Tire testing apparatus

Abstract

The utility model belongs to tire detection technical field, specifically disclose tire detection equipment, including desk frame, rotary support mechanism and multi -freedom degree detection mechanism, rotary support mechanism includes the rotating installation in the rotating disc of desk frame and the fixed installation in the top surface of rotating disc's locating platform, locating boss has the locating portion that presents multistage step structure, a plurality of locating platforms along the circumferential direction of rotating disc evenly seted up to form the joint fixing and the location of different size's tire, multi -freedom degree detection mechanism includes the line sweep camera for carrying out detection, and line sweep camera has at least X, Y and Z's freedom of direction, and line sweep camera can be driven to move to the position department above locating platform to carry out detection to tire, the utility model has the advantages of effectively avoiding the deformation problem that leads to due to improper clamping in tire detection process, improves the detection precision and the advantage of coverage, to solve the problem that tire fixed mode in prior art is easy to cause deformation, the detection visual angle is limited and the detection precision is insufficient.

Description

Technical Field

[0001] This utility model belongs to the field of tire testing technology, and in particular relates to a tire testing device. Background Technology

[0002] As the only part of a vehicle that directly contacts the ground, the surface quality of tires has a decisive impact on driving safety, performance stability, and service life. Surface inspection, as a core part of the tire manufacturing process, mainly covers key aspects such as appearance defect identification, dimensional accuracy measurement, and geometric shape evaluation.

[0003] In existing technologies, manual inspection methods generally rely on visual observation combined with simple fixtures. This method has significant drawbacks: the inspection process is highly dependent on operator experience, resulting in large subjective errors and difficulty in accurately quantifying precise parameters such as out-of-roundness, radial runout, lateral runout, eccentricity, and bead roundness. Furthermore, the inspection efficiency is low, failing to meet the high-speed requirements of modern production lines. While automated inspection solutions incorporate equipment such as cameras, they generally suffer from structural problems: fixed camera mounting positions limit the inspection angle, making it impossible to flexibly cover the entire tire surface, especially complex curved areas; tire fixing methods often rely on mechanical clamps to hold the bead area, and the tightness of the clamps is difficult to control precisely. Excessive tightness can cause localized tire deformation, while insufficient looseness can lead to displacement or vibration during inspection, introducing additional measurement errors and severely affecting the reliability and consistency of the inspection results. These shortcomings make it difficult for existing equipment to meet the demands for high-precision and highly adaptable tire inspection.

[0004] To address the aforementioned issues, existing technologies urgently need improvement. Utility Model Content

[0005] The purpose of this invention is to provide a tire inspection device that effectively avoids deformation caused by improper clamping during tire inspection, improves inspection accuracy and coverage, and solves the problems of deformation, limited inspection angle and insufficient inspection accuracy in the existing tire fixing methods.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows: a tire inspection device, comprising a table frame, a rotating support mechanism, and a multi-degree-of-freedom inspection mechanism. The rotating support mechanism includes a turntable rotatably mounted on the table frame and a positioning platform fixedly mounted on the top surface of the turntable. The positioning platform has a positioning part with a multi-level stepped structure. Multiple positioning platforms are evenly arranged along the circumference of the turntable to form a locking, fixing, and limiting mechanism for tires of different sizes. The multi-degree-of-freedom inspection mechanism includes a line scan camera for inspection. The line scan camera has at least X, Y, and Z degrees of freedom. The line scan camera can be driven to move to a position above the positioning platform to inspect the tire.

[0007] Furthermore, the multi-degree-of-freedom detection mechanism also includes a moving mechanism for controlling the multi-degree-of-freedom movement of the line scan camera. The moving mechanism includes a first slide, a second slide, and a third slide. The first slide is arranged along the Y direction; the second slide is arranged along the X direction and is mounted on the first slide in a controllable manner by sliding along the first slide; the third slide is arranged along the Z direction and is slidably mounted on the second slide, and the line scan camera is mounted on the third slide in a driveable manner by sliding along the third slide.

[0008] Furthermore, a desktop is fixedly installed on the top surface of the table frame, and the multi-degree-of-freedom detection mechanism also includes a mounting bracket, with the first slide mounted on the desktop via the mounting bracket.

