Test equipment

Abstract

The utility model relates to the technical field of vehicle part testing, in particular to testing equipment which is used for a suspension assembly, and the suspension assembly at least comprises a rotating assembly and a sign structure which are rotationally connected. The testing equipment comprises a rack, a rotary driving unit, a connecting unit and an angle measuring unit, the rotary driving unit is arranged on the rack; one end of the connecting unit is connected with the rotating output end of the rotating driving unit, and the other end of the connecting unit is used for fixing the rotating assembly; the angle measuring unit is arranged on the rack and is used for measuring the rotation angle of the mark structure; the test equipment provided by the utility model can meet the swing test requirements of a finished product or a semi-finished product of the suspension type wheel trim cover, can screen out qualified suspension type wheel trim covers, and ensures the product quality.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle component testing, in particular to a testing device. Background Art

[0002] With the continuous progress of the automobile industry, more and more high-quality wheel appearance decoration products have appeared on the market; among them, the floating wheel decorative cover is particularly attractive. The characteristic of this decorative cover is that the logo (logo structure) thereon does not rotate with the wheel. Even when the vehicle is moving, the logo structure can maintain a fixed direction. This is achieved by installing a bearing between the logo structure of the decorative cover and the decorative cover body; the bearing is located between the logo structure and the decorative cover body fixed to the wheel. When the vehicle moves, the lateral force generated by the counterweight acts on the bearing. Since the bearing can withstand and disperse the bending moment caused by the counterweight, the logo structure can remain stable and will not rotate with the wheel.

[0003] When designing a suspended wheel decorative cover, the weight of the counterweight and the selection of the bearing are crucial. These factors not only affect the directional stability of the logo structure when the wheel is running, but also involve the starting torque and running resistance of the bearing, which in turn affects the balance and efficiency of the entire system. If the counterweight and the bearing are not selected properly, the logo structure may produce a large rotation angle due to changes in vehicle speed during vehicle driving, thereby affecting the appearance and stability performance; therefore, there is an urgent need for a device to test the finished or semi-finished products of the suspended wheel decorative cover to ensure the quality of the suspended wheel decorative cover product. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a testing device to meet the swing test requirements of finished or semi-finished products of suspended wheel decorative covers, and to screen out qualified suspended wheel decorative covers, thereby ensuring product quality.

[0005] To achieve the above-mentioned purpose and other related purposes, the utility model provides a testing device for a suspension assembly, the suspension assembly at least comprising a rotation assembly and a marking structure that are rotationally connected, the testing device comprising:

[0006] frame;

[0007] A rotation driving unit is arranged on the frame;

[0008] A connecting unit, one end of which is connected to the rotation output end of the rotation driving unit, and the other end of which is used to be fixed to the rotating assembly;

[0009] The angle measuring unit is arranged on the frame and is used to measure the rotation angle of the marking structure.

[0010] In an optional embodiment of the present utility model, a control unit electrically connected to the rotation drive unit is provided on the frame;

[0011] The control unit is configured to control the rotation speed and / or the rotation time and / or the acceleration / deceleration time of the rotary drive unit.

[0012] In an optional embodiment of the present invention, the rotating component is a bearing rotatably connected to the logo structure or a wheel decorative cover body rotatably connected to the logo structure.

[0013] In an optional embodiment of the present invention, the rack is also provided with an emergency stop switch electrically connected to the control unit.

[0014] In an optional embodiment of the present invention, the connecting unit is a clamping mechanism.

[0015] In an optional embodiment of the present invention, the distance between the clamping jaws of the clamping mechanism clamping the rotating assembly is adjustable.

[0016] In an optional embodiment of the present invention, the clamping mechanism comprises at least three clamping jaws uniformly arranged along the circumferential direction; the inner side surface of each of the clamping jaws is provided with a plurality of step structures arranged along the length direction of the clamping jaw and having different heights;

[0017] A groove is arranged on each of the step structures, a side surface of each of the step structures facing the center of the clamping mechanism is a clamping surface, and each of the grooves is recessed from the clamping surface to a radial direction away from the center of the clamping mechanism.

[0018] In an optional embodiment of the present invention, the clamping mechanism further comprises a base fixedly connected to the rotation output end of the rotation drive unit, and a plurality of the clamping claws are evenly spaced and fixed on the base.

[0019] In an optional embodiment of the present invention, the angle measurement unit is a scale plate.

