Pinning magnetic levitation magnetic track driving device, traffic structure and control method

Abstract

The invention provides a pinning magnetic levitation magnetic track driving device, a traffic structure and a control method, and relates to the technical field of magnetic levitation traffic, the driving device comprises a permanent magnet, and the permanent magnet is laid in the extending direction of a track; the conductor piece is arranged at the top of the permanent magnet, and the extension direction of the conductor piece is parallel to the extension direction of the permanent magnet; and the power supply assembly is suitable for being fixedly connected with a vehicle body, and the power supply assembly is in sliding connection with the conductor piece and is conducted with the conductor piece. The magnetic field of the permanent magnet is utilized, and the power supply assembly and the conductor piece are slidably connected and conducted, so that the power supply assembly can move in the extending direction of the track, the vehicle body can move along the track, and compared with a short-stator linear induction motor and a long-stator linear synchronous motor, the motor is low in cost and high in driving efficiency.

Description

Technical Field

[0001] This invention relates to the field of maglev transportation technology, and more specifically, to a maglev track drive device, a traffic structure, and a control method. Background Technology

[0002] As the only available traction method for high-temperature superconducting pinned maglev trains, linear AC motors mainly include short-stator linear induction motors and long-stator linear synchronous motors. However, both face inherent limitations: short-stator linear induction motors have low efficiency and limited thrust; while long-stator linear synchronous motors, although having superior performance, rely on expensive facilities such as continuously laying three-phase windings on the track, resulting in a unit kilometer cost of up to 80 million to 100 million RMB, accounting for about one-third of the total cost of the entire maglev system. Summary of the Invention

[0003] The purpose of this invention is to provide a bolted magnetic levitation track drive device, a traffic structure, and a control method to improve the aforementioned problems. To achieve the above objective, the technical solution adopted by this invention is as follows:

[0004] In a first aspect, this application provides a nailed magnetic levitation track drive device, comprising: a permanent magnet laid along the extension direction of the track; a conductor disposed on the top of the permanent magnet, and the extension direction of the conductor is parallel to the extension direction of the permanent magnet; and a power supply assembly adapted to be fixedly connected to the vehicle body, and the power supply assembly is slidably connected to and conducting with the conductor.

[0005] Secondly, this application provides a spiked maglev rail transit structure, comprising: a rail drive device, wherein the rail drive device is configured as the spiked maglev rail drive device described in the first aspect; and a vehicle body, wherein the vehicle body is fixedly connected to the power supply assembly.

[0006] Thirdly, this application provides a control method for a magnetic track drive device, the control method being suitable for controlling the pinned magnetic levitation track drive device described in the first aspect, comprising: acquiring vehicle movement commands; controlling the power supply component to operate according to the vehicle movement commands, thereby controlling the on / off state, current output, and current direction of the power supply component.

[0007] The beneficial effects of this invention are as follows:

[0008] This invention utilizes the magnetic field of a permanent magnet and makes the power supply component slide and conduct to the conductor, allowing the power supply component to move along the extension direction of the track, thereby enabling the vehicle body to move along the track. Compared with short stator linear induction motors and long stator linear synchronous motors, this application has lower cost and higher driving efficiency.

[0009] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing embodiments of the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the written description, claims, and drawings. Attached Figure Description

[0010] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the structure of the nailed magnetic levitation track drive device of the present invention;

[0012] Figure 2 This is a cross-sectional view of the magnetic levitation track drive device of the present invention;

[0013] Figure 3 This is a side view of the magnetic levitation track drive device of the present invention.

[0014] The markings in the diagram are: 1. Vehicle body; 2. Track base; 10. Permanent magnet; 20. Conductor; 21. Horizontal plate; 22. Vertical plate; 31. On-board power supply; 32. Elastic conductive component; 321. Elastic support beam; 322. First conductive component; 323. Current collector shoe; 33. Second conductive component. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present 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 the present invention. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0016] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this invention, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0017] Example 1:

[0018] like Figures 1-3 As shown, this embodiment provides a nailed magnetic levitation track drive device, including: a permanent magnet 10, a conductor 20 and a power supply assembly. The permanent magnet 10 is laid along the extension direction of the track, the conductor 20 is disposed on the top of the permanent magnet 10, and the extension direction of the conductor 20 is parallel to the extension direction of the permanent magnet 10. The power supply assembly is adapted to be fixedly connected to the vehicle body 1, and the power supply assembly is slidably connected to and conducts electricity with the conductor 20.

