Electromagnetic drive switching high-speed magnetic levitation turnout

Abstract

The application provides a high-speed electromagnetic driving switchable maglev turnout, and relates to the technical field of maglev rail transit. The high-speed electromagnetic driving switchable maglev turnout comprises a turnout base, straight track plates, side track plates, transition track plates, a turnout area running rail and a switch control system arranged on the turnout base. The straight track plates are provided with straight coils, and the side track plates are provided with side coils. The transition track plates are used to form track sections for the transition of a maglev vehicle from a pre-turnout line to a post-turnout straight line or a post-turnout side line. The turnout area running rail is used to form a support running surface for the maglev vehicle to pass through the turnout area. The switch control system is used to perform vector control on the straight coils and the side coils to control the direction of the normal force formed by the straight coils and the side coils on the maglev vehicle, so that the maglev vehicle obtains a lateral guiding force pointing to the post-turnout straight line or the post-turnout side line. The application has the advantages of simple structure, small mechanical action, good switch smoothness and high control precision.

Description

Technical Field

[0001] This invention relates to the field of maglev rail transit technology, and in particular to a high-speed maglev turnout with electromagnetic drive. Background Technology

[0002] Superconducting electric maglev trains are high-speed trains that utilize superconducting magnetic levitation technology and electric drive technology. By using superconducting magnetic levitation technology to levitate the train above the track, it eliminates the frictional resistance of traditional rail trains, thus enabling higher operating speeds and lower energy consumption. Superconducting electric maglev trains have advantages such as high speed, low energy consumption, environmental friendliness, and high safety, and are considered an important development direction for future high-speed intercity transportation. Currently, some countries have conducted research and testing on superconducting electric maglev train technology and have made some progress. With continuous technological advancements and cost reductions, superconducting electric maglev trains are expected to become one of the main modes of high-speed intercity transportation in the future.

[0003] Low-speed turnouts are numerous in large passenger stations and depots of superconducting electric maglev railways, and their proportion of track length and construction cost directly affect the construction cost of passenger stations. As one of the key technologies of superconducting electric maglev railways, the independent innovation research of low-speed turnouts can provide important reference for the construction of high-speed maglev lines in my country.

[0004] In related technologies, the switching principle of low-speed turnouts in maglev railways mostly relies on structural deformation to guide the turnout. Some existing schemes even require the combined action of planar movement, vertical movement, and planar rotation to complete the vehicle track switching. Such schemes generally suffer from problems such as long turnout length, complex switch structure, large mechanical system, high construction cost, and large maintenance workload, making it difficult to balance structural simplicity, switch reliability, and ease of operation and maintenance. Summary of the Invention

[0005] In view of one or more of the above-mentioned defects or improvement needs of the prior art, the present invention provides a high-speed maglev turnout with electromagnetic drive, which uses the linear motor normal electromagnetic force formed between the on-board superconducting magnet and the ground stator coil to realize vehicle track switching, and completes the turnout guidance between the straight track and the side track while minimizing the mechanical moving parts.

[0006] The present invention provides a high-speed maglev turnout with electromagnetic drive, which adopts the following technical solution: A high-speed maglev turnout with electromagnetic drive, used to realize track switching between the track before the turnout and the straight track and the side track after the turnout, includes a turnout base and a component disposed on the turnout base: A straight-strand track plate, on which straight-strand coils are installed; A side track plate is disposed on one side of the straight track plate, and a side coil is disposed thereon; A transition track slab is provided between the straight track slab and the side track slab to form a track section for the maglev vehicle to transition from the line before the turnout to the straight track or the side track after the turnout. The branch section running rail is set between the straight track plate and the side track plate to form a supporting running surface for maglev vehicles to pass through the branch section; A turnout control system is used to perform vector control on the straight track coil and the side track coil to control the direction and / or magnitude of the linear motor normal force formed by the straight track coil and the side track coil on the on-board magnet of the maglev vehicle, so that the maglev vehicle obtains a lateral guiding force pointing towards the straight track or the side track after the turnout.

[0007] Furthermore, the transition track plate can be switched between a straight strand engagement state and a side strand engagement state. A straight strand movable coil is provided on the side of the transition track plate near the straight strand track plate, and a side strand movable coil is provided on the side of the transition track plate near the side strand track plate. When the transition track plate is in the straight track engagement state, the straight track movable coil and the straight track coil cooperate to form the electromagnetic drive section corresponding to the straight track after the turnout; When the transition track plate is in the side strand engagement state, the side strand movable coil and the side strand coil cooperate to form the electromagnetic drive section corresponding to the side strand line after the turnout.

