Puncture device for testing sealing performance of coating type tire

Abstract

The invention discloses a coating type puncture device for tire sealing performance testing, and relates to the technical field of tire testing, the coating type puncture device comprises a base, one side of the base is fixedly connected with a vertical plate, the upper surface of the base is fixedly provided with a mounting block, and the interior of the mounting block is rotatably connected with a driving shaft; one end of the driving shaft extends to the outer side of the mounting block and is fixedly connected with the output end of the driving motor, the other end of the driving shaft is provided with a test tire, the test tire is connected with the driving shaft through a locking piece, the test device further comprises a rotating mechanism and a moving mechanism, the rotating mechanism is arranged on the side, close to the vertical plate, of the test tire, and the moving mechanism is arranged on the vertical plate. And the moving mechanism is arranged above the test tire. The device can automatically puncture and pull out a nail, can accurately control the puncture position, depth and angle, and highly simulates the condition that a tire is punctured by a sharp object in actual driving, so that the test result is more suitable for a real scene, manual participation steps are reduced, and the test safety is enhanced.

Description

Technical Field

[0001] The invention relates to the technical field of tire testing, in particular to a puncturing device for testing the sealing performance of a coated tire. Background Art

[0002] With the widespread application of nanotechnology in the field of synthetic materials and its breakthrough progress in the field of mechanical electronics, a new generation of self-repairing tire safety technology has emerged. The principle of this technology is to coat a layer of nano-intelligent material on the inner wall of the tire to form a "puncture-resistant and leak-proof safety protection layer", thereby solving the problem of tire blowouts caused by punctures and air leakage. When the puncture object pierces the tire body from the outside, the nano-intelligent coating material will tightly wrap the puncture object to prevent gas from overflowing. When the puncture object is pulled out of the tire body, the nano-intelligent coating material will automatically gather at the puncture to prevent gas leakage.

[0003] The safety performance of coated puncture-type self-sealing tires is closely related to the personal safety of consumers. Therefore, their sealing performance is often tested during the tire processing process. The existing technology is that the tester manually uses a hammer to pierce 6 nails into the tire one by one along the tire axis at the positions specified by the standard, and is required to pull out all the inserted nails within 3 minutes. The positions of the 6 nails are evenly distributed along the tire axis. It is necessary to use a hammer to hammer the nails into the tire while rotating the tire angle during the nailing process. However, the above-mentioned test method uses a manual hammering method. Due to the large elasticity of the tire, improper hand-fixing of the nails can easily cause the nails to fly out and easily injure the hands, posing a major safety hazard to the personal safety of the tester. In addition, this method requires manual confirmation of the angle and position of the test point, and requires the use of special tooling or calculating the distance on the tire in advance. The process is relatively cumbersome. In addition, the tester is required to complete the nail removal work within 3 minutes during the test process, which requires high manual operation skills of the tester, has the risk of timeout, and reduces production efficiency.

[0004] Based on this, a puncture device for testing the sealing performance of coated tires is now provided, which can eliminate the disadvantages of the existing technical solutions. Summary of the Invention

[0005] The purpose of the present invention is to provide a puncture device for testing the sealing performance of coated tires, so as to solve the problems in the background technology that the existing testing methods have safety hazards, the angle and position of the test points need to be manually confirmed, resulting in a cumbersome process, and the risk of timeout in the nail removal work.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A puncture device for testing the sealing performance of coated tires, comprising a base, a vertical plate fixedly connected to one side of the base, a mounting block fixedly mounted on the upper surface of the base, a drive shaft rotatably connected to the interior of the mounting block, one end of the drive shaft extending to the outside of the mounting block and fixedly connected to the output end of a drive motor, the drive motor fixedly connected to the base via a motor bracket, a test tire mounted on the other end of the drive shaft, and the test tire connected to the drive shaft via a locking member;

[0008] The apparatus further comprises a rotating mechanism and a moving mechanism. The rotating mechanism is provided on a side of the test tire close to the riser and is used to place the nails and automatically rotate the nails to a corresponding angle in coordination with the test tire. The moving mechanism is provided above the test tire and is used to cooperate with the nails for piercing and removing the nails.

[0009] The locking member includes an adapter, which is fixedly mounted on the drive shaft via a plurality of fixing bolts. A plurality of screw holes are provided on the surfaces of the adapter and the test tire, and the test tire is connected to the adapter via a plurality of studs.

