Automobile tire air tightness detection device

Abstract

The utility model discloses a car tire air tightness detection device, include: water tank, the side of water tank is provided with support, and support about the vertical central axis of water tank is left and right symmetrical, and the side of support is provided with motor, still include: carousel, the side of carousel is provided with the connecting mechanism for the convenient disassembly maintenance, the outside of carousel is provided with the telescopic mechanism for detecting different model tire. This car tire air tightness detection device, and the mounting bracket is rotated through the hinge with the cover plate, and is fixed with the cooperation bolt, and the polygonal rod positions the tire, and the telescopic mechanism is convenient to disassemble and maintain, and according to the tire time will be closely combined with the arc groove, at this moment, spring pushes the slide bar, drives the limiting rod to combine the inner wall of tire, adapts different model tire, guarantees the stable connection, avoids the slack when detecting, and the slide bar slides in the sliding slot, and spring provides telescopic power, and the anti -drop block avoids the slide bar from the sliding slot and takes out, guarantees the stable operation of telescopic mechanism.

Description

Technical Field

[0001] This utility model relates to the field of air tightness testing technology, specifically to an air tightness testing device for automobile tires. Background Technology

[0002] With the rapid development of the automotive industry, our demand for cars has also increased. During driving, tires are crucial for the vehicle's operation, and their quality directly impacts the safety of ourselves and others. Therefore, tire quality must be strictly controlled. If a tire leaks air, the vehicle may become immobile, or even lose control, leading to a serious traffic accident – ​​a very dangerous situation. Therefore, tire air tightness testing is of paramount importance.

[0003] Referring to Chinese Patent Publication No. CN220960461U, published on May 14, 2024, a device for testing the air tightness of automobile tires is disclosed. A fixed rod is fixedly connected to the top of the rotating base. A first pulley is fixedly connected to one side of the drive motor. A second pulley is fixedly connected to the side of the rotating shaft near the drive motor. A synchronous belt connects the second pulley and the first pulley. A lead screw is rotatably connected inside the water tank. A rotating mechanism is fixedly connected to the lead screw near the drive motor. The threads on both sides of the lead screw have opposite directions. A partition plate that is slidably connected to the water tank is symmetrically threaded on both sides of the lead screw. This utility model has a simple structure, strong applicability, and is worthy of promotion and use.

[0004] However, existing tire air tightness testing devices present significant challenges during tire installation. Mounting the tire to the outside of the axle is inconvenient, greatly increasing the difficulty of tire replacement and requiring additional time and effort. Furthermore, the device's connection stability is poor when testing different tire models, prone to loosening. This not only affects the accuracy of the test data but also disrupts the normal progress of the testing process, hindering efficient and orderly testing. Therefore, further improvements are needed.

[0005] Therefore, we propose a tire air tightness testing device to address the problems mentioned above. Utility Model Content

[0006] The purpose of this invention is to provide a tire air tightness testing device for automobiles, addressing the shortcomings of existing tire air tightness testing devices described in the background. These devices require the tire to be mounted on the outside of the axle during installation, significantly increasing the difficulty of tire replacement and testing, and consuming additional time and effort. Furthermore, when testing different tire models, the device suffers from poor connection stability, easily leading to loose connections. This not only affects the accuracy of the test data but also disrupts the normal progress of the testing process, hindering efficient and orderly testing. Therefore, further improvements are needed.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a vehicle tire air tightness testing device, comprising:

[0008] A water tank, wherein a support is provided on the side of the water tank, and the support is symmetrical about the vertical central axis of the water tank, and a motor is provided on the side of the support;

[0009] Also includes:

[0010] The turntable has a connecting mechanism on its side for easy disassembly and maintenance, and a polygonal rod on its side.

[0011] The turntable is equipped with a telescopic mechanism for detecting different tire models on its outer side, and a support ring is also provided on the outer side of the turntable.

[0012] Preferably, the output shaft of the motor is fixedly connected to the rotating shaft, and the rotating shaft is rotatably connected to the bracket through a bearing. The rotating shaft is also fixedly connected to the connecting rod, and the connecting rod is arranged in an array.

