A testing device for shock absorber springs in automotive suspension systems

Abstract

This invention relates to the field of measurement and testing technology, and discloses a testing device for shock-absorbing springs in automotive suspension systems. The device includes a workbench with two support platforms mounted on its upper side. An adjustment mechanism is provided on the workbench. A limit groove is formed on the left side of the workbench, and a limit block is slidably connected inside the limit groove. A connecting rod is fixedly connected to the left side of the limit block, and a fixing frame extends from the left side of the connecting rod. A first clamping block is fixedly connected to the left side of the connecting rod, and a second clamping block is provided in front of the first clamping block. Both the first and second clamping blocks are equipped with clamping mechanisms and rotating mechanisms. Through the first and second clamping blocks and the multi-directional clamping mechanisms, the leaf spring can be securely clamped from both above and below, and left and right. Combined with the rotating mechanism and the top block limit, the clamping angle can be precisely adjusted, effectively preventing lateral displacement, loosening, or detachment of the leaf spring during testing, ensuring a firm and reliable clamping.

Description

Technical Field

[0001] This invention relates to the field of measurement and testing technology, specifically to a testing device for shock-absorbing springs in automotive suspension systems. Background Technology

[0002] Shock absorber springs in automotive suspension systems are core components that ensure vehicle stability, ride comfort, and driving safety. Leaf springs are a common type of shock absorber spring, and their static stiffness directly determines the shock absorption effect of the suspension system, thus affecting the vehicle's handling performance and ride smoothness. Therefore, accurate static stiffness testing of leaf springs is a crucial step in the production and testing process of automotive parts, and an important means of ensuring product quality and avoiding vehicle malfunctions caused by substandard spring stiffness.

[0003] However, most existing leaf spring static stiffness testing equipment on the market uses a single-direction clamping mechanism, which cannot securely clamp the leaf spring from multiple directions such as up, down, left, and right. Furthermore, it lacks precise angle adjustment and limiting structures, making the leaf spring prone to lateral displacement, loosening, or even falling off during the test. This results in uneven application of loading force, directly affecting the accuracy of the test data and failing to truly reflect the actual stiffness performance of the leaf spring. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a testing device for shock-absorbing springs in automotive suspension systems. Through the first clamping block and the second clamping block in conjunction with a multi-directional clamping mechanism, the leaf spring can be securely clamped from both above and below and left and right. Combined with the rotating mechanism and the top block limit, the clamping angle can be precisely adjusted, effectively preventing lateral displacement, loosening or falling off of the leaf spring during testing, and ensuring a firm and reliable clamping.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a testing device for shock-absorbing springs of an automotive suspension system, comprising a workbench, two support platforms mounted on the upper side of the workbench, both support platforms being U-shaped blocks, and the two support platforms being arranged symmetrically front and back;

[0008] Positioning rods are installed on the left side of both support platforms. The right ends of the two positioning rods pass through the corresponding support platforms. The two positioning rods can pass through the lugs of the leaf springs to install the leaf springs on the two support platforms. An adjustment mechanism is provided on the worktable.

[0009] The adjustment mechanism includes a transmission groove, two connection ports, two moving blocks, a connecting shaft, gears, two toothed plates, and an electric push rod;

[0010] A limiting groove is provided on the left side of the workbench. The limiting groove is a convex groove and a fixed frame extends from the left side. A limiting block is slidably connected inside the limiting groove.

[0011] The limiting block is a rectangular block and is slidably connected inside the limiting groove. The connecting rod is fixedly connected to the left side of the limiting block, and the left side of the connecting rod extends out of the fixing frame.

[0012] A first clamping block is fixedly connected to the left side of the connecting rod, and a second clamping block is provided on the front side of the first clamping block. The first clamping block and the second clamping block are located in the groove of the hydraulic block.

[0013] Both the first and second clamping blocks are equipped with clamping mechanisms. The two clamping mechanisms have the same connection structure and are arranged symmetrically front and back. The following description will focus on the clamping mechanism on the second clamping block.

[0014] The clamping mechanism includes two clamping plates, an adjusting groove, two adjusting sliders, a drive shaft, two threaded rods, a worm gear, a motor assembly, a worm, and two dustproof blocks;

[0015] A rotating mechanism is provided on the first clamping block and the second clamping block;

[0016] The rotating mechanism includes an anti-detachment ring groove, a connecting ring groove, a connecting block, an anti-detachment block, a first top block, and a second top block.

[0017] Preferably, a fixed frame is fixedly connected to the upper side of the workbench, and a hydraulic press assembly is fixedly connected to the upper side of the fixed frame;

[0018] The hydraulic rod of the hydraulic press assembly slides through the fixed frame, and a hydraulic block is fixedly connected to the lower end of the hydraulic rod of the hydraulic press assembly;

[0019] The hydraulic block is an inverted U-shaped block, with a pressure sensor installed on the lower side of the hydraulic block, and a control panel is fixedly connected to the front side of the worktable.

[0020] Preferably, the transmission groove is formed inside the workbench, and both connection ports are formed on the top wall of the transmission groove, with the upper side of both connection ports extending out of the workbench.

[0021] The two connection ports are symmetrically arranged front and back, and the two moving blocks are slidably connected inside the transmission groove. Both moving blocks are T-shaped blocks.

[0022] The upper sides of the two movable blocks extend out of the worktable through the two connection ports respectively, and the upper sides of the two movable blocks are fixedly connected to the two support platforms respectively. The connecting shaft is set inside the transmission groove.

[0023] Preferably, the upper and lower ends of the connecting shaft are rotatably connected to the top and bottom walls of the transmission groove, respectively, and the gear is fixedly sleeved on the outer surface of the connecting shaft.

[0024] Two toothed plates are respectively set on the left and right sides of the gear. Both toothed plates are meshed with the gear. The right toothed plate is fixedly connected to the front moving block, and the left toothed plate is fixedly connected to the rear moving block.

[0025] The electric push rod is fixedly connected to the front side of the worktable. The telescopic rod of the electric push rod slides into the interior of the transmission groove. The telescopic rod of the electric push rod is fixedly connected to the front moving block.

[0026] Preferably, both clamping plates are mounted on the second clamping block, and the adjusting groove is formed on the right wall of the second clamping block. The adjusting groove is a convex groove.

