CN114166622B - Shaft pressure test fixture - Google Patents
Shaft pressure test fixture Download PDFInfo
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- CN114166622B CN114166622B CN202111513801.4A CN202111513801A CN114166622B CN 114166622 B CN114166622 B CN 114166622B CN 202111513801 A CN202111513801 A CN 202111513801A CN 114166622 B CN114166622 B CN 114166622B
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- clamping piece
- upright post
- piece
- support clamping
- horizontal
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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
- G01N3/02—Details
- G01N3/04—Chucks
-
- 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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Abstract
The invention relates to the field of wallboard structure mechanical property testing equipment, in particular to a shaft pressure test fixture which comprises a horizontal support base, a left upright post and a right upright post which are arranged on two sides of the horizontal support base, and a test piece clamping assembly which is connected with the left upright post and the right upright post through bolts, wherein the test piece clamping assembly comprises a left front side support clamping piece, a left rear side support clamping piece, a right front side support clamping piece, a right rear side support clamping piece, a horizontal support clamping piece I, a horizontal support clamping piece II, a horizontal support clamping piece III, a horizontal support clamping piece IV and an upper clamping plate which are arranged on the left upright post. The invention can be directly clamped on a universal testing machine, can prevent the sliding and loosening between the clamping tool and the testing machine, can bear larger axial compression test load, can keep the test piece in a pure simple supporting state through the upright post and the clamping piece, meets the axial compression performance test of the test pieces with different sizes, and expands the application range of the clamp.
Description
Technical Field
The invention relates to the field of wallboard structure mechanical property testing equipment, in particular to a shaft pressure test fixture.
Background
The mechanical property of the test structural member is the most critical step for structural design and strength check, but the mechanical property test of large and medium-sized wallboard structures such as aircraft wings is still a challenging problem. The wing wallboard has a complex structure, and in the mechanical property test of the corresponding test piece, the number of axial compression clamps which can be directly clamped on the universal testing machine is small. Because the wallboard structure test piece size is great, in the existing technique, the phenomena of loose, bending, sliding and the like of the test piece or the clamping tool, which are caused by unstable clamping, also often occur, so that the error of the test result is great or the actual loading condition in engineering application can not be well met, thereby reducing the reliability of the test. Meanwhile, in the wallboard structure test, the test piece is in a pure simple supporting state, and the structure is prevented from being unstable in the compression process, so that great difficulty is brought to the design of the aircraft structure and the mechanical property test.
Disclosure of Invention
Aiming at the problems of loose clamping and instability of a test piece in the process of testing the axial compression performance of a wallboard structure, the invention provides the axial compression clamp which is easy to clamp, convenient to operate and widely applicable, and solves the testing problem that the four sides of the test piece are simply supported and the front and rear rigid centers of the test piece are not in the geometric center.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a shaft pressure test anchor clamps, includes horizontal support base, installs left stand, the right stand in horizontal support base both sides to and realize the test piece clamping component who is connected with left stand, right stand through the bolt, test piece clamping component is including installing left front side support clamping piece, left back side support clamping piece on left stand, install right front side support clamping piece on right stand, right back side support clamping piece, and horizontal support clamping piece I, horizontal support clamping piece II, horizontal support clamping piece III, horizontal support clamping piece IV and last grip block, horizontal support clamping piece I, horizontal support clamping piece II, horizontal support clamping piece III, the left and right both ends of horizontal support clamping piece IV link to each other with left stand, right stand after respectively through the bolt, with left front side support clamping piece, left back side support clamping piece, right front side support clamping piece, right back side support clamping piece forms two rectangle centre gripping frames, go up the upper portion that the grip block level sets up between two rectangle centre gripping frames.
Further, a T-shaped groove for installing the left upright post and the right upright post is formed in the bottom plate of the horizontal base, the left upright post and the right upright post are relatively fixed through bolts, and test pieces with different sizes can be adapted through movement of the left upright post and the right upright post in the T-shaped groove.
Further, elliptical holes matched with the bolts are formed in the bottom plates of the left upright post and the right upright post, and the left upright post and the right upright post can be subjected to fine adjustment back and forth through the elliptical holes so as to ensure that the loading axis passes through the rigid center of the test piece.
Further, bolt holes for installing the left front side supporting clamping piece, the left rear side supporting clamping piece, the right front side supporting clamping piece, the right rear side supporting clamping piece, the horizontal supporting clamping piece I, the horizontal supporting clamping piece II, the horizontal supporting clamping piece III and the horizontal supporting clamping piece IV are formed in the inner sides of the left upright post and the right upright post.
Further, the front side and the rear side of the left upright post and the right upright post are provided with reinforcing ribs, so that the stability of the upright posts is ensured.
Further, the left front side supporting clamping piece, the left rear side supporting clamping piece, the right front side supporting clamping piece and the flat plate side of the right rear side supporting clamping piece are respectively connected with the left stand column and the right stand column, and in addition, one side with an arc is contacted with the test piece, so that the left and right of the test piece are in a simply supported state.
Further, the horizontal support clamping piece I, the horizontal support clamping piece II, the horizontal support clamping piece III and the horizontal support clamping piece IV are arranged on the upper side and the lower side of the left front side support clamping piece, the left rear side support clamping piece, the right front side support clamping piece and the right rear side support clamping piece, and the middle part is provided with an arc part to be contacted with the test piece, so that the test piece is in a simply supported state up and down.
Further, the loading of test pieces is realized by controlling the distance between the upper clamping plate and the horizontal base through the testing machine, and the cylindrical rods on the upper clamping plate and the horizontal base are directly clamped on the universal testing machine.
Compared with the prior art, the invention has the following beneficial effects:
1) The clamping device is convenient and reliable to use, can be directly clamped on a universal testing machine, effectively prevents loosening and sliding phenomena between the clamp and the testing machine, reduces experimental errors caused by connection problems, and can bear larger axial pressure load;
2) The four sides of the test piece can be in a pure simple state, and the engineering application practice is met;
3) The grooves on the base and the elliptical grooves on the upright post base can effectively enlarge the application range, are applicable to test pieces with different sizes and rigidity cores not in the geometric center, and increase the universality of the clamp;
4) The two sides of the upright post are provided with the reinforcing ribs, so that the upright post can bear larger axial compression load without deformation, and the strength and the rigidity of the upright post are effectively improved;
5) The structure instability problem in the test process of the test piece is effectively prevented;
6) The structure is simple, and the product is manufactured and maintained; the operation is simple, and the clamping is convenient; is safe and reliable.
Drawings
Fig. 1 is a schematic structural assembly diagram of an axial compression test fixture according to an embodiment of the present invention.
Fig. 2 is a front view showing a use state of the axial compression test fixture according to the embodiment of the invention.
FIG. 3 is an exploded view of an axial compression test fixture according to an embodiment of the present invention.
Fig. 4 is a view of a horizontal base member.
Fig. 5 is a left and right column member view.
Figure 6 is a diagram of a lateral support clip assembly.
FIG. 7 is a view of a horizontal support clip assembly
Fig. 8 is a view of the upper clamping plate member.
Detailed Description
The present invention will be described in further detail with reference to examples in order to make the objects and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1 to 8, the embodiment of the invention provides a shaft pressing test fixture, which comprises a horizontal support base 1, a left upright 2 and a right upright 3 which are arranged on two sides of the horizontal support base 1, and a test piece clamping component which is connected with the left upright 2 and the right upright 3 through bolts, wherein the test piece clamping component comprises a left front side support clamping piece 4, a left rear side support clamping piece 6 which are arranged on the left upright 2, a right front side support clamping piece 5 and a right rear side support clamping piece 7 which are arranged on the right upright 3, a horizontal support clamping piece I8, a horizontal support clamping piece II9, a horizontal support clamping piece III10, a horizontal support clamping piece IV11 and an upper clamping plate 12, wherein the left end and the right end of the horizontal support clamping piece I8, the horizontal support clamping piece II9, the horizontal support clamping piece III10 and the horizontal support clamping piece IV11 are respectively connected with the left upright 2 and the right upright 3 through bolts, the left front side support clamping piece 4, the left rear side support clamping piece 6, the right rear side support clamping piece 5 and the right rear side support clamping piece 7 form two rectangular clamping frames, and the upper clamping plate 12 is horizontally arranged at the upper parts between the two rectangular clamping frames. The test piece is fixed on the base through the left upright post 2, the right upright post 3, the left front side supporting clamping piece 4, the left rear side supporting clamping piece 6, the right front side supporting clamping piece 5, the right rear side supporting clamping piece 7, the horizontal supporting clamping piece I8, the horizontal supporting clamping piece II9, the horizontal supporting clamping piece III10 and the horizontal supporting clamping piece IV11, so that four sides of the test piece are in a simply supported state. The T-shaped groove on the horizontal base and the elliptical holes on the left and right upright posts provide convenience for the test piece to move in all directions, and the loading axis can be ensured to pass through the rigid center of the test piece, so that the test piece is in pure compression in the loading process.
In this embodiment, open there is the T type groove that is used for installing left stand 2 and right stand 3 on the bottom plate of horizontal base 1, realize the relative fixation of left side stand 2 and right side stand 3 through the bolt to can adapt to the test piece of equidimension not through the removal of left stand 2 and right stand 3 in T type inslot.
In this embodiment, open on the bottom plate of left stand 2, right stand 3 have with the oval hole of bolt adaptation, can make left stand 2 and right stand 3 carry out the fine setting around through this oval hole, ensure the loading axis and pass through the rigid center of test piece, guarantee that the test piece is in pure compression state.
In this embodiment, bolt holes for installing the left front side supporting clip 4, the left rear side supporting clip 6, the right front side supporting clip 5, the right rear side supporting clip 7, the horizontal supporting clip I8, the horizontal supporting clip II9, the horizontal supporting clip III10 and the horizontal supporting clip IV11 are formed in the inner sides of the left upright post 2 and the right upright post 3.
In this embodiment, both sides all are equipped with the stiffening rib around left stand 2, right stand 3, have guaranteed the stability of stand, are used for preventing anchor clamps unstability, side bend.
In this embodiment, the flat plate sides of the left front side supporting clip 4, the left rear side supporting clip 6, the right front side supporting clip 5 and the right rear side supporting clip 7 are respectively connected with the left upright post 2 and the right upright post 3, and the side with the circular arc is contacted with the test piece, so that the left and right of the test piece are in a simply supported state.
In this embodiment, two bolt holes are opened about the horizontal support clamping piece I8, the horizontal support clamping piece II9, the horizontal support clamping piece III10, the horizontal support clamping piece IV11 for being connected with the upright post, and the middle side contacting with the test piece has a circular arc-shaped bulge with a radius of 5mm for satisfying the upper and lower simply supported state of the test piece, and the upper and lower simply supported states are respectively arranged on the upper and lower sides of the left front side support clamping piece 4, the left rear side support clamping piece 6, the right front side support clamping piece 5 and the right rear side support clamping piece 7.
In this embodiment, the test piece is loaded by controlling the distance between the upper clamping plate 12 and the horizontal base 1 by the testing machine, and the cylindrical bars on the upper clamping plate 12 and the horizontal base 1 are directly clamped on the universal testing machine.
Further, the heights of the left and right upright posts, the side support clamping pieces and the horizontal support clamping pieces can be adjusted according to the sizes of the test pieces. In the fixture assembly process, a 3mm gap is reserved between the left upright post and the right upright post and the side edge of the test piece, so that the upright post and the test piece are prevented from being contacted in the test loading process to change the four-side supporting mode.