[0009] Furthermore, the rotating support mechanism also includes a mounting base plate and a connecting rod. The mounting base plate is mounted below the tabletop via the connecting rod. The tabletop has a clearance opening. The turntable is mounted on the mounting base plate and located within the clearance opening in a manner that allows it to be driven to rotate around its own central axis.

[0010] Furthermore, the rotating support mechanism also includes support guide wheels, which are mounted on the mounting base plate and abut against the bottom surface of the turntable. Multiple support guide wheels are provided, and the multiple support guide wheels are evenly distributed along the axial direction of the mounting base plate.

[0011] Furthermore, the rotating support mechanism also includes a rotating drive source for driving the turntable to rotate. The rotating drive source is mounted on the mounting base plate and is directly or indirectly connected to the center of the bottom surface of the turntable.

[0012] Furthermore, it also includes a protective cover, which is installed on the desktop, and a mounting bracket is set inside the protective cover. One end of the second slide is slidably connected to the first slide, and the other end extends out of the protective cover along the X direction.

[0013] The beneficial effects of this technical solution are as follows:

[0014] This utility model discloses a tire inspection device that uses a multi-step positioning part to stably fix tires of different sizes to reduce deformation, and uses a line scan camera with multiple degrees of freedom to ensure that the entire surface of the tire is inspected without blind spots. This solves the problems of deformation and limited inspection angle caused by the existing tire fixing method. It has the advantages of effectively avoiding deformation during tire inspection, improving inspection accuracy and coverage. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the tire testing equipment of this utility model;

[0016] Figure 2 This is a schematic diagram of the rotating support mechanism of the tire testing equipment of this utility model assembled on a desktop.

[0017] Figure 3This is an exploded view of the rotating support mechanism of the tire testing equipment of this utility model;

[0018] Figure 4 This is a schematic diagram of the multi-degree-of-freedom testing mechanism of the tire testing equipment of this utility model. Detailed Implementation

[0019] The following detailed description illustrates the specific implementation method:

[0020] The reference numerals in the accompanying drawings include: table frame 1, rotating support mechanism 2, multi-degree-of-freedom detection mechanism 3, tabletop 4, protective cover 5, turntable 6, positioning platform 7, positioning part 701, mounting base plate 8, connecting rod 9, support guide wheel 10, rotating drive source 11, line scan camera 12, first slide 13, second slide 14, third slide 15, mounting bracket 16.

[0021] 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 skilled in the art without creative effort are within the scope of protection of the present utility model. In this embodiment, the X, Y, and Z directions correspond to the length, width, and height directions of the table frame, respectively, as shown in the figure. The directions are limited for ease of description, which is understandable to those skilled in the art and will not be elaborated here.

[0022] The basic implementation examples are as follows: Figure 1-4The diagram shows a tire inspection device, comprising a table frame 1, a rotating support mechanism 2, and a multi-degree-of-freedom inspection mechanism 3. The rotating support mechanism 2 includes a turntable 6 rotatably mounted on the table frame 1 and a positioning platform 7 fixedly mounted on the top surface of the turntable 6. The positioning platform has a positioning part 701 with a multi-step structure. Multiple positioning platforms 7 are evenly arranged along the circumference of the turntable 6 to clamp, fix, and limit tires of different sizes. The multi-degree-of-freedom inspection mechanism 3 includes a line scan camera 12 for inspection. The line scan camera 12 has at least X, Y, and Z degrees of freedom and can be driven to move to a position above the positioning platform 7 to inspect the tire. Specifically, the table frame 1 is set as the basic support structure to ensure the overall stability of the equipment and provide a reliable platform for subsequent inspections. The turntable 6 of the rotating support mechanism 2 is rotatably mounted on the table frame 1, allowing the tire to rotate with the turntable 6, facilitating continuous scanning by the line scan camera 12 and avoiding the defect of a fixed camera not being able to cover the entire circumference of the tire. The positioning platform 7 is fixedly installed on the top surface of the turntable 6. Its positioning part 701 has a multi-level stepped structure, as shown in the figure. The multi-level stepped structure refers to a surface structure composed of multiple concentric annular steps of different diameters or multiple rectangular steps of different sizes. It can be formed directly on the positioning boss by integral machining or achieved through modular assembly. Each step corresponds to a tire of a certain diameter. Based on this structure, when positioning and fixing the tire, the operator only needs to place the tire directly on the rotating support mechanism 2. The tire can be clamped by the corresponding step based on its own size data, thereby achieving fixation and positioning. Thus, the positioning platform 7 with the stepped positioning part 701 can automatically match the tire bead contour of different sizes of tires to achieve adaptive positioning. Furthermore, multiple positioning platforms 7 are evenly distributed around the circumference of the turntable 6 to form symmetrical clamping, positioning and limiting of tires of different sizes, effectively preventing tire displacement or deformation caused by uneven clamp tightness, and ensuring the accuracy of the detection benchmark. The line scan camera 12 of the multi-degree-of-freedom detection mechanism 3 has X, Y, and Z degrees of freedom, and can be driven to move flexibly to any position above the positioning stage 7 to scan the tire surface. This overcomes the limitation of fixed cameras being unable to adapt to tires of different sizes. The multi-degree-of-freedom capability can be achieved through a combination of multi-joint robotic arms, multiple sets of linear sliding pairs, or other methods. Thus, this technical solution effectively solves the problem of inflexible detection caused by fixed cameras, achieving blind-spot-free scanning through the multi-degree-of-freedom movement of the line scan camera 12. Simultaneously, the multi-step structure and evenly distributed positioning stages 7 of the positioning stage 7 eliminate the need for manual adjustment of the clamp tightness, ensuring the accuracy of the detection reference.

