CN108896395A - Sandwich bending property and endurance test device - Google Patents
Sandwich bending property and endurance test device Download PDFInfo
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- CN108896395A CN108896395A CN201810774235.4A CN201810774235A CN108896395A CN 108896395 A CN108896395 A CN 108896395A CN 201810774235 A CN201810774235 A CN 201810774235A CN 108896395 A CN108896395 A CN 108896395A
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- fixture block
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- rocker arm
- bending property
- hole location
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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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention relates to sandwich experimental rig technical fields, and in particular to a kind of sandwich bending property and endurance test device include at least：Loading device is provided with the first hole location passed through for sample on loading device；And two rotation supports of loading device two sides are symmetrically disposed on, rotation support includes two first rocker arms, and the first rocker arm bottom and table top are rotatablely connected；It further include the first gripping block connected at the top of two first rocker arms, wherein the first gripping block both ends and the first rocker arm are rotatablely connected, and are provided with the second hole location passed through for sample in the first gripping block.In the present invention, by the once mounting of sample, the test of sandwich bending property and fatigue strength can be achieved at the same time, realize the performance evaluation of its synthesis, effectively saved testing equipment and human cost.
Description
Technical field
The present invention relates to sandwich experimental rig technical fields, and in particular to a kind of sandwich bending property and fatigue
Spend experimental rig.
Background technique
According to《Test method for flexural properties of sandwich constructions》The regulation of GB/T 1456-2005 need to carry out sandwich curved
Bent performance test, test method use three point bending test device, as shown in Figure 1, including load 1, two seat cushion of pressure head cushion block
The both ends of sample 3 are placed on two support cushion blocks 4 first, then pass through during test by block 4 and displacement sensor 6
Load pressure head cushion block 1 presses to the middle part of sample 3, while the squeezing because of load pressure head cushion block 1 by the measurement of displacement sensor 6
The deformation quantity pressed and generated, so that it is determined that the bending property of sandwich.
Above-mentioned experimental rig test result is single, need to be by additional when also needing to carry out endurance test to sandwich
Experimental rig carry out, increase the operation complexity of sandwich Evaluation on Total Performance.
In view of the above shortcomings, the designer is actively subject to research and innovation, to found a kind of sandwich bendability
It can be made with more the utility value in industry with endurance test device.
Summary of the invention
The test of sandwich bending property and fatigue strength can be achieved at the same time in experimental rig provided in the present invention.
The present invention the technical solution to solve the technical problem is that：
In a first aspect, sandwich bending property and endurance test device, include at least：
Loading device is provided with the first hole location passed through for sample on loading device；
And two rotation supports of loading device two sides are symmetrically disposed on, rotation support includes two first rocker arms, the first rocker arm bottom
Portion and table top are rotatablely connected；It further include the first gripping block connected at the top of two first rocker arms, wherein the first gripping block both ends and the
One rocker arm is rotatablely connected, and is provided with the second hole location passed through for sample in the first gripping block.
Further, loading device includes load pressure head and load fixing head, and load pressure head connection power source and load are solid
Determine head, the first hole location is set in load fixing head；
Wherein, it loads and is also symmetrically arranged with two loading activity heads about load fixing head on pressure head, loading activity head includes two the
Two rocker arms, the second rocker arm and load pressure head rotation connection；It further include the second gripping block for connecting two second rocker arm bottoms, wherein
Second gripping block both ends and the second rocker arm are rotatablely connected, and are provided with the third hole location passed through for sample in the second gripping block.
Further, two first rocker arms are rotatablely connected with the first mounting plate, and the first mounting plate bottom is provided with T-type convex block
Structure is provided with the T-type groove being adapted with T-type projection cube structure on table top, and the first mounting plate is moved along T-type groove, thus real
Now two first mounting plates is close to each other or separate.
Further, two second rocker arms are rotatablely connected with the second mounting plate, are provided with T-type convex block at the top of the second mounting plate
Structure is provided with the T-type groove being adapted with T-type projection cube structure on table top, and the second mounting plate is moved along T-type groove, thus real
Now two second mounting plates is close to each other or separate.
Further, the second gripping block includes the second upper fixture block and the second lower fixture block, wherein under the second upper fixture block and second
Fixture block alternative one and the second rocker arm are rotatablely connected, and another one is connect by the first connector with alternative one, and third hole location is set
It is placed between the second upper fixture block and the second lower fixture block.
Further, buffer layer is provided on the face contacted on third hole location inner wall with sample upper and lower part.
