Tire cross section measuring device and method

Abstract

The application belongs to the technical field of tire measurement, and relates to a tire section measurement device and method, which comprises a measurement base, a measurement scanning device and an adjustable rim assembly. The adjustable rim assembly comprises two groups of symmetrically arranged rim module groups. The rim module group comprises rim module one, rim module two, rim module three and rim module four which are connected in sequence. The length of the rim module one and the rim module three can be changed through a motor and an adjusting rod. The rim module one further comprises a magnet and a magnetic force adjusting button which can be fixed to the measurement base through magnetic force connection. The rim module two and the rim module four are both arc surface structures with replaceable radii. The measurement device can be conveniently and quickly adjusted according to the rim parameters to obtain a structure curve accurately matched with the actual rim, realize high-precision measurement of the tire section, and measure the shape performance of different tire sections under different rims on one measurement device, thereby greatly improving the measurement efficiency and precision.

Description

Technical Field

[0001] This invention belongs to the field of tire measurement technology, specifically relating to a tire section measurement device and method. Background Technology

[0002] To better analyze tire performance and manufacturing quality, engineers typically perform high-precision measurements of tire cross-sections. In normal use, tires are fixed to the rim, and when analyzing tire cross-sections, engineers need to simulate the tire's operating conditions as closely as possible. To achieve this, engineers often use constraints to fix the tire's bead position, thus mimicking the tire's shape fixed to the rim. However, this method has many limitations. Due to the wide variety of tire models and the complex and diverse rim shape parameters, simply adding constraints to the bead position is insufficient to describe the shape of different tires fixed to different rims, resulting in significant limitations.

[0003] Currently, there are some relatively mature methods for high-precision measurement of tire cross-sections. For example, Chinese patent CN113375588A discloses an adjustable tire cross-section measurement platform. This platform uses an adjustable mechanical structure to adjust the position of the measuring device, enabling rapid measurement of tire parameters. However, this structure lacks a tire bead fixing device. Chinese patents CN215617495U disclose a tire cross-section limiting clamping device, CN113945163A discloses an inflatable tire cross-section scanning device and method, and CN214892977U discloses a tire cross-section detection device. All three devices can fix the tire bead, but they cannot accurately describe the curves of different tire rims or make precise changes based on different parameters. They also have certain limitations and cannot achieve the goal of high-precision measurement and analysis. Summary of the Invention

[0004] The purpose of this invention is to solve the aforementioned problems in the prior art, and to propose a tire section measurement device and method. The measuring device includes a high-precision adjustable rim module assembly, which contains multiple magnetic metal structures to achieve high-precision description of different rims. Using this measuring device, rim parameters can be easily and quickly adjusted to obtain a structural curve that precisely matches the actual rim, thereby achieving high-precision measurement of the tire section fixed on the rim. It allows for the measurement of the shape of different tire sections under different rims using a single measuring device, significantly improving measurement efficiency and accuracy.

[0005] The technical solution of this invention is:

[0006] A tire section measuring device includes a measuring base, on which a measuring scanning device and an adjustable rim assembly are mounted. The adjustable rim assembly includes two symmetrically arranged rim module groups, each comprising a first rim module, a second rim module, a third rim module, and a fourth rim module connected sequentially. The first rim module includes a first metal plate and a second metal plate, with a motor and an adjusting rod positioned between them. The length of the first rim module is changed by altering the length of the adjusting rod via the motor. A magnet and a magnetic adjustment knob connected to the magnet are also mounted on the first metal plate. The second and fourth rim modules are both arc-shaped structures. The third rim module includes a third metal plate and a fourth metal plate, with a motor and an adjusting rod positioned between them. The length of the third rim module is changed by altering the length of the adjusting rod via the motor.

[0007] Furthermore, both the measuring base and the adjustable rim assembly are made of metal, and the rim modules are magnetically connected.

[0008] The magnetic connection between the various rim modules mentioned above relies on magnetic modules installed on rim module one, rim module two, rim module three, and rim module four respectively. Furthermore, rim module four has a magnetic module on the side that connects to rim module three, and rim module two has magnetic modules on both sides that connect to rim module one and rim module three respectively.

[0009] Furthermore, the magnetic module is a magnet.