[0010] Preferably, the rotating mechanism includes a turntable arranged above the mounting block, a plurality of rotating rods are evenly distributed on the outer wall of the turntable, and the ends of the rotating rods are provided with placement grooves for placing nails, the bottom of the turntable is fixedly connected to a rotating shaft, the rotating shaft is rotatably connected to the mounting block, a first bevel gear is fixedly installed on the outer side of the rotating shaft, a second bevel gear is meshed with one side of the first bevel gear, one end of the gear shaft of the second bevel gear is fixedly connected to the first synchronous pulley, a second synchronous pulley is fixedly provided on the driving shaft, the first synchronous pulley and the second synchronous pulley are connected by a synchronous belt, the second bevel gear is connected to the mounting block through a gear bracket, and the second bevel gear is rotatably connected to the gear bracket.

[0011] Preferably, the moving mechanism includes a double-rod displacement assembly, an angle adjustment assembly and a clamping assembly. The double-rod displacement assembly is used to drive the angle adjustment assembly and the clamping assembly to perform up and down and left and right displacement operations. The angle adjustment assembly is used to drive the nail to perform vertical insertion and oblique insertion operations. The clamping assembly is used to clamp and pull out the nail. The double-rod displacement assembly is arranged at the top of the vertical plate, the angle adjustment assembly is arranged at the lower end of the double-rod displacement assembly, and the clamping assembly is fixedly arranged at the lower end of the angle adjustment assembly.

[0012] Preferably, the double-rod displacement assembly includes a slide groove provided on the surface of the vertical plate, a screw rod is provided for rotation inside the slide groove, one end of the screw rod extends to the outside of the vertical plate and is fixedly connected to the output end of the first motor, a cross plate is provided on the outer thread of the screw rod, the cross plate is slidably connected to the inner wall of the slide groove, a groove is provided on the lower surface of the cross plate, a screw rod is provided for rotation inside the groove, one end of the screw rod extends to the outside of the cross plate and is fixedly connected to the output end of the second motor, a slider is provided on the outer thread of the screw rod, the slider is slidably connected to the inner wall of the groove, and the lower end of the slider is connected to the angle adjustment assembly.

[0013] Preferably, the angle adjustment assembly includes a slot block fixedly arranged at the lower end of the slider, a spherical chamber is arranged inside the slot block, a gravity ball is arranged inside the spherical chamber, a fastening bolt is screwed onto the outer side of the slot block, a leveling column is fixedly arranged at the lower end of the gravity ball, and the bottom of the leveling column is connected to the clamping assembly.

[0014] Preferably, the clamping assembly includes an electric push rod fixedly installed at the bottom of the leveling column, the output end of the electric push rod is rotatably connected to a support arm, the bottom of the support arm is rotatably connected to the moving rod, a limit block is provided on the outer side of the moving rod, the moving rod is slidably connected to the limit block, the top of the limit block is fixedly connected to the electric push rod through an oblique bracket, and a clamping plate is fixedly provided on the lower surface of the moving rod.

[0015] Preferably, the number of the rotating rods is set to 6, and the angle between any two adjacent rotating rods is set to 60°.

[0016] Preferably, a nail stand is detachably installed inside the placement slot, and the nail stand is configured as a hollow cylindrical structure. An elastic material for inserting nails is laid inside the nail stand, and the inner diameter of the nail stand is larger than the outer diameter of the nail.

[0017] Preferably, a sliding limiter is provided on the side of the vertical plate away from the mounting block for limiting the downward movement distance of the horizontal plate, and the sliding limiter includes movable grooves symmetrically arranged on both sides of the slide groove, and a U-shaped block is slidingly provided inside the movable groove, and a limit switch is fixedly installed on the upper surface of the U-shaped block, and the limit switch is electrically connected to the first motor. One end of the horizontal plate extends to the outside of the slide groove, and the horizontal plate is arranged above the U-shaped block. The U-shaped block is fixedly connected to the vertical plate by a number of bolts, and a displacement sensor for monitoring the downward movement distance of the horizontal plate is provided on the top of the vertical plate.

