CN205067241U - Three -point bending test device - Google Patents
Three -point bending test device Download PDFInfo
- Publication number
- CN205067241U CN205067241U CN201520751937.2U CN201520751937U CN205067241U CN 205067241 U CN205067241 U CN 205067241U CN 201520751937 U CN201520751937 U CN 201520751937U CN 205067241 U CN205067241 U CN 205067241U
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- China
- Prior art keywords
- fixture block
- test
- lower fixture
- clamp splice
- point bending
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Abstract
The utility model provides a three -point bending test device, including test bench, the last guide rail that is equipped with of test bench, the symmetry is equipped with the test piece and presss from both sides tight supporting mechanism on the guide rail, each test piece presss from both sides tight supporting mechanism and includes the slip table respectively, one end of the support rack is hinged at the support, lean on the piece, go up clamp splice and lower clamp splice, slip table and guide rail sliding fit, the support frame is fixed on the slip table, the support frame is equipped with bellied brace table, the brace table top surface is the arc surface of evagination, fix on the support frame by the piece, be equipped with the support inclined plane by the piece, the both ends of test piece are respectively through last, lower clamp splice centre gripping, the clamp splice lower part is equipped with the circular arc holding surface of indent down, lower clamp splice lower part still is equipped with the cambered surface of downward bulge and leans on the platform, the circular arc holding surface of clamp splice is supported by the brace table down, the arc of clamp splice presses on the support inclined plane that leans on the piece by the platform down. The utility model discloses can warp the tight position of clamp of in time adjusting upper and lower clamp splice according to the material, effectively avoid the test piece to produce in upper and lower clamp splice centre gripping department and bend, eliminate the drawback that influences the tentation data accuracy because of the test piece three -point bending.
Description
Technical field
The utility model relates to a kind of mechanical property test equipment, particularly can avoid test specimen that the bending three point bending test device of three breaks occurs.
Background technology
Three point bending test is the method for testing that test material bears bending ductility deformability, three point bending test normally completes on three point bending test machine, " force-displacement curve " that process of the test generates is the key reference data whether checking product piece or material be qualified, in test, the accuracy of data is particularly important, and in the accuracy of test figure and test process, the state of test specimen stress deformation is closely related.At present, when three point bending test does to axostylus axostyle class test specimen in some manufacturing enterprises, test specimen two ends are clamped by upper and lower fixture block, and lower fixture block and test-bed are fixed, and power hammer is depressed in the middle part of test specimen, make test specimen produce V distortion.Because test specimen two ends are fixedly clamped by upper and lower fixture block, be easy to the stressed of test specimen and produce break in process of the test, three breaks that namely test specimen presents non-V-arrangement bend, and this case of bending directly can have influence on the accuracy of test figure.
Utility model content
The purpose of this utility model is the drawback for prior art, and three breaks are bending, warranty test data three point bending test device accurately to provide one can prevent test specimen from producing.
Problem described in the utility model realizes with following technical proposals:
A kind of three point bending test device, comprise test-bed, test-bed is provided with two guide rails, guide rail is arranged with two cover test specimen clamping brace mechanisms, each cover test specimen clamping brace mechanism comprises slide unit respectively, bracing frame, by block, upper fixture block and lower fixture block, described slide unit coordinates with slide, bracing frame is fixed on slide unit, bracing frame is provided with protruding brace table, brace table end face is the arc surface of evagination, be fixed on bracing frame by block, supporting oblique surface is provided with by block, the two ends of test specimen are respectively through upper, lower fixture block clamping, lower fixture block bottom is provided with the circle arc support face of indent, lower fixture block bottom is also provided with the cambered surface protruded downwards and leans on platform, the circle arc support face of lower fixture block is supported by brace table, the arc of lower fixture block presses on the supporting oblique surface leaning on block by platform.
Above-mentioned three point bending test device, described upper fixture block, lower fixture block are respectively equipped with involutory surface clamping surface, and the shape that the involutory surface clamping surface of upper and lower fixture block encloses is mated with test specimen cross-sectional profiles, connects between upper fixture block, lower fixture block through screw.
Above-mentioned three point bending test device, each guide rail two ends are provided with guide rail limiting plate.
Above-mentioned three point bending test device, described test-bed two ends are provided with hoisting device.
For test specimen in existing three point bending test device testing process, the utility model easily occurs that 3 problems bent are improved, the upper and lower fixture block at clamping test pieces two ends is improved to indexable floating connection with the connected mode between bracing frame by being fixedly connected with, and the bracing frame be simultaneously arranged on test-bed can slide by opposite rail.Said structure, when in process of the test, power hammer presses down and causes test piece deformation, bracing frame can move along guide rail on the one hand, lower fixture block can relatively rotate around bracing frame on the other hand, thus the clamping orientation of upper and lower fixture block is adjusted in time according to material deformation, effectively avoid test specimen to produce bending in clamping place of upper and lower fixture block, ensure test specimen v-shaped bending, eliminate the drawback affecting test figure accuracy because of test specimen three-point bending.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the partial enlarged view at Figure 1A place;
Fig. 3 is the schematic diagram of upper and lower fixture block clamping test pieces.
In figure, each list of reference numerals is: 1, test-bed, 2, hoisting device, 3, guide rail limiting plate, 4, guide rail, 5, slide unit, 6, by block, 6-1, supporting oblique surface, 7, upper fixture block, 8, lower fixture block, 8-1, cambered surface are by platform, 8-2, circle arc support face, 9, bracing frame, 9-1, brace table, 10, power hammer, 11, test specimen.