[0027] Both adjusting sliders are slidably connected inside the adjusting groove. Both adjusting sliders are convex blocks and are arranged symmetrically up and down.

[0028] The left side of each of the two adjusting sliders extends into an adjusting groove, and the left side of each of the two adjusting sliders is fixedly connected to two clamping plates respectively. The drive shaft is installed inside the adjusting groove.

[0029] Preferably, the drive shaft is positioned between the two adjusting sliders, and the two threaded rods are respectively fixedly connected to the upper and lower ends of the drive shaft;

[0030] The ends of the two threaded rods that are far apart from each other pass through the two adjusting sliders respectively, and the ends of the two threaded rods that are far apart from each other are rotatably connected to the top wall and bottom wall of the adjusting groove respectively;

[0031] The two threaded rods have opposite thread directions, the worm gear is fixedly sleeved on the outer surface of the drive shaft, and the motor assembly is fixedly connected to the front side of the second clamping block.

[0032] Preferably, the output shaft of the motor assembly extends rotatably into the interior of the adjustment groove, and the worm gear is fixedly connected to the rear end of the output shaft of the motor assembly;

[0033] The rear end of the worm is rotatably connected to the rear wall of the adjusting groove. The worm is meshed with the worm wheel. Both dustproof blocks are fixedly connected to the right wall of the second clamping block.

[0034] Two dustproof blocks are symmetrically arranged on the front and back sides of the adjustment slot. The opposite sides of the two dustproof blocks are covered with bristles, which can cover the adjustment slot.

[0035] Preferably, the anti-detachment ring groove is formed inside the first clamping block, and the anti-detachment ring groove is an arc-shaped groove, while the connecting ring groove is formed on the front side of the first clamping block;

[0036] The rear side of the connecting ring groove extends into the interior of the anti-detachment ring groove. The connecting block is fixedly connected to the rear side of the second clamping block, and the rear side of the connecting block extends through the connecting ring groove into the interior of the anti-detachment ring groove.

[0037] Preferably, the anti-detachment block is fixedly connected to the rear side of the connecting block, and the anti-detachment block is slidably connected inside the anti-detachment ring groove;

[0038] The first top block is fixedly connected to the upper side of the outer surface of the first clamping block, and the second top block is fixedly connected to the right side of the outer surface of the second clamping block.

[0039] (III) Beneficial Effects

[0040] Compared with the prior art, the present invention provides a testing device for shock absorber springs in automotive suspension systems, which has the following advantages:

[0041] (1) The testing equipment for the shock-absorbing spring of the automobile suspension system can securely clamp the leaf spring from both the top and bottom and left and right sides by using the first clamping block and the second clamping block in conjunction with the multi-directional clamping mechanism. Combined with the rotating mechanism and the top block limit, the clamping angle can be precisely adjusted, effectively preventing lateral displacement, loosening or falling off of the leaf spring during testing, and ensuring that the clamping is firm and reliable.

[0042] (2) The test equipment for the shock-absorbing spring of the automobile suspension system is linked with the electric push rod through the gear plate transmission mechanism to realize the synchronous reverse movement of the front and rear support platforms, which can adapt to the test requirements of steel leaf springs of different lengths. Compared with the traditional fixed spacing design, it avoids the clamping difficulties or test errors caused by the mismatch of spring lengths.

[0043] (3) The test equipment for the shock absorber spring of the automobile suspension system, the first clamping block and the second clamping block are driven by an independent motor to drive the worm gear and threaded rod mechanism to realize the synchronous movement of the four clamping plates in opposite directions. The reverse design of the threaded rod ensures that the clamping force is evenly distributed, avoiding the problem of uneven clamping force caused by the difference in operation of traditional manual clamps.

[0044] (4) The testing equipment for the shock absorber spring of the automobile suspension system effectively blocks the intrusion of external dust by covering the adjustment groove with brush bristles, avoids wear of key parts such as sliders and threaded rods, reduces adjustment jamming, reduces equipment maintenance frequency and cost, and improves the overall service life of the equipment.

[0045] (5) The testing equipment for the shock absorber spring of the automobile suspension system, the cooperation of the limiting groove and the limiting block, effectively guides and limits the clamping mechanism to prevent it from being deviated by force, the power transmission of the adjustment mechanism is stable, the spacing of the support platform is adjusted synchronously and accurately, and the entire testing process is stable and orderly, meeting the needs of industrial production for testing efficiency, accuracy and stability. Attached Figure Description

[0046] Figure 1 This is a schematic diagram of the structure of a test device for a shock-absorbing spring in an automotive suspension system according to the present invention;

[0047] Figure 2This is a cross-sectional connection diagram of the workbench of the present invention;

[0048] Figure 3 This is a cross-sectional connection diagram of the fixing frame of the present invention;

[0049] Figure 4 This is a schematic diagram of the connection structure of the first clamping block and the second clamping block when in use.

[0050] Figure 5 This is a schematic diagram of the cross-sectional connection structure of the second clamping block of the present invention;

[0051] Figure 6 This is a schematic diagram of the cross-sectional connection structure of the first clamping block of the present invention;

[0052] Figure 7 This is a schematic diagram of the connection structure on the rear side of the second clamping block of the present invention.

[0053] In the diagram: 1. Workbench; 2. Fixing frame; 3. Hydraulic press assembly; 4. Hydraulic block; 5. Control panel; 6. Support platform; 7. Positioning rod; 8. Transmission groove; 9. Connection port; 10. Moving block; 11. Connecting shaft; 12. Gear; 13. Gear plate; 14. Electric push rod; 15. Limiting groove; 16. Limiting block; 17. Connecting rod; 18. First clamping block; 19. Second clamping block; 20. Clamping plate; 21. Adjusting groove; 22. Adjusting slider; 23. Transmission shaft; 24. Threaded rod; 25. Worm gear; 26. Motor assembly; 27. Worm; 28. Dustproof block; 29. ​​Anti-detachment ring groove; 30. Connecting ring groove; 31. Connecting block; 32. Anti-detachment block; 33. First top block; 34. Second top block. Detailed Implementation