[0018] Preferably, a control panel is fixedly mounted on one side of the mounting block, and the control panel is electrically connected to the driving motor, the first motor, and the second motor.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. Compared to existing testing methods, this coated tire sealant testing device can automatically insert and remove nails, precisely controlling the location, depth, and angle of the puncture. It closely simulates the actual tire puncture experience during driving, making the test results more realistic, reducing manual intervention steps, and enhancing test safety.

[0021] 2. The mobile mechanism provided in the present invention can save time in manually calculating angles and rotational positions, improve test accuracy, and facilitate precise positioning. The double-rod displacement assembly drives the nail to move to different positions. With the cooperation of the locking member, it can adapt to tires of different sizes and models, has good applicability, and improves the overall utilization rate of the device.

[0022] 3. The present invention is provided with a rotating mechanism, which can cooperate with the clamping component to place the nail back into the placement slot after it is pulled out, so as to facilitate the next test operation, so that the nail pulling work can be completed within a specific time, greatly reducing the risk of timeout, greatly shortening the test cycle, improving test efficiency, and increasing production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of one side of the present invention.

[0024] Figure 2 It is a structural schematic diagram of the other side of the present invention.

[0025] Figure 3 It is a front view of the present invention.

[0026] Figure 4 For the present invention Figure 3 Schematic diagram of the internal structure.

[0027] Figure 5 For the present invention Figure 4 Enlarged schematic diagram of point A in the middle.

[0028] Figure 6 It is a structural schematic diagram of the rotating mechanism of the present invention.

[0029] Figure 7 It is a schematic structural diagram of the present invention during pricking.

[0030] Figure 8 This is a schematic structural diagram of the electric push rod of the present invention when the output end is not extended.

[0031] Figure 9 It is a structural schematic diagram of the electric push rod of the present invention when the output end is extended.

[0032] Notes on the accompanying drawings: base 101, vertical plate 102, mounting block 103, drive shaft 104, drive motor 105, test tire 106, adapter 107, moving groove 108, U-shaped block 109, displacement sensor 110, control panel 111, rotating mechanism 200, turntable 201, rotating rod 202, placement groove 203, rotating shaft 204, first bevel gear 205, second bevel gear 206, synchronous belt 207, nail stand 208, moving mechanism 300, slide groove 301, screw rod 302, cross plate 303, groove 304, screw rod 305, slider 306, slot block 307, gravity ball 308, electric push rod 309, support arm 310, moving rod 311, limit block 312, clamping plate 313. DETAILED DESCRIPTION

[0033] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0034] Example 1

[0035] In this embodiment, if Figures 1-9 As shown, a puncture device for testing the sealing performance of a coated tire includes a base 101. The lower surface of the base 101 is symmetrically provided with support members to play a supporting role and facilitate movement. A timer can be provided on one side of the base 101 to record the nail pulling time and verify whether the device has timed out. A vertical plate 102 is fixedly connected to one side of the base 101. A mounting block 103 is fixedly installed on the upper surface of the base 101. The internal rotation of the mounting block 103 is connected to a drive shaft 104. One end of the drive shaft 104 extends to the outside of the mounting block 103 and is fixedly connected to the output end of the drive motor 105. By controlling Panel 111 sets the speed, acceleration and other parameters of the drive motor 105. After the drive motor 105 is started, it drives the drive shaft 104 to rotate, and then drives the test tire 106 to rotate the corresponding angle, so that the positions of the six nails can be evenly distributed along the tire axis to ensure that a precise rotation angle is achieved. The drive motor 105 is fixedly connected to the base 101 through a motor bracket. The other end of the drive shaft 104 is installed with a test tire 106. The test tire 106 is connected to the drive shaft 104 through a locking member, which facilitates the installation and removal of the test tire 106 and is suitable for tires of different sizes.

[0036] The device further includes a rotating mechanism 200 and a moving mechanism 300. The rotating mechanism 200 is disposed on a side of the test tire 106 near the riser 102 and is used to place nails and automatically rotate the nails to a corresponding angle in conjunction with the test tire 106. The moving mechanism 300 is disposed above the test tire 106 and is used to cooperate with the nails for puncturing and removing the nails. Before using the puncture device for testing the sealing performance of coated tires, the device is first checked for normal operation. The test tire 106 is then fixed to the drive shaft 104 by a locking member, and the device is put into a ready-to-use state.

