A rare earth permanent magnet suspension track lateral force regulation system and method

Abstract

The application provides a rare earth permanent magnet suspension track lateral force regulation system and method. The application uses track ear walls vertically arranged outside the permanent magnet track base to install the limiting mounting frame. The connecting support of the vehicle-mounted track base is used as the symmetry axis. Each group of lateral limiting magnetic groups symmetrically arranged on the inner side of the limiting mounting frame provides repulsion or attraction to the vehicle-mounted magnet group in a symmetrical manner, thereby providing damping to the lateral deviation of the vehicle-mounted track base. When the vehicle-mounted magnet group in the vehicle-mounted track base deviates to one side of the lateral limiting magnetic group, the distance between the magnet outside the vehicle-mounted magnet group and the lateral limiting magnetic group is shortened, and the attractive force or repulsive force of the lateral limiting magnetic group to the magnet outside the vehicle-mounted magnet group is increased, thereby pushing the vehicle-mounted track base back to the middle position. The application uses magnets to contactlessly limit the vehicle-mounted track, balance the lateral force of the magnets on the vehicle-mounted track, prevent the carriage from deviating, realize precise limiting, ensure the stable driving of the vehicle, and reduce safety hazards.

Description

Technical Field

[0001] This application relates to the field of magnetic levitation rail transit technology, and more specifically to a rare earth permanent magnet levitation rail lateral force control system and method. Background Technology

[0002] Rare-earth permanent magnet maglev transportation is a new type of transportation that has emerged in recent years. Based on the principle of "like poles attract, unlike poles repel" in rare-earth permanent magnet materials, it utilizes the constant magnetic force generated by these materials to achieve a non-mechanically contactible balance between the train carriages and the track. A linear motor drives the train to accelerate and decelerate, propelling the carriages. Rare-earth permanent magnet maglev rail transit systems are characterized by being green, energy-saving, lightweight, and fast, and have promising development prospects. Permanent magnet maglev tracks offer advantages such as zero-power levitation (green and energy-saving) and intelligent operation. Its development cost is only one-tenth that of a subway, making it a key area for the country's vigorously promoted new infrastructure development.

[0003] The drawback of existing permanent magnet levitation track technology is that a divergent magnetic field is easily generated between the track magnet and the onboard magnet. This generates a significant levitation force, accompanied by uncontrollable lateral forces. These lateral forces can cause unpredictable lateral movement of the vehicle, leading to track tilting and safety hazards. Currently, pulley systems are commonly used to prevent track tilting. Existing technologies typically add a set of pulleys parallel to the track on both sides, using the contact between the pulleys and the beam wall to prevent track deviation. However, this type of pulley system involves direct friction with the beam wall, easily causing tire wear and requiring frequent replacements. Therefore, there is an urgent need for a simplified and easy-to-operate solution to address the lateral deviation problem of magnetic levitation equipment. Summary of the Invention

[0004] This application addresses the shortcomings of existing technologies by providing a lateral force control system and method for rare-earth permanent magnet levitation tracks. Specifically, it addresses the problem of lateral tilting or imbalance of the onboard magnetic assembly in current rare-earth permanent magnet levitation tracks by providing a lateral limiting solution for permanent magnet levitation tracks. This solution can significantly reduce lateral tilting forces without affecting levitation efficiency, thereby improving the stability of the permanent magnet levitation track. The specific technical solution adopted in this application is as follows.

