A spring fatigue testing machine

Abstract

The utility model discloses a spring fatigue detection testing machine belongs to spring testing equipment technical field. Including installation platform, the upper surface fixed connection of installation platform has the mounting bracket, is passed in and is established to the positioning slot on the mounting bracket, rotates and is connected with the positioning disc in the positioning slot, the fixed connection with the cylinder on the positioning disc, the output fixed mounting of cylinder has the mounting disc, is provided with the fixed disc on the installation platform, a plurality of fixed disc fixed connection of through mounting disc's connecting rod, is provided with rotating mechanism on the installation platform, and rotating mechanism is used for driving fixed disc rotation, and is established to a plurality of connecting slots on the fixed disc, the utility model discloses can carry out the test to a plurality of test springs simultaneously, improves the test efficiency, and can add new test spring and carry out the test in the process of not interrupting other test spring test, simple operation, safe and reliable, improve the efficiency of spring test, improve the practicality and work efficiency of spring fatigue detection testing machine.

Description

Technical Field

[0001] This utility model relates to a spring fatigue testing machine, belonging to the technical field of spring testing equipment. Background Technology

[0002] After springs are manufactured, they are usually sampled and tested for fatigue strength using a spring fatigue testing machine. A traditional spring fatigue testing machine typically uses clamps to fix both ends of the spring and applies compression or tension force through hydraulic or mechanical means, combined with data collection by sensors.

[0003] Most existing testing machines are single-station designs, and can usually only test one spring at a time. If a new spring needs to be inserted for testing during the spring test, the currently tested spring must be interrupted, the new spring replaced, and the test restarted. However, to ensure data accuracy, the spring test should not be interrupted during the test, so the interrupted spring test needs to be retested. As a result, the existing spring fatigue testing machine has poor flexibility, low operating efficiency, and cannot achieve continuous testing.

[0004] Therefore, a new solution is needed to address this problem. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a spring fatigue testing machine, which solves the problem that in the prior art, if a new spring needs to be inserted for testing during the spring test, the currently tested spring must be interrupted, replaced with a new spring, and then restarted. However, in order to ensure the accuracy of the data, the spring test usually cannot be interrupted during the test, so the interrupted spring needs to be tested again. As a result, the existing spring fatigue testing machine has poor flexibility, low operating efficiency, and cannot achieve continuous testing.

[0006] The technical problem to be solved by this utility model is achieved by the following technical solution: A spring fatigue testing machine includes a mounting platform, a mounting frame fixedly connected to the upper surface of the mounting platform, a positioning groove through which the mounting frame is opened, a positioning plate rotatably connected in the positioning groove, a cylinder fixedly connected to the positioning plate, an mounting plate fixedly installed at the output end of the cylinder, a fixed plate on the mounting platform, a plurality of connecting rods through the mounting plate fixedly connected to the fixed plate, a rotating mechanism on the mounting platform for driving the fixed plate to rotate, a plurality of connecting grooves on the fixed plate, a support block slidably connected in the connecting grooves, a mounting mechanism on the support block, a test spring on the mounting mechanism for limiting the test spring, a plurality of compression mechanisms on the mounting plate for compressing the test spring, and a rotating mechanism including a fixed groove on the mounting platform, a motor fixedly installed in the fixed groove, the output end of the motor being poweredly connected to the fixed plate.

[0007] By adopting the above technical solution, during use, the test spring is installed on the mounting mechanism, which limits the test spring. Then, the cylinder drives the mounting plate to move downwards. At this time, the corresponding compression mechanism can be activated. During the downward displacement of the mounting plate, the compression mechanism can squeeze the test spring to test it. Multiple test springs can be tested at the same time, resulting in higher testing efficiency. When the motor is started, it can drive the fixed plate to rotate. Because the connecting rod slides through the mounting plate, the rotation of the fixed plate synchronously drives the rotation of the mounting plate. The mounting plate synchronously drives the cylinder, the positioning plate, and the compression mechanism installed on the mounting plate to rotate.

[0008] The present invention is further configured as follows: the installation mechanism includes a positioning ring fixedly installed on the support block, one end of the test spring can be inserted into the positioning ring, a fixing cylinder is fixedly connected to the upper surface of the support block, a positioning rod is slidably connected inside the fixing cylinder, one end of the positioning rod away from the support block extends out of the fixing cylinder and is fixedly connected to a connecting block, a placement ring is fixedly connected to the lower surface of the connecting block, the other end of the test spring can be inserted into the placement ring, a stabilizing groove is formed through the inside of the fixing cylinder, a limiting block is fixedly connected to the outer surface of the positioning rod and slidably connected to the stabilizing groove, a limiting groove is formed on one side of the connecting groove, and a second slider is fixedly connected to one side of the support block and slidably connected to the limiting groove.

[0009] By adopting the above technical solution, during use, pushing the connecting block causes the positioning rod to move upwards, then placing the lower end of the test spring inside the positioning ring, and then pushing the connecting block downwards so that the upper end of the test spring inserts into the placement ring. Under the combined force of the placement ring, the first magnetic block, the connecting block, and the positioning rod, the placement ring will be fitted onto the upper end of the test spring. The positioning ring and placement ring restrict the test spring, preventing it from shifting arbitrarily during the spring test. When rotating the rotating rod so that the fixing block inserts into the limiting groove, the rotating rod fixes the support block in its current position, facilitating the installation of the test spring between the placement ring and the positioning ring. This prevents the support block from sliding in the connecting groove during test spring installation, making the installation of the test spring more stable and reliable, thereby increasing the practicality of the spring fatigue testing machine.

[0010] This utility model is further configured as follows: the compression mechanism includes multiple sliding grooves that pass through the mounting plate, the sliding grooves being aligned with the connecting grooves. A guide rail groove passes through the inner wall of each sliding groove, and a sliding block is slidably connected within the guide rail groove. A support groove communicating with the guide rail groove is provided on the mounting plate. A vertical block is fixedly connected to the sliding block, and a sliding frame is fixedly connected to the side of the vertical block away from the sliding block. A first slider is slidably connected within the sliding frame. An electric push rod is fixedly mounted on the mounting plate. A through groove is provided on one side of the sliding frame, and the telescopic end of the electric push rod is fixedly connected to the first slider through the through groove. A first magnetic block is fixedly connected to the side of the connecting block away from the positioning ring. An mounting groove is provided on the side of the sliding block near the first magnetic block, and an electromagnetic block is fixedly connected within the mounting groove. A support frame is fixedly connected to the fixed plate, and a rotating rod is rotatably connected to the support frame. A spring is provided on the rotating rod, with its inner end fixedly connected to the rotating rod and its outer end fixedly connected to the support frame. A limiting groove is provided on the support block, and a fixing block that can be inserted into the limiting groove is fixedly connected to the rotating rod.

[0011] By adopting the above technical solution, in the initial state, the surface of the support block away from the handle abuts against the inner wall of the connecting groove. When the electric actuator drives the first slider to reciprocate, it simultaneously drives the first slider to slide within the sliding frame. Because the sliding block is slidably connected to the guide rail groove, it simultaneously drives the sliding block to slide within the guide rail groove during this process. When the sliding block completely slides into the guide rail groove, the vertical block is located within the support groove. Therefore, by activating the electric actuator, the sliding block can be driven to slide further into the sliding groove or completely slide into the guide rail groove. When the sliding block completely slides into the guide rail groove, when the cylinder drives the mounting plate downward, because the sliding groove is aligned with the connecting block and the sliding groove is larger than the connecting block and the first magnetic block, the cylinder will not contact the first magnetic block or the connecting block when it moves downward. Consequently, it will not compress the test spring located between the positioning ring and the placement ring, and therefore, the current test spring will not be tested at this time. When the electric actuator drives the sliding block to slide into the sliding groove, the starting cylinder drives the mounting plate downward. At this time, the lower surface of the sliding block contacts the upper surface of the first magnetic block, and the electromagnetic block is in contact with the first magnetic block. As the mounting plate continues to move downward, it will compress the test spring, causing the test spring to deform. This allows for a compression test on the test spring (the fatigue test of the test spring begins, and the test process is existing technology and will not be described in detail here). Multiple test springs can be tested simultaneously, improving testing efficiency and the practicality of the spring fatigue testing machine.

[0012] At this time, as the starting cylinder drives the mounting plate upward, the electromagnetic block is activated. The electromagnetic block magnetically attracts the first magnetic block, which in turn drives the first magnetic block, connecting block, and placement ring upward as the mounting plate moves upward, until the weight of the placement ring itself no longer compresses the test spring. At this time, part of the upper end of the test spring is still inserted into the placement ring to limit the test spring, so as to avoid the weight of the first magnetic block, connecting block, and placement ring itself affecting the accuracy of the spring test.

[0013] In the initial state, the side of the fixed block closest to the motor abuts against the side of the support block furthest from the motor. At this time, the side of the support block furthest from the handle abuts against the inner wall of the connecting groove. With the cooperation of the limiting groove and the second slider, the fixed block has a fixing effect on the support block, preventing the support block from shaking during the compression test of the test spring, and increasing the stability and safety of the spring test.

[0014] When adding a test spring during a compression test, the appropriate electric actuator is activated to fully slide the sliding block into the guide rail groove. Then, the motor is started to rotate the fixed plate to the appropriate position. Next, the corresponding rotating rod is rotated, causing the fixed block to rotate until it disengages from the support block. During this process, the spring contracts and deforms. At this point, pulling the handle moves the support block away from the motor, thereby moving the placement ring and positioning ring away from the currently moving mounting plate. Because the corresponding sliding block is now fully within the guide rail groove, the movement of the mounting plate will not push the connecting block at its current position. The test spring to be tested is then installed on the placement ring and positioning ring. In between, push the handle so that the surface of the support block away from the handle abuts against the inner wall of the connecting groove. Then release the rotating rod, and the support block is fixed again by the release force of the spring. Then operate the control panel so that when the mounting plate moves upward and the sliding block is above the first magnetic block, the electric push rod is simultaneously activated to drive the sliding block into the sliding groove. Then, when the cylinder drives the mounting plate downward again, the corresponding sliding block will contact the first magnetic block, thereby compressing the corresponding test spring. Thus, new test springs can be added for testing without interrupting the testing of other test springs. The operation is simple, safe and reliable, improving the efficiency of spring testing and enhancing the practicality and working efficiency of the spring fatigue testing machine.

[0015] The beneficial effects of this utility model are as follows: When a test spring needs to be added during a compression test, a suitable electric actuator is activated to drive the sliding block to slide completely into the guide rail groove. Then, the motor is started to drive the fixed plate to rotate to a suitable position. Then, the corresponding rotating rod is rotated, causing the rotating rod to drive the fixed block to rotate until the fixed block separates from the support block. During this process, the spring is caused to contract and deform. At this time, pulling the handle causes the support block to move away from the motor, thereby moving the placement ring and positioning ring away from the mounting plate that is currently moving up and down. Because the corresponding sliding block is completely located in the guide rail groove, the movement of the mounting plate will not push the connecting block at the current position. At this time, the test spring to be tested is installed between the placement ring and the positioning ring. Pushing the handle causes the spring to be tested to slide into the guide rail groove. The support block's surface away from the handle abuts against the inner wall of the connecting groove. Then, the rotating rod is released, and the support block is re-fixed by the spring's release force. The control panel is then operated so that when the mounting plate moves upward until the sliding block is above the first magnetic block, the electric actuator is simultaneously activated, causing the sliding block to slide into the sliding groove. Then, during the next downward movement of the mounting plate by the cylinder, the corresponding sliding block will contact the first magnetic block, thus compressing the corresponding test spring. Multiple test springs can be tested simultaneously, improving testing efficiency. New test springs can be added without interrupting the testing of other springs. The operation is simple, safe, and reliable, improving the efficiency of spring testing and enhancing the practicality and working efficiency of the spring fatigue testing machine. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the mounting platform structure of this utility model; Figure 3 This is a schematic diagram of the positioning disc structure of this utility model; Figure 4 This is a schematic diagram of the fixed disk structure of this utility model; Figure 5 This is a schematic diagram of the bottom structure of the mounting plate of this utility model; Figure 6 This is a schematic diagram of the support block structure of this utility model.

[0017] In the picture: 1. Mounting platform; 2. Mounting bracket; 3. Positioning slot; 4. Cylinder; 5. Positioning plate; 6. Mounting plate; 7. Fixing plate; 8. Support block; 9. Connecting rod; 10. Fixing slot; 11. Motor; 12. Connecting block; 13. Connecting slot; 14. Limiting slot; 15. Placement ring; 16. Positioning ring; 17. Test spring; 18. Handle; 19. Positioning rod; 20. Fixing cylinder; 21. Stabilizing slot; 22. First magnetic block; 23. Sliding slot; 24. Guide rail slot; 25. Support slot; 26. First slider; 27. Through slot; 28. Sliding frame; 29. ​​Electric actuator; 30. Vertical block; 31. Sliding block; 32. Fixing block; 33. Mounting slot; 34. Electromagnetic block; 35. Rotating rod; 36. Support frame; 37. Spring; 38. Limiting slot; 39. Limiting block; 40. Second slider. Detailed Implementation

[0018] To facilitate a clear understanding of the technical means, creative features, objectives, and effects of this utility model, the following details... Figures 1 to 6 As shown, this utility model is further illustrated.

[0019] like Figures 1 to 3 As shown, this utility model is a spring fatigue testing machine, including a mounting platform 1. A mounting frame 2 is fixedly connected to the upper surface of the mounting platform 1. A positioning groove 3 is opened through the mounting frame 2. A positioning disk 5 is rotatably connected to the positioning groove 3 through a bearing. A cylinder 4 is fixedly connected to the positioning disk 5. A mounting disk 6 is fixedly installed at the output end of the cylinder 4. A fixed disk 7 is provided on the mounting platform 1. Multiple connecting rods 9 that slide through the mounting disk 6 are fixedly connected to the fixed disk 7. A rotating mechanism is provided on the mounting platform 1 to drive the fixed disk 7 to rotate. Multiple connecting grooves 13 are opened on the fixed disk 7 and are arranged in a circumferential array along the circumference of the fixed disk 7. A support block 8 is slidably connected in the connecting groove 13. A mounting mechanism is provided on the support block 8. A test spring 17 is provided on the mounting mechanism and is used to limit the test spring 17. Multiple compression mechanisms are provided on the mounting disk 6 to compress the test spring 17.

[0020] In use, the test spring 17 is installed on the mounting mechanism, which limits the test spring 17. Then, the cylinder 4 drives the mounting plate 6 to move downward. At this time, the corresponding compression mechanism can be activated. During the downward movement of the mounting plate 6, the compression mechanism can squeeze the test spring 17 to test it. Multiple test springs 17 can be tested at the same time, which improves the testing efficiency.

[0021] like Figures 1 to 6As shown, the rotating mechanism includes a fixed groove 10 opened on the mounting platform 1. A motor 11 is fixedly installed in the fixed groove 10. The output end of the motor 11 is poweredly connected to the fixed disk 7. The axis of the output end of the motor 11 is on the same axis as the axis of the fixed disk 7.

[0022] When in use, when the motor 11 is started, the motor 11 can drive the fixed plate 7 to rotate. Because the connecting rod 9 slides through the mounting plate 6, the rotation of the fixed plate 7 synchronously drives the mounting plate 6 to rotate. The mounting plate 6 synchronously drives the cylinder 4, the positioning plate 5 and the compression mechanism installed on the mounting plate 6 to rotate.

[0023] In this design, motor 11 is a motor with self-locking capabilities, such as a conical rotor motor.

[0024] like Figures 1 to 6 As shown, the installation mechanism includes a positioning ring 16 fixedly installed on the support block 8. One end of the test spring 17 can be inserted into the positioning ring 16. A fixing cylinder 20 is fixedly connected to the upper surface of the support block 8. A positioning rod 19 is slidably connected inside the fixing cylinder 20. One end of the positioning rod 19 away from the support block 8 extends out of the fixing cylinder 20 and is fixedly connected to a connecting block 12. A placement ring 15 is fixedly connected to the lower surface of the connecting block 12. The other end of the test spring 17 can be inserted into the placement ring 15. A stabilizing groove 21 is opened through the inside of the fixing cylinder 20. A limiting block 39 that is slidably connected to the stabilizing groove 21 is fixedly connected to the outer surface of the positioning rod 19. A handle 18 is fixedly connected to the support block 8.

