Four-wheel aligner

Abstract

The utility model provides a four-wheel aligner. The four-wheel aligner comprises four four-wheel positioning measurement devices and two four-wheel positioning calibration devices, the four four-wheel positioning measurement devices are used for being placed on the sides of four tires of a vehicle to be positioned in a one-to-one correspondence mode, and a four-wheel positioning calibration device is arranged between the two four-wheel positioning measurement devices located on one side of the vehicle to be positioned. A four-wheel positioning calibration device is arranged between the two four-wheel positioning measurement devices located on the other side of the vehicle to be positioned, and the two four-wheel positioning calibration devices are oppositely arranged on the two sides of the vehicle to be positioned; the four-wheel positioning and measuring device is used for acquiring an image of a tire to analyze positioning information of the tire; the four-wheel positioning calibration device is used for calibrating the four-wheel positioning measurement device and the four-wheel positioning calibration device on the opposite side. The four-wheel aligner obtains the positioning information of the tire in a non-contact measurement mode, so that the tire is prevented from being damaged, and meanwhile, the adjustment convenience degree of the four-wheel aligner is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of vehicle tire inspection, and more specifically, to a four-wheel alignment device. Background Technology

[0002] The installation of a vehicle's steering wheels, steering knuckles, and front axle involves specific relative positions. This installation with defined relative positions is called steering wheel alignment, also known as front wheel alignment. Front wheel alignment includes four components: caster angle, kingpin inclination angle, camber angle, and toe-in. This applies to the two front steering wheels. Similarly, the two rear wheels also have relative positions with the rear axle, which is called rear wheel alignment. Rear wheel alignment includes camber angle and individual rear wheel toe-in. This combination of front and rear wheel alignment is called four-wheel alignment.

[0003] Existing four-wheel alignment machines measure the relative position and tilt angle of the tires using measuring components to obtain parameter information for all four tires, thereby analyzing the four-wheel alignment information. Currently, some four-wheel alignment machines on the market clamp the measuring components to the tire rims for measurement, which can easily damage the tire rims. At the same time, the clamping method makes it difficult to adjust the measuring components' position, resulting in low accuracy of the measurement results. Utility Model Content

[0004] The purpose of this invention is to provide a four-wheel alignment instrument to solve the technical problems of existing four-wheel alignment instruments, such as easy damage to tires, difficulty in adjusting the measurement position, and low accuracy of measurement results.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] Firstly, a four-wheel alignment device is provided, comprising:

[0007] The system includes four four-wheel alignment measuring devices and two four-wheel alignment calibration devices. The four four-wheel alignment measuring devices are positioned one-to-one beside the four tires of the vehicle to be aligned. A four-wheel alignment calibration device is located between the two measuring devices on one side of the vehicle, and another between the two measuring devices on the other side. The two four-wheel alignment calibration devices are positioned opposite each other on both sides of the vehicle. The four-wheel alignment measuring devices acquire images of the tires to analyze their alignment information. The four-wheel alignment calibration devices calibrate the four-wheel alignment measuring devices and the four-wheel alignment calibration devices on the opposite sides.

[0008] By adopting the above technical solution;

[0009] The four-wheel alignment measuring device corresponds one-to-one with each of the vehicle's four tires to obtain tire alignment information by acquiring tire images. In this way, the four-wheel alignment measuring device obtains tire alignment information in a non-contact measurement manner, avoiding damage to the tires, and improving the ease of adjustment of the four-wheel alignment measuring device and the four-wheel alignment calibration device. In addition, one four-wheel alignment calibration device can perform calibration operations on two four-wheel alignment measuring devices located on the same side of the vehicle as well as four-wheel alignment calibration devices on opposite sides, improving the accuracy of the four-wheel alignment measuring device and the four-wheel alignment calibration device in calibrating their own positions, and also saving the number of four-wheel alignment calibration devices required.

[0010] In one embodiment, the four-wheel alignment system further includes a user terminal, which is communicatively connected to the four-wheel alignment measuring device and the four-wheel alignment calibration device. The user terminal is used to receive, display, and send measurement information obtained by the four-wheel alignment measuring device and calibration information obtained by the four-wheel alignment calibration device.

[0011] In one embodiment, the four-wheel alignment device further includes multiple fixing components, which are disposed on the four-wheel alignment measuring device and the four-wheel alignment calibration device, and are used to be fixedly connected to the lift carrying the vehicle.

[0012] In one embodiment, the fastener is a magnetic component capable of being magnetically attached to the lift of the vehicle.

[0013] In one embodiment, the four-wheel alignment measuring device includes a support base, a support rod connected to one end of the support base, a laser device, and a first camera device mounted on the support rod. The length direction of the support rod forms an angle with the length direction of the support base. The laser device is used to project a laser image onto the tire surface, and the first camera device is used to acquire the laser image and obtain the tire's positioning information from the laser image.

[0014] In one embodiment, the laser device includes an inclined support and a laser module disposed on the inclined support; the inclined support is used to support the laser module, such that the central axis of the laser module is inclined at an angle to the plane where the hub of the tire to be tested is located, and the laser module projects a laser image from the inclined support toward the surface of the tire to be tested.

[0015] In one embodiment, the four-wheel alignment measuring device further includes a second camera device disposed on the support base, the second camera device being used to acquire images of the four-wheel alignment calibration device to calibrate its own position.

[0016] In one embodiment, the second camera device includes: a second camera housing disposed on the support base and a second camera main unit disposed in the second camera housing; wherein, the second camera housing is provided with a receiving cavity and a second camera opening communicating with the receiving cavity, the second camera main unit is disposed in the receiving cavity, the second camera main unit is used to capture images through the second camera opening, and the extension direction of the central axis of the second camera main unit forms an inclined angle with the extension direction of the line connecting the second camera device and the four-wheel alignment calibration device for calibrating the second camera device.

[0017] In one embodiment, the four-wheel alignment calibration device includes a calibration base, a calibration component, a third camera device, and a camera device connector. The calibration base defines at least two calibration directions parallel to the calibration base. The calibration component is disposed on the calibration base and located in the calibration directions. One end of the camera device connector is connected to the calibration base, and the other end of the camera device connector is connected to the third camera device, such that the projections of the third camera device and the calibration component along any of the calibration directions do not coincide.