[0054] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0055] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0056] In the description of this invention, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0057] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0058] Please see Figures 1 to 7 This invention provides a new technical solution: a testing device for shock absorber springs in an automotive suspension system, comprising a workbench 1, a fixed frame 2 fixedly connected to the upper side of the workbench 1, a hydraulic press assembly 3 fixedly connected to the upper side of the fixed frame 2, a hydraulic rod of the hydraulic press assembly 3 slidingly passing through the fixed frame 2, a hydraulic block 4 fixedly connected to the lower end of the hydraulic rod of the hydraulic press assembly 3, the hydraulic block 4 being an inverted U-shaped block, a pressure sensor mounted on the lower side of the hydraulic block 4, a control panel 5 fixedly connected to the front side of the workbench 1, and two support platforms 6 mounted on the upper side of the workbench 1. Each support platform 6 is a U-shaped block, and the two support platforms 6 are arranged symmetrically front and back. Positioning rods 7 are installed on the left side of each support platform 6, and the right ends of the two positioning rods 7 pass through the corresponding support platform 6. The two positioning rods 7 can pass through the lugs of the leaf springs to install the leaf springs on the two support platforms 6. An adjustment mechanism is provided on the worktable 1, which includes a transmission groove 8, two connecting ports 9, two moving blocks 10, a connecting shaft 11, a gear 12, two toothed plates 13, and an electric push rod 14. A limit groove 15 is provided on the left side of the worktable 1 for limiting... The groove 15 is a convex groove with a fixing frame 2 extending from its left side. A limiting block 16 is slidably connected inside the limiting groove 15. The limiting block 16 is a rectangular block and is slidably connected inside the limiting groove 15. A connecting rod 17 is fixedly connected to the left side of the limiting block 16. The fixing frame 2 extends from the left side of the connecting rod 17. A first clamping block 18 is fixedly connected to the left side of the connecting rod 17. A second clamping block 19 is provided on the front side of the first clamping block 18. Both the first clamping block 18 and the second clamping block 19 are located in the groove of the hydraulic block 4. Both the first clamping block 18 and the second clamping block 19 are provided with clamping mechanisms. The two clamping mechanisms have the same connection structure and are arranged symmetrically front and back. The following description focuses on the clamping mechanism on the second clamping block 19. The clamping mechanism includes two clamping plates 20, an adjustment groove 21, two adjustment sliders 22, a transmission shaft 23, two threaded rods 24, a worm gear 25, a motor assembly 26, a worm 27, and two dustproof blocks 28. The first clamping block 18 and the second clamping block 19 are provided with a rotating mechanism. The rotating mechanism includes an anti-detachment ring groove 29, a connecting ring groove 30, a connecting block 31, an anti-detachment block 32, a first top block 33, and a second top block 34.

[0059] The transmission groove 8 is located inside the worktable 1. Two connection ports 9 are located on the top wall of the transmission groove 8, with the upper sides of each port extending out of the worktable 1. The two connection ports 9 are symmetrically arranged front and back. Two moving blocks 10 are slidably connected inside the transmission groove 8. Both moving blocks 10 are T-shaped blocks, with their upper sides extending out of the worktable 1 through the two connection ports 9. The upper sides of the two moving blocks 10 are fixedly connected to two support platforms 6. A connecting shaft 11 is located inside the transmission groove 8, with its upper and lower ends... The gear 12 is fixedly sleeved on the outer surface of the connecting shaft 11 and is connected to the top and bottom walls of the transmission groove 8. Two toothed plates 13 are respectively set on the left and right sides of the gear 12. Both toothed plates 13 are meshed with the gear 12. The right toothed plate 13 is fixedly connected to the front moving block 10, and the left toothed plate 13 is fixedly connected to the rear moving block 10. The electric push rod 14 is fixedly connected to the front side of the worktable 1. The telescopic rod of the electric push rod 14 slides into the interior of the transmission groove 8. The telescopic rod of the electric push rod 14 is fixedly connected to the front moving block 10.

[0060] Two clamping plates 20 are mounted on the second clamping block 19. An adjusting groove 21 is formed on the right wall of the second clamping block 19. The adjusting groove 21 is a convex groove. Two adjusting sliders 22 are slidably connected inside the adjusting groove 21. Both adjusting sliders 22 are convex blocks and are arranged symmetrically vertically. The left side of each adjusting slider 22 extends out of the adjusting groove 21. The left side of each adjusting slider 22 is fixedly connected to the two clamping plates 20. A drive shaft 23 is installed inside the adjusting groove 21 and positioned between the two adjusting sliders 22. Two threaded rods 24 are fixedly connected to the upper and lower ends of the drive shaft 23, respectively. The ends of the two threaded rods 24 that are far apart from each other thread through the two adjusting sliders 22. The two threaded rods 24 are rotatably connected to the top and bottom walls of the adjustment groove 21, respectively, and the threads of the two threaded rods 24 are opposite. The worm gear 25 is fixedly sleeved on the outer surface of the transmission shaft 23. The motor assembly 26 is fixedly connected to the front side of the second clamping block 19. The output shaft of the motor assembly 26 extends rotatably into the interior of the adjustment groove 21. The worm 27 is fixedly connected to the rear end of the output shaft of the motor assembly 26. The rear end of the worm 27 is rotatably connected to the rear wall of the adjustment groove 21. The worm 27 meshes with the worm gear 25. The two dustproof blocks 28 are fixedly connected to the right wall of the second clamping block 19. The two dustproof blocks 28 are symmetrically arranged on the front and rear sides of the adjustment groove 21. The opposite sides of the two dustproof blocks 28 are bristles, and the bristles of the two dustproof blocks 28 can cover the adjustment groove 21.

[0061] An anti-detachment ring groove 29 is formed inside the first clamping block 18. The anti-detachment ring groove 29 is an arc-shaped groove. A connecting ring groove 30 is formed on the front side of the first clamping block 18. The rear side of the connecting ring groove 30 extends into the interior of the anti-detachment ring groove 29. A connecting block 31 is fixedly connected to the rear side of the second clamping block 19. The rear side of the connecting block 31 extends through the connecting ring groove 30 into the interior of the anti-detachment ring groove 29. An anti-detachment block 32 is fixedly connected to the rear side of the connecting block 31. The anti-detachment block 32 is slidably connected into the interior of the anti-detachment ring groove 29. A first top block 33 is fixedly connected to the upper side of the outer surface of the first clamping block 18. A second top block 34 is fixedly connected to the right side of the outer surface of the second clamping block 19.