[0019] In some embodiments, a track base 2 is provided along the track extension direction, and a permanent magnet 10 is laid along the track extension direction and disposed on the track base 2. The permanent magnet 10 is suitable for providing a stable permanent magnet magnetic field for the entire drive device. That is, in the application of high-temperature superconducting maglev train, the permanent magnet 10 is not only used to generate the magnetic field required for levitation and guidance, but also to provide the necessary magnetic field environment for the propulsion system. A conductor 20 is provided on the top of the permanent magnet 10. The extension direction of the conductor 20 is parallel to the extension direction of the permanent magnet 10, that is, the extension direction of the conductor 20 is parallel to the extension direction of the track base 2. A power supply component is slidably connected to the top of the conductor 20, and the power supply component is electrically connected to the conductor 20 while being slidably connected to the conductor 20. That is, the positive and negative poles of the power supply component are electrically connected to the conductor 20, respectively. The power supply component is fixedly connected to the vehicle body 1.

[0020] It is understandable that the direction of the current is: positive terminal of the power supply component → conductor 20 → negative terminal of the power supply component. When the positive and negative terminals of the power supply component are electrically connected to the conductor 20, the power supply component is in the magnetic field generated by the permanent magnet 10. According to Ampere's law, the current-carrying conductor (power supply component) will be subjected to a force in the magnetic field. The direction of this force is determined by the direction of the current and the direction of the magnetic field, so as to drive the power supply component to move along the extension direction of the track.

[0021] Specifically, an energized coil generates a magnetic force in a magnetic field environment. However, the integral of the force on an energized closed coil in a magnetic field is zero, meaning the coil as a whole experiences no force. This does not mean that each segment of the coil experiences no force; it simply means that the force on each segment of the energized closed coil is zero after integration. In this application, the power supply component and the conductor 20 are constructed together as a structure similar to an "energized closed coil." As a result, both the power supply component and the conductor 20 generate forces, and the forces of the power supply component and the conductor 20 are in opposite directions. Since the conductor 20 is fixed to the permanent magnet 10 and / or the track base 2, and the power supply component can slide relative to the conductor 20, under the action of the aforementioned forces, the power supply component can move relative to the conductor 20 in the extension direction of the track base 2. Furthermore, since the power supply component is fixedly connected to the vehicle body 1, under the action of the aforementioned forces, the vehicle body 1 can move along the extension direction of the track.

[0022] It is worth mentioning that by controlling the output of the power supply component, the magnitude and direction of the current can be adjusted, thereby controlling the magnitude and direction of the propulsion force, and thus controlling the direction and speed of the vehicle body 1.

[0023] Understandably, existing maglev train propulsion systems include short-stator linear induction motors and long-stator linear synchronous motors.

[0024] Specifically, compared with existing short-stator linear induction motors, the drive device proposed in this invention has the following advantages:

[0025] 1. The induction drive scheme adopted by short-stator linear induction motors results in huge eddy current losses. Combined with the air gap requirements of maglev trains, the drive efficiency of short-stator linear induction motors generally does not exceed 60%. Furthermore, short-stator linear induction motors rely on stator current excitation, leading to a low power factor and increased copper losses. In contrast, the drive device proposed in this invention has only a small amount of copper loss, significantly improving drive efficiency.

[0026] 2. The short stator linear induction motor requires the motor stator to be installed on the vehicle body 11, which mainly includes silicon steel sheets, three-phase windings and corresponding inverter and frequency modulation equipment. However, the drive device proposed in this invention only requires the power supply components to be fixed on the vehicle body 1, which significantly reduces the cost of the drive device on the vehicle body 1.

