A tire dynamic stiffness measuring device

Abstract

The present invention provides a tire dynamic stiffness measuring device, which relates to the field of tire testing technology, including a base, a fixed component fixedly connected to the upper surface of the base, the fixed component is used to install the tire, a driving component is arranged in the fixed component, the driving component is used to drive the tire to rotate, an adjustment component is arranged on the upper surface of the base, an excitation component is fixedly connected to the upper surface of the adjustment component, and a loading plate is fixedly connected to the output end of the excitation component. The tire dynamic stiffness measuring device is also provided with a control component, and the control component is electrically connected to the excitation component. The excitation component is controlled by a controller to realize dynamic excitation, and the tire is driven to rotate by the fixed component, so as to realize the detection of the stiffness of the simulated tire under dynamic excitation generated by the ground after rolling. By adopting a high-rigidity structure, it is ensured that the natural frequency of the test device will not interfere with the test result, and the accuracy of the test result is improved. By adopting a replaceable detection tooling, it is suitable for tire and suspension composite testing of different models.

Description

Technical Field

[0001] The invention relates to the technical field of tire testing, and in particular to a tire dynamic stiffness measuring device. Background Art

[0002] As one of the important parts of a car, automobile tires have a vital impact on the ride comfort of the car. At present, the rapid development of the electric vehicle industry has eliminated the noise of the engine, so the vibration noise generated by the tires has attracted more and more attention. Manufacturing a tire with good comfort has become a research direction that tire manufacturers pay close attention to. The stiffness performance of the tire directly affects the comfort of the vehicle, so studying the stiffness performance of the tire is of great significance to improving the ride comfort of the vehicle.

[0003] Tire stiffness test is the mainstream method for measuring tire stiffness performance. This method fixes the tire wheel core position, simulates the tire grounding state by moving the rigid plane, and moves the platform in the radial, lateral and tangential directions respectively. The radial, lateral and tangential forces generated by the tire and the platform displacement in the corresponding directions are measured, and finally the ratio between force and displacement is used as the stiffness in the corresponding direction.

[0004] Existing tire stiffness testing devices mainly measure the static stiffness of tires, and are unable to evaluate the stiffness of tires under dynamic excitation generated by the ground after rolling. Summary of the invention

[0005] The invention provides a tire dynamic stiffness measuring device, which is used to solve the defect that the existing tire stiffness testing device in the prior art mainly measures the static stiffness of the tire and cannot evaluate the stiffness of the tire under dynamic excitation generated by the ground after rolling.

[0006] On the one hand, the present invention provides a tire dynamic stiffness measuring device, including a base, a fixing component fixedly connected to the upper surface of the base, the fixing component is used to install the tire, a driving component is arranged in the fixing component, the driving component is used to drive the tire to rotate, an adjustment component is arranged on the upper surface of the base, a vibration component is fixedly connected to the upper surface of the adjustment component, a loading plate is fixedly connected to the output end of the vibration component, and the tire dynamic stiffness measuring device is also provided with a control component, and the control component is electrically connected to the vibration component.

[0007] Preferably, the fixing assembly includes a mounting seat, which is fixedly connected to the upper surface of the base, a rotating disk is rotatably connected inside the mounting seat, the driving assembly is arranged inside the mounting seat, the output end of the driving assembly is fixedly connected to the rotating disk, a center rod is fixedly connected to the upper surface of the rotating disk, and a detection tooling is installed on the rotating disk.

[0008] Preferably, the adjustment component includes a mounting groove, which is arranged on the upper surface of the base. A threaded rod 1 is rotatably arranged in the mounting groove and arranged along the left and right directions. The threaded rod 1 is threadedly connected to a mounting platform. The threaded rod 1 is fixedly connected to the output end of a motor 1, and the motor 1 is installed inside the base. A plurality of threaded holes 1 are symmetrically arranged on the left and right side walls of the mounting groove. A stabilizing rod is threadedly connected to the inner thread of the threaded hole 1, and the other end of the stabilizing rod is in contact with the mounting platform.

[0009] Preferably, the excitation assembly includes a protection box, which is fixedly connected to the upper surface of the mounting table, an exciter 1 is fixedly connected to the inner bottom surface of the protection box, the output end of the exciter 1 moves in the up and down direction, the output end of the exciter 1 is fixedly connected to a mounting plate 1, an exciter 2 and a slide rail are fixedly connected to the upper surface of the mounting plate 1, a sliding block is slidably connected in the slide rail in the front-to-back direction, a mounting plate 2 is fixedly connected to the upper surface of the sliding block, the output end of the exciter 2 moves in the front-to-back direction, the output end of the exciter 2 is fixedly connected to the mounting plate 2, an exciter 3 is fixedly connected to the upper surface of the mounting plate 2, the output end of the exciter 3 moves in the left-to-right direction, and a loading plate is fixedly connected to the output end of the exciter 3.

[0010] Preferably, the control component includes: a controller, an acceleration sensor and several force sensors. The controller is arranged inside the base, and the controller is electrically connected to the excitation component, the acceleration sensor and the force sensor. The controller is used to output a dynamic excitation signal to the excitation component and to collect data from the acceleration sensor and the force sensor; the acceleration sensor is arranged on the fixed component to detect the acceleration of the tire; the force sensor is arranged on the loading plate to detect the force condition of the tire.

[0011] Preferably, the driving component is motor 2, and the rotating disk includes an upper turntable and a lower turntable, the lower turntable is fixedly connected to the output end of motor 2, motor 3 is installed on the upper surface of the lower turntable, the output end of motor 3 is fixedly connected to vertically arranged threaded rod 2, two vertically arranged positioning rods are fixedly connected symmetrically on the upper surface of the lower turntable, threaded hole 2 and two positioning holes are arranged on the lower surface of the upper turntable, threaded rod 2 is threadedly connected in threaded hole 2, and the two positioning rods are respectively slidably connected in the two positioning holes along the up and down directions.

[0012] Preferably, two groups of locking assemblies corresponding to the positioning holes are provided in the upper turntable, and the inner wall of the detection tooling is provided with two locking holes corresponding to the locking assemblies, the locking assembly includes a receiving groove arranged along the left and right directions, the receiving groove is arranged on the outer wall of the upper turntable, a limiting groove along the left and right directions is provided in the containing groove, a mounting rod arranged along the left and right directions is fixedly connected in the limiting groove, a locking cylinder is slidably connected to the lower side wall of the locking cylinder along the left and right directions, a limiting slider is fixedly connected to the limiting slider and the mounting rod is slidably connected to the mounting rod along the left and right directions, a spring is fixedly connected between the limiting slider and the inner wall of the limiting groove, a locking block is slidably connected to the locking cylinder along the left and right directions, a spring second is fixedly connected between the locking block and the inner wall of the locking cylinder, an inclined surface one and an inclined surface two are respectively provided on the upper and lower sides of one end of the locking block near the locking hole, a trigger cavity is provided in the upper turntable, a trigger assembly is provided in the trigger cavity, the trigger assembly is used to control the position of the locking hole in the locking hole, the trigger cavity is connected with the receiving groove through the connecting groove one, and the trigger cavity is connected with the positioning hole through the connecting groove two.

[0013] Preferably, a control rod is fixedly connected to the upper side wall of the locking cylinder, and the control rod extends from connecting groove 1. The trigger assembly includes a support plate, which is fixedly connected to the side wall of the positioning rod, and the support plate extends into the trigger cavity through connecting groove 2. A trigger block is fixedly connected to the lower surface of the support plate, and a slope 3 is provided at the lower end of the trigger block, and slope 3 is in contact with the upper end of the control rod.

