechanism；Above-mentioned undersetting and upper bracket correspond, conformal
Become three to upper and lower bearing, between the upper and lower bearing of each pair, be mounted on telescoping drive mechanism, one end of telescoping drive mechanism with
Bearing is hinged, and the other end is hinged with upper bracket.
When carrying out fatigue test, test specimen one end is fixed by described upper clamping mechanism, and the test specimen other end passes through described lower folder
Tight mechanism is fixed, and adapts to different sample dimensions requirements by adjusting relative position in positioning guide rail for the upper bracket；By adjustment
The upper bracket and upper clamping mechanism relative position in positioning guide rail realizes the simulation of test specimen difference operating mode, by stretching to multigroup
The loading of the control realization test specimen different tests load of contracting drive mechanism kinematic parameter.
Described telescoping drive mechanism can be piston rod mechanism.
Electronic imaging device can be provided with described telescoping drive mechanism, auxiliary completes automatic to fatigue sample crackle
Detection；When electronic imaging device detects crackle, that is, send the relative motion of signal terminating drive mechanism.
The present invention can be tired by the fatigue sample of the position adjustment adaptation different structure size and shape of associated components
Labor test requirements document, by the motor control to telescoping drive mechanism in parallel, it is possible to achieve complicated under multi-frequency and amplitude perturbations
The loading of fatigue load, simultaneously compact conformation be easy to carry, auxiliary electron imaging device can complete to fatigue sample crackle
Automatic detection.
Brief description
Fig. 1 is fatigue machine overall structure diagram in parallel；
Fig. 2 is that fatigue machine in parallel loads upper mounting plate structural representation；
Fig. 3 is fatigue machine driving mechanism structure schematic diagram in parallel；
Fig. 1, label title in 2,3：1 base, 2 upper brackets, 3 telescoping drive mechanism, 4 upper brackets, 5 upper mounting plates,
5-1 positioning guide rail, 6 upper clamping mechanisms, 7 times clamp systems, 8 electronic imaging devices.
Specific embodiment
Below in conjunction with accompanying drawing, the implementation of the present invention is elaborated.
The core requirement of fatigue test is to provide stable cyclic load by loading equipemtn to target, with existing phase
Close fatigue rig compare, the present invention using parallel institution realize to fatigue sample load repeat load.According to parallel machine
Structure correlational study, different composition forms, the parallel institution of different connected modes, the freedom of motion of moving platform and control strategy are not
With.Parallel institution moving platform often has multiple directions translation and rotary freedom, and the loading for different operating mode fatigue sample carries
Supply facility.
A kind of parallel connection fatigue machine structure it is characterised in that：
Including base 1, lower clamp system 7 is installed in base 1 center, and base is uniformly arranged three undersettings along centrosymmetry
2；
Also include upper mounting plate 5, upper mounting plate 5 has three positioning guide rail 5- that are radially arranged and being intersected in upper mounting plate center
1, three positioning guide rails are in 120 degree each other；It is mounted on a upper bracket 4, three positioning guide rail intersections in every positioning guide rail
It is also equipped with upper clamping mechanism 6；
Above-mentioned undersetting 2 and upper bracket 4 correspond, and form three altogether to upper and lower bearing, are respectively mounted between the upper and lower bearing of each pair
There is telescoping drive mechanism 3, one end of telescoping drive mechanism 3 is hinged with undersetting 2, the other end is hinged with upper bracket 4.
Described telescoping drive mechanism 3 is piston rod.
Described telescoping drive mechanism 3 is provided with electronic imaging device 8, auxiliary completes automatic to fatigue sample crackle
Detection.
When carrying out fatigue test, test specimen one end is passed through described upper clamping mechanism 3 and is fixed, and the test specimen other end passes through described lower folder
Tight mechanism 7 is fixing, is required by adjusting the different sample dimensions of relative position adaptation in positioning guide rail 5-1 for the upper bracket 4；
Realize test specimen difference operating mode by adjusting upper bracket 4 and upper clamping mechanism 6 relative position in positioning guide rail 5-1
Simulation, by the loading of the control realization test specimen different tests load to multigroup telescoping drive mechanism 3 kinematic parameter.