[0005] First, to achieve the above objectives, a rare-earth permanent magnet levitation track lateral force control system is proposed, comprising: a vehicle-mounted track base, which includes a horizontally arranged magnet mounting beam and a connecting bracket vertically connected to the magnet mounting beam, the top of the connecting bracket being connected to the middle of the magnet mounting beam, and the bottom of the connecting bracket being connected to the vehicle body; a permanent magnet track base, which includes a horizontally arranged magnet mounting base and a track ear wall vertically connected to the outer side of the magnet mounting base, the magnet mounting base being disposed between the magnet mounting beam and the vehicle body, and the track ear wall surrounding the outer side of the magnet mounting beam; and a vehicle-mounted magnet assembly, which is horizontally installed on the magnet mounting beam. The bottom surface of the device is symmetrically arranged around the connecting bracket; the permanent magnet track magnet assembly is horizontally installed on the top surface of the magnet mounting base, facing the vehicle-mounted magnet assembly and symmetrically arranged around the connecting bracket; the limiting mounting bracket is horizontally installed on the track ear wall, and the inner side of the limiting mounting bracket is provided with a magnet assembly mounting clip, the clamping height of the magnet assembly mounting clip is close to the installation height of the vehicle-mounted magnet assembly; the lateral limiting magnet assembly is fixedly installed on the outside of the vehicle-mounted magnet assembly by the magnet assembly mounting clip of the limiting mounting bracket, and is set in the same horizontal plane as the vehicle-mounted magnet assembly; there is no direct contact between the lateral limiting magnet assembly, the vehicle-mounted magnet assembly, and the permanent magnet track magnet assembly.

[0006] Optionally, in any of the above-described rare-earth permanent magnet levitation track lateral force control systems, the on-board magnet assembly and the permanent magnet track magnet assembly are mutually repulsive to keep the permanent magnet track base suspended above the permanent magnet track base.

[0007] Optionally, in the rare-earth permanent magnet levitation track lateral force control system described above, the permanent magnet track base includes two sets arranged parallel and symmetrically around the connecting bracket. The magnet mounting bases of the two sets of permanent magnet track bases are respectively located below the on-board magnet groups on both sides of the connecting bracket and above the carriage. The track ear walls of the two sets of permanent magnet track bases are respectively located on the outer sides of both ends of the magnet mounting beam and extend vertically upward to at least the height of the magnet mounting beam. A gap is formed between the inner sides of the magnet mounting bases of the two sets of permanent magnet track bases for the connecting bracket to pass through. The permanent magnet track magnet group installed on the magnet mounting base on the left side of the carriage is magnetically repelled by the on-board magnet group on the left side of the connecting bracket, and the permanent magnet track magnet group installed on the magnet mounting base on the right side of the carriage is magnetically repelled by the on-board magnet group on the right side of the connecting bracket.

[0008] Optionally, in the rare earth permanent magnet levitation track lateral force control system as described above, the lateral limiting magnetic group on the limiting mounting frame of the permanent magnet track base on the left side of the carriage is mutually exclusive with the magnet at the leftmost end of the magnet mounting beam, and the lateral limiting magnetic group on the limiting mounting frame of the permanent magnet track base on the right side of the carriage is mutually exclusive with the magnet at the rightmost end of the magnet mounting beam.

[0009] Optionally, in the rare earth permanent magnet levitation track lateral force control system as described above, the lateral limiting magnetic group on the limiting mounting frame of the permanent magnet track base on the left side of the carriage attracts the magnet at the leftmost end of the magnet mounting beam, and the lateral limiting magnetic group on the limiting mounting frame of the permanent magnet track base on the right side of the carriage attracts the magnet at the rightmost end of the magnet mounting beam.

[0010] Optionally, in any of the above-described rare-earth permanent magnet levitation track lateral force control systems, the limiting mounting brackets are installed at preset intervals along the length direction of the permanent magnet track base, and the preset intervals do not exceed the length of the carriage along the length direction of the permanent magnet track base.

[0011] Optionally, in the rare earth permanent magnet levitation track lateral force control system described above, the permanent magnet track base has mounting adjustment holes on both sides of the track ear wall at preset intervals; the limiting mounting frame includes a horizontally arranged connecting rod and a magnetic assembly mounting clamp fixedly arranged at the inner end of the connecting rod. The connecting rod passes horizontally through the mounting adjustment hole and is fixedly arranged on the inner side of the track ear wall by bolts, adjusting the horizontal interval between the lateral limiting magnetic assembly and the vehicle-mounted magnet assembly in the magnetic assembly mounting clamp.