[0037] The locking part includes an adapter 107, which is fixedly mounted on the drive shaft 104 by a number of fixing bolts. A number of screw holes are provided on the surface of the adapter 107 and the test tire 106. The test tire 106 is connected to the adapter 107 by a number of studs. The wheel hub of the test tire 106 is provided with evenly distributed screw holes. An adapter 107 with corresponding screw holes is installed on the drive shaft 104 to ensure that the screw holes of the adapter 107 match the number, position and size of the screw holes of the tire wheel hub. The test tire 106 is then clamped on one side of the adapter 107 to align the screw holes of the two. The test tire 106 is fastened to the adapter 107 by means of studs and nuts passing through the screw holes, thereby mounting the test tire 106 on the drive shaft 104.

[0038] Among them Figure 2-Figure 7As shown, the rotating mechanism 200 includes a turntable 201 arranged above the mounting block 103, and a plurality of rotating rods 202 are evenly distributed on the outer wall of the turntable 201. The ends of the rotating rods 202 are provided with placement grooves 203 for placing nails. The bottom of the turntable 201 is fixedly connected to a rotating shaft 204, and the rotating shaft 204 is rotatably connected to the mounting block 103. A first bevel gear 205 is fixedly installed on the outer side of the rotating shaft 204, and a second bevel gear 206 is meshed with one side of the first bevel gear 205. The diameters of the gear shaft, the rotating shaft 204, and the drive shaft 104 adopt an adaptive structure, so that after the test tire 106 rotates 60°, the turntable 201 and the rotating rod 202 also rotate 60°, so that the corresponding rotating rod 202 can be at the same puncture position as the test tire 106. The second bevel gear 206 is connected to the mounting block 103 through the gear bracket, and the second bevel gear 206 is rotatably connected to the gear bracket, and the gear bracket supports the second bevel gear 206.

[0039] Among them Figure 2-Figure 9 As shown, the moving mechanism 300 includes a double-rod displacement assembly, an angle adjustment assembly and a clamping assembly. The double-rod displacement assembly is used to drive the angle adjustment assembly and the clamping assembly to perform up and down, left and right displacement operations. The angle adjustment assembly is used to drive the nail to perform vertical insertion and oblique insertion operations. The clamping assembly is used to clamp and pull out the nail. The double-rod displacement assembly is arranged at the top of the vertical plate 102, the angle adjustment assembly is arranged at the lower end of the double-rod displacement assembly, and the clamping assembly is fixedly arranged at the lower end of the angle adjustment assembly, which is convenient for accurately controlling the position, depth and angle of the puncture, so that the test results are more in line with the real scene and reduce the number of manual steps.

[0040] Among them Figure 2-Figure 7As shown, the double-rod displacement assembly includes a slide groove 301 provided on the surface of the vertical plate 102, and a screw rod 302 is provided for rotation inside the slide groove 301. One end of the screw rod 302 extends to the outside of the vertical plate 102 and is fixedly connected to the output end of the first motor. The first motor is started to drive the screw rod 302 to rotate, and then the horizontal plate 303 is driven to move along the direction of the slide groove 301 to facilitate adjustment of the position of the horizontal plate 303. The outer thread of the screw rod 302 is provided with a horizontal plate 303, and the horizontal plate 303 is slidably connected to the inner wall of the slide groove 301. A groove 304 is provided on the lower surface of the horizontal plate 303. A structure similar to a sliding limiter can also be provided under the horizontal plate 303 to ensure The moving distance of the slider 306, the internal rotation of the groove 304 is provided with a screw 305, one end of the screw 305 extends to the outside of the horizontal plate 303 and is fixedly connected to the output end of the second motor. The second motor is started to drive the screw 305 to rotate, and then the slider 306 is driven to move along the direction of the groove 304, so as to facilitate the adjustment of the relative positions of the slider 306, the nail and the test tire 106. The outer thread of the screw 305 is provided with a slider 306, and the slider 306 is slidably connected to the inner wall of the groove 304. The lower end of the slider 306 is connected to the angle adjustment component, which is used to drive the nail to be inserted vertically and obliquely to meet different angle requirements.

[0041] Among them Figure 3-Figure 9 As shown, the angle adjustment assembly includes a slot block 307 fixedly arranged at the lower end of the slider 306, a spherical chamber is arranged inside the slot block 307, and a gravity ball 308 is arranged inside the spherical chamber. A fastening bolt is screwed onto the outer side of the slot block 307 to fix the position of the gravity ball 308. A leveling column is fixedly provided at the lower end of the gravity ball 308, and the bottom of the leveling column is connected to the clamping assembly, so that the device can perform vertical and inclined insertion operations of nails, thereby increasing applicability.

