Portable material fatigue life testing equipment

Abstract

The utility model belongs to the field of testing equipment, particularly relates to portable material fatigue life testing equipment, and aims to solve the problems that the position of a loading disc is difficult to adjust according to the requirement of a material stamping position, a material cannot be fixed, and the material is deformed due to repeated stamping, so that the material is easy to move in a stamping process, and the fatigue life of the material is influenced. In order to solve the problem that the material fatigue life test accuracy is influenced, the utility model provides the following scheme: the material fatigue life test device comprises a bottom frame, the top of the bottom frame is used for placing a test material, a top frame is fixedly mounted at the top of the bottom frame, two sliding frames which are vertically placed are arranged in the top frame, and an air cylinder penetrates through the top frame; according to the technical scheme of the utility model, the device has the beneficial effects of high efficiency, portability, accurate testing, multifunctionality, easy operation, safety, stability, wide adaptability and the like, and provides powerful support for the research and application in the fields of material science and engineering.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to a portable material fatigue life testing device. Background Technology

[0002] The materials used in fatigue life testing are generally metallic materials, such as steel, aluminum alloys, and titanium alloys. In the field of materials science and engineering, fatigue life assessment of materials is a key step in ensuring product safety, durability, and reliability.

[0003] A search revealed that application CN215985499U discloses a device for testing the fatigue life of corrugated foil.

[0004] The fatigue life testing equipment still has some shortcomings in actual use:

[0005] 1. The equipment has height adjustment capability, but it is difficult to adjust the position of the loading plate according to the needs of the material stamping position.

[0006] 2. This equipment uses a method of directly placing the material on the base plate for stamping. The material is not fixed, and repeated stamping will cause the material to deform, making it easy for the material to move during the stamping process, which will affect the accuracy of the material fatigue life test. Utility Model Content

[0007] The purpose of this invention is to address the shortcomings of existing technologies, such as difficulty in adjusting the position of the loading disk according to the needs of the material stamping position, inability to fix the material, deformation of the material due to repeated stamping, and easy movement of the material during the stamping process, which affects the accuracy of material fatigue life testing. Therefore, a portable material fatigue life testing device is proposed.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A portable material fatigue life testing device includes a base frame, the top of which is used to place the test material. A top frame is fixedly installed on the top of the base frame. Two sliding frames are arranged vertically inside the top frame. A cylinder passes through the top frame, and the movement of the two sliding frames can push the cylinder to move. A sliding bearing is fixedly connected to one end of the output shaft of the cylinder. A connecting plate is fixedly sleeved on the outer wall of the sliding bearing. Two connecting rods slide through the connecting plate. The bottom of the two connecting rods is fixedly connected to the same pressure ring, and the pressure ring abuts against the top of the base frame to form a clamping fixation.

[0010] In one possible design, a sliding block is fixedly connected to one end of each of the two sliding frames, and a nut is fixedly connected to one end of each of the two sliding frames. Both the sliding frames and the sliding blocks slide within the top frame. Two lead screws are rotatably connected within the top frame. Two drive motors are fixedly connected to the outer side of the top frame, and one end of the output shaft of each of the two drive motors is fixedly connected to one end of each of the two lead screws. The nuts are threaded onto the outer wall of the lead screws.

[0011] In one possible design, the two sliding frames are slidably connected to the same support platform, and the cylinder passes through the support platform. A mounting bracket is fixedly installed on the top of the support platform, and the cylinder and the support platform are fixedly connected by bolts and nuts through the mounting bracket.

[0012] In one possible design, a locking plate is fixedly connected to each of the two connecting rods on opposite sides. Two mounting seats are fixedly connected to the top of the connecting plate. A support shaft is fixedly connected inside each mounting seat. A locking block is rotatably fitted onto the outer wall of each support shaft. The locking block abuts against the locking plate to push the connecting rod upward. Torsion springs are fixedly connected to both sides of the locking block. Both torsion springs are fitted onto the outer wall of the support shaft and fixedly connected to the mounting seat.

