CN206440555U - Four-point bending stress corrosion (cracking) test fixture - Google Patents
Four-point bending stress corrosion (cracking) test fixture Download PDFInfo
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- CN206440555U CN206440555U CN201720022678.9U CN201720022678U CN206440555U CN 206440555 U CN206440555 U CN 206440555U CN 201720022678 U CN201720022678 U CN 201720022678U CN 206440555 U CN206440555 U CN 206440555U
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Abstract
The utility model provides a kind of four-point bending stress corrosion (cracking) test fixture, including loaded seat, the test fixture pedestal being fixed in the loaded seat, it is arranged at the loading blocks of test fixture base interior, the sliding block being arranged at below the test fixture pedestal and the dial gauge being fixed on below sliding block, the first groove is opened up in the middle part of the test fixture pedestal, the middle part of lower end has breach, form symmetrical two U-shaped supports, the upper surface of the support is step, ecto-entad is followed successively by first surface and second surface, cross section is opened up on the first surface and second surface respectively for semicircular second groove and the 3rd groove.There are two stations on test fixture pedestal of the present utility model, a sleeve clamp is can be suitably used for two kinds of different testpieces sizes, dramatically saves on fixture manufacturing cost；Load and measure simple and easy to do, convenient operation, and ensure that the authenticity of the test data of different dimension test parts in two.
Description
Technical field
The utility model belongs to stress corrosion (cracking) test field, specifically, is on a kind of four-point bending stress corrosion examination
Test fixture.
Background technology
In the prior art, battery of tests part is soaked in corrosive environment by four-point bending stress corrosion (cracking) test requirement simultaneously
Row experiment, and each testpieces is required for a set of clamp base clamping.Size, quantity batch system that would generally be according to testpieces
Make clamp base.When the size of testpieces changes, old clamp base is often no longer applicable, it is necessary to according to new experiment
Part size redesigns the clamp base of manufacture batch, causes the significant wastage of fixture resource.
In addition, the loading principle of four-point bending stress corrosion (cracking) test is come reaction stress situation according to the amount of deflection of testpieces,
So the measurement for ensureing amount of deflection is also a crucial part in process of the test.
Therefore, it is necessary to be improved to prior art, four-point bending stress corrosion (cracking) test fixture is set to can adapt in two
Testpieces size is planted, and loads and measures simple and easy to do, convenient operation ensure that the accuracy of deflection metrology.
Utility model content
The purpose of this utility model is to provide a kind of four-point bending stress corrosion (cracking) test fixture, to overcome in the prior art
Above mentioned problem, can adapt in two kinds of testpieces sizes, and loading and measure simple and easy to do, convenient operation.
To achieve the above object, the utility model uses following technical scheme：
Four-point bending stress corrosion (cracking) test fixture, including loaded seat, the test fixture being fixed in the loaded seat
Pedestal, is arranged at the loading blocks of test fixture base interior, the sliding block that is arranged at below the test fixture pedestal and is fixed on
Dial gauge below sliding block, wherein：
The first groove is opened up in the middle part of the test fixture pedestal, the middle part of lower end has breach, forms symmetrical two U
The support of type, the upper surface of the support is step, and ecto-entad is followed successively by first surface and second surface, described the
Cross section is opened up on one surface and second surface respectively for semicircular second groove and the 3rd groove.
According to the utility model, the bottom symmetrical of the loading blocks opens up cross section for semicircular 4th groove and the 5th
Groove, second groove, the 3rd groove, the 4th groove and the 5th groove internal diameter it is identical, quartz pushrod is placed in inside respectively, tries
Test part be arranged above and below between two groups of quartz pushrods.
According to the utility model, the center that the loading blocks are embedded at the top of the first groove top, loading blocks opens up spherical
Groove, the center of the test fixture base top surface opens up the first screwed hole, and the load screw that end has ball-shaped end is passed through
First screwed hole is simultaneously inserted in ball recess, the ball-shaped end and the ball recess close fit, in the load screw
It is provided with locking nut.
According to the utility model, the center of the sliding block opens up first through hole, is opened on an end face away from loaded seat
If the second through hole, worn in second through hole and fourth hole, the percentage are provided with locking pin, the face of cylinder of the locking pin
Dial gauge is fixed on sliding block by the measurement bar of table also cross first through hole and fourth hole, and by lock-screw upwards.
According to the utility model, the loaded seat includes bottom plate and the riser being arranged on bottom plate, and the riser is just
In open up guide groove, the sliding block is embedded in guide groove, and the side clearance of the side of sliding block and the guide groove coordinates；
Opens up two the second screwed holes on the end face of sliding block insertion guide groove, the bottom of the guide groove and described the
The third through-hole of two strips is opened up on the corresponding position of two screwed holes, the first fastener is through the third through-hole and inserts
Sliding block is fixed in guide groove in second screwed hole.
