Bending fatigue testing device for chemical fiber mesh
By designing a bending fatigue testing device for chemical fiber mesh, the problem of lack of fatigue performance testing for chemical fiber mesh in deep-sea aquaculture has been solved, realizing efficient and accurate fatigue performance evaluation and ensuring product quality and safety.
Patent Information
- Application Number
- CN202422841938.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-21
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-11-21
AI Technical Summary
The lack of effective testing methods for the bending fatigue performance of chemical fiber mesh in current technology affects the safety and reliability of its application in deep-sea aquaculture.
A bending fatigue testing device for chemical fiber mesh was designed, comprising a fixed frame, a fixed flat clamp, a simulated bending component, a movable flat clamp, and a guide rail. The device simulates the bending motion of the chemical fiber mesh through tension control and a power device. Combining wet and dry testing environments, the device evaluates fatigue performance using the fracture strength retention rate.
It provides accurate bending fatigue performance testing for chemical fiber mesh, ensuring product quality and safety. It is suitable for application needs in different scenarios, and the test data is accurate and easy to operate.
Smart Images
Figure CN223485670U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of performance testing technology for chemical fiber mesh products, specifically a bending fatigue testing device for chemical fiber mesh. Background Technology
[0002] Synthetic fiber netting is widely used in marine aquaculture, especially in deep-sea wind-resistant aquaculture cages. The netting, assembled into cages, forms the living space for fish. Measuring in millimeters, the netting is the weakest point in deep-sea aquaculture facilities; any damage can lead to a large number of fish escaping. Therefore, the functional requirements for netting products are becoming increasingly diversified and demanding.
[0003] In marine aquaculture operations, synthetic fiber mesh is frequently affected by ocean currents, waves, and other factors. Intermittent tensioning, slackening, and bending cause deformation and fatigue, significantly impacting the quality and safety of the mesh products. Previously, much attention was paid to basic indicators such as mesh size, wire diameter, breaking strength, and elongation at break. However, testing methods for the bending fatigue resistance of synthetic fiber mesh were lacking. Therefore, testing the bending fatigue performance of synthetic fiber mesh is of great significance. Summary of the Invention
[0004] To address the aforementioned technical problems, this utility model provides a bending fatigue testing device for chemical fiber mesh. This device has a simple structure, is easy to operate, and provides accurate test results, enabling more comprehensive monitoring of the chemical fiber mesh's functionality and ensuring the quality and safety performance of the mesh products.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] A bending fatigue testing device for synthetic fiber mesh includes a fixed frame, a fixed flat clamp, a simulated bending component, a movable flat clamp, and a guide rail. The fixed flat clamp is fixedly mounted on the upper part of the fixed frame, and the guide rail is fixedly mounted directly below it. The vertical height of the fixed flat clamp is adjustable. The guide rail is arc-shaped. Rollers are provided at the bottom of the movable flat clamp, and these rollers are embedded in the guide grooves of the guide rail to achieve bending and sliding within the guide rail. Under normal conditions, the movable flat clamp is located at the bottom of the guide rail, directly below the fixed flat clamp. The bending component is positioned in the middle between the fixed flat clamp and the movable flat clamp. The fixed flat clamp and the movable flat clamp are used to clamp the upper and lower ends of the chemical fiber mesh sample, respectively. The chemical fiber mesh sample passes through the simulated bending component. Tension is applied to the chemical fiber mesh sample by a tension control device. The movable flat clamp is driven to move in the guide rail by an external power device, causing the chemical fiber mesh sample to bend under the action of the simulated bending component. The bending fatigue performance of the chemical fiber mesh sample is tested, and the fracture strength retention rate is used as the evaluation result of the bending fatigue of the mesh.
[0007] The simulated bending component consists of two symmetrically arranged cylindrical blocking members, the horizontal positions of which are adjustable.
[0008] The vertical positions of the two cylindrical blocking members are adjustable.
[0009] The two cylindrical blocking members are mounted on the fixing frame.
[0010] The angle range between the movable flat clamp bending and sliding within the guide rail and the vertical direction is set to 0-60°.
[0011] The fixed flat clamp and the movable flat clamp have the same clamping structure, with a width of not less than 100mm, and a pad is provided inside the clamping surface of the clamp.
