A system and method for detecting the air tightness of a rubber tire

Abstract

The application discloses a kind of air tightness detection system and detection method of rubber tire, it is related to tire air tightness detection technical field, including rack, the lower side of rack is provided with water tank, the inside of water tank is provided with rotating roller and tire to be detected, further comprising: moving plate, its two groups of symmetrical sealing sliding are arranged in the inside of water tank, moving plate divides water tank into the detection area located in middle position and the cleaning area located in both sides position, detection liquid in the inside of detection area detects tire, cleaning liquid in the inside of cleaning area washes tire;Flow stabilizing component is arranged in the inside of detection area, including partition, when rotating roller extrudes tire and detects, two groups of moving plate move and change the distance value between with partition, for buffering the impact force of detection liquid;The application sets up cleaning and detection partition, avoids liquid pollution, and moving plate can adjust liquid level and adapt to different tires;Flow stabilizing component buffers liquid, suppresses fluctuation, buffers liquid impact, guarantees that bubble observation is clear and stable.

Description

Technical Field

[0001] This invention relates to the field of tire air tightness testing technology, and particularly to a tire air tightness testing system and method. Background Technology

[0002] In the fields of rubber tire manufacturing, finished product quality inspection, and automotive after-sales maintenance and inspection, tire air tightness testing is a key process to ensure the safety of tires on the road and control the quality of tire products leaving the factory. The principle is to fill the tire with gas at a preset pressure, place the tire in a test water environment, and observe the presence and location of air bubbles on the tire surface, combined with the changes in the internal air pressure of the tire, to determine whether the tire air tightness meets the standard, and at the same time locate the air leakage point of the tire.

[0003] Chinese patent application CN115664461A discloses a tire air tightness performance testing device, including a base, a testing pool and a testing platform at the upper end of the base, which are distributed left and right. The upper end of the testing pool is provided with a testing groove, and the end of the testing platform near the testing pool is provided with an adjustment mechanism. The adjustment mechanism is connected to a drive mechanism, and the drive mechanism is connected to a positioning mechanism.

[0004] Chinese patent application CN111323174A discloses a tire manufacturing and forming inspection system and method. The inspection system includes a base plate, a worktable, an inspection device, and a moving device. The worktable is installed on the upper part of the base plate, the inspection device is installed on the upper part of the worktable, and the moving device is installed on the lower part of the worktable. Moving grooves are evenly distributed along the circumferential direction on the worktable.

[0005] The above-mentioned technical solutions have many defects in actual use. For example, there is no separate design for the cleaning area and the testing area. Tires entering the testing area directly can easily contaminate the testing fluid. Furthermore, there is no cleaning fluid wiping and self-cleaning structure after tire cleaning, which can easily cause secondary contamination of the testing area. At the same time, the liquid level adjustment is cumbersome and has poor adaptability. When simulating tires driving on bumpy roads, the rotating roller disturbs the testing fluid, causing the liquid surface to fluctuate and affecting the accuracy of bubble observation. In addition, there is no impurity guiding structure, and impurities in the cleaning area are easy to accumulate for a long time and are difficult to clean.

[0006] Therefore, it is necessary to invent a rubber tire air tightness testing system and testing method to solve the above problems. Summary of the Invention

[0007] The purpose of this invention is to provide an airtightness testing system and method for rubber tires to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a rubber tire air tightness testing system and method, comprising a frame, symmetrically arranged support members inside the frame, a water tank arranged on the lower side of the frame, and a rotating roller arranged inside the water tank, and further comprising: The movable plate has two sets of symmetrically sealed sliding installations inside the water tank. The movable plate divides the water tank into a detection zone in the middle and a cleaning zone on both sides. The detection fluid in the detection zone is used to detect the tires, and the cleaning fluid in the cleaning zone is used to clean the tires. The flow stabilizing component, which is located inside the detection zone, includes baffles and throttling orifices. When the rotating roller squeezes the tire for detection, two sets of moving plates move and change the distance between them and the baffles to buffer the impact force of the detection fluid. The drainage component, located inside the clean area, includes a ramp. As the moving plate reciprocates, the ramp guides the flow of detection fluid and impurities within the clean area.

[0009] Preferably, the partition is fixedly connected to the inner wall of the water tank and located inside the detection zone, and is used to adjust the liquid level of the detection liquid inside the detection zone. The ramp is symmetrically fixedly connected to the inner wall of the cleaning zone on the side away from the detection zone, and the height of the ramp is greater than the liquid level of the cleaning liquid in the cleaning zone.