[0012] Meanwhile, to achieve the above objectives, this application also provides a method for controlling the lateral force of a rare-earth permanent magnet levitation track, which is used in any of the rare-earth permanent magnet levitation track lateral force control systems described above. The steps of the lateral force control method include: symmetrically opening installation adjustment holes at preset intervals on the track ear walls on both sides of the permanent magnet track base; horizontally extending the connecting rod of the limiting mounting bracket into the installation adjustment holes and fixing the magnetic assembly mounting clip at the end of the connecting rod between the track ear wall and the vehicle track base with bolts; keeping the lateral limiting magnetic assembly fixed in the magnetic assembly mounting clip on the extension line of the vehicle magnet assembly on the vehicle track base; and using the attractive or repulsive force between the lateral limiting magnetic assembly and the outer end magnet of the vehicle magnet assembly to keep the vehicle magnet assembly facing directly above the permanent magnet track magnet assembly at the bottom of the permanent magnet track base.

[0013] Optionally, in any of the above-described methods for controlling the lateral force of a rare-earth permanent magnet levitation track, the height of the limiting mounting bracket is matched to the height of the vehicle-mounted track base in the permanent magnet track base. The limiting mounting bracket is set close to both ends of the vehicle-mounted track base at the track turning position and away from both ends of the vehicle-mounted track base at the track straight position.

[0014] Beneficial effects

[0015] This application utilizes a track lug mounting bracket vertically mounted on the outer side of a permanent magnet track base. With the connecting bracket of the vehicle-mounted track base as the axis of symmetry, symmetrically arranged lateral limiting magnetic groups on the inner side of the mounting bracket provide repulsive or attractive forces on the vehicle-mounted magnet assembly, thereby damping the lateral deviation of the vehicle-mounted track base. When the vehicle-mounted magnet assembly in the track base deviates to one side of the lateral limiting magnetic group, the distance between the magnet on the outer side of that assembly and the lateral limiting magnetic group shortens, increasing the attractive or repulsive force exerted by the lateral limiting magnetic group on the outer magnet of that assembly. This pushes the vehicle-mounted track base back to the center position, canceling the lateral deviation. This application uses magnets for non-contact limiting of the vehicle-mounted track, balancing its lateral forces and preventing lateral deflection of the carriage. The lateral tilting force can be adjusted by changing the position, size, and grade of the magnet assembly, achieving precise limiting. This ensures vehicle stability during operation and reduces safety hazards.

[0016] Other features and advantages of this application will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing this application. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present application and form part of the specification. Together with the embodiments of the present application, they serve to explain the present application but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 A schematic cross-sectional view of a permanent magnet levitation track system applying the lateral force control method of this application;

[0019] Figure 2 This is a structural schematic diagram of the limiting mounting bracket used in this application;

[0020] Figure 3 This is a cross-sectional schematic diagram of another permanent magnet levitation track system applying the lateral force control method of this application;

[0021] Figure 4 This is a cross-sectional schematic diagram of a permanent magnet levitation track system that does not employ the lateral force control method described in this application.

[0022] In the diagram, 1 represents the vehicle-mounted track base; 2 represents the vehicle-mounted magnet assembly; 3 represents the lateral limiting magnet assembly; 4 represents the limiting mounting frame; 5 represents the permanent magnet track base; 6 represents the permanent magnet track magnet assembly; and 7 represents the vehicle carriage. Detailed Implementation

[0023] To make the objectives and technical solutions of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the described embodiments of this application without creative effort are within the scope of protection of this application.

[0024] Those skilled in the art will understand that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless defined as herein.

[0025] The meaning of "and / or" as used in this application includes situations where each exists alone or both exist simultaneously.

[0026] In this application, "inner" and "outer" refer to directions relative to the permanent magnet track itself, with the direction pointing towards the magnet assembly inside the permanent magnet track being "inner" and the opposite being "outer," rather than being a specific limitation on the device mechanism of this application.

[0027] The terms "left" and "right" as used in this application refer to the user's left side as the left and the user's right side as the right when the user is facing the direction of travel of the carriage, and do not constitute a specific limitation on the device mechanism of this application.

