Magnetic attraction piece and four-wheel alignment instrument

Abstract

The utility model provides a kind of magnetic attraction piece and four-wheel alignment instrument, wherein magnetic attraction piece includes: connecting structure, the connecting structure is used to be fixedly connected with the device in four-wheel alignment instrument;Magnetic attraction structure, one end of the magnetic attraction structure is fixedly connected with the connecting structure, the other end of the magnetic attraction structure is used to be magnetically attracted with the lifting machine of carrying vehicle, so that the device can be fixed on the arbitrary position of the lifting machine of carrying vehicle. By adopting the above technical scheme, the magnetic attraction piece can fix the device on the arbitrary position of the lifting machine of carrying vehicle through the magnetic attraction structure, improving the flexibility of device adjustment. In addition, the position of the magnetic attraction piece on the lifting machine of carrying vehicle can be arbitrarily changed, and it can also be finely adjusted, which improves the accuracy of device adjustment. The lifting machine of carrying vehicle does not need to set the sliding groove structure slidingly matched with the magnetic attraction piece, which reduces the possibility of foreign matter blocking when the magnetic attraction piece is matched with the lifting machine base.

Description

Technical Field

[0001] This utility model relates to the technical field of magnetic attraction devices, and more specifically, to a magnetic attraction component and a four-wheel alignment device. Background Technology

[0002] A four-wheel alignment system includes a four-wheel alignment detection device and a four-wheel alignment calibration device mounted on a lift that carries the vehicle. These devices need to be positioned to match the tire positions of the vehicle being measured, thus requiring them to be repositioned. Existing structures for adjusting the device's position typically involve a sliding groove on the lift that engages with the device. The device moves along the length of the groove to change its position and align with the tire positions. However, this method limits the device's movement to the length of the groove, meaning it can only move along the groove's length and cannot adjust positions in multiple directions simultaneously. This results in low flexibility in adjusting the device's position, and the groove is prone to harboring foreign objects, causing obstructed movement and consequently, low accuracy in adjusting the device's position. Utility Model Content

[0003] The purpose of this invention is to provide a magnetic suction device and a four-wheel alignment instrument to solve the technical problems of low flexibility and accuracy in adjusting the position of the four-wheel alignment detection device and the four-wheel alignment calibration device in the prior art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] In a first aspect, a magnetic attracting element is provided, comprising:

[0006] A connection structure for fixed connection with a device in a four-wheel alignment system;

[0007] A magnetic attraction structure is provided, with one end of the magnetic attraction structure fixedly connected to the connecting structure, and the other end of the magnetic attraction structure being magnetically attracted to the lift of the vehicle, so that the device can be fixed at any position on the lift of the vehicle.

[0008] By adopting the above technical solution, the magnetic suction component can fix the device at any position on the lift of the carrying vehicle through the magnetic suction structure. That is, the four-wheel alignment detection device or four-wheel alignment calibration device fixedly connected to the magnetic suction component can be adjusted synchronously in the length and height directions of the lift of the carrying vehicle, without being limited by the structure of the lift of the carrying vehicle, thus improving the flexibility of device adjustment.

[0009] In addition, the magnetic attraction between the magnetic component and the lift of the vehicle allows the position of the magnetic component on the lift to be changed arbitrarily and finely adjusted, thus improving the accuracy of the device when adjusting its position. At the same time, the lift of the vehicle does not need to be equipped with a sliding groove structure that slides with the magnetic component, reducing the possibility of foreign objects blocking the magnetic component when it is in contact with the lift of the vehicle.

[0010] In one embodiment, the magnetic attraction structure includes a magnetic component fixing seat and at least one magnetic component, the magnetic component fixing seat is fixedly connected to the connection structure, and the magnetic component is fixed on the magnetic component fixing seat.

[0011] By adopting the above technical solution, the magnetic structure is able to fix the device on the lift carrying the vehicle using the magnetic attraction force.

[0012] In one embodiment, the magnetic attraction structure includes a plurality of magnetic elements arranged along the length direction of the magnetic element fixing base.