Embodiment
Referring to Fig. 1, the utility model comprises test-bed 1, test-bed is fixed two guide rails 4, the both sides of guide rail is arranged with two cover test specimen clamping brace mechanisms.The two ends of test-bed are provided with for carrying the hoisting device 2 sling.Guide rail limiting plate 3 is distributed with at the two ends of every bar guide rail.
Referring to Fig. 1, Fig. 2, often overlap test specimen clamping brace mechanism comprise respectively slide unit 5, bracing frame 9, by block 6, upper fixture block 7 and lower fixture block 8.Slide unit is positioned on guide rail, with slide and coordinates.Bracing frame is fixed on slide unit, and bracing frame is provided with protruding brace table 9-1, and brace table end face is the arc surface of evagination.Describedly be fixed on brace table side by block, the side by the corresponding brace table of block is provided with supporting oblique surface 6-1.Detected test specimen 11 two ends clamp through upper and lower fixture block respectively.Lower fixture block bottom is provided with the circle arc support face 8-2 of indent, and lower fixture block is also provided with the cambered surface protruded downwards and depends on platform 8-1, and cambered surface is arc surface by the face that platform is corresponding with supporting oblique surface.The circle arc support face of lower fixture block is supported by brace table, and the cambered surface of lower fixture block leans on the arc surface of platform to press on the supporting oblique surface leaning on block.
Referring to Fig. 3, upper fixture block 7, lower fixture block 8 are provided with and are respectively equipped with involutory clamping surface, and after upper and lower fixture block is involutory, the shape enclosed by the involutory clamping surface of upper and lower fixture block is mated with test specimen cross-sectional profiles, connects between upper fixture block, lower fixture block through screw.During detection, test specimen 11 is clamped between upper fixture block, lower fixture block, and upper fixture block, lower fixture block connect through screw.
When the utility model carries out three point bending test to detection test specimen, the upper and lower fixture block of two covers is clamped in respectively the two ends of test specimen 11; The cambered surface of lower fixture block is placed to brace table by platform and leans between block, by brace table with by fixture block under block common support; Power hammer 10 applies pressure in the middle part of test specimen, test specimen deforms under pressure, progressively deformation slide unit with test specimen moves on guide rail, with fixture block, upper fixture block relative support frame rotate at present, according to test piece deformation adjustment clamping direction, material is effectively avoided in clamping place, bending to occur, the accuracy of warranty test data.
Claims (4)
1. a three point bending test device, comprise test-bed (1), test-bed is provided with two guide rails (4), guide rail is arranged with two cover test specimen clamping brace mechanisms, it is characterized in that: each cover test specimen clamping brace mechanism comprises slide unit (5) respectively, bracing frame (9), by block (6), upper fixture block (7) and lower fixture block (8), described slide unit coordinates with slide, bracing frame is fixed on slide unit, bracing frame is provided with protruding brace table (9-1), brace table end face is the arc surface of evagination, be fixed on bracing frame by block, supporting oblique surface (6-1) is provided with by block, the two ends of test specimen (11) are respectively through upper, lower fixture block clamping, lower fixture block bottom is provided with the circle arc support face (8-2) of indent, lower fixture block bottom is also provided with the cambered surface protruded downwards and leans on platform (8-1), the circle arc support face of lower fixture block is supported by brace table, the arc of lower fixture block presses on the supporting oblique surface leaning on block by platform.
2. three point bending test device according to claim 1, it is characterized in that, described upper fixture block, lower fixture block are respectively equipped with involutory clamping surface, and the shape that the involutory clamping surface of upper and lower fixture block encloses is mated with test specimen cross-sectional profiles, connects between upper fixture block, lower fixture block through screw.
3. three point bending test device according to claim 2, is characterized in that, each guide rail two ends are provided with guide rail limiting plate (3).
4. three point bending test device according to claim 2, is characterized in that, described test-bed two ends are provided with hoisting device (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520751937.2U CN205067241U (en) | 2015-09-25 | 2015-09-25 | Three -point bending test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520751937.2U CN205067241U (en) | 2015-09-25 | 2015-09-25 | Three -point bending test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205067241U true CN205067241U (en) | 2016-03-02 |
Family
ID=55393781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520751937.2U Active CN205067241U (en) | 2015-09-25 | 2015-09-25 | Three -point bending test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205067241U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108714945A (en) * | 2018-07-13 | 2018-10-30 | 重庆银木莊美装家具有限责任公司 | A kind of cabinet-wood bending apparatus |
| CN108896395A (en) * | 2018-07-16 | 2018-11-27 | 常州市新创智能科技有限公司 | Sandwich bending property and endurance test device |
-
2015
- 2015-09-25 CN CN201520751937.2U patent/CN205067241U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108714945A (en) * | 2018-07-13 | 2018-10-30 | 重庆银木莊美装家具有限责任公司 | A kind of cabinet-wood bending apparatus |
| CN108896395A (en) * | 2018-07-16 | 2018-11-27 | 常州市新创智能科技有限公司 | Sandwich bending property and endurance test device |
| CN108896395B (en) * | 2018-07-16 | 2023-09-29 | 常州市新创智能科技有限公司 | Sandwich structure bending property and fatigue degree test device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |