A multifunctional tire testing machine

Abstract

The present application relates to the technical field of tire performance testing, and discloses a multifunctional tire testing machine, which comprises a testing device and a control unit, the testing device is installed on a seat platform, and the seat platform is divided into a loading area and a testing area; the testing device comprises a loading unit, a testing unit and a tire driving unit; the loading unit is arranged in the loading area and is used for applying a load to the tire; the testing unit is arranged in the testing area and is used for performing dynamic footprint testing and containment characteristic testing; the tire driving unit is arranged between the loading area and the testing area and is used for driving the tire to move in the horizontal direction or the vertical direction; and the control unit comprises a control module, a first data acquisition module, a second data acquisition module and a data processing module. The multifunctional tire testing machine can simultaneously realize the functions of dynamic footprint testing and containment characteristic testing, reduces the operation steps and time of tire performance detection, and is convenient and efficient.

Description

Technical Field

[0001] This invention relates to the field of tire performance testing technology, and in particular to a multi-energy tire testing machine. Background Technology

[0002] Tire containment characteristics refer to the tire's ability to filter vertical forces and road unevenness when rolling on uneven surfaces. Tire containment tests characterize tire containment performance by acquiring data such as the radial force exerted on the wheel center by road obstacles. These tests are significant in fields such as automotive vertical vibration, lateral vibration, tire dynamic load analysis, and tire comfort research.

[0003] Dynamic tire footprint testing can obtain real-time tire footprints in dynamic contact with the ground. Changes in aspects such as aspect ratio, land-to-sea ratio, pressure center offset, and contact area within the dynamic footprint can reflect the real-time pressure distribution on the tire, which helps in in-depth research on the relationship between tire footprints and tire structure. However, in existing technologies, containment characteristic testing and dynamic footprint testing are implemented using their respective equipment and devices, which are complex to operate, involve repetitive steps, and are time-consuming.

[0004] Therefore, how to provide a convenient and efficient tire testing machine that can simultaneously perform containment characteristic tests and dynamic imprint tests is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the present invention provides a multifunctional tire testing machine to solve the technical problems that existing containment characteristic tests and dynamic imprint tests can only be performed independently by different equipment, and the operation process is complicated and time-consuming.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A multifunctional tire testing machine includes a testing device and a control unit. The testing device is mounted on a base platform, which is divided into a loading area and a testing area.

[0008] The testing apparatus includes a loading unit, a testing unit, and a tire driving unit; the loading unit is disposed in the loading area and is used to apply load to the tire; the testing unit is disposed in the testing area and is used to perform tire dynamic imprint tests and containment characteristic tests; the tire driving unit is disposed between the loading area and the testing area and is used to drive the tire to move in the horizontal or vertical direction.

[0009] The control unit includes a control module, a first data acquisition module, a second data acquisition module, and a data processing module. The first data acquisition module is connected to the test device and the control module, respectively. The input end of the second data acquisition module is connected to the test device, and the output end is connected to the data processing module, so as to transmit the acquired test data to the data processing module for data processing and to generate results.

[0010] Preferably, in the above-mentioned multifunctional tire testing machine, the loading unit includes a guide column, a loading plate lifting device, and a loading plate;

[0011] The guide column is installed on top of the loading area; the loading plate lifting device is sleeved on the guide column and moves vertically along the guide column; the loading plate is sleeved on the guide column and is located on top of the loading plate lifting device, and the loading plate is driven by the loading plate lifting device to apply load to the tire.

[0012] Preferably, in the above-mentioned multifunctional tire testing machine, the loading unit further includes a force plate, the force plate is installed on the upper surface of the loading area, and the guide column is installed on the force plate;

[0013] The first data acquisition module includes a pressure sensor connected to the force plate and the loading plate, and a displacement sensor connected to the loading plate lifting device; the pressure sensor collects the pressure information of the force plate and the loading plate and the position information of the loading plate lifting device in real time; the control module controls the loading plate lifting device to drive the loading plate down a certain distance to apply a preset load a to the tire according to the pressure information.