[0025] like Figures 4 to 6 As shown, a limiting groove 14 is provided on one side of the connecting groove 13, and a second slider 40 that is slidably connected to the limiting groove 14 is fixedly connected to one side of the support block 8.

[0026] In use, push the connecting block 12 to move the positioning rod 19 upward, then place the lower end of the test spring 17 inside the positioning ring 16, and then push the connecting block 12 down so that the upper end of the test spring 17 is inserted into the placement ring 15. With the gravity of the placement ring 15, the first magnetic block 22, the connecting block 12 and the positioning rod 19, the placement ring 15 will be fitted onto the upper end of the test spring 17. The positioning ring 16 and the placement ring 15 have a restrictive effect on the test spring 17, preventing the test spring 17 from moving arbitrarily during the spring test. like Figures 3 to 6As shown, the compression mechanism includes multiple sliding grooves 23 that penetrate the mounting plate 6. The sliding grooves 23 extend from the upper and lower surfaces of the mounting plate 6 and are aligned with the connecting grooves 13. A guide rail groove 24 is provided through the inner wall of the sliding groove 23. The guide rail groove 24 is arc-shaped and the multiple guide rail grooves 24 are arranged in a circumferential array along the circumference of the mounting plate 6. The guide rail groove 24 and the mounting plate 6 are on the same center line. A sliding block 31 is slidably connected in the guide rail groove 24 and is adapted to the guide rail groove 24. A support groove 25 communicating with the guide rail groove 24 is provided on the mounting plate 6. A vertical block 30 is fixedly connected to the sliding block 31. A sliding frame 28 is fixedly connected to the side of the vertical block 30 away from the sliding block 31. A first slider 26 is slidably connected in the sliding frame 28. An electric push rod 29 is fixedly installed on the mounting plate 6. A through groove 27 is provided through one side of the sliding frame 28. The telescopic end of the electric push rod 29 is fixedly connected to the first slider 26 through the through groove 27.

[0027] like Figure 5 As shown, a first magnetic block 22 is fixedly connected to the side of the connecting block 12 away from the positioning ring 16, and an installation groove 33 is provided on the side of the sliding block 31 close to the first magnetic block 22. An electromagnetic block 34 is fixedly connected in the installation groove 33.

[0028] like Figures 4 to 6 As shown, a support frame 36 is fixedly connected to the fixed plate 7. The support frame 36 is U-shaped. A rotating rod 35 is rotatably connected to the support frame 36. The rotating rod 35 is rotatably connected to two vertical blocks of the support frame 36. A spring 37 is provided on the rotating rod 35. The inner end of the spring 37 is fixedly connected to the rotating rod 35, and the outer end of the spring 37 is fixedly connected to the support frame 36. The spring 37 is sleeved on the rotating rod 35. A limiting groove 38 is provided on the support block 8. A fixing block 32 that can be inserted into the limiting groove 38 is fixedly connected to the rotating rod 35. The fixing block 32 is fan-shaped. The fixing block 32 and the spring 37 are both located between the two vertical blocks of the support frame 36.

[0029] A control panel is provided on one side of the mounting platform 1. The control panel is electrically connected to the motor 11 and the cylinder 4.

