A vacuum tire air tightness testing device

Abstract

This utility model discloses a vacuum tire air tightness testing device, including a gantry frame, a transverse frame, a support plate, a clamping plate, and a clamping drive device. The two ends of the transverse frame are fixedly connected to the vertical beams on both sides of the gantry frame. The support plate is positioned upwards on the upper part of the transverse frame, and an air supply component is located at the bottom of the support plate, connected to the air supply pipe of a high-pressure air supply system. The clamping plate is movably positioned above the support plate. The clamping drive device is fixedly located on one side of the gantry frame's transverse beam above the support plate, with its drive rod pointing downwards. The clamping drive device is hinged to the clamping plate via a guide rod. One end of the guide rod is hinged to the middle of the guide rod, and the other end of the connecting rod is fixedly connected to the gantry frame. The clamping plate and the support plate are coaxial. This utility model allows selection of the support plate and clamping plate according to the vacuum tire parameters, and can also adjust the spacing to adapt to tires of different widths. It is easy to operate, enhances the versatility and flexibility of the testing, and improves testing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of tire testing technology, and more specifically to a vacuum tire air tightness testing device that is simple in structure, safe and convenient, has high testing accuracy and efficiency, and requires little labor intensity. Background Technology

[0002] In both motor vehicle and non-motor vehicle sectors, tires are critical components, and their quality directly affects vehicle driving safety and performance stability. Among these, tire air tightness is a crucial indicator for ensuring normal tire use. Poor air tightness leads to a drop in tire pressure, which in turn affects vehicle handling, fuel economy, and may even cause serious safety accidents such as tire blowouts. Therefore, accurate and efficient tire air tightness testing is essential, especially for widely used tubeless tires. Currently, traditional tire air tightness testing methods have many drawbacks and are insufficient to meet the efficiency and accuracy requirements of modern production.

[0003] A common method involves placing the tire in a container filled with water and rotating it manually or mechanically. The presence of air bubbles is then visually inspected or captured by a camera to determine and mark any leaks. However, this method is not only labor-intensive but also complex and cumbersome. In practice, visual inspection is susceptible to human error, potentially leading to missed leaks. Furthermore, camera footage can be affected by factors such as lighting, angle, and water quality, resulting in inaccurate assessments and compromising the reliability of the results.

[0004] Another traditional testing method involves directly detecting changes in tire internal pressure using a pressure gauge, or indirectly detecting tire air tightness using pressure and temperature sensors, microphones, and other equipment through signal processing circuits. However, these methods also have significant drawbacks. They typically only allow testing one tire at a time, resulting in low testing efficiency. Especially when tire inflation time is limited, it is difficult to comprehensively and accurately detect localized strength reductions caused by defects such as porosity, pinholes, and inclusions. This makes it impossible to accurately determine whether the tire strength meets standards, posing a potential safety hazard to motor vehicles.

[0005] Existing testing methods for tubeless tires face even greater challenges. Tubeless tires, with their unique structural advantages such as excellent heat dissipation, long lifespan, and high safety, are widely used in both motor vehicles and non-motorized vehicles. However, testing requires manual sealing and inflation of the tire's inner side. This process significantly increases the workload of testing personnel, and the sealing operation is cumbersome and complex, further reducing overall testing efficiency. Furthermore, the sealing effect of manual sealing is difficult to guarantee, potentially leading to incomplete seals and affecting the accuracy of test results, thus failing to provide a reliable basis for tire quality control.

[0006] In summary, existing tire air tightness testing methods have significant shortcomings in terms of efficiency, accuracy, and convenience for testing tubeless tires, making it difficult to meet the needs of modern tire production and quality inspection. Therefore, developing a high-efficiency, accurate air tightness testing device suitable for tubeless tires is of significant practical importance. Utility Model Content

[0007] The purpose of this invention is to provide a vacuum tire air tightness testing device that is simple in structure, safe and convenient, has high testing accuracy and efficiency, and low labor intensity, so as to solve the problems existing in the above-mentioned background technology.

[0008] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: A vacuum tire air tightness testing device includes a gantry support, a transverse support, a support plate, a clamping plate, and a clamping drive device. The two ends of the transverse support are fixedly connected to the vertical beams on both sides of the gantry support. The support plate is positioned upwards on the upper part of the transverse support. An air supply assembly is located at the bottom of the support plate and is connected to the air supply pipe of a high-pressure air supply system. The clamping plate is movably positioned above the support plate. The clamping drive device is fixedly mounted on one side of the gantry support beam above the support plate, with its drive rod pointing downwards. The clamping drive device is hinged to the clamping plate via a guide rod. One end of the guide rod is hinged to the middle of the guide rod, and the other end of the connecting rod is fixedly connected to the gantry support. The clamping plate and the support plate are coaxial.

