CN114184494B - A bending test fixture for a carbon fiber wrapped cantilever beam - Google Patents
A bending test fixture for a carbon fiber wrapped cantilever beam Download PDFInfo
- Publication number
- CN114184494B CN114184494B CN202111395661.5A CN202111395661A CN114184494B CN 114184494 B CN114184494 B CN 114184494B CN 202111395661 A CN202111395661 A CN 202111395661A CN 114184494 B CN114184494 B CN 114184494B
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- China
- Prior art keywords
- fixture
- cantilever beam
- support column
- carbon fiber
- bending test
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- 238000012360 testing method Methods 0.000 title claims abstract description 40
- 238000005452 bending Methods 0.000 title claims abstract description 23
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 15
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 15
- 230000002787 reinforcement Effects 0.000 claims 1
- 238000004804 winding Methods 0.000 abstract description 8
- 230000003028 elevating effect Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000011056 performance test Methods 0.000 abstract 1
- 230000003014 reinforcing effect Effects 0.000 description 9
- 230000001105 regulatory effect Effects 0.000 description 4
- 238000010008 shearing Methods 0.000 description 3
- 239000003381 stabilizer Substances 0.000 description 3
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
Classifications
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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
- G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
-
- 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
- G01N3/02—Details
-
- 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
- G01N3/02—Details
- G01N3/04—Chucks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0023—Bending
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention provides a bending test fixture for a carbon fiber winding cantilever beam, and mainly relates to the field of performance test of cantilever beams. The utility model provides a bending test fixture of carbon fiber winding cantilever beam, includes left sill, right sill, respectively fixedly connected with front bezel, well roof beam, back beam between left side sill and the right sill, middle part fixed mounting is indulged pillar one on the left side sill, right side sill middle part fixed mounting is indulged pillar two, respectively fixed mounting has the support column on front bezel, the back beam, fixed mounting has work platform on the support column, it has the fixing base to indulge fixed mounting on the pillar one, it installs the elevating seat to indulge one side on the pillar two. The cantilever beam test fixture has the beneficial effects that the shear stress caused by clamping of the fixture on the surface of the cantilever beam test specimen can be effectively reduced, the bearing capacity of the cantilever beam is prevented from being influenced by excessive shear stress, the stable support can be provided through the support structure designed independently, the deformation caused by excessive internal stress is prevented from influencing the test result, and the cantilever beam test fixture is convenient to use.
Description
Technical Field
The invention mainly relates to the field of performance testing of cantilever beams, in particular to a bending testing tool for a carbon fiber winding cantilever beam.
Background
The carbon fiber cantilever beam refers to a cantilever beam with a composite carbon fiber structure on the surface of the cantilever beam, and can improve the physical properties such as the strength of the cantilever beam. In the bending test of the carbon fiber winding cantilever beam, two large influencing factors can have larger influence on the test result to cause errors of the test result, namely, the support structure of the clamp for testing can generate smaller deformation when bearing larger force, the deformation can influence the test result, and secondly, when the clamp clamps one end of the cantilever beam, larger shearing stress can be generated between the edge of the clamp and the cantilever beam, the shearing stress can increase exponentially along with the increase of the test pressure, and when the shearing stress on the surface of the cantilever beam is overlarge, the bending pressure which can be born by the cantilever beam can be influenced greatly, so that the test result is further influenced.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides the bending test fixture for the carbon fiber winding cantilever beam, which can effectively reduce the shear stress on the surface of the cantilever beam sample caused by clamping of the clamp, prevent the overlarge shear stress from influencing the bearing capacity of the cantilever beam, and can provide stable support through an autonomously designed support structure to prevent the overlarge internal stress from generating deformation to influence the test result, and is convenient to use.
The invention aims to achieve the aim, and the aim is achieved by the following technical scheme:
The utility model provides a bending test frock of carbon fiber winding cantilever beam, includes left sill, right sill, respectively fixedly connected with front bezel, well roof beam, back roof beam between left side sill and the right sill, middle part fixed mounting indulges pillar one on the left side sill, right side sill middle part fixed mounting indulges pillar two, respectively fixed mounting has the support column on front bezel, the back roof beam, fixed mounting has work platform on the support column, fixed mounting has the fixing base on indulging pillar one, one side installs the elevating socket on indulging pillar two, fixed mounting slant spliced pole between indulging pillar one-side top and the right one end of well roof beam, install bending test equipment on the work platform, install mounting fixture on the fixing base, place movable fixture on the elevating socket, mounting fixture one side is equipped with arc limit one, be provided with arc limit two in the movable fixture.