[0013] In one possible design, two springs are fixedly connected to the top of the pressure ring, and the two springs are respectively sleeved on the outer wall of the connecting rod and fixedly connected to the bottom of the connecting plate.

[0014] In one possible design, a loading disk is fixedly connected to the bottom end of the sliding bearing, two displacement sensors are mounted on the top of the loading disk, and a force sensor is installed between the sliding bearing and the loading disk.

[0015] In one possible design, the connecting plate has a through slot for the displacement sensor to pass through.

[0016] In this application, the top frame is installed on top of the base frame. The material to be tested is placed on the base frame, and two drive motors are started accordingly. The output shafts of the two drive motors drive the lead screws to rotate, and the lead screws push the nuts to move. The nuts drive the sliding frames to slide with the assistance of the sliding blocks. As the two sliding frames move, they push the bearing platform to move, so that the loading plate is aligned with the stamping position. At this time, the pressure ring is pushed to a height higher than the loading plate, and the spring is in a compressed state, supporting the clamping plate through the locking block. When it is necessary to fix the material, the locking block is pressed, and the locking block rotates counterclockwise on the support shaft. The locking block drives the torsion spring to generate Torque, as the clamping block rotates, pushes the clamping plate upward. When the clamping block rotates and disengages from the clamping plate, it is reset by the compression spring, pushing the pressure ring downward. This causes the bottom of the pressure ring to press against the material, and the bottom of the pressure ring, in conjunction with the clamping block, clamps the material. Simultaneously, the pressure on the clamping block is released, the torsion spring resets, and the clamping block returns to its original position. Based on the required test position of the material, the cylinder is activated, and its output shaft pushes the sliding bearing and loading plate downward to form a deformation test. Force and displacement sensors detect the loading force and displacement of the loading plate, thus allowing the fatigue life of the material to be detected by combining the deformation of the material.

[0017] Beneficial effects: In this utility model, the portable material fatigue life testing device, through a precisely designed mechanical structure, allows two cross-placed sliding frames to rotate through the threaded engagement of a screw and nut, ensuring that the test material is adjusted according to the test position during the test, thereby improving the accuracy and reliability of the test;

[0018] In this utility model, the portable material fatigue life testing device can effectively fix the material by using the cooperation of the clamping plate and the clamping block, as well as the spring force to push the clamping ring to the top of the base frame.

[0019] This invention offers advantages such as high efficiency and portability, accurate testing, multifunctionality, ease of operation, safety and stability, and wide adaptability, providing strong support for research and application in the fields of materials science and engineering. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of a portable material fatigue life testing device proposed in this utility model.

[0021] Figure 2 This is a three-dimensional structural schematic diagram of the sliding frame of a portable material fatigue life testing device proposed in this utility model;

[0022] Figure 3 This is a three-dimensional structural diagram of a connecting plate for a portable material fatigue life testing device proposed in this utility model.

[0023] Figure 4 This is a partial exploded structural diagram of the connecting rod of a portable material fatigue life testing device proposed in this utility model.