[0012] The entire chemical fiber mesh bending fatigue testing device was placed in a water tank to test the bending fatigue performance of the chemical fiber mesh sample under wet conditions. The liquid level in the water tank was set to cover the fixed flat clamp.
[0013] The liquid level in the tank is set to at least cover the position of the synthetic fiber mesh sample, which is 2.5 meshes above the simulated bending component.
[0014] This invention designs a testing device for the bending fatigue performance of chemical fiber mesh, which has the function of testing the bending fatigue performance of chemical fiber mesh in dry and wet environments, filling the gap in related domestic equipment. It can simulate application scenarios in different scenarios such as aquaculture water bodies and engineering protection. The device has a small footprint, is easy to operate, and saves testing procedures. It evaluates the bending fatigue performance of chemical fiber mesh by the strength retention rate after bending test. The test data has high accuracy and provides better data support for the application and safety performance of chemical fiber mesh. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the front structure of this utility model;
[0016] Figure 2 This is a side view of the present invention. Detailed Implementation
[0017] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments:
[0018] like Figure 1-2As shown, the bending fatigue testing device for the chemical fiber mesh includes a fixed frame 6, a fixed flat clamp 1, a simulated bending component 3, a movable flat clamp 4, and a guide rail 5. The fixed flat clamp 1 is fixedly mounted on the upper part of the fixed frame 6, and the guide rail 5 is fixedly mounted directly below it. The vertical height of the fixed flat clamp 1 is adjustable. The guide rail 5 is arc-shaped. The bottom of the movable flat clamp 4 is equipped with rollers 41, which are embedded in the guide grooves of the guide rail 5 to achieve bending and sliding within the guide rail 5. Under normal conditions, the movable flat clamp 4 is located at the bottom of the guide rail 5, which is exactly below the fixed flat clamp 1. The simulated bending component 3 is positioned in the middle between the fixed flat clamp 1 and the movable flat clamp 4. The fixed flat clamp 1 and the movable flat clamp 4 are used to clamp the upper and lower ends of the chemical fiber mesh sample 2, respectively. The chemical fiber mesh sample 2 passes through the simulated bending component 3. Tension is applied to the chemical fiber mesh sample 2 by a tension control device. The movable flat clamp 4 is driven to move within the guide rail 5 by an external power device, causing the chemical fiber mesh sample 2 to bend under the action of the simulated bending component 3. The bending fatigue performance of the chemical fiber mesh sample 2 is tested, and the fracture strength retention rate is used as the evaluation result of the bending fatigue of the mesh.
[0019] In a preferred embodiment, the simulated bending component 3 consists of two symmetrically arranged cylindrical blocking members, the horizontal positions of which are adjustable.
[0020] As a preferred embodiment, the vertical positions of the two cylindrical blocking members are adjustable to accommodate chemical fiber mesh samples 2 of different lengths for testing.
[0021] In this preferred embodiment, the two cylindrical blocking members are disposed on the fixing frame 6.
[0022] As a preferred embodiment, in this embodiment, the angle range formed by the bending and sliding of the movable flat clamp 4 within the guide rail 5 and the vertical direction is set to 0-60°.
[0023] As a preferred embodiment, the clamping parts of the fixed flat clamp 1 and the movable flat clamp 4 have the same structure, and the width is set to be not less than 100mm. A pad is provided in the clamping surface of the clamp to avoid the chemical fiber mesh sample 2 being damaged or slipping.
[0024] As another embodiment, the entire chemical fiber mesh bending fatigue testing device can be placed in a water tank to test the bending fatigue performance of the chemical fiber mesh sample 2 under wet conditions. The liquid level in the water tank is set to cover the fixed flat clamp 1.
[0025] As a preferred embodiment, in this embodiment, the liquid level in the water tank is set to be at least above the position of the chemical fiber mesh sample 2 and 2.5 meshes above the simulated bending component 3. This achieves the bending fatigue test of the chemical fiber mesh sample 2 in a humid environment, while reducing the amount of liquid used in the water tank and simplifying the process.
[0026] The testing process for this utility model is as follows:
[0027] 1. Take a chemical fiber mesh sample 2, which is cut at least 5 meshes or more away from the edge of the sample mesh, with an effective length of not less than 30 cm and a width of not less than 5 meshes;
[0028] 2. Fix one end of the chemical fiber mesh sample 2 to the fixed flat clamp 1, and pass the chemical fiber mesh sample 2 through the position between the two cylindrical blocking parts, and fix the other end to the movable flat clamp 4, so that the chemical fiber mesh sample 2 is in a vertical hanging state.