[0009] The gas supply assembly includes a gas supply pipe that is connected to the bottom of the support plate. A gas supply head is rotatably connected to the bottom of the gas supply pipe and is connected to the gas transmission pipe of the high-pressure gas supply system.

[0010] Furthermore, a fixing plate is fixed to one side of the top of the gantry bracket, a slider is fixed to the fixing plate, a push rod is slidably connected to the slider, one end of the push rod is fixedly connected to the clamping plate, and the other end is hinged to the guide rod.

[0011] Furthermore, the bottom of the gas supply pipe is threaded with a mounting bracket, which is fixedly connected to the horizontal support.

[0012] Furthermore, the bottom of the vertical beams on both sides of the gantry bracket is provided with an installation port one, and the bottom of the mounting frame is provided with an installation port two. The gas supply pipe passes through the installation port one and the installation port two and is connected to the gas supply head.

[0013] Furthermore, the top of the support plate and / or the bottom of the clamping plate are provided with at least one tire shaping groove of different diameters.

[0014] Furthermore, the other end of the connecting rod is fixedly connected to the gantry bracket via a fixing plate.

[0015] Furthermore, a fixing ring is fixedly connected to the outside of the air supply pipe, and rotating rods are symmetrically arranged on the outside of the fixing ring.

[0016] This utility model has the following beneficial effects: (1) According to the structure, specifications and other parameters of the vacuum tire to be tested, the present invention can select the corresponding support plate and clamping plate and fix them. It can also adjust the air supply pipe by rotating the rotating rod, thereby adjusting the minimum distance between the support plate and the clamping plate to accurately adapt to tires of different widths, thereby enhancing the versatility and flexibility of the test and improving the test efficiency.

[0017] (2) After the tire is positioned, the switch is turned on. The clamping plate clamps the tire under the clamping drive device. Then, compressed air of a predetermined pressure is automatically filled and the pressure is maintained. The operator only needs to check the pressure gauge and make a simple touch judgment to find the leaking part and directly and accurately draw conclusions on the tire strength and sealing performance. The operation is simple and the test results are reliable.

[0018] (3) This utility model can be equipped with multiple sets of testing devices on the gantry support, and one person can complete the strength and air tightness testing of multiple tires at the same time, which significantly improves the testing efficiency, effectively increases the overall production capacity, and reduces labor and time costs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the structure of this utility model when multiple parallel configurations are used; In the diagram, 1-Gantry support, 2-Horizontal support, 3-Support plate, 4-Clamping plate, 5-Clamping drive device, 6-Vertical beam, 7-Air supply pipe, 8-Rotating rod, 9-Guide rod, 10-Connecting rod, 11-Air supply pipe, 12-Air supply head, 13-Fixing plate, 14-Slider, 15-Mounting bracket, 16-Mounting port one, 17-Mounting port two, 18-Fixing ring. Detailed Implementation

[0020] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0021] A vacuum tire air tightness testing device, as shown in the attached document. Figure 1-3As shown, the system includes a gantry support 1, a horizontal support 2, a support plate 3, a clamping plate 4, and a clamping drive device 5. The two ends of the horizontal support 2 are fixedly connected to the two vertical beams 6 on both sides of the gantry support 1. The support plate 3 is positioned upwards on the upper part of the horizontal support 2. An air supply component is provided at the bottom of the support plate 3, and the air supply component is connected to the air supply pipe 7 of the high-pressure air supply system. The clamping plate 4 is movably positioned above the support plate 3. The clamping drive device 5 is fixedly installed on one side of the horizontal beam of the gantry support 1 on the upper part of the support plate 3, with the drive rod pointing downwards. The clamping drive device 5 is hinged to the clamping plate 4 through a guide rod 9. One end of a connecting rod 10 is hinged to the middle of the guide rod 9, and the other end of the connecting rod 10 is fixedly connected to the gantry support 1. The clamping plate 4 and the support plate 3 are coaxial.

[0022] The gas supply assembly includes a gas supply pipe 11, which is connected to the bottom of the support plate 3. A gas supply head 12 is rotatably connected to the bottom of the gas supply pipe 11, and the gas supply head 12 is connected to the gas transmission pipe 7 of the high-pressure gas supply system.

[0023] A fixing plate 13 is fixed to one side of the top of the gantry bracket 1. A slider 14 is fixed to the fixing plate 13. A push rod is slidably connected to the slider 14. One end of the push rod is fixedly connected to the clamping plate 4, and the other end is hinged to the guide rod 9.

[0024] The bottom of the air supply pipe 11 is threaded with a mounting bracket 15, which is fixedly connected to the horizontal support 2.

[0025] The bottom of the vertical beams 6 on both sides of the gantry support 1 is provided with an installation port 16, and the bottom of the mounting frame 15 is provided with an installation port 17. The gas supply pipe 7 passes through the installation port 16 and the installation port 17 and is connected to the gas supply head 12.