[0024] In the diagram: 1. Top frame; 2. Base frame; 3. Cylinder; 4. Sliding bearing; 5. Loading plate; 6. Displacement sensor; 7. Force sensor; 8. Connecting plate; 9. Mounting bracket; 10. Bearing platform; 11. Sliding frame; 12. Sliding block; 13. Nut; 14. Lead screw; 15. Drive motor; 16. Connecting rod; 17. Pressure ring; 18. Spring; 19. Clamping plate; 20. Clamping block; 21. Torsion spring; 22. Mounting base; 23. Support shaft. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Example 1: Refer to Figures 1 to 3 A portable material fatigue life testing device, used in the field of testing equipment, includes a base frame 2, the top of which is used to place the test material. A top frame 1 is fixedly installed on the top of the base frame 2. Two sliding frames 11 are arranged vertically inside the top frame 1. A cylinder 3 passes through the top frame 1, and the movement of the two sliding frames 11 can push the cylinder 3 to move. A sliding bearing 4 is fixedly connected to one end of the output shaft of the cylinder 3. A connecting plate 8 is fixedly sleeved on the outer wall of the sliding bearing 4. Two connecting rods 16 slide through the connecting plate 8. The bottom of the two connecting rods 16 is fixedly connected to the same pressure ring 17, and the pressure ring 17 abuts against the top of the base frame 2 to form a clamping fixation. The base frame 2 is used to support the top frame 1. The top frame 1 has two vertically placed sliding frames 11 inside. The movement of these two sliding frames 11 can drive the cylinder 3 to move accordingly. One end of the output shaft of the cylinder 3 is connected to a sliding bearing 4 with a connecting plate 8 fixedly sleeved on the outer wall. The pressure ring 17 located below the connecting plate 8 is fixedly connected by two connecting rods 16 and supports the pressure ring 17 to abut against the top of the base frame 2, thereby achieving the clamping and fixing of the test material.

[0027] Reference Figure 2Two sliding frames 11 are each fixedly connected to one end with a sliding block 12, and each sliding frame 11 is also fixedly connected to one end with a nut 13. Both the sliding frames 11 and the sliding blocks 12 slide within the top frame 1. Two lead screws 14 are rotatably connected within the top frame 1. Two drive motors 15 are fixedly connected to the outside of the top frame 1, and one end of the output shaft of each drive motor 15 is fixedly connected to one end of each lead screw 14. The nuts 13 are threaded onto the outer wall of the lead screws 14. When the drive motors 15 are started, they can drive the lead screws 14 to rotate, thereby causing the nuts 13 and the sliding frames 11 to move within the top frame 1.

[0028] Reference Figure 2 The two sliding frames 11 are slidably connected to the same support platform 10, and the cylinder 3 passes through the support platform 10. A mounting bracket 9 is fixedly installed on the top of the support platform 10. The cylinder 3 and the support platform 10 are fixedly connected by the mounting bracket 9 with bolts and nuts. The two sliding frames 11 are also slidably connected to a support platform 10, and the cylinder 3 is connected to the support platform 10 by the mounting bracket 9 with bolts and nuts. This design allows the cylinder 3 to be stably installed on the support platform 10, while facilitating subsequent maintenance and replacement.

[0029] Reference Figure 4 Two connecting rods 16 are fixedly connected to a retaining plate 19 on opposite sides. Two mounting seats 22 are fixedly connected to the top of the connecting plate 8. A support shaft 23 is fixedly connected inside each mounting seat 22. A retaining block 20 is rotatably fitted onto the outer wall of each support shaft 23, and the retaining block 20 engages with the retaining plate 19 to push the connecting rod 16 upwards. Torsion springs 21 are fixedly connected to both sides of the retaining block 20, and both torsion springs 21 are fitted onto the outer wall of the support shaft 23 and fixedly connected to the mounting seat 22. Pressing the retaining block 20 causes it to rotate counterclockwise on the support shaft 23. The retaining block 20 drives the torsion springs 21 to generate torque. As the retaining block 20 rotates, it pushes the retaining plate 19 upwards. When the retaining block 20 rotates and disengages from the retaining plate 19, releasing the pressure on the retaining block 20 resets the torsion springs 21, and the retaining block 20 returns to its original position.

[0030] Reference Figure 3 Two springs 18 are fixedly connected to the top of the pressure ring 17, and the two springs 18 are respectively sleeved on the outer wall of the connecting rod 16 and fixedly connected to the bottom of the connecting plate 8. The pressure ring 17 can be pushed downward by the use of the two springs 18.

[0031] Reference Figure 1 A loading disk 5 is fixedly connected to the bottom end of the sliding bearing 4. Two displacement sensors 6 are installed on the top of the loading disk 5, and a force sensor 7 is installed between the sliding bearing 4 and the loading disk 5. The two displacement sensors 6 and the force sensor 7 can monitor the changes in displacement and force values ​​in real time during the test, providing a basis for subsequent data analysis.