[0014] Preferably, in the above-mentioned multifunctional tire testing machine, the drive unit includes a shaft head, a guide rod, and a shaft head lifting device;

[0015] The guide rod is installed on the top of the base platform; the shaft head lifting device is sleeved on the guide rod and moves vertically along the guide rod; the shaft head is installed on the shaft head lifting device and the shaft head can rotate 360° along the guide rod;

[0016] The first data acquisition module includes a displacement sensor, an angle sensor, and a speed sensor connected to the axle head. The displacement sensor is used to acquire the wheel center position coordinate h when the tire load is a and transmit it to the control module so that the control module automatically controls the wheel center position coordinate to h during subsequent tests, and the control module controls the movement distance of the axle head through the displacement sensor. The angle sensor is used to acquire the angle of the axle head, and the control module controls the axle head to rotate to the loading area or the test area according to the angle of the axle head. The speed sensor is used to acquire the rotational speed of the axle head, and the control module controls the axle head to drive the tire to accelerate to a preset speed c, and move at a constant speed c.

[0017] Preferably, in the above-mentioned multifunctional tire testing machine, the drive unit further includes a first guide rail, which is located between the loading area and the testing area, and the guide rod is slidably connected to the first guide rail so that the guide rod moves in the horizontal direction.

[0018] Preferably, in the above-mentioned multifunctional tire testing machine, the testing device includes a lighting and imaging device, photosensitive paper, and a transparent plate;

[0019] The photosensitive paper is located on the transparent plate, and the lighting and imaging device is located at the bottom of the transparent plate and corresponds to the position of the photosensitive paper. The lighting and imaging device is connected to the data acquisition module and transmits the captured images to the data processing module for tire dynamic imprint test.

[0020] The second data acquisition module includes an image acquisition sensor connected to the lighting and shooting device, used to acquire dynamic imprint images of the tire passing through the photosensitive paper during the dynamic imprint test, and to transmit the acquired dynamic imprint images to the data processing module for data processing.

[0021] Preferably, in the above-mentioned multifunctional tire testing machine, the testing device further includes an obstacle module, a flatbed guide rail, two flatbeds, and two flatbed drive devices;

[0022] The flat plate guide rail is set in the test area. Both flat plates move horizontally along the flat plate guide rail under the drive of the flat plate drive device. The obstacle module is set between the two flat plates for conducting containment characteristic tests.

[0023] The first data acquisition module includes a speed sensor and a displacement sensor connected to the flatbed driving device; the speed sensor acquires the speed of the two flatbeds in real time, and the control module controls the flatbeds to accelerate and move at a constant speed according to the real-time speed; the displacement sensor acquires the position of the two flatbeds in real time, and the control module controls the moving distance of the flatbeds according to the real-time position.

[0024] Preferably, in the above-mentioned multifunctional tire testing machine, the obstacle module includes an obstacle, a clamping plate, a clamping plate driving device, and a second guide rail;

[0025] The obstacle is positioned between the two flat plates, and a second guide rail is connected to both ends of the obstacle. The clamping plate is sleeved on the second guide rail, and the clamping plate moves along the second guide rail under the drive of the clamping plate driving device to apply a clamping force to the obstacle and control the movement speed and movement distance of the flat plates.

[0026] The first data acquisition module includes a force sensor, a speed sensor, and a displacement sensor connected to the clamping plate driving device; the force sensor is used to acquire the clamping force of the clamping plate driving device on the obstacle, and the control module adjusts the clamping force of the clamping plate driving device on the obstacle according to the acquired clamping force data; the speed sensor and the displacement sensor are used to acquire the speed and displacement data of the clamping plate driving device, and the control module controls the clamping plate to accelerate at a preset speed, move at a constant speed, or move a preset distance according to the acquired speed and displacement data.

[0027] Preferably, in the above-mentioned multifunctional tire testing machine, the second data acquisition module includes a force sensor and a displacement sensor connected to the axle head lifting device; the force sensor is used to collect the radial force, longitudinal force and lateral force on the tire wheel center during the containment characteristic test, and transmits the collected mechanical information to the data processing module for data processing; the displacement sensor is used to collect the displacement of the tire wheel center relative to the obstacle during the containment characteristic test, and transmits the displacement information to the data processing module for data processing.