[0018] In one embodiment, the camera device connector includes a first connecting segment and a second connecting segment connected to the first connecting segment; the first connecting segment is used to connect to a calibration base and extends along a first direction perpendicular to the side; the second connecting segment is used to connect to a third camera device and extends along a second direction perpendicular to the first direction, enabling the third camera device to photograph another calibration base while avoiding the side of the calibration base. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural diagram of the four-wheel alignment device provided in this embodiment of the utility model;

[0021] Figure 2 This is a three-dimensional structural diagram of the four-wheel alignment measuring device provided in this embodiment of the utility model;

[0022] Figure 3 This is a three-dimensional structural diagram of the support base provided in this embodiment of the utility model;

[0023] Figure 4 This is an exploded view of the support base provided in an embodiment of this utility model;

[0024] Figure 5 This is a three-dimensional structural diagram of the support rod provided in an embodiment of this utility model;

[0025] Figure 6 This is a perspective structural diagram of the first camera device provided in this embodiment of the present utility model;

[0026] Figure 7 This is an exploded view of the first camera device provided in this embodiment of the present invention;

[0027] Figure 8 This is a cross-sectional view of the first camera device provided in this embodiment of the present invention;

[0028] Figure 9 This is an exploded view of the laser device provided in this embodiment of the present invention;

[0029] Figure 10 This is a three-dimensional structural diagram of the four-wheel alignment and calibration device provided in this embodiment of the utility model.

[0030] The labels for the attached figures are as follows:

[0031] 1. Four-wheel alignment measuring device; 2. Four-wheel alignment calibration device; 3. Lift; 4. Fixture; 5. Second camera device;

[0032] 11. Support base; 12. Laser device; 13. Support rod; 14. Laser device; 15. First camera device; 21. Calibration base; 22. Calibration component; 24. Third camera device; 25. Camera device connector; 26. Calibration cover; 31. Positioning base; 51. Second camera housing; 52. Second camera main unit; 53. Second camera opening;

[0033] 111. Support housing; 112. Power supply component; 121. First support part; 122. Second support part; 141. First camera housing; 142. First camera main unit; 143. First lens; 144. First camera opening; 131. Slanted bracket; 132. Laser module; 251. First connecting section; 252. Second connecting section; 221. Calibration rod

[0034] 1111, First connecting end; 1112, Second connecting end; 1441, Convex through surface. Detailed Implementation

[0035] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0036] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be located directly on or indirectly on the other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to the other component.

[0037] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" 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 utility model and do not indicate that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating relative importance or the number of technical features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. The specific implementation of this utility model is described in more detail below with reference to specific embodiments:

[0039] like Figure 1 As shown in the figure, an embodiment of the present invention provides a four-wheel alignment device, comprising:

[0040] The system includes four four-wheel alignment measuring devices 1 and two four-wheel alignment calibration devices 2. The four four-wheel alignment measuring devices 1 are placed one-to-one with each of the four tires of the vehicle to be aligned. A four-wheel alignment calibration device 2 is provided between the two four-wheel alignment measuring devices 1 located on one side of the vehicle to be aligned, and a four-wheel alignment calibration device 2 is provided between the two four-wheel alignment measuring devices 1 located on the other side of the vehicle to be aligned. The two four-wheel alignment calibration devices 2 are positioned opposite each other on both sides of the vehicle to be aligned. The four-wheel alignment measuring devices 1 are used to acquire images of the tires to analyze the tire alignment information. The four-wheel alignment calibration devices 2 are used to calibrate the four-wheel alignment measuring devices 1 and the four-wheel alignment calibration devices 2 on the opposite side.

[0041] The working principle of the four-wheel alignment system provided in this embodiment is as follows:

[0042] This embodiment of the four-wheel alignment system is described by setting a vehicle-carrying lift 3 including a positioning seat 31. When the vehicle enters the interior of the vehicle-carrying lift 3, the positioning seat 31 is used to support the vehicle's tires. Here, it can be understood that the positioning seat 31 is used to support the vehicle's tires. The positioning seat 31 has a certain length and can be used to simultaneously support the front and rear wheels located on the same side of the vehicle. Therefore, there can be two positioning seats 31, that is, two positioning seats 31 are arranged at intervals and respectively correspond to the front and rear wheels on the left and right sides of the vehicle. The vehicle-carrying lift 3 forms a positioning space for the vehicle to enter. When the vehicle enters the positioning space, the front and rear wheels of the vehicle can just stop on the positioning seat 31, that is, the front and rear wheels of the vehicle stop on the same positioning seat 31 at the same time.

[0043] For example, the positioning base 31 can be made of a magnetic material, making it magnetic so that the four-wheel alignment calibration device 2 and the four-wheel alignment measuring device 1 can be magnetically attracted to the positioning base 31; for example, the positioning base 31 can be made of a magnetic metal, making the entire positioning base 31 magnetic, so that the four-wheel alignment calibration device 2 and the four-wheel alignment measuring device 1 can be magnetically attracted to any position of the positioning base 31; or, some parts of the positioning base 31 are magnetic parts, making them magnetic, so that the four-wheel alignment calibration device 2 and the four-wheel alignment measuring device 1 can be magnetically attracted to any position of the magnetic part of the positioning base 31.

[0044] The four-wheel alignment measuring device 1 can be positioned beside the tire, that is, directly opposite the tire rim. The four-wheel alignment measuring device 1 can be magnetically attached to any position on the alignment base 31. The four-wheel alignment measuring device 1 is used to acquire tire alignment information. The position of the four-wheel alignment measuring device 1 on the alignment base 31 can be adjusted to align with the tire for measurement. Furthermore, the four-wheel alignment measuring device 1 can be fixed at any position on the alignment base 31 to accommodate tire measurements for different vehicles.

[0045] The four-wheel alignment calibration device 2 can be magnetically attached to a preset position on the magnetic part of the alignment base 31. The four-wheel alignment calibration device 2 is used to calibrate the position of the four-wheel alignment measuring device 1. Here, it can be understood that the four-wheel alignment calibration device 2 is used to calibrate the position of the four-wheel alignment measuring device 1 so that the four-wheel alignment measuring device 1 is in the correct measuring position. It needs to be further explained that when the four-wheel alignment calibration device 2 is fixed in the preset position, the four-wheel alignment calibration device 2 serves as the initial value of the position coordinate system. The four-wheel alignment measuring device 1 determines its own position by acquiring the four-wheel alignment calibration device 2, thereby calibrating whether it is in the correct measuring position. The preset position of the alignment base 31 can be a fixed position on the alignment base 31 or a non-fixed position on the alignment base 31, that is, the preset position can change with the vehicle to be four-wheel aligned.

[0046] The vehicle is driven into the lift 3, with the front and rear wheels of the vehicle resting on the same positioning seat 31. The four-wheel alignment calibration device 2 is placed in a preset position on the positioning seat 31, and the four-wheel alignment measuring device 1 is placed on the positioning seat 31 corresponding to the vehicle's tires. The four-wheel alignment calibration device 2 is located between the two four-wheel alignment measuring devices 1. The four-wheel alignment measuring device 1 obtains the calibration information from the four-wheel alignment calibration device 2 and uses the four-wheel alignment calibration device 2 as a reference to determine that it is in the correct measurement position. The four-wheel alignment calibration devices 2 located on opposite sides calibrate their positions with each other. When the four-wheel alignment measuring device 1 recognizes that it is in the correct measurement position, it performs tire alignment measurement.