[0062] Furthermore, before the test begins, the user activates the electric push rod 14 according to the length of the leaf spring to be tested. The telescopic rod of the electric push rod 14 drives the front moving block 10 to slide inside the transmission groove 8. The front moving block 10 drives the right toothed plate 13 to move. The right toothed plate 13 drives the gear 12 to rotate around the connecting shaft 11. The gear 12 drives the left toothed plate 13 to move in the opposite direction. The left toothed plate 13 drives the rear moving block 10 to move synchronously. The two moving blocks 10 pass through the two connecting ports 9 respectively, thereby driving the two support platforms 6 to move synchronously in the opposite direction, completing the spacing adjustment of the two support platforms 6. After the spacing adjustment is completed, the leaf spring is placed on the two support platforms 6, and the two positioning rods 7 are pushed. The two positioning rods 7 pass through the lugs of the leaf spring, positioning and installing the leaf spring on the two support platforms 6.

[0063] At this time, the leaf spring extends between the two clamping plates 20 of the first clamping block 18 and the two clamping plates 20 of the second clamping block 19. The user rotates the second clamping block 19, which drives the connecting block 31 to move. The connecting block 31 drives the anti-detachment block 32 to slide inside the anti-detachment ring groove 29. The connecting ring groove 30 provides movement space for the connecting block 31. The anti-detachment block 32 cooperates with the anti-detachment ring groove 29 to prevent the second clamping block 19 from falling off. The first top block 33 and the second top block 34 cooperate to limit the rotation angle of the second clamping block 19. After rotation, the first clamping block 18 corresponds to the upper and lower sides of the leaf spring, and the second clamping block 19 corresponds to the left and right sides of the leaf spring.

[0064] Then, the motor assembly 26 on the first clamping block 18 and the second clamping block 19 is activated. The output shaft of the motor assembly 26 drives the worm gear 27 to rotate, the worm gear 27 drives the worm wheel 25 to rotate, the worm wheel 25 drives the transmission shaft 23 to rotate, and the transmission shaft 23 drives the two threaded rods 24 to rotate synchronously. The two threaded rods 24 with opposite directions of rotation drive the two adjusting sliders 22 to move towards each other inside the adjusting groove 21. The two adjusting sliders 22 drive the two clamping plates 20 to move closer to each other. The two clamping plates 20 on the first clamping block 18 clamp and fix the upper and lower sides of the leaf spring, and the two clamping plates 20 on the second clamping block 19 clamp and fix the left and right sides of the leaf spring. The two dustproof blocks 28 block the adjusting groove 21 with brush bristles to prevent dust from entering the adjusting groove 21.

[0065] After clamping and fixing, start the hydraulic press assembly 3 through the control panel 5. The hydraulic rod of the hydraulic press assembly 3 drives the hydraulic block 4 to move downward. The pressure sensor on the lower side of the hydraulic block 4 contacts the leaf spring and applies pressure to complete the stiffness test of the leaf spring.

[0066] During the test, the leaf spring deforms under stress, which moves the first clamping block 18. The first clamping block 18 moves the connecting rod 17, and the connecting rod 17 moves the limiting block 16 to slide inside the limiting groove 15. The limiting block 16 and the limiting groove 15 cooperate to guide and limit the movement of the first clamping block 18, ensuring the stability of the test process. The workbench 1 provides support for the overall equipment, and the fixed frame 2 provides fixed support for the hydraulic press assembly 3. The test data is transmitted to the control panel 5 through the pressure sensor for acquisition and display, completing the static stiffness test of the leaf spring.

[0067] Structural Description: Workbench 1: Workbench 1 is the basic load-bearing component of the entire testing equipment. The upper side of workbench 1 is used to fix and install components such as the fixing frame 2 and the support platform 6. The interior of workbench 1 is used to open the transmission groove 8. The front side of workbench 1 is used to fix and connect the control panel 5. The left side of workbench 1 is used to open the limit groove 15. Workbench 1 provides stable support for all components of the equipment, ensuring that the equipment as a whole does not shake or shift during the test, thus ensuring the stability of the test.

[0068] Fixture 2: Fixture 2 is fixedly connected to the upper side of the workbench 1. The upper side of fixture 2 is used to fix the hydraulic press assembly 3. The middle part of fixture 2 is used to allow the hydraulic rod of hydraulic press assembly 3 to slide through. Fixture 2 provides fixed support for hydraulic press assembly 3, restricts the installation position of hydraulic press assembly 3, ensures that the hydraulic rod of hydraulic press assembly 3 can apply pressure vertically downward, and ensures the accuracy of loading test.

[0069] Hydraulic press assembly 3: Hydraulic press assembly 3 is fixedly connected to the upper side of the fixed frame 2. The hydraulic rod of hydraulic press assembly 3 can slide through the fixed frame 2. Hydraulic press assembly 3 provides the static loading force required for testing. During testing, hydraulic press assembly 3 is started through control panel 5. The hydraulic rod of hydraulic press assembly 3 drives hydraulic block 4 to move downward, thereby driving pressure sensor to contact the leaf spring and apply pressure, thus completing the stiffness loading test of leaf spring.

[0070] Hydraulic block 4: Hydraulic block 4 is fixedly connected to the lower end of the hydraulic rod of hydraulic press assembly 3. Hydraulic block 4 is an inverted U-shaped block. The lower side of hydraulic block 4 is used to install pressure sensor. The groove of hydraulic block 4 is used to place first clamping block 18 and second clamping block 19. Hydraulic block 4 transmits the loading force of hydraulic press assembly 3 and evenly transmits the driving force of hydraulic press assembly 3 to pressure sensor. At the same time, it provides a space for the first clamping block 18 and second clamping block 19 to avoid interference with the clamping blocks during loading.

[0071] Control Panel 5: Control Panel 5 is fixedly connected to the front side of the workbench 1. Control Panel 5 realizes the overall control of the equipment and data acquisition and display. Before the test, test parameters are set through Control Panel 5. During the test, components such as hydraulic press assembly 3 and motor assembly 26 are started and stopped through Control Panel 5. At the same time, test data transmitted by pressure sensor is received and displayed, which makes it convenient for users to observe the test situation and record the test results.