[0042] Among them Figure 8 and Figure 9As shown, the clamping assembly includes an electric push rod 309 fixedly installed at the bottom of the leveling column. The telescopic operation of the electric push rod 309 can control the opening and closing of the clamping plate 313 to ensure that the nail can be firmly clamped or smoothly pulled out. The output end of the electric push rod 309 is rotatably connected to the support arm 310. The bottom of the support arm 310 is rotatably connected to the moving rod 311. A limit block 312 is set on the outer side of the moving rod 311. The moving rod 311 is slidably connected to the limit block 312. The top of the limit block 312 is fixedly connected to the electric push rod 309 through an oblique bracket. The moving rod 311 A clamping plate 313 is fixedly provided on the lower surface. When the electric push rod 309 is not retracted, the two clamping plates 313 are close to each other. When the electric push rod 309 is extended, the support arm 310 is driven to move downward. Since the limit block 312 has a limiting effect on the moving rod 311, the two moving rods 311 will move along the limit block 312 toward the side away from each other, thereby making the two clamping plates 313 move away from each other, facilitating separation from the nail. When performing the clamping operation, the electric push rod 309 is retracted to clamp the nail.

[0043] Among them Figure 1-Figure 7 As shown, the number of rotating rods 202 is set to 6, and the angle between any two adjacent rotating rods 202 is set to 60°. The position of the rotating rod 202 is restricted so that when the puncture operation is performed, the puncture position of the test tire 106 and the corresponding rotating rod 202 are on the same horizontal line. After the puncture operation of one nail is completed, when the test tire 106 rotates to the next puncture point, the next rotating rod 202 also rotates to the horizontal line of the puncture point, which facilitates the clamping and extraction operations of the nail.

[0044] Among them Figure 4-Figure 6 As shown, a nail stand 208 is detachably installed inside the placement slot 203. The nail stand 208 is set to a hollow cylindrical structure. An elastic material for inserting nails is laid inside the nail stand 208. The elastic material is optional and includes but is not limited to sponge, rubber, foam, etc., and can be selected according to factors such as the material, thickness, length and use environment of the nail to achieve the best nail fixing effect. The inner diameter of the nail stand 208 is larger than the outer diameter of the nail, so that the nail is inserted into the nail stand 208 before the piercing operation is performed. After the piercing operation is completed, the nail can directly fall into the nail stand 208.

[0045] Example 2

[0046] The difference from Example 1 is that Figure 2As shown, a sliding limiter is provided on the side of the vertical plate 102 away from the mounting block 103, which is used to limit the downward movement distance of the horizontal plate 303. The piercing depth is controlled by adjusting the position of the U-shaped block 109 during the piercing process. When the piercing action reaches the set position, the horizontal plate 303 moves up to the highest position. The sliding limiter includes a movable groove 108 symmetrically arranged on both sides of the slide groove 301. A U-shaped block 109 is slidingly provided inside the movable groove 108. A limit switch is fixedly installed on the upper surface of the U-shaped block 109. The limit switch is electrically connected to the first motor. When the horizontal plate 303 reaches this position, the limit switch is triggered to send a signal to the first motor, thereby immediately changing the rotation direction of the first motor, so that the first motor drives the horizontal plate 303 to move upward. Until it returns to the highest position, one end of the horizontal plate 303 extends to the outside of the slide 301. The horizontal plate 303 is arranged above the U-shaped block 109. The U-shaped block 109 is fixedly connected to the vertical plate 102 by a number of bolts, which is convenient for adjusting the position of the U-shaped block 109. Since the specifications of the test tire 106 and the size of the slide 301 are fixed values, it is convenient to accurately control the puncture depth. A displacement sensor 110 for monitoring the downward movement distance of the horizontal plate 303 is provided on the top of the vertical plate 102, which monitors the position information of the horizontal plate 303 in real time and transmits the data to the control panel 111. A displacement sensor is also fixed at the lower end of the horizontal plate 303. The displacement sensor is electrically connected to the control panel 111 and the second motor to facilitate controlling the sliding position of the slider 306.