[0008] Furthermore, a rotating shaft is provided on the turnout base, and the transition track plate rotates around the rotating shaft to switch between the straight track engagement state and the side track engagement state. When the transition track plate is in the straight track engagement state, the transition track plate and the straight track plate are arranged opposite to each other and together form the track section corresponding to the straight track line after the turnout. When the transition track plate is in the side track engagement state, the transition track plate and the side track plate are arranged opposite to each other and together form the track section corresponding to the side track line after the turnout.

[0009] Furthermore, the straight track slab extends in a straight line along the direction of the line in front of the turnout, the side track slab extends in a curved direction along the direction of the side track behind the turnout, and the transition track slab has a gradually widening plate structure in the plane, which is narrower on the side closer to the line in front of the turnout and wider on the side farther away from the line in front of the turnout.

[0010] Furthermore, the straight track plate has a straight guide surface on the side near the side track plate, the side track plate has a side guide surface on the side near the straight track plate, the transition track plate has a first guide surface on the side near the straight track plate, and a second guide surface on the side near the side track plate. The straight guide surface, the side guide surface, the first guide surface, and the second guide surface are all used to cooperate with the guide wheels of the maglev vehicle. The turn control system controls the direction and / or magnitude of the linear motor normal force formed by the straight coil and the side coil, providing lateral guiding force in the corresponding direction to the maglev vehicle.

[0011] Furthermore, when the transition track plate is in a straight-strut engagement state, the distance between the starting end of the first guide surface and the straight-strut guide surface is greater than the standard gauge, and gradually returns to the standard gauge along the extension direction. When the transition track plate is in the side strand engagement state, the distance between the starting end of the second guide surface and the side strand guide surface is greater than the standard track gauge, and gradually returns to the standard track gauge along the extension direction.

[0012] Furthermore, the switch control system includes a controller and a vector control unit. The controller is used to output a switch control signal, and the vector control unit is used to perform vector control on the straight coil and the side coil according to the switch control signal, so as to control the direction and / or magnitude of the linear motor normal force formed by the straight coil and the side coil on the on-board magnet of the maglev vehicle.

[0013] Furthermore, a speed measuring and positioning coil is provided on the turnout base. The speed measuring and positioning coil is electrically connected to the turnout control system. The speed measuring and positioning coil is used to provide the turnout control system with the position and speed information of the maglev vehicle to determine the turnout time and the position of the on-board magnet, and accordingly control the direction and / or magnitude of the linear motor normal force formed by the straight coil and the side coil on the on-board magnet.

[0014] Furthermore, the running rail in the branch area includes a front section, a rear straight section, and a rear side section, all of which are double-rail structures. The running rails in the branch area intersect in the middle of the branch area to form an X-shaped intersection section, and then separate after the X-shaped intersection section to form a rear straight support path and a rear side support path, respectively.

[0015] Furthermore, the speed measuring and positioning coil comprises at least three sections, which are respectively located between the two rails of the front section, the straight section behind the turnout, and the side section behind the turnout of the turnout running rail in the turnout area.

[0016] In summary, the present invention has at least one of the following beneficial technical effects: 1. This invention sets up a switch control system and uses the switch control system to perform vector control on the straight coil and the side coil, thereby controlling the direction and / or magnitude of the normal force of the linear motor formed, so that the maglev vehicle obtains lateral guiding force pointing to the target track. Compared with the traditional turnout scheme that relies on a large-stroke mechanical turning structure, it has the advantages of fewer mechanical moving parts, fast response speed and high control accuracy. 2. This invention provides a transition track plate that can switch between straight track and side track states, allowing for local track widening transition with only a small range of rotation during vehicle turnout. This facilitates smooth contact between the guide wheels and the guide surface and reduces transition impact. Furthermore, after switching, the transition track plate can work with the corresponding track plate to form the track section and electromagnetic drive section corresponding to the target track, thereby improving the guidance continuity and electromagnetic drive continuity during maglev vehicle turnout. 3. In this invention, apart from the transition track slab, the main structure of the turnout does not require mechanical actions for track switching, which helps to reduce construction costs and later maintenance costs, and improve the turnout response speed; 4. This invention provides mechanical guidance and support for the guide wheels and running wheels of the maglev vehicle by setting up a straight guide surface, a side guide surface, a first guide surface, and a second guide surface, and combining them with the running rail in the turnout area. This allows the maglev vehicle to achieve a dynamic balance during turnout operations by the linear motor normal force generated by the coil, the lateral force between the guide wheels and the guide surface, and the frictional force between the running wheels and the running rail in the turnout area. This improves the operational stability and smoothness of the maglev vehicle during turnout operations. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a front view of a high-speed maglev turnout with electromagnetic drive switching in an embodiment of the present invention.

