CN103293060A - Compression test device capable of preventing bending failure of loading end - Google Patents
Compression test device capable of preventing bending failure of loading end Download PDFInfo
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- CN103293060A CN103293060A CN2013101953984A CN201310195398A CN103293060A CN 103293060 A CN103293060 A CN 103293060A CN 2013101953984 A CN2013101953984 A CN 2013101953984A CN 201310195398 A CN201310195398 A CN 201310195398A CN 103293060 A CN103293060 A CN 103293060A
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- pedestal
- pressure head
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- test piece
- sliding block
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Abstract
The invention belongs to the field of aviation compound material tests and particularly relates to a compression test device capable of preventing bending failure of a loading end. The compression test device comprises a pressing head assembly and a base assembly, wherein the base assembly comprises a base, two side sliding blocks and a lower sliding block; a base boss is arranged behind the side sliding blocks and the lower sliding block on the base assembly. According to the compression test device, the pressing head assembly with a guide groove is adopted, so that the pressing head assembly is prevented from rotating and guaranteed to move in a vertical direction only; even if a test piece with low processing precision or flatness is adopted, the bending failure of a connection region between the test piece and the pressing head assembly due to rolling of the pressing head assembly caused by load eccentricity can be prevented; the test piece can be accurately located; the slanting installation of the rectangular flat-plate test piece caused by artificial positioning is effectively prevented; the test piece and an external load are guaranteed to be in the same plane; the test piece is always in a pure compression state.
Description
Technical field
The invention belongs to aviation composite material test field, particularly relate to a kind of compression verification device of anti-loading end fail in bending.
Background technology
Compound substance has been widely used in manufacturing and designing of light structures such as aircraft because having excellent properties such as high specific strength and specific modulus.Compound substance compression load-bearing capacity is important material performance index, must be according to compound substance compression performance index when composite structure design and structural strength are checked.
Compound substance compression performance method of testing is dull and stereotyped compression at present, pressure head in this compression verification device only clamps the upper surface of rectangular flat test specimen, with proving installation other parts onrelevant, in actual test process, test specimen machining precision or test specimen flatness can not be in perfect condition, the off-centre of compressive load is inevitable, cause the bonding pad of test specimen and pressure head to be in the press-bending couple state and destroy in advance, final test gained compound substance compression performance is lower than material actual compression load-bearing capacity, makes weight cost increase in the composite airplane structural design.Secondly this compression verification device clamping test pieces all relies on slide block, test specimen can not accurately be located in the installation process, test specimen can not be in the same plane with external applied load, causes that test specimen is not in the pure compression state, causes test result can not truly reflect the actual compression load-bearing capacity of material.
Summary of the invention
The objective of the invention is: a kind of compression verification device of anti-loading end fail in bending is provided, and accurately the location test part improves test accuracy.
Technical scheme of the present invention is: a kind of compression verification device of anti-loading end fail in bending, comprise pressure head component 1 and base assembly 2, described base assembly 2 comprises pedestal 201, two side slides 202,203 and sliding block 204, described pedestal 201 is provided with two columns 205,206, described pressure head component 1 comprises briquetting 101 and is fixed in the guide plate 102 of briquetting 101 both sides, 103, form two with pedestal 201 on two columns 205,206 gathering sills 104 that cooperate, 105, described guide plate 102,103 are positioned at gathering sill 104,105 get the position is provided with roller groups 106,107,108,109.
The below of described pressure head component 1 also is provided with top shoe 110 and boss 111, and described top shoe 110 passes through bolt.
Described side slide 202,203 and sliding block 204 by bolt on pedestal 201.
Advantage of the present invention is: the present invention compares with universal compressed proving installation, adopt tape guide groove pressure head component, by gathering sill being enclosed within on the pedestal left and right pillar, utilizing gathering sill interior roller groups in the pressure head component left and right sides not have the gap with the column front and rear surfaces contacts, prevent that pressure head component from rotating, guarantee only vertically translation of pressure head component, even adopt machining precision or the not high test specimen of flatness, also can prevent from causing that because of load over centre the pressure head component rolling finally causes test specimen and pressure head component join domain to bend and fractures; The pedestal column contacts by roller groups with pressure head component, can reduce the friction between pressure head component and the pedestal column, the additional load that contact is produced can be ignored, and final test adds the compression load-bearing capacity that fail in compression load can truly reflect test specimen.The present invention compares with universal compressed proving installation, the top shoe rear of pressure head component, the side slide of base assembly and sliding block rear all are provided with boss, when test specimen is installed, rectangular flat test specimen one side plane is contacted with boss, can accurately locate test specimen, effectively prevent artificial location and cause the rectangular flat test specimen to tilt to install that guarantee test specimen and plus load in same plane, test specimen is in the pure compression state all the time.
