CN214427141U - High-low temperature tensile test clamp for composite material - Google Patents
High-low temperature tensile test clamp for composite material Download PDFInfo
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- CN214427141U CN214427141U CN202120531625.6U CN202120531625U CN214427141U CN 214427141 U CN214427141 U CN 214427141U CN 202120531625 U CN202120531625 U CN 202120531625U CN 214427141 U CN214427141 U CN 214427141U
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Abstract
The utility model relates to a combined material tests technical field, especially relates to a combined material high low temperature tensile test anchor clamps, include: the environment box comprises an accommodating space, and openings are formed in two ends of the environment box; the two stretching arms are respectively arranged at the opening and are partially positioned in the environment box, and one ends of the two stretching arms outside the environment box are fixedly connected with the power component; the clamping blocks are arranged at one ends of the two stretching arms in the environment box, and each stretching arm is provided with two clamping blocks for clamping a test piece; the stretching arm is provided with two first inclined planes, the two clamping blocks are arranged between the two first inclined planes and matched with the first inclined planes, and when the stretching arm stretches the test piece, the two clamping blocks are extruded by the two first inclined planes, so that the clamping force on the test piece is increased. The utility model discloses in, when tensile arm stretches the test piece, two press from both sides tight piece and receive two first inclined planes extrusion to the increase is to the clamp force of test piece, and the clamp force increases along with the increase of load, satisfies the demand of clamp force.
Description
Technical Field
The utility model relates to a combined material tests technical field, especially relates to a combined material high low temperature tensile test anchor clamps.
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, the mechanical property test of the corresponding composite materials also becomes an important link for development and application of the composite materials, the tensile test is a test for measuring the mechanical property of the materials under the action of axial static pressure, and because a composite material tensile test sample strip is gradually expanded from one millimeter to dozens of millimeters, the traditional tensile clamp cannot meet the increasing load requirement.
In the prior art, the loading modes of the tensile fixture for testing the spline mainly comprise a shearing loading mode and an end part loading mode, however, in the tensile testing process, along with the increase of the load attached to the spline, the clamping force required for fixing the sample piece is larger, the traditional shearing loading mode and the end part loading mode cannot ensure the stability of the clamping force on the two ends of the spline, the phenomena of spline end part damage and the like are easily caused, and the performance of the spline cannot be accurately tested; in order to solve the above problems, the prior art also proposes a method of testing by weakening the thickness of the material, but the damage and interference of the sample caused by human before the test can also increase the error of the final test result.
In view of the above problems, the designer is actively making research and innovation based on the practical experience and professional knowledge that the engineering of the product is applied for many years, and by using the theory, so as to create a composite material high-low temperature tensile test fixture, which is more practical.
SUMMERY OF THE UTILITY MODEL
The utility model provides a combined material high low temperature tensile test anchor clamps to effectively solve the problem in the background art.
In order to achieve the above purpose, the utility model adopts the technical scheme that: a composite high and low temperature tensile test fixture, comprising:
the environment box comprises an accommodating space, and openings are formed in two ends of the environment box;
the two stretching arms are respectively arranged at the opening and are partially positioned in the environment box, and one ends of the two stretching arms outside the environment box are fixedly connected with the power component;
the clamping block is arranged at one end, located in the environment box, of each of the two stretching arms, two clamping blocks are arranged on each stretching arm, and the two clamping blocks clamp the test piece;
the tensile arm is provided with two first inclined planes, the two clamping blocks are arranged between the two first inclined planes and matched with the first inclined planes, and when the tensile arm stretches a test piece, the two clamping blocks are extruded by the two first inclined planes, so that the clamping force on the test piece is increased.
Furthermore, a pan head is fixedly arranged at one end of the stretching arm in the environment box, two grooves are formed in the pan head, a gap is reserved between the two grooves, the two first inclined planes are arranged at the gap, and the distance between the two first inclined planes and the end close to the test piece is smaller than that between the two first inclined planes and the end far away from the test piece.
Further, the width of the groove is larger than or equal to the maximum distance between the two first inclined planes.
Furthermore, one end, clamped to the test piece, of the clamping block is a straight surface, the other end of the clamping block is a second inclined surface correspondingly arranged to the first inclined surface, and the length of the second inclined surface is smaller than that of the first inclined surface.
Furthermore, a third inclined plane is further arranged at the other end of the clamping block, and the distance from one end, far away from the test piece, of the third inclined plane to the test piece is smaller than the distance from one end, close to the test piece, of the third inclined plane to the test piece.
Furthermore, the clamping blocks are provided with protruding blocks at two ends perpendicular to the test piece, springs are arranged in the grooves, one ends of the springs are detachably connected with the grooves, and the other ends of the springs are detachably connected with the protruding blocks.
Furthermore, the stretching arm comprises a guide pillar, a linear bearing and a sleeve, the linear bearing is arranged on the guide pillar, and the sleeve is sleeved on the linear bearing.