[0010] Preferably, the cleaning zone includes two areas, a left cleaning zone and a right cleaning zone, which are symmetrically arranged on both sides of the detection zone. A connecting pipe is provided on the lower outer side of the water tank, and the left and right cleaning zones are connected through the connecting pipe to maintain the same liquid level.

[0011] Preferably, the plurality of throttling orifices are disposed inside the partition, and the two sides of the throttling orifices are in communication with the detection liquid inside the detection zone. When the moving plate moves away from the partition, the space between the moving plate and the partition increases and the detection liquid between the two sets of partitions is drawn through the plurality of throttling orifices.

[0012] Preferably, the waste drainage component further includes a waste drainage trough disposed at the bottom of the cleaning area, which collects impurities in the cleaning area after the tire cleaning is completed.

[0013] Preferably, the water tank and the upper sidewall of the movable plate are symmetrically provided with cleaning sections. The cleaning sections are "L"-shaped and conform to the surface of the tire. After the tire is cleaned in the cleaning area, the movable plate drives the cleaning sections to squeeze the tire and wipe away the residual cleaning liquid on the tire surface.

[0014] Preferably, a driving component is provided on the side of the movable plate away from the partition to drive the movable plate to move; the support component has an inflation pipe inside for inflating the tire.

[0015] Preferably, a control unit is provided on one side of the frame, including a rotating part and an inflation part. The rotating part is used to drive the support to rotate during the tire air tightness inspection process, and the inflation part is used to inflate the tire through the inflation pipe inside the support.

[0016] Preferably, push rods are hinged at both ends of the rotating roller to drive the rotating roller to move up and down to simulate tire load driving conditions, and a drive rod is provided below the water tank to drive the water tank as a whole to move up and down; multiple drain pipes are provided below the water tank for replacing the detection fluid in the detection area and the cleaning fluid in the cleaning area.

[0017] A method for testing the air tightness of a rubber tire, comprising the steps of using an air tightness testing system for testing the tire, the method including the following steps: S1. After the support clamps the tire, it moves the tire to the top of the cleaning area. The water tank rises, and the support rotates the tire to pre-clean the tire surface with cleaning fluid. S2. After cleaning, the water tank descends, the support component moves and rotates the tire, the cleaning part elastically wraps the tire, and the cleaning part wipes away the residual cleaning fluid on the tire surface. S3. The support component drives the tire into the detection zone. The rotating roller moves up and down to simulate different load states when the tire is driving. The moving plate moves away from the tire and buffers the fluctuation of the detection fluid through the throttle orifice. At the same time, the sewage discharge component guides the impurities in the clean zone to gather and be discharged. S4. When the tire diameter increases, the moving plate moves to raise the liquid level in the detection area, so that the liquid level in the detection area is always higher than the lower half of the tire. S5. If a risk of tire bursting is detected, the support moves to both sides, the moving plates move closer to each other and raise the liquid level in the detection area.

[0018] The technical effects and advantages of this invention are as follows: 1. The present invention sets up a partitioned structure of a cleaning zone and a testing zone. The tire is first pre-cleaned in the cleaning zone to avoid impurities contaminating the testing liquid inside the testing zone; and the liquid level is adjusted by a moving plate to adapt to tires of different diameters and ensure the cleanliness of the testing liquid.

[0019] 2. This invention uses the baffle and throttling orifice of the flow stabilizing component, along with the synchronous movement of the moving plate, to draw in and divert the fluctuating liquid surface, reduce the liquid flow rate and limit the disorderly flow of the liquid, effectively buffer the impact of the liquid and suppress the fluctuation of the liquid surface, and ensure clear and stable observation of bubbles.

[0020] 3. When the present invention detects the risk of tire bursting, the support component is quickly depressurized, the roller is quickly withdrawn, and at the same time the moving plate raises the liquid level in the detection area, allowing the tire to quickly sink into the detection liquid. The liquid resistance is used to buffer the impact of the bursting and prevent fragments from flying.

[0021] 4. The present invention provides a cleaning section above the water tank and the moving plate to wipe and clean the tires that have been cleaned in the cleaning area, preventing the tires from carrying sewage into the testing area. At the same time, the cleaning section works with the moving plate to squeeze and clean itself.