The fixed fixture comprises an upper fixed fixture and a lower fixed fixture, the lower fixed fixture is fixedly arranged on the fixed seat, a cantilever beam sample is arranged in the upper fixed fixture and the lower fixed fixture, the upper fixed fixture is fixedly arranged on the lower fixed fixture after the cantilever beam sample is arranged, the movable fixture comprises an upper movable fixture and a lower movable fixture, the lower movable fixture is arranged on the lifting seat, the upper movable fixture is fixedly arranged on the lower movable fixture after the cantilever beam sample is arranged, a clamping end is arranged on the upper movable fixture, and the second arc-shaped edge is arranged on one side of the upper movable fixture.
The left bottom beam and the right bottom beam are respectively and fixedly provided with triangular bases, adjustable supporting legs are arranged in the triangular bases, and universal wheels are respectively and fixedly arranged at the two ends of the bottom of the left bottom beam and the two ends of the bottom of the right bottom beam.
The middle part has seted up the mounting hole on the work platform, the breach that suits with the elevating socket has been seted up to one end on the work platform.
The lifting seat comprises a stand column, a sleeve is arranged outside the stand column in a sliding mode, one side of the sleeve is fixedly connected with the bearing seat, one side of the sleeve is provided with a rack, one side of the sleeve is rotatably provided with a regulating gear, the regulating gear is meshed with the rack, a rotating shaft of the regulating gear is fixedly connected with a crank, and one side of the sleeve, far away from the regulating gear, is provided with a fixing knob.
The fixing clamp is divided into an annular fixing clamp and a square fixing clamp according to the section shape of the clamped cantilever beam, and the movable clamp is divided into an annular movable clamp and a square movable clamp according to the section shape of the clamped cantilever beam.
Compared with the prior art, the invention has the beneficial effects that:
The cantilever beam test device can stably clamp cantilever beam samples with different cross-section shapes by the clamps with various structures, the first arc-shaped surface arranged on the fixed clamp and the second arc-shaped surface arranged on the movable clamp can effectively reduce the shear stress on the surface of the cantilever beam test sample caused by clamping of the clamps, prevent the shear stress from excessively affecting the bearing capacity of the cantilever beam, improve the accuracy of test results, and can provide stable support to prevent the deformation of the test results caused by excessively large internal stress through the support structure which is designed independently, so that the validity of the test results is ensured.
Drawings
FIG. 1 is a schematic view of a first view angle structure of the present invention;
FIG. 2 is a schematic view of a second view angle structure of the present invention;
FIG. 3 is a schematic view of the hidden structure of the bending test apparatus of the present invention;
FIG. 4 is a schematic view of the partial enlarged construction of the A part of the present invention;
FIG. 5 is a schematic view of the present invention in a partially enlarged configuration of section B;
fig. 6 is a schematic view of the structure of the different clamp of the present invention.
The drawing shows that the number is 1, the left bottom beam, 2, the right bottom beam, 3, the front beam, 4, the middle beam, 5, the rear beam, 6, the first longitudinal support, 7, the second longitudinal support, 8, the support column, 9, the working platform, 10, the fixed seat, 11, the lifting seat, 12, the oblique reinforcing column, 13, the bending test equipment, 14, the fixed clamp, 15, the movable clamp, 16, the arc side I, 17, the arc side II, 21, the triangular seat, 22, the adjustable support leg, 23, the universal wheel, 61, the reinforcing rod I, 62, the reinforcing rod II, 63, the reinforcing rod III, 64, the reinforcing rod IV, 81, the support column I, 82, the support column II, 83, the support column III, 84, the support column IV, 91, the mounting hole, 92, the notch, 111, the upright, 112, the sleeve, 113, the bearing seat, 114, the rack, 115, the adjusting gear, 116, the rocking handle, 117, the fixed clamp, 141, the upper fixed clamp, 142, the lower fixed clamp, the square cantilever sample, 144, the annular fixed clamp, 145, the fixed clamp, the upper movable clamp, the lower clamp, the movable clamp, the square clamp, the movable clamp, the square end, and the square clamp, the sample, and the square clamp.
Detailed Description
The application will be further described with reference to the accompanying drawings and specific embodiments. It is to be understood that these examples are illustrative of the present application and are not intended to limit the scope of the present application. Further, it will be understood that various changes and modifications may be made by those skilled in the art after reading the teachings of the application, and equivalents thereof fall within the scope of the application as defined by the claims.