[0013] Preferably, the connecting mechanism is composed of a mounting frame, a connecting groove, a cover plate, bolts, and a polygonal rod. The mounting frame is fixedly connected to the connecting rod, and the mounting frame and the cover plate are rotatably connected by a hinge. A connecting groove is provided on the upper side of the mounting frame.

[0014] Preferably, the connecting groove is located on the lower side of the cover plate, and the cover plate is engaged with the polygonal rod, and both the mounting bracket and the cover plate are threadedly connected with bolts.

[0015] Preferably, the telescopic mechanism is composed of a slide groove, a slide rod, an arc groove, a spring, a limiting rod, and an anti-detachment block. The slide groove is formed inside the support ring and is distributed in an array. The slide groove is slidably connected to the slide rod and the limiting rod.

[0016] Preferably, one end of the slide rod is fixedly connected to the arc-shaped groove, and a spring is provided on the outside of the slide rod, and the other end of the slide rod is fixedly connected to the anti-detachment block.

[0017] Preferably, one end of the limiting rod is fixedly connected to the arc-shaped groove, and the other end of the limiting rod is fixedly connected to the anti-detachment block.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: The mounting bracket and cover plate of this automobile tire air tightness testing device are rotated by hinges and fixed with bolts. The polygonal rod positions the tire, which facilitates the disassembly and maintenance of the telescopic mechanism. When the tire is installed, it will fit tightly with the arc groove. At this time, the spring pushes the slide rod, which drives the limit rod to fit against the inner wall of the tire. It is suitable for different tire models, ensures stable connection, and avoids loosening during testing. The slide rod slides in the groove, and the spring provides the telescopic power. The anti-detachment block prevents the slide rod from falling out of the groove, ensuring the stable operation of the telescopic mechanism.

[0019] 1. The device is equipped with a water tank, a bracket, and a support ring. The water tank provides the water environment required for testing, the bracket supports the motor and the rotating shaft, and the support ring provides the mounting base for the telescopic mechanism, ensuring the overall stability of the device.

[0020] 2. It is equipped with a motor, a rotating shaft and a turntable. The motor drives the rotating shaft to rotate, and the power is transmitted through the connecting rod, so that the turntable drives the tire to rotate synchronously, which makes it easy to observe the tire's air leakage in water;

[0021] 3. It is equipped with a mounting bracket, a cover plate, and a polygonal rod. The mounting bracket and the cover plate rotate via hinges and are fixed with bolts. The polygonal rod positions the tires, which facilitates the disassembly and maintenance of the telescopic mechanism and reduces replacement time.

[0022] 4. It is equipped with a support ring, an arc groove and a limiting rod. When the tire is installed, it will fit tightly with the arc groove. At this time, the spring pushes the slide rod, which drives the limiting rod to fit the inner wall of the tire. It can adapt to different tire models, ensure stable connection and avoid loosening during testing.

[0023] 5. It is equipped with a sliding rod, a spring, and an anti-detachment block. The sliding rod slides in the groove, the spring provides the extension and retraction power, and the anti-detachment block prevents the sliding rod from coming out of the groove, ensuring the stable operation of the telescopic mechanism. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the rear view structure of this utility model;

[0025] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0026] Figure 3 This is an exploded view of the connecting rod and arc-shaped groove of this utility model;

[0027] Figure 4 This is an exploded view of the connecting groove and polygonal rod of this utility model;

[0028] Figure 5This is an exploded view of the slide groove and slide bar of this utility model;

[0029] Figure 6 This is a schematic diagram of the connection structure between the support ring and the slide bar of this utility model.

[0030] In the diagram: 1. Water tank; 2. Bracket; 3. Motor; 4. Rotating shaft; 5. Connecting rod; 6. Mounting bracket; 7. Connecting groove; 8. Cover plate; 9. Bolt; 10. Polygonal rod; 11. Turntable; 12. Support ring; 13. Slide groove; 14. Slide rod; 15. Arc groove; 16. Spring; 17. Limiting rod; 18. Anti-detachment block. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figures 1-6 As shown, this utility model provides a technical solution: an automobile tire air tightness testing device, including: a water tank 1, a bracket 2, a motor 3, a rotating shaft 4, a connecting rod 5, a mounting bracket 6, a connecting groove 7, a cover plate 8, a bolt 9, a polygonal rod 10, a turntable 11, a support ring 12, a sliding groove 13, a sliding rod 14, an arc groove 15, a spring 16, a limiting rod 17, and an anti-detachment block 18.