[0027] 3. In short-stator linear induction motors, there is a normal force between the stator and the mover. This normal force can only be eliminated at a specific slip frequency, and it is difficult to eliminate the interference of the normal force under most operating conditions. However, the electromagnetic force on the power supply component of the drive device proposed in this invention is along the longitudinal direction of the track, with no directional component, and therefore does not interfere with the suspension system.

[0028] Specifically, compared with existing long-stator linear synchronous motors, the drive device proposed in this invention has the following advantages:

[0029] 1. On the track side, the drive device of this application eliminates the need for a motor stator and corresponding inverter and frequency modulation device laid along the track, and only requires a conductor 20 to be set on the top of the permanent magnet 10; on the vehicle body 11 side, the drive device of this application eliminates the expensive permanent magnet 10, that is, the drive device of this application only needs to fix the power supply component to the vehicle body 1, and make the power supply component slide connected to the conductor 20 and conduct electricity.

[0030] 2. In a long-stator linear synchronous motor, there is a normal force between the stator and the rotor. Although this can be offset by using a coreless motor stator design with a specific power angle, it cannot eliminate the interference of the normal force in most operating conditions. However, the electromagnetic force on the power supply component of the drive device proposed in this invention is along the longitudinal direction of the track and has no axial component, thus having no interference with the suspension system.

[0031] 3. Although the long stator linear synchronous motor scheme can reduce the required stator length through segmented power supply, it cannot completely eliminate the ineffective power supply area, and the actual energized stator length is still relatively large. However, the drive device proposed in this invention forms a closed loop only in the power supply component connected to the vehicle body 1 and the conductor portion directly opposite the power supply component, completely eliminating the ineffective power supply area.

[0032] 4. Traditional long-stator linear synchronous motor solutions require millimeter or even sub-millimeter precision to obtain train position information to ensure continuous traction. Furthermore, when multiple trains operate on the same stator power supply section, it is impossible to perform individual speed control on each train. In contrast, the drive device proposed in this invention can achieve drive without precisely obtaining the position of the car body 1, significantly reducing the requirements for the car body 1 positioning device.

[0033] 5. An integrated design of the levitation guidance and drive system for high-temperature superconducting maglev trains has been achieved, simplifying the system structure and improving the utilization rate of permanent magnet tracks.

[0034] According to the present invention, the magnetic levitation track drive device utilizes the magnetic field of the permanent magnet 10 and makes the power supply component slide connected and conducts through the conductor 20, so that the power supply component can move along the extension direction of the track, thereby realizing the movement of the vehicle body 1 along the track. Compared with short stator linear induction motors and long stator linear synchronous motors, the present application has low cost and high drive efficiency.

[0035] According to some embodiments of the present invention, the power supply assembly includes a vehicle power supply 31, the positive and negative terminals of the vehicle power supply 31 are respectively connected to elastic conductive elements 32, and the two elastic conductive elements 32 are respectively slidably connected to and conducting with the conductor 20.

[0036] In some embodiments, the direction of the current is: positive terminal of vehicle power supply 31 → one of the elastic conductive elements 32 → conductor 20 → another elastic conductive element 32 → negative terminal of vehicle power supply 31. The two elastic conductive elements 32 are slidably connected to the conductor 20, and the elastic conductive elements 32 can maintain electrical conduction with the conductor 20 when sliding relative to the conductor 20.

[0037] It should be noted that when the vehicle power supply 31 vibrates relative to the conductor 20, the elastic conductive element 32 can always maintain a stable connection and electrical conduction with the conductor 20, ensuring the continuity and stability of current transmission, thereby ensuring that the vehicle body 1 always has a stable driving force when vibrating relative to the track, and thus ensuring that the vehicle body 1 can move stably along the extension direction of the track.

[0038] Therefore, the setting of the elastic conductive element 32 enables the vehicle power supply 31 to adapt to track conditions and vehicle body 1 movement state under different working conditions. Specifically, the vehicle power supply 31 is fixedly connected to the vehicle body 1, and the elastic conductive element 32 can automatically compensate for the changes in contact gap caused by factors such as uneven track and vehicle body 1 offset, ensuring that the vehicle body 1 can work normally in various complex environments, thus broadening the application range of the drive device.