[0020] In an optional embodiment of the present invention, the scale plate is a ring-shaped or arc-shaped structure.

[0021] In an optional embodiment of the present invention, the angle measurement unit further includes a grating for detecting foreign matter, and the grating is electrically connected to the control unit.

[0022] In an optional embodiment of the present invention, a laser component is further included. The laser component is detachably mounted on the marking structure, and a laser head of the laser component is vertically oriented toward the scale plate.

[0023] The technical effect of the utility model is that the connecting unit is driven to rotate by the rotary drive unit, and the connecting unit drives the rotating component that is rotationally connected to the marking structure to rotate. By adjusting the rotation conditions of the rotary drive unit, qualified suspended wheel decorative covers can be screened out, thereby ensuring product quality and meeting the swing test requirements of finished or semi-finished products of the suspended wheel decorative covers. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A three-dimensional structural schematic diagram of a test device according to an embodiment of the utility model;

[0025] Figure 2 An exploded diagram of a test device according to an embodiment of the utility model;

[0026] Figure 3 A cross-sectional view of a testing device according to an embodiment of the present utility model;

[0027] Figure 4 This is a schematic diagram of the structure of a clamping mechanism according to an embodiment of the utility model;

[0028] Figure 5 This is a schematic diagram of the structure of an angle measurement unit according to an embodiment of the utility model;

[0029] Figure 6 This is a schematic diagram of the three-dimensional structure of a suspended wheel decorative cover according to an embodiment of the utility model;

[0030] Figure 7 This is a schematic diagram of the side structure of a suspended wheel decorative cover according to an embodiment of the utility model;

[0031] Figure numerals: suspended wheel decoration cover 100, wheel decoration cover body 101, mounting portion 1011, marking structure 10, frame 1, rotation drive unit 2, output end 21, connecting unit 3, clamping mechanism 31, clamping claw 311, groove 3111, base 312, angle measuring unit 4, scale plate 41, control unit 5, control panel 51, emergency stop switch 52, start switch 53, grating 6. DETAILED DESCRIPTION

[0032] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0033] It should be noted that the illustrations provided in the following embodiments are only used to schematically illustrate the basic concept of the present invention, and thus the illustrations only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0034] like Figure 6-7 As shown, in this case, the suspension component includes a rotating component, a logo structure 10 and a counterweight, and the counterweight is arranged on the logo structure 10 or on the connection portion where the rotating component and the logo structure 10 are connected. For example, when the rotating component is a bearing, when the outer ring of the bearing is connected to the logo structure 10, the counterweight can be connected to the outer ring of the bearing; the suspension component can be a finished product of the suspended wheel decorative cover 100, or it can be a semi-finished product of the suspended wheel decorative cover 100; the semi-finished product of the suspended wheel decorative cover 100 can only include a rotating component, a logo structure 10 and a counterweight; the suspended wheel decorative cover 100 includes a wheel decorative cover body 101, and the wheel decorative cover body 101 includes a bearing; the wheel decorative cover body 101 is directly or indirectly rotatably connected to the logo structure 10 through a bearing; the rotating component can be a bearing or a wheel decorative cover body 101; the wheel decorative cover body 101 is fixedly connected to the wheel, such as a fastener connection The logo structure 10 is connected or snap-fitted, and a counterweight is installed on the logo structure 10, so that the bearing is always subjected to a lateral force; because the force applied to the bearing will cause bending moment, under the action of the counterweight, the direction of the logo structure 10 on the wheel decorative cover body 101 is always relatively fixed, and maintains the same direction during the driving of the vehicle, and the logo structure 10 always remains in a non-rotating state relative to the ground on the rapidly rotating wheel; in this process, the weight of the corresponding counterweight and the selection of the bearing are very important, which affect the orientation of the logo structure 10. The weight of the counterweight and the starting torque of the bearing, and the running resistance are all influencing factors. It can be said that if the counterweight and the bearing are not selected properly, the logo structure 10 will have a larger rotation angle during operation as the vehicle speed changes, thereby affecting the appearance of the vehicle. Therefore, this case requires testing equipment to test the suspension component to determine whether the finished product or semi-finished product of the suspended wheel decorative cover 100 meets the use requirements.

