Multidirectional fatigue testing device
The adjustable clamping mechanism and disassembly mechanism of the multi-directional fatigue testing device solve the problem of poor adaptability of bionic shoulder joint models in the existing technology, and achieve stable, accurate and low-cost testing results.
Patent Information
- Application Number
- CN202423092836.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-16
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-12-16
AI Technical Summary
Existing multi-directional fatigue testing equipment is difficult to adapt to different models of bionic shoulder joints, resulting in high testing costs and long testing time, and the clamping mechanism may cause damage to the surface of the bionic shoulder joint.
A multi-directional fatigue testing device was designed, which adopted an adjustable clamping mechanism and disassembly mechanism. The threaded rod and threaded sleeve were driven by a stepper motor to move the movable plate. Combined with the adaptively deformable arc-shaped clamping plate and replaceable arc-shaped frame, the device ensured stable clamping and precise testing of the bionic shoulder joint.
The bionic shoulder joint is stably and precisely clamped, which reduces the test cost, improves the test efficiency, and prevents the clamping mechanism from damaging the shoulder joint surface.
Smart Images
Figure CN223400755U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bionic shoulder joint testing, and more specifically, to a multi-directional fatigue testing device. Background Art
[0002] During the development of the bionic shoulder joint, a multidirectional fatigue testing device is a key auxiliary equipment. It can simulate the fatigue of the product during long-term use, helping researchers to identify design flaws, such as the fragility of joint connections and insufficient fatigue life of materials. By analyzing the test results, researchers can optimize the structure, materials, and manufacturing process of the bionic shoulder joint, thereby improving the product's reliability and durability.
[0003] The human shoulder joint is subjected to dynamic forces during daily activities. Bionic shoulder joints typically utilize specific joint surface materials. The degree of wear of these materials during long-term use directly affects the performance and lifespan of the joint. By designing a friction environment in the test device, the wear characteristics of these materials under multi-directional motion and fatigue loading can be observed and evaluated under conditions that simulate actual working conditions, thus providing a basis for material selection and improvement.
[0004] Since the shape, size and structure of the bionic shoulder joint may vary due to different designs and application scenarios, the existing clamping mechanism is often designed for a specific type of bionic shoulder joint and is difficult to adapt to samples of various specifications. When different models of bionic shoulder joints need to be tested, the entire clamping mechanism may need to be replaced or complexly adjusted, which increases the testing cost and time. Utility Model Content
[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a multi-directional fatigue testing device to solve the problems raised in the above-mentioned background technology.
[0006] To achieve the above objectives, the present invention provides the following technical solutions:
[0007] A multi-directional fatigue testing device comprises a workbench, a support block is fixedly provided on one side of the workbench, a first stepper motor is fixedly provided on the top of the support block, a threaded rod is fixedly provided on the output end of the first stepper motor, an external thread of the threaded rod is connected to a threaded sleeve, and a clamping mechanism is provided on the top of the threaded sleeve;
[0008] The clamping mechanism includes a movable plate fixedly arranged on the top of the threaded sleeve, a fixed plate fixedly arranged on the top of the workbench, a first electric telescopic rod fixedly arranged on one side of the movable plate and the fixed plate, a lower clamp fixedly arranged on the output end of the first electric telescopic rod, two slots are provided on the surface of the lower clamp, and blocks are clamped inside the two slots, an upper clamp is fixedly arranged on the top of the block, and threaded holes are provided on the surfaces of the lower clamp and the block, and bolts are threadedly connected to the inner threads of the threaded holes.
[0009] By adopting the above technical solution: the clamping can be automatically adjusted according to the characteristics of the sample, ensuring that the bionic shoulder joint always maintains the correct installation position and stable clamping state during the test, thereby greatly improving the use effect.
[0010] As a further description of the above technical solution: a disassembly mechanism is provided on one side of the lower clamp, and the disassembly mechanism includes a guide groove opened on the surface of the lower clamp and the upper clamp, a guide block is inserted into the inside of the guide groove, an arc frame is fixedly provided on the top of the guide block, a plurality of springs are fixedly provided on the top of the plurality of springs, an arc clamping plate is fixedly provided on the top of the plurality of springs, a rubber layer is fixedly provided on the surface of the arc clamping plate, two fixing plates are provided on both sides of the arc frame, fixing holes are opened on the surfaces of the two fixing plates, a U-shaped threaded rod is fixedly provided inside the fixing hole, through holes are opened on the surfaces of the lower clamp and the upper clamp, the U-shaped threaded rod is inserted into the through hole, and one end of the U-shaped threaded rod is threadedly connected to a fixing nut.