[0010] Furthermore, a motor is mounted on the first metal plate, with a first metal block connected to one side of the motor and an adjusting rod connected to the other side, the adjusting rod being connected to a second metal plate; a motor is mounted on the third metal plate, with a third metal plate connected to one side of the motor and an adjusting rod connected to the other side, the adjusting rod being connected to a fourth metal plate.

[0011] Furthermore, based on different rim structures, rim module two and rim module four each include arc surface structures with various degrees of curvature, and the curvature is set according to a rim parameter selection lookup table.

[0012] Furthermore, the measuring base is provided with two grooved tracks, which are symmetrically arranged on both sides of the adjustable rim assembly. The measuring scanning device is installed in the grooved tracks and can slide within the tracks.

[0013] Furthermore, the measuring and scanning device is a frame structure and is mounted above the adjustable rim assembly.

[0014] Furthermore, the measuring and scanning device is a CCD scanner, which operates on the principle of optical imaging.

[0015] The present invention also includes a method of using the above-mentioned tire section measuring device, comprising the following steps:

[0016] (1) Place the first metal plate of the rim module one at the required angle. After placement, adjust the magnetic force by rotating the magnetic force adjustment knob to fix it on the measuring base. Then adjust the motor according to the rim parameters to change the length of the rim module one.

[0017] (2) Select rim module two and rim module four according to the arc parameter in the rim parameters, and connect rim module two and rim module one through the magnetic attraction module;

[0018] (3) Adjust the motor according to the rim parameters to change the length of rim module three, and connect it to rim module two through the magnetic module. Then connect rim module four to rim module three through the magnetic module.

[0019] (4) Place the tire section horizontally on the measuring platform to ensure that it is clear and flat, and then use the assembled adjustable rim assembly to fix the tire section.

[0020] (5) Use a CCD scanner to acquire tire cross-section images.

[0021] In the above-mentioned method of using the measuring device, the tire cross-section can be placed clearly and flatly on the measuring platform first, and then the adjustable rim assembly can be assembled; or the adjustable rim assembly can be assembled first, and then the tire cross-section can be placed on the measuring platform. The order is not limited and can be arranged according to actual needs.

[0022] The beneficial effects of this invention are:

[0023] (1) Compared with existing measurement platforms, the rim structure of this measuring device is completely consistent with the cross-section of the actual rim. It can accurately characterize the shape of the tire when it is fixed on the actual rim, thereby obtaining a more accurate actual tire shape diagram, which facilitates the mapping of the tire cross section and thus better analyzes the tire manufacturing process and tire performance level.

[0024] (2) The rim adjustment assembly selected in this device consists of two rim module groups. Each rim module group contains four rim modules. Modules one and three can adjust the length and angle, while modules two and four can be selected with appropriate curvature. These four modules can be used to construct various rims, which is convenient for adjusting the rim structure and saves resources. It also allows for convenient and quick sampling of the same tire under different rim structures.

[0025] (3) The tire section measuring device provided by the present invention connects the rim module to the metal surface of the measuring base by magnetic force, which can quickly adjust the position of the rim module and accurately fix it to reduce errors; each rim module is also fixed by magnetic force, which is convenient for disassembly and assembly.

[0026] (4) This measuring device achieves high-precision matching of the rim structure curve through modular structural composition, thereby enabling high-precision measurement of the tire section fixed on the rim, which is conducive to its widespread use in the tire industry; this measuring device samples from above, and the measuring scanning device is fixed on the slide rail to ensure high precision of sampling and mapping. Attached Figure Description

[0027] Figure 1 The present invention provides a tire section measuring device with a pre-placed tire section.

[0028] Figure 2 A schematic diagram of the tire section measuring device provided by the present invention;

[0029] Figure 3 This is a structural schematic diagram of the rim module assembly;

[0030] Figure 4 This is a structural schematic diagram of the replaceable rim module two and rim module four;

[0031] In the above figures, 1. Measuring base; 2. Track; 3. Measuring scanning device; 4. Rim module one; 41. First metal plate; 42. Second metal plate; 43. Magnetic adjustment knob; 5. Rim module two; 6. Rim module three; 61. Third metal plate; 62. Fourth metal plate; 7. Rim module four; 8. Motor; 9. Adjusting rod; 10. Magnetic module; 11. Tire cross-section. Detailed Implementation

[0032] To further understand the present invention, the following description, in conjunction with the embodiments and accompanying drawings, will provide a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are merely 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.