[0035] Generally, after multiple tests are performed to determine the weight of the counterweight, the subsequent floating wheel decorative cover 100 of the same model can use the counterweight of the same weight, which can generally meet the use requirements and reduce the separate test for the counterweight; and the rotation test of each bearing to determine whether the bearing meets the use requirements is generally not exempted. However, when each bearing is in use, the rotation resistance between the inner ring and the outer ring may be different. The test is used to select the bearing whose rotation resistance is less than the predetermined threshold to meet the use requirements.

[0036] like Figure 1-3 As shown, the utility model provides a test device for a suspension component, which at least includes a rotating component and a marking structure 10 that are rotatably connected. The test device includes a frame 1, a rotation drive unit 2, a connection unit 3 and an angle measurement unit 4; the rotation drive unit 2 is arranged on the frame 1; one end of the connection unit 3 is connected to the rotation output end 21 of the rotation drive unit 2, and the other end is used to fix the rotation component; the angle measurement unit 4 is arranged on the frame 1, and is used to measure the rotation angle of the marking structure 10, which is the elevation angle of the marking structure 10 in a suspended state when the suspension wheel decorative cover 100 is installed on the wheel for use.

[0037] It should be noted that the rotation drive unit 2 is an electric motor or a pneumatic motor or a hydraulic motor; the rotation drive unit 2 is welded to the frame 1 or connected by fasteners such as screws or bolts or other connection methods that meet the use requirements; one end of the connection unit 3 is connected to the rotation output end 21 of the rotation drive unit 2, for example, connected to the output shaft of the rotation drive unit 2; the other end of the connection unit 3 is fixedly connected to the rotating component, for example, it can be connected by fasteners, can be connected by snap-fitting, can be clamped and fastened or welded, and the angle measurement unit 4 can be a gyroscope, a magnetic angle sensor, a multi-degree-of-freedom sensor, an angle measurement Sensors, encoders, protractors, etc.; the rotating component is a component such as a bearing or a rotating shaft that meets the use requirements of this case; when the rotation drive unit 2 drives the suspension component to rotate, the angle measurement unit 4 is used to measure the rotation angle of the mark structure 10, by giving the rotation drive unit 2 a variety of predetermined speeds, accelerations, decelerations and other rotation conditions, when the rotation angle of the mark structure 10 is greater than the predetermined angle, the rotating component connected to the mark structure 10 or the combination of the rotating component and the counterweight block cannot meet the use requirements; when the rotation angle of the mark structure 10 is less than the predetermined angle, it means that the rotating component or the combination of the rotating component and the counterweight block meets the use requirements.

[0038] like Figure 1-3As shown, as an optional embodiment of the present case, a control unit 5 electrically connected to the rotation drive unit 2 is provided on the frame 1, and the control unit 5 is configured to control the rotation speed and / or rotation time and / or acceleration / deceleration time of the rotation drive unit 2.

[0039] It should be noted that the control unit 5 can be a microcomputer, a speed closed-loop controller, a frequency converter or other intelligent control systems; the speed closed-loop controller obtains the speed information of the motor by measuring the number of pulses per unit time and compares it with the target speed, and makes the deviation tend to zero by proportional, integral and differential (PID) control of the deviation, thereby achieving precise control of the motor speed; the frequency converter can change the frequency and voltage of the motor input power supply, thereby adjusting the motor speed, and is suitable for applications requiring variable speed operation; the intelligent control system combines a variety of control algorithms and sensor inputs to achieve more complex control strategies; the control unit 5 is configured to be able to control the speed and / or rotation time and / or acceleration and deceleration time of the rotation drive unit 2, and can also control the power, torque and other speed-related parameters of the rotation drive unit 2, so as to change the various rotation conditions of the suspension component to achieve the suspension component under a variety of conditions Testing, so as to determine whether the rotating component connected to the logo structure 10 meets the requirements, thereby achieving the test purpose of this case.

[0040] like Figure 1-3 As shown, as an optional embodiment of the present case, the rotating component is a bearing rotatably connected to the logo structure 10 or a wheel decoration cover body 101 rotatably connected to the logo structure 10 .

[0041] like Figure 1-2 As shown, as an optional embodiment of the present case, the rack 1 is also provided with an emergency stop switch 52 electrically connected to the control unit 5 .

