CN203443930U - Auxiliary clamping device for ultrasound fatigue test - Google Patents
Auxiliary clamping device for ultrasound fatigue test Download PDFInfo
- Publication number
- CN203443930U CN203443930U CN201320588944.6U CN201320588944U CN203443930U CN 203443930 U CN203443930 U CN 203443930U CN 201320588944 U CN201320588944 U CN 201320588944U CN 203443930 U CN203443930 U CN 203443930U
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- Prior art keywords
- clamping
- ferrule
- fatigue test
- clamping device
- cushion block
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Abstract
The utility model discloses an auxiliary clamping device for ultrasound fatigue test, which solves the problems of loose clamping and poor universality of a conventional clamping device. The auxiliary clamping device comprises a clamping ferrule, arc-shaped cushion blocks, a connecting bolt and a puller bolt, wherein the inner ring of the clamping ferrule is circular, the outer ring of the clamping ferrule is rectangular octagonal, the connecting bolt passes through the side wall of the clamping ferrule and is used for tightly combining the arc-shaped cushion block to the inner periphery of the clamping ferrule, the puller bolt passes through the side wall of the clamping ferrule at the other opposite side and is used for pulling the clamping end of a test specimen on the arc-shaped cushion block, and the arc-shaped cushion blocks different in thickness and specification are matched with the clamping ends of the test specimens different in diameter. The auxiliary clamping device has the advantages that the force for clamping the test specimen is greatly increased, the slipping phenomenon is avoided in a clamping process, the auxiliary clamping device can be suitable for ultrasound fatigue test specimens with different sizes by selecting different cushion blocks and has good universality, the coaxial problem of the test specimen and the center of a circle of the ferrule is solved, and as the outer side of the clamping ferrule is rectangular octagonal, the auxiliary clamping device is free of the limitation of the operation radius of a spanner and is simple to install and dismantle.
Description
Technical field
A kind of ultrasonic fatigue test auxiliary holding device.
Background technology
Ultrasonic fatigue test is a kind of new technology of test material fatigue behaviour, and its electric signal that adopts piezoelectric ceramic transducer that high frequency electric source is supplied with converts the mechanical vibration of same frequency to, then through vibration displacement amplifier, amplifies.Sample one end is connected with displacement amplifier, and one end freely in addition.Under the excitation of displacement amplifier, there is resonance, in sample, generate resonance wave, along sample, axially form and draw-press symmetrical cycle load, set up length travel, stress field.
Ultrasonic fatigue experiment work very high frequency, can improve the efficiency of torture test greatly, but also testing equipment is had higher requirement simultaneously.One end and the Ultrasonic Fatigue Test-Bed of Specimen for Fatigue Test at Ultrasonic Frequency are threaded connection, and the other end is in free state, and its connecting portion becomes one of ultrasonic fatigue test key factor.This be because: 1, ultrasonic fatigue needs that sample and testing machine are whole keeps certain rigidity and natural frequency of vibration, could under the excitation of displacement amplifier, there is resonance like this, thereby and connecting portion imprecision slightly will cause that the variation of sample and testing machine integral rigidity causes test failure; If 2 at a time connecting portion generations are loosening, not only can cause sample to lose efficacy, test cannot be carried out, and can cause great potential safety hazard.2.0 * 10
4under the ultrahigh frequency duty of Hz, one loosening all may cause sample completely with testing machine disengaging, causing splashes hurts sb.'s feelings.3, ultrasonic fatigue test operates continually at 2.0 * 10 for a long time
4under the ultrahigh frequency environment of Hz, this itself just has extremely strong test to the quality of connection of connecting portion.
The sample holder instrument that Ultrasonic Fatigue Test-Bed carries is comprised of with the bolt that run through rectangular parallelepiped vertical with round hole axial a rectangular parallelepiped with circular hole.During use, sample holder end is placed in circular hole, then be with tight bolt by sample holder end surfaces and fixture circular hole Surface Contact and clamp, with spanner, drive one end of rectangular parallelepiped to rotate again, fixture is tightened in experimental machine together with sample, by sample holder end surfaces and friction force between fixture circular hole surface, drives together with sample and rotate.So just have following problem: 1, through after Reusability repeatedly, friction force between sample holder end surfaces and fixture circular hole surface can be more and more less, can skid in sample holder end surfaces and fixture circular hole surface, make the undertighten that is connected of Specimen for Fatigue Test at Ultrasonic Frequency and testing machine; 2, versatility is bad.Existing sample holder instrument can only mount and dismount the sample of the fixed measure matching with its circular hole size, and the sample that bare terminal end size circular hole aperture is not inconsistent is helpless.3, installation and removal sample inconvenience.Specimen for Fatigue Test at Ultrasonic Frequency is to be contained in an airtight environmental cabinet, if the rotation end of rectangular parallelepiped forwards to by box inside, spanner just cannot be tightened operation, and the tight ness rating that sample is connected with testing machine can be beaten and buckle greatly.
Summary of the invention
The purpose of this utility model is to overcome prior art defect, and a kind of ultrasonic fatigue test auxiliary holding device is provided.
The technical solution of the utility model is achieved in that a kind of ultrasonic fatigue test auxiliary holding device, it is: it is that clamping lasso, arc cushion block, coupling bolt and the puller bolt that circle outer ring is regular polygon forms by inner ring, coupling bolt is tightly combined in arc cushion block on clamping lasso inner periphery through clamping lasso sidewall, and puller bolt holds out against sample holder end on arc cushion block through another relative edge's clamping lasso sidewall.