[0023] In this embodiment, the multi-degree-of-freedom detection mechanism 3 further includes a moving mechanism for controlling the multi-degree-of-freedom movement of the line scan camera 12. The moving mechanism includes a first slide 13, a second slide 14, and a third slide 15. The first slide 13 is arranged along the Y direction; the second slide 14 is arranged along the X direction and is mounted on the first slide 13 in a controllable manner; the third slide 15 is arranged along the Z direction and is slidably mounted on the second slide 14. The line scan camera 12 is mounted on the third slide 15 in a driveable manner. Specifically, the first slide 13 refers to the basic support structure set along the Y direction, which can be implemented using a linear guide or ball screw system. Its purpose is to provide a stable Y-axis motion reference to ensure that the camera covers the detection range in the tire width direction. The second slide 14 refers to the planar moving component set along the X direction, which can be implemented using a slider or linear bearing. Its purpose is to adjust the X-axis position after positioning in the Y direction, avoiding the limitation of movement in a single direction. The third slide 15 refers to the lifting and adjusting mechanism set along the Z direction, which can be implemented using a sliding pair structure such as a lead screw, pneumatic push rod, or motor-driven slide rail slider. Its purpose is to dynamically adjust the camera height to adapt to changes in the tire surface curvature. The line scan camera 12 is drivably mounted on the third slide 15, which can be implemented using a quick-release clamp or servo motor drive. Its purpose is to simplify the transmission path and quickly respond to height change requirements. In a preferred embodiment, the line scan camera 12 can be driven to rotate within the XZ plane, allowing for adjustable shooting angles. This expands the surface inspection range by changing the position and shooting angle, extending beyond simple external surface inspection to include the inspection of the tire's inner wall surface. The rotation of the line scan camera 12 can be achieved through manual adjustment, adjustment of the electric turntable 6, or other methods. Those skilled in the art can select specific rotating pairs to implement this function based on actual conditions, which will not be elaborated here. Thus, the multiple guide rails effectively improve the camera's motion control accuracy and stability in the X, Y, and Z directions, while also reducing the impact of mechanical shaking on image acquisition. This ensures image clarity for tire surface defect detection and reduces dimensional measurement errors, thereby meeting the requirements of high-precision automated inspection.

[0024] In this embodiment, a desktop 4 is fixedly mounted on the top surface of the table frame 1. The multi-degree-of-freedom detection mechanism 3 also includes a mounting bracket 16, and the first slide 13 is mounted on the desktop 4 via the mounting bracket 16. Specifically, the desktop 4 refers to a platform structure fixedly mounted on the top surface of the table frame 1, which can be made of metal sheet or composite material. Its purpose is to provide a flat and rigid basic reference benchmark, avoiding the direct transmission of unevenness of the table frame 1's main structure to the detection mechanism. The mounting bracket 16 is preferably a rectangular spatial frame structure to ensure support strength and effective support area. By installing the mounting bracket 16, the second slide 14 forms a cantilever structure, ensuring that the X-axis adjustment and Y-axis adjustment do not interfere with each other, while providing a spatial basis for Z-axis adjustment.