[0042] It should be noted that the frame 1 is also provided with a start switch 53 electrically connected to the rotation drive unit 2, and / or the frame 1 is also provided with a main switch / emergency stop switch 52 electrically connected to the control unit 5; the start switch 53 is used to independently control the start and stop of the rotation drive unit 2; the main switch is the on and off switch of the test equipment; the emergency stop switch 52 is the emergency stop switch 52 for stopping the rotation of the rotation drive unit 2. The emergency stop switch 52 has the following functions: first, to protect the safety of personnel, and is used to quickly stop the operation of the test equipment in an emergency. Its main function is to protect the safety of personnel and equipment. When the operator encounters danger or the equipment fails, By pressing the emergency stop switch 52, the motor can be stopped immediately to avoid accidents. Second, to prevent equipment damage, when the machine encounters abnormal conditions, such as jamming, overloading, etc., which may cause equipment damage, the emergency stop switch 52 can quickly cut off the power supply to prevent the fault from expanding and reduce equipment damage. Third, to improve efficiency, when the corresponding suspended wheel decorative cover 100 or the rotating component rotatably connected to the logo structure 10 has been tested to be unqualified, the emergency stop switch 52 can be used to quickly stop the rotation of the suspended wheel decorative cover 100 or the rotating component, thereby facilitating the rapid disassembly of the suspended wheel decorative cover 100 or the rotating component, saving time and thus improving the efficiency of the test.

[0043] like Figure 1-4 As shown, as an optional embodiment of the present case, the connecting unit 3 is a clamping mechanism 31.

[0044] It should be noted that the clamping mechanism 31 is a rolling bearing clamping mechanism or a centering clamping mechanism or a three-jaw self-centering chuck or a four-jaw chuck or a spiral clamping mechanism or a lever clamping mechanism; the centering clamping mechanism realizes clamping and loosening through the action of a spring and the cooperation of an external plunger; the spiral clamping mechanism uses the self-locking performance of the spiral pair to achieve clamping, and it usually includes components such as a spiral pair, a pressure plate and a support seat. The spiral pair is driven by rotating the handle to move the pressure plate to clamp the workpiece. The lever clamping mechanism drives the lever to rotate around the fulcrum manually or pneumatically to generate a large clamping force. The lever ratio can be adjusted to change the size of the clamping force. It has the advantages of compact structure and flexible operation; in addition, there are various clamping methods such as wedge clamps, pneumatic clamping mechanisms, hydraulic clamping mechanisms, etc., each with its own characteristics and applicable occasions. In this case, the rotating component is directly clamped by the clamping mechanism 31, which can facilitate the installation and disassembly of the suspension component, thereby improving the efficiency of the test.

[0045] As an optional embodiment of the present case, the spacing between the clamping claws 311 of the clamping mechanism 31 clamping the rotating component is adjustable.

[0046] It should be noted that the clamping mechanism 31 can be a three-jaw self-centering chuck or a four-jaw chuck. When the spacing between the jaws 311 of the three-jaw self-centering chuck or the four-jaw chuck is adjustable, it can clamp and fix rotating components or suspended wheel decorative covers 100 of different sizes. It should be noted that the jaws 311 in this embodiment can slide in the track and move closer to or farther away from each other.

[0047] As an optional embodiment of the present case, the clamping mechanism 31 includes at least three clamping jaws 311 evenly arranged along the circumferential direction; the inner side surface of each clamping jaw 311 is provided with a plurality of step structures arranged along the length direction of the clamping jaw 311 and having different heights;

[0048] A groove 3111 is provided on each of the step structures, a side surface of each of the step structures facing the center of the clamping mechanism 31 is a clamping surface, and each of the grooves 3111 is recessed from the clamping surface to a radial direction away from the center of the clamping mechanism 31 .

[0049] It should be noted that the number of the clamping jaws 311 is three or four or more, and the inner side of the clamping jaws 311 is the center direction of the clamping mechanism 31. The multiple step structures on each clamping jaw 311 are arranged in sequence along the length direction of the clamping jaw 311 and the height changes in sequence. Along the axial direction of the clamping mechanism 31, there are multiple step structures on the same cross section perpendicular to the axial direction. The multiple step structures have the same size in the radial direction of the clamping mechanism 31; the step structures on multiple cross sections along the axial direction of the clamping mechanism 31 can form multiple circular clamping levels with different diameters, which can realize the clamping of suspension components of different sizes. By setting grooves 3111 on the clamping surfaces of each step structure, it can be stably matched with the rotating component and the clamping safety is improved.

[0050] As another optional embodiment of the present case, the clamping mechanism 31 further includes a base 312 fixedly connected to the rotation output end of the rotation driving unit 2 , and a plurality of the clamping jaws 311 are evenly spaced and fixed on the base 312 .

