CN212159401U - Material bending test fixture - Google Patents
Material bending test fixture Download PDFInfo
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- CN212159401U CN212159401U CN202020959544.1U CN202020959544U CN212159401U CN 212159401 U CN212159401 U CN 212159401U CN 202020959544 U CN202020959544 U CN 202020959544U CN 212159401 U CN212159401 U CN 212159401U
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- force application
- bending test
- test fixture
- guide rail
- spline
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Abstract
The utility model belongs to the technical field of tool fixtures, in particular to a material bending test fixture, which comprises two side force application points and a middle force application point positioned between the two side force application points, wherein the force application directions of the side force application points and the middle force application point are opposite; the distance between the two side force application points is movably arranged, and the middle force application point is movably arranged relative to the positions of the two side force application points. In the utility model, the side force application points act on the two side positions of the sample strip, while the middle force application point acts on a certain position between the two side force application points of the sample strip, so that the sample strip is bent by opposite acting forces to achieve the purpose of testing; the distance that activity set up between two side position application of force points is applicable in the spline of multiple length, makes the crooked test fixture of material can satisfy the demand of current combined material static bending test and dynamic bending test through above-mentioned setting.
Description
Technical Field
The utility model belongs to the technical field of frock clamp, concretely relates to crooked test fixture of material.
Background
The application of carbon fiber, glass fiber and other polymer fiber reinforced composite materials in the industries of wind power, aerospace, rail transit and the like is more and more extensive, and the designability of the composite materials provides a wide space for the application of the composite materials. The design of the material needs to take the performance data of the material as input and take the performance test result of the material as check, so the mechanical performance test of the composite material is a key ring for development and application of the composite material.
In the process of testing the composite material, the types of data to be tested are more, but the bending test is taken as a basic test item and is always valued by related technical personnel, at present, a clamp used for the bending test cannot be suitable for spline structures of various sizes, a plurality of different test clamps are required for testing the spline structures of various sizes, and the use cost of the clamp is invisibly increased. Therefore, a fixture that can perform static bending tests and dynamic bending tests of full stress ratio for different size splines is urgently needed by those skilled in the art.
In view of the above, the present inventors have conducted extensive practical experience and professional knowledge for many years in engineering application of such products, and have conducted active research and innovation in cooperation with the application of the theory, so as to create a clamp capable of satisfying both static bending test and dynamic bending test of the material with full stress ratio, and thus, the clamp is more practical.
SUMMERY OF THE UTILITY MODEL
The to-be-solved problem of the utility model is to provide a crooked test fixture of material can satisfy present combined material's crooked test demand.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
a material bending test fixture comprises two side force application points and a middle force application point positioned between the two side force application points, wherein the force application directions of the side force application points and the middle force application point are opposite;
the distance between the two side force application points is movably arranged, and the middle force application point is movably arranged relative to the positions of the two side force application points.
Further, the middle force application point comprises a first guide rail and at least one pressing block structure movably arranged along the first guide rail, and the pressing block structure is provided with a cavity for a spline to penetrate through.
Further, the briquetting structure includes along the mobile support that first guide rail activity set up, and for the compact heap that the mobile support rotated the setting, be provided with on the compact heap be used for right the spline carries out the U type cell body of holding, the open end of U type cell body is provided with the apron, be used for right the open end is closed.
Further, the distance between the two side walls of the compression block, which are attached to the spline in parallel, is movably arranged.
Furthermore, an auxiliary positioning structure is movably arranged on the first guide rail, and the auxiliary positioning structure is attached to two side faces of the sample strip.
Further, the auxiliary positioning structure comprises a general mounting seat movably arranged along the first guide rail, and a positioning groove fixed by a connecting piece through the general mounting seat, wherein the positioning groove is attached to two side faces of the sample strip.
Further, the side force application point comprises a second guide rail and a clamping groove movably arranged along the second guide rail, and the clamping groove is provided with a cavity for the spline to penetrate through.
Further, the draw-in groove includes along the removal mounting structure of second guide rail activity setting, and for remove the fixed knot structure that mounting structure rotated the setting, it is right to be provided with on the fixed knot structure the spline carries out the U type cell body of holding, the open end of U type cell body is provided with the backing plate, is used for right the open end carries out the closure.
Further, the movable mounting structure comprises a seat body structure movably arranged along the second guide rail and a connecting structure connected with the seat body structure and the fixed structure, and the connecting structure is rotatably connected with the fixed structure and the seat body structure.
Further, the distance between the fixing structure and at least two side walls of the spline in parallel attachment is movably arranged.
Through the technical scheme, the beneficial effects of the utility model are that:
in the utility model, the side force application points act on the two side positions of the sample strip, while the middle force application point acts on a certain position between the two side force application points of the sample strip, so that the sample strip is bent by opposite acting forces to achieve the purpose of testing; the distance that activity set up between two side position application of force points is applicable in the spline of multiple length, makes the crooked test fixture of material can satisfy the demand of current combined material static bending test and dynamic bending test through above-mentioned setting.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of a material bending test fixture;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a schematic structural view of a middle force application point;
FIG. 4 is an enlarged view of a portion of FIG. 3 at A;
FIG. 5 is a schematic view of a lateral force application point;
FIG. 6 is a schematic structural view of a card slot (including a backing plate);
reference numerals: side position application of force point 1, second guide rail 11, draw-in groove 12, fixed knot constructs 121, pedestal structure 122, connection structure 123, backing plate 13, middle part application of force point 2, first guide rail 21, briquetting structure 22, remove support 221, compact heap 222, apron 223, auxiliary positioning structure 23, general mount pad 231, constant head tank 232, spline 3.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
This embodiment is written in a progressive manner.
As shown in fig. 1 and 2, the material bending test fixture comprises two lateral force application points 1 and a middle force application point 2 located between the two lateral force application points 1, wherein the force application directions of the lateral force application points 1 and the middle force application point 2 are opposite; wherein, the distance activity between two side position application of force points 1 sets up, and middle part application of force point 2 sets up for the position activity of two side position application of force points 1.
In the embodiment, the lateral force application points 1 act on the two side positions of the spline 3, and the middle force application point 2 acts on a certain position between the two side force application points 1 of the spline 3, so that the spline 3 is bent by opposite acting forces to achieve the purpose of testing; the distance movably arranged between the two lateral force application points 1 can be suitable for splines 3 with various lengths; in the use, middle part application of force point 2 mostly acts on the middle part position between the both sides position application of force point 1, but even if the position is for the middle part skew, also is the utility model discloses an in the protection scope, make the crooked test fixture of material can satisfy the demand of the crooked test of current combined material through above-mentioned setting.
Preferably, the middle force application point 2 includes a first guide rail 21 and at least one compact structure 22 movably disposed along the first guide rail 21, and the compact structure 22 has a cavity through which the spline 3 passes. Briquetting structure 22 is at the in-process of testing, and spline 3 laminating carries out the transmission of force, and first guide rail 21 bears the force that test equipment exerted on the one hand to transmit power for briquetting structure 22, on the other hand are used for carrying out the regulation of position to briquetting structure 22, thereby realize the regulation to spline 3 application of force position.
In the specific implementation process, the pressing block structure 22 includes a movable support 221 movably arranged along the first guide rail 21, and a pressing block 222 rotatably arranged relative to the movable support 221, a U-shaped groove body used for accommodating the sample strip 3 is arranged on the pressing block 222, and a cover plate 223 is arranged at an opening end of the U-shaped groove body and used for closing the opening end. In this preferred scheme, as shown in fig. 3, optimize briquetting structure 22, when aiming at spline 3 to produce the bending, briquetting structure 22 still can carry out the application of force rather than better laminating, and is concrete, remove support 221 and be the rigid structure, and compact heap 222 and spline 3 laminating back, the accessible is for removing the rotation of support 221 and in the in-process to spline 3 application of force and the better laminating of spline 3, and apron 223 can guarantee that spline 3 is by effectual restriction in the U type cell to guarantee the stability and the validity of test.
Wherein, compact heap 222 sets up with the parallel range activity between the both sides wall of laminating of spline 3 at least to make when testing spline 3 to multiple size, can adjust the distance between the both sides wall, thereby make briquetting structure 22 be applicable to and carry out the commonality test to spline 3 of multiple cross sectional dimension.
As another way for achieving the purpose of universality, in the preferred embodiment, the auxiliary positioning structure 23 is movably disposed on the first guide rail 21, and the auxiliary positioning structure 23 is attached to two side surfaces of the sample strip 3, as shown in fig. 4, in the implementation process, the position of the sample strip 3 is determined by the auxiliary positioning structure 23, and the positioning requirements of the pressing block 222 and the sample strip 3 can be removed, so that the functional requirements of the pressing block 222 are reduced, and only the force transmission of attaching with the sample strip 3 is required, thereby reducing the difficulty of processing the pressing block.
Specifically, as shown in fig. 4, the auxiliary positioning structure 23 includes a universal mounting seat 231 movably disposed along the first guide rail 21, and a positioning groove 232 fixed to the universal mounting seat 231 through a connecting member, and the positioning groove 232 is attached to two side surfaces of the spline 3. Wherein, when testing spline 3 to the difference, the accessible removes the mode of connecting piece and changes constant head tank 232, convenient and fast, the advantage is more prominent when briquetting structure 22 sets up a plurality ofly for this kind of mode, all set up two briquetting structures 22 as in fig. 1~ 3, and set up an auxiliary positioning structure 23, two briquetting structures 22 symmetry set up in auxiliary positioning structure 23 both sides, at this moment, auxiliary positioning structure 23 is fixing a position the back to spline 3, the extrusion application of force that spline 3 set for the position all can be realized to two briquetting structures 22, whole test fixture's structure complexity has been reduced.
Preferably, the lateral force application point 1 includes a second guide rail 11 and a slot 12 movably disposed along the second guide rail 11, and the slot 12 has a cavity through which the spline 3 passes.
Wherein, draw-in groove 12 includes the removal mounting structure who sets up along the activity of second guide rail 11 to and rotate the fixed knot who sets up 121 for removing the mounting structure, be provided with the U type cell body that is used for carrying out the holding to spline 3 on the fixed knot constructs 121, the open end of U type cell body is provided with backing plate 13 for carry out the closure to the open end.
As shown in fig. 5 and 6, the spline 3 is effectively fixed by the arrangement of the clamping groove 12 and the backing plate 13, and the situation that the test result is influenced by the displacement of the spline 3 in the test process is avoided. Two side force application points 1 may share one second guide rail 11, or two side force application points may be used, but it is necessary to ensure that the two second guide rails 11 have coinciding guide directions.
By the above-described manner of rotational arrangement, the same object as in the above-described embodiment can be achieved, that is, the U-shaped groove body and the spline 3 are better fitted, but since the deformation amount of the edge portion of the spline 3 with respect to the middle portion is larger, when such deformation is completely accommodated by the rotation of the fixing structure 121 with respect to the movable mounting structure, the angle of relative rotation between the two is too large, and the component force received by the movable mounting structure easily causes the movement thereof with respect to the position of the second guide rail 11. In order to avoid the above situation, the movable mounting structure includes a seat structure 122 connected to the second guide rail 11, and a connecting structure 123 connecting the seat structure 122 and the fixed structure 121, where the connecting structure 123 is rotationally connected to both the fixed structure 121 and the seat structure 122, and through the additional rotation point, the adaptability to the deformation of the spline 3 is enhanced, and the stress of the whole test fixture is more balanced, and the structure is more stable.
Preferably, the fixing structure 121 is movably disposed at least in a distance between the two side walls attached in parallel to the splines 3, so that the complexity of replacement is avoided by adjusting the structure.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The material bending test fixture is characterized by comprising two side force application points (1) and a middle force application point (2) positioned between the two side force application points (1), wherein the force application directions of the side force application points (1) and the middle force application point (2) are opposite;
the distance between the two lateral force application points (1) is movably arranged, and the middle force application point (2) is movably arranged relative to the positions of the two lateral force application points (1).
2. The material bending test fixture according to claim 1, wherein the middle force application point (2) comprises a first guide rail (21) and at least one press block structure (22) movably arranged along the first guide rail (21), the press block structure (22) having a cavity through which a spline (3) passes.
3. The material bending test fixture according to claim 2, wherein the pressing block structure (22) comprises a movable support (221) movably arranged along the first guide rail (21), and a pressing block (222) rotatably arranged relative to the movable support (221), a U-shaped groove body used for accommodating the spline (3) is arranged on the pressing block (222), and a cover plate (223) is arranged at an open end of the U-shaped groove body and used for closing the open end.
4. The material bending test fixture according to claim 3, wherein the compression block (222) is movably disposed at least in a distance between two side walls which are attached in parallel to the splines (3).
5. The material bending test fixture according to claim 2, wherein an auxiliary positioning structure (23) is movably arranged on the first guide rail (21), and the auxiliary positioning structure (23) is attached to two side surfaces of the spline (3).
6. The material bending test fixture according to claim 5, wherein the auxiliary positioning structure (23) comprises a universal mounting seat (231) movably arranged along the first guide rail (21), and a positioning groove (232) fixed with the universal mounting seat (231) through a connecting piece, wherein the positioning groove (232) is attached to two side surfaces of the spline (3).
7. The material bending test fixture according to any one of claims 1 to 6, wherein the lateral force application point (1) comprises a second guide rail (11) and a clamping groove (12) movably arranged along the second guide rail (11), and the clamping groove (12) is provided with a cavity for a spline (3) to penetrate through.
8. The material bending test fixture according to claim 7, wherein the clamping groove (12) comprises a movable mounting structure movably arranged along the second guide rail (11) and a fixing structure (121) rotatably arranged relative to the movable mounting structure, a U-shaped groove body used for accommodating the spline (3) is arranged on the fixing structure (121), and a base plate (13) is arranged at an opening end of the U-shaped groove body and used for closing the opening end.
9. The material bending test fixture according to claim 8, wherein the movable mounting structure comprises a seat structure (122) movably arranged along the second guide rail (11), and a connecting structure (123) connecting the seat structure (122) and the fixed structure (121), the connecting structure (123) being rotatably connected with respect to both the fixed structure (121) and the seat structure (122).
10. The material bending test fixture according to claim 8, wherein the fixing structure (121) is movably disposed at least in a distance between two side walls which are attached in parallel to the splines (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020959544.1U CN212159401U (en) | 2020-05-29 | 2020-05-29 | Material bending test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020959544.1U CN212159401U (en) | 2020-05-29 | 2020-05-29 | Material bending test fixture |
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| Publication Number | Publication Date |
|---|---|
| CN212159401U true CN212159401U (en) | 2020-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020959544.1U Active CN212159401U (en) | 2020-05-29 | 2020-05-29 | Material bending test fixture |
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| CN (1) | CN212159401U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114935499A (en) * | 2022-03-30 | 2022-08-23 | 荣耀终端有限公司 | Clamping device and testing arrangement |
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2020
- 2020-05-29 CN CN202020959544.1U patent/CN212159401U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114935499A (en) * | 2022-03-30 | 2022-08-23 | 荣耀终端有限公司 | Clamping device and testing arrangement |
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