[0028] This invention provides a multifunctional tire testing machine, which has the following advantages compared with the prior art:

[0029] The multifunctional tire testing machine of the present invention can simultaneously perform dynamic imprint and containment characteristic testing, reducing the operation steps and time of corresponding tire performance testing, making it convenient and efficient.

[0030] The multifunctional tire testing machine of the present invention has a high degree of automation. It can automatically complete the parameter setting and operation of the equipment through the control module, saving manpower and time.

[0031] The multifunctional tire testing machine of the present invention can complete different load and speed test conditions, and in particular, the containment characteristic test can meet the needs of obstacles of different shapes and sizes. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0033] Figure 1 This is a front view structural schematic diagram of the multifunctional tire testing machine according to an embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram of the left side of the multifunctional tire testing machine according to an embodiment of the present invention;

[0035] Figure 3 This is a top view of the multifunctional tire testing machine according to an embodiment of the present invention;

[0036] Figure 4 This is a schematic diagram of the obstacle structure in an embodiment of the present invention. Figure 1 ;

[0037] Figure 5 This is a schematic diagram of the obstacle structure in an embodiment of the present invention. Figure 2 ;

[0038] Figure 6 This is a schematic diagram of the obstacle structure in an embodiment of the present invention. Figure 3 ;

[0039] Figure 7 This is a flowchart illustrating the experimental apparatus and control unit according to an embodiment of the present invention.

[0040] In the diagram:

[0041] 1 - Base column, 2 - Base platform, 3 - Force plate, 4 - Guide column, 5 - Loading plate lifting device, 6 - Loading plate, 7 - Shaft head, 8 - Guide rod, 9 - Shaft head lifting device, 10 - Clamping plate, 11 - Obstacle, 12 - Clamping plate driving device, 13 - Second plate, 14 - First plate, 15 - Second plate driving device, 16 - First plate driving device, 17 - Lighting and shooting device, 18 - Second guide rail, 19 - Plate guide rail, 20 - First guide rail, 21 - Photosensitive paper, 22 - Transparent plate, A - Loading area, B - Test area. Detailed Implementation

[0042] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0043] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0044] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0045] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0046] like Figure 1 As shown in Figure 3, this embodiment of the invention provides a multifunctional tire testing machine, including a testing device and a control unit. The testing device is installed on a base platform 2, and a base column 1 is provided at the bottom of the base platform 2. The base platform 2 is divided into a loading area A and a testing area B.

[0047] The testing apparatus includes a loading unit, a testing unit, and a tire drive unit; the loading unit is located in loading area A and is used to apply load to the tire; the testing unit is located in testing area B and is used to conduct tire dynamic imprint tests and containment characteristic tests; the tire drive unit is located between loading area A and testing area B and is used to drive the tire to move horizontally or vertically.

[0048] Based on the above scheme, the multifunctional tire testing machine of the present invention can at least achieve the following functions: it can apply any load to the tire, which is completed by the loading unit; it can accelerate the tire to any specified speed, which is completed by the tire driving unit; and it can perform dynamic imprint test and containment characteristic test, which is completed by the testing unit.

[0049] Furthermore, such as Figure 7 As shown, the control unit includes a control module, a first data acquisition module, a second data acquisition module, and a data processing module. The first data acquisition module is connected to the test device and the control module respectively. The control module can control the test device to complete various operations. The control module is equipped with operating terminals such as computers, tablets, and mobile phones. Users can set the parameters of each device in the control module so that the device can run according to the preset parameters. In addition, the control module can also control the lighting device to turn on or off in the dynamic imprint test.

[0050] The input end of the second data acquisition module is connected to the experimental device, and the output end is connected to the data processing module to transmit the acquired experimental data to the data processing module for data processing and result generation. Specifically, the data processing module is equipped with operating terminals such as computers, tablets, and mobile phones, allowing users to process data and generate reports on the terminal of the data processing module.