[0022] 5. This invention guides impurities in the cleaning area to converge into the drainage trough through a ramp, preventing impurities from accumulating in corners and making them difficult to clean later. Attached Figure Description

[0023] Figure 1 This is a frontal view of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall rear view structure of the present invention; Figure 3 This is a frontal view of the internal structure of the present invention; Figure 4 This is a schematic diagram of the internal structure of the water tank of the present invention, excluding the tires. Figure 5 This is a schematic diagram of the internal structure of the water tank containing the tire, taken from the front view, according to the present invention. Figure 6 This is a schematic diagram of the internal cross-sectional view of the water tank of the present invention. Figure 7 This is a front view schematic diagram of the internal structure of the water tank and the drive rod of the present invention. Figure 8 This is a schematic diagram of the rear view of the water tank structure of the present invention.

[0024] In the diagram: 1. Frame; 2. Water tank; 3. Support component; 4. Rotary roller; 5. Moving plate; 6. Flow stabilizing component; 601. Partition plate; 602. Throttling orifice; 7. Sewage discharge component; 701. Slope; 702. Sewage discharge trough; 8. Detection area; 9. Cleaning area; 9a. Left cleaning area; 9b. Right cleaning area; 10. Connecting pipe; 11. Cleaning section; 12. Drive component; 13. Push rod; 14. Drive rod; 15. Control section; 16. Drain pipe. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention. Example 1

[0026] The existing rubber tire air tightness testing system has a relatively simple testing method, which directly places the tire into the water tank 2. This causes impurities remaining on the tire surface to continuously contaminate the testing liquid in the water tank 2, affecting the observation of bubbles. In addition, the liquid level in the traditional water tank 2 cannot be adjusted, or the adjustment by draining and adding water is cumbersome and cannot be adaptively adjusted according to tires of different diameters. At the same time, when simulating the tire driving on a bumpy road, the continuous up and down movement of the rotating roller 4 will disturb the liquid in the water tank 2, which is not conducive to the observation of bubbles.

[0027] This invention provides, for example Figures 1 to 8 The invention relates to a rubber tire air tightness testing system and method, which includes a frame 1, a water tank 2 disposed on the lower side of the frame 1, a rotating roller 4 and a tire to be tested disposed inside the water tank 2, and a movable plate 5, which is symmetrically and slidably disposed inside the water tank 2, that is, the outer surface of the movable plate 5 is slidably and slidably connected to the inner wall of the water tank 2 through a rubber sealing ring.

[0028] The movable plate 5 divides the water tank 2 into a detection zone 8 located in the middle and a cleaning zone 9 located on both sides. The detection fluid in the detection zone 8 detects the tires. The detection fluid can be a liquid with a fluorescent tracer. When irradiated by ultraviolet (UV) lamps, the microbubble path appears brightly fluorescent, which greatly improves the contrast of visual sensors or the naked eye. The cleaning fluid in the cleaning zone 9 cleans the tires. This cleaning fluid can be a special tire cleaner. Therefore, the tire detection process is mainly divided into pre-cleaning in the cleaning zone 9 and bubble detection in the detection zone 8.

[0029] The flow stabilizing component 6, located inside the detection zone 8, includes a baffle 601 and a throttling orifice 602. When the rotating roller 4 moves up and down to squeeze the tire for detection, the two sets of moving plates 5 move to change the distance between themselves and the baffle 601, which is used to buffer the impact force of the detection liquid. The sewage discharge component 7, located inside the clean zone 9, includes a ramp 701. When the moving plates 5 move back and forth, the ramp 701 guides the flow of detection liquid and impurities in the clean zone 9.

[0030] The partition 601 is fixedly connected to the inner wall of the water tank 2 and located inside the detection zone 8. It is used to adjust the liquid level of the detection liquid inside the detection zone 8. Therefore, the position of the partition 601 is fixed, while the distance between the movable plate 5 and the partition 601 is adjustable. The ramp 701 is symmetrically fixedly connected to the inner wall of the cleaning zone 9 on the side away from the detection zone 8. The height of the ramp 701 is greater than the liquid level of the cleaning liquid in the cleaning zone 9, which further allows the cleaning liquid inside the cleaning zone 9 to be diverted to the side wall of the ramp 701.

[0031] The cleaning zone 9 includes two areas: a left cleaning zone 9a and a right cleaning zone 9b, which are symmetrically arranged on both sides of the detection zone 8. A connecting pipe 10 is provided on the lower outer side of the water tank 2. The left cleaning zone 9a and the right cleaning zone 9b are connected through the connecting pipe 10 and maintain the same liquid level. The movable plate 5 can adjust the liquid level of the left cleaning zone 9a and the right cleaning zone 9b by moving within them.