[0014] Preferably, the side wall of the locking cylinder is provided with a connecting groove three, the upper side wall of the locking block is fixedly connected to a limiting plate, the limiting plate extends into the trigger cavity after passing through the connecting groove one and the connecting groove three, the limiting plate is L-shaped, a limiting hole is provided on the limiting plate, the lower surface of the trigger block is fixedly connected to a limiting pin, and the limiting pin is located above the limiting hole.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The controller controls the excitation component to achieve dynamic excitation, and the fixed component drives the tire to rotate, thereby simulating the stiffness detection of the tire under dynamic excitation generated by the ground after rolling. The excitation is applied by contacting the loading plate with the tire, simulating the wide-band excitation received by the tire, and realizing stiffness detection at different positions of the tire, thereby improving the comprehensiveness of the stiffness detection. By adopting a high-rigidity structure, it is ensured that the natural frequency of the test device will not interfere with the test results, thereby improving the accuracy of the test results. By adopting replaceable test fixtures, it is suitable for composite tests of tires and suspensions of different models. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0019] Figure 2 is a schematic diagram of the structure of the adjustment assembly of the present invention viewed from above;

[0020] Figure 3 It is a left-side structural schematic diagram of the excitation assembly of the present invention;

[0021] Figure 4 It is a schematic diagram of the main structure of the fixing assembly of the present invention;

[0022] Figure 5 yes Figure 4 A magnified view of the structure in the middle.

[0023] Reference numerals:

[0024] 1. Base; 2. Fixing assembly; 3. Adjusting assembly; 4. Excitation assembly; 5. Loading plate; 6. Mounting seat; 7. Rotating plate; 8. Center rod; 9. Inspection tooling; 10. Mounting slot; 11. Threaded rod 1; 12. Mounting table; 13. Motor 1; 14. Threaded hole 1; 15. Stabilizing rod; 16. Protective box; 17. Exciter 1; 18. Mounting plate 1; 19. Exciter 2; 20. Slide rail; 21. Sliding block; 22. Mounting plate 2; 23. Exciter 3; 24. Motor 2; 25. Upper turntable; 26. Lower turntable; 27. Motor 3 ; 28. Threaded rod two; 29. ​​Positioning rod; 30. Threaded hole two; 31. Positioning hole; 32. Locking hole; 33. Accommodating groove; 34. Limiting groove; 35. Mounting rod; 36. Locking cylinder; 37. Limiting slider; 38. Spring one; 39. Locking block; 40. Spring two; 41. Inclined surface one; 42. Inclined surface two; 43. Trigger chamber; 44. Connecting groove one; 45. Connecting groove two; 46. Control rod; 47. Support plate; 48. Trigger block; 49. Inclined surface three; 50. Connecting groove three; 51. Limiting plate; 52. Limiting hole; 53. Limiting pin. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0027] Example 1

[0028] An embodiment of the present invention provides a tire dynamic stiffness measuring device, including a base 1, a fixing component 2 is fixedly connected to the upper surface of the base 1, the fixing component 2 is used to install the tire, a driving component is arranged in the fixing component 2, the driving component is used to drive the tire to rotate, an adjustment component 3 is arranged on the upper surface of the base 1, a vibration component 4 is fixedly connected to the upper surface of the adjustment component 3, a loading plate 5 is fixedly connected to the output end of the vibration component 4, and the tire dynamic stiffness measuring device is also provided with a control component, and the control component is electrically connected to the vibration component 4.

[0029] Preferably, the fixing component 2 includes a mounting seat 6, which is fixedly connected to the upper surface of the base 1, and a rotating disk 7 is rotatably connected inside the mounting seat 6. The driving component is arranged inside the mounting seat 6, and the output end of the driving component is fixedly connected to the rotating disk 7. A center rod 8 is fixedly connected to the upper surface of the rotating disk 7, and a detection tooling 9 is installed on the rotating disk 7.

[0030] Preferably, the adjustment component 3 includes a mounting groove 10, which is arranged on the upper surface of the base 1, and a threaded rod 11 arranged along the left and right directions is rotatably arranged in the mounting groove 10, and a mounting platform 12 is threadedly connected to the threaded rod 11, and the threaded rod 11 is fixedly connected to the output end of a motor 13, and the motor 13 is installed inside the base 1. A plurality of threaded holes 14 are symmetrically arranged on the left and right side walls of the mounting groove 10, and a stabilizing rod 15 is threadedly connected to the threaded hole 14, and the other end of the stabilizing rod 15 is in contact with the mounting platform 12.