[0047] By adopting the above technical solution;

[0048] The four-wheel alignment measuring device 1 corresponds one-to-one with each of the vehicle's four tires to obtain tire alignment information by acquiring tire images. In this way, the four-wheel alignment measuring device 1 obtains tire alignment information in a non-contact measurement manner, avoiding damage to the tires, and improving the ease of adjustment of the four-wheel alignment measuring device 1 and the four-wheel alignment calibration device 2. In addition, one four-wheel alignment calibration device 2 can perform calibration operations on two four-wheel alignment measuring devices 1 located on the same side of the vehicle and four-wheel alignment calibration devices 2 on opposite sides, improving the accuracy of the four-wheel alignment measuring device 1 and four-wheel alignment calibration device 2 in calibrating their own positions, and also saving the number of four-wheel alignment calibration devices 2 required.

[0049] In one embodiment, the four-wheel alignment system further includes a user terminal, which is communicatively connected to the four-wheel alignment measuring device 1 and the four-wheel alignment calibration device 2. The user terminal is used to receive, display, and send measurement information obtained by the four-wheel alignment measuring device 1 and calibration information obtained by the four-wheel alignment calibration device 2.

[0050] Here, it can be understood that the user terminal is equipped with a communication device that communicates with the four-wheel alignment measuring device 1 and the four-wheel alignment calibration device 2. The communication device includes, but is not limited to, a wireless communication connector, and the wireless communication method includes, but is not limited to, Wi-Fi wireless connection and Bluetooth wireless connection. The user terminal is also equipped with a display device for displaying measurement information and calibration information. Similarly, the four-wheel alignment measuring device 1 and the four-wheel alignment calibration device 2 are also equipped with a communication device that communicates with the user terminal.

[0051] By adopting the above technical solution, the measurement information and calibration information of the four-wheel alignment measuring device 1 and the four-wheel alignment calibration device 2 are all collected on the user terminal, which facilitates unified analysis, display and external transmission.

[0052] In one embodiment, the four-wheel alignment device further includes a plurality of fixing members 4, which are disposed on the four-wheel alignment measuring device 1 and the four-wheel alignment calibration device 2, and are used to be fixedly connected to the lift 3 that carries the vehicle.

[0053] Here, it can be understood that the fastener 4 includes, but is not limited to, magnetic components and snap-fit ​​components.

[0054] By adopting the above technical solution, the four-wheel alignment measuring device 1 and the four-wheel alignment calibration device 2 are fixedly connected to the lift 3.

[0055] In one embodiment, the fastener 4 is a magnetic component capable of being magnetically attached to the lift 3 that carries the vehicle.

[0056] By adopting the above technical solution, the four-wheel alignment measuring device 1 and the four-wheel alignment calibration device 2 are magnetically fixedly connected to the lift 3.

[0057] Please refer to the following: Figure 2 In one embodiment, the four-wheel alignment measuring device 1 includes a support base 11, a support rod 12, a laser device 13, and a first camera device 14 mounted on the support rod 12. The length direction of the support rod 12 forms an inclined angle with the length direction of the support base 11. The fixing member 4 is used to fix the four-wheel alignment measuring device 1. The laser device 13 is used to project a laser image onto the tire surface. The first camera device 14 is used to acquire the laser image and obtain the tire positioning information from the laser image.

[0058] Here, it can be understood that the support rod 12 is used to support the first camera device 14, so that when the four-wheel alignment measuring device 1 is fixed on the lift 3 carrying the vehicle, the laser device 13 and the first camera device 14 are in the correct measuring position. Optionally, the laser device 13 is mounted on the support base 11 or the support rod 12, and the laser device 13 is used to project a laser onto the tire, forming a laser image on the tire surface. The first camera device 14 is mounted on the support rod 12, and the first camera device 14 is used to capture the laser image on the tire surface and analyze the laser image to finally obtain... Tire positioning information; the laser device 13 can be selected as a laser projection device, which projects multiple laser beams onto the surface of the tire to form laser spots on the tire surface, i.e., forming a laser image. The first camera device 14 can be selected as a first camera device, which captures multiple laser spots. By analyzing the length, spacing, deformation, and other data of the multiple laser spots, the tire positioning information is finally obtained, such as the tire tilt angle. It needs to be further explained that the length direction of the support rod 12 is tilted at an angle to the length direction of the support base 11, and the support base 11 is used with... To fix the entire four-wheel alignment measuring device 1, in this embodiment, one end of the support base 11 is connected to the lift 3 of the vehicle, that is, the support base 11 is set close to the tire, and the support rod 12 is inclined so that the first camera device 14 can be close to the tire, which facilitates the first camera device 14 to obtain a clear laser image. At the same time, this design also makes the center of gravity of the first camera device 14 close to the tire, avoiding the entire four-wheel alignment measuring device 1 from tilting due to the excessive weight of the first camera device 14; in addition, when the laser device 13 is set on the support base 11, this design... The design ensures a certain distance between the laser device 13 and the tire, guaranteeing the projection range of the laser device 13, avoiding significant distortion of the laser image projected onto the tire surface, improving the clarity of the laser image, and enhancing the recognition accuracy of the first camera device 14. At the same time, this design also ensures that the center of gravity of the laser device 13 is as close to the tire as possible, reducing the possibility of the four-wheel alignment measuring device 1 tilting. In addition, this design reduces the angle between the laser image projected by the laser device 13 and the first camera device 14, reducing the recognition difficulty of the first camera device 14.

[0059] The working principle of the four-wheel alignment measuring device 1 provided in this embodiment is as follows:

[0060] The vehicle is stopped on the vehicle-carrying lift 3. The four-wheel alignment measuring device 1 is installed on the vehicle-carrying lift 3 and positioned close to the tires. Specifically, the position of the fixing member 4 is adjusted so that the laser device 13 and the first camera device 14 can be in the correct measurement position. The laser device 13 is activated to form a laser image on the tire surface. The first camera device 14 then captures the laser image and analyzes it to obtain the tire alignment information.

[0061] By adopting the above technical solution, the length direction of the support base 11 forms a first inclined angle with the length direction of the support rod 12. This design takes into account the projection range of the laser device 13, the center of gravity of the laser device 13 being close to the tire, and the angle between the laser image projected by the laser device 13 and the first camera device 14, thereby improving the accuracy of the measurement results, reducing the possibility of the four-wheel alignment measuring device 1 overturning, and enhancing the protective performance.

[0062] In one embodiment, the tilt angle ranges from 45° to 90°.

[0063] Alternatively, the tilt angle can be 45°, 60°, 75° or 90°.

[0064] Preferably, the tilt angle is 90°.

[0065] By adopting the above technical solution, when the first tilt angle is 90°, the support rod 12 is perpendicular to the support base 11, and the center of gravity of the support rod 12 coincides with its own center line. This design ensures that there is a certain distance between the first camera device 14 and the tire, which ensures that the first camera device 14 has a sufficient acquisition range, and also ensures that the center of gravity of the first camera device 14 will not be too far from the tire, thus increasing the risk of possible tilting.