[0072] Support platform 6: There are two support platforms 6 in total. Both support platforms 6 are installed on the upper side of the workbench 1. Both support platforms 6 are U-shaped blocks and are arranged symmetrically front and back. The upper side of the two support platforms 6 is used to place the leaf spring, and the left side of the two support platforms 6 is used to install the positioning rod 7. The two support platforms 6 support the leaf spring to be tested, providing a stable placement platform for the leaf spring. At the same time, they work with the positioning rod 7 to achieve the initial positioning of the leaf spring, ensuring that the leaf spring does not undergo lateral displacement during the test.

[0073] Positioning rods 7: There are two positioning rods 7 in total. The two positioning rods 7 are installed on the left side of the two support platforms 6 respectively. The right ends of the two positioning rods 7 pass through the corresponding support platforms 6 respectively. The positioning rods 7 position and fix the leaf spring. During the test, the two positioning rods 7 are passed through the lugs of the leaf spring, and then the leaf spring is fixedly installed on the two support platforms 6 to prevent the leaf spring from loosening or falling off during the test and to ensure the stability of the clamping.

[0074] Transmission groove 8: The transmission groove 8 is located inside the worktable 1. The interior of the transmission groove 8 is used to install components such as the moving block 10, connecting shaft 11, gear 12, and gear plate 13. The top wall of the transmission groove 8 is used to open two connection ports 9. The transmission groove 8 provides installation and movement space for each component of the adjustment mechanism, restricts the movement trajectory of each component, and ensures that the adjustment mechanism can stably and smoothly drive the support table 6 to move.

[0075] Connection port 9: There are two connection ports 9 in total. Both connection ports 9 are opened on the top wall of the transmission groove 8. The upper side of both connection ports 9 extends out to the worktable 1. The two connection ports 9 are arranged symmetrically front and back. The connection ports 9 provide a through channel for the moving block 10, allowing the upper side of the moving block 10 to pass through the connection port 9 to extend out to the worktable 1 and be fixedly connected to the support platform 6, so as to realize the power transmission between the moving block 10 and the support platform 6.

[0076] Movable blocks 10: There are two movable blocks 10 in total. Both movable blocks 10 are slidably connected inside the transmission groove 8. Both movable blocks 10 are T-shaped blocks. The upper sides of the two movable blocks 10 extend out of the worktable 1 through the two connection ports 9 respectively. The upper sides of the two movable blocks 10 are fixedly connected to the two support platforms 6 respectively. The two movable blocks 10 transmit power. The front movable block 10 receives the driving force of the electric push rod 14, and the rear movable block 10 receives the driving force of the toothed plate 13. The two movable blocks 10 slide synchronously in opposite directions, thereby driving the two support platforms 6 to move synchronously in opposite directions, so as to realize the adjustment of the spacing of the support platforms 6.

[0077] Connecting shaft 11: The connecting shaft 11 is located inside the transmission groove 8. The upper and lower ends of the connecting shaft 11 are rotatably connected to the top and bottom walls of the transmission groove 8, respectively. The outer surface of the connecting shaft 11 is used to fix the gear 12. The connecting shaft 11 provides a fixed mounting and rotation carrier for the gear 12, allowing the gear 12 to rotate stably around the connecting shaft 11, thereby driving the two gear plates 13 to move in opposite directions, realizing the transmission of power and steering.

[0078] Gear 12: Gear 12 is fixedly sleeved on the outer surface of connecting shaft 11. Gear 12 meshes with two toothed plates 13 on the left and right sides respectively. Gear 12 transmits power and changes the direction of movement. When the right toothed plate 13 moves under the drive of the moving block 10, gear 12 rotates around connecting shaft 11, thereby driving the left toothed plate 13 to move in the opposite direction, realizing the synchronous reverse movement of the two moving blocks 10.

[0079] Toothed plate 13: There are two toothed plates 13, which are respectively set on the left and right sides of the gear 12. Both toothed plates 13 are meshed with the gear 12. The right toothed plate 13 is fixedly connected to the front moving block 10, and the left toothed plate 13 is fixedly connected to the rear moving block 10. The toothed plates 13 transmit power. The right toothed plate 13 transmits the driving force of the front moving block 10 to the gear 12, and the left toothed plate 13 transmits the driving force of the gear 12 to the rear moving block 10, so as to realize the synchronous reverse sliding of the two moving blocks 10.

[0080] Electric push rod 14: The electric push rod 14 is fixedly connected to the front side of the workbench 1. The telescopic rod of the electric push rod 14 slides into the interior of the transmission groove 8. The telescopic rod of the electric push rod 14 is fixedly connected to the front moving block 10. The electric push rod 14 provides power to the adjustment mechanism. Before testing, the user starts the electric push rod 14. The telescopic rod of the electric push rod 14 extends and retracts, causing the front moving block 10 to slide inside the transmission groove 8, thereby driving the entire adjustment mechanism to operate and realize the spacing adjustment of the support platform 6.

[0081] Limiting groove 15: The limiting groove 15 is opened on the left side of the worktable 1. The limiting groove 15 is a convex groove. The fixing frame 2 extends from the left side of the limiting groove 15. The interior of the limiting groove 15 is used to slide the limiting block 16. The limiting groove 15 provides sliding space and guides the limiting block 16, restricting the sliding trajectory of the limiting block 16 and ensuring that the limiting block 16 can only slide left and right along the limiting groove 15, thereby guiding and limiting the movement of the first clamping block 18.

[0082] Limiting block 16: The limiting block 16 is a rectangular block. The limiting block 16 is slidably connected inside the limiting groove 15. The left side of the limiting block 16 is used to fix the connecting rod 17. The limiting block 16 transmits power and cooperates with the limiting groove 15 to achieve guiding and limiting. During the test, the first clamping block 18 drives the connecting rod 17 to move. The connecting rod 17 drives the limiting block 16 to slide inside the limiting groove 15. The limiting block 16 cooperates with the limiting groove 15 to prevent the first clamping block 18 from shifting and ensure the stability of the test process.