[0025] In this embodiment, the rotating support mechanism 2 further includes a mounting base plate 8 and a connecting rod 9. The mounting base plate 8 is mounted below the tabletop 4 via the connecting rod 9. The tabletop 4 has a clearance opening. The turntable 6 is mounted on the mounting base plate 8 and located within the clearance opening in a manner that allows it to rotate around its own central axis. Specifically, the mounting base plate 8 refers to the basic structure used to support the turntable 6, aiming to provide a stable rotating platform. The connecting rod 9 is a supporting component connecting the mounting base plate 8 and the tabletop 4. It can be implemented by evenly distributing multiple cylindrical rods to ensure the stability of the mounting base plate 8 during equipment operation. The clearance opening refers to the hollow area opened in the tabletop 4. The clearance opening matches the contour of the turntable 6 so that the turntable 6 can be completely or partially embedded into the tabletop 4. The turntable 6 is mounted in a manner that allows it to rotate around its own central axis, meaning that the turntable 6 is connected to the mounting base plate 8 via bearings or similar mechanisms. This can be achieved by direct or indirect drive, aiming to achieve precise controllability of the turntable 6's rotation. Thus, in this embodiment, by placing the mounting base plate 8 below the desktop 4 and fixing it with the connecting rod 9, the unused space below the desktop 4 is used as a support foundation, avoiding vibration interference that might occur if the turntable 6 directly contacts the top surface of the table frame 1. Simultaneously, the clearance opening provided in the desktop 4 allows the turntable 6 to be partially or completely embedded within it, directly eliminating the obstruction of the turntable 6's rotation path by the desktop 4. The turntable 6 is installed on the mounting base plate 8 and located within the clearance opening. Combined with the precise positioning of the mounting base plate 8 and the spatial guidance of the clearance opening, this ensures that the turntable 6 maintains a stable position without physical interference during rotation, thereby forming a complete rotational support system.

[0026] In this embodiment, the rotating support mechanism 2 further includes support guide wheels 10. The support guide wheels 10 are mounted on the mounting base plate 8 and abut against the bottom surface of the turntable 6. Multiple support guide wheels 10 are provided, and these multiple support guide wheels 10 are evenly distributed along the axial direction of the mounting base plate 8. Specifically, the support guide wheels 10 are rolling elements used to provide bottom support. They can be implemented using ball bearings, roller bearings, bullseye wheels, or sliding guide wheels. Their purpose is to reduce frictional resistance during the rotation of the turntable 6 and provide stable support. For example, the support guide wheels 10 can be ball bearings, with their outer ring directly abutting against the bottom surface of the turntable 6, and their inner ring mounted on the mounting base plate 8 via a fixed bracket. Multiple ball bearings are evenly distributed along the circumferential direction of the bottom surface of the turntable 6 to provide continuous and symmetrical support force. The multiple support guide wheels 10 evenly distributed along the axial direction of the mounting base plate 8 can be understood as multiple support points evenly distributed along the circumferential direction of the bottom surface of the turntable 6. Their purpose is to ensure that the tire load is evenly distributed and to prevent deformation of the turntable 6 caused by localized stress concentration. Thus, by setting multiple support guide wheels 10 in this embodiment, the eccentricity and runout amplitude of the turntable 6 during rotation are effectively reduced, thereby improving the detection accuracy of the line scan camera 12 for tire surface defects and geometric dimensions.

[0027] In this embodiment, the rotating support mechanism 2 also includes a rotating drive source 11 for driving the turntable 6 to rotate. The rotating drive source 11 is mounted on the mounting base plate 8 and directly or indirectly connected to the center of the bottom surface of the turntable 6. Specifically, the rotating drive source 11 is the core actuator that provides rotational power. It can be implemented using a servo motor, stepper motor, or hydraulic motor. Its purpose is to provide controllable and stable rotational power output to the turntable 6. Connecting to the center of the bottom surface of the turntable 6 means that the point of application of the driving force is precisely set at the geometric center axis of the turntable 6. This can be achieved by directly connecting with a coupling or indirectly connecting through a belt or gear set. Its purpose is to eliminate the torque imbalance caused by eccentric connection and reduce dynamic offset during rotation.