[0066] Please refer to the following: Figure 3 and Figure 4 In one embodiment, the support base 11 includes a support housing 111 and a power supply unit 112 disposed inside the support housing 111; wherein, the support housing 111 is provided with a first connecting end 1111 and a second connecting end 1112 in its own length direction, the first connecting end 1111 is used to fix the four-wheel alignment measuring device 1, the second connecting end 1112 is used to connect to the first camera device 14 and the laser device 13, and the power supply unit 112 is located inside the housing at the first connecting end 1111, and the power supply unit 112 is used to electrically connect to the first camera device 14 and the laser device 13.

[0067] Here, it can be understood that the support housing 111 is used to protect the power supply component 112 inside the support housing 111, so that the power supply component 112 can avoid damage; the power supply component 112 is used to provide power to the first camera device 14.

[0068] Specifically, the support housing 111 has a first connecting end 1111 and a second connecting end 1112, wherein the first connecting end 1111 and the second connecting end 1112 are arranged opposite to each other and are located in the length direction of the support housing 111. The first connecting end 1111 is used to connect with the lift 3 that carries the vehicle, and the second connecting end 1112 is used to connect with the first camera device 14. The power supply unit 112 is used to electrically connect with the first camera device 14. The power supply unit 112 is relatively heavy, so it is located at the first connecting end 1111 so that the center of gravity of the entire support 11 can be set close to the vehicle.

[0069] The working principle of the support base 11 provided in this embodiment is as follows:

[0070] The first camera device 14 is placed on the second connecting end 1112 of the support base 11, and the first connecting end 1111 of the support base 11 is connected to the lift 3 carrying the vehicle. Since the support base 11 has a certain length, the support base 11 can form a preset distance between the first camera device 14 and the tires of the vehicle.

[0071] By adopting the above technical solution, since the power supply component 112 is relatively heavy, placing the power supply component 112 at the first connection end 1111 can make the center of gravity of the entire support 11 biased towards the vehicle. At the same time, since the power supply component 112, the first camera device 14, and the laser device 13 are located at opposite ends of the support 11, the power supply component 112 balances the influence of the gravity of the first camera device 14 and the laser device 13 on the support 11, reducing the possibility of the support 11 tilting and reducing the possibility of damage to the first camera device 14 and the laser device 13.

[0072] Please refer to the following: Figure 5 In one embodiment, the support rod 12 includes a first support portion 121 and a second support portion 122 connected to the first support portion 121; the first support portion 121 is used to fix the four-wheel alignment measuring device 1; the second support portion 122 is used to connect to the first camera device 14, the second support portion 122 extends from the first support portion 121 in a direction away from the tire, and the portion of the second support portion 122 away from the first support portion 121 is used to support the first camera device 14.

[0073] Here, it can be understood that the first support part 121 is used to connect with the lift 3 that carries the vehicle; the second support part 122 is used to connect with the first camera device 14;

[0074] Specifically, the first support part 121 connects the second support part 122 and the lift 3 carrying the vehicle. The first support part 121 is used to fix the second support part 122 relative to the lift 3 carrying the vehicle, and the second support part 122 is spaced a certain distance from the tire. The second support part 122 connects the first support part 121 and the first camera device 14. The second support part 122 is used to fix the first camera device 14 relative to the tire, and the first camera device 14 is spaced a preset distance from the tire.

[0075] It needs to be further explained that when the support rod 12 is connected to the lift 3 that carries the vehicle, the second support part 122 extends from the first support part 121 in a direction away from the vehicle. That is, the second support part 122 is set away from the tire of the vehicle relative to the first support part 121, so that the first camera device 14 on the second support part 122 can be away from the tire, ensuring that the first camera device 14 is spaced at a preset distance from the tire. Meanwhile, the first support part 121 is set closer to the tire of the vehicle relative to the second support part 122, so that the center of gravity of the entire support rod 12 is close to the vehicle, reducing the possibility of the support rod 12 tilting due to excessive distance from the vehicle.

[0076] By adopting the above technical solution, the second support part 122 extends from the first support part 121 in a direction away from the vehicle, so that the first camera device 14 on the second support part 122 can be set away from the tire, ensuring that the first camera device 14 and the tire have enough space to reserve a preset distance; at the same time, the first support part 121 is set closer to the tire than the second support part 122, so that the center of the entire support rod 12 is set close to the tire, reducing the side tilting phenomenon caused by the center of gravity of the support rod 12 being far away from the tire, and reducing the possibility of damage to the first camera device 14.

[0077] In one embodiment, when the first support portion 121 is connected to the lift 3 carrying the vehicle, the length direction of the first support portion 121 is parallel to the vertical direction.

[0078] Here, it can be understood that when the vehicle is being inspected, the rim of the vehicle's tire is perpendicular to the ground, that is, the surface of the rim is parallel to the vertical direction. At this time, the length direction of the first support 121 is set to be parallel to the vertical direction. This allows the second support 122 to have a certain height when supported by the first support 121, thereby allowing the first camera device 14 mounted on the second support 122 to have a certain height. This facilitates the first camera device 14 to correspond with the center position of the tire, so that the first camera device 14 can be within the normal measurement range.

[0079] It needs to be further explained that the first camera device 14 is used to measure the tire's positioning information. The first camera device 14 is used to take pictures or emit detection rays to obtain the tire's positioning information. In this embodiment, the length direction of the first support part 121 is arranged parallel to the vertical direction, which avoids the possibility that the first support part 121 will block the first camera device 14 and reduces the influence of the first support part 121 on the measurement results of the first camera device 14.

[0080] By adopting the above technical solution, the first support part 121 is set to be parallel to the vertical direction during the vehicle detection process, so as to avoid the possibility of the first support part 121 blocking the first camera device 14 and reduce the impact on the measurement results.

[0081] Here, it can be understood that within the aforementioned tilt angle range, the second support 122 can ensure that the first camera device 14 and the vehicle tires are kept at a sufficient distance; preferably, the tilt angle is 160°.

[0082] By adopting the above technical solution, a sufficient distance is reserved between the first camera device 14 on the second support part 122 and the vehicle tire.

[0083] Please refer to the following: Figures 6 to 8 In one embodiment, the first camera device 14 includes a first camera housing 141, a first camera host 142 disposed inside the first camera housing 141, and a first lens 143 connected to the camera of the first camera host 142; wherein, the first camera housing 141 is provided with a receiving cavity for accommodating the first camera host 142 and a first camera opening 144 communicating with the receiving cavity, the first lens 143 is disposed in the first camera opening 144, and the side of the first lens 143 facing away from the camera is provided with a convex surface 1441, the convex first lens 143 is used to reduce the focal length of the first camera host 142 to expand the viewing angle of the first camera host 142.