[0011] By adopting the above technical solution, it is convenient to replace the fixing fixture that matches the shape and size of the bionic shoulder joint without causing damage to the surface of the bionic shoulder joint.
[0012] As a further description of the above technical solution: a second electric telescopic rod is fixedly provided on the top of the movable plate and the fixed plate, wherein a fixed frame is fixedly provided on the output end of one of the second electric telescopic rods, a mounting plate is fixedly provided on one side of the fixed frame, a second stepper motor is fixedly provided on the top of the mounting plate, a threaded column is fixedly provided on the output end of the second stepper motor, a threaded slider is provided on the outside of the threaded column, the threaded slider is slidably connected to the fixed frame, a micro motor is fixedly provided on one side of the threaded slider, and a grinding cylinder is fixedly provided on the output end of the micro motor.
[0013] By adopting the above technical solution, the surface of the bionic shoulder joint in different positions can be rubbed, which can make the test more accurate.
[0014] As a further description of the above technical solution: the interior of the fixed frame is slidably connected to a movable slider, the bottom of the movable slider is connected to another second electric telescopic rod, the bottom of the workbench is fixedly provided with a support leg, and the bottom of the support leg is fixedly provided with a universal wheel.
[0015] By adopting the above technical solution, the device can be easily moved and the operation is convenient and quick, which greatly improves the practicality.
[0016] Technical effects and advantages of this utility model:
[0017] 1. By setting a clamping mechanism, compared with the existing technology, the first stepper motor on the top of the support block is started to drive the threaded rod to rotate, and the threaded rod drives the threaded sleeve to move inside the workbench, thereby driving the movable plate to move, and then the movable plate can be driven to move to a suitable position according to the actual length of the bionic shoulder joint, and the bionic shoulder joint is placed on the arc-shaped clamping plate on the top of the upper clamp, and then the upper clamp is moved downward to drive the clamping block to be reinserted into the inside of the clamping slot, and fixed by bolts, thereby driving the spring inside the arc frame to be squeezed and deformed, and can produce adaptive deformation according to the contour of the bionic shoulder joint, thereby driving the arc clamping plate to fit closely with the contact surface of the bionic shoulder joint, and the surface of the arc clamping plate is fixedly provided with a rubber layer, so that it can generate greater friction with the contact surface of the bionic shoulder joint, ensuring a firm installation and accurate position;
[0018] 2. By setting up a disassembly mechanism, compared with the existing technology, the fixing nut is rotated forward to remove the fixing nut from the U-shaped threaded rod, and then the fixing nut is pulled outward to drive the fixing nut to be removed from the inside of the through hole and the fixing hole, and then the arc frame is pulled upward to drive the guide block at the bottom of the arc frame to be removed from the inside of the guide groove, thereby removing the arc frame and replacing arc frames of different sizes, thereby facilitating the replacement of the arc frame, and being able to evenly fit bionic shoulder joints of different sizes, providing stable clamping force, and ensuring the flexibility of fixation. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0020] Figure 2 This is a schematic structural diagram of the clamping mechanism of the present utility model.
[0021] Figure 3 This is a schematic diagram of the disassembly mechanism structure of the present utility model.
[0022] Figure 4 This is a detailed structural diagram of the fixing frame of the present utility model.
[0023] Figure 5 It is a schematic diagram of the overall front view structure of the utility model.