Further, the top outwardly convex formation fixed beam of the riser, the both sides of the test fixture pedestal upper end
Open up and open up the 4th screwed hole on corresponding position in pedestal fixing hole, the fixed beam, pedestal is passed through by the second fastener
Fixation of the test fixture pedestal in loaded seat is realized in fixing hole and the 4th screwed hole of insertion.
According to the utility model, connected between the first surface and second surface by curve slope.
According to the utility model, the width of the test fixture pedestal is 14~15mm, and length is 154~155mm, described
Testpieces is cuboid thin plate, and the length of the testpieces of reduced size is 75~85mm, and the length of the testpieces of large-size is
115~125mm.
Compared with prior art, the utility model has following advantageous effects：
Four-point bending stress corrosion (cracking) test fixture of the present utility model, is opened in the upper surface of the support of test fixture pedestal
If the second groove and the 3rd groove, two stations are formed, a sleeve clamp is can be suitably used for two kinds of different testpieces sizes, changed
During testpieces specification, it is only necessary to change a loading blocks, dramatically saves on fixture manufacturing cost；
Load and measure simple and easy to do, convenient operation, and ensure that the test data of two kinds of different dimension test parts
Authenticity, it is ensured that the accuracy of deflection metrology.
Brief description of the drawings
Fig. 1 is overall shaft side figure schematic diagram when the utility model loads larger specification testpieces.
Fig. 2 is Fig. 1 Structure explosion diagram schematic diagram.
Fig. 3 be the utility model load compared with small dimension testpieces when overall shaft side figure schematic diagram.
Fig. 4 is the front view schematic diagram of test fixture base part of the present utility model.
In figure：1- loaded seats, 2- test fixtures pedestal, 3- loading blocks, 4- sliding blocks, 5- dial gauges, 6- quartz pushrods, 7- examinations
Test part, 8- load screws, the fasteners of 9- first, 10 second fasteners, 11- bottom plates, 12- risers, 121- guide grooves, 122- the 3rd
Through hole, 123- fixed beams, the screwed holes of 124- the 4th, the grooves of 21- first, 22- supports, the grooves of 23- second, the grooves of 24- the 3rd,
The screwed holes of 25- first, 26- pedestals fixing hole, 27- first surfaces, 28- second surfaces, the grooves of 31- the 4th, the grooves of 32- the 5th,
33- ball recess, 41- first through hole, the through holes of 42- second, 43- locking pins, 44- fourth holes, 45- lock-screws, 81- lockings
Nut.
Embodiment
Below in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail with specific embodiment.Should
Understand, following examples are merely to illustrate the utility model not for restriction scope of the present utility model.
As depicted in figs. 1 and 2, four-point bending stress corrosion (cracking) test fixture of the present utility model, including loaded seat 1, Gu
Test fixture pedestal 2 in the loaded seat 1, is arranged at the loading blocks 3 inside test fixture pedestal 2, is arranged at institute
State the sliding block 4 of the lower section of test fixture pedestal 2 and be fixed on the dial gauge 5 of the lower section of sliding block 4, wherein：
As shown in Figure 2 and Figure 4, the middle part of the test fixture pedestal 2 opens up the first groove 21, and the middle part of lower end, which has, to be lacked
Mouthful, symmetrical two U-shaped supports 22 are formed, the upper surface of the support 22 is followed successively by first for step ecto-entad
Cross section is opened up on surface 27 and second surface 28, the first surface 27 and second surface 28 respectively recessed for semicircular second
The groove 24 of groove 23 and the 3rd.
By opening up two groups of grooves in the upper surface of the testpieces support of test fixture pedestal, a sleeve clamp is set to be applicable
In two kinds of testpieces sizes, fixture cost is not only saved, and loads and measures simple and easy to do, convenient operation.
The upper surface of support is step, it is ensured that when testpieces size is larger, when quartz pushrod is positioned in the 3rd groove,
Testpieces is deformed upon in the presence of load screw, and its bottom surface will not connect with the horizontal plane of the second groove and the second groove both sides
Touch and influence test effect, so as to ensure that the real effectiveness of test data.
As shown in Fig. 2 according to the utility model, it is semicircular that the bottom symmetricals of the loading blocks 3, which opens up cross section,
Four grooves 31 and the 5th groove 32, second groove 23, the 3rd groove 24, the internal diameter phase of the 4th groove 31 and the 5th groove 32
Together, it is internal to place quartz pushrod 6 respectively, testpieces 7 be arranged above and below between two groups of quartz pushrods.