[0084] Here, it can be understood that the first camera housing 141 is used to protect and support the first camera host 142 and the first lens 143; the first camera host 142 is used to acquire tire images, thereby analyzing the tire's positioning information; the first lens 143 is used to adjust the focal length of the first camera host 142, thereby expanding the field of view of the first camera host 142, ensuring that even when the first camera host 142 is close to the tire, it can still obtain a complete image of the tire surface.

[0085] Specifically, the first camera housing 141 serves as both a protective and support component. The first camera housing 141 has a receiving cavity and a first camera opening 144. The receiving cavity is located inside the first camera housing 141, and the first camera opening 144 extends through the first camera housing 141 and communicates with the receiving cavity. The first camera host 142 is located within the receiving cavity, with its camera facing the first camera opening 144. The first lens 143 is located within the first camera opening 144 and covers the camera of the first camera host 142. The first lens 143 is a convex first lens 143, wherein a convex viewing surface 1441 is provided on the side of the first lens 143 facing away from the first camera host 142. The convex first lens 143 is used to reduce the focal length of the first camera host 142 to expand its viewing angle.

[0086] The working principle of the first camera device 14 provided in this embodiment is as follows:

[0087] The first camera device 14 is set up near the tire, and the camera is aimed at the tire surface to capture an image of the tire. Since a convex first lens 143 is provided on the front side of the camera, more reflected light from the tire surface can enter the convex first lens 143 through the convex lens 1441, and then enter the first camera host 142 through the convex first lens 143. That is, the focal length of the first camera host 142 is adjusted, the viewing angle of the first camera host 142 is increased, and thus the first camera host 142 can obtain a wider field of view. In this way, the first camera host 142 can obtain a more complete image of the tire at a closer distance.

[0088] By adopting the above technical solution, it is ensured that the first camera device 14 can still obtain a more complete tire image even when it is too close to the tire, thereby improving the amount of image recognition information and the accuracy of recognition.

[0089] In one embodiment, the central axis of the first camera host 142 forms an inclined angle with the length direction of the support base 11, and the angle range is 0° to 45°.

[0090] Here, it can be understood that the first camera host 142 is used to acquire laser images of the tire surface; during the measurement operation, the laser device 13 projects laser images onto the tire surface from below and diagonally upward, and the first camera host 142 captures laser images of the tire surface from above and diagonally downward.

[0091] It should be further explained that, optionally, the angle of inclination is 15° or 30°.

[0092] By adopting the above technical solution, the first camera host 142 is tilted, which is beneficial for acquiring laser images.

[0093] Please refer to the following: Figure 9 and Figure 10 In one embodiment, the laser device 13 includes a slanted support 131 and a laser module 132 disposed on the slanted support 131; the slanted support 131 is used to support the laser module 132, such that the central axis of the laser module 132 is inclined at an angle to the plane where the hub of the tire to be tested is located, and the laser module 132 projects a laser image from the slanted support 131 toward the surface of the tire to be tested.

[0094] Here, it can be understood that the inclined bracket 131 is used to support the laser module 132, that is, to support the laser module 132 at a suitable projection position, so that the laser image projected by the laser module 132 can cover the surface of the tire to be tested. The laser module 132 is fixed relative to the tire to be tested in an inclined state. That is, when the inclined bracket 131 supports the laser module 132, the central axis of the laser module 132 forms an inclined angle with the plane where the wheel hub of the tire to be tested is located. The laser module 132 is used to project a laser image onto the surface of the tire to be tested. The first camera device 14 acquires the laser image and analyzes the tire's positioning information based on the deformation and spacing of the laser image.

[0095] Specifically, the laser module 132 is mounted on the inclined support 131. The laser module 132 projects a laser image onto the surface of the tire, forming a laser image on the tire surface. The first camera device 14 captures the laser image on the tire surface and analyzes the laser image to obtain the tire's positioning information. The laser module 132 can project multiple laser beams onto the tire surface to form laser spots, i.e., a laser image. The first camera device 14 captures multiple laser spots and analyzes data such as the length, spacing, and deformation of the multiple laser spots to obtain the tire's positioning information, such as the tire's tilt angle. The laser module 132 is tilted under the support of the inclined support 131, i.e., it is aligned with the wheel of the tire being tested. The plane where the hub is located is at an angle, meaning that the laser device 13 emits laser light at an angle. This design ensures that the projection distance of the laser module 132 is maintained while keeping a small distance between the laser module 132 and the tire. This allows the laser to cover the tire surface, increasing the projection range of the laser and avoiding significant distortion of the laser image projected onto the tire surface. This improves the clarity of the laser image and enhances the recognition accuracy of the first camera device 14. At the same time, this design also ensures that the center of gravity of the laser module 132 is as close to the tire as possible, reducing the possibility of the four-wheel alignment measuring device 1 tilting. In addition, this design reduces the recognition difficulty of the first camera device 14 and improves the accuracy of the detection results of the vehicle detection equipment.

[0096] By adopting the above technical solution, while ensuring the miniaturization of the vehicle detection equipment and the small distance between the laser device 13 and the tire, the laser image projected by the laser device 13 covers the tire surface, thereby improving the recognition accuracy of the laser image and thus improving the accuracy of the detection results of the vehicle detection equipment.

[0097] In one embodiment, the tilt angle ranges from 0° to 60°.

[0098] Here, it can be understood that during the four-wheel alignment measurement operation, the laser device 13 is positioned on the side of the wheel hub facing the tire to be tested, and located diagonally below the wheel hub; the laser element is used to project a laser image onto the surface of the tire to be tested from diagonally below to diagonally above. At this time, the central axis of the laser element forms an angle with the plane where the wheel hub of the tire to be tested is located, and the angle ranges from 0° to 60°; the laser element projects the laser image onto the surface of the tire to be tested at the above-mentioned angle, expanding the area of ​​the laser image covering the tire, thereby improving the clarity of the laser image acquired by the first camera device 14, and thus improving the accuracy of the detection results of the vehicle detection equipment.

[0099] Optionally, the tilt angle can be in the range of 15°, 30° or 45°.

[0100] By adopting the above technical solution, the area covered by the laser image on the tire is expanded, thereby improving the clarity of the laser image acquired by the first camera device 14, and thus improving the accuracy of the detection results of the vehicle detection equipment.

[0101] In one embodiment, the four-wheel alignment measuring device 1 further includes a second camera device 5 disposed on the support base 11, the second camera device 5 being used to acquire images of the four-wheel alignment calibration device 2 to calibrate its own position.

[0102] Please refer to it again. Figures 2 to 4 In one embodiment, the second camera device 5 includes: a second camera housing 51 disposed on a support base 11 and a second camera host 52 disposed in the second camera housing 51; wherein, the second camera housing 51 is provided with a receiving cavity and a second camera opening 53 communicating with the receiving cavity, the second camera host 52 is disposed in the receiving cavity, the second camera host 52 is used to capture images through the second camera opening 53, and the extension direction of the central axis of the second camera host 52 forms an inclined angle with the extension direction of the line connecting the second camera device 5 and the four-wheel positioning calibration device 2 used to calibrate the second camera device 5.