[0024] The accompanying drawings are marked as follows: 1. workbench; 2. support block; 3. threaded rod; 4. threaded sleeve; 5. movable plate; 6. fixed plate; 7. first electric telescopic rod; 8. lower clamp; 9. clamping block; 10. upper clamp; 11. bolt; 12. guide block; 13. arc frame; 14. spring; 15. arc clamping plate; 16. fixing plate; 17. U-shaped threaded rod; 18. fixing nut; 19. second electric telescopic rod; 20. fixed frame; 21. mounting plate; 22. threaded column; 23. threaded slider; 24. micro motor; 25. grinding cylinder; 26. movable slider; 27. support leg; 28. universal wheel. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0026] The embodiments of this application disclose Figure 1-5 The multi-directional fatigue testing device shown includes a workbench 1, a support block 2 fixedly provided on one side of the workbench 1, a first stepper motor fixedly provided on the top of the support block 2, a threaded rod 3 fixedly provided on the output end of the first stepper motor, the external thread of the threaded rod 3 is connected to a threaded sleeve 4, and a clamping mechanism is provided on the top of the threaded sleeve 4;
[0027] The clamping mechanism includes a movable plate 5 fixedly arranged on the top of the threaded sleeve 4, a fixed plate 6 is fixedly arranged on the top of the workbench 1, and a first electric telescopic rod 7 is fixedly arranged on one side of the movable plate 5 and the fixed plate 6. A lower clamp 8 is fixedly arranged on the output end of the first electric telescopic rod 7. The surface of the lower clamp 8 is provided with two card slots, and the inside of the two card slots are clamped with a card block 9. An upper clamp 10 is fixedly arranged on the top of the card block 9. The surfaces of the lower clamp 8 and the card block 9 are provided with threaded holes, and the internal threads of the threaded holes are connected with bolts 11. Start the first stepper motor on the top of the support block 2 to drive the threaded rod 3 to rotate, and the threaded rod 3 drives the threaded sleeve 4 to move inside the workbench 1, thereby driving the movable plate 5 to move, and then according to the actual length of the bionic shoulder joint Drive the movable plate 5 to move to the appropriate position, and then rotate the bolt 11 close to the side of the movable plate 5 forward, thereby driving the bolt 11 to be removed from the inside of the lower clamp 8 and the block 9, and then pull the upper clamp 10 upward to drive the block 9 at the bottom of the upper clamp 10 to be removed from the inside of the slot, and then place the other end of the bionic shoulder joint on the arc-shaped clamping plate 15 on the top of the upper clamp 10, and then move the upper clamp 10 downward to drive the block 9 to be reinserted into the inside of the slot, and then rotate the bolt 11 in the opposite direction to enter the inside of the lower clamp 8 and the block 9 for fixation, thereby driving the spring 14 inside the arc frame 13 to be squeezed and deformed, and can produce adaptive deformation according to the contour of the bionic shoulder joint, thereby driving the arc-shaped clamping plate 15 to fit closely with the contact surface of the bionic shoulder joint.
[0028] Reference Figure 2-3As shown, a disassembly mechanism is provided on one side of the lower clamp 8, and the disassembly mechanism includes a guide groove provided on the surface of the lower clamp 8 and the upper clamp 10, a guide block 12 is inserted into the inside of the guide groove, an arc frame 13 is fixedly provided on the top of the guide block 12, a plurality of springs 14 are fixedly provided on the top of the plurality of springs 14, an arc clamping plate 15 is fixedly provided on the top of each of the multiple springs 14, a rubber layer is fixedly provided on the surface of the arc clamping plate 15, two fixing plates 16 are provided on both sides of the arc frame 13, fixing holes are provided on the surfaces of the two fixing plates 16, a U-shaped threaded rod 17 is fixedly provided inside the fixing hole, through holes are provided on the surfaces of the lower clamp 8 and the upper clamp 10, the U-shaped threaded rod 17 is inserted into the through hole, and one end of the U-shaped threaded rod 17 is threadedly connected to a fixing nut 1 8. A rubber layer is fixedly provided on the surface of the arc-shaped clamping plate 15, so that a greater friction force can be generated with the contact surface of the bionic shoulder joint to prevent the shoulder joint from sliding during the test, and at the same time effectively prevent damage to the surface of the arc-shaped clamping plate 15. Rotate the fixing nut 18 forward to remove the fixing nut 18 from the U-shaped threaded rod 17, and then pull the fixing nut 18 outward to drive the fixing nut 18 to be removed from the inside of the through hole and the fixing hole, and then pull the arc frame 13 upward to drive the guide block 12 at the bottom of the arc frame 13 to be removed from the inside of the guide groove, thereby removing the arc frame 13, and then replacing arc frames 13 of different sizes, thereby facilitating the replacement of the arc frame 13, and being able to evenly fit bionic shoulder joints of different sizes, providing a stable clamping force.