[0032] Multiple throttling orifices 602 are disposed inside the partition 601. The two sides of the throttling orifices 602 are connected to the detection fluid inside the detection zone 8. When the tire is being tested, the moving plate 5 moves away from the partition 601, increasing the space between the moving plate 5 and the partition 601. The detection fluid between the two sets of partitions 601 is drawn through the multiple throttling orifices 602, thereby buffering the fluctuation of the detection fluid. This allows the disordered detection fluid to flow directionally through the throttling orifices 602 into the space between the moving plate 5 and the partition 601. At the same time, the throttling orifices 602 further reduce the flow rate of the detection fluid and buffer the fluctuation of the detection fluid.

[0033] A drive unit 12 is provided on the side of the movable plate 5 away from the partition 601 to drive the movable plate 5 to move; symmetrical support members 3 are arranged inside the frame 1 to clamp the tire and drive the tire to move left and right. The end of the support member 3 is provided with a mounting wheel, and the support member 3 can adjust its own length to clamp and fix tires of different widths and adjust the detection position. The support member 3 is provided with an inflation pipe inside to inflate the tire.

[0034] A control unit 15 is provided on one side of the frame 1, including a rotating part and an inflation part. The rotating part is used to drive the support member 3 to rotate during the tire air tightness inspection process, and the inflation part is used to inflate the tire through the inflation pipe inside the support member 3.

[0035] Push rods 13 are hinged at both ends of the rotating roller 4 to drive the rotating roller 4 to move up and down to simulate driving conditions such as tire load. A drive rod 14 is provided below the water tank 2 to drive the water tank 2 to move up and down as a whole.

[0036] Multiple drain pipes 16 are installed below the water tank 2 for replacing the detection fluid in the detection area 8 and the cleaning fluid in the cleaning area 9. When the detection fluid or cleaning fluid in the water tank 2 needs to be replaced after long-term use, the drain pipes 16 can be opened to drain the fluid.

[0037] In summary, this application is based on Figure 3In the initial state, the two sets of support members 3 are in an open state, far apart from each other. The staff places the rubber tire to be tested on one set of support members 3, and then the other set of support members 3 moves laterally towards the tire, so that the support member 3 on that side is tightly pressed against the side surface of the tire. The two sets of support members 3 clamp and fix the tire in both directions, providing a stable support base for subsequent air tightness testing. Then, the inflation unit of the control unit 15 starts to work, inflating air into the tire through the inflation pipe inside the support member 3, and monitoring and accurately recording the air pressure value inside the tire in real time. When the air pressure inside the tire reaches the preset test value, the inflation unit automatically stops inflation, completing the tire inflation preparation process.

[0038] Subsequently, the support member 3 drives the tire to move laterally, so that the tire is aligned vertically with the left cleaning area 9a or the right cleaning area 9b for pre-cleaning. Taking the cleaning of the tire using the left cleaning area 9a as an example, when the tire moves above the left cleaning area 9a under the action of the support member 3, the two sets of drive rods 14 begin to move upward and drive the water tank 2 to move upward synchronously. As the water tank 2 moves upward continuously, the lower half of the tire eventually submerges below the liquid level in the left cleaning area 9a. At this time, the rotating part of the control unit 15 controls the support member 3 and the tire to rotate synchronously, using the water in the left cleaning area 9a to clean the impurities on the tire surface, preventing the tire from directly entering the detection area 8 and causing the water in the detection area 8 to gradually become turbid, thereby affecting the observation of bubbles.

[0039] After the tire cleaning is completed, multiple sets of drive rods 14 move downwards and drive the water tank 2 to descend synchronously. When the water tank 2 has descended to a certain height, the support 3 drives the tire to move to the right so that the tire is above the detection area 8. At this time, the drive rods 14 drive the water tank 2 to move upwards synchronously, so that the tire is submerged below the liquid level in the detection area 8. At this time, the push rods 13 at both ends of the rotating roller 4 drive the rotating roller 4 to move upwards and squeeze the tire. By precisely controlling the extension and retraction stroke of multiple sets of push rods 13, the rotating roller 4 applies different magnitudes of positive pressure to the tire, thereby replicating the load force that the tire experiences under different normal driving conditions such as no load, half load, and full load during actual use. Then, the support 3 drives the tire to start rotating, and the staff observes whether air bubbles are generated in the detection area 8 to determine whether the tire is leaking air.