[0033] like Figure 1 and 2As shown, the present invention provides a tire section measuring device, including a measuring base 1, a measuring scanning device 3 and an adjustable rim assembly on the measuring base 1, the adjustable rim assembly including two symmetrically arranged rim module groups, the rim module groups including rim module one 4, rim module two 5, rim module three 6 and rim module four 7 connected in sequence.

[0034] The aforementioned measuring device can select a modular rim structure according to different design schemes and rim matching requirements, adjust the modular rims to the expected values, and then fix them together magnetically before uniformly fixing them onto the measuring base 1. When using the device, the tire section 11 is positioned in the middle of the assembled and fixed rim structure, simulating the normal working condition of the tire mounted on the rim. Then, the measuring scanning device 3 above the measuring base 1 acquires an image of the tire section 11.

[0035] When it is necessary to simulate the shape of the tire under different rims, the rim parameters are found, and the tire section 11 is quickly reconstrained and images are acquired by adjusting the modular rim structure parameters.

[0036] like Figure 3 The diagram shows the structure of one of the rim module groups constituting the adjustable rim assembly in this measuring device. Rim module 4 represents the inclined surface of a real rim, which includes two parameters: the inclination angle and the length. The inclination angle is adjusted by changing the placement orientation of rim module 4, and the length is changed by the motor 8 and adjusting rod 9 within rim module 4. In the diagram, rim module 4 includes a first metal plate 41 and a second metal plate 42. A motor 8 is mounted on the first metal plate 41, with one side of the motor 8 connected to a first metal block and the other side connected to the adjusting rod 9. A battery is also installed within rim module 4, connected to the motor 8 to supply power. When the length is changed, the motor 8 is activated, causing the adjusting rod 9 to extend or shorten. The other end of the adjusting rod 9 is connected to the second metal plate 42, thus allowing the length of rim module 4 to be changed by altering the length of the adjusting rod 9 via the motor 8. This structural design allows the length of rim module 4 to be conveniently adjusted to the desired range.

[0037] It should be noted that the rim module 4 also includes a magnetic adjustment knob 43 and a magnet attached to it. Specifically, the first metal plate 41 is provided with a magnet and a magnetic adjustment knob 43 connected to the magnet, relying on magnetic force to fix the rim module assembly to the measuring base 1. To achieve the purpose of magnetic fixation, it can be understood that both the measuring base 1 and the adjustable rim assembly (including two symmetrically arranged rim module assemblies) are made of metal. When the magnetic adjustment knob 43 is parallel to the metal measuring base 1, the magnet is far away from the measuring base 1, and the entire rim module assembly loses its magnetism and cannot generate the force to fix the metal structure. At this time, the position of each rim module can be freely adjusted. When the magnetic adjustment knob 43 is perpendicular to the measuring base 1, the magnet on either side is close to the measuring base 1, generating magnetic force, so that the rim module 4 can be fixed on the metal measuring base 1.

[0038] Meanwhile, the various rim modules are magnetically connected. Magnetic modules (magnets) are installed on rim module 1 (4), rim module 2 (5), rim module 3 (6), and rim module 4 (7), enabling adjacent rim modules to be connected and fixed. After rim module 1 (4) is fixed to the measuring base 1, it ensures that rim modules 2 (5), rim module 3 (6), and rim module 4 (7) are also fixed to the measuring base 1.

[0039] like Figure 4 As shown, both rim module 2 (5) and rim module 4 (7) are curved surface structures. Rim module 2 (5) is a metal curved surface structure adjacent to rim module 1 (4), and they are magnetically connected. The curvature of the surface varies in different rim structures. Therefore, to correspond to different rim parameters, rim module 2 (5) includes curved surface structures with various curvatures, which can be freely selected for replacement. Parameters from a lookup table can be selected based on the rim parameters to pre-manufacture rim modules 2 (5) with different curvatures to match different rims. In actual measurement applications, a suitable rim module 2 (5) with appropriate curvature can be selected for replacement as needed. Rim module 4 (7) is similar to rim module 2 (5), also being a metal curved surface structure with a certain curvature. Rim module 4 (7) also includes curved surface structures with various curvatures, which are set according to the rim parameter selection lookup table. In practical applications, rim module 4 (7), like rim module 2 (5), can be replaced with pre-made metal curved surface structures of different curvatures.