[0029] 3. Apply a constant tension for testing to both ends of the chemical fiber mesh sample 2 using a tension control device. The applied tension is 10-20% of the mesh's breaking strength.
[0030] 4. Adjust the horizontal or vertical position of the two cylindrical blocking parts so that the chemical fiber mesh sample 2 is in the middle position of the simulated bending part 3, and the distance from the two cylindrical parts is within 5mm;
[0031] 5. Set the number of bending cycles and conduct a bending fatigue test;
[0032] 6. If the chemical fiber mesh sample 2 fails during the test, record the number of revolutions at which the failure occurs, and the test ends.
[0033] 7. Measure the breaking strength of the chemical fiber mesh sample 2 after completing the bending test of the preset number of revolutions, calculate the breaking strength retention rate, and use the breaking strength retention rate as the bending fatigue evaluation result of the chemical fiber mesh sample 2.
[0034] 8. If a wet test is to be performed, after following steps 1-4 above, place the entire device in the pre-designed water tank, add wet test solution to the water tank, and add the liquid level to a position that covers the chemical fiber mesh sample 2 and is at least 2.5 meshes above the cylindrical obstruction. Then, perform the test according to steps 5-7.
[0035] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.
Claims
1. A bending fatigue testing device for chemical fiber mesh, characterized in that, It includes a fixed frame (6), a fixed flat clamp (1), a simulated bending component (3), a movable flat clamp (4), and a guide rail (5). The fixed flat clamp (1) is fixedly installed on the upper part of the fixed frame (6), and the guide rail (5) is fixedly installed directly below it. The vertical height of the fixed flat clamp (1) is adjustable. The guide rail (5) is set in an arc shape. The bottom of the movable flat clamp (4) is provided with rollers (41). The rollers (41) are embedded in the guide groove of the guide rail (5) to achieve bending and sliding within the guide rail (5). Under normal conditions, the movable flat clamp (4) is located at the bottom of the guide rail (5), which is exactly below the fixed flat clamp (1). The simulated bending component (3) is located at the bottom of the guide rail (5). The bending component (3) is positioned in the middle between the fixed flat clamp (1) and the movable flat clamp (4). The fixed flat clamp (1) and the movable flat clamp (4) are used to clamp the upper and lower ends of the chemical fiber mesh sample (2), respectively. The chemical fiber mesh sample (2) passes through the simulated bending component (3). Tension is applied to the chemical fiber mesh sample (2) by the tension control device. The movable flat clamp (4) is driven to move in the guide rail (5) by the external power device, which drives the chemical fiber mesh sample (2) to bend under the action of the simulated bending component (3). The bending fatigue performance of the chemical fiber mesh sample (2) is tested, and the fracture strength retention rate is used as the evaluation result of the bending fatigue of the mesh.
2. The bending fatigue testing device for chemical fiber mesh according to claim 1, characterized in that, The simulated bending component (3) consists of two symmetrically arranged cylindrical blocking components, the horizontal positions of which are adjustable.
3. The bending fatigue testing device for chemical fiber mesh according to claim 2, characterized in that, The vertical positions of the two cylindrical blocking members are adjustable.
4. A bending fatigue testing device for chemical fiber mesh according to any one of claims 2 or 3, characterized in that, The two cylindrical blocking members are mounted on the fixing frame (6).
5. The bending fatigue testing device for chemical fiber mesh according to claim 1, characterized in that, The angle range between the movable flat clamp (4) bending and sliding within the guide rail (5) and the vertical direction is set to 0-60°.
6. The bending fatigue testing device for chemical fiber mesh according to claim 1, characterized in that, The clamping parts of the fixed flat clamp (1) and the movable flat clamp (4) have the same structure, and the width is set to be not less than 100mm. A pad is provided inside the clamping surface of the clamp.
7. The bending fatigue testing device for chemical fiber mesh according to claim 1, characterized in that, The entire chemical fiber mesh bending fatigue testing device was placed in a water tank to test the bending fatigue performance of the chemical fiber mesh sample (2) under wet conditions. The liquid level in the water tank was set to cover the fixed flat clamp (1).