[0040] When multiple sets of push rods 13 drive the rotating rollers 4 to move up and down continuously to simulate the driving conditions of the tire on a bumpy road, the rotating rollers 4 move up and down to continuously squeeze the tire and simulate the air tightness of the tire under different loads. Alternatively, the support 3 drives the tire to move left and right in the detection area 8 and simulates the air tightness of the tire when there are different lateral offsets. The detection fluid in the detection area 8 fluctuates continuously and impacts the partition 601.

[0041] For example, when the rotating roller 4 moves upward to squeeze the tire, the rotating roller 4 applies a pushing force to the detection liquid. At this time, the driving component 12 controls the moving plate 5 to move away from the partition 601. The movement of the moving plate 5 increases the space between the moving plate 5 and the partition 601, thereby forming a suction force on the detection liquid between the two partitions 601 through the throttling orifice 602. When the detection liquid passes through the throttling orifice 602, its own flow rate is reduced accordingly. At the same time, the detection liquid flows in a fixed direction to prevent the detection liquid from flowing randomly and causing the liquid surface of the detection area 8 to fluctuate continuously, affecting the observation.

[0042] When the rotating roller 4 moves downward, the driving component 12 controls the moving plate 5 to move closer to the partition 601. The movement of the moving plate 5 reduces the space between the moving plate 5 and the partition 601, thereby allowing the detection liquid between the moving plate 5 and the partition 601 to enter between the two partitions 601 through the throttling hole 602, preventing the rotating roller 4 from moving up and down, which would cause the liquid surface to fluctuate continuously and affect the bubble observation results.

[0043] Similarly, when the support member 3 drives the tire to move to the right along the detection area 8, the detection fluid inside the detection area 8 impacts the partition 601 to the right under the pushing force of the tire. At this time, the drive member 12 on the right controls the moving plate 5 on the right to move to the right. The movement of the moving plate 5 increases the space between the moving plate 5 on the right and the partition 601. Then, the detection fluid flowing to the right in the detection area 8 enters the space between the moving plate 5 on the right and the partition 601 through multiple throttling holes 602 under the action of suction force. This buffers the flow of the detection fluid inside the detection area 8, preventing it from impacting the side wall of the partition 601 and causing liquid surface fluctuations, which ultimately affects the airtightness detection accuracy.

[0044] At the same time, the driving component 12 on the left controls the moving plate 5 on the left to move to the right. The movement of the moving plate 5 on the left reduces the space between the moving plate 5 on the left and the partition 601. The detection liquid between the moving plate 5 on the left and the partition 601 enters the detection zone 8 through multiple throttling holes 602, thereby replenishing the detection liquid inside the detection zone 8 and preventing the liquid level inside the detection zone 8 from dropping and reducing the detection accuracy.

[0045] When the diameter of the tire increases, the drive component 12 moves the moving plate 5 towards the partition 601, thereby raising the liquid level in the detection zone 8. This ensures that the liquid level in the detection zone 8 is always higher than the lower half of the tire and remains at a preset height, thus keeping the water tank 2 at a stable height. This allows operators to accurately observe the liquid level of the detection fluid inside the detection zone 8. Compared with existing methods for adjusting the height of the water tank 2, this process is more adaptable and has better controllability, meeting the safety and precision operation needs of different operators.

[0046] When a tire develops bulges or other problems during testing, posing a risk of bursting, for example, if a pressure sensor detects a transient fluctuation in the tire pressure, the support 3 quickly moves away from the tire to release pressure inside. The push rod 13 drives the rotating roller 4 to move rapidly downwards, releasing the pressure on the tire and preventing further deformation and expansion. Once the tire loses its clamping and compressive forces, it falls freely downwards under gravity and into the testing area 8. Simultaneously, the drive 12 moves the moving plate 5 towards the partition 601 to its maximum value, thus pushing the testing fluid between the partition 601 and the moving plate 5 along the throttling orifice 602 into the space between the two partitions 601. The fluid level between the two partitions 601 reaches its maximum, accelerating the speed at which the tire is completely submerged in the testing fluid. The resistance of the testing fluid buffers the tire's bursting, preventing rubber fragments from flying randomly and damaging personnel and equipment observing the bubbles when the tire bursts in the air.