[0026] The top of the support plate 3 and / or the bottom of the clamping plate 4 are provided with at least one tire shaping groove of different diameters.

[0027] The other end of the connecting rod 10 is fixedly connected to the gantry bracket 1 via a fixing plate 13.

[0028] A fixing ring 18 is fixedly connected to the outside of the air supply pipe 11, and rotating rods 8 are symmetrically arranged on the outside of the fixing ring 18.

[0029] The working process of this utility model is as follows: Before operation, select and fix the corresponding support plate 3 and clamping plate 4 according to the structure, specifications, and other parameters of the tubeless tire to be tested. Then, rotate the rotating rod 8 to adjust the air supply pipe 11, moving it up or down to adjust the minimum distance between the support plate 3 and the clamping plate 4 to match the width of the tire to be tested. During operation, place the tire to be tested on the support plate 3 and position its inner edge either on the tire shaping groove or outside the tire shaping groove. Then, start the switch. The clamping plate 4 moves downward under the drive of the cylinder, clamping the tire to be tested under the combined action of the support plate 3. Subsequently, trigger the air supply pipe 7 to inject compressed air at a predetermined pressure into the closed space inside the tire to be tested through the air supply head 12. Then, stop and maintain the pressure for a period of time. During and after the pressure maintenance, the operator only needs to check the pressure gauge and make simple touch and judgment to find the leak, thus directly and accurately drawing conclusions about the strength and sealing performance of the tire being tested. After the test is completed, the operator turns off the switch, and each mechanism reverses the above process to remove the tested tire and place it in the corresponding position, completing one tire air tightness test. Simultaneously, multiple sets of the above-mentioned testing devices are installed on the gantry support 1, allowing one person to simultaneously complete the strength and air tightness tests of multiple tires, thus significantly improving testing efficiency.

Claims

1. A vacuum tire air tightness testing device, characterized in that, The system includes a gantry support (1), a horizontal support (2), a support plate (3), a clamping plate (4), and a clamping drive device (5). The two ends of the horizontal support (2) are fixedly connected to the two vertical beams (6) on both sides of the gantry support (1). The support plate (3) is set upward on the upper part of the horizontal support (2). The bottom of the support plate (3) is provided with an air supply component. The air supply component is connected to the air supply pipe (7) of the high-pressure air supply system. The clamping plate (4) is movably set above the support plate (3). The clamping drive device (5) is fixedly set on one side of the horizontal beam of the gantry support (1) on the upper part of the support plate (3) and the drive rod is set downward. The clamping drive device (5) is hinged to the clamping plate (4) through a guide rod (9). One end of the connecting rod (10) is hinged in the middle of the guide rod (9). The other end of the connecting rod (10) is fixedly connected to the gantry support (1). The clamping plate (4) and the support plate (3) are coaxial.

2. The vacuum tire air tightness testing device according to claim 1, characterized in that, The gas supply assembly includes a gas supply pipe (11), which is connected to the bottom of the support plate (3). A gas supply head (12) is rotatably connected to the bottom of the gas supply pipe (11), and the gas supply head (12) is connected to the gas transmission pipe (7) of the high-pressure gas supply system.

3. The vacuum tire air tightness testing device according to claim 1, characterized in that, A fixing plate (13) is fixed on one side of the top of the gantry bracket (1). A slider (14) is fixed on the fixing plate (13). A push rod is slidably connected to the slider (14). One end of the push rod is fixedly connected to the clamping plate (4), and the other end is hinged to the guide rod (9).

4. The vacuum tire air tightness testing device according to claim 2, characterized in that, The bottom of the gas supply pipe (11) has a threaded mounting bracket (15), which is fixedly connected to the horizontal support (2).

5. The vacuum tire air tightness testing device according to claim 1, characterized in that, The bottom of the vertical beams (6) on both sides of the gantry bracket (1) is provided with an installation port one (16), and the bottom of the mounting bracket (15) is provided with an installation port two (17). The gas pipe (7) passes through the installation port one (16) and the installation port two (17) and is connected to the gas supply head (12).

6. The vacuum tire air tightness testing device according to claim 1, characterized in that, The top of the support plate (3) and / or the bottom of the clamping plate (4) are provided with at least one tire shaping groove of different diameters.

7. The vacuum tire air tightness testing device according to claim 1, characterized in that, The other end of the connecting rod (10) is fixedly connected to the gantry bracket (1) via a fixing plate (13).

8. The vacuum tire air tightness testing device according to claim 2, characterized in that, A fixing ring (18) is fixedly connected to the outside of the air supply pipe (11), and a rotating rod (8) is symmetrically arranged on the outside of the fixing ring (18).

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