[0033] Existing tire air tightness testing devices present significant challenges during tire installation. The requirement to mount the tire to the outside of the axle makes this process inconvenient, greatly increasing the difficulty of tire replacement and requiring additional time and effort. Furthermore, the device suffers from poor connection stability when testing different tire models, prone to loosening. This not only affects the accuracy of the test data but also disrupts the normal progress of the testing process, hindering efficient and orderly testing. Therefore, further improvements are needed.

[0034] like Figure 1 , Figure 4 , Figure 5 and Figure 6As shown, the tire is slowly pushed forward. During this process, the inner wall of the tire first contacts the arc-shaped groove 15. As the tire continues to move forward, the inner wall of the tire exerts a radial squeezing force on the arc-shaped groove 15. After the arc-shaped groove 15 is subjected to force, it will simultaneously push the slide rod 14 fixed to it, causing the slide rod 14 to slide outward along the pre-set slide groove 13 inside the support ring 12. When the slide rod 14 slides, the spring 16 sleeved on its outer side will be compressed. The spring 16 generates a reverse elastic force due to deformation. This elastic force is transmitted to the arc-shaped groove 15 through the slide rod 14, so that the arc-shaped groove 15 always fits tightly against the inner wall of the tire, realizing adaptive support for tires of different inner diameter models and avoiding tire shaking during the installation stage. The limiting rod 17 plays a limiting role to prevent the arc-shaped groove 15 from rotating.

[0035] like Figure 1 , Figure 3 and Figure 4 As shown, after the tire is installed and fixed, the air tightness test process is started. Clean water is injected into the water tank 1. During the injection process, the water level scale line on the side wall of the water tank 1 needs to be observed to ensure that the water level can completely submerge the tire to be tested. The motor 3 fixed on the side of the bracket 2 is started. After the motor 3 is powered on, the output shaft drives the rotating shaft 4 fixed to it to rotate. Since the rotating shaft 4 and the bracket 2 are connected by bearings, the bearings can reduce the frictional resistance of the rotating shaft 4 and ensure smooth rotation. Connecting rods 5 are distributed in an array on the outer side of the rotating shaft 4. The rotating shaft 4 drives the turntable 11 to rotate through the connecting rods 5.

[0036] The inspector stands on the side of water tank 1, keeping their line of sight level with the water level, and observes whether air bubbles are generated on the surface of the tire during rotation. If there is a leak in the tire, the air bubbles will float to the surface with the water flow, and the leak point can be marked according to the location of the air bubbles. If no air bubbles are generated after the tire rotates once, it means that the tire's air tightness meets the standard.

[0037] like Figure 2 , Figure 4 , Figure 6 As shown, when problems such as jamming of the slide rod 14, failure of the spring 16, or wear of the limit rod 17 occur after long-term use of the telescopic mechanism, it is necessary to repair the telescopic mechanism by disassembling the connecting mechanism. First, turn off the motor 3. If the tire is still in the water tank 1, it needs to be removed from the water and placed on a dry platform. Use a wrench to unscrew the bolt 9 in the connecting groove 7, separate the bolt 9 from the nut, and store it properly. Then, flip the cover plate 8 upward around the hinge to fully expose the space between the mounting bracket 6 and the turntable 11. At this time, the slide groove 13, slide rod 14, and other components of the telescopic mechanism can be directly observed.

[0038] If the slide bar 14 gets stuck, first check if there are any foreign objects or rust inside the slide groove 13. After cleaning the foreign objects with a brush, apply lubricating oil to the slide groove 13. Use water-resistant lubricating oil to avoid contaminating the water quality of the water tank 1 during subsequent testing. Push the slide bar 14 to test the smoothness of sliding.

[0039] If the spring 16 fails, the limiting rod 17 will not fit tightly against the inner wall of the tire. First, the anti-slip block 18 needs to be removed from the end of the slide rod 14. The anti-slip block 18 is connected to the slide rod 14 by threads. Then, the slide rod 14 is pulled out of the slide groove 13. After replacing the spring 16 with the same model, the slide rod 14 is reinserted into the slide groove 13. Finally, the anti-slip block 18 is installed. In addition, the diameter of the anti-slip block 18 must be larger than the opening diameter of the slide groove 13 to prevent the slide rod 14 from coming off.