[0051] In some embodiments of the present invention, the loading unit includes a guide column 4, a loading plate lifting device 5, and a loading plate 6;

[0052] The guide column 4 is installed at the top of the loading area A; the loading plate lifting device 5 is sleeved on the guide column 4 and moves vertically along the guide column 4; the loading plate 6 is sleeved on the guide column 4 and is located at the top of the loading plate lifting device 5, and the loading plate 6 is driven by the loading plate lifting device 5 to apply load to the tire.

[0053] Furthermore, the loading unit also includes a force-bearing plate 3, which is installed on the upper surface of the loading area A, and the guide column 4 is installed on the force-bearing plate 3;

[0054] The first data acquisition module includes a pressure sensor connected to the force plate 3 and the loading plate 6, and a displacement sensor connected to the loading plate lifting device 5. The pressure sensor collects the pressure information of the force plate 3 and the loading plate 6 and the position information of the loading plate lifting device 5 in real time. The control module controls the loading plate lifting device 5 to drive the loading plate 6 down a certain distance to apply a preset load a to the tire based on the pressure information.

[0055] Specifically, the loading unit operates as follows: The loading plate 6 is raised to a certain distance d, and the tire is fixed on the axle head 7 of the tire drive device. The axle head 7 drives the tire to move to the loading area A below the loading plate 6. At this time, the axle head lifting device 9 does not apply force. The control module presses down the loading plate 6 according to the user-input load a to complete the loading of the tire. The displacement sensor on the axle head 7 obtains the current wheel center position coordinate h. In subsequent tests, the control module automatically controls the wheel center position coordinate to h, thus ensuring the load is a. The loading process must be completed before conducting dynamic imprint and containment characteristic tests. If the loads are inconsistent in the two tests, the control module will record the wheel center position coordinates under the two loads and automatically complete the loading of the corresponding loads.

[0056] In some embodiments of the present invention, the drive unit includes a shaft head 7, a guide rod 8, and a shaft head lifting device 9;

[0057] Guide rod 8 is installed on the top of the base platform 2; shaft head lifting device 9 is sleeved on guide rod 8 and moves vertically along guide rod 8; shaft head 7 is installed on shaft head lifting device 9 and shaft head 7 can rotate 360° along guide rod 8.

[0058] The first data acquisition module includes a displacement sensor, an angle sensor, and a speed sensor connected to the axle head 7. The displacement sensor is used to acquire the wheel center position coordinate h when the tire load is a and transmit it to the control module so that the control module can automatically control the wheel center position coordinate to h during subsequent tests. The control module also controls the movement distance of the axle head 7 through the displacement sensor. The angle sensor is used to acquire the angle of the axle head 7 and, based on the angle of the axle head 7, the control module controls the axle head 7 to rotate to the loading area A or the test area B. The speed sensor is used to acquire the rotational speed of the axle head 7 and, based on the angle of the axle head 7, the control module controls the axle head 7 to drive the tire to accelerate to a preset speed c and move at a constant speed c.

[0059] Specifically, the axle head lifting device 9 can move up and down along the guide rod 8. The displacement sensor on the axle head lifting device 9 is connected to the control module. When the tire needs to undergo a containment characteristic or dynamic imprint test under a certain load a, the control module automatically adjusts the axle head lifting device 9 so that the wheel center position coordinate is h. The axle head lifting device 9 can also adjust the position of the axle head 7 when changing and fixing tires of different specifications and sizes. The axle head 7 can rotate 360° along the guide rod 8. The angle sensor on it and the axle head 7 are connected to the control module. When loading, the axle head 7 faces the loading area A. When conducting dynamic imprint and containment characteristic tests, the axle head 7 rotates to the test area B. The speed sensor on the axle head 7 and the axle head 7 are connected to the control module. When a specified speed c is input into the control module, the axle head 7 first drives the tire to accelerate to speed c, and then moves at a constant speed c.

[0060] Furthermore, the drive unit also includes a first guide rail 20, which is located between the loading area A and the test area B, and the guide rod 8 is slidably connected to the first guide rail 20 so that the guide rod 8 can move in the horizontal direction.