[0013] By adopting the above technical solution, the magnetic adsorption force of the magnetic structure is increased, and the stability of the device when it is fixed is improved.

[0014] In one embodiment, the magnetic component mounting base is provided with a plurality of magnetic component mounting slots, and the magnetic component is detachably mounted in the magnetic component mounting slots.

[0015] By adopting the above technical solution, the magnetic attraction force of the magnetic structure can be adjusted according to the weight of the device. The magnetic structure has high adjustment flexibility and strong applicability.

[0016] In one embodiment, the magnetic component mounting base has a magnetic surface for contacting the surface of the lift of the vehicle, the magnetic component mounting groove is formed on the magnetic surface, and the surface of the magnetic component exposed at the opening of the magnetic component mounting groove is flush with the magnetic surface.

[0017] By adopting the above technical solution, the magnetic suction surface is used to contact the surface of the lifting platform of the carrying vehicle. The magnetic suction surface and the surface of the lifting platform of the carrying vehicle are set as a planar structure, which facilitates the contact between the two. At the same time, the surface of the magnetic component is flush with the magnetic suction surface, which enables the magnetic component to provide a larger magnetic attraction force. It also avoids the magnetic component protruding from the magnetic suction surface, which would cause the magnetic suction surface to have a protruding structure, affecting the adhesion between the magnetic suction surface and the surface of the lifting platform of the carrying vehicle, and thus causing the entire magnetic component to be unstablely fixed on the lifting platform of the carrying vehicle.

[0018] In one embodiment, the outer sleeve of the magnetic component is provided with a first buffer layer; and / or, the outer sleeve of the magnetic component mounting base is provided with a second buffer layer.

[0019] By adopting the above technical solution, the possibility of damage to the lift carrying the vehicle caused by magnetic components and magnetic component mounting bases is reduced, and the protective performance of the lift carrying the vehicle is improved.

[0020] In one embodiment, the cross-sectional shape of the magnetic component holder is racetrack-shaped or circular.

[0021] By adopting the above technical solutions, the protective performance of the lift that carries the vehicle has been further improved.

[0022] In one embodiment, the magnetic component mounting base is provided with a connecting groove, and the connecting structure includes a connecting base detachably embedded in the connecting groove.

[0023] In one embodiment, the connection structure further includes a plug-in component connected to the connector, the plug-in component being used for plugging into the device.

[0024] By adopting the above technical solution, a fixed connection between the magnetic component fixing seat and the connecting seat is achieved.

[0025] Secondly, a device is provided, comprising a device body and the aforementioned magnetic suction element, wherein the magnetic suction element is fixedly disposed at one end of the device body.

[0026] By adopting the above technical solution, the device of this embodiment, in addition to having the advantages of the magnetic suction component in the above embodiments, also has the advantages of high adjustment flexibility and accuracy.

[0027] Thirdly, a four-wheel alignment device is provided, including the above-mentioned apparatus. The apparatus includes a four-wheel alignment measuring device and a four-wheel alignment calibration device. The four-wheel alignment measuring device and the four-wheel alignment calibration device are respectively provided with the magnetic attracting element. The magnetic attracting element is used to magnetically attract the magnetic part of the lift carrying the vehicle.

[0028] By adopting the above technical solution, the four-wheel alignment device of this embodiment, in addition to having the advantages of the device in the above embodiments, also has the advantages of device adjustment flexibility and high accuracy. Attached Figure Description

[0029] 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.

[0030] Figure 1 This is a three-dimensional structural diagram of the four-wheel alignment measuring device in the four-wheel alignment system provided in this embodiment of the utility model;

[0031] Figure 2 This is a three-dimensional structural diagram of the four-wheel alignment calibration device in the four-wheel alignment system provided in this embodiment of the utility model;

[0032] Figure 3 This is a three-dimensional structural view of the magnetic suction component provided in one embodiment of the present utility model;

[0033] Figure 4 This is an exploded view of the magnetic suction component provided in an embodiment of the present utility model;

[0034] Figure 5 This is a three-dimensional structural diagram of the magnetic suction component provided in another embodiment of the present utility model;

[0035] Figure 6 This is an exploded view of the magnetic suction component provided in this embodiment of the utility model.