[0047] Among them Figure 1 and Figure 3 As shown, a control panel 111 is fixedly installed on one side of the mounting block 103. The control panel 111 is electrically connected to the drive motor 105, the first motor, and the second motor. The control panel 111 is electrically connected to other electrical components of the device, so that signals can be output through the control panel 111 to control the electrical components of the device, thereby increasing the precision performance of the device.

[0048] During use, the tester first inserts a number of nails into the corresponding nail stand 208, and installs an adapter 107 with a number of screw holes on the drive shaft 104, ensuring that the screw holes of the adapter 107 match the number, position and size of the screw holes of the test tire 106, and then fastens the test tire 106 and the adapter 107 together by means of studs and nuts passing through the screw holes, thereby installing the test tire 106 on the drive shaft 104, inputs corresponding instructions through the control panel 111, and adjusts parameters such as the motor speed according to values ​​such as the tire size, the distance between the nail and the tire puncture point, and the puncture depth to ensure the accuracy of the device during puncture and nail removal, starts the first motor to drive the horizontal plate 303 to move up and down, and starts the second motor to drive the slider 306 and the clamping assembly to move left and right, so as to facilitate the adjustment of the slider 306, the nail and the test wheel The relative position between the tires 106 is convenient for clamping, lifting, moving to the right, puncturing, and releasing operations of the nails. When the slider 306 drives the nail to move above the puncture point of the test tire 106, the first motor drives the cross plate 303 to automatically puncture downward. When the puncture action reaches the limit switch position, it automatically moves up to the highest position, and then repeats the above-mentioned nail clamping operation. After repeating five times, the 6 nails are evenly distributed along the axial direction of the test tire 106. After a period of time, the first motor is started again to drive the cross plate 303 to move downward. When it reaches the nail position, the nail is pulled out by moving the clamping assembly in conjunction with the cross plate 303 upward. The nail is moved and placed into the placement slot 203 by the second motor, which is convenient for subsequent processing and the automatic puncture and extraction operations of the nail, thereby increasing the overall test safety performance.

[0049] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included within the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A puncture device for testing the sealing performance of a coated tire, comprising a base (101), a vertical plate (102) fixedly connected to one side of the base (101), a mounting block (103) fixedly mounted on the upper surface of the base (101), a drive shaft (104) rotatably connected to the interior of the mounting block (103), one end of the drive shaft (104) extending to the outside of the mounting block (103) and fixedly connected to the output end of a drive motor (105), the drive motor (105) being fixedly connected to the base (101) via a motor bracket, a test tire (106) mounted on the other end of the drive shaft (104), and the test tire (106) being connected to the drive shaft (104) via a locking member; It is characterized by: The invention also includes a rotating mechanism (200), which is arranged on a side of the test tire (106) close to the vertical plate (102) and is used to place nails and automatically rotate the nails to a corresponding angle in conjunction with the test tire (106); A moving mechanism (300) is provided above the test tire (106) and is used to cooperate with the nail to perform piercing and nail removal operations; The locking member comprises an adapter (107), the adapter (107) being fixedly mounted on the drive shaft (104) via a plurality of fixing bolts, a plurality of screw holes being provided on the surfaces of the adapter (107) and the test tire (106), and the test tire (106) being connected to the adapter (107) via a plurality of studs.

2. A puncture device for testing the tightness of a coated tire according to claim 1, characterized in that: The rotating mechanism (200) comprises a rotating disk (201) arranged above the mounting block (103), a plurality of rotating rods (202) are evenly distributed on the outer wall of the rotating disk (201), and the ends of the rotating rods (202) are each provided with a placement groove (203) for placing nails. A rotating shaft (204) is fixedly connected to the bottom of the rotating disk (201), and the rotating shaft (204) is rotatably connected to the mounting block (103). A first bevel gear (205) is fixedly installed on the outer side of the rotating shaft (204). A second bevel gear (206) is meshed with one side of the first bevel gear (205), one end of the gear shaft of the second bevel gear (206) is fixedly connected to the first synchronous pulley, a second synchronous pulley is fixedly provided on the drive shaft (104), the first synchronous pulley and the second synchronous pulley are connected via a synchronous belt (207), the second bevel gear (206) is connected to the mounting block (103) via a gear bracket, and the second bevel gear (206) is rotatably connected to the gear bracket.