[0061] In some embodiments of the present invention, the testing apparatus includes an illumination and imaging device 17, a photosensitive paper 21, and a transparent plate 22;

[0062] Photosensitive paper 21 is located on transparent plate 22. Illumination and imaging device 17 is located at the bottom of transparent plate 22 and corresponds to the position of photosensitive paper 21. Illumination and imaging device 17 is connected to data acquisition module and transmits the captured image to data processing module for tire dynamic imprint test. During the test, the illumination device of illumination and imaging device 17 illuminates photosensitive paper 21 and surrounding area. Imaging device is used to capture the dynamic imprint generated when the tire passes through photosensitive paper 21 at a certain speed c and transmits the dynamic imprint to data processing module.

[0063] The second data acquisition module includes an image acquisition sensor connected to the lighting and shooting device 17, used to acquire dynamic imprint images of the tire passing through the photosensitive paper 21 during the dynamic imprint test, and to transmit the acquired dynamic imprint images to the data processing module for data processing.

[0064] Furthermore, the testing device also includes an obstacle module, a flatbed rail 19, a first flatbed 14, a second and first flatbed drive device 16, and a second flatbed drive device 15;

[0065] The flat guide rail 19 is set in the test area B. The first flat plate 14 and the second flat plate 13 move horizontally along the flat guide rail 19 under the drive of the first flat plate drive device 16 and the second flat plate drive device 15, respectively. The obstacle module is set between the two plates for conducting the containment characteristic test.

[0066] Specifically, obstacle 11 can be any length and shape of the same width as the flat plate and the same height below the flat plate surface, such as... Figure 4 As shown in Figure 6, the obstacle 11 is in the shape of a semicircle, trapezoid, and triangle, respectively. The shaded part of the obstacle 11 is the part clamped by the clamping plate 10 of the obstacle 11, and its width and height are the same as the plate.

[0067] The first data acquisition module includes a speed sensor and a displacement sensor connected to the flatbed drive device. The speed sensor acquires the speed of the two flatbeds in real time, and the control module controls the flatbeds to accelerate and move at a constant speed according to the real-time speed. The displacement sensor acquires the position of the two flatbeds in real time, and the control module controls the moving distance of the flatbeds according to the real-time position.

[0068] Furthermore, the obstacle module includes an obstacle 11, a clamping plate 10, a clamping plate driving device 12, and a second guide rail 18;

[0069] An obstacle 11 is placed between two flat plates. Both ends of the obstacle 11 are connected to a second guide rail 18. A clamping plate 10 is sleeved on the second guide rail 18. The clamping plate 10 moves along the second guide rail 18 under the drive of the clamping plate driving device 12 to apply clamping force to the obstacle 11 and control the movement speed and movement distance of the flat plates.

[0070] The first data acquisition module includes a force sensor, a speed sensor, and a displacement sensor connected to the clamping plate driving device 12. The force sensor is used to acquire the clamping force of the clamping plate driving device 12 on the obstacle 11. The control module adjusts the clamping force of the clamping plate driving device 12 on the obstacle 11 according to the acquired clamping force data. The speed sensor and displacement sensor are used to acquire the speed and displacement data of the clamping plate driving device 12. The control module controls the clamping plate 10 to accelerate, move at a constant speed, or move a preset distance according to the acquired speed and displacement data.

[0071] In some embodiments of the present invention, the second data acquisition module includes a force sensor and a displacement sensor connected to the axle head lifting device 9; the force sensor is used to collect the radial force, longitudinal force and lateral force on the tire wheel center when the tire rolls uniformly over the obstacle 11 during the containment characteristic test, and transmits the collected mechanical information to the data processing module for data processing; the displacement sensor is used to collect the displacement of the tire wheel center relative to the obstacle 11 during the containment characteristic test, and transmits the displacement information to the data processing module for data processing.