[0083] Connecting rod 17: Connecting rod 17 is fixedly connected to the left side of limiting block 16. The left side of connecting rod 17 extends into fixing bracket 2. The left side of connecting rod 17 is used to fix the first clamping block 18. Connecting rod 17 connects limiting block 16 and first clamping block 18, transmits the movement of first clamping block 18, and allows the movement of first clamping block 18 to drive limiting block 16 to slide inside limiting groove 15. At the same time, it provides installation support for first clamping block 18, ensuring that first clamping block 18 can be stably set in the groove of hydraulic block 4.

[0084] First clamping block 18: The first clamping block 18 is fixedly connected to the left side of the connecting rod 17. A second clamping block 19 is provided on the front side of the first clamping block 18. The first clamping block 18 is located in the groove of the hydraulic block 4. A clamping mechanism is provided on the first clamping block 18. An anti-detachment ring groove 29 is opened inside the first clamping block 18. A connecting ring groove 30 is opened on the front side of the first clamping block 18. The upper side of the outer surface of the first clamping block 18 is used to fix the first top block 33. The first clamping block 18 cooperates with the second clamping block 19 to clamp and fix the steel leaf spring. The clamping mechanism on the first clamping block 18 is responsible for clamping the upper and lower sides of the steel leaf spring, and at the same time provides an installation carrier for the rotating mechanism to realize the rotation adjustment of the second clamping block 19.

[0085] Second clamping block 19: The second clamping block 19 is located in front of the first clamping block 18 and in the groove of the hydraulic block 4. The second clamping block 19 is equipped with a clamping mechanism. The rear side of the second clamping block 19 is used to fix and connect the connecting block 31, and the front side of the second clamping block 19 is used to fix and connect the motor assembly 26. The right side of the outer surface of the second clamping block 19 is used to fix and connect the second top block 34. The second clamping block 19 works with the first clamping block 18 to clamp and fix the leaf spring. The clamping mechanism on the second clamping block 19 is responsible for clamping the left and right sides of the leaf spring. At the same time, the clamping angle can be adjusted by rotating the mechanism around the first clamping block 18 to adapt to the clamping requirements of the leaf spring.

[0086] Clamping plates 20: There are two clamping plates 20 for each clamping mechanism, for a total of four. The two clamping plates 20 are installed on the corresponding clamping blocks, the first clamping block 18 or the second clamping block 19. The two clamping plates 20 are fixedly connected to the two adjusting sliders 22 respectively. The clamping plates 20 are in direct contact with the leaf spring to achieve clamping and fixing of the leaf spring. When the two clamping plates 20 on the first clamping block 18 are close to each other, they clamp the upper and lower sides of the leaf spring. When the two clamping plates 20 on the second clamping block 19 are close to each other, they clamp the left and right sides of the leaf spring.

[0087] Adjustment groove 21: Adjustment groove 21 is formed on the right wall of the corresponding clamping block 18 or 2 clamping block 19. Adjustment groove 21 is a convex groove. The interior of adjustment groove 21 is used to install components such as adjustment slider 22, drive shaft 23, threaded rod 24, worm gear 25, and worm 27. Adjustment groove 21 provides installation and movement space for each component of the clamping mechanism, restricts the sliding trajectory of adjustment slider 22, and ensures that adjustment slider 22 can slide stably along adjustment groove 21, thereby driving clamping plate 20 to achieve clamping action.

[0088] Adjusting sliders 22: There are two adjusting sliders 22 for each clamping mechanism, for a total of four. The two adjusting sliders 22 are slidably connected inside the corresponding adjusting grooves 21. Both adjusting sliders 22 are convex blocks. The two adjusting sliders 22 are arranged symmetrically up and down. The left side of the two adjusting sliders 22 extends out of the adjusting grooves 21 and is fixedly connected to the two clamping plates 20. The adjusting sliders 22 transmit power and drive the clamping plates 20 to move. Under the drive of the threaded rod 24, the adjusting sliders 22 move towards or away from each other along the adjusting grooves 21, thereby driving the two clamping plates 20 to move closer or further away from each other, realizing the clamping or releasing action.

[0089] Drive shaft 23: There is one drive shaft 23 for each clamping mechanism, for a total of two. The drive shaft 23 is installed inside the corresponding adjustment groove 21. The drive shaft 23 is located between the two adjustment sliders 22. The upper and lower ends of the drive shaft 23 are used to fix and connect the two threaded rods 24 respectively. The outer surface of the drive shaft 23 is used to fix and sleeve the worm gear 25. The drive shaft 23 transmits power, and transmits the rotational power of the worm gear 25 to the two threaded rods 24, causing the two threaded rods 24 to rotate synchronously, thereby driving the adjustment slider 22 to move.

[0090] Threaded rods 24: There are two threaded rods 24 for each clamping mechanism, for a total of four. The two threaded rods 24 are fixedly connected to the upper and lower ends of the corresponding transmission shaft 23 respectively. The ends of the two threaded rods 24 that are far apart from each other pass through the two adjusting sliders 22 respectively. The ends of the two threaded rods 24 that are far apart from each other are rotatably connected to the top and bottom walls of the adjusting groove 21 respectively. The threads of the two threaded rods 24 have opposite directions of rotation. The threaded rods 24 convert the rotational motion of the transmission shaft 23 into the linear motion of the adjusting sliders 22. Since the threads of the two threaded rods 24 have opposite directions of rotation, when the transmission shaft 23 rotates, the two adjusting sliders 22 will move towards each other along the adjusting groove 21, causing the clamping plate 20 to clamp the steel leaf spring.

[0091] Worm Gear 25: There is one worm gear 25 for each clamping mechanism, for a total of two. The worm gear 25 is fixedly sleeved on the outer surface of the corresponding transmission shaft 23. The worm gear 25 is meshed with the worm 27. The worm gear 25 transmits power and changes the direction of motion, transmitting the rotational power of the worm 27 to the transmission shaft 23, causing the transmission shaft 23 to rotate, which in turn drives the threaded rod 24, the adjusting slider 22 and the clamping plate 20 to run, thereby realizing the clamping action.