The top of quartz pushrod in two group of second groove (or the 3rd groove) is contacted with the bottom surface of testpieces, the 4th groove and
The bottom of quartz pushrod in 5th groove is contacted with the top surface of testpieces, forms 4 points of contacts.The biography of power between fixture and testpieces
Pass by quartz pushrod to realize, to prevent intermetallic galvanic corrosion.
According to the utility model, the loading blocks 3 are embedded at the top of the first groove 21, and the center at the top of loading blocks 3 is opened up
Ball recess 33, the center of the top surface of test fixture pedestal 2 opens up the first screwed hole 25, and end has the loading of ball-shaped end
Screw 8 is through the first screwed hole 25 and inserts in ball recess 33, ball-shaped end and the ball recess of the load screw 8
33 close fits, make loading force remain that the loaded surfacer holding with testpieces 7 is vertical in transmittance process, it is ensured that experiment
The authenticity of data.Locking nut 81 is provided with the load screw 8.
According to the utility model, the center of the sliding block 4 opens up first through hole 41, an end face away from loaded seat 1
On open up to wear in the second through hole 42, second through hole 42 and be provided with the 4th on locking pin 43, the face of cylinder of the locking pin 43
Through hole 44, the measurement bar of the dial gauge 5 passes through lock-screw 45 upwards also cross first through hole 41 and fourth hole 44
Dial gauge is fixed on sliding block 4.
According to the utility model, the loaded seat 1 includes bottom plate 11 and the riser 12 being arranged on bottom plate, the riser
12 center opens up guide groove 121, and the sliding block 4 is embedded in guide groove 121, the side of sliding block 4 and the guide groove 121
Side clearance coordinates；
Two the second screwed hole (not shown)s, the guiding are opened up on the end face of the insertion of sliding block 4 guide groove 121
The third through-hole 122 of two strips, the first fastener are opened up on the position corresponding with second screwed hole of the bottom of groove 121
9 (being trip bolt in the present embodiment) pass through the third through-hole 122 and insert in the second screwed hole and be fixed on sliding block 4 and lead
Into groove 121.
Guide groove can limit the position of sliding block in the horizontal direction, and guide groove is protected jointly with sliding block and locking pin and lock-screw
Demonstrate,proving the top of the measurement head of dial gauge can contact with the bottom surface of testpieces, it is ensured that the center line of measurement head and testpieces plane perpendicular,
It further ensure that the real effectiveness of deflection metrology data.
Further, the top outwardly convex formation fixed beam 123 of the riser 12, the upper end of test fixture pedestal 2
Both sides open up and open up the 4th screwed hole 124 on corresponding position in pedestal fixing hole 26, the fixed beam 123, pass through second
Fastener 10 (being trip bolt in the present embodiment) passes through pedestal fixing hole 26 and inserted in the 4th screwed hole 124 and realizes test clamp
Have fixation of the pedestal 2 in loaded seat 1.
According to the utility model, connected between the first surface 27 and second surface 28 by curve slope.
According to the utility model, the width of the test fixture pedestal 2 is 14~15mm, and length is 154~155mm, institute
Testpieces 7 is stated for cuboid thin plate, the length of the testpieces of reduced size is 75~85mm, the length of the testpieces of large-size
For 115~125mm.
Four-point bending stress corrosion (cracking) test fixture of the present utility model loads the specific loading procedure of large-size testpieces
It is as follows：
(1), first test fixture pedestal is fixed in the fixed beam of riser upper end of loaded seat, two on support
Quartz pushrod is put into individual 3rd groove, as depicted in figs. 1 and 2, then testpieces is placed on quartz pushrod, then by loading blocks
It is embedded under crossbeam, adjusts the height of loading blocks, and is set in the 5th groove of loading blocks bottom and the 6th groove and be put into quartz
Rod, makes testpieces gently be fixed on test fixture pedestal, testpieces is not slided.Quartz in two group of the 3rd groove
The top of rod is contacted with the bottom surface of testpieces, and the 4th groove and the bottom of quartz pushrod in the 5th groove and the top surface of testpieces connect
Touch, form 4 points of contacts.
(2), the measurement bar of dial gauge is fixed on sliding block by locking pin and lock-screw, adjustment sliding block and dial gauge
The position of vertical direction, makes the measurement head at the top of measurement bar touch testpieces, and dial gauge is produced certain registration, then slides
Block is fixed on the riser of loaded seat by the first fastener.
(3), turning load screw makes testpieces deform, and the deflection value produced is read by dial gauge, when reaching mesh
When marking amount of deflection, stop loading, while tightening locking nut, prevent from loosening, so far loading procedure is completed.
As shown in figure 3, when the size of testpieces becomes small, need to only change the position of quartz pushrod to the second groove, and more
Change the loading blocks of one piece of reduced size.