Further, the first gripping block includes the first upper fixture block and the first lower fixture block, wherein under the first upper fixture block and first
Fixture block alternative one and the first rocker arm are rotatablely connected, and another one is connect by the second connector with alternative one, and the second hole location is set
It is placed between the first upper fixture block and the first lower fixture block.
Further, buffer layer is provided on the face contacted on the second hole location inner wall with sample upper and lower part.
After above-mentioned technical proposal, the present invention has beneficial effect below：
Sample is sequentially passed through one first at work by sandwich bending property and endurance test device in the present invention
The first hole location in the second hole location, loading device on first rocker arm and the second hole location on another first rocker arm, thus real
The fixation of existing sample then drives loading device to pressing in the middle part of sample, can realize through the above way by power source
The test of sample bending property；Loading device is driven to pump using power source, so that sample is bent repeatedly, so as to
Realize the endurance test of sample.In the above-described embodiments by the once mounting of sample, the performance evaluation of its synthesis is realized,
Testing equipment and human cost are effectively saved.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The some embodiments recorded in application, for those of ordinary skill in the art, without creative efforts,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of three point bending test device in background technique；
Fig. 2 is the front view of sandwich bending property and endurance test device in the present invention；
Fig. 3 is the side view of Fig. 2；
Fig. 4 is the top view of Fig. 2；
Fig. 5 is the axonometric drawing of Fig. 2；
Fig. 6 is the cross-sectional view in Fig. 2 at B-B；
Fig. 7 is the cross-sectional view in Fig. 2 at A-A；
Appended drawing reference：Load pressure head cushion block 1, support cushion block 4, sample 3, displacement sensor 6, loading device 7, load pressure head 71,
Load fixing head 72, the second rocker arm 73, the second gripping block 74, the second upper fixture block 74a, the second lower fixture block 74b, the first connector
74c, the second mounting plate 75, buffer layer 76, the 8, first rocker arm 81 of rotation support, the first gripping block 82, the first upper fixture block 82a, the
One lower fixture block 82b, the second connector 82c, the first mounting plate 83, table top 9.
Specific embodiment
In order to make those skilled in the art better understand the technical solutions in the application, below in conjunction with the application reality
The attached drawing in example is applied, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described implementation
Example is merely a part but not all of the embodiments of the present application.Based on the embodiment in the application, this field is common
The application protection all should belong in technical staff's every other embodiment obtained without making creative work
Range.
As shown in figures 2 and 5, sandwich bending property and endurance test device, include at least：Loading device 7, load
The first hole location passed through for sample 3 is provided on device 7；And two rotation supports 8 of 7 two sides of loading device are symmetrically disposed on,
Rotation support 8 includes two first rocker arms 81, and 81 bottom of the first rocker arm and table top 9 are rotatablely connected；It further include two first rocker arms of connection
First gripping block 82 at 81 tops, wherein 82 both ends of the first gripping block and the first rocker arm 81 are rotatablely connected, in the first gripping block 82
It is provided with the second hole location passed through for sample 3.In the above embodiment of the present invention, when sandwich bending property and fatigue strength are tried
Sample 3 at work, is sequentially passed through the second hole location on first rocker arm 81, on loading device 7 by experiment device first
The second hole location in one hole location and another first rocker arm 81 is then driven by power source to realize the fixation of sample 3
Loading device 7 in the middle part of sample 3 to pressing, in the process, with the change of 3 both ends angle of sample, the first rocker arm 81 around
It is rotated with the tie point of table top 9, so that the adjustment of the first gripping block 82 and 3 adaptability of sample, can avoid in this way
The sample 3 due to caused by part force of first gripping block 82 to sample 3 deforms, while also can avoid each structure sheaf of sample 3
Between dislocation, when sample 3 is the structures such as cellular board, it is ensured that the integrality of structure can realize sample 3 through the above way
The test of bending property；Loading device 7 is driven to pump using power source, so that sample 3 is bent repeatedly, so as to reality
The endurance test of existing sample 3.The once mounting for passing through sample 3 in the above-described embodiments, realizes the performance evaluation of its synthesis,
Testing equipment and human cost are effectively saved.