[0036] The labels for the attached figures are as follows:

[0037] 100. Magnetic component; 200. Device;

[0038] 1. Connection structure; 2. Magnetic attraction structure;

[0039] 21. Magnetic component holder; 22. Magnetic component;

[0040] 210. Magnetic surface; 211. Magnetic component fixing groove; 221. First buffer layer; 212. Connecting groove; 101. Connecting seat; 102. Insertion piece; 103. Reinforcing rib. Detailed Implementation

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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:

[0045] like Figures 1 to 3 As shown in the figure, a magnetic suction component 100 provided in this embodiment of the present invention is used to be mounted on a four-wheel alignment device 200. The device 200 includes, but is not limited to, a four-wheel alignment measuring device and a four-wheel alignment calibration device. The magnetic suction component 100 is used to fix the four-wheel alignment measuring device and the four-wheel alignment calibration device to the lift of the vehicle. Specifically, the lift of the vehicle is provided with a magnetic part, which can be the frame structure of the lift, i.e., the frame structure is made of a magnetic structure. The magnetic structure includes, but is not limited to, magnetic metal. Thus, the magnetic suction component 100 can be fixed to the lift of the vehicle by magnetic attraction. Since the entire frame structure is made of a magnetic structure, the magnetic suction component 100 can be attracted to any position on the lift of the vehicle, making the position adjustment method of the device 200 highly flexible. The following is a detailed description of the specific implementation method:

[0046] The magnetic attractor 100 in this embodiment includes: a connecting structure 1 and a magnetic attractor 2;

[0047] The connecting structure 1 is used to fix the four-wheel alignment device 200. It can be understood that the connecting structure 1 is used to fix the four-wheel alignment device 200. In this way, when the connecting structure 1 is fixed on the lift of the vehicle, the device 200 is simultaneously fixed on the lift of the vehicle. Specifically, the connection method between the connecting structure 1 and the device 200 includes, but is not limited to, plugging, welding or bonding.

[0048] The magnetic structure 2 is fixedly connected to the connecting structure 1. The magnetic structure 2 is used to magnetically attract the magnetic part of the lift of the vehicle, so that the device 200 can be fixed at any position of the magnetic part. Here, it can be understood that the magnetic structure 2 is used to magnetically attract the magnetic part of the lift of the vehicle. Since the magnetic structure 2 is fixedly connected to the connecting structure 1, the device 200 can be fixed to the lift of the vehicle. Specifically, the magnetic structure 2 is magnetically attracted to the magnetic part of the lift of the vehicle. Under the action of magnetic force, the magnetic structure 2 is fixed to the lift of the vehicle. The magnetic force between the magnetic structure 2 and the lift of the vehicle is set to be greater than the force exerted by the device 200 on the magnetic structure 2, which forces the magnetic structure 2 to detach from the lift of the vehicle. In this embodiment, this force is the gravity of the device 200.

[0049] The working principle of the magnetic attractor 100 provided in this embodiment is as follows:

[0050] The magnetic suction component 100 is installed on the device 200. The connecting structure 1 of the magnetic suction component 100 is connected to the device 200, and the magnetic suction structure 2 of the magnetic suction component 100 is positioned away from the device 200. The magnetic suction structure 2 is used to attach to the lift of the vehicle. Specifically, when the vehicle to be four-wheel aligned is stopped on the lift of the vehicle, the operator can fix the magnetic suction structure 2 to the magnetic part of the lift of the vehicle. Since the lift of the vehicle is made of a magnetic structure, the magnetic suction structure 2 can be fixed at any position on the lift of the vehicle, which makes it easy to align the device 200 with the corresponding tire. When changing to a different vehicle for testing, the operator applies a force greater than the magnetic force of the magnetic suction structure 2 to pull the magnetic suction structure 2 off the lift of the vehicle, and reattaches the magnetic suction structure 2 to the position corresponding to the tire on the lift of the vehicle, so that the device 200 is realigned with the corresponding tire.

