CN204228538U - A kind of three point bending test device for high speed tensile test machine - Google Patents
A kind of three point bending test device for high speed tensile test machine Download PDFInfo
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- CN204228538U CN204228538U CN201420749602.2U CN201420749602U CN204228538U CN 204228538 U CN204228538 U CN 204228538U CN 201420749602 U CN201420749602 U CN 201420749602U CN 204228538 U CN204228538 U CN 204228538U
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- point bending
- supporting seat
- high speed
- test specimen
- speed tensile
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- 238000012360 testing method Methods 0.000 title claims abstract description 106
- 238000013001 point bending Methods 0.000 title claims abstract description 51
- 238000009864 tensile test Methods 0.000 title claims abstract description 25
- 238000005452 bending Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model relates to a kind of three point bending test device for high speed tensile test machine, comprise base, be fixedly installed on described base for placing two holders of test specimen and the loading head for producing loading force to described test specimen, two described holders are symmetricly set on relative two sides of described loading head, particularly, two described holders offer respectively two through holes, described loading head offers through hole, and described test specimen passes described through hole and the two ends of described test specimen are separately fixed in described through hole.Three point bending test device of the present utility model directly realizes dynamic three-point bending by high speed tensile test machine and loads, simple to operate.
Description
Technical field
The utility model belongs to material mechanical performance dynamic test and representational field, for the industry such as automobile, aviation, has and relates to a kind of three point bending test device for high speed tensile test machine.
Background technology
Three point bending test is one of basic skills of mechanical property of materials test, is mainly used in the bending strength measuring fragility and inductile material, also can measures material surface quality simultaneously.And dynamically three point bending test is a kind of test method of measured material test specimen being carried out to dynamic load, the method is used to obtain the data such as power, displacement of material under the effect of different rates load, for verifying the reliability of material model.Because relevant test method is immature, the anxious high speed three point bending test data lacking material of industry, this directly constrains the precision of mechanical property emulation of automotive material under impact load effect and the development progress of automobile new product.Therefore, it is very necessary for obtaining the dynamic mechanical of lightweighting materials under three-point bending state by research technique.
Three point bending test device of the prior art comprises base, be fixedly installed on base for supporting two supporting seats of test test specimen and being positioned at above supporting seat and pressure head for producing loading force to test specimen, two supporting seats are arranged on relative two sides of pressure head.During test, be placed at the two ends of test specimen on two supporting seats respectively, pressure head produces downward acting force by test specimen downward bending to pressing down to test specimen to test specimen, carries out the bending test of test specimen.As by the three point bending test device of prior art on electronic universal tester time, low speed (<500mm/min) three point bending test can be realized, cannot realize middle and high speed load; During for drop hammer impact testing machine, although can realize high speed three-point bending load, due to drop hammer by freely falling body realize to test specimen load, there is energy loss in impact process, cause loading speed to change greatly.At present, industry there is no testing standard and the specification of material high speed three-point bending.
Summary of the invention
Technical problem to be solved in the utility model overcomes the deficiencies in the prior art, provides a kind of three point bending test device for high speed tensile test machine, and this three point bending test device can realize dynamic three point bending test and can realize constant speed loading.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of three point bending test device for high speed tensile test machine, comprise base, be fixedly installed on described base for placing two holders of test specimen and the loading head for producing loading force to described test specimen, two described holders are symmetricly set on relative two sides of described loading head, two described holders offer respectively two through holes, described loading head offers through hole, and described test specimen passes described through hole and the two ends of described test specimen are separately fixed in described through hole.
Each described holder comprises the deck that the supporting seat be fixedly installed on described base and the upper end being arranged on described supporting seat are fixedly connected with described supporting seat, described deck in the side of described supporting seat, offer groove, described supporting seat and described groove form described through hole, and the part between described supporting seat and described deck of described test specimen is positioned at described groove.
The groove bottom of described groove is by one end of close described loading head to the acclivitous inclined-plane, one end away from described loading head, and described one end rounding of the close described loading head of described groove bottom makes described test specimen contact with the chamfer site of described deck.
Described supporting seat offer towards the position of corresponding described groove in the side of described deck the escape groove dodging described test specimen, one end of the close described loading head of described escape groove is provided with the support portion for supporting described test specimen.
The upper end rounding of described support portion makes described test specimen contact with the chamfer site of described support portion.
Described supporting seat is connected by the first bolt with between deck, and between described supporting seat and deck, spacing regulates by described first bolt.
Described supporting seat is fixedly connected with by the second screw bolt and nut with described base, described base offers chute, the bearing of trend of described chute is the bearing of trend of the connecting line of the central point of two described supporting seats, one end of described second bolt is arranged through described supporting seat, chute, nut successively, and described second bolt can be slidably arranged in described chute along described chute.
Described chute offers 2, and each described supporting seat correspondence arranges a described chute.
The lower wall surface of the hole wall of described through hole is the loading surface described test specimen being produced to loading force, and described loading surface is cambered surface.