Description of drawings
Fig. 1 is structural representation of the present invention (pressure head component separation);
Fig. 2 is structural representation of the present invention (pressure head component is not separated);
Fig. 3 is axonometric drawings such as pressure head component of the present invention;
Fig. 4 is pressure head component partial enlarged drawing of the present invention;
Fig. 5 is pressure head component vertical view of the present invention;
Fig. 6 is pressure head component front elevation of the present invention;
Fig. 7 is pressure head component left view of the present invention;
Fig. 8 is pressure head component vertical view of the present invention;
Fig. 9 is axonometric drawings such as base assembly of the present invention;
Figure 10 is base assembly upward view of the present invention;
Figure 11 is base assembly front elevation of the present invention;
Figure 12 is base assembly left view of the present invention;
Figure 13 is base assembly vertical view of the present invention.
Wherein, 1-pressure head component, 2-base assembly, 3-rectangular flat test specimen, 101-briquetting, 102, the 103-guide plate, 104,105-gathering sill, 106～109-roller groups, 110-top shoe, the 111-boss, the 201-pedestal, 202, the 203-side slide, the 204-sliding block, 205,206-column, 207-pedestal boss.
Embodiment
Below in conjunction with accompanying drawing the present invention is described in further details, sees also Fig. 1 to Fig. 3.
As shown in Figures 1 and 2, a kind of compression verification device of anti-loading end fail in bending comprises pressure head component 1, base assembly 2, is used for loading rectangular flat test specimen 3.
To shown in Figure 8, described pressure head component 1 comprises briquetting 101 and is fixed in the guide plate 102,103 of briquetting 101 both sides that described guide plate 102,103 is positioned at gathering sill 104,105 must be provided with roller groups 106,107,108,109 in the position as Fig. 2.The below of pressure head component 1 also is provided with top shoe 110 and boss 111, and described top shoe 110 is by being bolted on the briquetting 101.On the guide plate 102,103 of briquetting assembly 1 both sides roller set 106～109 is set, forms gathering sill 104,105.By gathering sill 104,105, be enclosed within respectively on the pedestal left and right pillar 205,206.Smoothly contact with two columns 205,206 sides of base assembly 2 by roller groups 106,107,108,109, can reduce the friction between pressure head component 1 and the pedestal column 205,206, the additional load that contact is produced can be ignored, top shoe 110 is used for the fixing of rectangular flat test specimen 3, by adjusting the gap between top shoe 110 and the boss 111, with rectangular flat test specimen 3 accurate perpendicular positionings.
To shown in Figure 13, described base assembly 2 comprises pedestal 201, two side slides 202,203 and sliding block 204 as Fig. 9, the side slide 202 on the described base assembly 2,203 and sliding block 204 after also be provided with pedestal boss 207.Pedestal 201 is provided with two columns 205,206.Pedestal 201 bottom surface horizontal positioned, pedestal 201 upper surfaces contact with pedestal sliding block 204 lower surfaces, and both connect by bolt.Side slide 202,203 and sliding block 204 be used for rectangular flat test specimen 3 and be fixed in base assembly 2, can by adjust side slide 202,203 and sliding block 204 and pedestal boss 207 between the gap, rectangular flat test specimen 3 accurately is vertically positioned on the base assembly.Pedestal 201 is provided with two columns 205,206, two gathering sills 104,105 of pressure head component can be enclosed within two columns 205,206, by roller set and two columns 205,206 smooth contacts, reduce friction between the two effectively, the purpose of pedestal 201 bottom surface horizontal positioned is for follow-up rectangular flat test specimen 3 being positioned on the base assembly 2 of precision more.
