CN220542619U - Frock clamp of bolt shearing experiment - Google Patents
Frock clamp of bolt shearing experiment Download PDFInfo
- Publication number
- CN220542619U CN220542619U CN202321669595.0U CN202321669595U CN220542619U CN 220542619 U CN220542619 U CN 220542619U CN 202321669595 U CN202321669595 U CN 202321669595U CN 220542619 U CN220542619 U CN 220542619U
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- bolt
- test
- fixed plate
- testing
- push block
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- 238000010008 shearing Methods 0.000 title claims abstract description 17
- 238000012360 testing method Methods 0.000 claims abstract description 43
- 238000010586 diagram Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241000692569 Stylephorus chordatus Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a fixture for bolt shearing experiments, which comprises a bolt testing fixed plate, wherein a hollow groove is embedded in the front end of the bolt testing fixed plate, an open groove is formed in the upper center end of the front edge of the bolt testing fixed plate, a push block is arranged at the upper end of the hollow groove and is placed above a testing bolt, the push block is arranged above the testing bolt and is embedded in the bolt testing fixed plate, the bolt penetrates through a sleeve to be screwed into a fixed structure, and then the bolt is screwed in an actual screwing mode; and placing a push block on the sleeve, applying force to the push block on the pulling machine at a constant speed until the bolt breaks, and recording the strength at the moment, namely the single-sided shearing strength of the bolt under the action of the axial clamping force, so as to detect the shearing strength of the bolt under the action of the axial force.
Description
Technical Field
The utility model relates to a fixture for bolt shearing experiments.
Background
A bolt is a fastener used to connect two or more parts. It is usually made of metal, has a threaded structure, and can be fastened or unfastened by rotation. Bolts generally consist of a head portion, a threaded portion, and a threaded tail portion. The head is typically of a hexagonal shape for turning the bolt with a wrench or spanner. The threaded portion is an elongated helical structure that can be used with a nut or other threaded feature. The thread tail is typically a flat or cylindrical shape for preventing rotation or movement of the bolt. The main function of the bolt is to fix the parts together, provide a strong connecting force and enable the connected parts to bear a certain tensile force or shearing force. The bolt is widely applied to the fields of various mechanical equipment, building structures, automobiles, aerospace and the like. The selection of the bolt is based on the factors of material strength, thread size, bolt length, load born by the bolt and the like. The bolts need to be tested during production in order to ensure the safety and stability of the connection.
However, the existing fixture for bolt experiments has the defects that the fixture needs to be improved in the using process, the traditional fixture shear strength test method is characterized in that according to the GJB 715.24A requirement, the bolts are only subjected to transverse shear force in the test process, the shear strength of the bolts under the action of axial force is not considered, and the shear strength is not consistent with the actual assembly condition of the bolts, so that the fixture for bolt shear experiments is improved.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides a fixture for bolt shearing experiments, which comprises a bolt testing fixed plate, wherein a hollow groove is embedded in the front end of the bolt testing fixed plate, and an open slot is formed in the upper central end of the front edge of the bolt testing fixed plate.
As the preferable technical scheme of the utility model, the upper end of the hollow groove is provided with a push block, and the push block is arranged above the test bolt.
As the preferable technical scheme of the utility model, the pushing block is arranged above the test bolt and embedded in the bolt test fixing plate.
As a preferable technical scheme of the utility model, the outer rod of the test bolt is provided with a nut sleeve, and the end part of the test bolt is provided with a bolt and a nut.
As a preferable technical scheme of the utility model, the shape of the hollow groove and the shape of the open groove are of a convex structure.
As a preferable technical scheme of the utility model, the pushing block applies force to the test bolt through the pulling machine.
The beneficial effects of the utility model are as follows: the bolts penetrate through the sleeves and are screwed into the fixed structure, and then the bolts are screwed in an actual screwing mode; and placing a push block on the sleeve, applying force to the push block on the pulling machine at a constant speed until the bolt breaks, and recording the strength at the moment, namely the single-sided shearing strength of the bolt under the action of the axial clamping force, so as to detect the shearing strength of the bolt under the action of the axial force.
Drawings
FIG. 1 is a block diagram of the present utility model;
FIG. 2 is a block diagram of a bolt test fixture plate of the present utility model;
FIG. 3 is a block diagram of the present utility model;
FIG. 4 is a left side view of the present utility model;
fig. 5 is a top view of the present utility model.