[0030] In the initial state, the surface of the support block 8 away from the handle 18 abuts against the inner wall of the connecting groove 13. When the electric actuator 29 is activated, it drives the first slider 26 to reciprocate, simultaneously driving the first slider 26 to slide within the sliding frame 28. Because the sliding block 31 is slidably connected to the guide rail groove 24, the sliding block 31 also slides within the guide rail groove 24 during this process. When the sliding block 31 is completely slid into the guide rail groove 24, the vertical block 30 is located within the support groove 25. Therefore, by activating the electric actuator 29, the sliding block 31 can be driven to slide into the sliding groove 23 or completely slid into the guide rail groove 24. When the sliding block 31 is fully slid into the guide rail groove 24, the cylinder 4 is activated to drive the mounting plate 6 to move downward. Because the sliding groove 23 is aligned with the connecting block 12 and the sliding groove 23 is larger than the connecting block 12 and the first magnetic block 22, the cylinder 4 will not contact the first magnetic block 22 or the connecting block 12 when it moves downward. Therefore, it will not squeeze the test spring 17 located between the positioning ring 16 and the placement ring 15. So, the current test spring 17 will not be tested at this time. When the electric actuator 29 drives the sliding block 31 to slide into the sliding groove 23, the cylinder 4 drives the mounting plate 6 to move downward. At this time, the lower surface of the sliding block 31 contacts the upper surface of the first magnetic block 22, and the electromagnetic block 34 is in contact with the first magnetic block 22. As the mounting plate 6 continues to move downward, it will compress the test spring 17, causing the test spring 17 to deform. Then, the test spring 17 is subjected to a compression test (the fatigue test of the test spring 17 is started, and the test process is existing technology and will not be described in detail here). At the same time, multiple test springs 17 can be tested, which improves the test efficiency and the practicality of the spring fatigue testing machine.

[0031] At this time, as the cylinder 4 moves the mounting plate 6 upward, the electromagnetic block 34 is activated. The electromagnetic block 34 magnetically attracts the first magnetic block 22, which in turn moves the first magnetic block 22, the connecting block 12, and the placement ring 15 upward during the upward movement of the mounting plate 6, until the weight of the placement ring 15 no longer compresses the test spring 17 (at this time, part of the upper end of the test spring 17 is still inserted into the placement ring 15 to limit the test spring 17), so as to avoid the weight of the first magnetic block 22, the connecting block 12, and the placement ring 15 affecting the accuracy of the spring test.

[0032] In the initial state, the side of the fixing block 32 closest to the motor 11 abuts against the side of the support block 8 furthest from the motor 11. At this time, the side of the support block 8 furthest from the handle 18 abuts against the inner wall of the connecting groove 13. With the cooperation of the limiting groove 14 and the second slider 40, the fixing block 32 has a fixing effect on the support block 8, preventing the support block 8 from shaking during the compression test of the test spring 17, and increasing the stability and safety during the spring test.

[0033] When a compression test is required with an additional test spring 17, the appropriate electric actuator 29 is activated to fully slide the sliding block 31 into the guide rail groove 24. Then, the motor 11 is activated to rotate the fixed plate 7 to the appropriate position. The corresponding rotating rod 35 is then rotated, causing the fixed block 32 to rotate until it disengages from the support block 8. During this process, the spring 37 contracts and deforms. At this point, the pull handle 18 moves the support block 8 away from the motor 11, thereby moving the placement ring 15 and the positioning ring 16 away from the mounting plate 6, which is currently moving up and down. Because the corresponding sliding block 31 is completely within the guide rail groove 24, the movement of the mounting plate 6 will not push the connecting block 12 at its current position. The test spring 17 to be tested is then installed on the placement ring 15. Between the positioning ring 16 and the handle 18, push the handle 18 so that the side surface of the support block 8 away from the handle 18 abuts against the inner wall of the connecting groove 13. Then release the rotating rod 35, and under the release force of the spring 37, fix the support block 8 again. Then operate the control panel so that when the mounting plate 6 moves upward and the sliding block 31 is above the first magnetic block 22, the electric push rod 29 is started to drive the sliding block 31 to slide into the sliding groove 23. Then, when the cylinder 4 drives the mounting plate 6 downward again, the corresponding sliding block 31 will contact the first magnetic block 22, thereby squeezing the corresponding test spring 17. Thus, without interrupting the testing of other test springs 17, a new test spring 17 can be added for testing. The operation is simple, safe and reliable, improves the efficiency of spring testing, and improves the practicality and working efficiency of the spring fatigue testing machine.

[0034] In this design, when the rotating rod 35 is rotated so that the fixing block 32 is inserted into the limiting groove 38, the rotating rod 35 fixes the support block 8 in the current position, which makes it convenient to install the test spring 17 between the placement ring 15 and the positioning ring 16. This prevents the support block 8 from sliding in the connecting groove 13 when installing the test spring 17, making the installation of the test spring 17 more stable and reliable, thereby increasing the practicality of the spring fatigue testing machine.