[0031] Preferably, the excitation component 4 includes a protection box 16, which is fixedly connected to the upper surface of the mounting platform 12, and an exciter 17 is fixedly connected to the inner bottom surface of the protection box 16. The output end of the exciter 17 moves in the up and down direction, and the output end of the exciter 17 is fixedly connected to a mounting plate 18, and an exciter 2 19 and a slide rail 20 are fixedly connected to the upper surface of the mounting plate 18. A sliding block 21 is slidably connected in the slide rail 20 in the front-to-back direction, and a mounting plate 22 is fixedly connected to the upper surface of the sliding block 21. The output end of the exciter 2 19 moves in the front-to-back direction, and the output end of the exciter 2 19 is fixedly connected to the mounting plate 22, and an exciter 3 23 is fixedly connected to the upper surface of the mounting plate 22. The output end of the exciter 3 23 moves in the left and right direction, and the loading disk 5 is fixedly connected to the output end of the exciter 3 23.

[0032] Preferably, the control component includes: a controller, an acceleration sensor and several force sensors. The controller is arranged inside the base 1. The controller is electrically connected to the excitation component 4, the acceleration sensor and the force sensor. The controller is used to output a dynamic excitation signal to the excitation component 4 and to collect data from the acceleration sensor and the force sensor; the acceleration sensor is arranged on the fixed component 2 to detect the acceleration of the tire; the force sensor is arranged on the loading plate 5 to detect the force condition of the tire.

[0033] In this embodiment, the force conditions of the tire include: radial force, tangential force and lateral force exerted on the tire.

[0034] In this embodiment, the dynamic excitation frequency range is 0-500 Hz.

[0035] In this embodiment, the controller also has a data analysis function, and the data analysis function includes: fast Fourier analysis, data fitting, digital filtering, signal windowing, and signal smoothing.

[0036] The beneficial effects of the above technical solution are:

[0037] When testing the stiffness of a tire, first inflate the tire to a specific air pressure, then fix the testing fixture 9 to the upper surface of the rotating disk 7 by bolts, then fix the tire to the testing fixture 9 by bolts, make vertical contact with the tire through the loading disk 5, and apply a specific load to simulate the grounding state of the tire, apply dynamic excitation forces in radial, tangential and lateral directions through the excitation component 4, collect acceleration signals and radial, tangential and lateral forces during the excitation process, and perform tire stiffness analysis.

[0038] When testing tires of different models, first screw the stabilizer bar 15 into the threaded hole 14, and then drive the threaded rod 11 to rotate through the motor 13, so as to adjust the distance between the exciting component 4 and the fixing component 2, so as to adapt to the sizes of different tires. After the position adjustment is completed, screw the stabilizer bar 15 to adjust the length of the stabilizer bar 15 extending from the threaded hole 14, so that multiple stabilizer bars 15 cooperate to clamp the mounting platform 12, reduce the vibration of the mounting platform 12 during the excitation process, and ensure that the natural frequency of the test device will not interfere with the test results. At the same time, by replacing the detection tooling 9, the device can be applied to the stiffness detection of various types of tires. When the detection tooling 9 is replaced with the vehicle 1 / 4 suspension, the dynamic stiffness performance measurement of the tire to the suspension can be realized, which further improves the detection range of the device.

[0039] The controller controls the excitation component 4 to realize dynamic excitation, and realizes the stiffness detection of the simulated tire under the dynamic excitation generated by the ground after rolling. The loading plate 5 contacts the tire to apply excitation, and simulates the wide-band excitation received by the tire, so as to realize the stiffness detection of different positions of the tire and improve the comprehensiveness of the stiffness detection. By adopting a high-rigidity structure, it is ensured that the natural frequency of the test device will not interfere with the test result, and the accuracy of the test result is improved. By adopting a replaceable test fixture 9, it is suitable for the composite test of tires and suspensions of different models.

[0040] Example 2

[0041] On the basis of Example 1, the driving component is motor 24, and the rotating disk 7 includes an upper turntable 25 and a lower turntable 26. The lower turntable 26 is fixedly connected to the output end of motor 24. Motor 3 27 is installed on the upper surface of the lower turntable 26. The output end of motor 3 27 is fixedly connected to a vertically arranged threaded rod 28. Two vertically arranged positioning rods 29 are fixedly connected symmetrically on the upper surface of the lower turntable 26. A threaded hole 20 and two positioning holes 31 are arranged on the lower surface of the upper turntable 25. The threaded rod 28 is threadedly connected in the threaded hole 20, and the two positioning rods 29 are respectively slidably connected in the two positioning holes 31 along the up and down directions.