[0019] Figure 2 This is a perspective view of a high-speed maglev turnout with electromagnetic drive switching in an embodiment of the present invention.

[0020] Figure 3 yes Figure 2 A schematic diagram from the opposite side view.

[0021] Figure 4 This is a perspective view of the running track of the high-speed maglev turnout with electromagnetic drive switching in an embodiment of the present invention.

[0022] Figure 5 This is a top view of a high-speed maglev turnout with electromagnetic drive switching in an embodiment of the present invention.

[0023] Figure 6 This is a schematic diagram showing the distribution of speed measuring and positioning coils in a high-speed maglev turnout with electromagnetic drive switching in an embodiment of the present invention.

[0024] Figure 7 This is a schematic diagram of the forces acting on the straight track after the electromagnetically driven high-speed maglev turnout in an embodiment of the present invention.

[0025] Figure 8 This is a schematic diagram of the forces acting on the maglev vehicle passing the track behind the turnout of the high-speed maglev turnout with electromagnetic drive switching in an embodiment of the present invention.

[0026] Reference numerals: 1. Turnout base; 12. Speed ​​measuring and positioning coil; 2. Straight track slab; 21. Straight track guide surface; 3. Side track slab; 31. Side track guide surface; 4. Transition track slab; 41. Straight track movable coil; 42. Side track movable coil; 43. First guide surface; 44. Second guide surface; 5. Straight track coil; 6. Side track coil; 7. Turnout running rail; 71. Front section of the turnout; 72. Straight track section after the turnout; 73. Side track section after the turnout; 8. Switch control system; 9. Maglev vehicle; 91. Running wheel; 92. Guide wheel; 93. Superconducting magnet. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention 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 invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0028] This invention discloses a high-speed maglev turnout with electromagnetic drive. (See reference...) Figure 1 and Figure 2This high-speed maglev turnout is used to connect the track before the turnout with the straight track and the side track after the turnout. The high-speed maglev turnout is mounted on a turnout base 1 and mainly includes a straight track 2, a side track 3, a transition track 4, a turnout running rail 7, and a switch control system 8. The straight track 2, side track 3, and transition track 4 together define the track section boundaries during vehicle passage. The turnout running rail 7 forms a supporting running surface for the maglev vehicle 9 to pass through the turnout area. The switch control system 8 performs vector control on the straight coil 5 and the side coil 6 to control the direction and / or magnitude of the linear motor normal force generated by the straight coil 5 and the side coil 6 on the superconducting magnet 93 on the maglev vehicle 9, thereby giving the maglev vehicle 9 a lateral guiding force pointing towards the straight track or the side track after the turnout. Compared to traditional turnout solutions that rely on long-stroke mechanical deformation or multi-mechanism linkage, this embodiment uses electromagnetic guidance to complete vehicle track switching, which can effectively simplify the main structure of the turnout and reduce the complexity of the mechanical system.

[0029] Specifically, such as Figure 2 and Figure 3 As shown, the turnout base 1 is preferably a foundation bearing member extending along the track direction, which can be a reinforced concrete foundation, a precast foundation beam, or other foundation structure that can meet the strength and stability requirements of track installation. The straight track plate 2 is mounted on the turnout base 1, extending in a straight line along the direction of the track before the turnout, preferably a strip-shaped or long strip-shaped member, with its length direction basically consistent with the direction of the track before the turnout. The side track plate 3 is mounted on one side of the straight track plate 2, extending in a curved direction along the direction leading to the side track after the turnout, preferably an arc-shaped plate member, with its inner side facing the transition track plate 4, so as to jointly define the track section when the vehicle turns into the side track with the transition track plate 4. Further, a straight coil 5 is mounted on the straight track plate 2, and a side coil 6 is mounted on the side track plate 3. Both the straight coil 5 and the side coil 6 are distributed along the extension direction of the corresponding track plates to form a continuous electromagnetic action section.

[0030] The transition track slab 4 is located between the straight track slab 2 and the side track slab 3. It is a slab structure, preferably a gradually widening slab structure that is narrower on the side closer to the turnout track and wider on the side farther away from the turnout track. In other words, the front of the transition track slab 4 is narrower, and the rear is wider, gradually widening away from the turnout track. Therefore, the transition track slab 4 can better adapt to the spatial changes in the turnout area as it transitions from a single path to a straight or side path, reserving a gradual transition area for the subsequent arrangement of guide surfaces and movable coils. Furthermore, the transition track slab 4 can switch between a straight track engagement state and a side track engagement state. When in different states, it is positioned opposite the straight track slab 2 or the side track slab 3, respectively, and together they form the corresponding track sections, thus providing corresponding boundary constraints and electromagnetic drive conditions for the maglev vehicle 9 to switch to different tracks.