As the preferred of above-described embodiment, loading device 7 includes load pressure head 71 and load fixing head 72, loads pressure head 71
Power source and load fixing head 72 are connected, the first hole location is set in load fixing head 72；Wherein, load pressure head 71 on also about
Load fixing head 72 is symmetrically arranged with two loading activity heads, and loading activity head includes two second rocker arms 73, the second rocker arm 73 with plus
Pressure head 71 is carried to be rotatablely connected；It further include the second gripping block 74 for connecting two second rocker arms, 73 bottom, wherein the second 74 liang of gripping block
End is rotatablely connected with the second rocker arm 73, is provided with the third hole location passed through for sample 3 in the second gripping block 74.Because sample 3 has
Have certain length, and the first gripping block 81 does not clamp sample 3, only by the support of two o'clock so that the stress of sample 3 not
Uniformly, it is easy that falling off for sample 3 occurs during the test because of the unstable of fixation, so that the evaluation of its performance is influenced,
By the setting of loading activity head, so that sample 3 increases two supporting points during test, specifically, when sample 3 is curved
Qu Shi, with the angle change of sample 3, the second rocker arm 73 is rotated around the junction with load pressure head 71, while the second gripping block
74 rotate around with the junction of the second rocker arm 73, to remain the angle between the second rocker arm 73 and sample 3.
As the preferred of above-described embodiment, two first rocker arms 81 are rotatablely connected with the first mounting plate 83, the first mounting plate
83 bottoms are provided with T-type projection cube structure, and the T-type groove being adapted with T-type projection cube structure, the first mounting plate are provided on table top 9
83 move along T-type groove, to realize the close to each other or separate of two first mounting plates 83.Make two first through the above way
The distance between gripping block 81 can be adjusted according to actual needs, to be adapted to the test requirements document of different length sample 3.
As the preferred of above-described embodiment, two second rocker arms 73 are rotatablely connected with the second mounting plate 75, the second mounting plate
75 tops are provided with T-type projection cube structure, and the T-type groove being adapted with T-type projection cube structure, the second mounting plate are provided on table top 9
75 move along T-type groove, to realize the close to each other or separate of two second mounting plates 75.It equally may make through the above way
The distance between two second gripping blocks 74 can be adjusted according to actual needs, to be adapted to the test of different length sample 3
It is required that.
As the preferred of above-described embodiment, as shown in fig. 6, the second gripping block 74 includes under the second upper fixture block 74a and second
Fixture block 74b, wherein the second upper fixture block 74a and the second lower fixture block 74b alternative one and the second rocker arm 73 are rotatablely connected, another one
Connect by the first connector 74c with alternative one, third hole location be set to the second upper fixture block 74a and the second lower fixture block 74b it
Between.By the way that the second gripping block 74 is arranged to separate structure, its difficulty of processing is effectively reduced, while passing through the first connector
74c connection the second upper fixture block 74a and the second lower fixture block 74b, may make the height-adjustable of third hole location, to be adaptable to more
The sample 3 of kind thickness is tested, and the versatility of device is increased.Wherein, on third hole location inner wall with 3 upper and lower part of sample
Buffer layer 76 is provided on the face of contact.In the present embodiment, by the setting of buffer layer 76, so that the second gripping block 74 is to examination
When sample 3 is squeezed, extruding force flexibility can be avoided the damage to 3 surface of sample, wherein PU pad can be used in buffer layer 76
Layer, is fixed on third hole location inner wall by way of stickup.
As the preferred of above-described embodiment, as shown in fig. 7, the first gripping block 82 includes the firstth upper fixture block 82a and first
Lower fixture block 82b, wherein the first upper fixture block 82a and the first lower fixture block 82b alternative one and the first rocker arm 81 are rotatablely connected, another
Person is connect by the second connector 82c with alternative one, and the second hole location is set to the first upper fixture block 82a and the first lower fixture block 82b
Between.By the way that the first gripping block 82 is arranged to separate structure, its difficulty of processing is effectively reduced, while passing through the second connector
82c connection the first upper fixture block 82a and the first lower fixture block 82b, may make the height-adjustable of the second hole location.Likewise, this implementation
Buffer layer 76 is provided on the face contacted on the second hole location inner wall with 3 upper and lower part of sample in example.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (8)
1. sandwich bending property and endurance test device, which is characterized in that include at least：
Loading device（7）, the loading device（7）On be provided with for the sample（3）The first hole location passed through；
And it is symmetrically disposed on the loading device（7）Two rotation supports of two sides（8）, the rotation support（8）Including two
One rocker arm（81）, first rocker arm（81）Bottom and table top（9）Rotation connection；It further include two first rocker arms of connection（81）Top
The first gripping block（82）, wherein first gripping block（82）Both ends and first rocker arm（81）Rotation connection, described the
One gripping block（82）On be provided with for the sample（3）The second hole location passed through.