[0029] Reference Figure 3-4 As shown, a second electric telescopic rod 19 is fixedly provided on the top of the movable plate 5 and the fixed plate 6, and a fixed frame 20 is fixedly provided on the output end of one of the second electric telescopic rods 19, a mounting plate 21 is fixedly provided on one side of the fixed frame 20, a second stepper motor is fixedly provided on the top of the mounting plate 21, a threaded column 22 is fixedly provided on the output end of the second stepper motor, a threaded slider 23 is provided on the outer sleeve of the threaded column 22, the threaded slider 23 is slidably connected to the fixed frame 20, a micro motor 24 is fixedly provided on one side of the threaded slider 23, a grinding cylinder 25 is fixedly provided on the output end of the micro motor 24, and the second stepper motor on the top of the mounting plate 21 is started. , thereby driving the threaded column 22 to rotate, and the threaded column 22 drives the threaded slider 23 to move, and then drives the threaded slider 23 to move inside the fixed frame 20, thereby driving the grinding cylinder 25 to move, and then simultaneously starting the two second electric telescopic rods 19 to drive the second electric telescopic rod 19 to move downward until the grinding cylinder 25 contacts the surface of the bionic shoulder joint, and then starting the micro motor 24 to drive the grinding cylinder 25 to rotate, thereby performing a wear resistance test on the grinding cylinder 25 and the surface of the bionic shoulder joint, and conveniently adjusting the left and right position of the grinding cylinder 25, so that multiple surfaces of the bionic shoulder joint can be tested, thereby improving accuracy.
[0030] Reference Figure 4-5 As shown, the interior of the fixed frame 20 is slidably connected to a movable slider 26, the bottom of the movable slider 26 is connected to another second electric telescopic rod 19, and a support leg 27 is fixedly provided at the bottom of the workbench 1. The bottom of the support leg 27 is fixedly provided with a universal wheel 28. The movement of the movable plate 5 also drives one of the second electric telescopic rods 19 to move, and the second electric telescopic rod 19 drives the movable slider 26 to move inside the fixed frame 20, thereby improving stability and facilitating the workbench 1 to drive the universal wheel 28 at the bottom to rotate, thereby moving the device to a suitable position.
[0031] Working principle of this utility model:
[0032] The present invention is a multi-directional fatigue testing device. When using the device, the workbench 1 is first pushed to drive the universal wheel 28 at the bottom to rotate, thereby moving the device to a suitable position. Then, the bolt 11 near the side of the fixing plate 6 is rotated forward, thereby driving the bolt 11 to be removed from the inside of the lower clamp 8 and the clamping block 9. Then, the upper clamp 10 is pulled upward to drive the clamping block 9 at the bottom of the upper clamp 10 to be removed from the inside of the clamping slot. Then, one end of the bionic shoulder joint is placed on the arc-shaped clamping plate 15 at the top of the upper clamp 10.
[0033] At this time, the first stepper motor on the top of the support block 2 is started to drive the threaded rod 3 to rotate, and the threaded rod 3 drives the threaded sleeve 4 to move inside the workbench 1, thereby driving the movable plate 5 to move, and then driving the movable plate 5 to move to the appropriate position according to the actual length of the bionic shoulder joint, and then the bolt 11 on one side of the movable plate 5 is rotated in the positive direction, thereby driving the bolt 11 to be taken out from the inside of the lower clamp 8 and the block 9, and then the upper clamp 10 is pulled upward to drive the block 9 at the bottom of the upper clamp 10 to be taken out from the inside of the slot, and then the other end of the bionic shoulder joint is placed on the arc-shaped clamping plate 15 on the top of the upper clamp 10, and then The upper clamp 10 is moved downward to drive the clamping block 9 to be reinserted into the interior of the clamping slot, and then the bolt 11 is rotated in the opposite direction to enter the interior of the lower clamp 8 and the clamping block 9 to fix them, thereby driving the spring 14 inside the arc frame 13 to be squeezed and deformed, and can produce adaptive deformation according to the contour of the bionic shoulder joint, thereby driving the arc clamping plate 15 to fit closely with the contact surface of the bionic shoulder joint, and the surface of the arc clamping plate 15 is fixedly provided with a rubber layer, so that a large friction force can be generated with the contact surface of the bionic shoulder joint, preventing the shoulder joint from sliding during the test, and also effectively preventing damage to the surface of the arc clamping plate 15;
[0034] At the same time, the movement of the movable plate 5 also drives one of the second electric telescopic rods 19 to move, and the second electric telescopic rod 19 drives the movable slider 26 to move inside the fixed frame 20, thereby improving stability, and starts the second stepping motor on the top of the mounting plate 21, thereby driving the threaded column 22 to rotate, and the threaded column 22 drives the threaded slider 23 to move, thereby driving the threaded slider 23 to move inside the fixed frame 20, thereby driving the grinding cylinder 25 to move, and then simultaneously starting the two second electric telescopic rods 19 to drive the second electric telescopic rods 19 to move downward until the grinding cylinder 25 contacts the surface of the bionic shoulder joint, and then starting the micro motor 24 to drive the grinding cylinder 25 to rotate, thereby performing a wear resistance test on the grinding cylinder 25 and the surface of the bionic shoulder joint, and conveniently adjusting the left and right positions of the grinding cylinder 25, thereby being able to test multiple locations on the surface of the bionic shoulder joint, thereby improving accuracy;
[0035] When it is necessary to fix a bionic shoulder joint of the same size, first rotate the fixing nut 18 forward to remove the fixing nut 18 from the U-shaped threaded rod 17, then pull the fixing nut 18 outward to drive the fixing nut 18 to be removed from the inside of the through hole and the fixing hole, then pull the arc frame 13 upward to drive the guide block 12 at the bottom of the arc frame 13 to be removed from the inside of the guide groove, thereby removing the arc frame 13 and then replacing the arc frame 13 of different sizes, thereby facilitating the replacement of the arc frame 13, and being able to evenly fit bionic shoulder joints of different sizes, providing a stable clamping force.
