CN208254930U - Cantilever type piezoelectric fatigue tester - Google Patents
Cantilever type piezoelectric fatigue tester Download PDFInfo
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- CN208254930U CN208254930U CN201820498530.7U CN201820498530U CN208254930U CN 208254930 U CN208254930 U CN 208254930U CN 201820498530 U CN201820498530 U CN 201820498530U CN 208254930 U CN208254930 U CN 208254930U
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- piezoelectric
- pedestal
- test specimen
- piezoelectric vibrator
- load
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Abstract
The utility model relates to cantilever type piezoelectric fatigue tester, which be made of pedestal, preset load adjustment mechanism, piezoelectric vibrator, loading head, test specimen, mobile fixture block, load transducer, positioning seat, vibration isolation rubber；Piezoelectric vibrator is to be bonded by rectangular metal elastic base plate and rectangular piezoelectric ceramic piece, and use cantilever support mode, and the periphery fixed bearing relative to circular piezoelectric vibrator or circular ring shape piezoelectric vibrator has that amount of deflection is big, the big advantage of output end movement；Meanwhile it is adjustable to realize Rectangular piezoelectric oscillator jib-length, so that system is had different vibration characteristics, meets the requirement of different output performances；One end of the piezoelectric vibrator of the utility model directly acts on test specimen, and the displacement of output end is made to be entirely delivered to test specimen, preferably realizes the repeated bend test of micro-member and precision component and the purpose of detection.
Description
Technical field
The utility model belongs to tiny load and side crops industry fatigue test and detection field, in particular to a kind of cantilever type piezoelectric
Fatigue tester.
Background technique
The fatigue tester mainly detection to fatigue behaviours such as the tension and compression, torsion, bending of metal or non-metallic member.It is existing
Fatigue tester be all made of electromagnetic drive or electro-hydraulic servo driving, limited by system impedance and magnetic resistance, general work frequency
No more than 200Hz, and there are amplitude controlling low precision, loading accuracy is poor, resonance stability is bad the problems such as, be unsuitable for micro- load
The fatigue test and detection of lotus and side crops industry precision component.And the fatigue inspection of circular piezoelectric vibrator or the driving of circular ring shape piezoelectric vibrator
Survey device, there is that excitation amplitude is small, the problems such as amount of deflection is small, resonant state is non-adjustable, majority be resonator system amplify and
It works under resonance state.
The utility model aim is to make up existing technical deficiency, is proposed a kind of using Rectangular piezoelectric oscillator as driving force
The beam type fatigue tester in source, the adjustable structure piezoelectric vibrator jib-length adjust vibration characteristics, meet dissimilarity
Can output requirement, therefore a kind of high frequency can be formed, amplitude is larger, vibrational state is adjustable and is suitable for tiny load and side crops industry examination
The repeated bend test and detection of part.
Summary of the invention
The cantilever type piezoelectric fatigue tester of the utility model, comprising: pedestal, preset load adjustment mechanism, piezoelectric vibrator,
Loading head, test specimen, mobile fixture block, load transducer, positioning seat, vibration isolation rubber, the preset load adjustment mechanism be by
Mobile sliding block, adjustment spring, lower compact heap, upper compact heap and fastening bolt are constituted, and pedestal is equipped with groove and strip hole, mobile
In the bottom insertion base recess of sliding block, mobile sliding block can move linearly in groove, and pass through the strip hole on pedestal
The fixed position a certain on the base of fastening bolt, be equipped with the biggish adjustment spring of rigidity between lower compact heap and mobile sliding block,
Test specimen initial stage can be loaded by screwing fastening bolt, pedestal is supported by 4 vibration isolation rubbers, mobile fixture block for positioning and
Test specimen is clamped, and can be moved in the sliding slot of positioning seat according to its demand, when there is external alternating voltage to act on piezoelectricity
When oscillator, since inverse piezoelectric effect occurs bending and deformation, the loading head of end connection acts on test specimen piezoelectric vibrator, and
Static and dynamic stress data are extracted by load transducer, to realize the fatigue test and detection of test specimen.
Preferably, piezoelectric vibrator is to be formed by elastic metal substrate and piezoelectric ceramic piece with solidification glue sticking, elastic metallic
Substrate connects power supply with piezoelectric ceramics on piece difference extraction electrode, and piezoelectric ceramic piece is bonded in elastic metallic using double ceramic wafers
On substrate or using single ceramic bonding wafer on elastic metal substrate.
Preferably, adjustment spring is arranged to carry out initial stage load to test specimen, and rigidity is shaken much larger than piezoelectricity
The rigidity of son realizes the quiet load to test specimen by screwing the fastening bolt through pedestal.