2. sandwich bending property according to claim 1 and endurance test device, which is characterized in that the load
Device（7）Including loading pressure head（71）With load fixing head（72）, the load pressure head（71）Connect power source and the load
Fixing head（72）, first hole location is set to the load fixing head（72）On；
Wherein, the load pressure head（71）On also about the load fixing head（72）It is symmetrically arranged with two loading activity heads, institute
Stating loading activity head includes two second rocker arms（73）, second rocker arm（73）With the load pressure head（71）Rotation connection；Also
Including connecting two second rocker arms（73）Second gripping block of bottom（74）, wherein second gripping block（74）Both ends with
Second rocker arm（73）Rotation connection, second gripping block（74）On be provided with for the sample（3）The third hole passed through
Position.
3. sandwich bending property according to claim 1 and endurance test device, which is characterized in that two described
One rocker arm（81）With the first mounting plate（83）Rotation connection, first mounting plate（83）Bottom is provided with T-type projection cube structure,
The table top（9）On be provided with the T-type projection cube structure be adapted T-type groove, first mounting plate（83）Along the T
Type groove is mobile, to realize two first mounting plates（83）It is close to each other or separate.
4. sandwich bending property according to claim 2 and endurance test device, which is characterized in that two described
Two rocker arms（73）With the second mounting plate（75）Rotation connection, second mounting plate（75）Top is provided with T-type projection cube structure,
The table top（9）On be provided with the T-type projection cube structure be adapted T-type groove, second mounting plate（75）Along the T
Type groove is mobile, to realize two second mounting plates（75）It is close to each other or separate.
5. sandwich bending property according to claim 2 or 4 and endurance test device, which is characterized in that described
Second gripping block（74）Including the second upper fixture block（74a）With the second lower fixture block（74b）, wherein second upper fixture block（74a）With
Second lower fixture block（74b）Alternative one and second rocker arm（73）Rotation connection, another one pass through the first connector（74c）With
The alternative one connection, the third hole location are set to second upper fixture block（74a）With the second lower fixture block（74b）Between.
6. sandwich bending property according to claim 5 and endurance test device, which is characterized in that the third
On hole location inner wall with the sample（3）Buffer layer is provided on the face of upper and lower part contact（76）.
7. sandwich bending property according to claim 1 or 3 and endurance test device, which is characterized in that described
First gripping block（82）Including the first upper fixture block（82a）With the first lower fixture block（82b）, wherein first upper fixture block（82a）With
First lower fixture block（82b）Alternative one and first rocker arm（81）Rotation connection, another one pass through the second connector（82c）With
The alternative one connection, second hole location are set to first upper fixture block（82a）With the first lower fixture block（82b）Between.
8. sandwich bending property according to claim 7 and endurance test device, which is characterized in that described second
On hole location inner wall with the sample（3）Buffer layer is provided on the face of upper and lower part contact（76）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810774235.4A CN108896395B (en) | 2018-07-16 | 2018-07-16 | Sandwich structure bending property and fatigue degree test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810774235.4A CN108896395B (en) | 2018-07-16 | 2018-07-16 | Sandwich structure bending property and fatigue degree test device |
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| Publication Number | Publication Date |
|---|---|
| CN108896395A true CN108896395A (en) | 2018-11-27 |
| CN108896395B CN108896395B (en) | 2023-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810774235.4A Active CN108896395B (en) | 2018-07-16 | 2018-07-16 | Sandwich structure bending property and fatigue degree test device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110618041A (en) * | 2019-10-30 | 2019-12-27 | 攀钢集团攀枝花钢铁研究院有限公司 | Bending integrated testing machine |
| CN113776958A (en) * | 2021-09-18 | 2021-12-10 | 中车株洲电力机车有限公司 | Roller type bending device for bending test |
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| CN107917844A (en) * | 2018-01-16 | 2018-04-17 | 天津工业大学 | A kind of 3 points of composite material, four-point bending fatigue universal test fixture |
| CN208488332U (en) * | 2018-07-16 | 2019-02-12 | 常州市新创智能科技有限公司 | Sandwich bending property and endurance test device |
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| JPH01173850A (en) * | 1987-12-28 | 1989-07-10 | Ngk Spark Plug Co Ltd | Repetitive fatigue testing device |
| CN101561380A (en) * | 2009-05-18 | 2009-10-21 | 首钢总公司 | Device and method for repeated bending tests under complex load |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110618041A (en) * | 2019-10-30 | 2019-12-27 | 攀钢集团攀枝花钢铁研究院有限公司 | Bending integrated testing machine |
| CN113776958A (en) * | 2021-09-18 | 2021-12-10 | 中车株洲电力机车有限公司 | Roller type bending device for bending test |
| CN113776958B (en) * | 2021-09-18 | 2024-02-06 | 中车株洲电力机车有限公司 | Roller bending device for bending test |
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|---|---|
| CN108896395B (en) | 2023-09-29 |
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