[0042] The beneficial effects of the above technical solution are:

[0043] When the tire is being installed, the upper turntable 25 is in a low position, which is convenient for installing the tire. After the tire is installed, the motor 3 27 drives the threaded rod 28 to rotate, so that the upper turntable 25 moves upward to detect the stiffness of the tire. By adjusting the height of the upper turntable 25, the difficulty of installing the tire and the detection tooling 9 is reduced, and the installation of the tire and the detection tooling 9 is facilitated. The cooperation of the positioning rod 29 and the positioning hole 31 ensures the synchronous rotation of the upper turntable 25 and the lower turntable 26, thereby ensuring the precise control of the tire rotation speed.

[0044] Example 3

[0045] On the basis of Example 2, two groups of locking components corresponding to the positioning holes 31 are provided in the upper turntable 25, and two locking holes 32 corresponding to the locking components are provided on the inner wall of the detection tooling 9. The locking component includes a receiving groove 33 arranged along the left and right directions, and the receiving groove 33 is arranged on the outer wall of the upper turntable 25. A limiting groove 34 along the left and right directions is provided in the receiving groove 33, and a mounting rod 35 arranged along the left and right directions is fixedly connected in the limiting groove 34. A locking cylinder 36 is slidably connected in the receiving groove 33 along the left and right directions, and a limiting slider 37 is fixedly connected to the lower side wall of the locking cylinder 36, and the limiting slider 37 is slidably connected to the mounting rod 35 along the left and right directions. On the upper part of the rotary disk 25, a spring 38 is fixedly connected between the limit slider 37 and the inner wall of the limit groove 34, a locking block 39 is slidably connected in the locking cylinder 36 along the left and right directions, a spring 2 40 is fixedly connected between the locking block 39 and the inner wall of the locking cylinder 36, and an inclined surface 1 41 and an inclined surface 2 42 are respectively provided on the upper and lower sides of one end of the locking block 39 close to the locking hole 32, a trigger cavity 43 is provided in the upper turntable 25, and a trigger assembly is provided in the trigger cavity 43, and the trigger assembly is used to control the position of the locking hole 32 in the locking hole 32, the trigger cavity 43 is connected with the accommodating groove 33 through the connecting groove 1 44, and the trigger cavity 43 is connected with the positioning hole 31 through the connecting groove 2 45.

[0046] Preferably, a control rod 46 is fixedly connected to the upper side wall of the locking cylinder 36, and the control rod 46 extends from the connecting groove 1 44. The trigger assembly includes a support plate 47, and the support plate 47 is fixedly connected to the side wall of the positioning rod 29. The support plate 47 extends into the trigger cavity 43 through the connecting groove 2 45. A trigger block 48 is fixedly connected to the lower surface of the support plate 47. The lower end of the trigger block 48 is provided with a bevel 3 49, and the bevel 3 49 is in contact with the upper end of the control rod 46.

[0047] Preferably, a connecting groove three 50 is provided on the side wall of the locking cylinder 36, and a limiting plate 51 is fixedly connected to the upper side wall of the locking block 39. The limiting plate 51 extends into the trigger cavity 43 after passing through the connecting groove one 44 and the connecting groove three 50. The limiting plate 51 is L-shaped, and a limiting hole 52 is provided on the limiting plate 51. A limiting pin 53 is fixedly connected to the lower surface of the trigger block 48, and the limiting pin 53 is located above the limiting hole 52.

[0048] In this embodiment, as the inclined plane 49 descends, the control rod 46 moves in a direction away from the upper turntable 25 .