[0032] Example 2: Reference Figure 1 An improvement upon Embodiment 1 is made: a through slot is provided inside the connecting plate 8 for the displacement sensor 6 to pass through. This through slot facilitates the passage of the displacement sensor 6, simplifying wiring operations and ensuring the neatness and aesthetics of the equipment.

[0033] However, as is well known to those skilled in the art, the working principles and wiring methods of cylinder 3 and drive motor 15 are commonplace and are all conventional methods or common knowledge, so they will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0034] The displacement sensor 6 and force sensor 7 in this utility model are the same as the displacement sensor 50 and force sensor 51 in the announcement number CN215985499U, respectively.

[0035] The sliding bearing 4 in this utility model is the same as the sliding bearing 26 in announcement number CN215985499U.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A portable material fatigue life testing device, characterized in that, include: A base frame (2) is provided, and the top of the base frame (2) is used to place test materials. A top frame (1) is fixedly installed on the top of the base frame (2). Two sliding frames (11) are arranged vertically inside the top frame (1). A cylinder (3) passes through the top frame (1). The movement of the two sliding frames (11) can push the cylinder (3) to move. A sliding bearing (4) is fixedly connected to one end of the output shaft of the cylinder (3). A connecting plate (8) is fixedly sleeved on the outer wall of the sliding bearing (4). Two connecting rods (16) slide through the connecting plate (8). The bottom of the two connecting rods (16) is fixedly connected to the same pressure ring (17). The pressure ring (17) abuts against the top of the base frame (2) to form a clamping fixation.

2. The portable material fatigue life testing device according to claim 1, characterized in that, One end of each of the two sliding frames (11) is fixedly connected to a sliding block (12), and one end of each of the two sliding frames (11) is fixedly connected to a nut (13). Both the sliding frame (11) and the sliding block (12) slide within the top frame (1). Two lead screws (14) are rotatably connected within the top frame (1). Two drive motors (15) are fixedly connected to the outside of the top frame (1). One end of the output shaft of each of the two drive motors (15) is fixedly connected to one end of each of the two lead screws (14). The nut (13) is threaded onto the outer wall of the lead screw (14).

3. The portable material fatigue life testing device according to claim 1, characterized in that, The two sliding frames (11) are slidably connected to the same support platform (10), and the cylinder (3) passes through the support platform (10). The top of the support platform (10) is fixedly installed with a mounting bracket (9). The cylinder (3) and the support platform (10) are fixedly connected by the mounting bracket (9) with bolts and nuts.

4. The portable material fatigue life testing device according to claim 1, characterized in that, Both connecting rods (16) are fixedly connected to a clamping plate (19) on the side away from each other. The top of the connecting plate (8) is fixedly connected to two mounting seats (22). Each mounting seat (22) is fixedly connected to a support shaft (23). The outer wall of each support shaft (23) is rotatably fitted with a clamping block (20). The clamping block (20) and the clamping plate (19) abut against each other to push the connecting rod (16) upward. Both sides of the clamping block (20) are fixedly connected to torsion springs (21). Both torsion springs (21) are fitted on the outer wall of the support shaft (23) and fixedly connected to the mounting seat (22).

5. A portable material fatigue life testing device according to claim 1, characterized in that, The top of the pressure ring (17) is fixedly connected to two springs (18), and the two springs (18) are respectively sleeved on the outer wall of the connecting rod (16) and fixedly connected to the bottom of the connecting plate (8).

6. The portable material fatigue life testing device according to claim 1, characterized in that, The bottom end of the sliding bearing (4) is fixedly connected to a loading disk (5), and two displacement sensors (6) are installed on the top of the loading disk (5). A force sensor (7) is installed between the sliding bearing (4) and the loading disk (5).

7. A portable material fatigue life testing device according to claim 1, characterized in that, The connecting plate (8) is provided with a through groove for the displacement sensor (6) to pass through.

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