[0028] The term "connection" as used in this application can mean a direct connection between components or an indirect connection between components through other components.

[0029] The terms "up" and "down" as used in this application refer to the user being above the user when the user is facing the direction of travel of the carriage, and "down" is the user below the user, rather than being a specific limitation on the device mechanism of this application.

[0030] In this application, "main direction" means the direction along parallel main tracks or the direction along the unbranched main tracks.

[0031] Figure 1 A rare-earth permanent magnet levitation track lateral force control system according to this application includes:

[0032] The vehicle-mounted track base 1 of this application includes a horizontally arranged magnet mounting beam and a connecting bracket that is vertically connected to the magnet mounting beam. The top end of the connecting bracket is connected to the middle part of the magnet mounting beam, and the bottom end of the connecting bracket is connected to the carriage 7.

[0033] The permanent magnet track base 5 of this application includes a horizontally arranged magnet mounting base and a track ear wall vertically connected to the outside of the magnet mounting base. The magnet mounting base is arranged between the magnet mounting beam and the carriage 7, and the track ear wall surrounds the outside of the magnet mounting beam.

[0034] The vehicle-mounted magnet assembly 2 is horizontally installed on the bottom surface of the magnet mounting beam and symmetrically arranged with the connecting bracket as the center. By adjusting the polarity direction of the magnets, it is kept mutually repelled with the permanent magnet track magnet assembly 6, so that the permanent magnet track base 5 can always be suspended above the permanent magnet track base 6.

[0035] The permanent magnet track magnet assembly 6 is horizontally installed on the top surface of the magnet mounting base, facing the vehicle-mounted magnet assembly 2 and symmetrically arranged with the connecting bracket as the center;

[0036] The limiting mounting bracket 4 is horizontally installed on the rail ear wall. A magnetic assembly mounting clip is provided on the inner side of the limiting mounting bracket 4. The clamping height of the magnetic assembly mounting clip is close to the installation height of the vehicle-mounted magnet assembly 2.

[0037] The lateral limiting magnetic assembly 3 is fixedly installed on the outside of the vehicle-mounted magnetic assembly 2 by the magnetic assembly mounting clip of the limiting mounting bracket 4, and is installed in the same horizontal plane as the vehicle-mounted magnetic assembly 2.

[0038] There is no direct contact between the lateral limiting magnetic group 3, the vehicle-mounted magnet group 2, and the permanent magnet track magnet group 6.

[0039] In a more specific implementation, to ensure that the lateral force control system of the rare-earth permanent magnet levitation track on the carriage can be subjected to balanced force, this application preferably sets the permanent magnet track base 5 as comprising two sets arranged parallel and symmetrically around the connecting bracket. The magnet mounting bases of the two sets of permanent magnet track bases 5 are respectively located below the on-board magnet groups 2 on both sides of the connecting bracket and above the carriage 7. The track ear walls of the two sets of permanent magnet track bases 5 are respectively located on the outer sides of both ends of the magnet mounting beam and extend vertically upward to at least the height of the magnet mounting beam. A gap is formed between the inner sides of the magnet mounting bases of the two sets of permanent magnet track bases 5 for the connecting bracket to pass through. Thus, the permanent magnet track magnet group 6 installed on the magnet mounting base on the left side of the carriage 7 can maintain magnetic repulsion with the on-board magnet group 2 on the left side of the connecting bracket; the permanent magnet track magnet group 6 installed on the magnet mounting base on the right side of the carriage 7 can maintain magnetic repulsion with the on-board magnet group 2 on the right side of the connecting bracket.