[0031] To reduce the range of motion of the transition track slab 4, this embodiment preferably includes a rotating shaft on the turnout base 1, around which the transition track slab 4 is rotated. Furthermore, the rotating shaft can be positioned on the side of the transition track slab 4 away from the track before the turnout, allowing the transition track slab 4 to undergo a small angular displacement around the rear support point, with its narrower front and wider rear section shape. Thus, in the straight track configuration, the transition track slab 4 and the straight track slab 2 are positioned opposite each other and together form the track section corresponding to the straight track after the turnout; in the side track configuration, the transition track slab 4 and the side track slab 3 are positioned opposite each other and together form the track section corresponding to the side track after the turnout. Compared to schemes involving large-scale translation, lifting, or combined rotation of the entire track section, this embodiment achieves local section switching only through a small-scale rotation of the transition track slab 4, which helps reduce mechanical movement, improves response speed, and lowers subsequent maintenance costs.

[0032] Specifically, such as Figure 5 As shown, when the maglev vehicle 9 passes through the straight track, the transition track plate rotates counterclockwise by 1°, widening the track gauge between the corresponding guide surfaces from 3300mm to 3500mm. This allows the guide wheel 92 of the maglev vehicle 9 to gradually establish contact with the guide surface. As the maglev vehicle 9 continues to move forward, the track gauge gradually decreases along the running direction and returns to the standard gauge of 3300mm. At this point, the maglev vehicle 9 resumes using the guide wheel 92 for guidance, and the guide surface of the straight track plate 2, the straight track guide surface 21, and the first guide surface 43 together form the guide surface that engages with the guide wheel 92. When the maglev vehicle 9 passes through the side track, the principle is the same as when it passes through the straight track.

[0033] Furthermore, to form continuous electromagnetic drive sections when the transition track slab 4 is in different states, a straight track movable coil 41 is provided on the side of the transition track slab 4 closest to the straight track slab 2, and a side track movable coil 42 is provided on the side of the transition track slab 4 closest to the side track slab 3. When the transition track slab 4 is in the straight track engagement state, the straight track movable coil 41 and the straight track coil 5 are arranged opposite each other and cooperate to form the electromagnetic drive section corresponding to the straight track after the turnout; when the transition track slab 4 is in the side track engagement state, the side track movable coil 42 and the side track coil 6 are arranged opposite each other and cooperate to form the electromagnetic drive section corresponding to the side track after the turnout. Thus, the vehicle does not rely solely on the coils on the fixed track slab for force within the transition section, but can form a continuous electromagnetic action interval corresponding to the target track by combining the current state of the transition track slab 4, thereby improving the lateral guidance stability of the vehicle during the turnout process.

[0034] To further ensure the continuity of guidance and smoothness of transition for the maglev vehicle 9 during the switching process, this embodiment provides guide surfaces on the straight track slab 2, the side track slab 3, and the transition track slab 4. Specifically, the straight track slab 2 has a straight guide surface 21 on the side of the side track slab 3, the side track slab 3 has a side guide surface 31 on the side of the straight track slab 2, the transition track slab 4 has a first guide surface 43 on the side of the straight track slab 2, and the transition track slab 4 has a second guide surface 44 on the side of the side track slab 3. Each of the above guide surfaces can preferably be a long strip-shaped vertical surface, a sloping vertical surface, or an arc surface structure extending along the length direction of the corresponding track slab. Its extension direction is basically consistent with the vehicle's running direction, and its surface is preferably a continuous smooth surface so as to roll into contact with or abut against the guide wheels 92 of the maglev vehicle 9 for guidance.

[0035] Furthermore, the straight guide surface 21, the side guide surface 31, the first guide surface 43, and the second guide surface 44 are all used to cooperate with the guide wheel 92 of the maglev vehicle 9, and under the electromagnetic guidance effect formed by the switching of the current direction and / or magnitude of the straight coil 5 and the side coil 6, they provide lateral guiding force to the maglev vehicle 9 in the corresponding direction. That is to say, the electromagnetic guidance is responsible for driving the vehicle to deflect towards the target track, while the mechanical cooperation between the guide surface and the guide wheel 92 further restricts the lateral position and smoothly corrects the vehicle attitude. The two work together to avoid the transient instability problem caused by relying on only a single electromagnetic force.