[0028] In this embodiment, a protective cover 5 is also included. The protective cover 5 is installed on the desktop 4, and the mounting bracket 16 is disposed inside the protective cover 5. One end of the second slide 14 is slidably connected to the first slide 13, and the other end extends out of the protective cover 5 along the X direction. Specifically, the protective cover 5 is a physical barrier structure used to isolate the external environment. It can be made of metal sheet or engineering plastic material and can be fixed to the desktop 4 by welding or bolting to block external pollutants from entering the sliding path of the moving mechanism. At the same time, one end of the second slide 14 is slidably connected to the first slide 13 inside the protective cover 5, and the other end extends out of the protective cover 5 along the X direction. This structural design, while maintaining the X-direction freedom of movement of the second slide 14, reduces the penetration path of pollutants along the sliding path by partially covering the sliding connection point with the protective cover 5, thereby ensuring that the moving mechanism maintains low frictional resistance and high positioning accuracy during long-term operation.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] The above descriptions are merely embodiments of this utility model. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are knowledgeable of all existing technologies in that field, and possess the ability to apply conventional experimental methods prior to that date. Therefore, those skilled in the art can, based on the guidance provided in this application, improve and implement this solution in conjunction with their own capabilities. Typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A tire testing device, characterized in that: The device includes a table frame, a rotating support mechanism, and a multi-degree-of-freedom detection mechanism. The rotating support mechanism includes a turntable rotatably mounted on the table frame and a positioning platform fixedly mounted on the top surface of the turntable. The positioning platform has a positioning part with a multi-step structure. Multiple positioning platforms are evenly arranged along the circumference of the turntable to form a locking, fixing, and limiting mechanism for tires of different sizes. The multi-degree-of-freedom detection mechanism includes a line scan camera for detection. The line scan camera has at least X, Y, and Z degrees of freedom. The line scan camera can be driven to move to a position above the positioning platform to detect the tire.

2. The tire testing equipment according to claim 1, characterized in that: The multi-degree-of-freedom detection mechanism further includes a moving mechanism for controlling the multi-degree-of-freedom movement of the line scan camera. The moving mechanism includes a first slide, a second slide, and a third slide. The first slide is arranged along the Y direction; the second slide is arranged along the X direction and is mounted on the first slide in a controllable manner by sliding along the first slide; the third slide is arranged along the Z direction and is slidably mounted on the second slide, and the line scan camera is mounted on the third slide in a driveable manner by sliding along the third slide.

3. The tire testing equipment according to claim 2, characterized in that: The table frame has a fixed tabletop on its top surface, and the multi-degree-of-freedom detection mechanism also includes a mounting bracket, through which the first slide is mounted on the tabletop.

4. The tire testing equipment according to claim 3, characterized in that: The rotating support mechanism also includes a mounting base plate and a connecting rod. The mounting base plate is mounted below the desktop via the connecting rod. The desktop is provided with a clearance opening. The turntable is mounted on the mounting base plate and located within the clearance opening in a manner that allows it to be driven to rotate around its own central axis.

5. The tire testing equipment according to claim 4, characterized in that: The rotating support mechanism also includes support guide wheels, which are mounted on the mounting base plate and abut against the bottom surface of the turntable. Multiple support guide wheels are provided, and the multiple support guide wheels are evenly distributed along the axial direction of the mounting base plate.

6. The tire testing equipment according to claim 4, characterized in that: The rotating support mechanism also includes a rotating drive source for driving the turntable to rotate. The rotating drive source is mounted on the mounting base plate and is directly or indirectly connected to the center of the bottom surface of the turntable.

7. The tire testing equipment according to claim 3, characterized in that: It also includes a protective cover, which is installed on the desktop. The mounting bracket is disposed inside the protective cover. One end of the second slide is slidably connected to the first slide, and the other end extends out of the protective cover along the X direction.

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