[0040] In this specific embodiment, rim module three 6 is identical to rim module one 4, serving to connect two curved metal sections (rim module two 5 and rim module four 7), and its length is adjustable. Rim module three 6 includes a third metal plate 61 and a fourth metal plate 62. A motor 8 is mounted on the third metal plate 61. One side of the motor 8 is connected to the third metal plate 61, and the other side is connected to an adjusting rod 9. The adjusting rod 9 is connected to the fourth metal plate 62. The length of the adjusting rod 9 can be changed by the operation of the motor 8, thereby changing the length of rim module three 6 until it meets the rim parameter requirements.

[0041] In the aforementioned rim modules, rim modules 1 (4 and 3) have adjustable lengths, while rim modules 2 (5 and 4) can be replaced with structures of different curvatures. The various rim modules are connected by magnetic forces generated by magnetic modules to ensure their fixation. Figure 4 As can be seen above, a magnetic module 10 is provided on the side of rim module four 7 that connects to rim module three 6. This magnetic module 10 can be a magnet, which uses the magnetic force to fix adjacent modules together. Similarly, magnetic modules 10 are provided on both sides of rim module two 5 that connect to rim module one 4 and rim module three 6, respectively. It should be noted that the purpose of providing magnetic modules on the rim modules is to connect and fix the four rim modules together. Therefore, their installation position and number can be set according to actual needs, as long as the purpose is achieved.

[0042] like Figure 1 As shown, the measuring scanning device 3 is positioned above the measuring base 1 of the metal structure. Two grooved tracks 2 are provided on the measuring base 1, symmetrically arranged on both sides of the adjustable rim assembly. The measuring scanning device 3 is installed within the grooved tracks 2 and can slide within them. In this specific embodiment, the measuring base 1 is used to place the tire section 11 and the adjustable rim assembly, fixing the tire section 11 with the adjustable rim assembly. The two tracks 2 are located on both sides of the tire section 11. The measuring scanning device 3 is a frame structure, installed above the tire section 11 and the adjustable rim assembly, and slidably connected to the two tracks 2. Thus, the measuring scanning device 3 can slide within the tracks 2, scanning from an angle located above and perpendicular to the tire section 11 to ensure image quality. Furthermore, the measuring scanning device 3 can employ a CCD scanner, with the CCD scanner built into the measuring scanning device 3 to scan and acquire images of the tire section 11.

[0043] The method of using the tire section measuring device of the present invention is as follows:

[0044] In a specific application scenario, two wheel rim specifications are used: 8J type and 7K type. Referring to the wheel rim parameter selection table, the parameters for Wheel Rim Module 1 (4), Wheel Rim Module 2 (5), Wheel Rim Module 3 (6), and Wheel Rim Module 4 (7) for both the 8J and 7K types are shown in Table 1 below.

[0045] Table 1. Wheel Rim Parameter Selection Comparison Table

[0046]

[0047] The specific measurement steps are as follows:

[0048] (1) First, cut the tire section 11 clearly and flat, and place it on the measuring base 1. Ensure that the tire section 11 is placed in a scientific and reasonable position. You can make appropriate marks on the measuring base 1 based on experience, and place the measuring scanning device 3 at a suitable position above the track 2.

[0049] (2) According to the parameters of the 8J type rim in Table 1, the first metal plate 41 of the rim module 4 is placed at an angle of 5° with the edge of the measuring base 1. After it is placed, rotate the magnetic adjustment knob 43 to fix it on the measuring base 1. Then adjust the motor 8 so that the length of the rim module 4 is greater than 19.5mm.

[0050] (3) Select rim module 2 5 with a maximum R angle of 6.5mm and rim module 4 7 with a minimum R angle of 9.5mm, and connect rim module 2 5 and rim module 1 4 together by magnets;

[0051] (4) Adjust the motor 8 on the rim module 3 6 so that the length of the rim module 3 6 is between 16.5mm and 18.5mm. Then connect it to the rim module 2 5 with a magnet. Then connect the rim module 4 7 to the rim module 3 6 to obtain the adjustable rim assembly fixed on the measuring base 1.

