A fatigue resistance testing device for metallic materials

Abstract

This utility model discloses a device for testing the fatigue resistance of metallic materials, relating to the field of metallic material testing technology. It includes a testing platform with a mounting groove at its upper end. A first clamping seat and a second clamping seat are slidably disposed within the mounting groove. A mounting box is attached to one side of the second clamping seat. Fixing mechanisms are provided on both sides of the first clamping seat, the second clamping seat, and the mounting box. A pressing mechanism is provided at the upper end of the testing platform. This utility model facilitates the clamping and fixing of metallic materials by providing clamping plates, and the fixing mechanisms facilitate the fixing of the positions of the first and second clamping seats. The pressing mechanism allows for reciprocating bending of both sides of the metallic material, thus facilitating the testing of its fatigue resistance. A tensile testing component is provided, with its testing end fixedly connected to the output end of a first electric cylinder, facilitating the testing of the tensile strength of the metallic material.

Description

Technical Field

[0001] This utility model relates to the field of metal material testing technology, specifically a device for testing the fatigue resistance of metal materials. Background Technology

[0002] Metallic materials play a vital role in engineering. However, during use, due to factors such as external environment and load, metallic materials often suffer fatigue damage, leading to material failure and even accidents. Therefore, studying the fatigue properties and fatigue life of metallic materials is essential. The bending fatigue test is a commonly used fatigue testing method, primarily used to evaluate the fatigue performance of metallic materials under bending loads. This test method can simulate the stress conditions of metallic materials in actual use, possessing high reliability and accuracy, and is therefore widely used in aerospace, automotive manufacturing, and machinery manufacturing fields.

[0003] Existing fatigue testing equipment can only perform fatigue testing on a single aspect of a metal material. If multiple performance tests are to be performed on a metal material, it needs to be placed on different testing equipment, which makes the testing process cumbersome. In addition, the metal material needs to be fixed between tests, but sometimes the metal material may fall off due to the driving force of the motor or other external forces, thus affecting the continuity of the fatigue testing.

[0004] Based on this, a fatigue resistance testing device for metallic materials is now provided, which can eliminate the drawbacks of existing devices. Utility Model Content

[0005] The purpose of this invention is to provide a device for testing the fatigue resistance of metallic materials, so as to solve the problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A fatigue resistance testing device for metallic materials includes a testing platform with a mounting groove at its upper end. A first clamping seat and a second clamping seat are slidably disposed within the mounting groove. The first and second clamping seats are symmetrically arranged. A clamping plate is slidably disposed on the inner side of both the first and second clamping seats. The clamping plate is rotatably disposed at one end of a threaded rod. The threaded rod is disposed in a threaded hole at the upper end of the first and second clamping seats. A mounting box is attached to one side of the second clamping seat. A fixing groove is symmetrically disposed on one side of the mounting box. A first tension spring is disposed in each fixing groove. The other end of the first tension spring is fixedly connected to one side of the second clamping seat. Fixing mechanisms are provided on both sides of the first clamping seat, the second clamping seat, and the mounting box for fixing. A pressing mechanism for bending the metallic material is provided at the upper end of the testing platform.

[0008] Based on the above technical solutions, this utility model also provides the following optional technical solutions:

[0009] In one alternative embodiment: the fixing mechanism includes mounting tubes, and mounting tubes are fixedly provided on both sides of the first clamping seat, the second clamping seat, and the mounting box. The mounting tubes are slidably mounted on guide slide rods, and a plurality of guide slide rods are fixedly mounted in mounting grooves. A plurality of limiting holes are provided at equal intervals on the guide slide rods. A sliding plate is slidably provided inside the mounting tubes, and a limiting post is fixedly provided at the bottom end of each sliding plate. A limiting plate is fixedly provided on each sliding plate, and a limiting groove is provided on the mounting tube at a position corresponding to the limiting plate. A connecting plate is rotatably provided at the upper end of each sliding plate, and a second tension spring is provided between the upper end of the connecting plate and one side of the inside of the mounting tube.