[0047] When it is necessary to replace the test solution in water tank 2, drain the test solution through drain pipe 16 and then add new clean test solution. Example 2

[0048] Based on the above embodiments, although the problems of tire pre-cleaning, liquid level adjustment, buffer fluid fluctuation and buffer explosion have been solved, there are still many problems to be solved in actual testing applications. First, when the moving plate 5 moves and the fluctuation of the test fluid in the buffer test area 8 occurs, the movement of the moving plate 5 will disturb the cleaning fluid in the cleaning area 9, causing the cleaning fluid in the cleaning area 9 to continuously impact the inner wall of the water tank 2. At the same time, the impurities in the cleaning area 9 will also continuously impact and corrode the moving plate 5 and the water tank 2. Second, when the tire enters the test area 8 from the cleaning area 9, the cleaning fluid remaining on the tire surface will contaminate the test fluid in the test area 8, causing the test fluid in the test area 8 to become turbid and affecting the observation of bubbles.

[0049] Therefore, to solve the above problems, the sewage discharge component 7 also includes a sewage discharge trough 702 located at the bottom of the cleaning area 9. After the tire cleaning is completed, the sewage discharge trough 702 collects the impurities in the cleaning area 9. The surface of the ramp 701 is a smooth plane. When the moving plate 5 moves back and forth, the moving plate 5 continuously agitates the cleaning fluid in the cleaning area 9 to prevent impurities from accumulating in the corners. At the same time, the ramp 701 guides the impurities in the cleaning area 9 to flow to the sewage discharge trough 702. When the impurities in the sewage discharge trough 702 accumulate to a certain extent, the staff opens the drain pipe 16 and uses the flow of the cleaning fluid in the cleaning area 9 to flush away the impurities, thus avoiding the accumulation of impurities in the dead corners of the water tank 2, which are difficult to clean.

[0050] The upper sidewalls of the water tank 2 and the movable plate 5 are symmetrically provided with cleaning sections 11. The cleaning section 11 is "L" shaped and can deform and fit the surface of the tire. After the tire is cleaned in the cleaning area 9, the movable plate 5 drives the cleaning section 11 to squeeze the tire and wipe the residual cleaning liquid on the tire surface. After the tire rotates one revolution to complete the wiping and cleaning, the movable plate 5 and the water tank 2 use the tire to squeeze the cleaning section 11 to discharge the residual cleaning liquid in the cleaning section 11 by squeezing, so as to prevent the cleaning section 11 from containing cleaning liquid for a long time and causing pollution and damage.

[0051] In summary, during use, the support member 3 drives the tire to rotate inside the left cleaning zone 9a for pre-cleaning. The position of the left moving plate 5 matches the width of the tire. The liquid level in the left cleaning zone 9a can be adjusted by the right moving plate 5 inside the right cleaning zone 9b. For example, when the tire width increases, the left drive member 12 only needs to drive the left moving plate 5 to move to the right and increase the width of the left cleaning zone 9a. When the tire diameter increases while the width remains unchanged, the tire needs to be cleaned at a higher height. Therefore, the right drive member 12 controls the right moving plate 5 to move to the right. By means of the communicating vessel principle, the tilt inside the right cleaning zone 9b also enters the left cleaning zone 9a through the communicating pipe 10, and the liquid level of the cleaning fluid inside the left cleaning zone 9a rises accordingly, further fulfilling the pre-cleaning requirements of the cleaning zone 9 for different tires.

[0052] Furthermore, the maximum liquid level of the cleaning fluid inside the left cleaning zone 9a will not exceed the height of the cleaning section 11. This process effectively prevents the cleaning section 11 from directly contacting the cleaning fluid in the left cleaning zone 9a, and prevents the liquid level of the cleaning fluid in the left cleaning zone 9a from being too high and exceeding the moving plate 5, causing the cleaning fluid in the left cleaning zone 9a to enter the detection zone 8, thus ensuring the cleanliness of the cleaning section 11 and the detection zone 8.

[0053] Before the tire enters the inspection area 8 for air tightness testing after cleaning in the left cleaning zone 9a, the drive rod 14 first moves the water tank 2 downwards by a certain height, so that the height of the cleaning part 11 on the upper side of the moving plate 5 is flush with the side of the tire. At this time, the support member 3 moves the tire towards the cleaning part 11 on the water tank 2 near the left cleaning zone 9a, so that the left side of the tire abuts against the side of the cleaning part 11. At the same time, the drive member 12 in the left cleaning zone 9a moves the moving plate 5 towards the tire, so that the side of the cleaning part 11 on the moving plate 5 abuts against the right side of the tire. This achieves elastic wrapping of the tire's outer surface by the two cleaning parts 11, and the elasticity of the cleaning parts 11 completely wraps the two sides of the tire end face, further improving the wiping and removal effect of the cleaning fluid on the tire's outer surface by the subsequent cleaning parts 11.