[0036] Specifically, in the straight-track engagement state, the distance between the starting end of the first guide surface 43 and the straight-track guide surface 21 is greater than the standard gauge, and gradually returns to the standard gauge along the extension direction; in the side-track engagement state, the distance between the starting end of the second guide surface 44 and the side-track guide surface 31 is greater than the standard gauge, and gradually returns to the standard gauge along the extension direction. Therefore, after the transition track plate 4 switches to the target state, the guide surface combination corresponding to the target side will not directly form a rigid clamping of the standard gauge at the initial position, but will first provide an expanded guide spacing, allowing the guide wheels 92 of the maglev vehicle 9 to gradually approach the guide surface and establish contact under relatively gentle conditions, and then gradually return to the standard gauge as the vehicle moves forward. This gradual guide spacing setting from large to small helps reduce the impact when the guide wheels 92 initially contact the guide surface, improving the smoothness of the turnout. Furthermore, a small range of rotation of the transition track plate 4 can achieve local track widening transition, thus ensuring the guiding effect while avoiding large-scale structural displacement.

[0037] It should be noted that, in this embodiment, the standard gauge refers to the design reference distance between the two opposing guide surfaces corresponding to the normal guiding engagement of the guide wheels 92 of the maglev vehicle 9 when the maglev vehicle 9 is in normal guided operation. In this embodiment, the standard gauge is 3300mm. That is to say, after the maglev vehicle 9 completes the transition guidance and enters a stable operating state, the target distance restored between the first guide surface 43 and the straight guide surface 21, or between the second guide surface 44 and the side guide surface 31, is the standard gauge described in this application.

[0038] On the other hand, the branch area running track 7, in order to support the maglev vehicle 9 to pass through the branch area at low speed, is set between the straight track slab 2 and the side track slab 3, forming a supporting running surface for the maglev vehicle 9 to pass through the branch area. Preferably, the branch area running track 7 includes a front section 71, a rear straight track section 72, and a rear side track section 73. The front section 71, the rear straight track section 72, and the rear side track section 73 are all double-rail structures, that is, each section includes a pair of running tracks extending along the vehicle's traveling direction, respectively corresponding to the support requirements on both sides of the maglev vehicle 9's wheels 91. Further, referring to... Figure 4 and Figure 5In the turnout running rail 7, the running rails intersect in the middle of the turnout area to form an X-shaped intersection section, and then separate after the X-shaped intersection section to form the straight track support path and the side track support path after the turnout. Specifically, the double-rail structure of the front section 71 connects forward to the front track support path, and after entering the middle of the turnout area, it completes the path intersection and reorganization through the X-shaped intersection section, and then separates backward to form the double-rail support path of the straight track section 72 and the side track section 73 after the turnout. Thus, the running wheels 91 of the maglev vehicle 9 can always obtain continuous support when passing through the turnout area, and then, in conjunction with the guiding action of the guide wheels 92 and the guide surface, complete a smooth track change. Preferably, the turnout running rail 7 can be made of concrete structure, especially integrally cast or segmented precast concrete components, to balance load-bearing capacity, structural stability and construction convenience. In alternative embodiments, the turnout running rail 7 can also be made of steel structure, steel-concrete composite structure or other planar support structure formed by integral casting suitable for track support.

[0039] Preferably, the switch control system 8 includes a controller and a vector control unit. The controller outputs a switch control signal, and the vector control unit performs vector control on the straight coil 5 and the side coil 6 according to the switch control signal, so as to control the direction and / or magnitude of the linear motor normal force formed by the straight coil 5 and the side coil 6 on the superconducting magnet 93 on the maglev vehicle 9. Specifically, the controller can be an industrial controller, PLC, embedded control module, or other control components capable of logic judgment and control output; the vector control unit can be a power conversion circuit, drive control module, power electronic control unit, or other electrical control structure capable of coil vector control. Thus, the switch control system 8 can control the straight coil 5 and the side coil 6 according to the preset switch command, and adjust the direction and / or magnitude of the linear motor normal force formed by the straight coil 5 and the side coil 6 on the superconducting magnet 93, thereby forming a guiding force pointing towards the target track in the lateral direction of the maglev vehicle 9, providing the vehicle with lateral guiding force pointing towards the straight track or the side track after the turnout. Compared with traditional solutions that rely on large movements of mechanical switching components, this embodiment uses electromagnetic vector control to achieve line-changing guidance, which can reduce mechanical moving parts and improve response speed and control accuracy.