[0103] By adopting the above technical solution, the second camera device 5 has a simple structure and high reliability.

[0104] Please refer to the following: Figure 10In one embodiment, the four-wheel alignment calibration device 2 includes a calibration base 21, a calibration component 22, a third camera device 24, and a camera device connector 25. The calibration base 21 defines at least two calibration directions parallel to the calibration base 21. The calibration component 22 is disposed on the calibration base 21 and located in the calibration direction. One end of the camera device connector 25 is connected to the calibration base 21, and the other end of the camera device connector 25 is connected to the third camera device 24, so that the projections of the third camera device 24 and the calibration component 22 along any calibration direction do not coincide.

[0105] Here, it can be understood that the calibration base 21 is used to support the calibration component 22; the calibration component 22 is used to provide calibration images to calibrate the positions of the four-wheel alignment measuring device 1 and the four-wheel alignment calibration device 2 on the opposite side; the third camera device 24 is used to acquire images of the four-wheel alignment calibration device 2 on the opposite side; and the camera device connector 25 is used to connect the third camera device 24 and the calibration base 21.

[0106] Optionally, the calibration component 22 is mounted on the calibration base 21, with a preset distance between the calibration base 21 and the four-wheel alignment measuring device 1. This facilitates the four-wheel alignment measuring device 1 in acquiring an image of the calibration component 22 on the calibration base 21, and also facilitates the four-wheel alignment measuring device 1 in calculating coordinate values ​​based on the distance to the calibration base 21. The calibration base 21 defines at least two calibration directions, which are parallel to the calibration base 21. Specifically, the calibration directions are parallel to the surface of the calibration base 21 used to support the calibration component 22. Both the four-wheel alignment measuring device 1 and the four-wheel alignment calibration device 2 are located in one of the calibration directions. The four-wheel alignment calibration device 1 can obtain an image of the four-wheel alignment calibration device 2 in the calibration direction. This image is a calibration image, meaning that the four-wheel alignment measuring device 1 can obtain an image of the calibration component 22 along the calibration direction, thereby analyzing its own position and calibrating its own position. Similarly, the four-wheel alignment calibration device 2 on the opposite side is located in another calibration direction. That is, the four-wheel alignment calibration device 2 on the opposite side can obtain an image of the four-wheel alignment calibration device 2 in the calibration direction. This image is a calibration image, meaning that the four-wheel alignment calibration device 2 on the opposite side can obtain an image of the calibration component 22 along the calibration direction, thereby analyzing its own position and calibrating its own position.

[0107] By adopting the above technical solution:

[0108] The multiple four-wheel alignment measuring devices 1 of the four-wheel alignment machine can acquire calibration images of the calibration components 22 from different calibration directions, so that multiple four-wheel alignment measuring devices 1 can share a single four-wheel alignment calibration device 2 to perform calibration operations, reducing the need for the four-wheel alignment calibration device 2 and improving calibration efficiency. At the same time, the calibration base 21 having at least two calibration directions can also improve the accuracy of the calibration results.

[0109] One end of the camera device connector 25 is connected to the side or bottom of the calibration base 21, and the other end of the camera device connector 25 is connected to the side or bottom of the third camera device 24, so that the projections of the third camera device 24 and the calibration component 22 along any calibration direction do not coincide. This allows the third camera device 24 to avoid the calibration component 22 and reduces the possibility of the third camera device 24 obstructing the calibration component 22. Applying the camera device connector 25 to the four-wheel alignment machine can reduce the possibility of errors in the calibration results and improve the accuracy of the four-wheel alignment machine's detection results.

[0110] In one embodiment, the camera device connector 25 includes a first connecting segment 251 and a second connecting segment 252 connected to the first connecting segment 251; the first connecting segment 251 is used to connect to the calibration base 21, and the first connecting segment 251 extends along a first direction X perpendicular to the side, where the first direction X is parallel to one of the calibration directions; the second connecting segment 252 is used to connect to a third camera device 24, and the second connecting segment 252 extends along a second direction Y perpendicular to the first direction X, so that the third camera device 24 can photograph another calibration base 21 while avoiding the side of the calibration base 21.

[0111] Here, it can be understood that the first connecting segment 251 is used to connect with the calibration base 21, the second connecting segment 252 is used to connect with the third camera device 24, and the second connecting segment 252 is connected with the first connecting segment 251, so that the third camera device 24 is connected with the calibration base 21.

[0112] Specifically, the first connecting segment 251 and the second connecting segment 252 are connected. The first connecting segment 251 is connected to the calibration base 21 and extends along the first direction X. The second connecting segment 252 is connected to the third camera device 24 and extends along the second direction Y, wherein the second direction Y is perpendicular to the first direction X. Since the first connecting segment 251 is connected to the calibration base 21 and extends along the first direction X, the second connecting segment 252 connected to the first connecting segment 251 and the calibration base 21 can be spaced apart in the first direction X. The first connecting segment 251 is of equal length; and since the third camera device 24 is connected to the second connecting segment 252, and the second connecting segment 252 extends along the second direction Y, the third camera device 24 and the first connecting segment 251 can be separated by a distance of the second connecting segment 252 of equal length in the second direction Y; therefore, the arrangement of the first connecting segment 251 and the second connecting segment 252 allows the third camera device 24 to be separated from the calibration base 21 by a preset distance in both the first direction X and the second direction Y, reducing the possibility of the third camera device 24 obstructing the calibration base 21.

[0113] By adopting the above technical solution, the camera device connector 25 includes a first connecting section 251 and a second connecting section 252 connected to the first connecting section 251. The first connecting section 251 extends in the first direction X, and the second connecting section 252 extends in the second direction Y, which is perpendicular to the first direction X. This allows the third camera device 24 on the second connecting section 252 to avoid the calibration base 21 on the first connecting section 251, reducing the possibility of the third camera device 24 obstructing the calibration base 21. Applying the camera device connector 25 to a four-wheel alignment machine can reduce the possibility of errors in the calibration results and improve the accuracy of the four-wheel alignment machine's detection results.

[0114] In one embodiment, the four-wheel alignment calibration device 2 further includes a plurality of calibration components 22, which are disposed on the calibration base 21. The projections of the plurality of calibration components 22 along the calibration direction do not overlap with each other, and the heights of the plurality of calibration components 22 on the calibration base 21 are different.

[0115] Here, it can be understood that the calibration base 21 is used to support the calibration component 22; the calibration component 22 is used to allow the four-wheel alignment measuring device 1 to acquire calibration images, and the four-wheel alignment measuring device 1 analyzes the calibration images to obtain coordinate information, thereby calibrating its own position.