[0049] The beneficial effects of the above technical solution are:

[0050] When the upper turntable 25 is in the low position, the locking cylinder 36 is in a retracted state under the action of the spring 1 38, and the locking block 39 is in a state of slightly protruding from the upper turntable 25. When the detection tooling 9 is installed, as the detection tooling 9 is installed, the detection tooling 9 contacts the inclined surface 1 41, so that the locking block 39 compresses the spring 2 40 and shrinks into the locking cylinder 36, thereby ensuring the smooth placement of the detection tooling 9. When the detection tooling 9 is in place, under the action of the spring 2 40, the locking block 39 is inserted into the locking hole 32, thereby producing a slight sound, thereby reminding the staff that the detection tooling 9 is in place, and limiting the detection tooling 9, which is convenient for fixing the detection tooling 9 and ensuring the stable fixation of the detection tooling 9. When the detection tooling 9 needs to be disassembled, the locking hole 32 is contacted with the inclined surface 2 42 to shrink the locking block 39 into the locking cylinder 36, thereby ensuring the smooth disassembly of the detection tooling 9.

[0051] When the upper turntable 25 rises, as the upper turntable 25 rises, the positioning rod 29 moves downward relative to the upper turntable 25, so that the trigger block 48 descends relative to the upper turntable 25, thereby squeezing the control rod 46 through the inclined surface three 49, causing the control rod 46 to move away from the upper turntable 25, thereby driving the locking cylinder 36 to move away from the upper turntable 25, so that the locking block 39 is completely inserted into the locking hole 32, further ensuring the stable installation of the detection tooling 9 during the stiffness detection process.

[0052] When the upper turntable 25 rises to the high position, the limit pin 53 is inserted into the limit hole 52, which prevents the locking block 39 from vibrating during the stiffness test, further ensures the stable insertion of the locking block 39 in the locking hole 32, and avoids the influence of the vibration of the locking block 39 on the test result.

[0053] When the detection is completed, as the upper turntable 25 descends, the limit pin 53 is first pulled out from the limit hole 52, and then under the action of the spring 1 38, the locking cylinder 36, which loses the squeezing effect of the inclined surface 3 49, returns to the initial position, thereby making the locking block 39 return to the initial position, facilitating the replacement of the detection tooling 9.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A tire dynamic stiffness measuring device, characterized in that: The device comprises a base (1), wherein a fixing assembly (2) is fixedly connected to the upper surface of the base (1), the fixing assembly (2) is used to mount a tire, a driving assembly is arranged inside the fixing assembly (2), the driving assembly is used to drive the tire to rotate, an adjusting assembly (3) is arranged on the upper surface of the base (1), a vibration assembly (4) is fixedly connected to the upper surface of the adjusting assembly (3), a loading plate (5) is fixedly connected to the output end of the vibration assembly (4), and the tire dynamic stiffness measuring device is further provided with a control assembly, which is electrically connected to the vibration assembly (4); The fixing assembly (2) comprises a mounting seat (6), the mounting seat (6) being fixedly connected to the upper surface of the base (1), a rotating disk (7) being rotatably connected inside the mounting seat (6), a driving assembly being arranged inside the mounting seat (6), an output end of the driving assembly being fixedly connected to the rotating disk (7), a center rod (8) being fixedly connected to the upper surface of the rotating disk (7), and a detection tooling (9) being installed on the rotating disk (7); The driving assembly is a second motor (24), and the rotating disk (7) includes an upper rotating disk (25) and a lower rotating disk (26). The lower rotating disk (26) is fixedly connected to the output end of the second motor (24). A third motor (27) is installed on the upper surface of the lower rotating disk (26). The output end of the third motor (27) is fixedly connected to a second vertically arranged threaded rod (28). Two vertically arranged positioning rods (29) are fixedly connected to the upper surface of the lower rotating disk (26) in a symmetrical manner. A second threaded hole (30) and two positioning holes (31) are arranged on the lower surface of the upper rotating disk (25). The second threaded rod (28) is threadedly connected in the second threaded hole (30). The two positioning rods (29) are respectively slidably connected in the two positioning holes (31) along the up and down directions. Two groups of locking components corresponding to the positioning holes (31) are arranged in the upper turntable (25); two locking holes (32) corresponding to the locking components are arranged on the inner wall of the detection tool (9); the locking component comprises a receiving groove (33) arranged along the left and right directions; the receiving groove (33) is arranged on the outer wall of the upper turntable (25); a limiting groove (34) along the left and right directions is arranged in the receiving groove (33); a mounting rod (35) arranged along the left and right directions is fixedly connected in the limiting groove (34); a locking cylinder (36) is slidably connected in the left and right directions in the receiving groove (33); a limiting slider (37) is fixedly connected to the lower side wall of the locking cylinder (36); the limiting slider (37) is slidably connected to the mounting rod (35) along the left and right directions; the limiting slider (37) is slidably connected to the mounting rod (35) along the left and right directions; ) and the inner wall of the limiting groove (34) are fixedly connected with a spring 1 (38); a locking block (39) is slidably connected in the locking cylinder (36) along the left-right direction; a spring 2 (40) is fixedly connected between the locking block (39) and the inner wall of the locking cylinder (36); an inclined surface 1 (41) and an inclined surface 2 (42) are respectively arranged on the upper and lower sides of one end of the locking block (39) close to the locking hole (32); a trigger cavity (43) is arranged in the upper rotating disk (25); a trigger assembly is arranged in the trigger cavity (43); the trigger assembly is used to control the position of the locking hole (32) in the locking hole (32); the trigger cavity (43) is connected to the accommodating groove (33) through the connecting groove 1 (44); and the trigger cavity (43) is connected to the positioning hole (31) through the connecting groove 2 (45).

