Clamping device for tensile strength test of new material
By using a combination of fixed posts and clamping plates to hold flexible materials, and by utilizing mounting slots and motor-driven bolts, the problem of flexible materials loosening during tensile strength tests is solved, achieving more stable fixation and convenient operation.
Patent Information
- Application Number
- CN202521875129.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-02
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2035-09-02
AI Technical Summary
Existing clamping devices for tensile strength testing are prone to causing the sample ends to detach when clamping flexible materials, increasing the risk of slippage, especially during tensile deformation.
The flexible material is clamped by a combination of fixed posts and clamping plates, and the end is positioned and restricted by the installation groove. Combined with disassembly components and motor drive, the bolts can be quickly adjusted and operated synchronously, thus enhancing the fixing effect.
It improves the stability of flexible materials in tensile strength tests, reduces the risk of sample loosening, and enhances operational convenience and synchronization.
Smart Images
Figure CN223623987U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of strength testing technology, specifically a clamping device for testing the tensile strength of new materials. Background Technology
[0002] In the aviation field, all metal-based new materials, composite materials, ceramic-based materials, and sealing materials that participate in bearing, connecting, and resisting tensile loads must undergo tensile testing. The testing focuses on indicators such as tensile strength and yield strength, and must be specifically tested in conjunction with the usage environment. This is a core link to ensure material reliability and flight safety. Among them, sealing materials mainly include flexible ceramic aerogels, high-performance silicone rubber composites, and metal rubbers. These materials are generally flexible and can maintain elasticity in the extreme aviation environment.
[0003] When flexible sealing materials are subjected to tensile strength tests, clamping devices are used to fix both ends of the specimen. The clamping ensures the transmission of force during the tensile test. The clamping devices often adopt adjustable pressure pneumatic or mechanical structures to balance clamping firmness and specimen integrity.
[0004] In existing clamping devices for tensile strength testing, the two ends of the sealing material specimen are held by two clamps that are close to each other. However, during the test, the two ends of the specimen need to be continuously stretched in opposite directions, and the specimen gradually elongates and deforms. This makes it easy for the clamped ends of the specimen to fall off from the middle of the clamping plate. In particular, the deformation of flexible materials during stretching is more obvious (e.g., necking or thinning). This will reduce the clamping force of the clamps on the specimen and increase the risk of slippage.
[0005] Therefore, a new clamping device for testing the tensile strength of materials is proposed to address the above problems. Utility Model Content
[0006] The purpose of this invention is to propose a new clamping device for tensile strength testing of materials, in order to solve the technical problem that flexible materials are prone to loosening during tensile strength testing.
[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: A clamping device for testing the tensile strength of a new material, comprising a testing platform, with a pair of fixed frames disposed on the top of the testing platform; a cylinder is also disposed on the side of one of the fixed frames facing away from the other fixed frame; the output end of the cylinder is oriented towards the line connecting the pair of fixed frames and connected to the fixed frame closer to the cylinder, so that the fixed frame connected to the cylinder can slide on the testing platform to move closer to or away from the other fixed frame through the extension and retraction of the output end of the cylinder; the fixed frame away from the cylinder is fixedly connected to the testing platform. The fixing frame includes a base plate parallel to and in contact with the testing platform, and two connecting plates perpendicularly connected to the base plate. Each fixing frame has a mounting plate on one side of each of the two connecting plates. A fixing column is connected between the two mounting plates of each fixing frame along the line connecting the two mounting plates. A mounting groove is formed between the two ends of the fixing column along the line connecting the two fixing frames. Several bolts are rotatably connected to both sides of the mounting groove of the fixing column. The bolts are oriented along the line connecting the two fixing frames, and the ends of the bolts are threaded with clamping plates to form a clamping space between the fixing column and the clamping plates.
[0008] Preferably, the clamping device further includes a disassembly component for disassembling the bolts on both sides of the mounting groove; the disassembly component includes a horizontally arranged operating rod; the operating rod has bearings installed at both ends facing the fixed column; the operating rod is also provided with a pair of linkage plates; the upper end of each linkage plate is connected to one end of the operating rod through the bearing; the lower end of each linkage plate is connected to a sleeve; the sleeve is used to fit the bolt.
