CN103293060B - 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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- CN103293060B CN103293060B CN201310195398.4A CN201310195398A CN103293060B CN 103293060 B CN103293060 B CN 103293060B CN 201310195398 A CN201310195398 A CN 201310195398A CN 103293060 B CN103293060 B CN 103293060B
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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 field tests, particularly relate to a kind of compression verification device of anti-loading end fail in bending.
Background technology
Compound substance, because having the excellent properties such as high specific strength and specific modulus, is widely used in manufacturing and designing of the light structures such as aircraft.Compound substance compression load-bearing capacity is important material performance index, must according to compound substance compression performance index when composite structure design and structural strength are checked.
Current compound substance compression performance method of testing is dull and stereotyped compression, 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 bias of compressive load is inevitable, the bonding pad of test specimen and pressure head is caused to be in press-bending couple state and premature degradation, final test gained compound substance compression performance is lower than material actual compression load-bearing capacity, and during composite aircraft structure is designed, weight cost increases.Secondly this compression verification device clamping test pieces all relies on slide block, in installation process, test specimen can not accurately be located, test specimen can not be in same plane with external applied load, causes test specimen not to be in pure compression state, causes test result truly can not reflect the actual compression load-bearing capacity of material.
Summary of the invention
The object of the invention is: the compression verification device that a kind of anti-loading end fail in bending is provided, can accurate location test part, improve 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 pieces of 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 on the guide plate 102 of briquetting 101 both sides, 103, formed two with the column of two on pedestal 201 205, 206 gathering sills 104 coordinated, 105, described guide plate 102, 103 are positioned at gathering sill 104, 105 obtain position is provided with roller groups 106, 107, 108, 109.
The below of described pressure head component 1 is also provided with top shoe 110 and boss 111, and described top shoe 110 is bolted.
Pedestal boss 207 is also provided with after side slide 202,203 on described base assembly 2 and sliding block 204.
Described side slide 202,203 and sliding block 204 are secured by bolts on pedestal 201.
Advantage of the present invention is: the present invention is compared with universal compressed proving installation, adopt tape guide groove pressure head component, by gathering sill being enclosed within pedestal left and right pillar, utilize the roller groups in the gathering sill of pressure head component left and right and column front and rear surfaces intimate contact, prevent pressure head component from rotating, ensure pressure head component only vertically translation, even if adopt machining precision or the not high test specimen of flatness, also can prevent finally causing test specimen and pressure head component join domain to bend because load over centre causes pressure head component to roll and fracture; Base mast is contacted by roller groups with pressure head component, the friction between pressure head component and base mast can be reduced, the additional load that contact is produced is negligible, and the additional compressive crushing load of final test truly can reflect the compression load-bearing capacity of test specimen.The present invention is compared with universal compressed proving installation, the top shoe rear of pressure head component, the side slide of base assembly and sliding block rear are all provided with boss, when test specimen is installed, rectangular flat test specimen one side plane is contacted with boss, accurately can locate test specimen, effectively prevent artificial location and cause rectangular flat test specimen to tilt to install, ensure that test specimen and plus load are in same plane, test specimen is in pure compression state all the time.
Accompanying drawing explanation
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 pressure head component isometric views 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 base assembly isometric views 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, 102,103-guide plate, 104,105-gathering sill, 106 ~ 109-roller groups, 110-top shoe, 111-boss, 201-pedestal, 202,203-side slide, 204-sliding block, 205,206-column, 207-pedestal boss.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further details, refers to 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, for loading rectangular flat test specimen 3.
As shown in Fig. 2 to Fig. 8, described pressure head component 1 comprises briquetting 101 and is fixed on the guide plate 102,103 of briquetting 101 both sides, and described guide plate 102,103 is positioned at gathering sill 104,105 must be provided with roller groups 106,107,108,109 in position.The below of pressure head component 1 is also provided with top shoe 110 and boss 111, and described top shoe 110 is bolted on briquetting 101.The guide plate 102,103 of briquetting assembly 1 both sides arranges roller set 106 ~ 109, forms gathering sill 104,105.By gathering sill 104,105, be enclosed within respectively on pedestal left and right pillar 205,206.By two columns 205,206 side smooth engagement of roller groups 106,107,108,109 and base assembly 2, the friction between pressure head component 1 and base mast 205,206 can be reduced, the additional load that contact is produced is negligible, top shoe 110 fixing for rectangular flat test specimen 3, by the gap between adjustment top shoe 110 and boss 111, rectangular flat test specimen 3 precise perpendicularity is located.