[0040] In this setting method of the permanent magnet track base 5, the present application can set the lateral limiting magnetic group 3 on the limiting mounting bracket 4 of the permanent magnet track base 5 on the left side of the carriage 7 to be mutually exclusive with the magnet at the leftmost end of the magnet mounting crossbeam, and set the lateral limiting magnetic group 3 on the limiting mounting bracket 4 of the permanent magnet track base 5 on the right side of the carriage 7 to be mutually exclusive with the magnet at the rightmost end of the magnet mounting crossbeam. Thus, the present application can simultaneously install lateral positioning magnetic groups with the same orientation as the magnets or magnet groups at the edges of the vehicle-mounted track on both the left and right sides of the vehicle-mounted track. During the process of the train stopping to pick up and drop off passengers and running at high speed, due to the change in the vehicle body load resulting in unstable center of gravity of the carriage and fluctuations in the levitation force of the vehicle-mounted track, which may cause the magnetic circuit of the vehicle-mounted magnetic track to shift and lead to the train tipping over and derailing. By using the principle of like poles repelling each other between the lateral positioning magnetic group and the vehicle-mounted magnet group, a horizontal force is exerted on the vehicle-mounted magnet when it undergoes lateral deviation in a non-contact manner, prompting it to return to its original normal running track, stabilizing the center of gravity of the carriage magnet, and preventing it from tipping over.

[0041] In Figure 2 In the implementation method shown, the present application can also choose to set the lateral limiting magnetic group 3 on the limiting mounting bracket 4 of the permanent magnet track base 5 on the left side of the carriage 7 to be attractive to the magnet provided at the leftmost end of the magnet mounting crossbeam, and set the lateral limiting magnetic group 3 on the limiting mounting bracket 4 of the permanent magnet track base 5 on the right side of the carriage 7 to be attractive to the magnet provided at the rightmost end of the magnet mounting crossbeam. Thus, the present application can, through the lateral positioning magnetic group composed of a single group or several permanent magnets, and through magnetic circuit design, make the magnets or magnet groups at the outermost layer of the vehicle-mounted magnet have the same magnetic pole direction as the lateral positioning magnetic group, so that the two generate an acting force to prevent the vehicle-mounted track from lateral deviation.

[0042] The above magnetic track limiting method adopted by the present application uses two groups of limiting magnets symmetrically arranged on the limiting mounting bracket to perform non-contact limiting on the vehicle-mounted track through magnetic force. The lateral limiting magnets installed in the limiting mounting bracket can be installed in groups at intervals of D (0 m < D < carriage length) along the track length direction. The lateral positioning magnets in each group are installed with an adjustable positioning design, and the repulsive force can be adjusted by adjusting the position of the magnet group to face the vehicle-mounted track magnet group.

[0043] Among them, the adjustable limiting mounting bracket 4 can adopt Figure 2The installation is performed as shown: A pair of installation adjustment holes are opened on the two side rail ear walls at preset intervals on the permanent magnet track base 5; the limiting magnet is installed and fixed in the groove of the telescopic bracket; the telescopic bracket passes through the installation adjustment holes in the rail ear wall and is laterally fixed to the rail ear wall with bolts; the positioning is adjusted by adjusting the extension length of the telescopic bracket. Specifically, the limiting mounting bracket 4 can be configured as including a horizontally arranged connecting rod and a magnetic assembly mounting clamp fixed to the inner end of the connecting rod. During installation, the connecting rod passes horizontally through the installation adjustment holes and is fixed to the inner side of the rail ear wall with bolts; the horizontal interval between the lateral limiting magnetic assembly 3 and the vehicle-mounted magnet assembly 2 in the magnetic assembly mounting clamp is adjusted. Thus, the limiting magnet of this application is installed and fixed in the groove of the telescopic bracket, and the telescopic bracket... Figure 2 The magnets pass through holes in the track lugs and are fixed to the track lugs with bolts. Therefore, this application only requires adjusting the extension length of the telescopic bracket to adjust the lateral limiting force of the lateral limiting magnet group 3 on the vehicle-mounted magnet group, thus ensuring that the vehicle will not deviate from the track and overturn when turning. The size, dimensions, grade, and combination of each magnet in this application need to be customized according to the actual needs of the vehicle's magnets, but the overall effect should achieve the purpose of providing lateral horizontal repulsive force.