[0040] Furthermore, to determine the turning point of the maglev vehicle 9, this embodiment preferably includes a speed-measuring and positioning coil 12 on the turnout base 1. The speed-measuring and positioning coil 12 is electrically connected to the turnout control system 8 and provides position and speed information to the turnout control system 8 to determine the turning point. Preferably, the speed-measuring and positioning coil 12 comprises at least three segments, which are respectively located between the two rails of the turnout section 71 before the turnout, the straight track section 72 after the turnout, and the side track section 73 after the turnout in the turnout area. That is, one segment of the speed-measuring and positioning coil 12 is arranged between the two rails of the turnout section 71 before the turnout to detect the position and speed of the vehicle before entering the turnout area; the other two segments are arranged between the two rails of the straight track section 72 after the turnout and the side track section 73 after the turnout to detect the running status of the vehicle after entering the corresponding track. Therefore, the switch control system 8 can switch the current direction and / or magnitude of the straight coil 5 and the side coil 6 in a timely manner before the vehicle reaches the predetermined switch area based on the real-time position and speed information of the maglev vehicle 9, so that the vehicle can obtain lateral guiding force at the appropriate time, thereby improving the switch control accuracy and reliability.

[0041] In an alternative implementation, when the branch area running rail 7 is a planar support structure formed by integral casting, it is necessary to provide an installation position for installing the speed measuring and positioning coil 12.

[0042] Reference Figure 3 and Figure 7 When the maglev vehicle 9 passes the straight track after the turnout, the switch control system 8 controls the energizing state, current direction, and / or magnitude of the straight track coil 5, side track coil 6, and the straight track movable coil 41 and side track movable coil 42. This creates an attractive force between the straight track coil 5 and the straight track movable coil 41 and the superconducting magnet 93 on the maglev vehicle 9, while simultaneously creating a repulsive force between the side track coil 6 and the side track movable coil 42 and the superconducting magnet 93. This generates a resultant force in the lateral direction of the maglev vehicle 9, pointing towards the straight track after the turnout, causing the maglev vehicle 9 to deflect towards the straight track. As the maglev vehicle 9 moves towards the straight track, the guide wheel 92 gradually establishes a guiding engagement with the corresponding guide surface. The straight track guide surface 21 on the straight track slab 2 and the first guide surface 43 on the transition track slab 4 that cooperates with it apply a lateral force to the guide wheel 92 to constrain and correct the lateral position of the maglev vehicle 9. Meanwhile, the wheels 91 of the maglev vehicle 9 roll along the straight section 72 after the turnout corresponding to the turnout running track 7, and a corresponding frictional force is generated between the wheels 91 and the turnout running track 7. As a result, the lateral electromagnetic force exerted on the superconducting magnet 93 by the straight coil 5, the straight movable coil 41, the side coil 6, and the side movable coil 42, the lateral force between the straight guide surface 21 and the first guide surface 43 and the guide wheel 92, and the frictional force between the wheels 91 and the turnout running track 7 work together to form a force balance, allowing the maglev vehicle 9 to smoothly enter the straight section after the turnout.

[0043] Reference Figure 2 and Figure 8 When the maglev vehicle 9 passes the side track after the turnout, the switch control system 8 controls the energizing state and current direction and / or magnitude switching of the straight coil 5, side coil 6, and straight movable coil 41 and side movable coil 42. This creates an attractive force between the side coil 6 and side movable coil 42 and the superconducting magnet 93 on the maglev vehicle 9, while simultaneously creating a repulsive force between the straight coil 5 and straight movable coil 41 and the superconducting magnet 93. This generates a resultant force in the lateral direction of the maglev vehicle 9, pointing towards the side track after the turnout, causing the maglev vehicle 9 to deflect towards the side track. As the maglev vehicle 9 moves towards the side track, the guide wheel 92 gradually establishes a guiding engagement with the corresponding guide surface. The side guide surface 31 on the side track plate 3 and the second guide surface 44 on the transition track plate 4 that cooperates with it apply a lateral force to the guide wheel 92 to constrain and correct the lateral position of the maglev vehicle 9. Meanwhile, the running wheels 91 of the maglev vehicle 9 roll along the corresponding rear side track 73 of the turnout running rail 7, generating a corresponding frictional force between the running wheels 91 and the turnout running rail 7. Thus, the lateral electromagnetic force exerted on the superconducting magnet 93 by the side track coil 6, the side track movable coil 42, the straight track coil 5, and the straight track movable coil 41, the lateral force between the side track guide surface 31 and the second guide surface 44 and the guide wheel 92, and the frictional force between the running wheels 91 and the turnout running rail 7 work together to form a force balance, allowing the maglev vehicle 9 to smoothly enter the rear side track line.