[0051] By adopting the above technical solution

[0052] The magnetic suction component 100 can fix the device 200 to any position on the lift of the vehicle through the magnetic suction structure 2. That is, the device 200 fixedly connected to the magnetic suction component 100 can be adjusted synchronously in the length and height directions of the lift of the vehicle, without being limited by the structure of the lift of the vehicle, thus improving the flexibility of the device 200 adjustment.

[0053] In addition, the magnetic chuck 100 is magnetically attracted to the lift of the vehicle, and the position of the magnetic chuck 100 on the lift of the vehicle can be changed arbitrarily and finely adjusted, which improves the accuracy of the device 200 when adjusting its position. At the same time, there is no need to set a sliding groove structure on the lift of the vehicle to slide with the magnetic chuck 100, which reduces the possibility of foreign objects blocking the magnetic chuck 100 when it is engaged with the lift of the vehicle.

[0054] Please refer to the following: Figure 4 In one embodiment, the magnetic structure 2 includes a magnetic element fixing seat 21 and at least one magnetic element 22. The magnetic element fixing seat 21 is fixedly connected to the connecting structure 1, and the magnetic element 22 is fixed on the magnetic element fixing seat 21.

[0055] Here, it can be understood that the magnetic component fixing seat 21 is used to fix the magnetic component 22, and the magnetic component 22 is used to provide magnetic attraction force. Specifically, the magnetic component fixing seat 21 is fixedly connected to the connecting structure 1, and the connection method includes, but is not limited to, plugging, welding or bonding. The magnetic component 22 includes, but is not limited to, a magnetic structure, and the magnetic structure includes, but is not limited to, a magnetic metal. When the magnetic component 22 is fixed to the magnetic component fixing seat 21, since the magnetic component fixing seat 21 is fixedly connected to the connecting structure 1, and the connecting structure 1 is fixedly connected to the device 200, the magnetic attraction force provided by the magnetic component 22 can fix the device 200 on the lift carrying the vehicle.

[0056] By adopting the above technical solution, the magnetic structure 2 uses the magnetic attraction force to fix the device 200 on the lift carrying the vehicle.

[0057] In one embodiment, the magnetic structure 2 includes a plurality of magnetic elements 22, which are arranged along the length direction of the magnetic element fixing seat 21, and the length direction of the magnetic element fixing seat 21 is parallel to the length or height direction of the lift carrying the vehicle.

[0058] Here, it can be understood that multiple magnetic components 22 can provide more magnetic attraction forces, which can improve the stability of the device 200 when it is fixed to the lift of the vehicle, and prevent the device 200 from detaching from the lift of the vehicle. In addition, multiple magnetic components 22 can be arranged along the length direction of the magnetic component fixing seat 21, and the length direction of the magnetic component fixing seat 21 is parallel to the length direction of the lift of the vehicle. This can increase the stability of the magnetic component fixing seat 21 in the length direction and reduce the possibility of the magnetic component fixing seat 21 tilting under force in the length direction. Alternatively, the length direction of the magnetic component fixing seat 21 can be parallel to the height direction of the lift of the vehicle, which can increase the stability of the magnetic component fixing seat 21 in the height direction and reduce the possibility of the magnetic component fixing seat 21 tilting under force in the height direction.

[0059] By adopting the above technical solution, the magnetic adsorption force of the magnetic structure 2 is increased, and the stability of the device 200 when it is fixed is improved.

[0060] In one embodiment, the magnetic component mounting base 21 is provided with a plurality of magnetic component mounting slots 211, and the magnetic component 22 is detachably installed in the magnetic component mounting slots 211. When the magnetic component 22 is installed in the magnetic component mounting slots 211, the slot opening of the magnetic component mounting slots 211 exposes the magnetic component 22.

[0061] Here, it can be understood that the magnetic component 22 is detachably installed on the magnetic component fixing seat 21. That is, the magnetic component 22 can be adjusted to a different magnetic attraction force according to the weight of the device 200. When the magnetic component 22 is fixed in the magnetic component fixing groove 211, the groove opening of the magnetic component fixing groove 211 exposes the magnetic component 22. This avoids other obstructing structures between the magnetic component 22 and the lift carrying the vehicle, which would affect the magnetic force.