Furthermore, the sleeve is provided with a mounting disc and a jack at one end outside the environment box, the mounting disc is fixed on the power component, one end of the jack is fixedly arranged on the mounting disc, and the other end of the jack is fixedly connected with the sleeve.
The utility model has the advantages that: the utility model discloses a set up environment case, two tensile arms and press from both sides tight piece, be provided with first inclined plane on two tensile arms, two press from both sides tight piece setting between two first inclined planes, when tensile arm stretches the test piece, two press from both sides tight piece and receive two first inclined planes extrusion to the increase is to the clamp force of test piece, and the clamp force increases along with the increase of load, satisfies the demand of clamp force.
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 the present invention;
fig. 2 is a top view of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
fig. 4 is a schematic view of the construction of the disc head and the clamping block.
Reference numerals: 1. an environmental chamber; 11. an opening; 2. a stretching arm; 21. coiling; 22. grooving; 221. a first inclined plane; 23. a guide post; 24. a linear bearing; 25. a sleeve; 26. mounting a disc; 27. a jack; 3. a clamping block; 31. a second inclined plane; 32. a third inclined plane; 33. and (4) a protruding block.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all 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.
As shown in fig. 1 to 4, a composite material high and low temperature tensile test fixture includes:
the environment box comprises an environment box 1, wherein the environment box 1 comprises an accommodating space, and two ends of the environment box 1 are provided with openings 11;
the two stretching arms 2 are respectively arranged at the opening 11, the parts of the two stretching arms 2 are positioned in the environment box 1, and one ends of the two stretching arms 2 outside the environment box 1 are fixedly connected with the power component;
the clamping block 3 is arranged at one end of each of the two stretching arms 2 in the environment box 1, two clamping blocks 3 are arranged on each stretching arm 2, and the two clamping blocks 3 clamp the test piece;
the stretching arm 2 is provided with two first inclined planes 221, the two clamping blocks 3 are arranged between the two first inclined planes 221 and matched with the first inclined planes 221, and when the stretching arm 2 stretches the test piece, the two clamping blocks 3 are extruded by the two first inclined planes 221, so that the clamping force on the test piece is increased.
Through setting up environment case 1, two tensile arms 2 and pressing from both sides tight piece 3, be provided with first inclined plane 221 on two tensile arms 2, two press from both sides tight piece 3 and set up between two first inclined planes 221, when tensile arm 2 stretches the test piece, two press from both sides tight piece 3 and receive two first inclined planes 221 extrudees to the increase is to the clamp force of test piece, and the clamp force increases along with the increase of load, satisfies the demand of clamp force.
Preferably, as for the above embodiment, one end of the stretching arm 2 in the environment box 1 is fixedly provided with the pan head 21, the pan head 21 is provided with two slots 22, a gap is left between the two slots 22, two first inclined surfaces 221 are provided at the gap, and the distance between the two first inclined surfaces 221 at one end close to the test piece is smaller than that at one end far away from the test piece.
Through setting up the coiled hair 21, be provided with two fluting 22 on the coiled hair 21, leave the clearance between two fluting 22, two first inclined planes 221 set up in clearance department, and two first inclined planes 221 are less than the one end distance of keeping away from the test piece at the one end distance that is close to the test piece to realize the demand that the clamp force increases along with the load increase, and press from both sides tight piece 3 and locate to install to first inclined plane 221 in through fluting 22, simple to operate.
Preferably, the width of the slot 22 is greater than or equal to the maximum distance between the two first inclined surfaces 221.
Through the biggest distance between the two first inclined planes 221 with fluting 22 width more than or equal to press from both sides tight piece 3 and when installing to first inclined plane 221, can not receive the interference, ensure the utility model discloses a function.
As a preferable example of the above embodiment, one end of the clamping block 3 clamping the specimen is a straight surface, the other end is a second inclined surface 31 provided corresponding to the first inclined surface 221, and the length of the second inclined surface 31 is smaller than that of the first inclined surface 221.
Through setting up the straight face to better press from both sides the test piece, guarantee that the test piece is in the tight department atress of clamp and keep unanimous, through setting up second inclined plane 31, and second inclined plane 31 length is less than first inclined plane 221 length, thereby has made things convenient for and will press from both sides tight piece 3 and install to first inclined plane 221 on.
Preferably, the other end of the clamping block 3 is further provided with a third inclined surface 32, and the distance from the end far away from the test piece to the test piece is smaller than that from the end close to the test piece to the third inclined surface 32.
By arranging the third inclined surface 32, the clamping block 3 is prevented from being too short of the position of the slot 22 during installation, so that the installation is inconvenient.
Preferably, the clamping block 3 is provided with protruding blocks 33 at two ends perpendicular to the test piece, a spring is arranged in the slot 22, one end of the spring is detachably connected with the slot 22, and the other end of the spring is detachably connected with the protruding blocks 33.