Preferably, described arc cushion block has multiple different thickness specification to match with the sample holder end of different-diameter.
Preferably, described clamping lasso outer ring is octagon.
Preferably, described coupling bolt and puller bolt respectively have two at least.
The utility model increases greatly to the holding force of sample, has avoided the skidding in clamping process; And by selecting different cushion blocks to go for the Specimen for Fatigue Test at Ultrasonic Frequency of sizes, versatility is good, has solved the concentricity problem in sample and the lasso center of circle; Clamping lasso outside is octagon, is not subject to the restriction of spanner operating radius, and installation and removal are simple.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
In figure, 1-clamps lasso; 2-coupling bolt; 3-arc cushion block; 4-puller bolt; 5-sample holder end.
Embodiment
Below in conjunction with accompanying drawing, be further described:
As shown in Figure 1, a kind of ultrasonic fatigue test auxiliary holding device, it is the clamping lasso 1 that circle outer ring is octagon by inner ring, arc cushion block 3, coupling bolt 2 and puller bolt 4 form, coupling bolt 2 and puller bolt 4 respectively have two, coupling bolt 2 is tightly combined in arc cushion block 3 on clamping lasso 1 inner periphery through clamping lasso 1 sidewall, puller bolt 4 holds out against sample holder end 5 on arc cushion block 3 through another relative edge's clamping lasso 1 sidewall, described arc cushion block 3 has multiple different thickness specification to match to hold out against with the sample holder end 5 of different-diameter.
The utlity model has following characteristics:
1, the utility model clamping lasso 1 adopts the version of octagon, is beneficial to the operation of spanner in environmental cabinet while tightening sample holder end 5, and operator can be screwed into grip of testing machine completely by sample, can not leave gap;
2, clamping operation adopts arc cushion block 3 and two modes that interior hexagonal puller bolt 4 holds out against, and holding force strengthens greatly, has avoided the skidding in clamping process;
3, the utility model has adopted the mode of replaceable cushion block, prepared as required the arc cushion block 3 of sizes thickness, greatly improved the scope of application of device, and by the size of arc cushion block 3, realize the entirely on the center of sample and clamping device, thereby avoid making sample to produce distortion, affect test findings in rundown process;
There are several technical requirements manufacturing process aspect: the mild carbon steel processing that 1, clamping lasso 1 use intensity is higher, in order to avoid cause lasso distortion in rundown process; 2, arc cushion block 3 adopts the lower brass manufacture of intensity, is beneficial to the laminating of Specimen for Fatigue Test at Ultrasonic Frequency and arc cushion block 3, increasing friction force; 3, the utility model coupling bolt 2 and puller bolt 4 all adopt hexagon socket head cap screw, in the time of convenient installation, also can provide larger clamping force.
Claims (4)
1. a ultrasonic fatigue test auxiliary holding device, it is characterized in that: it is that clamping lasso, arc cushion block, coupling bolt and the puller bolt that circle outer ring is regular polygon forms by inner ring, coupling bolt is tightly combined in arc cushion block on clamping lasso inner periphery through clamping lasso sidewall, and puller bolt holds out against sample holder end on arc cushion block through another relative edge's clamping lasso sidewall.
2. a kind of ultrasonic fatigue test auxiliary holding device according to claim 1, is characterized in that: described arc cushion block has multiple different thickness specification to match with the sample holder end of different-diameter.
3. a kind of ultrasonic fatigue test auxiliary holding device according to claim 1 and 2, is characterized in that: described clamping lasso outer ring is octagon.
4. a kind of ultrasonic fatigue test auxiliary holding device according to claim 3, is characterized in that: described coupling bolt and puller bolt respectively have two at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320588944.6U CN203443930U (en) | 2013-09-24 | 2013-09-24 | Auxiliary clamping device for ultrasound fatigue test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320588944.6U CN203443930U (en) | 2013-09-24 | 2013-09-24 | Auxiliary clamping device for ultrasound fatigue test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203443930U true CN203443930U (en) | 2014-02-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320588944.6U Expired - Fee Related CN203443930U (en) | 2013-09-24 | 2013-09-24 | Auxiliary clamping device for ultrasound fatigue test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203443930U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108387443A (en) * | 2018-05-22 | 2018-08-10 | 吉林大学 | A kind of multi-direction load solder joint thin plate test specimen tensile fatigue Special test fixture |
| CN109374189A (en) * | 2018-09-13 | 2019-02-22 | 大连理工大学 | Channel ultrasonic tools for bolts ' pretension force test system |
-
2013
- 2013-09-24 CN CN201320588944.6U patent/CN203443930U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108387443A (en) * | 2018-05-22 | 2018-08-10 | 吉林大学 | A kind of multi-direction load solder joint thin plate test specimen tensile fatigue Special test fixture |
| CN108387443B (en) * | 2018-05-22 | 2023-08-08 | 吉林大学 | Special test fixture for tensile fatigue of multi-direction loading welding spot sheet test piece |
| CN109374189A (en) * | 2018-09-13 | 2019-02-22 | 大连理工大学 | Channel ultrasonic tools for bolts ' pretension force test system |
| CN109374189B (en) * | 2018-09-13 | 2020-12-11 | 大连理工大学 | Multichannel ultrasonic bolt pretightening force test system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170717 Address after: 430083, Gate No. 2, Qingshan District, Hubei, Wuhan Patentee after: Wuhan iron and Steel Company Limited Address before: 430080 Wuhan, Hubei Friendship Road, No. 999, Wuchang Patentee before: Wuhan Iron & Steel (Group) Corp. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140219 Termination date: 20190924 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |