CN206671065U - One kind becomes size equal thickness composite panels low velocity impact test fixture - Google Patents
One kind becomes size equal thickness composite panels low velocity impact test fixture Download PDFInfo
- Publication number
- CN206671065U CN206671065U CN201720342433.4U CN201720342433U CN206671065U CN 206671065 U CN206671065 U CN 206671065U CN 201720342433 U CN201720342433 U CN 201720342433U CN 206671065 U CN206671065 U CN 206671065U
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- China
- Prior art keywords
- lower cover
- central shaft
- contiguous block
- composite panels
- low velocity
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Abstract
The utility model discloses one kind to become size equal thickness composite panels low velocity impact test fixture, including upper cover plate, lower cover, central shaft, limiting plate, connecting rod and contiguous block；The central shaft is threadingly attached at lower cover bottom centre, sequentially passes through shoulder hole with manhole by dormant bolt to be fastenedly connected upper cover plate and lower cover；Four pieces of limiting plates are arranged on four straight trough tracks of lower cover by its base slider respectively, two contiguous blocks for being provided with circular groove are set on central shaft, and two limiting plate top shoe bottoms being oppositely arranged are hinged by the two side of the connecting rod and a contiguous block of equal length respectively, synchronous backward of two limiting plates being oppositely arranged along straight trough track where it is driven to move along moving for central shaft by contiguous block.The utility model can realize the continuous variable of sample dimensions on impact apparatus, and ensure shock point in the center of composite panels, effectively reduce experimentation cost, and simple to operate and fastening is reliable.
Description
Technical field
The present invention relates to a kind of low velocity impact test fixture, and in particular to it is low that one kind becomes size equal thickness composite panels
Fast impact apparatus.
Background technology
Advanced composite material is because of mechanical properties such as its outstanding specific strength and specific stiffness, at present in civilian each industrial production
Obtained a wide range of applications in department and aerospace flight vehicle structure.Composite is applied in each structure member of aircraft,
Not only improve the aeroelasticity of aircraft and the combination property such as stealthy, and it is high performance to each structure member of aircraft, small-sized
Change and lighting plays vital effect.
Composite material structural member is inevitably rushed during manufacture and use by the low speed low energy of foreign object
Hit.By taking aero-engine as an example, support member of the composite casing as aeroengine rotor, in the mistake for manufacturing and using
Cheng Zhong, two class low speed low energy impacts can be run into：1) manufacture or maintenance process in instrument shock of a fall；2) run when taking off or land
The impact of the formation such as rubble, screw on road.Under the effect of low speed low energy impact load, metallic material components with impact site and its
The principal mode for being plastic deformation to energy absorption of adjacent domain, composite is with recoverable elastic deformation and expendable
The damage and failure of different mode absorbs energy, and its damage and failure pattern is mainly shown as the fine shearing of fibrous fracture, MATRIX CRACKING, base
With layering etc., these impact injurys can seriously undermine the intensity of composite material component.
Impact test is to examine the important research means of mechanical property and damage and failure of the material under shock loading.Fixture
It is a critically important link in impact test, gripping for test specimen is completed by fixture.There is no reliable fixture, impact
Impulsive force under impulsive force versus time curve and real impact load that the force value display device of testing machine obtains is at any time
Between variation relation have differences, there is also difference for the impact injury for testing under obtained impact injury and real working condition.Therefore,
Rationally correctly design and use fixture is advantageous to being smoothed out for experiment.
At present, the design of impact apparatus is empirical, for the test specimen of specific dimensions, in the upper and lower of fixture
Groove is carved with cover plate, to the position of fixed test specimen, i.e., designs clamp for machining for specific sample dimensions.Different sizes
Test specimen, then need to process different impact apparatus, experimentation cost greatly increases.
The content of the invention
Goal of the invention：In order to overcome the deficiencies in the prior art, it is compound that the present invention provides a kind of change size equal thickness
Material plate low velocity impact test fixture, have the characteristics that simple in construction, easy to use, fastening is reliable, impact examination can be realized
The continuous variable of sample dimensions on fixture is tested, greatlys save experimentation cost.
Technical scheme：To achieve the above object, the technical solution adopted by the present invention is：
One kind becomes size equal thickness composite panels low velocity impact test fixture, including upper cover plate, lower cover, center
Axle, limiting plate, connecting rod and contiguous block；
Wherein, rectangular through-hole is provided with the middle part of the upper cover plate, and four vertex of upper cover plate are provided with shoulder hole；Institute
State and be provided with rectangle blind hole in the middle part of the top surface of lower cover, and central shaft is removable installed at lower cover bottom centre；Lower cover
The manhole corresponding with shoulder hole is provided with plate, shoulder hole is sequentially passed through with manhole by dormant bolt to fasten
Connect upper cover plate and lower cover；
Two relative middle side edges are provided with straight trough track on the same line, and the bottom surface of limiting plate on lower cover
Middle part is provided with sliding block, and four pieces of limiting plates are arranged on four straight trough tracks by its base slider respectively, spacing so as to ensure
Linear slide of the plate perpendicular to lower cover side；Two contiguous blocks for being provided with circular groove are set on central shaft, and are set relatively
The two limiting plate top shoe bottoms put are hinged by the two side of the connecting rod and a contiguous block of equal length respectively, pass through company
Connect block drives synchronous backward of two limiting plates being oppositely arranged along straight trough track where it to move along moving for central shaft.Pass through
Symmetric design ensure that the synchronous backward motion of two limiting plates in same direction, so as to ensure that the test specimen of size continuous variable is pacified
Dress rear center point overlaps with the central point of fixture all the time, that is, ensures shock point in the center of composite material test piece.
Preferably, connect to form revolute pair by bearing pin between the connecting rod and sliding block, contiguous block, connection is simple and loads and unloads
It is convenient.
Preferably, the central shaft is threadingly attached at lower cover bottom centre, stable connection and easy to loading and unloading.
Preferably, two upper push nut are socketed with the central shaft, realize contiguous block in by rotating upper push nut
The position adjustment of mandrel, and then the position adjustment for the limiting plate being connected with contiguous block is realized, efficient and cost easy to control is relatively low.
Preferably, neck is provided with the middle part of the bottom surface of the lower cover, and rectangular recess is provided with the middle part of neck, test specimen peace
Dress rear jig is installed on by rectangular recess on the boss of impact test machine worktable, and it is recessed that central shaft is threadingly attached to rectangle
At groove center.
Beneficial effect：A kind of change size equal thickness composite panels low velocity impact test fixture provided by the invention, phase
For prior art, there is advantages below：1st, simple to operate, fastening is reliable, can realize sample dimensions on impact apparatus
Continuous variable, greatly save experimentation cost；2nd, direction limiting plate is realized by the connecting rod of equal length in same direction
Synchronous backward moves, and can ensure the central point and fixture of test specimen when four limiting plates contact with four sides of test specimen simultaneously
Central point overlap, so as to ensure shock point in the center of composite material test piece.
Brief description of the drawings
Fig. 1 is a kind of assembling schematic diagram for becoming size equal thickness composite panels low velocity impact test fixture of the present invention；
Fig. 2 is the scheme of installation of structure on lower cover and central shaft in the present invention；
Fig. 3 is the structural representation of lower cover in the present invention；
Fig. 4 is the scheme of installation of central shaft of the present invention and lower cover；
Fig. 5 is the structural representation of limiting plate in the present invention；
Fig. 6 is the structural representation of contiguous block in the present invention；
Figure includes：1st, upper cover plate, 2, limiting plate, 3, lower cover, 4, contiguous block, 5, upper push nut, 6, central shaft, 7, even
Bar, 8, rectangular through-hole, 9, shoulder hole, 10, rectangle blind hole, 11, manhole, 12, straight trough track, 13, sliding block, 14, circular logical
Groove, 15, neck, 16, rectangular recess.
Embodiment
The present invention is further described below in conjunction with the accompanying drawings.
It is as shown in Figure 1 a kind of change size equal thickness composite panels low velocity impact test fixture, including upper cover plate 1,
Lower cover 3, central shaft 6, limiting plate 2, connecting rod 7 and contiguous block 4；
Wherein, the middle part of upper cover plate 1 is provided with rectangular through-hole 8, and four vertex of upper cover plate 1 are provided with shoulder hole
9；Rectangle blind hole 10 is provided with the middle part of the top surface of the lower cover 3, and central shaft 6 is removable installed in the bottom of lower cover 3
At the heart；The manhole 11 corresponding with shoulder hole 9 is provided with lower cover 3, by dormant bolt sequentially pass through shoulder hole 9 with
Manhole 11 is fastenedly connected upper cover plate 1 and lower cover 3；
As shown in figure 3, two middle side edges relative on lower cover 3 are provided with straight trough track 12 on the same line,
And sliding block 13 is provided with the middle part of the bottom surface of limiting plate 2, four pieces of limiting plates 2 are arranged at four straight troughs by its base slider 13 respectively
On track 12, so as to ensure linear slide of the limiting plate 2 perpendicular to the side of lower cover 3；As shown in Fig. 2 it is provided with circular groove 14
Two contiguous blocks 4 be set on central shaft 6, and the bottom of two be oppositely arranged limiting plate, 2 top shoe 13 passes through length respectively
The two side of equal connecting rod 7 and a contiguous block 4 is hinged, and drives what is be oppositely arranged along moving for central shaft 6 by contiguous block 4
Synchronous backward of two limiting plates 2 along straight trough track 12 where it moves.
In the present embodiment, two upper push nut 5 are socketed with the central shaft 6, connection is realized by rotating upper push nut 5
Position adjustment of the block 4 on central shaft 6；As shown in Figure 5,6, connected between the connecting rod 7 and sliding block 13, contiguous block 4 by bearing pin
Connect to form revolute pair.
As shown in figure 4, neck 15 is provided with the middle part of the bottom surface of the lower cover 3, and it is recessed to be provided with rectangle in the middle part of neck 15
Groove 16, central shaft 6 are threadingly attached at the center of rectangular recess 16.
The embodiment of the present invention is as follows：
In use, central shaft 6 is threadingly attached at the center of rectangular recess 16, and by two contiguous blocks 4 and two
Upper push nut 5 is set on central shaft 6 according to the order shown in Fig. 2；Four limiting plates 2 are separately mounted to the straight of lower cover 3
In groove track 12, and according to shown in Fig. 2, two limiting plates 2 in same direction are connected to same company by isometric connecting rod 7
Connect on block 4；Position of the contiguous block 4 on central shaft 6 is adjusted by rotating upper push nut 5, and then limiting plate is driven by connecting rod 7
2 along straight trough track 12 slip so that the distance between limiting plate 2 being oppositely arranged is more than the chi of test specimen in the same direction
It is very little；
By rectangle equal thickness composite material test piece be placed on the upper surface of lower cover 3, four limiting plates 2 centre position,
And the thickness of test specimen need to be more than the thickness of limiting plate 2；Rotate the upper push nut 5 of lower section so that contiguous block 4 thereon is along central shaft
Moved down on 6, limiting plate 2 is driven to the center of lower cover 3 from connecting rod 7 in the presence of the gravity of contiguous block 4 and moved, to limiting plate
2 with test specimen contact aside, it is now upper gap occur between push nut 5 and contiguous block 4, test specimen ensure that by isometric connecting rod 7
It is centrally located in this direction on the central axis of fixture；
When the center of test specimen is respectively positioned on the central axis of fixture in two vertical direction, upper cover plate 1 is positioned over test specimen
On, four through holes between the upper and lower cover plate that aligns, upper and lower cover plate is fastenedly connected using dormant bolt, so as to realize composite wood
The fastening clamp of flitch part；
Remove in order bearing pin between bearing pin between limiting plate 2 and connecting rod 7, connecting rod 7 and contiguous block 4, four it is spacing
Plate 2 and central shaft 6；The impact apparatus for fixing composite material test piece is installed by the rectangular recess 16 below lower cover
On the boss of impact test machine worktable, you can ensure center position of the impact test point in test specimen.
Experimental test shows that change size equal thickness composite panels low velocity impact test fixture of the invention can be fine
Fastening composite tabular test specimen, and ensure that test specimen is centrally located on the central axis of fixture, so as to ensure that shock point exists
The center of composite panels.The fixture can realize the continuous variable of sample dimensions, so as to solve existing impact examination
The problem of fixture testpieces size is single is tested, reduces experimentation cost.The fixture can be applicable to the tabular examination of other materials
The low velocity impact experiment of part.
Described above is only the preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (5)
1. one kind become size equal thickness composite panels low velocity impact test fixture, it is characterised in that including upper cover plate (1),
Lower cover (3), central shaft (6), limiting plate (2), connecting rod (7) and contiguous block (4)；
Wherein, rectangular through-hole (8) is provided with the middle part of the upper cover plate (1), and four vertex of upper cover plate (1) are provided with ladder
Hole (9)；Rectangle blind hole (10) is provided with the middle part of the top surface of the lower cover (3), and central shaft (6) is removable installed in lower cover
At plate (3) bottom centre；The manhole (11) corresponding with shoulder hole (9) is provided with lower cover (3), passes through dormant bolt
Shoulder hole (9) is sequentially passed through with manhole (11) to be fastenedly connected upper cover plate (1) and lower cover (3)；
Two relative middle side edges are provided with straight trough track (12) on the same line, and limiting plate (2) on lower cover (3)
Bottom surface in the middle part of be provided with sliding block (13), four pieces of limiting plates (2) are arranged at four straight trough rails by its base slider (13) respectively
On road (12)；Two contiguous blocks (4) for being provided with circular groove (14) are set on central shaft (6), and two limits being oppositely arranged
Position plate (2) top shoe (13) bottom is hinged by the connecting rod (7) and the two side of a contiguous block (4) of equal length respectively, is led to
Two limiting plates (2) that mobile drive of the contiguous block (4) along central shaft (6) be oppositely arranged are crossed along straight trough track (12) where it
Synchronous backward moves.
2. a kind of change size equal thickness composite panels low velocity impact test fixture according to claim 1, its feature
It is, the connecting rod (7) is connected to form revolute pair between sliding block (13), contiguous block (4) by bearing pin.
3. a kind of change size equal thickness composite panels low velocity impact test fixture according to claim 1, its feature
It is, the central shaft (6) is threadingly attached at lower cover (3) bottom centre.
4. a kind of change size equal thickness composite panels low velocity impact test fixture according to claim 1, its feature
It is, two upper push nut (5) is socketed with the central shaft (6), realizes that contiguous block (4) exists by rotating upper push nut (5)
Position adjustment on central shaft (6).
5. a kind of change size equal thickness composite panels low velocity impact test fixture according to claim 1, its feature
It is, neck (15) is provided with the middle part of the bottom surface of the lower cover (3), and rectangular recess (16) is provided with the middle part of neck (15),
Central shaft (6) is threadingly attached at rectangular recess (16) center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720342433.4U CN206671065U (en) | 2017-04-01 | 2017-04-01 | One kind becomes size equal thickness composite panels low velocity impact test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720342433.4U CN206671065U (en) | 2017-04-01 | 2017-04-01 | One kind becomes size equal thickness composite panels low velocity impact test fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206671065U true CN206671065U (en) | 2017-11-24 |
Family
ID=60367599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720342433.4U Withdrawn - After Issue CN206671065U (en) | 2017-04-01 | 2017-04-01 | One kind becomes size equal thickness composite panels low velocity impact test fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206671065U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106908316A (en) * | 2017-04-01 | 2017-06-30 | 南京航空航天大学 | One kind becomes size equal thickness composite panels low velocity impact test fixture |
-
2017
- 2017-04-01 CN CN201720342433.4U patent/CN206671065U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106908316A (en) * | 2017-04-01 | 2017-06-30 | 南京航空航天大学 | One kind becomes size equal thickness composite panels low velocity impact test fixture |
| CN106908316B (en) * | 2017-04-01 | 2023-09-26 | 南京航空航天大学 | Variable-size equal-thickness composite plate low-speed impact test fixture |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20171124 Effective date of abandoning: 20230926 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20171124 Effective date of abandoning: 20230926 |