Through setting up protruding piece 33, be provided with the spring in the fluting 22, spring one end can be dismantled with fluting 22 and be connected, and the other end can be dismantled with protruding piece 33 and be connected to when need not testing, press from both sides tight piece 3 and be in first inclined plane 221, prevent to press from both sides tight piece 3 and break away from the cooperation or lose, increased the utility model discloses a practicality and convenience in use.
Preferably, the stretching arm 2 comprises a guide post 23, a linear bearing and a sleeve 25, wherein the linear bearing is arranged on the guide post 23, and the sleeve 25 is sleeved on the linear bearing.
Through setting up guide pillar 23, linear bearing and sleeve pipe 25 to obtain the steady motion of high accuracy, guaranteed the stable increase of test piece atress in the tensile test, guaranteed the accuracy of test result.
Preferably, in the above embodiment, the sleeve 25 is provided with a mounting plate 26 and a jack 27 at one end located outside the environmental chamber 1, the mounting plate 26 is fixed on the power component, and one end of the jack 27 is fixed on the mounting plate 26, and the other end is fixedly connected with the sleeve 25.
Through setting up jack 27 for can carry out accurate control and measurement to the pulling force of exerting, guarantee the accuracy of measuring result.
It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides a combined material high low temperature tensile test anchor clamps which characterized in that includes:
the environment box (1), the environment box (1) comprises an accommodating space, and openings (11) are arranged at two ends of the environment box (1);
the two stretching arms (2) are respectively arranged at the opening (11) and are locally positioned in the environment box (1), and one ends of the two stretching arms (2) outside the environment box (1) are fixedly connected with a power component;
the clamping block (3) is arranged at one end, located in the environment box (1), of each stretching arm (2), the clamping block (3) is arranged on one end, located in the environment box (1), of each stretching arm (2), and the two clamping blocks (3) clamp a test piece;
the tensile arm (2) is provided with two first inclined planes (221), the two clamping blocks (3) are arranged between the two first inclined planes (221) and matched with the first inclined planes (221), and when the tensile arm (2) stretches a test piece, the two clamping blocks (3) are extruded by the two first inclined planes (221), so that the clamping force on the test piece is increased.
2. The composite material high-low temperature tensile test fixture according to claim 1, wherein a pan head (21) is fixedly arranged at one end of the tensile arm (2) in the environmental chamber (1), two slots (22) are arranged on the pan head (21), a gap is left between the two slots (22), two first inclined planes (221) are arranged at the gap, and the distance between the two first inclined planes (221) at one end close to the test piece is smaller than that at one end far away from the test piece.
3. The composite material high-low temperature tensile test fixture of claim 2, wherein the width of the slot (22) is greater than or equal to the maximum distance between the two first inclined planes (221).
4. The composite material high-low temperature tensile test fixture according to claim 3, wherein one end of the clamping block (3) clamping the test piece is a straight surface, the other end of the clamping block is a second inclined surface (31) arranged corresponding to the first inclined surface (221), and the length of the second inclined surface (31) is smaller than that of the first inclined surface (221).
5. The composite material high and low temperature tensile test fixture according to claim 4, wherein the other end of the clamping block (3) is further provided with a third inclined surface (32), and the distance from the end far away from the test piece to the test piece is smaller than the distance from the end close to the test piece by the third inclined surface (32).
6. The composite material high-low temperature tensile test fixture according to claim 5, wherein the clamping block (3) is provided with protruding blocks (33) at two ends perpendicular to the test piece, a spring is arranged in the slot (22), one end of the spring is detachably connected with the slot (22), and the other end of the spring is detachably connected with the protruding blocks (33).
7. The composite material high and low temperature tensile test fixture of claim 1, wherein the tensile arm (2) comprises a guide post (23), a linear bearing and a sleeve (25), the linear bearing is disposed on the guide post (23), and the sleeve (25) is sleeved on the linear bearing.
8. The composite material high-low temperature tensile test fixture according to claim 7, wherein the sleeve (25) is provided with a mounting plate (26) and a jack (27) at one end located outside the environmental chamber (1), the mounting plate (26) is fixed on a power component, one end of the jack (27) is fixedly arranged on the mounting plate (26), and the other end of the jack is fixedly connected with the sleeve (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120531625.6U CN214427141U (en) | 2021-03-12 | 2021-03-12 | High-low temperature tensile test clamp for composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120531625.6U CN214427141U (en) | 2021-03-12 | 2021-03-12 | High-low temperature tensile test clamp for composite material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214427141U true CN214427141U (en) | 2021-10-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120531625.6U Active CN214427141U (en) | 2021-03-12 | 2021-03-12 | High-low temperature tensile test clamp for composite material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214427141U (en) |
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2021
- 2021-03-12 CN CN202120531625.6U patent/CN214427141U/en active Active
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