[0051] It should be noted that when the base 312 is fixedly connected to the clamping jaw 311, there are two ways to make the clamping mechanism 31 clamp the rotating component. First, the material of the clamping jaw 311 is a material with a certain deformation ability, such as a plastic material, which can produce a certain deformation to achieve the engagement of the rotating component; second, the rotating component includes a mounting portion 1011, and the clamping jaw 311 of the clamping mechanism 31 is clamped on the mounting portion 1011, and the mounting portion 1011 is a material with a certain deformation ability, such as a plastic material or a metal spring material, etc., so as to achieve the engagement and fixation between the clamping jaw 311 and the rotating component. These two methods can eliminate the trouble of adjusting the spacing between the clamping jaws 311.

[0052] like Figure 1-3 As shown in , 5 , as an optional embodiment of the present case, the angle measurement unit 4 is a scale plate 41 .

[0053] It should be noted that the scale of the scale plate 41 can be engraved on the frame 1 to form the scale plate 41, and the scale plate 41 can also be an independent structural member, which is generally bonded or welded or connected to the frame 1 through fasteners; the scale plate 41 has a simple structure and a low price, which is conducive to reducing the manufacturing cost and structural complexity of the test equipment. In this case, the scale line of the scale plate 41 is used as a reference to quickly determine whether the target product is qualified or unqualified during the production process, so that the target product has a 100% qualified rate when leaving the factory, avoiding market problems.

[0054] like Figure 1-3 As shown in FIG. 5 , as an optional embodiment of the present case, the scale plate 41 is a ring-shaped or arc-shaped structure, and the center point of the circle where the arc of the scale plate 41 is located coincides with the axis of the rotation drive unit 2 .

[0055] like Figure 1-3 As shown, as an optional embodiment of the present case, the angle measurement unit 4 also includes a grating 6 for detecting foreign matter, and the grating 6 is electrically connected to the control unit 5.

[0056] It should be noted that since the rotation drive unit 2 drives the suspension component to rotate, there is a certain danger. Therefore, by setting the grating 6, when a human body or an object approaches the suspension component, the control unit 5 receives the detection signal of the grating 6 and controls the rotation drive unit 2 to slow down or stop, so that the suspension component does not rotate or the rotating suspension component slows down and stops, so as to protect the safety of the tester.

[0057] like Figure 1-3 As shown, as an optional embodiment of the present case, the testing equipment further includes a laser component, which is detachably mounted on the marking structure 10 , and the laser head of the laser component is vertically facing the scale plate 41 .

[0058] It should be noted that the laser component is a micro laser, such as a laser lamp. For example, a small laser lamp with a length of less than six centimeters can be selected. When the laser lamp is turned on, the light beam of the laser lamp is vertically irradiated toward the scale of the scale plate 41. After the rotation drive unit 2 drives the rotating component to rotate, the position change on the scale plate 41 can be irradiated by the light beam of the laser lamp, so as to quickly and accurately determine whether the corresponding suspension component meets the use requirements, thereby achieving the purpose of the test.

[0059] As an optional embodiment of the present case, the frame 1 is also provided with a control panel 51 electrically connected to the control unit 5, so that the tester can adjust parameters such as the rotation speed and / or rotation time and / or acceleration and deceleration time of the rotary drive unit 2 through the control panel 51.

[0060] As an optional embodiment of the present case, the frame 1 is further provided with an alarm electrically connected to the control unit 5. When the angle measurement unit 4 detects that the rotation angle of the marking structure 10 exceeds a preset value, the alarm electrically connected to the control unit 5 will sound an alarm, and the alarm includes a sound alarm and / or a light alarm, thereby reminding the tester. When a large number of suspension components need to be tested, an alarm is sounded through the alarm on each device, so that a tester can test on multiple devices at the same time.

[0061] Furthermore, the frame 1 is a cabinet structure, and part of the structure of the rotation drive unit 2 and the control unit 5 are located inside the cabinet.

[0062] As an optional embodiment of the present case, in the present case, the main switch / emergency stop switch 52 is an emergency stop button for emergencies during the startup and operation of the control panel 51 of the computer host.

[0063] As an optional embodiment of the present case, the control unit 5 can be a computer host, which is the core control position of the equipment operation. The program is concentrated here, and the rotation speed, number of revolutions, time, etc. can be adjusted and controlled. The computer host includes a storage unit, through which the inspected target product can be recorded in the background for easy traceability.