As shown in Fig. 9 to Figure 13, described base assembly 2 comprises pedestal 201, two pieces of side slides 202,203 and sliding block 204, is also provided with pedestal boss 207 after the side slide 202,203 on described base assembly 2 and sliding block 204.Pedestal 201 is provided with two columns 205,206.Pedestal 201 bottom surface horizontal positioned, pedestal 201 upper surface contacts with pedestal sliding block 204 lower surface, and both are bolted.Side slide 202,203 and sliding block 204 are fixed on base assembly 2 for rectangular flat test specimen 3, by adjustment side slide 202,203 and the gap between sliding block 204 and pedestal boss 207, rectangular flat test specimen 3 precise perpendicularity can be positioned on base assembly.Pedestal 201 is provided with two columns 205,206, two of a pressure head component gathering sill 104,105 can be enclosed within two columns 205,206, by roller set and two column 205,206 smooth contact, effectively reduce friction between the two, the object of pedestal 201 bottom surface horizontal positioned is in order to subsequent rectangular flat test piece 3 can being more positioned on base assembly 2 of precision.
Testpieces installation process: by rectangular flat test specimen 3 rectangle plane near pedestal boss 207, now test specimen is in plumbness, the gap of adjustment pedestal left and right sides slide block 203,204 and pedestal boss 207, make the edge of a knife on side slide 203,204 and test specimen 3 opposite side plane contact, the bolt tightening side slide 203,204 makes side slide 203,204 and pedestal 201 be connected; Adjustment pedestal sliding block 204 and the gap of pedestal bottom plate boss 207, by the clamping of test specimen 3 lower end in the gap, tighten the bolt of pedestal sliding block 204, pedestal sliding block 204 and pedestal 201 be connected.Rectangular flat test specimen 3 one side plane contacts with the boss 207 of base assembly 2, can locate test specimen 3 precise perpendicularity, effectively prevent artificial location and cause rectangular flat test specimen 3 to tilt to install, ensureing that test specimen 3 and plus load are in same plane, are in pure compression state eventually.
By pressure head component 1 bottom surface horizontal positioned, the left and right gathering sill 104,105 of pressure head component 1 is enclosed within pedestal left and right pillar 205,206 respectively, the roller groups 106,107,108,109 of left and right gathering sill 104,105 respectively with base mast 205,206 surface contact in base assembly 2, pressure head component 1 can move freely along base mast 205,206 vertical axis, and the height of adjustment pressure head component 1 makes the bottom surface of briquetting 101 contact with rectangular flat test specimen 3 top planes; Adjustment top shoe 110 and the gap of boss 111, clamp rectangular flat test specimen 3 upper end, and the bolt tightening top shoe 110 makes top shoe 110 and briquetting 101 be connected.This compression verification device is by the roller groups 106 ~ 109 in two gathering sills 104,105 about pressure head and pedestal two column 205,206 front and rear surfaces intimate contact, can effectively prevent briquetting 101 from rotating, ensure briquetting 101 only vertically translation, even if adopt machining precision or the not high test specimen 3 of flatness, also can prevent finally causing because load over centre causes briquetting 101 to rotate test specimen 3 and pressure head component 1 join domain to bend and fracture.Base mast 205,206 is contacted by roller groups with pressure head component 1, the friction between pressure head component 1 and base mast 205,206 can be reduced, the additional load that contact is produced is negligible, and the additional compressive crushing load of final test truly reflects the compression load-bearing capacity of 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 pieces of 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 on the guide plate [102 of briquetting [101] both sides, 103], formed two with two columns [205 on pedestal [201], 206] gathering sill [104 coordinated, 105], described guide plate [102, 103] gathering sill [104 is positioned at, 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 bolted with two columns [205,206] respectively, and described sliding block [204] is secured by bolts 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, pedestal boss [207] is also provided with after side slide [202,203] on described base assembly [2] and sliding block [204], sliding block [204] coordinates with pedestal boss [207] bottom clamping rectangular flat test specimen [3], and side slide [202,203] coordinates two lateral edges 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] is also provided with top shoe [110] and boss [111], top shoe [110] coordinates with boss [111] top clamping rectangular flat test specimen [3], and described top shoe [110] is 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 |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100029024 | 2013-01-05 | ||
| CN201310002902 | 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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| Publication Number | Publication Date |
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| CN103293060A CN103293060A (en) | 2013-09-11 |
| CN103293060B true 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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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| 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 |
| 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 |
| CN112414854B (en) * | 2020-10-27 | 2022-06-14 | 哈尔滨工程大学 | Curved plate withstand voltage test loading mechanism |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0933414A (en) * | 1995-07-21 | 1997-02-07 | Nippon Steel Corp | Special fulcrum jig for compression test |
| FR2742228B1 (en) * | 1995-12-12 | 1998-02-27 | Europ Propulsion | DEVICE FOR OFF-AXIS TESTING 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 |
| 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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