[0009] Preferably, the fixing post is provided with a plurality of first locking blocks facing the inner wall of the clamping plate; the clamping plate is provided with a plurality of second locking blocks facing the inner wall of the fixing post; the second locking blocks are used to insert between each of the first locking blocks.
[0010] Preferably, the testing platform has a storage cavity in the middle for accommodating the disassembled parts; a sliding plate for opening or closing the storage cavity is slidably connected inside the storage cavity.
[0011] Preferably, the top two ends of the operating lever are respectively fixed with a stop block to form a limiting space between the two stop blocks.
[0012] Preferably, an anti-slip sleeve is fixedly connected to the middle of the operating lever; the anti-slip sleeve is located between the two stops.
[0013] Preferably, the first card block and the second card block are both elastic card blocks.
[0014] Preferably, each of the fixing frames is further provided with a motor for driving the fixing column to rotate.
[0015] Preferably, the fixing post is semi-cylindrical, and the arc surface of the fixing post is disposed away from the clamping plate; the clamping plate is semi-cylindrical, and the arc surface of the clamping plate is disposed away from the fixing post.
[0016] Preferably, the testing platform is also provided with a sliding groove, and the fixed frame connected to the output end of the cylinder can move along the sliding groove when driven by the output end of the cylinder.
[0017] The advantages of this utility model are:
[0018] 1. The clamping device for tensile strength testing of new materials described in this utility model first clamps and fixes the flexible new material using fixed columns and clamping plates, and then positions and restricts the ends of the flexible new material using mounting grooves, which facilitates the quick alignment of the two ends of the flexible new material on the two fixed columns. Thus, this utility model can increase the stability when fixing the flexible new material.
[0019] 2. The clamping device for tensile strength testing of new materials described in this utility model adds a disassembly component. The sleeve of the disassembly component can be engaged when operating on multiple bolts, thereby allowing for quick adjustment by rotation. This increases the convenience of bolt operation and allows for simultaneous operation of bolts, increasing bolt synchronization.
[0020] 3. In this utility model, by driving the motor to rotate, the flexible new material sample can be wound around the cylinder composed of the fixed column and the clamping plate, which improves the end fixing effect and further avoids the new material sample from loosening during tensile testing. Attached Figure Description
[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 This is a schematic diagram of the main body of this utility model;
[0023] Figure 2 This is a schematic diagram of the structure of the clamping plate in this utility model;
[0024] Figure 3 This is a schematic diagram of the operating lever in this utility model;
[0025] Figure 4 This is a schematic diagram of the structure of the fixing frame in this utility model;
[0026] Figure 5 This is a schematic diagram of the sleeve structure in this utility model.
[0027] In the diagram: 1. Testing platform; 11. Fixing frame; 12. Cylinder; 13. Mounting plate; 14. Fixing column; 15. Mounting groove; 16. Bolt; 17. Clamping plate; 2. Operating lever; 21. Linkage plate; 22. Sleeve; 23. Bearing; 3. First locking block; 31. Second locking block; 4. Storage cavity; 41. Slide plate; 5. Stop block; 6. Anti-slip sleeve; 7. Motor. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0029] Specific implementation examples are given below.
[0030] like Figures 1 to 5 As shown in the embodiment of this utility model, a clamping device for testing the tensile strength of a new material includes a testing platform 1. A pair of fixed frames 11 are provided on the top of the testing platform 1. A cylinder 12 is also provided on the side of the testing platform 1 opposite to the other fixed frame 11. The output end of the cylinder 12 is oriented towards the line connecting the pair of fixed frames 11 and is connected to the fixed frame 11 closest to the cylinder 12. This allows the fixed frame 11 connected to the cylinder 12 to slide on the testing platform 1 to move closer to or away from the other fixed frame 11 through the extension and retraction of the output end of the cylinder 12. The fixed frame 11 away from the cylinder 12 is fixedly connected to the testing platform 1. The fixed frame 11 includes... A base plate parallel to and in contact with the testing platform 1, and two connecting plates perpendicularly connected to the base plate, each of the two connecting plates of each fixing frame 11 has a mounting plate 13 on one side opposite to each other; a fixing column 14 is connected between the two mounting plates 13 of each fixing frame 11 along the line connecting the two mounting plates 13; a mounting groove 15 is formed between the two ends of the fixing column 14 along the line connecting the two fixing frames 11; a plurality of bolts 16 are rotatably connected to both sides of the mounting groove 15 of the fixing column 14; the bolts 16 are set in the direction of the line connecting the two fixing frames 11, and the ends of the bolts 16 are threadedly connected to clamping plates 17 to form a clamping space between the fixing column 14 and the clamping plates 17.