Specific embodiment of the utility model is described in detail above, but it is only used as example, the utility model
It is not restricted to particular embodiments described above.To those skilled in the art, it is any that the practicality is equal
Modifications and substitutions are also all among category of the present utility model.Therefore, the institute in the case where not departing from spirit and scope of the present utility model
The impartial conversion and modification of work, should all cover in the range of the utility model.
Claims (8)
1. four-point bending stress corrosion (cracking) test fixture, including loaded seat, the test fixture base being fixed in the loaded seat
Seat, is arranged at the loading blocks of test fixture base interior, the sliding block that is arranged at below the test fixture pedestal and is fixed on cunning
Dial gauge below block, it is characterised in that wherein：
Open up the first groove in the middle part of the test fixture pedestal, the middle part of lower end has breach, formed symmetrical two it is U-shaped
Support, the upper surface of the support is step, and ecto-entad is followed successively by first surface and second surface, first table
Cross section is opened up on face and second surface respectively for semicircular second groove and the 3rd groove；Described two support supporting examinations
Test part.
2. four-point bending stress corrosion (cracking) test fixture according to claim 1, it is characterised in that the bottom of the loading blocks
Semicircular 4th groove and the 5th groove is in the symmetrical cross section that opens up, second groove, the 3rd groove, the 4th groove and the
The internal diameter of five grooves is identical, and quartz pushrod is placed in inside respectively, testpieces be arranged above and below between two groups of quartz pushrods.
3. four-point bending stress corrosion (cracking) test fixture according to claim 1, it is characterised in that the loading blocks are embedded at
Center at the top of first groove top, loading blocks opens up ball recess, and the center of the test fixture base top surface opens up first
Screwed hole, end has the load screw of ball-shaped end through the first screwed hole and inserted in ball recess, the ball-shaped end
With the ball recess close fit, locking nut is provided with the load screw.
4. four-point bending stress corrosion (cracking) test fixture according to claim 1, it is characterised in that open at the center of the sliding block
If first through hole, opened up on an end face away from loaded seat in the second through hole, second through hole and wear locking pin, it is described
Fourth hole is provided with the face of cylinder of locking pin, the measurement bar of the dial gauge is upwards also cross first through hole and four-way
Hole, and dial gauge is fixed on sliding block by lock-screw.
5. four-point bending stress corrosion (cracking) test fixture according to claim 1, it is characterised in that the loaded seat includes
Bottom plate and the riser being arranged on bottom plate, the center of the riser open up guide groove, and the sliding block is embedded in guide groove, sliding block
Side and the guide groove side clearance coordinate；
Two the second screwed holes, the bottom of the guide groove and second spiral shell are opened up on the end face of the sliding block insertion guide groove
The third through-hole of two strips is opened up on the corresponding position of pit, the first fastener passes through the third through-hole and insertion second
Sliding block is fixed in guide groove in screwed hole.
6. four-point bending stress corrosion (cracking) test fixture according to claim 5, it is characterised in that the top of the riser to
Outer lug formation fixed beam, the both sides of the test fixture pedestal upper end open up corresponding in pedestal fixing hole, the fixed beam
The 4th screwed hole is opened up on position, pedestal fixing hole is passed through by the second fastener and inserts in the 4th screwed hole and realize test clamp
Have fixation of the pedestal in loaded seat.
7. four-point bending stress corrosion (cracking) test fixture according to claim 1, it is characterised in that the first surface and
Connected between two surfaces by curve slope.
8. the four-point bending stress corrosion (cracking) test fixture according to any one of claim 1-7, it is characterised in that the examination
The width for testing clamp base is 14~15mm, and length is 154~155mm, and the testpieces is cuboid thin plate, reduced size
The length of testpieces is 75~85mm, and the length of the testpieces of large-size is 115~125mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720022678.9U CN206440555U (en) | 2017-01-09 | 2017-01-09 | Four-point bending stress corrosion (cracking) test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720022678.9U CN206440555U (en) | 2017-01-09 | 2017-01-09 | Four-point bending stress corrosion (cracking) test fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206440555U true CN206440555U (en) | 2017-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720022678.9U Active CN206440555U (en) | 2017-01-09 | 2017-01-09 | Four-point bending stress corrosion (cracking) test fixture |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113251358A (en) * | 2021-05-18 | 2021-08-13 | 南京林业大学 | Intelligent household lighting ceiling lamp convenient to mount and using method |
-
2017
- 2017-01-09 CN CN201720022678.9U patent/CN206440555U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113251358A (en) * | 2021-05-18 | 2021-08-13 | 南京林业大学 | Intelligent household lighting ceiling lamp convenient to mount and using method |
| CN113251358B (en) * | 2021-05-18 | 2023-11-17 | 广州珠江智慧空间有限公司 | Intelligent household illumination ceiling lamp convenient to install and use method |
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