[0092] Motor assembly 26: There is one motor assembly 26 for each clamping mechanism, for a total of two. The motor assembly 26 is fixedly connected to the front side of the corresponding clamping block 18 or 2 clamping block 19. The output shaft of the motor assembly 26 extends rotatably into the interior of the adjustment groove 21 and is fixedly connected to the worm gear 27. The motor assembly 26 provides power to the clamping mechanism. After the motor assembly 26 is started, the output shaft of the motor assembly 26 drives the worm gear 27 to rotate, thereby driving the entire clamping mechanism to operate and realize the clamping or loosening of the clamping plate 20.

[0093] Worm 27: There is one worm 27 for each clamping mechanism, for a total of two. The worm 27 is fixedly connected to the rear end of the output shaft of the corresponding motor assembly 26. The rear end of the worm 27 is rotatably connected to the rear wall of the adjusting groove 21. The worm 27 is meshed with the worm wheel 25. The worm 27 transmits power, transferring the rotational power of the output shaft of the motor assembly 26 to the worm wheel 25, driving the worm wheel 25 and the transmission shaft 23 to rotate, thus providing power for the clamping action.

[0094] Dustproof blocks 28: There are two dustproof blocks 28 for each clamping mechanism, for a total of four. The two dustproof blocks 28 are fixedly connected to the right wall of the corresponding clamping block 18 or 2 clamping block 19. The two dustproof blocks 28 are symmetrically arranged on the front and rear sides of the adjusting groove 21. The opposite sides of the two dustproof blocks 28 are bristles. The dustproof blocks 28 play a role in dust protection. The bristles of the two dustproof blocks 28 can cover the adjusting groove 21 to prevent external dust from entering the interior of the adjusting groove 21, avoid dust affecting the sliding and rotation of components such as the adjusting slider 22 and the threaded rod 24, and extend the service life of the components.

[0095] Anti-detachment ring groove 29: The anti-detachment ring groove 29 is formed inside the first clamping block 18. The anti-detachment ring groove 29 is an arc-shaped groove. The interior of the anti-detachment ring groove 29 is used for sliding connection of the anti-detachment block 32. The anti-detachment ring groove 29 is connected to the connecting ring groove 30. The anti-detachment ring groove 29 provides sliding space and anti-detachment limit for the anti-detachment block 32, restricts the movement trajectory of the anti-detachment block 32, and prevents the anti-detachment block 32 from falling out of the first clamping block 18, thereby preventing the second clamping block 19 from falling out and ensuring the stability of the rotating mechanism.

[0096] Connecting ring groove 30: The connecting ring groove 30 is formed on the front side of the first clamping block 18, and the rear side of the connecting ring groove 30 extends into the interior of the anti-detachment ring groove 29. The interior of the connecting ring groove 30 is used for the connecting block 31 to pass through. The connecting ring groove 30 provides movement space for the connecting block 31, allowing the connecting block 31 to drive the anti-detachment block 32 to slide inside the anti-detachment ring groove 29, thereby realizing the rotation of the second clamping block 19 around the first clamping block 18, while limiting the range of motion of the connecting block 31 to ensure smooth rotation.

[0097] Connecting block 31: Connecting block 31 is fixedly connected to the rear side of the second clamping block 19. The rear side of connecting block 31 extends through the connecting ring groove 30 into the interior of the anti-detachment ring groove 29. The rear side of connecting block 31 is used to fixally connect the anti-detachment block 32. Connecting block 31 connects the second clamping block 19 and the anti-detachment block 32, and transmits the rotational power of the second clamping block 19. When the user rotates the second clamping block 19, the second clamping block 19 drives the connecting block 31 to move. The connecting block 31 drives the anti-detachment block 32 to slide inside the anti-detachment ring groove 29, thereby realizing the rotational adjustment of the second clamping block 19.

[0098] Anti-detachment block 32: Anti-detachment block 32 is fixedly connected to the rear side of connecting block 31. Anti-detachment block 32 is slidably connected inside anti-detachment ring groove 29. Anti-detachment block 32 plays the role of preventing detachment and transmitting power. Anti-detachment block 32 cooperates with anti-detachment ring groove 29 to prevent connecting block 31 and second clamping block 19 from falling off the first clamping block 18. At the same time, it transmits the movement of connecting block 31, so that the second clamping block 19 can rotate stably around the first clamping block 18, ensuring the stability of the rotation action.

[0099] First top block 33: The first top block 33 is fixedly connected to the upper side of the outer surface of the first clamping block 18. The first top block 33 cooperates with the second top block 34 to limit the rotation angle of the second clamping block 19. When the second clamping block 19 rotates to a suitable angle, the second top block 34 will contact the first top block 33. The first top block 33 blocks the second top block 34 from continuing to move, thereby limiting the rotation angle of the second clamping block 19 and ensuring that the second clamping block 19 can be accurately aligned with the left and right sides of the leaf spring, thus ensuring clamping accuracy.

[0100] Second top block 34: The second top block 34 is fixedly connected to the right side of the outer surface of the second clamping block 19. The second top block 34, together with the first top block 33, restricts the rotation angle of the second clamping block 19. When the user rotates the second clamping block 19, the second clamping block 19 drives the second top block 34 to move. When the second top block 34 contacts the first top block 33, the second clamping block 19 stops rotating, thereby achieving precise limiting of the rotation angle of the second clamping block 19 and ensuring that the clamping mechanism can accurately clamp the leaf spring.