[0044] It should be noted that this invention patent applies to low-speed switching of maglev trains, i.e., the working condition where the train relies on the running wheels for support, and cannot achieve levitation switching.

[0045] Furthermore, it should be noted that the high-speed maglev turnout in this application not only enables the maglev vehicle 9 to pass forward from the track before the turnout to the straight track or the side track after the turnout, but also enables the maglev vehicle 9 to pass in reverse from the straight track or the side track after the turnout to the track before the turnout. During reverse passage, the transition track slab 4 can also switch between straight track and side track coordination states to form track sections and guide sections adapted to the vehicle's reverse running path. Specifically, when the maglev vehicle 9 passes the turnout in reverse along the straight track after the turnout, the transition track slab 4 adjusts to the coordination state corresponding to the forward passage of the straight track; when the maglev vehicle 9 passes the turnout in reverse along the side track after the turnout, the transition track slab 4 adjusts to the coordination state corresponding to the forward passage of the side track. Since the running direction of the maglev vehicle 9 is opposite to that during forward passage, the adjustment direction of the transition track slab 4 around the rotation axis is also opposite to that during forward passage. In other words, during forward passage, the transition track 4 rotates in the first direction to form the track section corresponding to the target track. During reverse passage, the transition track 4 rotates in the second direction, opposite to the first direction, to achieve reverse introduction of the corresponding section of the same target track. Thus, regardless of whether the maglev vehicle 9 passes forward or backward, the transition track 4 can be set opposite to the straight track 2 or the side track 3 to jointly form the corresponding track section. At the same time, it works with the straight guide surface 21, the side guide surface 31, the first guide surface 43, and the second guide surface 44 to form a guiding relationship adapted to the running direction, thereby ensuring that the maglev vehicle 9 has good guiding continuity and smoothness when passing through the turnout in both directions.

[0046] The implementation principle of a high-speed maglev turnout with electromagnetic drive switching according to an embodiment of the present invention is as follows: When the maglev vehicle 9 approaches the turnout area along the track before the turnout, the speed measuring and positioning coil 12 of the track before the turnout 71 first detects the position and speed information of the maglev vehicle 9 and sends the corresponding information to the turnout control system 8. The turnout control system 8 outputs a turnout control signal according to the preset target track information and real-time position information, and drives the current switching unit to switch the direction and / or magnitude of the current of the straight coil 5 and the side coil 6. If the maglev vehicle 9 needs to pass through the straight track after the turnout, the transition track plate 4 switches to the straight track coordination state. At this time, the straight track movable coil 41 on the transition track plate 4 and the straight track coil 5 on the straight track plate 2 together form the electromagnetic drive section corresponding to the straight track after the turnout. The first guide surface 43 and the straight track guide surface 21 together form the guide transition boundary. The corresponding support path in the turnout running rail 7 provides continuous support for the running wheels 91 of the maglev vehicle 9. At this time, one side of the straight track coil 5 forms an electromagnetic force with the superconducting magnet 93 that is conducive to the vehicle maintaining or deflecting towards the straight track. Combined with the contact relationship between the guide wheel 92 and the guide surface, this allows the maglev vehicle 9 to smoothly pass through the straight track after the turnout. If the maglev vehicle 9 needs to pass through the side track after the turnout, the transition track plate 4 switches to the side track engagement state. The side track movable coil 42 and the side track coil 6 together form the electromagnetic drive section corresponding to the side track after the turnout. The second guide surface 44 and the side track guide surface 31 together form the guide transition boundary. The switch control system 8 then causes the coil on the corresponding side to form an electromagnetic force with the superconducting magnet 93 that is conducive to the vehicle deflecting towards the side track, thereby allowing the maglev vehicle 9 to enter the side track after the turnout. Throughout the entire process, except for the small-range rotation of the transition track plate 4, the turnout body does not need to undergo large-scale mechanical movements for track changing. Therefore, it can effectively simplify the structure, reduce construction and maintenance costs, and improve switch response efficiency.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high-speed maglev turnout with electromagnetic drive, used to realize track switching between the track before the turnout and the straight track and the side track after the turnout, characterized in that, Includes the turnout base and the components mounted on the turnout base: A straight-strand track plate, on which straight-strand coils are installed; A side track plate is disposed on one side of the straight track plate, and a side coil is disposed thereon; A transition track slab is provided between the straight track slab and the side track slab to form a track section for the maglev vehicle to transition from the line before the turnout to the straight track or the side track after the turnout. The branch section running rail is set between the straight track plate and the side track plate to form a supporting running surface for maglev vehicles to pass through the branch section; A turnout control system is used to perform vector control on the straight track coil and the side track coil to control the direction and / or magnitude of the linear motor normal force formed by the straight track coil and the side track coil on the on-board magnet of the maglev vehicle, so that the maglev vehicle obtains a lateral guiding force pointing towards the straight track or the side track after the turnout.