Described base is provided with for supporting described loading head and adjustable for height support member.
Due to the enforcement of above technical scheme, the utility model compared with prior art has following advantages:
Three point bending test device of the present utility model is combined with high speed tensile test machine, can realize the dynamic three point bending test under basic, normal, high different rates and can realize constant speed loading, simple to operate.
Three point bending test apparatus structure of the present utility model is simple, and low cost of manufacture is safe and reliable.
Accompanying drawing explanation
Fig. 1 is the stereographic map of the utility model three point bending test device;
Fig. 2 is the front view of the utility model three point bending test device;
Fig. 3 is the longitudinal sectional view of the utility model three point bending test device;
Fig. 4 is the stereographic map of the loading head of the utility model three point bending test device;
Fig. 5 is the front view of the loading head of the utility model three point bending test device;
Fig. 6 is the stereographic map of the deck of the utility model three point bending test device;
Fig. 7 is the stereographic map of the supporting seat of the utility model three point bending test device;
Fig. 8 is the stereographic map of the base of the utility model three point bending test device;
In figure: 1, base; 2, supporting seat; 3, deck; 4, loading head; 5, test specimen; 6, through hole; 7, loading surface; 8, escape groove; 9, support portion; 10, groove; 11, chute; 12, support member; 13, the first bolt; 14, the second bolt; 15, nut.
Embodiment
Below in conjunction with Figure of description, the utility model is described further:
As shown in accompanying drawing 1 ~ 8, a kind of three point bending test device for high speed tensile test machine, comprise base 1, be fixedly installed on base 1 for placing two holders of test specimen 5 and the loading head 4 for producing loading force to test specimen 5, two holders are symmetricly set on relative two sides of loading head 4, two holders offer respectively two through holes, loading head 4 offers through hole 6, test specimen 5 passes through hole 6 and the two ends of test specimen 5 are separately fixed in through hole.
Each holder comprises the deck 3 that the supporting seat 2 be fixedly installed on base 1 and the upper end being arranged on supporting seat 2 are fixedly connected with supporting seat 2, the side towards supporting seat 2 of deck 3 offers groove 10, supporting seat 2 and groove 10 form through hole, and the part between supporting seat 2 and deck 3 of test specimen 5 is positioned at groove 10.Particularly, the groove bottom of groove 10 is by one end of close loading head 4 to the acclivitous inclined-plane, one end away from loading head 4, and one end rounding of the close loading head 4 of groove bottom makes test specimen 5 contact with the chamfer site of deck 3.
Supporting seat 2 offer towards the position of respective slot 10 in the side of deck 3 escape groove 8 dodging test specimen 5, one end of the close loading head 4 of escape groove 8 is provided with the support portion 9 for supporting test specimen 8.The upper end rounding of support portion 9 makes test specimen 5 contact with the chamfer site of support portion 9.
Be connected by the first bolt 13 between supporting seat 2 with deck 3, the spacing between deck 3 and supporting seat 2 regulates by the first bolt 13.
Supporting seat 2 is fixedly connected with nut 15 by the second bolt 14 with base 1, base 1 offers chute 11, the bearing of trend of chute 11 is the bearing of trend of the connecting line of the central point of two supporting seats 2, one end of the second bolt 14 is arranged through supporting seat 2, chute 11 and nut 15 successively, and the second bolt 14 can be slidably arranged in chute 11 along chute 11.Particularly, chute 11 offers 2, and each supporting seat 2 correspondence arranges a chute 11.
Base 1 is provided with for supporting loading 4 and adjustable for height support member 12.Support member 12 is positioned at immediately below loading head 4, and support member 12 is bolt.
The principle of work of the utility model three point bending test device:
Before test specimen 5 is tested, three point bending test device installs test specimen 5, then this three point bending test device is arranged on high speed tensile test machine, base 1 is connected with the lower bare terminal end of high speed tensile test machine, the upper end of loading head 4 is connected with the actuator of high speed tensile test machine, base 1 is positioned at immediately below loading head 4 and arranges support member 12.Rotate the first bolt 13 and adjust spacing between deck 3 and supporting seat 2, test specimen 5 is contacted with the chamfer site of deck 3, rotary support member 12 regulates the height of loading head 4, is adjusted to by the height of loading head 4 and loading surface 7 is just contacted with the downside of test specimen 5.
During test, the actuator of high speed tensile test machine pulls loading head 4 up to move, and loading surface 7 pairs of test specimens 5 of through hole 6 produce acting force upwards by test specimen 5 upwards bending, carry out the bending test of test specimen 5.Test specimen 5 is in BENDING PROCESS, the position that test specimen 5 contacts with the chamfer site of deck 3 is limited in the groove 10 of deck 3, can not slide, and the end of test specimen 5 is bent downwardly, in the escape groove 8 entering supporting seat 2 and not do not contact with other positions of supporting seat 2 or miscellaneous part, complete correct three-point bending state.