Detailed description of the invention
Fig. 1 is the three-dimensional main view of the utility model.
Fig. 2 is the stereoscopic schematic diagram of the utility model.
Fig. 3 (a) is the structural schematic diagram that the utility model is bonded on elastic metal substrate using double ceramic wafers.
Fig. 3 (b) is the utility model using structural schematic diagram of the single ceramic bonding wafer on elastic metal substrate.
In figure: 1- pedestal, the preset load adjustment mechanism of 2-, 3- piezoelectric vibrator, the mobile sliding block of 21-, 22- adjustment spring,
The upper compact heap of compact heap, 24- under 23-, 25- fastening bolt, 31- elastic metal substrate, 32- piezoelectric ceramic piece, 4- loading head, 5-
Test specimen, the mobile fixture block of 6-, 7- load transducer, 8- positioning seat, 9- vibration isolation rubber.
Specific embodiment
Referring to FIG. 1, FIG. 2 and FIG. 3, the cantilever type piezoelectric fatigue tester of the utility model is by pedestal 1, preset load
Adjustment mechanism 2, piezoelectric vibrator 3, loading head 4, test specimen 5, mobile fixture block 6, load transducer 7, positioning seat 8, vibration isolation rubber 9
It constitutes.
The cantilever type piezoelectric fatigue detecting machine of the utility model is 3 conduct of piezoelectric vibrator by converting electrical energy into mechanical energy
Drive force source, preset load adjustment mechanism 2 are by mobile sliding block 21, adjustment spring 22, lower compact heap 23, upper compact heap 24 and tight
Fixing bolt 25 is constituted, and pedestal 1 is equipped with groove and strip hole, and the bottom of mobile sliding block 21 is embedded in 1 groove of pedestal, mobile sliding block
21 can move linearly in groove, and be fixed on a certain position on pedestal 1 by the fastening bolt 25 of the strip hole on pedestal 1
Set, one end of elastic metal substrate 31 is clamped between compact heap 24 and lower compact heap 23, elastic metal substrate 31 it is another
One end is provided with through-hole, the affixed vibration-sensing rod in through hole, and is connected with upper and lower two nut tightenings, lower compact heap 23 and mobile sliding block 21
Between be equipped with the biggish adjustment spring 22 of rigidity, 5 initial stage of test specimen can be loaded by screwing fastening bolt 25, pedestal 1 is by 4
A vibration isolation rubber support, mobile fixture block 6 are used to positioning and clamping test specimen, and according to its demand can be in the cunning of positioning seat 8
It is moved in slot.When there is external alternating voltage to act on piezoelectric vibrator 3, piezoelectric vibrator 3 is bent change due to inverse piezoelectric effect
The loading head 4 of shape, end connection acts on test specimen 5, to realize the fatigue test and detection of test specimen 5.Pass through
Mobile sliding block 21 in preset load adjustment mechanism 2 moves in sliding slot, changes the length of 3 cantilever of piezoelectric vibrator, has system
There is different vibration characteristics, and then meets the requirement of different output performances.
Piezoelectric vibrator 3 is to be formed by elastic metal substrate 31 and piezoelectric ceramic piece 32 with solidification glue sticking, elastic metallic base
Plate 31 connects power supply with extraction electrode is distinguished on piezoelectric ceramic piece 32, and piezoelectric ceramic piece 32 is bonded in bullet using double ceramic wafers
On property metal substrate 31, single ceramic bonding wafer can also be used on elastic metal substrate 31.
Adjustment spring 22 is in order to which 5 progress initial stage load of test specimen is arranged, and rigidity is much larger than piezoelectric vibrator 3
Rigidity realizes the quiet load to test specimen 5 by screwing the fastening bolt 25 through pedestal 1.
Claims (3)
1. cantilever type piezoelectric fatigue tester, comprising: pedestal (1), preset load adjustment mechanism (2), piezoelectric vibrator (3), load
Head (4), test specimen (5), mobile fixture block (6), load transducer (7), positioning seat (8), vibration isolation rubber (9), it is characterised in that:
The preset load adjustment mechanism (2) is by mobile sliding block (21), adjustment spring (22), lower compact heap (23), upper compact heap
(24) it is constituted with fastening bolt (25), pedestal (1) is equipped with groove and strip hole, and the bottom of mobile sliding block (21) is embedded in pedestal
(1) in groove, mobile sliding block (21) can move linearly in groove, and pass through the fastening spiral shell of the strip hole on pedestal (1)
Bolt (25) is fixed on a certain position on pedestal (1), and the biggish tune of rigidity is equipped between lower compact heap (23) and mobile sliding block (21)
Whole spring (22) can load test specimen (5) initial stage by screwing fastening bolt (25), and pedestal (1) is by 4 vibration isolation rubbers
(9) it supports, mobile fixture block (6) are used to positioning and clamping test specimen (5), and according to its demand can be in the cunning of positioning seat (8)
It is moved in slot.