[0116] Specifically, multiple calibration components 22 are mounted on a calibration base 21, with a preset distance between the calibration base 21 and the four-wheel alignment measuring device 1. This facilitates the four-wheel alignment measuring device 1 in acquiring images of the multiple calibration components 22 on the calibration base 21, and also allows the four-wheel alignment measuring device 1 to calculate coordinate values ​​based on the distance to the calibration base 21. The calibration base 21 defines at least two calibration directions, which are parallel to the calibration base 21. Specifically, the calibration directions are parallel to the surfaces of the calibration base 21 that support the calibration components 22. Both the four-wheel alignment measuring device 1 and the four-wheel alignment calibration device 2 are located in the calibration directions, meaning that the four-wheel alignment measuring device 1 can obtain images of the four-wheel alignment calibration device 2 in the calibration directions. The image is a calibration image, meaning that the four-wheel alignment measuring device 1 can obtain an image of the calibration component 22 along the calibration direction. The calibration base 21 defines at least two calibration directions, meaning that at least two four-wheel alignment measuring devices 1 can simultaneously obtain images of the calibration component 22. At the same time, the projections of multiple calibration components 22 along the calibration direction do not overlap, and the heights of multiple calibration components 22 are different. This allows the four-wheel alignment measuring device 1 to simultaneously obtain images of multiple calibration components 22 with different heights. The images of multiple calibration components 22 can provide more coordinate values ​​for mutual calibration, thereby improving the accuracy of the calibration results and, consequently, improving the accuracy of the tire alignment information detected by the four-wheel alignment measuring device 1.

[0117] It needs to be further explained that the number of calibration components 22 is positively correlated with the accuracy of the four-wheel alignment measuring device 1 in determining its own position. That is, the more calibration components 22 there are, the more images of the calibration components 22 the four-wheel alignment measuring device 1 can acquire, and the more accurate the position it can analyze. Specifically, the height of each calibration component 22 is different, and the position of each calibration ball is different, so that the four-wheel alignment measuring device 1 can acquire the position coordinates of different calibration components 22. In this way, the four-wheel alignment measuring device 1 can acquire different data of multiple calibration components 22 at the same time, which increases the accuracy of position analysis.

[0118] By adopting the above technical solution, the multiple four-wheel alignment measuring devices 1 of the four-wheel alignment machine can acquire calibration images of calibration components 22 from different calibration directions, so that multiple four-wheel alignment measuring devices 1 can share a single four-wheel alignment calibration device 2 for calibration operations, reducing the need for the four-wheel alignment calibration device 2 and improving calibration efficiency. At the same time, the calibration base 21 having at least two calibration directions can also improve the accuracy of the calibration results. In addition, the calibration base 21 is provided with multiple calibration components 22 whose projections in the calibration directions do not overlap, so that the four-wheel alignment measuring device 1 can acquire images of multiple calibration components 22 in the calibration direction. The images of multiple calibration components 22 can provide more coordinate values ​​for mutual calibration, thereby improving the accuracy of the calibration results and, in turn, improving the accuracy of the tire alignment information detected by the four-wheel alignment measuring device 1.

[0119] Please refer to the following: Figure 3 In one embodiment, the calibration component 22 includes a calibration rod 221 and a calibration ball 222 disposed on the calibration rod 221. The calibration rod 221 is erected on the calibration base 21, and the calibration ball 222 is disposed on the end of the calibration rod 221 away from the calibration base 21.

[0120] Here, it can be understood that the calibration rod 221 is used to support the calibration ball 222, and the calibration ball 222 is used to provide the four-wheel alignment measuring device 1 with images;

[0121] Specifically, the calibration rod 221 is erected in the calibration base 21, that is, the calibration rod 221 is vertically set in the calibration base 21; the calibration ball 222 is used for the four-wheel alignment measuring device 1 to acquire images. The four-wheel alignment measuring device 1 takes an image of the calibration ball 222 and determines the coordinate value according to the center of the calibration ball 222, thereby calibrating the position of the four-wheel alignment measuring device 1; the calibration rod 221 is used to fix the calibration ball 222 at a preset height, so that the four-wheel alignment measuring device 1 can acquire the calibration ball 222 at the preset height, which is beneficial for the four-wheel alignment measuring device 1 to determine the coordinate value.

[0122] Optionally, the calibration ball 222 is spherical in shape. The camera of the four-wheel alignment measuring device 1 can calculate the center of the calibration ball 222 from either the side or the front of the calibration ball 222. When calibrating the four-wheel alignment measuring device 1, images of the calibration ball 222 are obtained from different calibration directions. That is, the images of the calibration ball 222 obtained from different angles are all circular patterns.

[0123] The working principle of the calibration component 22 in this embodiment is as follows:

[0124] The calibration component 22 is fixed near the vehicle. For example, it can be placed between two four-wheel alignment measuring devices 1 that correspond one-to-one with each tire. The calibration rod 221 has a preset height and supports the calibration ball 222 so that the calibration ball 222 is located at the preset height. The four-wheel alignment measuring device 1 is used to acquire an image of the calibration ball 222. The image of the calibration ball 222 is circular. The four-wheel alignment measuring device 1 analyzes the center of the image of the calibration ball 222 and uses it to analyze the coordinate value, thereby calibrating the position of the four-wheel alignment measuring device 1 itself.

[0125] It needs to be further explained that the four-wheel alignment measuring device 1 can take images of the calibration ball 222 from multiple calibration directions. Because no matter which calibration direction the image of the calibration ball 222 is taken from, the image of the calibration ball 222 is always circular and its center position remains unchanged. Therefore, the calibration ball 222 in this embodiment can be used to calibrate the four-wheel alignment measuring device 1 in multiple directions.

[0126] By adopting the above technical solution, only one calibration component 22 is needed to complete the calibration of the four-wheel alignment measuring device 1 in multiple directions, thereby improving the consistency of the calibration results and reducing the error of the calibration results.

[0127] In one embodiment, each calibration rod 221 has a different length.

[0128] Here, it can be understood that the calibration rod 221 is used to support the calibration ball 222, and the calibration ball 222 is used to provide the four-wheel alignment measuring device 1 with images;

[0129] Specifically, the height of each calibration rod 221 is different, which makes the height of the calibration ball 222 on the calibration rod 221 relative to the calibration base 21 different.

[0130] By adopting the above technical solution, each calibration component 22 has a different height.

[0131] In one embodiment, the four-wheel alignment calibration device 2 further includes a calibration cover 26, which is disposed above the calibration base 21. A calibration space is formed between the calibration cover 26 and the calibration base 21. The calibration space has at least two calibration openings 261, the opening direction of which is the same as the calibration direction. The calibration base 21 is located within the calibration space, and the calibration openings 261 are used to expose the calibration component 22.