Referring to fig. 1-6, a bending test fixture for a carbon fiber winding cantilever beam comprises a left bottom beam 1, a right bottom beam 2, a front beam 3, a middle beam 4 and a rear beam 5 are fixedly connected between the left bottom beam 1 and the right bottom beam 2 respectively, a first vertical support column 6 is fixedly installed on the middle of the left bottom beam 1, a second vertical support column 7 is fixedly installed on the middle of the right bottom beam 2, a support column 8 is fixedly installed on the front beam 3 and the rear beam 5 respectively, a working platform 9 is fixedly installed on the support column 8, a fixing seat 10 is fixedly installed on the first vertical support column 6, a lifting seat 11 is installed on one side of the second vertical support column 7, an inclined reinforcing column 12 is fixedly installed between the top of one side of the first vertical support column 6 and one end of the right of the middle beam 4, a bending test device 13 is installed on the working platform 9, a fixing clamp 14 is installed on the fixing seat 10, a movable clamp 15 is placed on the lifting seat 11, an arc-shaped side 16 is arranged on one side of the fixing clamp 14, and an arc-shaped side 17 is arranged in the movable clamp 15.
The fixed clamp 14 comprises an upper fixed clamp 141 and a lower fixed clamp 142, the lower fixed clamp 142 is fixedly arranged on the fixed seat 10, cantilever beam samples 143 are arranged in the upper fixed clamp 141 and the lower fixed clamp 142, the upper fixed clamp 141 is fixedly arranged on the lower fixed clamp 142 after the cantilever beam samples 143 are arranged, the movable clamp 15 comprises an upper movable clamp 151 and a lower movable clamp 152, the lower movable clamp 152 is arranged on the lifting seat 11, the upper movable clamp 151 is fixedly arranged on the lower movable clamp 152 after the cantilever beam samples 143 are arranged, clamping ends 153 are arranged on the upper movable clamp 151, and the arc-shaped second edge 17 is arranged on one side of the upper movable clamp 151.
The left bottom beam 1 with right bottom beam 2 both ends are fixed mounting respectively has triangle seat 21, install adjustable stabilizer blade 22 in the triangle seat 21, left side bottom beam 1 with right bottom beam 2 bottom both ends are fixed mounting respectively has universal wheel 23, the universal wheel is convenient for remove this device, and the triangle seat is used for installing adjustable stabilizer blade, and adjustable stabilizer blade can be adjusted and leave ground height, realizes removing or stably places this device.
The middle part has offered mounting hole 91 on the work platform 9, the breach 92 that suits with lifting seat 11 has been seted up to work platform 9 upper end, and the mounting hole is used for making the slant spliced pole pass, and the breach is used for adapting to lifting seat part structure.
The lifting seat 11 comprises an upright column 111, a sleeve 112 is arranged outside the upright column 111 in a sliding mode, one side of the sleeve 112 is fixedly connected with a bearing seat 113, one side of the sleeve 112 is provided with a rack 114, one side of the sleeve 112 is rotatably provided with an adjusting gear 115, the adjusting gear 115 is meshed with the rack 114, a rotating shaft of the adjusting gear 115 is fixedly connected with a crank 116, one side of the sleeve 112, which is far away from the adjusting gear 115, is provided with a fixing knob 117, the lifting cylinder adopts a rack-and-pinion driving mode, because the lifting seat does not bear excessive pressure, the lifting can be carried out more rapidly in the mode, the bearing seat is used for placing and supporting a movable clamp, the movable clamp is convenient to install, and the height of the bearing seat can be locked quickly by using the fixing knob.
The fixed clamps 14 are divided into annular fixed clamps 144 and square fixed clamps 145 according to the section shapes of the clamped cantilever beams, the movable clamps 15 are divided into annular movable clamps 154 and square movable clamps 155 according to the section shapes of the clamped cantilever beams, and different types of clamps are used for installing cantilever beam samples with different section shapes.
The reinforcing rods I61 and II 62 are arranged between the two sides of the first vertical support column 6 and the left bottom beam 1, and the reinforcing rods III 63 and IV 64 are arranged between the two sides of the second vertical support column 7 and the right bottom beam 2, so that the stability of the vertical support column can be effectively ensured.
The support column 8 comprises a first support column 81, a second support column 82, a third support column 83 and a fourth support column 84, and the stability of the working platform can be effectively guaranteed by the support columns.
