CN216386569U - Stretching clamp with simple structure - Google Patents
Stretching clamp with simple structure Download PDFInfo
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- CN216386569U CN216386569U CN202123075462.4U CN202123075462U CN216386569U CN 216386569 U CN216386569 U CN 216386569U CN 202123075462 U CN202123075462 U CN 202123075462U CN 216386569 U CN216386569 U CN 216386569U
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- clamp
- clamping jaw
- side plate
- auxiliary clamping
- clamping blocks
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Abstract
The utility model discloses a stretching clamp with a simple structure, which comprises an upper clamp and a lower clamp, wherein the upper clamp consists of an upper clamping jaw and two auxiliary clamping blocks A, the two auxiliary clamping blocks A have the same structure, the longitudinal sections of the two auxiliary clamping blocks A are parallelograms, the auxiliary clamping blocks A are arranged in the upper clamping jaw back to back, the auxiliary clamping blocks A are connected with the inner wall of the upper clamping jaw in a sliding manner, and the lower clamp has the same structure as the upper clamp. By adopting the tensile clamp with a simple structure, the clamping end of the sample does not need to be provided with threads, the clamping surface of the brittle material sample is increased, the stress is uniform, the risk of damage of the sample caused by stress concentration is reduced, the tensile clamp is simple in structure and convenient to mount, the auxiliary clamping block is flexible and easy to take, the angle adjustment is simple, the sample to be tested is convenient to take, and the rapid clamping, fixing and taking out of the sample to be tested can be realized.
Description
Technical Field
The utility model belongs to the technical field of test devices, and relates to a stretching clamp with a simple structure.
Background
With the development of engineering technology, the requirements of aerospace industry for materials become higher and higher, and therefore, new high temperature resistant structural materials are urgently developed, and the development, test and application of the materials all depend on accurate and complete high temperature mechanical property data of the materials, wherein the test of high temperature tensile property becomes one of very important parameters. Therefore, in order to support the development and application of high-temperature materials, the development of a high-temperature mechanical tensile property test characterization technology for the materials is urgently needed.
Room temperature brittle materials are difficult to machine threads or holes in tensile specimens, so common threaded or hole tensile specimens cannot be used. In addition, a material having low hardness tends to be seriously deformed after being stretched at high temperature, and the sample is not easily taken out. The dog-bone-shaped sample is widely applied to the tensile test of the room-temperature brittle material, and the sample is clamped through the surfaces, inclined surfaces or circular arc surfaces at two ends and transmits tensile load during the test. For these alloy materials with large brittleness and low ductility at room temperature, the sample is easy to slip and be clamped, and the tensile test result is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a tensile clamp with a simple structure, and solves the problem that the conventional tensile clamp needs to process threads or holes on a tensile sample and is not suitable for a tensile test of a high-temperature brittle material.
The technical scheme includes that the stretching clamp with the simple structure comprises an upper clamp and a lower clamp, the upper clamp is composed of an upper clamping jaw and two auxiliary clamping blocks A, the two auxiliary clamping blocks A are identical in structure, the longitudinal sections of the two auxiliary clamping blocks A are parallelograms, the two auxiliary clamping blocks A are arranged inside the upper clamping jaw in a back-to-back mode, the auxiliary clamping blocks A are connected with the inner wall of the upper clamping jaw in a sliding mode, and the lower clamp is identical in structure to the upper clamp.
The lower clamp comprises a lower clamping jaw and two auxiliary clamping blocks B, the two auxiliary clamping blocks B are identical in structure, the longitudinal sections of the auxiliary clamping blocks B are parallelograms, the auxiliary clamping blocks B are arranged inside the lower clamping jaw in a back-to-back mode, and the auxiliary clamping blocks B are connected with the inner wall of the lower clamping jaw in a sliding mode.
A lower pull rod is fixed in the middle of the bottom surface of the lower clamping jaw, and a thread groove is formed in the outer wall of the lower pull rod.
An upper pull rod is fixed in the middle of the top surface of the upper clamping jaw, and a thread groove is formed in the outer wall of the upper pull rod.