[0035] 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, and various changes and modifications can be made without departing from the spirit and scope of this utility model. All such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A spring fatigue testing machine, comprising a mounting platform (1), characterized in that: The mounting platform (1) is fixedly connected to the upper surface of the mounting frame (2). The mounting frame (2) is provided with a positioning groove (3). The positioning groove (3) is rotatably connected to the positioning plate (5). The positioning plate (5) is fixedly connected to the cylinder (4). The output end of the cylinder (4) is fixedly installed with the mounting plate (6). The mounting platform (1) is provided with a fixed plate (7). The fixed plate (7) is fixedly connected with multiple connecting rods (9) that pass through the mounting plate (6). The mounting platform (1) is provided with a rotating mechanism. The rotating mechanism is used to drive the fixed plate (7) to rotate. The fixed plate (7) is provided with multiple connecting grooves (13). The connecting grooves (13) are slidably connected to the support block (8). The support block (8) is provided with an installation mechanism. The installation mechanism is provided with a test spring (17). The installation mechanism is used to limit the test spring (17). The mounting plate (6) is provided with multiple compression mechanisms. The compression mechanisms are used to compress the test spring (17).

2. A spring fatigue testing machine according to claim 1, characterized in that: The rotating mechanism includes a fixed groove (10) opened on the mounting platform (1), and a motor (11) is fixedly installed in the fixed groove (10). The output end of the motor (11) is connected to the fixed plate (7) for power.

3. A spring fatigue testing machine according to claim 1, characterized in that: The installation mechanism includes a positioning ring (16) fixedly installed on the support block (8), one end of the test spring (17) can be inserted into the positioning ring (16), a fixing cylinder (20) is fixedly connected to the upper surface of the support block (8), a positioning rod (19) is slidably connected inside the fixing cylinder (20), one end of the positioning rod (19) away from the support block (8) extends out of the fixing cylinder (20) and is fixedly connected to a connecting block (12), a placement ring (15) is fixedly connected to the lower surface of the connecting block (12), the other end of the test spring (17) can be inserted into the placement ring (15), a stabilizing groove (21) is opened through the inside of the fixing cylinder (20), and a limiting block (39) that is slidably connected to the stabilizing groove (21) is fixedly connected to the outer surface of the positioning rod (19).

4. A spring fatigue testing machine according to claim 1, characterized in that: A limiting groove (14) is provided on one side of the connecting groove (13), and a second slider (40) that is slidably connected to the limiting groove (14) is fixedly connected to one side of the support block (8).

5. A spring fatigue testing machine as claimed in claim 1, wherein: The compression mechanism includes multiple sliding grooves (23) that are opened through the mounting plate (6). The sliding grooves (23) are aligned with the connecting grooves (13). A guide rail groove (24) is opened through the inner wall of the sliding groove (23). A sliding block (31) is slidably connected in the guide rail groove (24). A support groove (25) communicating with the guide rail groove (24) is opened on the mounting plate (6). A vertical block (30) is fixedly connected to the sliding block (31). A sliding frame (28) is fixedly connected to the side of the vertical block (30) away from the sliding block (31). A first slider (26) is slidably connected in the sliding frame (28). An electric push rod (29) is fixedly installed on the mounting plate (6). A through groove (27) is opened through one side of the sliding frame (28). The telescopic end of the electric push rod (29) is fixedly connected to the first slider (26) through the through groove (27).

6. A spring fatigue testing machine according to claim 3, wherein: The first magnetic block (22) is fixedly connected to the side of the connecting block (12) away from the positioning ring (16), and the sliding block (31) has an installation groove (33) on the side close to the first magnetic block (22), and an electromagnetic block (34) is fixedly connected in the installation groove (33).

7. A spring fatigue testing machine as claimed in claim 1, wherein: A support frame (36) is fixedly connected to the fixed plate (7). A rotating rod (35) is rotatably connected to the support frame (36). A spring (37) is provided on the rotating rod (35). The inner end of the spring (37) is fixedly connected to the rotating rod (35), and the outer end of the spring (37) is fixedly connected to the support frame (36). A limiting groove (38) is provided on the support block (8). A fixing block (32) that can be inserted into the limiting groove (38) is fixedly connected to the rotating rod (35).

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