[0039] According to some embodiments of the present invention, the elastic conductive element 32 includes an elastic support beam 321. The top of the elastic support beam 321 is connected to and conducts through the positive or negative terminal of the vehicle power supply 31, and the bottom of the elastic support beam 321 is slidably connected to and conducts through the conductor plate. The top of the elastic support beam 321 can selectively move toward or away from the conductor plate. The elastic conductive element 32 also includes a first conductive element 322 and a current collector shoe 323. The first conductive element 322 is rotatably disposed on the top of the elastic support beam 321 and is adapted to be connected to and conduct through the positive or negative terminal of the vehicle power supply 31. The current collector shoe 323 is rotatably disposed on the bottom of the elastic support beam 321 and is adapted to be slidably connected to and conduct through the conductor 20.

[0040] In some embodiments, when the drive device is working, the direction of the current is: positive terminal of vehicle power supply 31 → first conductive element 322 of one of the elastic conductive elements 32 → elastic support beam 321 of one of the elastic conductive elements 32 → current collector shoe 323 of one of the elastic conductive elements 32 → conductor 20 → current collector shoe 323 of another elastic conductive element 32 → elastic support beam 321 of another elastic conductive element 32 → first conductive element 322 of another elastic conductive element 32 → negative terminal of vehicle power supply 31.

[0041] Understandably, during the operation of the vehicle body 1, the distance between the on-board power supply 31 and the conductor 20 may change due to factors such as unevenness of the track, vibration of the vehicle body 1, or installation errors. When the on-board power supply 31 moves towards the conductor 20, the elastic support beam 321 will rotate relative to the conductor 20 and the on-board power supply 31 (the rotation of the elastic support beam 321 reduces the angle between the elastic support beam 321 and the horizontal direction), ensuring that the current collector shoe 323 is always pressed firmly against the conductor 20, maintaining good contact pressure. Conversely, when the on-board power supply 31 moves away from the conductor 20, the elastic support beam 321 will also rotate relative to the conductor 20 and the on-board power supply 31 (the rotation of the elastic support beam 321 increases the angle between the elastic support beam 321 and the horizontal direction), still ensuring contact between the current collector shoe 323 and the conductor 20, preventing poor contact due to changes in distance.

[0042] According to some embodiments of the present invention, two elastic conductive elements 32 are respectively located on both sides of the vehicle power supply 31 in the width direction, and the extension direction of the two elastic conductive elements 32 is parallel to the height direction of the track.

[0043] In some embodiments, the positive and negative terminals of the vehicle power supply 31 are respectively disposed on both sides of the width direction of the vehicle power supply 31, and the width direction of the vehicle power supply 31 is parallel to the width direction of the track base 2. Two elastic conductive elements 32 are respectively disposed on both sides of the width direction of the vehicle power supply 31, and the two elastic conductive elements 32 are electrically connected to the positive and negative terminals of the vehicle power supply 31 respectively. Thus, the above arrangement can facilitate the connection between the vehicle power supply 31 and the two elastic conductive elements 32, while reducing the material usage of the elastic conductive elements 32, reducing the production cost of the drive device, and making the space occupied by the drive device smaller.

[0044] It is worth mentioning that the vehicle power supply 31 is supported on the conductor 20 by two elastic conductive elements 32. The two elastic conductive elements 32 are respectively arranged on both sides of the width direction of the vehicle power supply 31, so that both sides of the width direction of the vehicle power supply 31 can be supported, thereby making the support stability of the vehicle power supply 31 better.

[0045] According to some embodiments of the present invention, the power supply assembly further includes a second conductive element 33, at least a portion of which extends in the width direction of the track. One end of the second conductive element 33 is adapted to be connected to the positive or negative terminal of the on-board power supply 31, and the other end of the second conductive element 33 is adapted to be connected to an elastic conductive element 32. The projections of the two elastic conductive elements 32 in the track height direction are respectively located on both sides in the width direction of the conductor 20.