Before this implementation test, with the cylinder stick centre gripping of horizontal base 1 on universal testing machine's lower clamp, stand the proper position of test piece at the base, fix the both sides of test piece with left stand 2, right stand 3, carry out bolted connection with both sides stand respectively with side support clamping piece and horizontal support clamping piece again, the arc surface of eight support clamping pieces contacts with the test piece respectively, make the test piece reach four sides simple support state, wherein, the cushion above the horizontal support base 1 in the figure and below the grip block is the upper and lower cushion of test piece from taking (aircraft wing wallboard structure axle pressure test piece is general from having the cushion of being convenient for load). In order to make the testing result of the axle pressure test accurate and reliable, it is necessary to ensure that the test piece and each part of the clamp are tightly connected and fastened by bolts to prevent loosening or slipping, the clamping completion effect is as shown in fig. 2, and the loading of the axle pressure test is realized by controlling the distance between the upper clamping plate and the horizontal base by the testing machine.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (8)
1. The utility model provides a shaft pressure test anchor clamps which characterized in that: including horizontal support base (1), install left stand (2), right stand (3) that can freely slide from front to back in horizontal support base (1) both sides to and realize the test piece clamping assembly who is connected through bolt and left stand (2), right stand (3), test piece clamping assembly is including installing left front side support clamping piece (4), left back side support clamping piece (6) on left stand (2), install right front side support clamping piece (5), right back side support clamping piece (7) on right stand (3), and horizontal support clamping piece I (8), horizontal support clamping piece II (9), horizontal support clamping piece III (10), horizontal support clamping piece IV (11) and last grip block (12), horizontal support clamping piece I (8), horizontal support clamping piece II (9), horizontal support clamping piece III (10), the left and right sides of horizontal support clamping piece IV (11) link to each other with left front side support clamping piece (4), left back side support clamping piece (6), right front side support clamping piece (5), right side support clamping piece (7), form two centre gripping frame upper clamping pieces between two horizontal clamping pieces (12) on two rectangle clamping frames through the bolt respectively.
2. An axial compression test fixture as defined in claim 1, wherein: the horizontal base (1) is characterized in that a T-shaped groove for installing the left upright post (2) and the right upright post (3) is formed in a bottom plate of the horizontal base, the left upright post (2) and the right upright post (3) are relatively fixed through bolts, and test pieces with different sizes can be adapted through movement of the left upright post (2) and the right upright post (3) in the T-shaped groove.
3. An axial compression test fixture as defined in claim 2, wherein: the bottom plates of the left upright post (2) and the right upright post (3) are provided with elliptical holes matched with bolts, and the left upright post (2) and the right upright post (3) can be subjected to front-back fine adjustment through the elliptical holes so as to ensure that a loading axis passes through the rigid center of the test piece.
4. A shaft pressure test fixture as defined in claim 3, wherein: the inner sides of the left upright post (2) and the right upright post (3) are provided with bolt holes for installing a left front side supporting clamping piece (4), a left rear side supporting clamping piece (6), a right front side supporting clamping piece (5), a right rear side supporting clamping piece (7), a horizontal supporting clamping piece I (8), a horizontal supporting clamping piece II (9), a horizontal supporting clamping piece III (10) and a horizontal supporting clamping piece IV (11).
5. An axial compression test fixture as defined in claim 2, wherein: the front side and the rear side of the left upright post (2) and the right upright post (3) are provided with reinforcing ribs, so that the stability of the upright posts is ensured.
6. An axial compression test fixture as defined in claim 4, wherein: the left front side supporting clamping piece (4), the left rear side supporting clamping piece (6), the right front side supporting clamping piece (5) and the right rear side supporting clamping piece (7) are respectively connected with the left stand column (2) and the right stand column (3) through bolts, and in addition, one side with an arc is contacted with the test piece, so that the left and right of the test piece are in a simply supported state.