2. cantilever type piezoelectric fatigue tester according to claim 1, it is characterised in that: the piezoelectric vibrator (3) be by
Elastic metal substrate (31) and piezoelectric ceramic piece (32) are formed with solidification glue sticking, elastic metal substrate (31) and piezoelectric ceramic piece
(32) extraction electrode is distinguished on and connects power supply, and piezoelectric ceramic piece (32) is bonded in elastic metal substrate (31) using double ceramic wafers
Above or using single ceramic bonding wafer on elastic metal substrate (31).
3. cantilever type piezoelectric fatigue tester according to claim 1, it is characterised in that: the adjustment spring (22) be for
Initial stage load is carried out to test specimen (5) and is arranged, rigidity is much larger than the rigidity of piezoelectric vibrator (3), is run through by screwing
The fastening bolt (25) of pedestal (1) realizes the quiet load to test specimen (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820498530.7U CN208254930U (en) | 2018-04-10 | 2018-04-10 | Cantilever type piezoelectric fatigue tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820498530.7U CN208254930U (en) | 2018-04-10 | 2018-04-10 | Cantilever type piezoelectric fatigue tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208254930U true CN208254930U (en) | 2018-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820498530.7U Expired - Fee Related CN208254930U (en) | 2018-04-10 | 2018-04-10 | Cantilever type piezoelectric fatigue tester |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109990999A (en) * | 2019-04-30 | 2019-07-09 | 吉林大学 | Underneath type drives piezoelectricity HF fatigue testing machine |
| CN110057695A (en) * | 2019-04-15 | 2019-07-26 | 北京工业大学 | A kind of apparatus and method measuring beams of concrete damping ratio |
| CN110411825A (en) * | 2019-09-06 | 2019-11-05 | 四川轻化工大学 | Testing device for fatigue test of aircraft skin |
| CN110868101A (en) * | 2019-12-19 | 2020-03-06 | 南京邮电大学 | Rotary self-frequency-modulation piezoelectric vibration energy collector |
| CN111932997A (en) * | 2020-08-07 | 2020-11-13 | 重庆同纳科技发展有限责任公司 | Teaching aid |
| CN114486583A (en) * | 2022-02-22 | 2022-05-13 | 株洲联诚集团减振器有限责任公司 | Rigidity performance testing mechanism for steel wire rope vibration isolator |
-
2018
- 2018-04-10 CN CN201820498530.7U patent/CN208254930U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110057695A (en) * | 2019-04-15 | 2019-07-26 | 北京工业大学 | A kind of apparatus and method measuring beams of concrete damping ratio |
| CN110057695B (en) * | 2019-04-15 | 2022-03-15 | 北京工业大学 | Device and method for measuring damping ratio of concrete beam |
| CN109990999A (en) * | 2019-04-30 | 2019-07-09 | 吉林大学 | Underneath type drives piezoelectricity HF fatigue testing machine |
| CN110411825A (en) * | 2019-09-06 | 2019-11-05 | 四川轻化工大学 | Testing device for fatigue test of aircraft skin |
| CN110411825B (en) * | 2019-09-06 | 2024-04-19 | 四川轻化工大学 | Test device for aircraft skin fatigue test |
| CN110868101A (en) * | 2019-12-19 | 2020-03-06 | 南京邮电大学 | Rotary self-frequency-modulation piezoelectric vibration energy collector |
| CN110868101B (en) * | 2019-12-19 | 2021-11-19 | 南京邮电大学 | Rotary self-frequency-modulation piezoelectric vibration energy collector |
| CN111932997A (en) * | 2020-08-07 | 2020-11-13 | 重庆同纳科技发展有限责任公司 | Teaching aid |
| CN114486583A (en) * | 2022-02-22 | 2022-05-13 | 株洲联诚集团减振器有限责任公司 | Rigidity performance testing mechanism for steel wire rope vibration isolator |
| CN114486583B (en) * | 2022-02-22 | 2024-06-07 | 株洲联诚集团减振器有限责任公司 | Rigidity performance test mechanism for steel wire rope vibration isolator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181218 Termination date: 20200410 |