The upper clamping jaw is formed by fixedly connecting a top plate, a left side plate A and a right side plate A, and the distance between the left side plate A and the right side plate A is gradually reduced from top to bottom.
The lower clamping jaw is composed of a bottom plate, a left side plate B and a right side plate B which are fixedly connected, and the distance between the left side plate B and the right side plate B is gradually increased from top to bottom.
The upper clamp, the lower clamp, the upper pull rod and the lower pull rod are all made of high-temperature alloy.
The utility model has the beneficial effects that:
(1) by adopting the tensile fixture device, the clamping end of the sample does not need to be threaded, the clamping surface of the brittle material sample is increased, the stress is uniform, and the risk of damage to the sample caused by stress concentration is reduced;
(2) the auxiliary clamping block is flexible and easy to take, the angle adjustment is simple, the sample to be tested is convenient to take, and the sample to be tested can be clamped, fixed and taken out quickly;
(3) the axial line of a sample to be tested can be adjusted to be parallel to the stretching direction by adjusting the positions of the auxiliary clamping blocks in the upper clamping jaw and the lower clamping jaw, the influence of asymmetry of the sample is reduced, the uniformity of a stretching load is ensured, the test result is accurate, and the device is suitable for various occasions;
(4) the test piece clamp made of the high-temperature alloy is high-temperature resistant, and can be used for performing a brittle material tensile test in a high-temperature environment.
Drawings
FIG. 1 is a schematic view of a structurally simple stretch clip of the present invention;
FIG. 2 is a side view of an upper clamp of a simple tension clamp according to the present invention;
fig. 3 is a top view of an upper clamp of a stretch clamp of the present invention.
In the figure, 1, an upper clamp, 2, a lower clamp, 3, an upper pull rod, 4, a lower pull rod, 5, a sample to be tested, 11, an upper clamping jaw, 12, an auxiliary clamping block A, 21, a lower clamping jaw, 22, an auxiliary clamping block B, 111, a top plate, 112, a left side plate A, 113, a right side plate A, 211, a bottom plate, 212, a left side plate B, 213 and a right side plate B are arranged.
Detailed description of the preferred embodiments
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The utility model relates to a stretching clamp with a simple structure, which comprises an upper clamp 1 and a lower clamp 2, wherein the upper clamp 1 consists of an upper clamping jaw 11 and two auxiliary clamping blocks A12, the two auxiliary clamping blocks A12 have the same structure, the longitudinal sections of the two auxiliary clamping blocks A12 are parallelograms, the two auxiliary clamping blocks A are arranged inside the upper clamping jaw 11 back to back, the auxiliary clamping block A12 is connected with the inner wall of the upper clamping jaw 11 in a sliding manner, namely the auxiliary clamping block A12 can move left, right, up and down along the inner wall of the upper clamping jaw 11, the lower clamp 2 has the same structure as the upper clamp 1, the lower clamp 2 consists of a lower clamping jaw 21 and two auxiliary clamping blocks B22, the two auxiliary clamping blocks B22 have the same structure, the longitudinal sections of parallelograms, the two auxiliary clamping blocks A12 are arranged inside the lower clamping jaw 21 back to back, and the auxiliary clamping block B22 is connected with the inner wall of the lower clamping jaw 21 in a sliding manner, namely the auxiliary clamping block B can move left, right, up and down along the inner wall of the lower clamping jaw.
Referring to fig. 3, a cylindrical lower pull rod 4 is fixed in the middle of the bottom surface of the lower clamping jaw 21, and a thread groove is formed in the outer wall of the lower pull rod 4. A cylindrical upper pull rod 3 is fixed in the middle of the top surface of the upper clamping jaw 11, and a thread groove is formed in the outer wall of the upper pull rod 3, so that the upper pull rod is conveniently in threaded connection with a tensile test device.
The upper clamp, the lower clamp, the upper pull rod and the lower pull rod are all made of high-temperature alloy and can be used in high-temperature tests.
The upper clamping jaw 11 is formed by fixedly connecting a top plate 111, a left side plate A112 and a right side plate A113, and the distance between the left side plate A112 and the right side plate A113 is gradually reduced from top to bottom.