[0132] Here, it can be understood that the calibration cover 26 is used to protect the calibration component 22;

[0133] Specifically, the calibration cover 26 is located above the calibration base 21, and a calibration space is formed between the two. The calibration space has a calibration opening 261, and the opening direction of the calibration opening 261 is consistent with the calibration direction. The calibration space is equipped with the calibration base 21, and the calibration opening 261 is used to expose the calibration component 22 in the calibration space.

[0134] By adopting the above technical solution, a calibration space for accommodating the calibration component 22 is formed between the calibration cover 26 and the calibration base 21, which improves the protective performance of the calibration component 22. At the same time, the calibration space has a calibration opening 261 for exposing the calibration component 22.

[0135] In one embodiment, the four-wheel alignment calibration device 2 further includes a calibration side cover 27, which is used to connect the calibration cover body 26 and the calibration base body 21, so that the calibration space forms three calibration openings 261.

[0136] Here, it can be understood that the calibration side cover 27, the calibration cover body 26, and the calibration base body 21 enclose a calibration space and form a calibration opening 261 that communicates with the calibration space. The calibration opening 261 corresponds to three different calibration directions.

[0137] In this embodiment, the four-wheel alignment system includes a vehicle lift 3, four four-wheel alignment measuring devices 1, and two four-wheel alignment calibration devices 2. The two four-wheel alignment measuring devices 1 are located on one side of the vehicle lift 3, corresponding to the front and rear wheels of the vehicle. A four-wheel alignment calibration device 2 is positioned between the two four-wheel alignment measuring devices 1. The two four-wheel alignment measuring devices 1 acquire calibration images of the calibration components 22 of the four-wheel alignment calibration device 2 to calibrate themselves. Therefore, two of the three calibration openings 261 of each four-wheel alignment calibration device 2 need to face different directions to correspond to the calibration of the two four-wheel alignment measuring devices 1. Similarly, the other two four-wheel alignment measuring devices 1 are located on the other side of the vehicle lift 3, corresponding to the other side of the vehicle. The front and rear wheels correspond to each other, and another four-wheel alignment calibration device 2 is located between the two four-wheel alignment measuring devices 1. The two four-wheel alignment measuring devices 1 are used to acquire the calibration image of the calibration component 22 of the four-wheel alignment calibration device 2 to calibrate themselves. Therefore, two of the three calibration openings 261 of each four-wheel alignment calibration device 2 need to face different directions to correspond to the calibration of the two four-wheel alignment measuring devices 1. The two four-wheel alignment calibration devices 2 located on opposite sides of the lift 3 carrying the vehicle also need to calibrate each other. Therefore, the remaining calibration opening 261 of the three calibration openings 261 of each four-wheel alignment calibration device 2 needs to correspond to the calibration of the four-wheel alignment calibration device 2 on the opposite side. Therefore, the three calibration openings 261 need to be set to face three different directions.

[0138] By adopting the above technical solution, the calibration space is formed with calibration openings 261 corresponding to three different calibration directions.

[0139] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A four-wheel aligner, characterized by, include: Four four-wheel alignment measuring devices and two four-wheel alignment calibration devices; Four four-wheel alignment measuring devices are placed one-to-one beside the four tires of the vehicle to be aligned. A four-wheel alignment calibration device is provided between two four-wheel alignment measuring devices located on one side of the vehicle to be aligned, and a four-wheel alignment calibration device is provided between two four-wheel alignment measuring devices located on the other side of the vehicle to be aligned. The two four-wheel alignment calibration devices are arranged opposite to each other on both sides of the vehicle to be aligned. The four-wheel alignment measuring devices are used to acquire images of the tires to analyze the tire alignment information. The four-wheel alignment calibration devices are used to calibrate the four-wheel alignment measuring devices and the four-wheel alignment calibration devices on the opposite side.

2. The four-wheel aligner of claim 1, wherein, The four-wheel alignment system also includes a user terminal, which is communicatively connected to the four-wheel alignment measuring device and the four-wheel alignment calibration device. The user terminal is used to receive, display, and send measurement information obtained by the four-wheel alignment measuring device and calibration information obtained by the four-wheel alignment calibration device.

3. The four-wheel aligner of claim 1, wherein, The four-wheel alignment system also includes multiple fixing components, which are disposed on the four-wheel alignment measuring device and the four-wheel alignment calibration device, and are used to be fixedly connected to the lift carrying the vehicle.

4. The four-wheel aligner of claim 3, wherein, The fastener is a magnetic component that can be magnetically fixed to the lift of the vehicle.

5. A four-wheel aligner according to any one of claims 1 to 4, wherein, The four-wheel alignment measuring device includes a support base, a support rod connected to one end of the support base, a laser device, and a first camera device mounted on the support rod. The length direction of the support rod is inclined at an angle to the length direction of the support base. The laser device is used to project a laser image onto the tire surface, and the first camera device is used to acquire the laser image and obtain the tire's positioning information from the laser image.

6. The four-wheel aligner of claim 5, wherein, The laser device includes an inclined support and a laser module mounted on the inclined support; the inclined support is used to support the laser module, such that the central axis of the laser module is inclined at an angle to the plane where the hub of the tire to be tested is located, and the laser module projects a laser image from the inclined support toward the surface of the tire.

7. The four-wheel aligner of claim 5, wherein, The four-wheel alignment measuring device also includes a second camera device mounted on the support base. The second camera device is used to acquire images of the four-wheel alignment calibration device to calibrate its own position.

8. The four-wheel aligner of claim 7, wherein, The second camera device includes: a second camera housing disposed on the support base and a second camera main unit disposed in the second camera housing; wherein, the second camera housing is provided with a receiving cavity and a second camera opening communicating with the receiving cavity, the second camera main unit is disposed in the receiving cavity, the second camera main unit is used to capture images through the second camera opening, and the extension direction of the central axis of the second camera main unit forms an inclined angle with the extension direction of the line connecting the second camera device and the four-wheel alignment calibration device for calibrating the second camera device.

9. A four-wheel aligner according to any one of claims 1 to 4, wherein, The four-wheel alignment calibration device comprises a calibration seat body, a calibration component, a third camera device and a camera device connecting piece, the calibration seat body is defined with at least two calibration directions parallel to the calibration seat body, the calibration component is arranged on the calibration seat body and located in the calibration direction, one end of the camera device connecting piece is connected with the calibration seat body, and the other end of the camera device connecting piece is connected with the third camera device, so that the projection of the third camera device and the calibration component along any calibration direction does not coincide with each other.

10. The four-wheel aligner of claim 9, wherein, The camera device connecting piece comprises a first connecting section and a second connecting section connected with the first connecting section; the first connecting section is used for connecting with the calibration seat body, and the first connecting section is arranged in extension along a first direction perpendicular to the side of the calibration seat body; the second connecting section is used for connecting with the third camera device, and the second connecting section extends along a second direction perpendicular to the first direction, so that the third camera device can shoot another calibration seat body while avoiding the side of the calibration seat body.

Images