[0010] In one alternative embodiment: the extrusion mechanism includes a first extrusion block and a second extrusion block. The first extrusion block is fixedly mounted on the output end of a second electric cylinder. The second electric cylinder is fixedly mounted in the mounting hole at the upper end of the mounting bracket. The mounting bracket is fixedly mounted on the upper end of the testing platform. The second extrusion block is slidably mounted in the receiving groove at the upper end of the testing platform. First connecting brackets are fixedly mounted on both sides of the second extrusion block. A second connecting bracket is attached to one end of the first connecting bracket. The second connecting brackets are both fixedly mounted on the output end of the second electric cylinder. The first connecting bracket and the second connecting bracket are fixedly connected by a first bolt. The second electric cylinder is electrically connected to a control box. The control box is fixedly mounted on one end of the testing platform.

[0011] In one alternative embodiment: fixed rollers are provided on both sides of the storage groove, and fixed support plates are rotatably provided on the rotating shafts at both ends of the fixed rollers. The fixed support plates are fixedly installed in the mounting groove at the upper end of the testing platform. Adjusting rollers are provided above the fixed rollers, and rotating blocks are rotatably provided on the rotating shafts at both ends of the adjusting rollers. The rotating blocks are slidably provided in the limiting groove at the upper end of the fixed support plates. Threaded holes are provided on both sides of the rotating blocks, and several adjusting holes are provided on both sides of the fixed support plates.

[0012] In one alternative: a tensile testing component is fixedly provided on one side of the first clamping seat, the testing end of the tensile testing component is fixedly connected to the output end of the first electric cylinder, the first electric cylinder is fixedly installed in a mounting hole on one side of the testing table, both the tensile testing component and the first electric cylinder are electrically connected to the control box, connecting frames are symmetrically provided on the output end of the first electric cylinder, one end of each connecting frame is tightly attached to a fixing plate, the fixing plates are all fixed on one side of the first clamping seat, and the connecting frames and fixing plates are fixed together by a second bolt.

[0013] In one alternative: the upper end of each guide slide rod is provided with several scale lines.

[0014] In one alternative: anti-slip stripes are provided at the bottom inner sides of the first clamping seat, the second clamping seat, and the bottom of the clamping plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This invention facilitates the clamping and fixing of metal materials by sliding clamping plates on the inner sides of both the first and second clamping seats. A fixing mechanism ensures the position of the first and second clamping seats is fixed. A pressing mechanism allows for reciprocating bending of both sides of the metal material, facilitating fatigue testing. Several first tension springs are installed between one side of the mounting box and the second clamping seat, allowing the second clamping seat to slide during bending and return to its initial position. A first bolt connects the first and second connecting frames, enabling the first pressing block to test the toughness of the metal material. A tensile testing component is installed on one side of the first clamping seat, with its testing end fixedly connected to the output end of the first electric cylinder, facilitating tensile testing of the metal material. This enhances the practicality of the metal material fatigue testing device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the testing platform structure of this utility model.

[0019] Figure 3 This is a schematic diagram of the installation of the tensile testing component of this utility model.

[0020] Figure 4 This is a schematic diagram of the installation of the first tension spring of this utility model.

[0021] Figure 5 This is a schematic diagram of the installation pipe structure of this utility model.

[0022] Figure 6 This is a schematic diagram of the internal structure of the installation pipe of this utility model.

[0023] Figure 7 This is a schematic diagram showing the connection between the first connecting frame and the second connecting frame of this utility model.

[0024] Figure 8 This is a schematic diagram of the rotating block and fixed support plate structure of this utility model.