[0064] Furthermore, the computer host can be placed on the cabinet structure, and the main switch / emergency stop button can be connected to the computer host through a wiring harness to facilitate turning on the computer host or emergency stop. The wiring harness is connected between the computer host and the motor, and the speed, number of revolutions, etc. of the motor are controlled by the computer host. After the suspension component is installed on the clamp 311, it is controlled and rotated according to the control panel 51. The elevation angle of the suspended wheel decorative cover 100 is manually determined according to the annular or arc-shaped scale and recorded in the computer host.

[0065] Usage steps: clamp the suspended wheel decorative cover 100 between the two clamping claws 311, and open the control panel 51 through the main switch of the computer host; input the number of motor revolutions and revolutions on the control panel 51; start the computer host determination program through the start switch 53 to determine whether there is an obstacle at the position of the grating 6, and start the motor when there is no obstacle; the operator records the elevation angle of the mark structure 10 of the suspended wheel decorative cover 100 according to the swing angle of the mark structure 10 on the scale plate 41.

[0066] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

[0067] In the description herein, many specific details, such as examples of components and / or methods, are provided to provide a complete understanding of the embodiments of the present invention. However, those skilled in the art will recognize that embodiments of the present invention may be practiced without one or more specific details or by other devices, systems, components, methods, components, materials, parts, etc. In other cases, well-known structures, materials, or operations are not specifically shown or described in detail to avoid obscuring aspects of the embodiments of the present invention.

[0068] Thus, although the present invention has been described herein with reference to specific embodiments thereof, freedom of modification, various changes and substitutions are also within the above disclosure, and it should be understood that in some cases, some features of the present invention will be adopted without corresponding use of other features without departing from the scope and spirit of the proposed utility model. Therefore, many modifications can be made to adapt specific environments or materials to the essential scope and spirit of the present utility model. The present utility model is not intended to be limited to the specific terms used in the claims below and / or the specific embodiments disclosed as the best mode for carrying out the present utility model, but the present utility model will include any and all embodiments and equivalents falling within the scope of the appended claims. Therefore, the scope of the present utility model will be determined solely by the appended claims.

Claims

1. A test device for a suspension assembly, the suspension assembly comprising at least a rotation assembly and a marking structure connected in rotation, characterized in that: The test equipment includes: frame; A rotation driving unit is arranged on the frame; A connecting unit, one end of which is connected to the rotation output end of the rotation driving unit, and the other end of which is used to fix the rotating assembly; The angle measuring unit is arranged on the frame and is used to measure the rotation angle of the marking structure.

2. The test device according to claim 1, characterized in that The frame is provided with a control unit electrically connected to the rotation drive unit; The control unit is configured to control the rotation speed and / or the rotation time and / or the acceleration / deceleration time of the rotary drive unit.

3. The testing device according to claim 1, characterized in that The rotating component is a bearing rotatably connected to the logo structure or a wheel decorative cover body rotatably connected to the logo structure.

4. The testing device according to claim 1, characterized in that The connecting unit is a clamping mechanism.

5. The testing device according to claim 4, characterized in that The distance between the clamping jaws of the clamping mechanism clamping the rotating assembly is adjustable.

6. The testing device according to claim 4, characterized in that The clamping mechanism comprises at least three clamping jaws uniformly arranged along the circumferential direction; the inner side surface of each clamping jaw is provided with a plurality of step structures arranged along the length direction of the clamping jaw and having different heights; Each of the step structures is provided with a groove, a side surface of each of the step structures facing the center of the clamping mechanism is a clamping surface, and each of the grooves is recessed from the clamping surface in a radial direction away from the center of the clamping mechanism.

7. The testing device according to claim 6, characterized in that The clamping mechanism also includes a base fixedly connected to the rotation output end of the rotation driving unit, and a plurality of the clamping claws are evenly spaced and fixed on the base.

8. The testing device according to claim 1, characterized in that The angle measurement unit is a scale plate.

9. The testing device according to claim 2, characterized in that: The angle measurement unit further includes a grating for detecting foreign matter, and the grating is electrically connected to the control unit.

10. The testing device according to claim 8, characterized in that It also includes a laser component, which is detachably mounted on the marking structure, and a laser head of the laser component is vertically oriented toward the scale plate.

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