[0072] The complete working process of this invention is as follows:

[0073] (1) Loading process

[0074] The loading plate 6 is raised to a certain distance d, and the tire is fixed on the axle head 7 of the tire drive device. The axle head 7 drives the tire to move to the loading area A below the loading plate 6. At this time, the axle head lifting device 9 does not apply force. The control module presses down the loading plate 6 according to the load a input by the user to complete the loading of the tire. The displacement sensor on the axle head 7 obtains the current wheel center position coordinate h. In subsequent tests, the control module automatically controls the wheel center position coordinate to be h, that is, to ensure the force state of the load is a.

[0075] (2) Obstacle 11 clamping

[0076] The control module manipulates the first plate drive device 16 and the second plate drive device 15 to drive the first plate 14 and the second plate 13 to move outward to the left and right at a speed of e1 along the plate guide rail 19. The required obstacle 11 is placed between the first plate 14 and the second plate 13. The first plate drive device 16 and the second plate drive device 15 drive the first plate 14 and the second plate 13 to move inward to the left and right at a speed of e1 along the plate guide rail 19. The clamping plate drive device 12 drives the clamping plate 10 to move back and forth along the second guide rail 18 at a speed of e2, clamping the obstacle 11 in all directions and maintaining a certain clamping force g.

[0077] (3) Dynamic Imprint Test

[0078] The axle head 77 of the tire drive device drives the tire to move to the test area B. The axle head lifting device 9 controls the axle head 7 to adjust the wheel center position coordinate to h to achieve the loaded state. The axle head 7 drives the tire to accelerate to a specified speed c in the non-photosensitive paper 21 area of ​​the transparent plate 22. The tire passes through the photosensitive paper 21 at a constant speed c. The image acquisition sensor in the lighting and shooting device 17 transmits the acquired dynamic imprint image to the data processing module.

[0079] (4) Enclosure property test

[0080] (If the load and dynamic imprint are inconsistent, the axle head lifting device 9 controls the axle head 7 to adjust the wheel center position coordinates to achieve the required load state.) The axle head 7 drives the tire to continue moving forward at speed c (it can also accelerate to another speed and then move forward at a constant speed). After passing the obstacle 11 for a certain distance, it stops. During this process, the radial force, longitudinal force and lateral force sensors of the axle head 7 collect the radial force, longitudinal force and lateral force on the tire wheel center, and the displacement sensor collects the displacement of the tire wheel center relative to the obstacle 11, and transmits the data collected by the sensors to the data processing module.

[0081] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make several improvements and substitutions without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A multifunctional tire testing machine, characterized in that, It includes a testing device and a control unit, wherein the testing device is mounted on a base platform, and the base platform is divided into a loading area and a testing area; The testing apparatus includes a loading unit, a testing unit, and a tire driving unit; the loading unit is disposed in the loading area and is used to apply load to the tire; the testing unit is disposed in the testing area and is used to perform tire dynamic imprint tests and containment characteristic tests; the tire driving unit is disposed between the loading area and the testing area and is used to drive the tire to move in the horizontal or vertical direction. The control unit includes a control module, a first data acquisition module, a second data acquisition module, and a data processing module. The first data acquisition module is connected to the test device and the control module, respectively. The input end of the second data acquisition module is connected to the test device, and the output end is connected to the data processing module, so as to transmit the acquired test data to the data processing module for data processing and generate results. The testing unit includes a lighting and imaging device, photosensitive paper, and a transparent plate; The photosensitive paper is located on the transparent plate, and the lighting and imaging device is located at the bottom of the transparent plate and corresponds to the position of the photosensitive paper. The lighting and imaging device is connected to the first data acquisition module and the second data acquisition module, and transmits the captured images to the data processing module for tire dynamic imprint test. The second data acquisition module includes an image acquisition sensor connected to the lighting and shooting device, used to acquire dynamic imprint images of the tire passing through the photosensitive paper during the dynamic imprint test, and to transmit the acquired dynamic imprint images to the data processing module for data processing. The test unit also includes an obstacle module, a flat rail, two flat plates, and two flat plate drive devices; The flat plate guide rail is set in the test area. Both flat plates move horizontally along the flat plate guide rail under the drive of the flat plate drive device. The obstacle module is set between the two flat plates for conducting containment characteristic tests. The first data acquisition module includes a speed sensor and a displacement sensor connected to the flatbed driving device; the speed sensor acquires the speed of the two flatbeds in real time, and the control module controls the flatbeds to accelerate and move at a constant speed according to the real-time speed; the displacement sensor acquires the position of the two flatbeds in real time, and the control module controls the moving distance of the flatbeds according to the real-time position.