The left bottom beam 1, the right bottom beam 2, the front beam 3, the middle beam 4 and the rear beam 5 can provide stable support for an upper structure, the first vertical support column is used for supporting a fixed seat and a fixed clamp, the second vertical support column supports the lifting seat, the support column is used for supporting a working platform, the lifting seat can be manually adjusted in height and locked according to use requirements, the inclined reinforcing column can prevent the vertical support column from elastic deformation to the inner side of equipment when bending test is performed, the fixed clamp is used for fixing one end of the cantilever beam sample, which is fixed, the movable clamp is used for clamping one end of the cantilever beam sample, which is subjected to pressure, the bending test equipment adopts the existing equipment, can accurately apply pressure, record the displacement distance and other information, and the first arc side and the second arc side can effectively reduce the shear stress generated on the surface of the cantilever beam due to clamp clamping during bending test, so that the effectiveness of the test result is further improved.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111395661.5A CN114184494B (en) | 2021-11-15 | 2021-11-15 | A bending test fixture for a carbon fiber wrapped cantilever beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111395661.5A CN114184494B (en) | 2021-11-15 | 2021-11-15 | A bending test fixture for a carbon fiber wrapped cantilever beam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114184494A CN114184494A (en) | 2022-03-15 |
| CN114184494B true CN114184494B (en) | 2025-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111395661.5A Active CN114184494B (en) | 2021-11-15 | 2021-11-15 | A bending test fixture for a carbon fiber wrapped cantilever beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114184494B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201488709U (en) * | 2009-07-20 | 2010-05-26 | 中国航空工业第一集团公司北京长城计量测试技术研究所 | Constant-strength cantilever beam |
| CN208072492U (en) * | 2018-04-20 | 2018-11-09 | 中冶建工集团有限公司 | A kind of pile foundation hole-forming device suitable for periphery coring |
| CN210037468U (en) * | 2019-05-14 | 2020-02-07 | 爱蓝天高新技术材料(大连)有限公司 | Simple and easy test foaming metal material bending strength device |
| CN112525724A (en) * | 2020-11-19 | 2021-03-19 | 哈尔滨工业大学 | Composite material twists special-shaped structure cantilever beam testing arrangement |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2010078351A (en) * | 2008-09-24 | 2010-04-08 | Fuji Xerox Co Ltd | Bending characteristic measuring device and method for measuring bending characteristic |
| US9784656B2 (en) * | 2014-03-10 | 2017-10-10 | Cool Clubs, LLC | Methods and apparatus for measuring properties of a cantilevered member |
| CN104374634B (en) * | 2014-11-10 | 2017-04-12 | 安徽农业大学 | Material mechanical linkage test bed |
| CN106442112B (en) * | 2016-11-03 | 2019-04-30 | 成都理工大学 | A cantilever bending test device for rock slab samples |
| CN207408223U (en) * | 2017-02-28 | 2018-05-25 | 中国农业科学院麻类研究所 | A kind of fibrous mechanical property tests system |
| CN207423667U (en) * | 2017-11-30 | 2018-05-29 | 大韩道恩高分子材料(上海)有限公司 | A kind of radial-boom impact tester tonger that accurate chucking power is provided |
| CN108324360B (en) * | 2018-01-19 | 2019-12-10 | 莫瑛霞 | orthopedic Kirschner wire positioning guider with quick locking switch |
| CN109357962B (en) * | 2018-12-11 | 2021-02-05 | 中国民航大学 | A small load bending fatigue testing device and method |
| CN212779830U (en) * | 2020-08-14 | 2021-03-23 | 上海续途检测技术有限公司 | Elastomer bending property test equipment |
| CN214584598U (en) * | 2021-01-22 | 2021-11-02 | 无锡天祥质量技术服务有限公司 | Flexure tester |
-
2021
- 2021-11-15 CN CN202111395661.5A patent/CN114184494B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201488709U (en) * | 2009-07-20 | 2010-05-26 | 中国航空工业第一集团公司北京长城计量测试技术研究所 | Constant-strength cantilever beam |
| CN208072492U (en) * | 2018-04-20 | 2018-11-09 | 中冶建工集团有限公司 | A kind of pile foundation hole-forming device suitable for periphery coring |
| CN210037468U (en) * | 2019-05-14 | 2020-02-07 | 爱蓝天高新技术材料(大连)有限公司 | Simple and easy test foaming metal material bending strength device |
| CN112525724A (en) * | 2020-11-19 | 2021-03-19 | 哈尔滨工业大学 | Composite material twists special-shaped structure cantilever beam testing arrangement |
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| Publication number | Publication date |
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| CN114184494A (en) | 2022-03-15 |
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