[0052] (5) Fix the tire section with the assembled adjustable rim assembly, and then start the CCD scanner to acquire the tire section 11 and obtain a complete scan image of the tire section 11.

[0053] If it is necessary to analyze the stress on the same tire section 11 under different rim fixation conditions, then consult the rim parameter selection table again. For example, when it is necessary to replace it with the 7K type rim in Table 1, adjust the length of rim module 1 4 to be greater than 20mm according to the parameters, select the replaceable rim module 2 5 with a radius of 6.5mm, then adjust the length of rim module 3 6 to 20.5mm, select the replaceable rim module 4 7 with a radius of 10.5mm, and repeat the above measurement steps.

[0054] The above description is merely a preferred embodiment of the present invention and is not intended to limit the 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, alterations, 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 tire section measuring device, characterized in that, The device includes a measuring base, on which a measuring scanning device and an adjustable rim assembly are mounted. The adjustable rim assembly includes two symmetrically arranged rim module groups, each comprising rim module one, rim module two, rim module three, and rim module four connected in sequence. Rim module one includes a first metal plate and a second metal plate, with a motor and an adjusting rod positioned between them. The length of rim module one is changed by altering the length of the adjusting rod via the motor. The first metal plate also has a magnet and a magnetic adjustment knob connected to the magnet. Rim module two and rim module four are both arc-shaped structures. Rim module three includes a third metal plate and a fourth metal plate, with a motor and an adjusting rod positioned between them. The length of rim module three is changed by altering the length of the adjusting rod via the motor.

2. The tire section measuring device according to claim 1, characterized in that, Both the measuring base and the adjustable rim assembly are made of metal, and the rim modules are magnetically connected.

3. The tire section measuring device according to claim 2, characterized in that, A magnetic attraction module is provided on the side of the rim module four that connects with the rim module three. Magnetic attraction modules are also provided on the two sides of the rim module two that connect with the rim module one and the rim module three, respectively.

4. The tire section measuring device according to claim 3, characterized in that, The magnetic module is a magnet.

5. The tire section measuring device according to claim 1, characterized in that, A motor is mounted on the first metal plate, with a first metal block connected to one side of the motor and an adjusting rod connected to the other side. The adjusting rod is connected to a second metal plate. A motor is mounted on the third metal plate, with a third metal plate connected to one side of the motor and an adjusting rod connected to the other side. The adjusting rod is connected to a fourth metal plate.

6. The tire section measuring device according to claim 1, characterized in that, Based on different rim structures, rim module two and rim module four each include arc surface structures with various degrees of curvature, and the curvature is set according to the rim parameter selection lookup table.

7. The tire section measuring device according to claim 1, characterized in that, The measuring base is provided with two grooved tracks, which are symmetrically arranged on both sides of the adjustable rim assembly. The measuring scanning device is installed in the grooved tracks and can slide within the tracks.

8. The tire section measuring device according to claim 1, characterized in that, The measuring and scanning device is a frame structure and is mounted above the adjustable rim assembly.

9. The tire section measuring device according to claim 1, characterized in that, The measuring and scanning device is a CCD scanner.

10. The method of using the tire section measuring device according to any one of claims 1-9, characterized in that, Includes the following steps: (1) Place the first metal plate of the rim module one at the required angle. After placement, adjust the magnetic force by rotating the magnetic force adjustment knob to fix it on the measuring base. Then adjust the motor according to the rim parameters to change the length of the rim module one. (2) Select rim module two and rim module four according to the arc parameter in the rim parameters, and connect rim module two and rim module one through the magnetic attraction module; (3) Adjust the motor according to the rim parameters to change the length of rim module three, and connect it to rim module two through the magnetic module. Then connect rim module four to rim module three through the magnetic module. (4) Place the tire section horizontally on the measuring platform to ensure that it is clear and flat, and then use the assembled adjustable rim assembly to fix the tire section. (5) Use a CCD scanner to acquire tire cross-section images.

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