[0062] Specifically, the operator can select magnetic components 22 with different magnetic forces according to the weight of the four-wheel alignment measuring device or the four-wheel alignment calibration device, and fix the magnetic components 22 in the magnetic component fixing groove 211. This allows four-wheel alignment measuring devices or four-wheel alignment calibration devices of different weights to be fixed on the lift carrying the vehicle.

[0063] By adopting the above technical solution, the magnetic attraction force of the magnetic structure 2 can be adjusted according to the weight of the device 200. The magnetic structure has high adjustment flexibility and strong applicability.

[0064] In one embodiment, the magnetic component mounting base 21 is provided with a magnetic surface 210 for contacting the surface of the lift carrying the vehicle, and a magnetic component mounting groove 211 is formed on the magnetic surface 210. The surface of the magnetic component 22 exposed at the opening of the magnetic component mounting groove 211 is flush with the magnetic surface 210.

[0065] By adopting the above technical solution, the magnetic surface 210 is used to contact the surface of the lift of the carrying vehicle. The magnetic surface 210 and the surface of the lift of the carrying vehicle are set as planar structures, which facilitates the contact between the two. At the same time, the surface of the magnetic component 22 is flush with the magnetic surface 210, which enables the magnetic component 22 to provide a larger magnetic attraction force. It also avoids the magnetic component 22 protruding from the magnetic surface 210, which would cause the magnetic surface 210 to have a protruding structure, affecting the fit between the magnetic surface 210 and the surface of the lift of the carrying vehicle, and thus causing the entire magnetic component 100 to be unstablely fixed on the lift of the carrying vehicle.

[0066] In one embodiment, the magnetic component 22 is covered with a first buffer layer 221; the magnetic component mounting base 21 is covered with a second buffer layer. In other embodiments, the magnetic component 22 is covered with a first buffer layer 221; or, the magnetic component mounting base 21 is covered with a second buffer layer.

[0067] Here, it can be understood that the first buffer layer 221 is used to protect the lift of the vehicle carrying it, preventing the magnetic component 22 from scratching the surface of the lift when it is attached to the lift of the vehicle carrying it; similarly, the second buffer layer is used to protect the lift of the vehicle carrying it, preventing the magnetic component mounting base 21 from scratching the surface of the lift when it is attached to the lift of the vehicle carrying it; the first buffer layer 221 and the second buffer layer include, but are not limited to, silicone sleeves.

[0068] By adopting the above technical solution, the possibility of damage to the lift of the vehicle being carried by the magnetic component 22 and the magnetic component fixing seat 21 is reduced, and the protective performance of the lift of the vehicle being carried is improved.

[0069] In one embodiment, the cross-sectional shape of the magnetic component fixing base 21 is either racetrack-shaped or circular.

[0070] Here, it is understandable that, in order to avoid forming sharp corners at the edges of the magnetic component mounting base 21, the magnetic component mounting base 21 is set as a racetrack-shaped or circular magnetic component mounting base 21, thereby reducing the possibility of damaging the surface of the vehicle's lift when fixing the magnetic component mounting base 21 to the vehicle's lift.

[0071] By adopting the above technical solutions, the protective performance of the lift that carries the vehicle has been further improved.

[0072] Please refer to the following: Figure 5 and Figure 6 In one embodiment, the magnetic component fixing base 21 is provided with a connecting groove 212, and the connecting structure 1 includes a connecting base 101 detachably embedded in the connecting groove 212 and a plug-in 102 connected to the connecting base 101. The plug-in 102 is used to plug into and cooperate with the device 200.

[0073] Here, it can be understood that the magnetic component fixing seat 21 is detachably connected to the connecting seat 101 of the connecting structure 1; specifically, the connecting structure 1 includes the connecting seat 101 and the plug 102. The connecting seat 101 is detachably embedded in the connecting groove 212, and the plug 102 is used to plug into and cooperate with the device 200 to realize the fixed connection between the device 200 and the connecting structure 1.