Described telescoping drive mechanism 3 is provided with electronic imaging device 8, auxiliary completes the automatic inspection to fatigue sample crackle
Survey；When electronic imaging device 8 detects crackle, that is, send the relative motion of signal terminating drive mechanism 3.
Claims (5)
1. a kind of parallel connection fatigue machine structure it is characterised in that：
Including base（1）, base（1）Lower clamp system is installed in center（7）, base is uniformly arranged three along centrosymmetry
Undersetting（2）；
Also include upper mounting plate（5）, upper mounting plate（5）There are three positioning that are radially arranged and being intersected in upper mounting plate center lead
Rail（5-1）, three positioning guide rails are each other in 120 degree；It is mounted on a upper bracket in every positioning guide rail（4）, three positioning lead
Rail intersection is also equipped with upper clamping mechanism（6）；
Above-mentioned undersetting（2）And upper bracket（4）Correspond, form three altogether to upper and lower bearing, between the upper and lower bearing of each pair all
Telescoping drive mechanism is installed（3）, telescoping drive mechanism（3）One end and undersetting（2）Hinged, the other end and upper bracket（4）
Hinged.
2. according to claim 1 parallel connection fatigue machine structure it is characterised in that：
Described telescoping drive mechanism（3）For piston rod.
3. according to claim 1 and 2 parallel connection fatigue test structure it is characterised in that：
In described telescoping drive mechanism（3）Be provided with electronic imaging device（8）, auxiliary completes automatic to fatigue sample crackle
Detection.
4. according to claim 1 parallel connection fatigue machine structure method of work it is characterised in that：
When carrying out fatigue test, described upper clamping mechanism is passed through in test specimen one end（3）Fixing, the test specimen other end is by described lower clamping
Mechanism（7）Fixing, by adjusting upper bracket（4）In positioning guide rail（5-1）Interior relative position adapts to different sample dimensions and requires；
By adjusting upper bracket（4）And upper clamping mechanism（6）In positioning guide rail（5-1）It is different that interior relative position realizes test specimen
The simulation of operating mode, by multigroup telescoping drive mechanism（3）The loading of the control realization test specimen different tests load of kinematic parameter.
5. according to claim 4 parallel connection fatigue test structure method of work it is characterised in that：
In described telescoping drive mechanism（3）It is provided with electronic imaging device（8）, assist and complete the automatic inspection to fatigue sample crackle
Survey；Work as electronic imaging device（8）When crackle is detected, that is, send signal terminating drive mechanism（3）Relative motion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610803909.XA CN106442179A (en) | 2016-09-06 | 2016-09-06 | Parallel fatigue machine structure and work method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610803909.XA CN106442179A (en) | 2016-09-06 | 2016-09-06 | Parallel fatigue machine structure and work method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN106442179A true CN106442179A (en) | 2017-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610803909.XA Pending CN106442179A (en) | 2016-09-06 | 2016-09-06 | Parallel fatigue machine structure and work method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1439869A (en) * | 2002-02-22 | 2003-09-03 | 李贵涛 | Virtual mechanical axis material test systems |
| CN101451933A (en) * | 2008-12-18 | 2009-06-10 | 北京林业大学 | Six-dimension loading material mechanical test machine |
| CN102279124A (en) * | 2011-05-23 | 2011-12-14 | 湖州师范学院 | Six degree of freedom boundary load simulation experiment system |
| CN202614540U (en) * | 2012-05-31 | 2012-12-19 | 天津福云天翼科技有限公司 | Loading device based on parallel mechanism with six degrees of freedom |
-
2016
- 2016-09-06 CN CN201610803909.XA patent/CN106442179A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1439869A (en) * | 2002-02-22 | 2003-09-03 | 李贵涛 | Virtual mechanical axis material test systems |
| CN101451933A (en) * | 2008-12-18 | 2009-06-10 | 北京林业大学 | Six-dimension loading material mechanical test machine |
| CN102279124A (en) * | 2011-05-23 | 2011-12-14 | 湖州师范学院 | Six degree of freedom boundary load simulation experiment system |
| CN202614540U (en) * | 2012-05-31 | 2012-12-19 | 天津福云天翼科技有限公司 | Loading device based on parallel mechanism with six degrees of freedom |
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Application publication date: 20170222 |
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