Detailed Description
The embodiment of the tool clamp for the bolt shearing experiment is shown in fig. 1 to 5: the novel bolt testing and fixing device comprises a bolt testing and fixing plate 1, wherein a hollow groove 2 is embedded in the front end of the bolt testing and fixing plate 1, and an open slot 3 is formed in the central end of the front edge of the bolt testing and fixing plate 1. The upper end of the hollow groove 2 is provided with a push block 4, and the push block 4 is arranged above the test bolt 5. A pushing block 4 is arranged above the test bolt 5 and embedded in the bolt test fixing plate 1.
The outer rod of the test bolt 5 is provided with a nut sleeve 6, and the end part of the test bolt 5 is provided with a bolt nut 7. The hollow groove 2 and the open groove 3 are in a convex structure. The pushing block 4 applies a force to the test bolt 5 through a pulling machine;
the bolts penetrate through the sleeves and are screwed into the fixed structure, and then the bolts are screwed in an actual screwing mode; placing a push block 4 on the sleeve, applying force to the push block 4 on the pulling machine at a constant speed until the bolt breaks, and recording the strength at the moment, namely the strength of the bolt under the action of axial clamping force and single-sided shearing strength;
the bolts are passed through the nut housing 6 and then connected to the test fixture plate. Ensure that the bolts are firmly fixed on the test fixing plate.
The bolt test fixture 1 is used to secure the test bolt 5 so that it can withstand the applied axial clamping force. The hollow slot 2 is used for the passage of the bolt, ensuring that the bolt can pass correctly through the test fixture plate and be connected with other components. The open slot 3 is similar to the hollow slot 2 and is also used for the passage of the bolt, but the open slot 3 is usually a notch opening along one side, so that the installation and the disassembly of the bolt are convenient. The push block 4 rests on a part on the head of the bolt for providing support against the applied force, ensuring that the applied axial clamping force can be transferred to the bolt. The test bolt 5 requires a bolt for performing a shearing experiment as an experimental object. The nut sleeve 6 is used for connecting bolts, and after the bolts pass through the nut sleeve 6, the bolts are fastened with other parts by rotating nuts. The bolt and nut 7 is matched with the test bolt 5 and is used for being matched with the bolt for fastening so as to ensure firm connection between the bolt and other parts.
The working principle of the utility model; the bolts penetrate through the sleeves and are screwed into the fixed structure, and then the bolts are screwed in an actual screwing mode; the push block 4 is placed over the bolts to provide support against the applied force. The other end of the test bolt 5 is connected with a bolt and nut 7, so that firm connection between the bolt and the nut is ensured. The test fixture plate with the bolts was placed on the tensile machine and secured in a stable position. Starting the tension machine to apply force on the push block 4 at a constant speed until the bolt breaks, and recording the strength at the moment, namely the strength of the bolt under the action of the axial clamping force and the single-sided shearing strength, so that the bolt is under the action of the axial clamping force. The force is continuously applied until the bolt breaks. The applied force at break is the shear strength of the bolt. Relevant data during the experiment are recorded, including the magnitude of the applied force, the shear strength of the bolt, etc.
In the above embodiment, only one tool fixture for bolt shearing experiments according to the preferred embodiment of the present utility model, and common changes and substitutions made by those skilled in the art within the technical scope of the present utility model are included in the scope of the present utility model.
Claims (2)
1. The utility model provides a frock clamp of bolt shearing experiment, includes bolt test fixed plate, its characterized in that, bolt test fixed plate front end is embedded to have the hollow slot, the upper center end of bolt test fixed plate front edge is provided with the open slot, and the test bolt screws into in the bolt test fixed plate after passing a sleeve, and the sleeve top is supported and is pushed away there is the ejector pad, and during the test, sleeve and ejector pad are located the hollow slot, and the ejector pad is located the below of pulling force machine executive component and makes pulling force machine executive component can support and push away on the ejector pad and exert a force to test bolt.
2. The tooling fixture for bolt shearing experiments according to claim 1, wherein the hollow groove and the open groove are of a convex structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321669595.0U CN220542619U (en) | 2023-06-28 | 2023-06-28 | Frock clamp of bolt shearing experiment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321669595.0U CN220542619U (en) | 2023-06-28 | 2023-06-28 | Frock clamp of bolt shearing experiment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220542619U true CN220542619U (en) | 2024-02-27 |
Family
ID=89962196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321669595.0U Active CN220542619U (en) | 2023-06-28 | 2023-06-28 | Frock clamp of bolt shearing experiment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220542619U (en) |
-
2023
- 2023-06-28 CN CN202321669595.0U patent/CN220542619U/en active Active
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