Three point bending test device of the present utility model has following beneficial effect:
Three point bending test device of the present utility model directly realizes dynamic three-point bending by high speed tensile test machine and loads, simple to operate;
Three point bending test device of the present utility model is combined with high speed tensile test machine, can realize the dynamic three point bending test under basic, normal, high different rates;
Three point bending test apparatus structure of the present utility model is simple, and low cost of manufacture, reliability is high.
Above the utility model is described in detail; its object is to allow the personage being familiar with this art can understand content of the present utility model and be implemented; protection domain of the present utility model can not be limited with this; all equivalences done according to Spirit Essence of the present utility model change or modify, and all should be encompassed in protection domain of the present utility model.
Claims (10)
1. the three point bending test device for high speed tensile test machine, comprise base, be fixedly installed on described base for placing two holders of test specimen and the loading head for producing loading force to described test specimen, two described holders are symmetricly set on relative two sides of described loading head, it is characterized in that: two described holders offer respectively two through holes, described loading head offers through hole, and described test specimen passes described through hole and the two ends of described test specimen are separately fixed in described through hole.
2. the three point bending test device for high speed tensile test machine according to claim 1, it is characterized in that: each described holder comprises the deck that the supporting seat be fixedly installed on described base and the upper end being arranged on described supporting seat are fixedly connected with described supporting seat, described deck in the side of described supporting seat, offer groove, described supporting seat and described groove form described through hole, and the part between described supporting seat and described deck of described test specimen is positioned at described groove.
3. the three point bending test device for high speed tensile test machine according to claim 2, it is characterized in that: the groove bottom of described groove is by one end of close described loading head to the acclivitous inclined-plane, one end away from described loading head, and described one end rounding of the close described loading head of described groove bottom makes described test specimen contact with the chamfer site of described deck.
4. the three point bending test device for high speed tensile test machine according to claim 2, it is characterized in that: described supporting seat offer towards the position of corresponding described groove in the side of described deck the escape groove dodging described test specimen, one end of the close described loading head of described escape groove is provided with the support portion for supporting described test specimen.
5. the three point bending test device for high speed tensile test machine according to claim 4, is characterized in that: the upper end rounding of described support portion makes described test specimen contact with the chamfer site of described support portion.
6. the three point bending test device for high speed tensile test machine according to claim 2, is characterized in that: described supporting seat is connected by the first bolt with between deck, and between described supporting seat and deck, spacing regulates by described first bolt.
7. the three point bending test device for high speed tensile test machine according to claim 1, it is characterized in that: described supporting seat is fixedly connected with by the second screw bolt and nut with described base, described base offers chute, the bearing of trend of described chute is the bearing of trend of the connecting line of the central point of two described supporting seats, one end of described second bolt is arranged through described supporting seat, chute, nut successively, and described second bolt can be slidably arranged in described chute along described chute.
8. the three point bending test device for high speed tensile test machine according to claim 7, is characterized in that: described chute offers 2, and each described supporting seat correspondence arranges a described chute.
9. the three point bending test device for high speed tensile test machine according to claim 1, is characterized in that: the lower wall surface of the hole wall of described through hole is the loading surface described test specimen being produced to loading force, and described loading surface is cambered surface.
10. the three point bending test device for high speed tensile test machine according to claim 1, is characterized in that: described base is provided with for supporting described loading head and adjustable for height support member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420749602.2U CN204228538U (en) | 2014-12-03 | 2014-12-03 | A kind of three point bending test device for high speed tensile test machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420749602.2U CN204228538U (en) | 2014-12-03 | 2014-12-03 | A kind of three point bending test device for high speed tensile test machine |
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| Publication Number | Publication Date |
|---|---|
| CN204228538U true CN204228538U (en) | 2015-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420749602.2U Expired - Fee Related CN204228538U (en) | 2014-12-03 | 2014-12-03 | A kind of three point bending test device for high speed tensile test machine |
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| CN (1) | CN204228538U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104406863A (en) * | 2014-12-03 | 2015-03-11 | 清华大学苏州汽车研究院（相城） | Three-point bending test device and test method for high-speed tensile test machine |
| CN105842058A (en) * | 2016-05-13 | 2016-08-10 | 重庆交通大学 | Asphalt mixture beam specimen bending fatigue test fixture |
-
2014
- 2014-12-03 CN CN201420749602.2U patent/CN204228538U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104406863A (en) * | 2014-12-03 | 2015-03-11 | 清华大学苏州汽车研究院（相城） | Three-point bending test device and test method for high-speed tensile test machine |
| CN104406863B (en) * | 2014-12-03 | 2017-06-06 | 清华大学苏州汽车研究院（相城） | A kind of three point bending test device and test method for high speed tensile test machine |
| CN105842058A (en) * | 2016-05-13 | 2016-08-10 | 重庆交通大学 | Asphalt mixture beam specimen bending fatigue test fixture |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20150325 Termination date: 20211203 |