[0040] After the telescopic mechanism is repaired, rotate the cover plate 8 in the opposite direction around the hinge to close it with the mounting bracket 6. Align the connecting groove 7, insert the bolt 9 and tighten it to complete the resetting of the connecting mechanism. The device can then be put back into use. By disassembling the connecting mechanism, the telescopic mechanism is directly exposed, eliminating the need to disassemble the turntable 11 or the support ring 12, which greatly reduces the difficulty and time of maintenance.

[0041] like Figure 1 and Figure 3 As shown, after a single tire inspection is completed, the tire needs to be disassembled for the next inspection. Turn off motor 3 and wait until the tire has completely stopped rotating. Use a hook to remove the tire from the water tank 1 and drain the water from the tire surface. Place the tire on a workbench with an anti-slip mat to prevent it from rolling. Hold both sides of the tire with both hands and pull the tire away from the turntable 11 to disengage the tire's center mounting hole from the polygonal rod 10. If the tire is too tightly attached to the limiting rod 17, gently shake the tire or push the limiting rod 17 to help it disengage, avoiding forcibly pulling and damaging the tire or the limiting rod 17. After disassembly, store the tires separately. If a tire is defective, mark it separately and record the location of the leak for later repair.

[0042] The contents not described in detail in this specification are existing technologies known to those skilled in the art. All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0043] 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 device for testing the air tightness of automobile tires, comprising: Water tank (1), a support (2) is provided on the side of the water tank (1), and the support (2) is symmetrical about the vertical central axis of the water tank (1), and a motor (3) is provided on the side of the support (2). Its characteristic is that it further includes: Turntable (11), the side of the turntable (11) is provided with a connecting mechanism for easy disassembly and maintenance, and the side of the turntable (11) is provided with a polygonal rod (10). The turntable (11) is provided with a telescopic mechanism for detecting different types of tires on its outer side, and a support ring (12) is provided on the outer side of the turntable (11).

2. The vehicle tire air tightness testing device according to claim 1, characterized in that: The output shaft of the motor (3) is fixedly connected to the rotating shaft (4), and the rotating shaft (4) is rotatably connected to the bracket (2) through a bearing. The rotating shaft (4) is fixedly connected to the connecting rod (5), and the connecting rod (5) is distributed in an array.

3. The vehicle tire air tightness testing device according to claim 1, characterized in that: The connecting mechanism is composed of a mounting frame (6), a connecting groove (7), a cover plate (8), bolts (9) and a polygonal rod (10). The mounting frame (6) is fixedly connected to the connecting rod (5), and the mounting frame (6) is rotatably connected to the cover plate (8) by a hinge. The upper side of the mounting frame (6) is provided with a connecting groove (7).

4. The automobile tire air tightness testing device according to claim 3, characterized in that: The connecting groove (7) is opened on the lower side of the cover plate (8), and the cover plate (8) is engaged with the polygonal rod (10), and the mounting bracket (6) and the cover plate (8) are both threadedly connected to the bolt (9).

5. The vehicle tire air tightness testing device according to claim 1, characterized in that: The telescopic mechanism is composed of a slide groove (13), a slide rod (14), an arc groove (15), a spring (16), a limiting rod (17), and an anti-detachment block (18). The slide groove (13) is opened inside the support ring (12), and the slide groove (13) is distributed in an array. The slide groove (13) is slidably connected to the slide rod (14) and the limiting rod (17).

6. The automobile tire air tightness testing device according to claim 5, characterized in that: One end of the slide rod (14) is fixedly connected to the arc groove (15), and a spring (16) is provided on the outside of the slide rod (14), and the other end of the slide rod (14) is fixedly connected to the anti-detachment block (18).

7. The automobile tire air tightness testing device according to claim 5, characterized in that: One end of the limiting rod (17) is fixedly connected to the arc groove (15), and the other end of the limiting rod (17) is fixedly connected to the anti-detachment block (18).

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