The lower clamping jaw 21 is formed by fixedly connecting a bottom plate 211, a left side plate B212 and a right side plate B213, and the distance between the left side plate B212 and the right side plate B213 is gradually increased from top to bottom.
When the tensile fixture with a simple structure is used, the upper fixture 1 is connected to the upper part of a tensile test device through the upper pull rod 3 in a threaded mode, the lower fixture 2 is connected to the lower part of the tensile test device through the lower pull rod 4 in a threaded mode, then the dumbbell-shaped test sample 5 to be tested is fixed between the upper fixture and the lower fixture by adjusting the positions of the auxiliary clamping block A12 and the auxiliary clamping block B22 in the upper clamping jaw and the lower clamping jaw, the axis of the test sample is made to be consistent with the tensile direction, and after the test is finished, the test sample can be quickly taken out by moving the auxiliary clamping block A12 and the auxiliary clamping block B22 left and right. The tensile fixture device is particularly suitable for the tensile test of the brittle material in the high-temperature environment, threads do not need to be machined on the sample, the clamping surface of the brittle material sample is increased, the stress is uniform, the risk of damage to the sample caused by stress concentration is reduced, and the device can also be used in the normal-temperature tensile test and has a wide application range.
Claims (7)
1. The utility model provides a simple structure's tensile anchor clamps, a serial communication port, including last anchor clamps (1) and lower anchor clamps (2), go up anchor clamps (1) and constitute by last clamping jaw (11) and two supplementary clamp splice A (12), two supplementary clamp splice A (12) structures are the same, and longitudinal section is parallelogram, sets up inside last clamping jaw (11) back to back, supplementary clamp splice A (12) and last clamping jaw (11) inner wall sliding connection, and lower anchor clamps (2) structure is the same with last anchor clamps (1).
2. The stretching clamp with the simple structure as claimed in claim 1, wherein the lower clamp (2) is composed of a lower clamping jaw (21) and two auxiliary clamping blocks B (22), the two auxiliary clamping blocks B (22) have the same structure, the longitudinal section of each auxiliary clamping block B is a parallelogram, the auxiliary clamping blocks B (22) are arranged inside the lower clamping jaw (21) back to back, and the auxiliary clamping blocks B (22) are connected with the inner wall of the lower clamping jaw (21) in a sliding manner.
3. The stretching clamp with the simple structure as claimed in claim 2, wherein the lower pull rod (4) is fixed in the middle of the bottom surface of the lower clamping jaw (21), and the outer wall of the lower pull rod (4) is provided with a thread groove.
4. The simple-structure stretching clamp as claimed in claim 3, wherein the upper pull rod (3) is fixed in the middle of the top surface of the upper clamping jaw (11), and the outer wall of the upper pull rod (3) is provided with a thread groove.
5. A structurally simple stretch clamp according to claim 1, characterised in that the upper jaw (11) consists of a top plate (111), a left side plate a (112) and a right side plate a (113) which are fixedly connected, the distance between the left side plate a (112) and the right side plate a (113) decreasing from top to bottom.
6. A structurally simple stretch clamp according to claim 2, characterised in that the lower jaw (21) consists of a base plate (211), a left side plate B (212) and a right side plate B (213) which are fixedly connected, the distance between the left side plate B (212) and the right side plate B (213) increasing from top to bottom.
7. A structurally simple stretching clamp as claimed in claim 4, characterized in that said upper clamp (1), lower clamp (2), upper tie rod (3) and lower tie rod (4) are made of high temperature alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123075462.4U CN216386569U (en) | 2021-12-08 | 2021-12-08 | Stretching clamp with simple structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123075462.4U CN216386569U (en) | 2021-12-08 | 2021-12-08 | Stretching clamp with simple structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216386569U true CN216386569U (en) | 2022-04-26 |
Family
ID=81223418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123075462.4U Active CN216386569U (en) | 2021-12-08 | 2021-12-08 | Stretching clamp with simple structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216386569U (en) |
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2021
- 2021-12-08 CN CN202123075462.4U patent/CN216386569U/en active Active
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