2. The multifunctional tire testing machine according to claim 1, characterized in that, The loading unit includes a guide column, a loading plate lifting device, and a loading plate; The guide column is installed on top of the loading area; the loading plate lifting device is sleeved on the guide column and moves vertically along the guide column; the loading plate is sleeved on the guide column and is located on top of the loading plate lifting device, and the loading plate is driven by the loading plate lifting device to apply load to the tire.

3. The multifunctional tire testing machine according to claim 2, characterized in that, The loading unit further includes a force-bearing plate, which is installed on the upper surface of the loading area, and the guide column is installed on the force-bearing plate; The first data acquisition module includes a pressure sensor connected to the force plate and the loading plate, and a displacement sensor connected to the loading plate lifting device; the pressure sensor collects the pressure information of the force plate and the loading plate in real time, and the control module controls the loading plate lifting device to drive the loading plate down a certain distance to apply a preset load a to the tire according to the pressure information.

4. The multifunctional tire testing machine according to claim 1, characterized in that, The tire drive unit includes an axle head, a guide rod, and an axle head lifting device; The guide rod is installed on the top of the base platform; the shaft head lifting device is sleeved on the guide rod and moves vertically along the guide rod; the shaft head is installed on the shaft head lifting device and the shaft head can rotate 360° along the guide rod; The first data acquisition module includes a displacement sensor, an angle sensor, and a speed sensor connected to the axle head. The displacement sensor is used to acquire the wheel center position coordinate h when the tire load is a and transmit it to the control module so that the control module automatically controls the wheel center position coordinate to h during subsequent tests, and the control module controls the movement distance of the axle head through the displacement sensor. The angle sensor is used to acquire the angle of the axle head, and the control module controls the axle head to rotate to the loading area or the test area according to the angle of the axle head. The speed sensor is used to acquire the rotational speed of the axle head, and the control module controls the axle head to drive the tire to accelerate to a preset speed c, and move at a constant speed c.

5. The multifunctional tire testing machine according to claim 4, characterized in that, The tire drive unit further includes a first guide rail located between the loading area and the test area, and the guide rod is slidably connected to the first guide rail so that the guide rod can move in the horizontal direction.

6. The multifunctional tire testing machine according to claim 5, characterized in that, The obstacle module includes an obstacle, a clamping plate, a clamping plate drive device, and a second guide rail; The obstacle is positioned between the two flat plates, and a second guide rail is connected to both ends of the obstacle. The clamping plate is sleeved on the second guide rail, and the clamping plate moves along the second guide rail under the drive of the clamping plate driving device to apply a clamping force to the obstacle and control the movement speed and movement distance of the flat plates. The first data acquisition module includes a force sensor, a speed sensor, and a displacement sensor connected to the clamping plate driving device; the force sensor is used to acquire the clamping force of the clamping plate driving device on the obstacle, and the control module adjusts the clamping force of the clamping plate driving device on the obstacle according to the acquired clamping force data; The speed sensor and the displacement sensor are used to acquire the speed and displacement data of the clamping plate driving device. The control module controls the clamping plate to accelerate, move at a constant speed, or move a preset distance according to the acquired speed and displacement data.

7. The multifunctional tire testing machine according to claim 6, characterized in that, The second data acquisition module includes a force sensor and a displacement sensor connected to the axle head lifting device. The force sensor is used to collect the radial force, longitudinal force, and lateral force on the tire wheel center during the containment characteristic test, and transmits the collected mechanical information to the data processing module for data processing. The displacement sensor is used to collect the displacement of the tire wheel center relative to the obstacle during the containment characteristic test, and transmits the displacement information to the data processing module for data processing.

Images