[0054] At this time, the support member 3 drives the tire to rotate, and the two sets of cleaning parts 11 on the moving plate 5 and the water tank 2 wipe the residual cleaning fluid on the tire surface. During this process, the right driving member 12 inside the right cleaning zone 9b controls the right moving plate 5 to move to the left to the maximum distance. Then the space of the right cleaning zone 9b reaches the maximum value. Under the principle of communicating vessels, the cleaning fluid inside the left cleaning zone 9a continuously enters the right cleaning zone 9b along the connecting pipe 10, and the liquid level of the cleaning fluid inside the left cleaning zone 9a continuously drops to the minimum value. This effectively avoids the cleaning fluid from shaking and causing secondary pollution to the tire when the cleaning part 11 wraps and rotates to clean the outer surface of the tire.

[0055] After the tire rotates once and is cleaned, the support 3 moves the tire toward the inspection area 8. During this process, the moving plate 5 moves the cleaning part 11 to the left and squeezes the right cleaning part 11. The cleaning fluid in the two cleaning parts 11 is discharged by mutual squeezing, preventing the cleaning fluid from staying inside the cleaning part 11 for a long time and causing pollution. When the cleaning part 11 reduces its wiping effect on the tire, it is only necessary to replace the cleaning part 11 with a new one.

[0056] After the pre-cleaning of the tire is completed, the support 3 moves the tire to the inside of the detection area 8 and performs the detection according to Example 1. When the moving plate 5 moves back and forth to buffer the detection fluid in the detection area 8, the moving plate 5 continuously disturbs the cleaning fluid in the cleaning area 9 to prevent impurities from accumulating in the cleaning area 9. At the same time, the impurities in the cleaning area 9 slide down the slope 701 under their own gravity. The slope 701 guides the impurities to automatically converge into the bottom drain trough 702 to prevent the impurities in the cleaning area 9 from accumulating in the dead corner at the bottom of the vertical right angle and wearing out the equipment.

[0057] After the tire inspection is completed, replace the tires with new ones and repeat the above process. Example 3

[0058] A method for testing the air tightness of a rubber tire, comprising the following steps: (The method utilizes a rubber tire air tightness testing system to perform air tightness testing on the tire.) S1. After the support member 3 clamps the tire, it moves the tire to the top of the cleaning area 9. The water tank 2 rises, and the support member 3 drives the tire to rotate, using the cleaning fluid to pre-clean the tire surface.

[0059] S2. After cleaning, the water tank 2 descends, the support 3 drives the tire to move and rotate, the cleaning part 11 elastically wraps the tire, and the cleaning part 11 wipes away the residual cleaning fluid on the tire surface.

[0060] S3, support member 3 drives the tire into the detection zone 8, the rotating roller 4 moves up and down to simulate different load states when the tire is driving, the moving plate 5 moves away from the tire and buffers the fluctuation of the detection fluid through the throttle hole 602; at the same time, the sewage discharge component 7 guides the impurities in the clean zone 9 to gather and be discharged.

[0061] S4. When the tire diameter increases, the moving plate 5 moves to raise the liquid level in the detection area 8, so that the liquid level in the detection area 8 is always higher than the lower half of the tire.

[0062] S5. If a risk of tire bursting is detected, the support 3 moves to both sides, the moving plate 5 moves towards each other and raises the liquid level in the detection area 8.

[0063] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A rubber tire air tightness testing system, comprising a frame (1), symmetrically arranged support members (3) inside the frame (1), a water tank (2) arranged on the lower side of the frame (1), and a rotating roller (4) arranged inside the water tank (2), characterized in that, Also includes: The movable plate (5) has two sets of symmetrically sealed sliding arrangements inside the water tank (2). The movable plate (5) divides the water tank (2) into a detection zone (8) located in the middle and a cleaning zone (9) located on both sides. The detection fluid inside the detection zone (8) detects the tires, and the cleaning fluid inside the cleaning zone (9) cleans the tires. The flow stabilizing component (6) is located inside the detection zone (8) and includes a partition (601) and a throttling orifice (602). When the rotating roller (4) squeezes the tire for detection, the two sets of moving plates (5) move and change the distance between them and the partition (601) to buffer the impact force of the detection liquid. The sewage discharge assembly (7), which is located inside the clean area (9), includes a ramp (701). When the moving plate (5) moves back and forth, the ramp (701) guides the flow of detection liquid and impurities in the clean area (9).