[0031] During operation, when testing the flexible sealing material, one end of the flexible sealing material sample is first placed between the fixing post 14 and the clamping plate 17 of one of the fixing frames 11. Then, the end of the flexible material is inserted into the mounting groove 15, forming an L-shape. At this time, the bolts 16 on both sides of the mounting groove 15 are rotated, causing the clamping plate 17 to move on the surface of the bolts 16 through the threads. This moves the clamping plate 17 closer to the fixing post 14 to compress and fix the flexible material. Subsequently, the other end of the flexible material is fixed through another fixing frame 11 in the same way. After fixing, the cylinder 12 is activated to drive one side of the fixing frame 11 to move, increasing the distance between the pair of fixing frames 11. This allows for a tensile test on the flexible material, which gradually stretches until it breaks, thus performing a tensile strength test. By first using the fixing post 14 and the clamping plate 17 to clamp and fix the flexible material, and then using the mounting groove 15 to position and restrict the end of the flexible sealing material, the placement position of the flexible material during fixing is increased to be centered, thereby increasing the installation speed of the flexible material during testing.
[0032] The improvement of this utility model lies in the clamping device of the tensile strength testing device. The structure and principle of other parts of the tensile strength testing device can adopt existing technology to perform tensile strength testing.
[0033] like Figures 1 to 5 As shown, the clamping device further includes a disassembly component for disassembling the bolts 16 on both sides of the mounting groove 15. The disassembly component includes a horizontally arranged operating rod 2. Bearings 23 are respectively installed at both ends of the operating rod 2 facing the fixed column 14. The operating rod 2 is also provided with a pair of linkage plates 21. The upper end of each linkage plate 21 is connected to one end of the operating rod 2 via the bearings 23. A sleeve 22 is respectively connected to the lower end of each linkage plate 21. The sleeve 22 is used to fit the bolts 16. During operation, when it is necessary to rotate the bolts 16, the sleeve 22 can be... The bolt 16 is connected to the sleeve, and then the operator holds the operating lever 2 and rotates it clockwise or counterclockwise. At this time, the operating lever 2 drives the upper end of the linkage plate 21 to rotate, and then the lower end of the linkage plate 21 follows the upper end to rotate, thereby rotating the sleeve 22 to loosen or tighten the bolt 16. By adding the sleeve 22, the two bolts 16 can be engaged and disengaged by the sleeve 22, thereby achieving rapid loosening or tightening of the two bolts by rotation, thus improving the convenience of operating the bolt 16. At the same time, the disassembly part can also operate the two bolts 16 simultaneously, increasing the synchronization of the bolts 16.
[0034] like Figures 3 to 4As shown, the fixing post 14 is provided with a plurality of first locking blocks 3 facing the inner wall of the clamping plate 17; the clamping plate 17 is provided with a plurality of second locking blocks 31 facing the inner wall of the fixing post 14; the second locking blocks 31 are used to insert between each of the first locking blocks 3; during operation, when the flexible new material is placed between the fixing post 14 and the clamping plate 17 for combined compression, the second locking blocks 31 will enter the gap between the first locking blocks 3 to lock the flexible new material, thereby strengthening the clamping when the flexible new material is compressed, and increasing the movement resistance through the two types of locking blocks, thereby reducing the risk of the flexible new material slipping between the fixing post 14 and the clamping plate 17 during stretching.
[0035] like Figure 1 As shown, the testing platform 1 has a storage cavity 4 in the middle for accommodating the disassembled parts; a sliding plate 41 for opening or closing the storage cavity 4 is slidably connected inside the storage cavity 4; during operation, after the operating rod 2 is used, the sliding plate 41 can be pushed to open the storage cavity 4, and the operating rod 2 can be placed inside the storage cavity 4 for storage; by adding the storage cavity 4, the operating rod 2 can be stored after the operation on the bolt 16 is completed, so as to quickly store it and reduce the impact on the bolt 16.