7. An axial compression test fixture as defined in claim 4, wherein: the horizontal support clamping piece I (8), the horizontal support clamping piece II (9), the horizontal support clamping piece III (10) and the horizontal support clamping piece IV (11) are arranged on the upper side and the lower side of the left front side support clamping piece (4), the left rear side support clamping piece (6), the right front side support clamping piece (5) and the right rear side support clamping piece (7), and the middle is provided with an arc part to be contacted with the test piece, so that the test piece is in a simply supported state up and down.
8. An axial compression test fixture as defined in claim 2, wherein: the loading of test pieces is realized by controlling the distance between the upper clamping plate (12) and the horizontal base (1) through the testing machine, and the cylindrical rods on the upper clamping plate (12) and the horizontal base (1) are directly clamped on the universal testing machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111513801.4A CN114166622B (en) | 2021-12-07 | 2021-12-07 | Shaft pressure test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111513801.4A CN114166622B (en) | 2021-12-07 | 2021-12-07 | Shaft pressure test fixture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114166622A CN114166622A (en) | 2022-03-11 |
| CN114166622B true CN114166622B (en) | 2023-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111513801.4A Active CN114166622B (en) | 2021-12-07 | 2021-12-07 | Shaft pressure test fixture |
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| CN (1) | CN114166622B (en) |
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| JP3106850U (en) * | 2004-07-28 | 2005-01-27 | 川鉄テクノリサーチ株式会社 | Specimen holding jig for shear test |
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| CN103293056A (en) * | 2013-04-19 | 2013-09-11 | 空军工程大学 | Stiffened plate structure axial compression stability test clamp and method |
| CN103969118A (en) * | 2014-05-16 | 2014-08-06 | 北京航空航天大学 | Novel composite material unnotched compression test fixture |
| CN106813981A (en) * | 2017-02-13 | 2017-06-09 | 哈尔滨工业大学 | A kind of tensile fatigue test machine |
| CN107219068A (en) * | 2017-06-13 | 2017-09-29 | 哈尔滨工程大学 | Reinforcement pole-shell structure axial compression test device |
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| CN214200948U (en) * | 2020-12-29 | 2021-09-14 | 中国航空工业集团公司西安飞机设计研究所 | Clamping device for honeycomb sandwich wallboard shear test |
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2021
- 2021-12-07 CN CN202111513801.4A patent/CN114166622B/en active Active
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|---|---|---|---|---|
| JP3106850U (en) * | 2004-07-28 | 2005-01-27 | 川鉄テクノリサーチ株式会社 | Specimen holding jig for shear test |
| KR20090048696A (en) * | 2007-11-12 | 2009-05-15 | 재단법인 포항산업과학연구원 | Jig for universal testing machine |
| KR20130053069A (en) * | 2011-11-14 | 2013-05-23 | 강원대학교산학협력단 | Specimen clamping structure of tension-compression tester |
| CN103293056A (en) * | 2013-04-19 | 2013-09-11 | 空军工程大学 | Stiffened plate structure axial compression stability test clamp and method |
| CN103969118A (en) * | 2014-05-16 | 2014-08-06 | 北京航空航天大学 | Novel composite material unnotched compression test fixture |
| CN106813981A (en) * | 2017-02-13 | 2017-06-09 | 哈尔滨工业大学 | A kind of tensile fatigue test machine |
| CN107219068A (en) * | 2017-06-13 | 2017-09-29 | 哈尔滨工程大学 | Reinforcement pole-shell structure axial compression test device |
| CN214200947U (en) * | 2020-12-29 | 2021-09-14 | 中国航空工业集团公司西安飞机设计研究所 | Test fixture for axial compression loading of simply supported wallboard |
| CN214200948U (en) * | 2020-12-29 | 2021-09-14 | 中国航空工业集团公司西安飞机设计研究所 | Clamping device for honeycomb sandwich wallboard shear test |
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| CN114166622A (en) | 2022-03-11 |
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