2. The air tightness testing system for rubber tires according to claim 1, characterized in that, The partition (601) is fixedly connected to the inner wall of the water tank (2) and located inside the detection area (8) to adjust the liquid level of the detection liquid inside the detection area (8). The ramp (701) is symmetrically fixedly connected to the inner wall of the cleaning area (9) on the side away from the detection area (8), and the height of the ramp (701) is greater than the liquid level of the cleaning liquid in the cleaning area (9).

3. The air tightness testing system for rubber tires according to claim 1, characterized in that, The cleaning zone (9) includes two areas: a left cleaning zone (9a) and a right cleaning zone (9b), which are symmetrically arranged on both sides of the detection zone (8). A connecting pipe (10) is provided on the lower outer side of the water tank (2). The left cleaning zone (9a) and the right cleaning zone (9b) are connected through the connecting pipe (10) and maintain the same liquid level.

4. The air tightness testing system for rubber tires according to claim 1, characterized in that, Multiple throttling orifices (602) are disposed inside the partition (601). The two sides of the throttling orifices (602) are connected to the detection liquid inside the detection zone (8). When the moving plate (5) moves away from the partition (601), the space between the moving plate (5) and the partition (601) increases and the detection liquid between the two sets of partitions (601) is drawn through the multiple throttling orifices (602).

5. The air tightness testing system for rubber tires according to claim 1, characterized in that, The sewage discharge assembly (7) also includes a sewage discharge trough (702) located at the bottom of the cleaning area (9). After the tire cleaning is completed, the sewage discharge trough (702) collects the impurities in the cleaning area (9).

6. The air tightness testing system for rubber tires according to claim 3, characterized in that, The water tank (2) and the upper sidewall of the moving plate (5) are symmetrically provided with cleaning parts (11). The cleaning parts (11) are "L" shaped and fit the surface of the tire. After the tire is cleaned in the cleaning area (9), the moving plate (5) drives the cleaning parts (11) to squeeze the tire and wipe the cleaning liquid remaining on the tire surface.

7. The air tightness testing system for rubber tires according to claim 1, characterized in that, The moving plate (5) is provided with a driving member (12) on the side away from the partition (601) to drive the moving plate (5) to move; the support member (3) is provided with an inflation pipe inside to inflate the tire.

8. The air tightness testing system for a rubber tire according to claim 7, characterized in that, The frame (1) is provided with a control unit (15) on one side, including a rotating part and an inflation part. The rotating part is used to drive the support member (3) to rotate during the tire air tightness inspection process, and the inflation part is used to inflate the tire through the inflation pipe inside the support member (3).

9. The air tightness testing system for rubber tires according to claim 1, characterized in that, Push rods (13) are hinged at both ends of the rotating roller (4) to drive the rotating roller (4) to move up and down to simulate the tire load driving situation. A drive rod (14) is provided below the water tank (2) to drive the water tank (2) to move up and down as a whole. Multiple drain pipes (16) are provided below the water tank (2) to replace the detection liquid inside the detection area (8) and the cleaning liquid inside the cleaning area (9).

10. A method for testing the air tightness of a rubber tire, comprising using the air tightness testing system for a rubber tire as described in claim 6 to perform air tightness testing on the tire, characterized in that, The detection method includes the following steps: S1. After the support (3) clamps the tire, it moves the tire to the top of the cleaning area (9). The water tank (2) rises, and the support (3) drives the tire to rotate, using the cleaning fluid to pre-clean the tire surface. S2. After cleaning, the water tank (2) descends, the support (3) drives the tire to move and rotate, the cleaning part (11) elastically wraps the tire, and the cleaning part (11) wipes away the cleaning fluid remaining on the tire surface. S3, the support (3) drives the tire into the detection zone (8), the rotating roller (4) moves up and down to simulate different load states when the tire is driving, the moving plate (5) moves away from the tire and buffers the fluctuation of the detection fluid through the throttle hole (602); at the same time, the sewage discharge component (7) guides the impurities in the clean zone (9) to gather and be discharged. S4. When the tire diameter increases, the moving plate (5) moves to raise the liquid level in the detection area (8), so that the liquid level in the detection area (8) is always higher than the lower half of the tire. S5. If a risk of tire bursting is detected, the support (3) moves to both sides, the moving plate (5) moves towards each other and raises the liquid level of the detection area (8).

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