2. The high-speed maglev turnout with electromagnetic drive according to claim 1, characterized in that, The transition track plate can be switched between a straight strand engagement state and a side strand engagement state. A straight strand movable coil is provided on the side of the transition track plate near the straight strand track plate, and a side strand movable coil is provided on the side of the transition track plate near the side strand track plate. When the transition track plate is in the straight track engagement state, the straight track movable coil and the straight track coil cooperate to form the electromagnetic drive section corresponding to the straight track after the turnout; When the transition track plate is in the side strand engagement state, the side strand movable coil and the side strand coil cooperate to form the electromagnetic drive section corresponding to the side strand line after the turnout.

3. A high-speed maglev turnout with electromagnetic drive according to claim 2, characterized in that, The turnout base is provided with a rotating shaft, and the transition track plate rotates around the rotating shaft to switch between the straight track engagement state and the side track engagement state. When the transition track plate is in the straight track engagement state, the transition track plate and the straight track plate are arranged opposite to each other and together form the track section corresponding to the straight track after the turnout. When the transition track plate is in the side track engagement state, the transition track plate and the side track plate are arranged opposite to each other and together form the track section corresponding to the side track after the turnout.

4. A high-speed maglev turnout with electromagnetic drive according to claim 3, characterized in that, The straight track slab extends in a straight line along the direction of the line in front of the turnout, the side track slab extends in a curved direction along the direction of the side track behind the turnout, and the transition track slab has a gradually widening plate structure in the plane, which is narrower on the side closer to the line in front of the turnout and wider on the side farther away from the line in front of the turnout.

5. A high-speed maglev turnout with electromagnetic drive according to any one of claims 1-4, characterized in that, The straight track plate has a straight guide surface on the side near the side track plate, and the side track plate has a side guide surface on the side near the straight track plate. The transition track plate has a first guide surface on the side near the straight track plate and a second guide surface on the side near the side track plate. The straight guide surface, the side guide surface, the first guide surface, and the second guide surface are all used to cooperate with the guide wheels of the maglev vehicle. The turn control system controls the direction and / or magnitude of the linear motor normal force formed by the straight coil and the side coil, providing lateral guiding force in the corresponding direction to the maglev vehicle.

6. A high-speed maglev turnout with electromagnetic drive according to claim 5, characterized in that, When the transition track plate is in the straight track engagement state, the distance between the starting end of the first guide surface and the straight track guide surface is greater than the standard track gauge, and gradually returns to the standard track gauge along the extension direction. When the transition track plate is in the side strand engagement state, the distance between the starting end of the second guide surface and the side strand guide surface is greater than the standard track gauge, and gradually returns to the standard track gauge along the extension direction.

7. A high-speed maglev turnout with electromagnetic drive according to claim 1, characterized in that, The turn control system includes a controller and a vector control unit. The controller is used to output a turn control signal, and the vector control unit is used to perform vector control on the straight coil and the side coil according to the turn control signal, so as to control the direction and / or magnitude of the linear motor normal force formed by the straight coil and the side coil on the on-board magnet of the maglev vehicle.

8. A high-speed maglev turnout with electromagnetic drive according to claim 1, characterized in that, A speed measuring and positioning coil is installed on the turnout base. The speed measuring and positioning coil is electrically connected to the turnout control system. The speed measuring and positioning coil is used to provide the turnout control system with the position and speed information of the maglev vehicle to determine the turnout time and the position of the on-board magnet, and accordingly control the direction and / or magnitude of the linear motor normal force formed by the straight coil and the side coil on the on-board magnet.

9. A high-speed maglev turnout with electromagnetic drive according to claim 8, characterized in that, The running track in the branch area includes a front section, a straight section behind the branch, and a side section behind the branch. The front section, the straight section behind the branch, and the side section behind the branch are all double-track structures. The running tracks in the branch area intersect in the middle of the branch area to form an X-shaped intersection section, and then separate after the X-shaped intersection section to form a straight support path behind the branch and a side support path behind the branch.

10. A high-speed maglev turnout with electromagnetic drive according to claim 8 or 9, characterized in that, The speed measuring and positioning coil comprises at least three sections, which are respectively located between the two rails of the front section, the straight section behind the turnout, and the side section behind the turnout of the turnout running rail in the turnout area.

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