[0036] like Figure 5 As shown, the top two ends of the operating lever 2 are respectively fixed with stop blocks 5 to form a limiting space between the two stop blocks 5. When working, when holding the operating lever 2, the hand will be located between a pair of stop blocks 5. At this time, the hand will be blocked by the stop blocks 5 when rotating. This increases the restriction on the hand after holding. By adding stop blocks 5, the hand can be kept on the operating lever 2 by the blocking of the stop blocks 5 when holding the operating lever 2, thereby reducing the situation where the hand leaves the surface of the operating lever 2.
[0037] like Figure 5 As shown, an anti-slip sleeve 6 is fixedly connected to the middle of the operating lever 2; the anti-slip sleeve 6 is located between the two stops 5; during operation, when the operating lever 2 is held, it will come into contact with the anti-slip sleeve 6, and the hand will squeeze the anti-slip sleeve 6 during contact to increase the flexibility of the contact; by adding the anti-slip sleeve 6, the comfort of the hand and the operating lever 2 when holding the operating lever 2 can be increased, thus increasing the convenience of operating the operating lever 2.
[0038] Specifically, the first card block 3 and the second card block 31 are elastic card blocks, such as rubber card blocks.
[0039] Furthermore, each of the aforementioned fixtures 11 is also provided with a motor 7 for driving the rotation of the fixture column 14. The rotation of the motor 7 can wind the new material sample around the fixture column 14 and the clamping plate 17 after clamping, thereby further preventing the sample from coming loose during testing.
[0040] Specifically, the fixing post 14 is semi-cylindrical, and its arc surface is positioned away from the clamping plate 17. Furthermore, the clamping plate 17 is also semi-cylindrical, with its arc surface facing away from the fixing post 14. The fact that at least one of the fixing post 14 and the clamping plate 17 is semi-cylindrical facilitates the secure winding of the sample onto the clamping device when the motor 7 rotates.
[0041] Preferably, the testing platform 1 is also provided with a sliding groove, and the fixed frame 11 connected to the output end of the cylinder 12 can move along the sliding groove when it is driven by the output end of the cylinder 12.
[0042] Working principle: When performing tensile testing on the flexible new material, the middle end of the flexible new material sample is first placed between the fixing post 14 and the clamping plate 17 of one of the fixing frames 11. Then, the end of the flexible new material is inserted into the mounting groove 15, forming an L-shape. At this time, the bolts 16 on both sides of the mounting groove 15 are rotated, causing the clamping plate 17 to move on the surface of the bolts 16 through the threads. This moves the clamping plate 17 closer to the fixing post 14, squeezing and fixing the flexible new material. Subsequently, the other end of the flexible new material is fixed in the same way using another fixing frame 11. Furthermore, after completing the aforementioned fixing, the flexible new material sample can be further wound around the cylinder formed by the fixing post and the clamping plate by the drive motor 7, thereby improving the end fixing effect and further preventing the new material sample from loosening during the tensile test. After fixing, the cylinder 12 drives one side of the fixing bracket 11 to move, increasing the distance between the pair of fixing brackets 11, thereby stretching the flexible new material. The flexible new material is gradually stretched until it breaks, thus performing a tensile strength test. When rotating the bolt 16, the sleeve 22 of the disassembled part can be connected to the bolt 16. Then, the operating lever 2 is held and rotated clockwise or counterclockwise. The operating lever 2 drives the upper end of the linkage plate 21 to rotate. During rotation, the lower end of the linkage plate 21 also rotates with the upper end, thereby rotating the sleeve 22 to loosen or tighten the bolt 16. The flexible new material is then placed onto the fixing column 14 and the clamping plate 1. When the two blocks 7 are combined and squeezed, the second block 31 will enter the gap between the first block 3 to bend the flexible new material. Thus, when squeezing the flexible new material, the movement resistance is increased during the squeezing and fixing process through multiple bends. After the operating lever 2 is used, the slide plate 41 can be pushed to open the storage cavity 4. After opening, the operating lever 2 can be placed inside the storage cavity 4 for storage. When holding the operating lever 2, the hand will be located between a pair of stops 5. At this time, the hand will be blocked by the stops 5 when rotating, thus increasing the restriction on the hand when holding. When holding the operating lever 2, it will come into contact with the anti-slip sleeve 6. When in contact, the hand will squeeze the anti-slip sleeve 6 to increase the flexible contact.