3. The puncture device for testing the sealing performance of a coated tire according to claim 1, characterized in that: The moving mechanism (300) includes a double-rod displacement assembly, an angle adjustment assembly, and a clamping assembly. The double-rod displacement assembly is used to drive the angle adjustment assembly and the clamping assembly to perform vertical and horizontal displacement operations. The angle adjustment assembly is used to drive the nail to perform vertical insertion and oblique insertion operations. The clamping assembly is used to perform nail clamping and extraction operations. The double-rod displacement assembly is arranged on the top of the vertical plate (102), the angle adjustment assembly is arranged at the lower end of the double-rod displacement assembly, and the clamping assembly is fixedly arranged at the lower end of the angle adjustment assembly.

4. The puncture device for testing the sealing performance of a coated tire according to claim 3, characterized in that: The double-rod displacement assembly includes a slide groove (301) provided on the surface of the vertical plate (102), a screw rod (302) is rotatably provided inside the slide groove (301), one end of the screw rod (302) extends to the outside of the vertical plate (102) and is fixedly connected to the output end of the first motor, the outer thread of the screw rod (302) is provided with a cross plate (303), the cross plate (303) is slidably connected to the inner wall of the slide groove (301), a groove (304) is provided on the lower surface of the cross plate (303), a screw rod (305) is rotatably provided inside the groove (304), one end of the screw rod (305) extends to the outside of the cross plate (303) and is fixedly connected to the output end of the second motor, the outer thread of the screw rod (305) is provided with a slider (306), the slider (306) is slidably connected to the inner wall of the groove (304), and the lower end of the slider (306) is connected to the angle adjustment assembly.

5. The puncture device for testing the sealing performance of a coated tire according to claim 4, characterized in that: The angle adjustment assembly comprises a slot block (307) fixedly arranged at the lower end of the slider (306); a spherical chamber is arranged inside the slot block (307); a gravity ball (308) is arranged inside the spherical chamber; a fastening bolt is screwed onto the outer side of the slot block (307); a leveling column is fixedly arranged at the lower end of the gravity ball (308); and the bottom of the leveling column is connected to the clamping assembly.

6. The puncture device for testing the sealing performance of a coated tire according to claim 5, characterized in that: The clamping assembly comprises an electric push rod (309) fixedly mounted at the bottom of the leveling column, the output end of the electric push rod (309) is rotatably connected to a support arm (310), the bottom of the support arm (310) is rotatably connected to a moving rod (311), a limiting block (312) is provided on the outer side of the moving rod (311), the moving rod (311) is slidably connected to the limiting block (312), the top of the limiting block (312) is fixedly connected to the electric push rod (309) via an oblique bracket, and a clamping plate (313) is fixedly provided on the lower surface of the moving rod (311).

7. The puncture device for testing the sealing performance of a coated tire according to claim 2, characterized in that: The number of the rotating rods (202) is set to 6, and the angle between any two adjacent rotating rods (202) is set to 60°.

8. The puncture device for testing the sealing performance of a coated tire according to claim 2, characterized in that: A nail stand (208) is detachably mounted inside the placement slot (203). The nail stand (208) is a hollow cylindrical structure. An elastic material for inserting nails is laid inside the nail stand (208). The inner diameter of the nail stand (208) is larger than the outer diameter of the nail.

9. The puncture device for testing the sealing performance of a coated tire according to claim 4, characterized in that: A sliding limiter for limiting the downward movement distance of the transverse plate (303) is provided on one side of the vertical plate (102) away from the mounting block (103), the sliding limiter comprising movable grooves (108) symmetrically arranged on both sides of the slide groove (301), a U-shaped block (109) being slidingly arranged inside the movable groove (108), a limit switch being fixedly mounted on the upper surface of the U-shaped block (109), the limit switch being electrically connected to the first motor, one end of the transverse plate (303) extending to the outside of the slide groove (301), the transverse plate (303) being arranged above the U-shaped block (109), the U-shaped block (109) being fixedly connected to the vertical plate (102) by a plurality of bolts, and a displacement sensor (110) for monitoring the downward movement distance of the transverse plate (303) being provided on the top of the vertical plate (102).

10. The puncture device for testing the sealing performance of a coated tire according to claim 4, characterized in that: A control panel (111) is fixedly mounted on one side of the mounting block (103), and the control panel (111) is electrically connected to the drive motor (105), the first motor, and the second motor.

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