[0036] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.
Claims
1. A multi-directional fatigue testing device, comprising a workbench (1), characterized in that: A support block (2) is fixedly provided on one side of the workbench (1), a first stepper motor is fixedly provided on the top of the support block (2), a threaded rod (3) is fixedly provided on the output end of the first stepper motor, an external thread of the threaded rod (3) is connected to a threaded sleeve (4), and a clamping mechanism is provided on the top of the threaded sleeve (4); The clamping mechanism comprises a movable plate (5) fixedly arranged on the top of the threaded sleeve (4); a fixed plate (6) is fixedly arranged on the top of the workbench (1); a first electric telescopic rod (7) is fixedly arranged on one side of the movable plate (5) and the fixed plate (6); a lower clamp (8) is fixedly arranged on the output end of the first electric telescopic rod (7); two card slots are provided on the surface of the lower clamp (8); a card block (9) is clamped inside the two card slots; an upper clamp (10) is fixedly arranged on the top of the card block (9); threaded holes are provided on the surfaces of the lower clamp (8) and the card block (9); bolts (11) are threadedly connected to the inside of the threaded holes.
2. The multi-directional fatigue testing device according to claim 1, characterized in that: A disassembly mechanism is provided on one side of the lower clamp (8), and the disassembly mechanism includes a guide groove provided on the surface of the lower clamp (8) and the upper clamp (10), a guide block (12) is inserted into the inside of the guide groove, an arc frame (13) is fixedly provided on the top of the guide block (12), a plurality of springs (14) are fixedly provided on the top of the plurality of springs (14), an arc clamping plate (15) is fixedly provided on the top of each of the plurality of springs (14), and a rubber layer is fixedly provided on the surface of the arc clamping plate (15).
3. The multi-directional fatigue testing device according to claim 2, characterized in that: Two fixing plates (16) are provided on both sides of the arc frame (13), and fixing holes are provided on the surfaces of the two fixing plates (16). U-shaped threaded rods (17) are fixedly provided inside the fixing holes. Through holes are provided on the surfaces of the lower clamp (8) and the upper clamp (10), and the U-shaped threaded rods (17) are plugged into the through holes. One end of the U-shaped threaded rod (17) is threadedly connected to a fixing nut (18).
4. The multi-directional fatigue testing device according to claim 1, characterized in that: A second electric telescopic rod (19) is fixedly provided on the top of the movable plate (5) and the fixed plate (6), a fixed frame (20) is fixedly provided on the output end of one of the second electric telescopic rods (19), a mounting plate (21) is fixedly provided on one side of the fixing frame (20), a second stepping motor is fixedly provided on the top of the mounting plate (21), and a threaded column (22) is fixedly provided on the output end of the second stepping motor.
5. The multi-directional fatigue testing device according to claim 4, characterized in that: A threaded slider (23) is sleeved on the outside of the threaded column (22), and the threaded slider (23) is slidably connected to the fixed frame (20). A micro motor (24) is fixedly provided on one side of the threaded slider (23), and a grinding cylinder (25) is fixedly provided on the output end of the micro motor (24).
6. The multi-directional fatigue testing device according to claim 4, characterized in that: The interior of the fixed frame (20) is slidably connected to a movable slider (26), and the bottom of the movable slider (26) is connected to another second electric telescopic rod (19).
7. The multi-directional fatigue testing device according to claim 1, characterized in that: A support leg (27) is fixedly provided at the bottom of the workbench (1), and a universal wheel (28) is fixedly provided at the bottom of the support leg (27).