The testpieces installation process: with a rectangle plane of rectangular flat test specimen 3 near pedestal boss 207, this moment, test specimen was in plumbness, adjust the gap of pedestal left and right sides slide block 203,204 and pedestal boss 207, make the edge of a knife and test specimen 3 opposite side plane contact on the side slide 203,204, tighten side slide 203,204 bolt make side slide 203,204 and pedestal 201 be connected; Adjust the gap of pedestal sliding block 204 and pedestal bottom plate boss 207, test specimen 3 lower ends are clamped in this gap, tighten the bolt of pedestal sliding block 204, pedestal sliding block 204 and pedestal 201 are connected.Rectangular flat test specimen 3 one side planes contact with the boss 207 of base assembly 2, can be to test specimen 3 accurate perpendicular positionings, effectively prevent artificial location and cause rectangular flat test specimen 3 to tilt to install, guarantee that test specimen 3 and plus load in same plane, are in the pure compression state eventually.
With pressure head component 1 bottom surface horizontal positioned, the left and right sides gathering sill 104,105 of pressure head component 1 is enclosed within respectively on the pedestal left and right pillar 205,206, left and right sides gathering sill 104,105 roller groups 106,107,108,109 contact with pedestal column 205,206 surfaces in the base assembly 2 respectively, pressure head component 1 can move freely along pedestal column 205,206 vertical axis, and the height of adjusting pressure head component 1 makes the bottom surface of briquetting 101 contact with rectangular flat test specimen 3 top planes; Adjust the gap of top shoe 110 and boss 111, rectangular flat test specimen 3 upper ends are clamped, the bolt of tightening top shoe 110 is connected top shoe 110 and briquetting 101.This compression verification device by pressure head about roller groups 106～109 in two gathering sills 104,105 do not have the gap and contact with pedestal two columns 205,206 front and rear surfaces, can prevent effectively that briquetting 101 from rotating, guarantee only vertically translation of briquetting 101, even adopt machining precision or the not high test specimen 3 of flatness, also can prevent from causing that because of load over centre briquetting 101 rotations finally cause test specimen 3 and pressure head component 1 join domain to bend and fracture.Pedestal column 205,206 contacts by roller groups with pressure head component 1, can reduce the friction between pressure head component 1 and the pedestal column 205,206, the additional load that contact is produced can be ignored, and final test adds the compression load-bearing capacity that fail in compression load truly reflects test specimen.
Claims (4)
1. the compression verification device of an anti-loading end fail in bending, comprise pressure head component [1] and base assembly [2], described base assembly [2] comprises pedestal [201], two side slides [202,203] and sliding block [204], described pedestal [201] is provided with two columns [205,206], it is characterized in that, described pressure head component [1] comprises briquetting [101] and is fixed in the guide plate [102 of briquetting [101] both sides, 103], form two with pedestal [201] on two columns [205,206] gathering sill [104 of Pei Heing, 105], described guide plate [102,103] be positioned at gathering sill [104,105] position is provided with roller groups [106,107,108,109].
2. the compression verification device of a kind of anti-loading end fail in bending according to claim 1, it is characterized in that, described two side slides [202,203] are connected by bolt with two columns [205,206] respectively, described sliding block 204 by bolt on pedestal [201].
3. the compression verification device of a kind of anti-loading end fail in bending according to claim 1, it is characterized in that, also be provided with pedestal boss [207] behind side slide on the described base assembly [2] [202,203] and the sliding block [204], sliding block [204] cooperates the bottom of clamping rectangular flat test specimen [3] with pedestal boss [207], side slide [202,203] cooperates two lateral edges of clamping rectangular flat test specimen [3] with pedestal boss [207].