[0044] The rare-earth permanent magnet levitation track lateral force control system of this application provides the following specific steps for lateral force control:

[0045] On both sides of the permanent magnet track base 5, symmetrical installation adjustment holes are opened at preset intervals. The connecting rod of the limiting mounting bracket 4 is horizontally extended into the installation adjustment hole and the magnetic assembly mounting clip at the end of the connecting rod is fixed between the track ear wall and the vehicle track base 1 by bolts. The lateral limiting magnetic assembly 3 fixed in the magnetic assembly mounting clip is located on the extension line of the vehicle magnet assembly 2 on the vehicle track base 1. The attraction or repulsion between the lateral limiting magnetic assembly 3 and the magnet at the outer end of the vehicle magnet assembly 2 is used to keep the vehicle magnet assembly 2 facing directly above the permanent magnet track magnet assembly 6 at the bottom of the permanent magnet track base 5, providing non-contact limiting.

[0046] To ensure the limiting effect, this application preferably sets the height of the limiting mounting bracket 4 to match the height of the vehicle-mounted track base 1 in the permanent magnet track base 5. The limiting mounting bracket 4 is set close to both ends of the vehicle-mounted track base 1 at the track turning position to provide sufficient limiting torque, while it is set slightly away from both ends of the vehicle-mounted track base 1 at the straight track position to reduce interference with the levitation repulsion force between the track magnet and the vehicle magnet.

[0047] For comparison, please refer to the following proportions. Figure 4The permanent magnet levitation track device has no limit devices on both sides of the track. When the train stops to pick up or drop off passengers, or during rapid operation, changes in the train's load can cause instability in the center of gravity of the carriage and fluctuations in the levitation force of the onboard track, which may cause the magnetic track of the onboard magnetic track to deviate, leading to the train overturning and derailing.

[0048] The above are merely embodiments of this application, and their descriptions are quite specific and detailed, but they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application.

Claims

1. A method for controlling the lateral force of a rare-earth permanent magnet levitation track, characterized in that, Used in rare earth permanent magnet levitation track lateral force control system The rare earth permanent magnet levitation track lateral force control system includes a vehicle track base (1), which includes a horizontally arranged magnet mounting beam and a connecting bracket that is vertically connected to the magnet mounting beam. The top of the connecting bracket is connected to the middle of the magnet mounting beam, and the bottom of the connecting bracket is connected to the carriage (7). The permanent magnet track base (5) includes a horizontally arranged magnet mounting base and a track ear wall vertically connected to the outside of the magnet mounting base. The magnet mounting base is located between the magnet mounting beam and the carriage (7), and the track ear wall surrounds the outside of the magnet mounting beam. The vehicle-mounted magnet assembly (2) is horizontally installed on the bottom surface of the magnet mounting beam and symmetrically arranged with the connecting bracket as the center. By adjusting the polarity direction of the magnets, it is kept mutually repelled with the permanent magnet track magnet assembly (6) so that the permanent magnet track base (5) can always be suspended above the permanent magnet track magnet assembly (6). The permanent magnet track magnet assembly (6) is horizontally installed on the top surface of the magnet mounting base, facing the vehicle-mounted magnet assembly (2) and symmetrically arranged with the connecting bracket as the center; A limiting mounting bracket (4) is horizontally mounted on the rail ear wall. A magnetic assembly mounting clip is provided on the inner side of the limiting mounting bracket (4). The clamping height of the magnetic assembly mounting clip is close to the installation height of the vehicle-mounted magnet assembly (2). The lateral limiting magnetic assembly (3) is fixedly installed on the outside of the vehicle magnet assembly (2) by the magnetic assembly mounting clip of the limiting mounting bracket (4), and is located in the same horizontal plane as the vehicle magnet assembly (2). The permanent magnet track base (5) has installation adjustment holes on the two sides of the track ear wall at preset intervals; The limiting mounting bracket (4) includes a horizontally arranged connecting rod and a magnetic assembly mounting clip fixedly arranged at the inner end of the connecting rod. The connecting rod passes horizontally through the mounting adjustment hole and is fixed to the inner side of the track ear wall by bolts to adjust the horizontal distance between the lateral limiting magnetic group (3) and the vehicle magnet group (2) in the magnetic group mounting clamp. There is no direct contact between the lateral limiting magnetic group (3), the vehicle-mounted magnet group (2), and the permanent magnet track magnet group (6); The steps of the lateral force control method include: On both sides of the permanent magnet track base (5), symmetrical installation adjustment holes are opened at preset intervals. The connecting rod of the limiting mounting bracket (4) is horizontally inserted into the installation adjustment hole and the magnetic assembly mounting clip at the end of the connecting rod is fixed between the track ear wall and the vehicle track base (1) by bolts. The lateral limiting magnetic assembly (3) fixed in the magnetic assembly mounting clip is located on the extension line of the vehicle magnet assembly (2) on the vehicle track base (1). The attraction or repulsion between the lateral limiting magnetic assembly (3) and the outer end magnet of the vehicle magnet assembly (2) is used to keep the vehicle magnet assembly (2) facing directly above the permanent magnet track magnet assembly (6) at the bottom of the permanent magnet track base (5). The height of the limiting mounting bracket (4) is matched with the height of the vehicle-mounted track base (1) in the permanent magnet track base (5). The limiting mounting bracket (4) is set close to the two ends of the vehicle-mounted track base (1) at the track turning position and away from the two ends of the vehicle-mounted track base (1) at the track straight position.