[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A clamping device for testing the tensile strength of new materials, characterized in that: The test platform (1) includes a test stand (1) with a pair of fixed frames (11) on its top. A cylinder (12) is also provided on one of the fixed frames (11) facing away from the other fixed frame (11). The output end of the cylinder (12) is oriented towards the line connecting the pair of fixed frames (11) and connected to the fixed frame (11) near the cylinder (12). This allows the fixed frame (11) connected to the cylinder (12) to slide on the test platform (1) to move closer to or away from the other fixed frame (11) through the extension and retraction of the output end of the cylinder (12). The fixed frame (11) away from the cylinder (12) is fixedly connected to the test platform (1). The fixed frame (11) includes components parallel to and in contact with the test platform (1). The base plate and two connecting plates perpendicularly connected to the base plate are provided. On the opposite side of the two connecting plates of each fixed frame (11), a mounting plate (13) is provided. A fixed column (14) is connected between the two mounting plates (13) of each fixed frame (11) along the line connecting the two mounting plates (13). An installation groove (15) is provided between the two ends of the fixed column (14) along the line connecting the two fixed frames (11). Several bolts (16) are rotatably connected to both sides of the mounting groove (15) of the fixed column (14). The bolts (16) are set in the direction of the line connecting the two fixed frames (11), and the ends of the bolts (16) are threaded with a clamping plate (17) to form a clamping space between the fixed column (14) and the clamping plate (17).
2. The clamping device for tensile strength testing of a new material according to claim 1, characterized in that: The clamping device further includes a disassembly component for disassembling the bolts (16) on both sides of the mounting groove (15); the disassembly component includes a horizontally arranged operating rod (2); the operating rod (2) is used to install bearings (23) at both ends facing the fixed column (14); the operating rod (2) is also provided with a pair of linkage plates (21); the upper end of each linkage plate (21) and one end of the operating rod (2) are connected through the bearing (23); the lower end of each linkage plate (21) is connected to a sleeve (22); the sleeve (22) is used to fit the bolts (16).
3. The clamping device for tensile strength testing of a new material according to claim 2, characterized in that: The fixing post (14) is provided with a plurality of first locking blocks (3) facing the inner wall of the clamping plate (17); the clamping plate (17) is provided with a plurality of second locking blocks (31) facing the inner wall of the fixing post (14); the second locking blocks (31) are used to insert between each of the first locking blocks (3).
4. The clamping device for tensile strength testing of a new material according to claim 3, characterized in that: The testing platform (1) has a storage cavity (4) in the middle for accommodating the disassembled parts; a sliding plate (41) for opening or closing the storage cavity (4) is slidably connected inside the storage cavity (4).
5. The clamping device for tensile strength testing of a new material according to claim 4, characterized in that: The top two ends of the operating lever (2) are respectively fixed with stop blocks (5) to form a limiting space between the two stop blocks (5).
6. The clamping device for tensile strength testing of a new material according to claim 5, characterized in that: An anti-slip sleeve (6) is fixedly connected to the middle of the operating lever (2); the anti-slip sleeve (6) is located between the two stops (5).
7. The clamping device for tensile strength testing of a new material according to claim 3, characterized in that: The first card block (3) and the second card block (31) are elastic card blocks respectively.
8. A clamping device for testing the tensile strength of a new material according to any one of claims 1 to 7, characterized in that: Each of the aforementioned fixtures (11) is also provided with a motor (7) for driving the fixed column (14) to rotate.
9. A clamping device for tensile strength testing of a new material according to claim 8, characterized in that: The fixing post (14) is semi-cylindrical, and the arc surface of the fixing post (14) is set away from the clamping plate (17); the clamping plate (17) is semi-cylindrical, and the arc surface of the clamping plate (17) is set away from the fixing post (14).
10. A clamping device for tensile strength testing of a new material according to claim 1, characterized in that: The testing platform (1) is also provided with a sliding groove, and the fixed frame (11) connected to the output end of the cylinder (12) can move along the sliding groove when it is driven by the output end of the cylinder (12).