2. A tire dynamic stiffness measuring device according to claim 1, characterized in that: The adjustment component (3) comprises a mounting groove (10), the mounting groove (10) being arranged on the upper surface of the base (1), a threaded rod (11) being rotatably arranged in the mounting groove (10) and arranged in the left-right direction, a mounting platform (12) being threadedly connected to the threaded rod (11), the threaded rod (11) being fixedly connected to the output end of a motor (13), the motor (13) being installed inside the base (1), a plurality of threaded holes (14) being symmetrically arranged on the left and right side walls of the mounting groove (10), a stabilizing rod (15) being threadedly connected to the inner surface of the threaded hole (14), and the other end of the stabilizing rod (15) being in contact with the mounting platform (12).

3. A tire dynamic stiffness measuring device according to claim 2, characterized in that: The excitation assembly (4) includes a protection box (16), the protection box (16) is fixedly connected to the upper surface of the mounting platform (12), the inner bottom surface of the protection box (16) is fixedly connected to an exciter 1 (17), the output end of the exciter 1 (17) moves in the up-down direction, the output end of the exciter 1 (17) is fixedly connected to a mounting plate 1 (18), the upper surface of the mounting plate 1 (18) is fixedly connected to an exciter 2 (19) and a slide rail (20), and the slide rail (20) slides in the front-back direction. A sliding block (21) is movably connected, a mounting plate 2 (22) is fixedly connected to the upper surface of the sliding block (21), the output end of the second vibrator (19) moves in the front-rear direction, the output end of the second vibrator (19) is fixedly connected to the mounting plate 2 (22), the upper surface of the mounting plate 2 (22) is fixedly connected to the third vibrator (23), the output end of the third vibrator (23) moves in the left-right direction, and the loading disk (5) is fixedly connected to the output end of the third vibrator (23).

4. A tire dynamic stiffness measuring device according to claim 1, characterized in that: The control component comprises: a controller, an acceleration sensor and a plurality of force sensors. The controller is arranged inside a base (1). The controller is electrically connected to a vibration component (4), the acceleration sensor and the force sensor. The controller is used to output a dynamic excitation signal to the vibration component (4) and to collect data from the acceleration sensor and the force sensor. The acceleration sensor is arranged on a fixed component (2) and is used to detect the acceleration of the tire. The force sensor is arranged on a loading plate (5) and is used to detect the force condition of the tire.

5. A tire dynamic stiffness measuring device according to claim 1, characterized in that: The side wall of the locking cylinder (36) is provided with a connecting groove three (50), the upper side wall of the locking block (39) is fixedly connected to a limiting plate (51), the limiting plate (51) passes through the connecting groove one (44) and the connecting groove three (50) and then extends into the trigger cavity (43), the limiting plate (51) is L-shaped, a limiting hole (52) is provided on the limiting plate (51), and the lower surface of the trigger block (48) is fixedly connected to a limiting pin (53), and the limiting pin (53) is located above the limiting hole (52).

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