2. The method for controlling the lateral force of a rare-earth permanent magnet levitation track as described in claim 1, characterized in that, The vehicle-mounted magnet assembly (2) and the permanent magnet track magnet assembly (6) are mutually repulsive, so as to keep the permanent magnet track base (5) suspended above the permanent magnet track base (5).

3. The method for controlling the lateral force of a rare-earth permanent magnet levitation track as described in claim 1, characterized in that, The permanent magnet track base (5) includes two sets arranged symmetrically and parallel to each other with the connecting bracket as the center. The magnet mounting bases of the two sets of permanent magnet track bases (5) are respectively located below the vehicle-mounted magnet groups (2) on both sides of the connecting bracket and above the carriage (7). The track ear walls of the two sets of permanent magnet track bases (5) are respectively located on the outer sides of both ends of the magnet mounting beam and extend vertically upward to the height of the magnet mounting beam. A gap is formed between the inner sides of the magnet mounting bases of the two sets of permanent magnet track bases (5) for the connecting bracket to pass through. The permanent magnet track magnet assembly (6) installed on the magnet mounting base on the left side of the carriage (7) and the vehicle-mounted magnet assembly (2) on the left side of the connecting bracket are magnetically repelled. The permanent magnet track magnet assembly (6) installed on the magnet mounting base on the right side of the carriage (7) and the vehicle-mounted magnet assembly (2) on the right side of the connecting bracket are magnetically repelled.

4. The method for controlling the lateral force of a rare-earth permanent magnet levitation track as described in claim 1, characterized in that, The lateral limiting magnetic group (3) on the limiting mounting frame (4) of the permanent magnet track base (5) on the left side of the carriage (7) is mutually exclusive with the magnet at the leftmost end of the magnet mounting beam, and the lateral limiting magnetic group (3) on the limiting mounting frame (4) of the permanent magnet track base (5) on the right side of the carriage (7) is mutually exclusive with the magnet at the rightmost end of the magnet mounting beam.

5. The method for controlling the lateral force of a rare-earth permanent magnet levitation track as described in claim 1, characterized in that, The lateral limiting magnetic group (3) on the limiting mounting frame (4) of the permanent magnet track base (5) on the left side of the carriage (7) attracts the magnet at the leftmost end of the magnet mounting beam, and the lateral limiting magnetic group (3) on the limiting mounting frame (4) of the permanent magnet track base (5) on the right side of the carriage (7) attracts the magnet at the rightmost end of the magnet mounting beam.

6. The method for controlling the lateral force of a rare-earth permanent magnet levitation track as described in claim 1, characterized in that, The limiting mounting bracket (4) is installed at a preset distance along the length of the permanent magnet track base (5), and the preset distance does not exceed the length of the carriage (7) along the length of the permanent magnet track base (5).

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