[0101] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A testing device for shock-absorbing springs of an automobile suspension system, comprising a workbench (1), two support platforms (6) are installed on the upper side of the workbench (1), both support platforms (6) are U-shaped blocks, and the two support platforms (6) are arranged symmetrically in front and behind; The left side of each of the two support tables (6) is provided with a positioning plug rod (7), the right end of each of the two positioning plug rods (7) penetrates through the corresponding support table (6), characterized in that: An adjustment mechanism is provided on the workbench (1); The adjustment mechanism includes a transmission groove (8), two connection ports (9), two moving blocks (10), a connecting shaft (11), a gear (12), two toothed plates (13) and an electric push rod (14). A limiting groove (15) is provided on the left side of the workbench (1). The limiting groove (15) is a convex groove and a fixing frame (2) extends from the left side. A limiting block (16) is slidably connected inside the limiting groove (15). The limiting block (16) is a rectangular block and is slidably connected inside the limiting groove (15). The connecting rod (17) is fixedly connected to the left side of the limiting block (16), and the left side of the connecting rod (17) extends out of the fixing frame (2). A first clamping block (18) is fixedly connected to the left side of the connecting rod (17), and a second clamping block (19) is provided on the front side of the first clamping block (18). Both the first clamping block (18) and the second clamping block (19) are located in the groove of the hydraulic block (4). Both the first clamping block (18) and the second clamping block (19) are equipped with clamping mechanisms; The clamping mechanism includes two clamping plates (20), an adjustment groove (21), two adjustment sliders (22), a drive shaft (23), two threaded rods (24), a worm gear (25), a motor assembly (26), a worm (27), and two dust blocks (28). The first clamping block (18) and the second clamping block (19) are provided with a rotating mechanism; The rotating mechanism includes an anti-detachment ring groove (29), a connecting ring groove (30), a connecting block (31), an anti-detachment block (32), a first top block (33), and a second top block (34).

2. The testing equipment for shock-absorbing springs in an automotive suspension system according to claim 1, characterized in that: A fixed frame (2) is fixedly connected to the upper side of the workbench (1), and a hydraulic press assembly (3) is fixedly connected to the upper side of the fixed frame (2). The hydraulic rod of the hydraulic press assembly (3) slides through the fixed frame (2), and a hydraulic block (4) is fixedly connected to the lower end of the hydraulic rod of the hydraulic press assembly (3). The hydraulic block (4) is an inverted U-shaped block. A pressure sensor is installed on the lower side of the hydraulic block (4), and a control panel (5) is fixedly connected to the front side of the workbench (1).

3. The testing equipment for shock-absorbing springs in an automotive suspension system according to claim 1, characterized in that: The transmission groove (8) is opened inside the workbench (1), and the two connection ports (9) are opened on the top wall of the transmission groove (8), with the upper side of the two connection ports (9) extending out of the workbench (1). The two connection ports (9) are arranged symmetrically front and back, and the two moving blocks (10) are slidably connected inside the transmission groove (8). Both moving blocks (10) are T-shaped blocks. The upper sides of the two movable blocks (10) extend out of the worktable (1) through the two connection ports (9) respectively. The upper sides of the two movable blocks (10) are fixedly connected to the two support platforms (6) respectively. The connecting shaft (11) is set inside the transmission groove (8).

4. The testing equipment for shock-absorbing springs in an automotive suspension system according to claim 3, characterized in that: The upper and lower ends of the connecting shaft (11) are rotatably connected to the top and bottom walls of the transmission groove (8), respectively, and the gear (12) is fixedly sleeved on the outer surface of the connecting shaft (11). Two toothed plates (13) are respectively set on the left and right sides of the gear (12). Both toothed plates (13) are meshed with the gear (12). The right toothed plate (13) is fixedly connected to the front moving block (10), and the left toothed plate (13) is fixedly connected to the rear moving block (10). The electric push rod (14) is fixedly connected to the front side of the workbench (1). The telescopic rod of the electric push rod (14) slides into the interior of the transmission groove (8). The telescopic rod of the electric push rod (14) is fixedly connected to the front moving block (10).

5. The testing equipment for shock-absorbing springs in an automotive suspension system according to claim 1, characterized in that: Both clamping plates (20) are mounted on the second clamping block (19), and the adjusting groove (21) is opened on the right wall of the second clamping block (19). The adjusting groove (21) is a convex groove. Both adjusting sliders (22) are slidably connected inside the adjusting groove (21). Both adjusting sliders (22) are convex blocks and are arranged symmetrically up and down. The left side of the two adjusting sliders (22) extends into the adjusting groove (21), and the left side of the two adjusting sliders (22) is fixedly connected to the two clamping plates (20) respectively. The drive shaft (23) is installed inside the adjusting groove (21).

6. The testing equipment for shock-absorbing springs in an automotive suspension system according to claim 5, characterized in that: The drive shaft (23) is positioned between two adjusting sliders (22), and two threaded rods (24) are fixedly connected to the upper and lower ends of the drive shaft (23), respectively. The ends of the two threaded rods (24) that are far apart from each other are threaded through the two adjusting sliders (22), and the ends of the two threaded rods (24) that are far apart from each other are rotatably connected to the top wall and bottom wall of the adjusting groove (21); The two threaded rods (24) have opposite thread directions, the worm gear (25) is fixedly sleeved on the outer surface of the drive shaft (23), and the motor assembly (26) is fixedly connected to the front side of the second clamp (19).

7. The testing equipment for shock-absorbing springs in an automotive suspension system according to claim 6, characterized in that: The output shaft of the motor assembly (26) extends rotatably into the interior of the adjustment groove (21), and the worm gear (27) is fixedly connected to the rear end of the output shaft of the motor assembly (26); The rear end of the worm (27) is rotatably connected to the rear wall of the adjusting groove (21), and the worm (27) is meshed with the worm wheel (25). Both dust blocks (28) are fixedly connected to the right wall of the second clamping block (19). Two dustproof blocks (28) are symmetrically arranged on the front and rear sides of the adjustment groove (21), and the opposite sides of the two dustproof blocks (28) are brush bristles.

8. The testing equipment for shock-absorbing springs in an automotive suspension system according to claim 1, characterized in that: The anti-detachment ring groove (29) is opened inside the first clamping block (18), and the anti-detachment ring groove (29) is an arc-shaped groove. The connecting ring groove (30) is opened on the front side of the first clamping block (18). The rear side of the connecting ring groove (30) extends into the interior of the anti-detachment ring groove (29), and the connecting block (31) is fixedly connected to the rear side of the second clamping block (19). The rear side of the connecting block (31) extends through the connecting ring groove (30) into the interior of the anti-detachment ring groove (29).

9. The testing equipment for shock-absorbing springs in an automotive suspension system according to claim 1, characterized in that: The anti-detachment block (32) is fixedly connected to the rear side of the connecting block (31), and the anti-detachment block (32) is slidably connected inside the anti-detachment ring groove (29); The first top block (33) is fixedly connected to the upper side of the outer surface of the first clamping block (18), and the second top block (34) is fixedly connected to the right side of the outer surface of the second clamping block (19).

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