[0025] Figure reference numerals: 11 Testing table, 12 First clamping seat, 13 Second clamping seat, 14 Clamping plate, 15 Guide slide rod, 16 Tensile testing component, 17 First electric cylinder, 18 Connecting frame, 19 Mounting box, 20 First tension spring, 21 Limiting post, 22 Limiting plate, 23 Second tension spring, 24 Mounting tube, 25 First extrusion block, 26 Second electric cylinder, 27 Mounting frame, 28 Second extrusion block, 29 First connecting frame, 30 Second connecting frame, 31 Fixed roller, 32 Adjusting roller, 33 Rotating block, 34 Fixed support plate, 35 Control box. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0027] Example 1

[0028] In one embodiment, such as Figures 1-8 As shown, a fatigue resistance testing device for metallic materials includes a testing platform 11. The upper end of the testing platform 11 has a mounting groove. A first clamping seat 12 and a second clamping seat 13 are slidably disposed within the mounting groove. The first clamping seat 12 and the second clamping seat 13 are symmetrically arranged. A clamping plate 14 is slidably disposed on the inner side of both the first clamping seat 12 and the second clamping seat 13. The clamping plate 14 is rotatably mounted on one end of a threaded rod. The threaded rod is disposed within a threaded hole at the upper end of the first clamping seat 12 and the second clamping seat 13. One side of the second clamping seat 13 is tightly fitted with… A mounting box 19 is provided, and a fixing groove is symmetrically provided on one side of the mounting box 19. A first tension spring 20 is provided in each fixing groove. The other end of the first tension spring 20 is fixedly connected to one side of the second clamping seat 13. The first clamping seat 12, the second clamping seat 13 and the mounting box 19 are all provided with fixing mechanisms for fixing. The upper end of the detection table 11 is provided with a pressing mechanism for bending metal materials. The fixing mechanism facilitates the fixing of the first clamping seat 12 and the second clamping seat 13, and the pressing mechanism facilitates the reciprocating bending of the metal materials.

[0029] The fixing mechanism includes an installation tube 24. Installation tubes 24 are fixedly provided on both sides of the first clamping seat 12, the second clamping seat 13, and the mounting box 19. Each installation tube 24 is slidably mounted on a guide slide rod 15. Several guide slide rods 15 are fixedly mounted in mounting grooves. Several limiting holes are evenly spaced on each guide slide rod 15. A sliding plate is slidably mounted inside each installation tube 24. A limiting post 21 is fixedly provided at the bottom end of each sliding plate. A limiting plate 22 is fixedly provided on each sliding plate. A limiting groove is provided on the installation tube 24 at a position corresponding to the limiting plate 22. A connecting plate is rotatably mounted on the upper end of each sliding plate. A second tension spring 23 is provided between the upper end of the connecting plate and one side of the interior of the installation tube 24. In use, when it is necessary to adjust the first... When the first clamping seat 12, the second clamping seat 13, and the mounting box 19 are fixed, the first clamping seat 12 and the second clamping seat 13 are moved to the set position, and the clamping plate 14 is moved by rotating the threaded rod, so that the clamping plate 14 cooperates with the first clamping seat 12 and the second clamping seat 13 to clamp and fix the metal material. Then, the sliding plate is pressed down by the limiting plate 22, so that the sliding plate drives the limiting post 21 to move. When the mounting tube 24 moves to the end, the sliding plate is rotated so that the limiting plate 22 is in the fixing slot. Then the limiting plate 22 is released, so that the fixing slot fixes the sliding plate through the limiting plate 22. At the same time, the limiting post 21 is inserted into the limiting hole, thereby fixing the first clamping seat 12, the second clamping seat 13, and the mounting box 19.