4. the compression verification device of a kind of anti-loading end fail in bending according to claim 1, it is characterized in that, the below of described pressure head component [1] also is provided with top shoe [110] and boss [111], top shoe [110] cooperates the top of clamping rectangular flat test specimen [3] with boss [111], described top shoe [110] is by being bolted on briquetting [101] bottom surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310195398.4A CN103293060B (en) | 2013-01-05 | 2013-05-23 | Compression test device capable of preventing bending failure of loading end |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310002902 | 2013-01-05 | ||
| CN2013100029024 | 2013-01-05 | ||
| CN201310002902.4 | 2013-01-05 | ||
| CN201310195398.4A CN103293060B (en) | 2013-01-05 | 2013-05-23 | Compression test device capable of preventing bending failure of loading end |
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| CN103293060A true CN103293060A (en) | 2013-09-11 |
| CN103293060B CN103293060B (en) | 2015-07-01 |
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| CN201310195398.4A Active CN103293060B (en) | 2013-01-05 | 2013-05-23 | Compression test device capable of preventing bending failure of loading end |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106404520A (en) * | 2015-07-29 | 2017-02-15 | 哈尔滨飞机工业集团有限责任公司 | Web beam structure anti-destabilization clamper under fatigue shear load effect |
| CN107576613A (en) * | 2017-09-30 | 2018-01-12 | 贵州新安航空机械有限责任公司 | Watt back of the body and friction piece longitudinal direction cohesion test fixture of a kind of powder metallurgy brake brake shoe |
| CN107907407A (en) * | 2017-09-27 | 2018-04-13 | 同济大学 | A kind of new rubber gasket compression stress performance testing device and method |
| CN110514513A (en) * | 2019-08-09 | 2019-11-29 | 中国石油天然气集团有限公司 | One kind is for resistant to bending mold and application method in plate-shape metal compression experiment |
| CN111257106A (en) * | 2020-02-10 | 2020-06-09 | 南京航空航天大学 | High-speed impact test fixture for composite material laminate |
| CN112414854A (en) * | 2020-10-27 | 2021-02-26 | 哈尔滨工程大学 | Curved plate withstand voltage test loading mechanism |
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| JPH0933414A (en) * | 1995-07-21 | 1997-02-07 | Nippon Steel Corp | Special fulcrum jig for compression test |
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| CN201281681Y (en) * | 2008-11-04 | 2009-07-29 | 成都飞机工业（集团）有限责任公司 | Non-metal compression performance test jig |
| CN202066750U (en) * | 2011-03-23 | 2011-12-07 | 沈阳合兴检测设备有限公司 | Tension and compression performance detection device for building heat insulation material |
| CN202599754U (en) * | 2012-05-11 | 2012-12-12 | 中国航空工业集团公司西安飞机设计研究所 | Reinforced wallboard compression test clamping apparatus |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0933414A (en) * | 1995-07-21 | 1997-02-07 | Nippon Steel Corp | Special fulcrum jig for compression test |
| EP0779505A1 (en) * | 1995-12-12 | 1997-06-18 | Societe Europeenne De Propulsion | Device for off-axis tests of anisotropic materials |
| CN201281681Y (en) * | 2008-11-04 | 2009-07-29 | 成都飞机工业（集团）有限责任公司 | Non-metal compression performance test jig |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106404520A (en) * | 2015-07-29 | 2017-02-15 | 哈尔滨飞机工业集团有限责任公司 | Web beam structure anti-destabilization clamper under fatigue shear load effect |
| CN107907407A (en) * | 2017-09-27 | 2018-04-13 | 同济大学 | A kind of new rubber gasket compression stress performance testing device and method |
| CN107576613A (en) * | 2017-09-30 | 2018-01-12 | 贵州新安航空机械有限责任公司 | Watt back of the body and friction piece longitudinal direction cohesion test fixture of a kind of powder metallurgy brake brake shoe |
| CN107576613B (en) * | 2017-09-30 | 2023-11-14 | 贵州新安航空机械有限责任公司 | Powder metallurgy brake shoe's tile back and friction body longitudinal adhesion test fixture |
| CN110514513A (en) * | 2019-08-09 | 2019-11-29 | 中国石油天然气集团有限公司 | One kind is for resistant to bending mold and application method in plate-shape metal compression experiment |
| CN111257106A (en) * | 2020-02-10 | 2020-06-09 | 南京航空航天大学 | High-speed impact test fixture for composite material laminate |
| CN111257106B (en) * | 2020-02-10 | 2021-04-06 | 南京航空航天大学 | High-speed impact test fixture for composite material laminate |
| CN112414854A (en) * | 2020-10-27 | 2021-02-26 | 哈尔滨工程大学 | Curved plate withstand voltage test loading mechanism |
| CN112414854B (en) * | 2020-10-27 | 2022-06-14 | 哈尔滨工程大学 | Curved plate withstand voltage test loading mechanism |
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| Publication number | Publication date |
|---|---|
| CN103293060B (en) | 2015-07-01 |
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