CN213337055U - Shear test fixture system - Google Patents
Shear test fixture system Download PDFInfo
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- CN213337055U CN213337055U CN202021825066.1U CN202021825066U CN213337055U CN 213337055 U CN213337055 U CN 213337055U CN 202021825066 U CN202021825066 U CN 202021825066U CN 213337055 U CN213337055 U CN 213337055U
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Abstract
The utility model relates to a shear test anchor clamps system, including the loading arm that is used for exerting the shearing force and the centre gripping arm that is used for fixed test piece, the loading arm with the centre gripping arm encloses to form the loading frame, the one end of loading arm slides and sets up on the centre gripping arm, the other end is fixed on the centre gripping arm, the loading arm with the centre gripping arm all about the central centrosymmetry of loading frame, the slip direction of loading arm with the direction of shearing force is parallel. The utility model discloses a central symmetry's structure utilizes the principle such as shearing stress each other, carries out the loading to the testpieces that the symmetry set up, can satisfy the pure shear load test requirement of combined material testpieces, and traditional diagonal angle tensile anchor clamps shear load anchor clamps system relatively, has economic nature, symmetry, replaceability, a plurality of advantages such as commonality.
Description
Technical Field
The utility model relates to a combined material is experimental, specifically is a shear test anchor clamps system.
Background
The high-performance carbon fiber and the composite material are strategic new materials indispensable to national economy and national defense construction, are the key directions for the research of 21 st century multifunctional, high-performance and intelligent new materials, are material bases for developing high and new technologies, national defense advanced technologies and strategic emerging industries in all countries of the world, and are widely applied to the fields of aerospace, wind power blades, new energy automobiles, rail transit, pressure vessels, sports and leisure and the like.
The application of the composite material is accompanied with a large amount of tests and verification work, the macroscopic mechanical property of the composite material laminate can be verified through the tests, the structural characteristics of the composite material can also be tested and researched, and the pure shear test of the composite material is a very important content.
At present, common shearing clamps are required to clamp four tested edges, a rotating shaft is designed at opposite angles, the four edges are generally clamped and the opposite angles are stretched, the clamp in the loading mode can only be used for a test piece with a specific size, and the clamp cost is high. If the rigidity of the clamp is not matched with the test piece, the shear flow of the examination and verification area of the test piece is not uniform enough, and the precision of the test result is influenced to a certain extent.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve current shearing jig and need carry out the loaded problem to the four sides, the utility model discloses a shearing test anchor clamps system, including the loading arm that is used for applying the shearing force and the centre gripping arm that is used for the fixed test piece, loading arm with the centre gripping arm encloses to form the loading frame, the one end of loading arm slides and sets up on the centre gripping arm, the other end is fixed on the centre gripping arm, loading arm with the centre gripping arm all about the central centrosymmetry of loading frame, the slip direction of loading arm with the direction of shearing force is parallel.
Preferably, the clamping arm comprises a clamping part and a sliding part, the sliding part comprises a first U-shaped frame and a connecting plate fixedly connected with the first U-shaped frame, the clamping part comprises a second U-shaped frame and a fixing plate fixedly connected with the second U-shaped frame, the second U-shaped frame is fixed in the first U-shaped frame, and the second U-shaped frame is used for fixing the clamping groove of the test piece. The clamping part is inserted in the sliding part and is tightly attached, so that the clamping part is convenient to detach and install. The test piece is fixed in the U-shaped frame II, and the test of test pieces with different sizes can be met.
Furthermore, a plurality of mounting holes are formed in the first U-shaped frame and the second U-shaped frame, a plurality of positioning holes corresponding to the mounting holes are also formed in the test piece, and the sliding part, the clamping part and the test piece are fixedly connected through locking screws in the mounting holes and the positioning holes. The structure in adoption hole can carry out the adjustment of testpieces position through installing the position in the hole of difference, can satisfy not unidimensional testpieces and carry out fixed mounting, also makes things convenient for clamping part and sliding part to carry out the dismouting simultaneously.
Preferably, the connecting plate is provided with a sliding groove, one end of the loading arm is provided with a guide pillar, the guide pillar is slidably arranged in the sliding groove, and the sliding direction of the guide pillar is parallel to the direction of the shearing force. The guide post slides in the sliding groove, and the loading arm can freely slide left and right, so that a shear static test or a fatigue test can be performed.
Furthermore, the loading arm comprises two loading plates, the two loading plates are respectively positioned at two sides of the fixing plate, a plurality of locking holes are formed in the two loading plates, a plurality of fixing holes are formed in the fixing plate, and locking screws penetrate through the locking holes and the fixing holes to fixedly connect the loading plates and the fixing plate. Locking screws are adopted to fix the loading plates on two sides of the fixing plate, and the structure is firm and stable.
Preferably, an installation cavity is formed between the two loading plates, and a loading piece is fixedly connected in the installation cavity. By adopting the structure of the mounting cavity, the loading piece can be replaced in position, and different testing requirements are met.
Furthermore, a plurality of first through holes are formed in the loading plate, second through holes corresponding to the first through holes are formed in the loading piece, and locking screws penetrate through the first through holes and the second through holes to fixedly connect the loading plate and the loading piece. The loading piece is fixed by adopting a structure of the first through hole and the second through hole, the first through hole and the second through hole in proper positions can be selected according to requirements, and then the loading piece is fixed on the loading plate by using locking screws.
Preferably, in order to improve the experimental accuracy and reduce the component force when the shear force is applied, the loading element is located on the transverse center line of the loading frame.
Has the advantages that: the utility model discloses a centrosymmetric structure utilizes the principle such as shearing stress each other, and the testpieces that the symmetry set up carry out the loading, can satisfy the shear loading test requirement of combined material testpieces, and the relative traditional diagonal angle tensile anchor clamps shear loading anchor clamps system, have economic nature, symmetry, replaceability, a plurality of advantages such as commonality.
Drawings
FIG. 1 is a front view of the overall structure of the present invention;
FIG. 2 is a side view of the overall structure of the present invention;
FIG. 3 is a schematic diagram of the loading plate structure of the present invention;
FIG. 4 is a schematic structural view of the test piece of the present invention;
FIG. 5 is a schematic view of the structure of the holding arm of the present invention;
FIG. 6 is a schematic view of the loading member of the present invention;
1. a loading arm; 2. a clamp arm; 2-1, a clamping part; 2-2, a sliding part; 2-1-1 and a U-shaped frame II; 2-1-2, a fixing plate; 2-2-1, a U-shaped frame I; 2-2-2, connecting plates; 3. loading a frame; 4. mounting holes; 5. a chute; 6. a guide post; 7. a loading plate; 8. a loading member; 9. locking the screw; 10. a fixing hole; 11. a lock hole; 12. a mounting cavity; 13. a first through hole; 14. a second through hole; 15. a test piece; 16. positioning holes; 17. a clamping groove.
Detailed Description
Example one
A shear test fixture system comprises a loading arm 1 and a clamping arm 2, wherein the loading arm 1 is used for applying a shear force, the clamping arm 2 is used for fixing a test piece 15, the loading arm 1 and the clamping arm 2 are enclosed to form a loading frame 3, one end of the loading arm 1 is slidably arranged on the clamping arm 2, the other end of the loading arm 1 is fixed on the clamping arm 2, the loading arm 1 and the clamping arm 2 are both symmetrical about the center of the loading frame 3, and the sliding direction of the loading arm 1 is parallel to the direction of the shear force.
The clamping arm 2 comprises a clamping part 2-1 and a sliding part 2-2, the sliding part 2-2 comprises a first U-shaped frame 2-2-1 and a connecting plate 2-2-2 fixedly connected with the first U-shaped frame 2-2-1, the clamping part 2-1 comprises a second U-shaped frame 2-1-1 and a fixing plate 2-1-2 fixedly connected with the second U-shaped frame 2-1-1, the second U-shaped frame 2-1-1 is fixed in the first U-shaped frame 2-2-1, and the second U-shaped frame 2-1-1 is used for fixing a clamping groove 17 of the test piece 15. The U-shaped frame I2-2-1 and the U-shaped frame II 2-1-1 are provided with a plurality of mounting holes 4, the test piece 15 is also provided with a plurality of positioning holes 16 corresponding to the mounting holes 4, and the sliding part 2-2, the clamping part 2-1 and the test piece 15 are fixedly connected in the mounting holes 4 and the positioning holes 16 through locking screws 9. A sliding groove 5 is formed in the connecting plate 2-2-2, a guide pillar 6 is arranged at one end of the loading arm 1, the guide pillar 6 is slidably arranged in the sliding groove 5, and the sliding direction of the guide pillar 6 is parallel to the direction of the shearing force.
The loading arm 1 comprises two loading plates 7, the two loading plates 7 are respectively located at two sides of the fixing plate 2-1-2, a plurality of locking holes 11 are formed in each of the two loading plates 7, a plurality of fixing holes 10 are formed in the fixing plate 2-1-2, and locking screws 9 penetrate through the locking holes 11 and the fixing holes 10 to fixedly connect the loading plates 7 and the fixing plate 2-1-2. A mounting cavity 12 is formed between the two loading plates 7, and a loading piece 8 is fixedly connected in the mounting cavity 12. The loading plate 7 is provided with a plurality of first through holes 13, the loading piece 8 is provided with second through holes 14 corresponding to the first through holes 13, and the locking screws 9 penetrate through the first through holes 13 and the second through holes 14 to fixedly connect the loading plate 7 and the loading piece 8. In order to improve the experimental precision and reduce the component force when the shearing force is loaded, the loading piece 8 is positioned on the transverse central line of the loading frame 3.
The working principle is as follows: the two clamping arms 2 are spliced, the U-shaped frame II 2-1-1 is inserted into the U-shaped frame I2-2-1, the U-shaped frame II 2-1-1 is tightly attached to the U-shaped frame I2-2-1, then the loading plate 7 is fixed on the upper side and the lower side of the fixing plate 2-1-2, the loading plate 7 and the fixing plate 2-1-2 are locked by using locking screws 9 through locking holes 11 and fixing holes 10, the loading piece 7 is installed on the loading plate 7, then the transverse center line of the loading frame 3 is loaded, and the locking screws 9 penetrate through the through holes I13 and the through holes II 14 to fix the loading plate 7 and the loading piece 8.
According to the size of the test piece 15 and the position needing to be adjusted, the test piece 15 is inserted into the clamping groove 17, the positioning hole 16 is aligned to the mounting hole 4, after the position of the test piece 15 is adjusted, the locking screw 9 is inserted into the mounting hole 4 and the positioning hole 16, and the test piece 15, the clamping portion 2-1 and the sliding portion 2-2 are fixed.
Then, according to the experimental requirements, the loading member 8 is subjected to shear force which is applied leftwards or rightwards or reciprocated, and a shear static force test or a shear fatigue test is carried out.
Claims (8)
1. A shear test fixture system, characterized in that: the device comprises a loading arm (1) used for applying shearing force and a clamping arm (2) used for fixing a test piece (15), wherein the loading arm (1) and the clamping arm (2) are enclosed to form a loading frame (3), one end of the loading arm (1) is arranged on the clamping arm (2) in a sliding mode, the other end of the loading arm (1) is fixed on the clamping arm (2), the loading arm (1) and the clamping arm (2) are symmetrical about the center of the loading frame (3), and the sliding direction of the loading arm (1) is parallel to the direction of the shearing force.
2. A shear test fixture system according to claim 1, wherein: the clamping arm (2) comprises a clamping part (2-1) and a sliding part (2-2), the sliding part (2-2) comprises a U-shaped frame I (2-2-1) and a connecting plate (2-2-2) fixedly connected with the U-shaped frame I (2-2-1), the clamping part (2-1) comprises a U-shaped frame II (2-1-1) and a fixing plate (2-1-2) fixedly connected with the U-shaped frame II (2-1-1), the U-shaped frame II (2-1-1) is fixed in the U-shaped frame I (2-2-1), and the U-shaped frame II (2-1-1) is used for fixing a clamping groove (17) of the test piece (15).
3. A shear test fixture system according to claim 2, wherein: the U-shaped frame I (2-2-1) and the U-shaped frame II (2-1-1) are provided with a plurality of mounting holes (4), the test piece (15) is also provided with a plurality of positioning holes (16) corresponding to the mounting holes (4), and the sliding part (2-2), the clamping part (2-1) and the test piece (15) are fixedly connected in the mounting holes (4) and the positioning holes (16) through locking screws (9).
4. A shear test fixture system according to claim 2, wherein: a sliding groove (5) is formed in the connecting plate (2-2-2), a guide pillar (6) is arranged at one end of the loading arm (1), the guide pillar (6) is arranged in the sliding groove (5) in a sliding mode, and the sliding direction of the guide pillar (6) is parallel to the direction of the shearing force.
5. A shear test fixture system according to claim 4, wherein: the loading arm (1) comprises two loading plates (7), the two loading plates (7) are respectively located on two sides of the fixing plate (2-1-2), a plurality of locking holes (11) are formed in the two loading plates (7), a plurality of fixing holes (10) are formed in the fixing plate (2-1-2), and locking screws (9) penetrate through the locking holes (11) and the fixing holes (10) to fixedly connect the loading plates (7) and the fixing plate (2-1-2).
6. A shear test fixture system according to claim 5, wherein: an installation cavity (12) is formed between the two loading plates (7), and a loading piece (8) is fixedly connected in the installation cavity (12).
7. A shear test fixture system according to claim 6, wherein: the loading plate (7) is provided with a plurality of first through holes (13), the loading piece (8) is provided with second through holes (14) corresponding to the first through holes (13), and locking screws (9) penetrate through the first through holes (13) and the second through holes (14) to fixedly connect the loading plate (7) and the loading piece (8).
8. A shear test fixture system according to claim 7, wherein: the loading piece (8) is positioned on the transverse central line of the loading frame (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021825066.1U CN213337055U (en) | 2020-08-27 | 2020-08-27 | Shear test fixture system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021825066.1U CN213337055U (en) | 2020-08-27 | 2020-08-27 | Shear test fixture system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213337055U true CN213337055U (en) | 2021-06-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021825066.1U Active CN213337055U (en) | 2020-08-27 | 2020-08-27 | Shear test fixture system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213337055U (en) |
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2020
- 2020-08-27 CN CN202021825066.1U patent/CN213337055U/en active Active
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