[0030] The extrusion mechanism includes a first extrusion block 25 and a second extrusion block 28. The first extrusion block 25 is fixedly mounted on the output end of a second electric cylinder 26. The second electric cylinder 26 is fixedly mounted in the mounting hole at the upper end of a mounting bracket 27, which is fixedly mounted on the upper end of a testing platform 11. The second extrusion block 28 is slidably mounted in a receiving groove at the upper end of the testing platform 11. First connecting brackets 29 are fixedly mounted on both sides of the second extrusion block 28. A second connecting bracket 30 is attached to one end of each first connecting bracket 29. Both second connecting brackets 30 are fixedly mounted on the output end of the second electric cylinder 26. The first connecting bracket 29 and the second connecting bracket 30 are fixedly connected by first bolts. The second electric cylinder 26 is electrically connected to a control box 35, which is fixedly mounted on one end of the testing platform 11. In use, when it is necessary to test the fatigue resistance of metal materials... During testing, the first clamping seat 12, the second clamping seat 13, and the clamping plate 14 clamp and fix the metal material. Then, the first clamping seat 12 and the mounting box 19 are fixed, and the second clamping seat 13 is in a sliding state. The initial position of the second electric cylinder 26 is adjusted according to the degree of bending of the metal material each time. Then, the first connecting frame 29 and the second connecting frame 30 are fixedly connected, so that the second pressing block 28 and the first pressing block 25 move the same distance. Then, during the test, the first pressing block 25 moves downward to bend the metal material. When the first pressing block 25 rises to the initial position, the second pressing block 28 bends the other side of the metal material. Each time the metal material is bent, the second clamping seat 13 slides on the guide slide rod 15. Under the action of the first tension spring 20, the second clamping seat 13 can return to the initial position.

[0031] Fixed rollers 31 are provided on both sides of the storage groove. Fixed support plates 34 are rotatably mounted on the rotating shafts at both ends of the fixed rollers 31. The fixed support plates 34 are fixedly mounted in the mounting groove at the upper end of the testing table 11. Adjusting rollers 32 are provided above the fixed rollers 31. Rotating blocks 33 are rotatably mounted on the rotating shafts at both ends of the adjusting rollers 32. The rotating blocks 33 are slidably mounted in the limiting groove at the upper end of the fixed support plates 34. Threaded holes are provided on both sides of the rotating blocks 33. Several adjusting holes are provided on both sides of the fixed support plates 34. In use, when performing fatigue resistance testing on metal materials, the installation position of the rotating blocks 33 is selected according to the thickness of the metal material. Then, the rotating blocks 33 are fixed with screws, so that when the metal material is bent repeatedly, the fixed rollers 31 and the adjusting rollers 32 can limit the movement of the metal material.

[0032] A tensile testing component 16 is fixedly mounted on one side of the first clamping seat 12. The testing end of the tensile testing component 16 is fixedly connected to the output end of the first electric cylinder 17. The first electric cylinder 17 is fixedly mounted in a mounting hole on one side of the testing table 11. Both the tensile testing component 16 and the first electric cylinder 17 are electrically connected to the control box 35. A connecting frame 18 is symmetrically mounted on the output end of the first electric cylinder 17. One end of each connecting frame 18 is tightly fitted with a fixing plate. The fixing plates are fixed to one side of the first clamping seat 12. The connecting frame 18 and the fixing plate are fixed together by a second bolt. In use, when it is necessary to test the tensile strength of metal materials, the second clamping seat can be adjusted. 13 and mounting box 19 are fixed together, the first clamping seat 12 is in a sliding state, and the second bolt is removed so that the first electric cylinder 17 is not connected to the first clamping seat 12. Then the first electric cylinder 17 pulls the first clamping seat 12 to move through the tensile testing component 16 so as to test the tensile strength of the metal material. When no test is performed, the output end of the first electric cylinder 17 is fixedly connected to the first clamping seat 12 through the connecting frame 18 and the fixing plate, thereby protecting the tensile testing component 16. It is worth noting that the tensile testing component 16 in this application uses existing components, and the specific working principle and structure are common knowledge, which will not be described in detail here.

[0033] The upper end of each guide slide rod 15 is provided with several scale lines. In use, when testing the toughness of metal materials, the second clamping seat 13 can be in a sliding state, the first clamping seat 12 can be in a fixed state, and the first connecting frame 29 can be disengaged from the second connecting frame 30. As the first extrusion block 25 extrudes the metal material, the metal material bends. After the first extrusion block 25 moves away from the metal material, the movement distance of the second clamping seat 13 can be observed through the scale lines on the guide slide rod 15. The size of this distance indicates the bending or deformation of the metal material.

[0034] The bottom inner sides of the first clamping seat 12 and the second clamping seat 13, as well as the bottom of the clamping plate 14, are all provided with anti-slip stripes. When in use, this facilitates clamping the metal material during testing and reduces the slippage of the metal material.

[0035] The above embodiment discloses a device for testing the fatigue resistance of metallic materials. When testing the fatigue resistance of metallic materials, the first clamping seat 12, the second clamping seat 13, and the clamping plate 14 clamp and fix the metallic material. The sliding plate is pressed down by the limiting plate 22, causing the sliding plate to move the limiting post 21. When the mounting tube 24 moves to its end, the sliding plate is rotated, so that the limiting plate 22 is in the fixing slot. Then, the limiting plate 22 is released, allowing the fixing slot to fix the sliding plate through the limiting plate 22. Simultaneously, the limiting post 21 is inserted into the limiting hole, thereby fixing the first clamping seat 12 and the mounting box 19. The second clamping seat 13 is in a sliding state. The second clamping seat 13 is adjusted according to the degree of bending of the metallic material each time. The cylinder 26 is initially positioned, and then the first connecting frame 29 and the second connecting frame 30 are fixedly connected, so that the second pressing block 28 and the first pressing block 25 move the same distance. Then, during the test, the first pressing block 25 moves downward to bend the metal material. When the first pressing block 25 rises to the initial position, the second pressing block 28 bends the other side of the metal material. Each time the metal material is bent, the second clamping seat 13 slides on the guide slide rod 15. Under the action of the first tension spring 20, the second clamping seat 13 can return to the initial position. The control box 35 can record the number of times the output end of the second electric cylinder 26 moves. The force applied by the output end of the second electric cylinder 26 can be adjusted according to the control box 35.

[0036] When the tensile strength of a metal material needs to be tested, the second clamping seat 13 and the mounting box 19 can be fixed, the first clamping seat 12 is in a sliding state, and the second bolt is removed so that the first electric cylinder 17 is not connected to the first clamping seat 12. Then the first electric cylinder 17 pulls the first clamping seat 12 to move through the tensile testing component 16, so as to test the tensile strength of the metal material. When no test is performed, the output end of the first electric cylinder 17 is fixedly connected to the first clamping seat 12 through the connecting frame 18 and the fixing plate, thereby protecting the tensile testing component 16.

[0037] When testing the toughness of metal materials, the second clamping seat 13 can be in a sliding state, the first clamping seat 12 can be in a fixed state, and the first connecting frame 29 can be disengaged from the second connecting frame 30. As the first extrusion block 25 extrudes the metal material, the metal material bends. After the first extrusion block 25 moves away from the metal material, the movement distance of the second clamping seat 13 can be observed through the scale line on the guide slide rod 15. The size of this distance indicates the bending or deformation of the metal material.

[0038] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A fatigue resistance testing device for metallic materials, comprising a testing platform (11), wherein the upper end of the testing platform (11) is provided with a mounting groove, and a first clamping seat (12) and a second clamping seat (13) are slidably disposed in the mounting groove, the first clamping seat (12) and the second clamping seat (13) are symmetrically arranged, and a clamping plate (14) is slidably disposed on the inner side of both the first clamping seat (12) and the second clamping seat (13), wherein the clamping plate (14) is rotatably disposed at one end of a threaded rod, and the threaded rod is disposed in a threaded hole at the upper end of the first clamping seat (12) and the second clamping seat (13), characterized in that, The second clamping seat (13) is closely attached to one side of the mounting box (19). The mounting box (19) is symmetrically provided with fixing grooves on one side. Each fixing groove is provided with a first tension spring (20). The other end of the first tension spring (20) is fixedly connected to one side of the second clamping seat (13). The first clamping seat (12), the second clamping seat (13) and the mounting box (19) are all provided with fixing mechanisms on both sides. The upper end of the testing table (11) is provided with a pressing mechanism for bending metal materials.