[0074] By adopting the above technical solution, a fixed connection between the magnetic component fixing seat 21 and the connecting seat 101 is achieved.

[0075] In one embodiment, the connector 102 is formed with a plurality of reinforcing ribs 103, the extending direction of the reinforcing ribs 103 being parallel to the insertion direction of the connector 102.

[0076] By adopting the above technical solution, the mechanical strength of the connector 102 is improved and the possibility of the connector 102 breaking is reduced.

[0077] Secondly, a device 200 is provided, including a main body of the device 200 and the aforementioned magnetic member 100, wherein the magnetic member 100 is fixedly disposed at one end of the main body of the device 200.

[0078] Here, it can be understood that the device 200 is used to measure tires or perform calibration functions, and the magnetic attachment 100 is used to fix the main body of the device 200 to the lift carrying the vehicle.

[0079] By adopting the above technical solution, in addition to the advantages of the magnetic suction component 100 in the above embodiment, the device 200 of this embodiment also has the advantages of high adjustment flexibility and accuracy.

[0080] Thirdly, a four-wheel alignment device is provided, including the aforementioned device 200. The device 200 includes a four-wheel alignment measuring device and a four-wheel alignment calibration device. The four-wheel alignment measuring device and the four-wheel alignment calibration device are respectively provided with magnetic attracting components 100, which are used to magnetically attract the magnetic part of the lift carrying the vehicle.

[0081] By adopting the above technical solution, based on the advantages of the device 200 in the above embodiment, the four-wheel alignment device of this embodiment also has the advantages of the device 200's high adjustment flexibility and accuracy.

[0082] 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 magnetic attractor, characterized in that, include: A connection structure for fixed connection with a device in a four-wheel alignment system; A magnetic attraction structure is provided, with one end of the magnetic attraction structure fixedly connected to the connecting structure, and the other end of the magnetic attraction structure being magnetically attracted to the lift of the vehicle, so that the device can be fixed at any position on the lift of the vehicle.

2. The magnetic suction element as described in claim 1, characterized in that, The magnetic attraction structure includes a magnetic component fixing base and at least one magnetic component. The magnetic component fixing base is fixedly connected to the connection structure, and the magnetic component is fixed on the magnetic component fixing base.

3. The magnetic suction element as described in claim 2, characterized in that, The magnetic attraction structure includes a plurality of magnetic components, which are arranged along the length of the magnetic component fixing base.

4. The magnetic suction element as described in claim 2, characterized in that, The magnetic component mounting base is provided with multiple magnetic component mounting slots, and the magnetic component is detachably installed in the magnetic component mounting slots.

5. The magnetic suction element as described in claim 4, characterized in that, The magnetic component mounting base is provided with a magnetic surface for connecting with the lift of the vehicle. The magnetic component mounting groove is formed on the magnetic surface, and the surface of the magnetic component exposed at the opening of the magnetic component mounting groove is flush with the magnetic surface.

6. The magnetic suction element as described in claim 4, characterized in that, The magnetic component is provided with a first buffer layer on its outer sleeve; and / or, the magnetic component is provided with a second buffer layer in its fixing groove.

7. The magnetic suction element as described in claim 2, characterized in that, The cross-sectional shape of the magnetic component fixing seat is either racetrack-shaped or circular.

8. The magnetic attractor as described in any one of claims 2 to 7, characterized in that, The magnetic component fixing seat is provided with a connecting groove, and the connecting structure includes a connecting seat that is detachably embedded in the connecting groove.

9. The magnetic suction element as described in claim 8, characterized in that, The connection structure also includes a plug-in component connected to the connector, the plug-in component being used for plugging into and engaging with the device.

10. A four-wheel alignment device, characterized in that, The invention includes the magnetic attracting element and device according to any one of claims 1 to 9, wherein the device includes a four-wheel alignment measuring device and a four-wheel alignment calibration device, wherein the four-wheel alignment measuring device and the four-wheel alignment calibration device are respectively provided with the magnetic attracting element, and the magnetic attracting element is used to magnetically attract the lifting machine carrying the vehicle.

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