2. The fatigue resistance testing device for metallic materials according to claim 1, characterized in that, The fixing mechanism includes an installation tube (24). The first clamping seat (12), the second clamping seat (13), and the installation box (19) are all fixedly provided with installation tubes (24) on both sides. The installation tubes (24) are all slidably provided on guide slide rods (15). Several guide slide rods (15) are all fixedly provided in the installation groove. Several limiting holes are provided at equal intervals on the guide slide rods (15). Sliding plates are slidably provided inside the installation tubes (24). Limiting posts (21) are fixedly provided at the bottom end of the sliding plates. Limiting plates (22) are fixedly provided on the sliding plates. Limiting slots are provided on the installation tubes (24) at positions corresponding to the limiting plates (22). Connecting plates are rotatably provided at the upper end of the sliding plates. A second tension spring (23) is provided between the upper end of the connecting plate and one side inside the installation tubes (24).

3. The fatigue resistance testing device for metallic materials according to claim 1, characterized in that, The extrusion mechanism includes a first extrusion block (25) and a second extrusion block (28). The first extrusion block (25) is fixedly mounted on the output end of the second electric cylinder (26). The second electric cylinder (26) is fixedly mounted in the mounting hole at the upper end of the mounting bracket (27). The mounting bracket (27) is fixedly mounted on the upper end of the testing table (11). The second extrusion block (28) is slidably mounted in the receiving groove at the upper end of the testing table (11). The second extrusion block (28) is fixedly mounted on both sides with a first connecting bracket (29). The first connecting bracket (29) is closely attached to a second connecting bracket (30) at one end. The second connecting bracket (30) is fixedly mounted on the output end of the second electric cylinder (26). The first connecting bracket (29) and the second connecting bracket (30) are fixedly connected by a first bolt. The second electric cylinder (26) is electrically connected to a control box (35). The control box (35) is fixedly mounted on one end of the testing table (11).

4. The fatigue resistance testing device for metallic materials according to claim 3, characterized in that, Fixed rollers (31) are provided on both sides of the storage groove. Fixed support plates (34) are rotatably provided on the rotating shafts at both ends of the fixed rollers (31). The fixed support plates (34) are fixedly installed in the mounting groove at the upper end of the testing table (11). Adjusting rollers (32) are provided above the fixed rollers (31). Rotating blocks (33) are rotatably provided on the rotating shafts at both ends of the adjusting rollers (32). The rotating blocks (33) are slidably provided in the limiting groove at the upper end of the fixed support plates (34). Threaded holes are provided on both sides of the rotating blocks (33). Several adjusting holes are provided on both sides of the fixed support plates (34).

5. The fatigue resistance testing device for metallic materials according to claim 1, characterized in that, A tensile testing component (16) is fixedly provided on one side of the first clamping seat (12). The testing end of the tensile testing component (16) is fixedly connected to the output end of the first electric cylinder (17). The first electric cylinder (17) is fixedly installed in the mounting hole on one side of the testing table (11). The tensile testing component (16) and the first electric cylinder (17) are both electrically connected to the control box (35). A connecting frame (18) is symmetrically provided on the output end of the first electric cylinder (17). A fixing plate is tightly attached to one end of the connecting frame (18). The fixing plate is fixed on one side of the first clamping seat (12). The connecting frame (18) and the fixing plate are fixed by a second bolt.

6. The fatigue resistance testing device for metallic materials according to claim 2, characterized in that, The upper end of each guide slide rod (15) is provided with several scale lines.

7. The fatigue resistance testing device for metallic materials according to claim 1, characterized in that, Anti-slip stripes are provided on the bottom inner side of the first clamping seat (12) and the second clamping seat (13) and the bottom of the clamping plate (14).

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