[0046] It is understood that at least a portion of the second conductive member 33 extends in the width direction of the track, that is, one end of the second conductive member 33 is connected to the vehicle power supply 31, and at least a portion of the second conductive member 33 extends away from the vehicle power supply 31 in the width direction of the vehicle power supply 31 and is connected to the elastic conductive member 32. Thus, the above arrangement allows for a larger distance between the two elastic conductive members 32, thereby improving the support effect on the vehicle power supply 31.

[0047] In some embodiments, the second conductive element 33 is connected and electrically connected to the first conductive element 322, the first conductive element 322 is rotatably connected and electrically connected to the elastic support beam 321, the elastic support beam 321 is rotatably connected and electrically connected to the current collector shoe 323, and the current collector shoe 323 is slidably connected and electrically connected to the conductor element 20.

[0048] According to some embodiments of the present invention, the conductor 20 includes a horizontal plate 21, and vertical plates 22 are respectively provided on both sides of the horizontal plate 21 in the width direction. The bottoms of the two vertical plates 22 are respectively adapted to be connected to the track base 2. The horizontal plate 21, the track base 2, and the two vertical plates 22 together define a receiving cavity suitable for receiving the permanent magnet 10.

[0049] In some embodiments, the conductor 20 may be integrally formed, or it may be formed by welding or connecting a horizontal plate 21 and two vertical plates 22, without limitation. The bottoms of the two vertical plates 22 are respectively connected to the track base 2, thereby defining a receiving cavity between the conductor 20 and the track base 2. The permanent magnet 10 is received in the receiving cavity, which protects the permanent magnet 10 and extends its service life.

[0050] According to some embodiments of the present invention, the vertical component integral of the magnetic flux of the composite magnetic field of the permanent magnet 10 on the power supply component is w, which satisfies: |w| > 0, where |w| is the absolute value of the vertical component integral w of the magnetic flux of the composite magnetic field of the permanent magnet 10 on the power supply component.

[0051] In some embodiments, the permanent magnet 10 has a composite magnetic field, and the absolute value of the vertical component integral of the composite magnetic field of the permanent magnet 10 on the power supply component is greater than zero, thereby ensuring that the power supply component is subjected to an effective magnetic force when it is connected to the conductor 20, thereby generating a linear propulsion force to enable the power supply component to move along the extension direction of the track.

[0052] In other embodiments, when the power supply component stops supplying power and the vehicle body 1 is still moving, the power supply component cuts the composite magnetic field of the permanent magnet 10 and generates an electromotive force, thereby generating a current. The current can be stored when it flows through the power supply component, thereby realizing the conversion of kinetic energy into electrical energy, and thus realizing regenerative braking.

[0053] Example 2:

[0054] This embodiment provides a spiked maglev rail transit structure, including: a rail drive device, wherein the rail drive device is configured as the spiked maglev rail drive device described in Embodiment 1; and a vehicle body 1, wherein the vehicle body 1 is fixedly connected to the power supply assembly. Because the spiked maglev rail transit structure of this invention incorporates the drive device described in any of the above embodiments, the structure is low in cost and has high driving efficiency.

[0055] Example 3:

[0056] This embodiment provides a control method for a magnetic track drive device. The control method is suitable for controlling the pinned magnetic levitation track drive device described in Embodiment 1, including:

[0057] Obtain the action command for vehicle 1.

[0058] In some embodiments, the vehicle body 1 movement commands include various commands such as vehicle start, vehicle stop, vehicle acceleration, and vehicle deceleration.

[0059] The power supply components are controlled according to the movement commands of the vehicle body 1, thereby controlling the on / off state, current output, and current direction of the power supply components.

[0060] After the power supply component receives the movement command of the vehicle body 1, whether the power supply component is turned on or off can determine whether the vehicle body 1 starts or stops running; of course, by controlling the output of the power supply component, the current magnitude can be adjusted to control the propulsion force of the drive device, thereby affecting the speed and acceleration of the vehicle body 1; and by controlling the change of the current direction of the power supply component, the direction of the force generated by the interaction between the magnetic field and the current can be changed, thereby achieving the deceleration of the vehicle body 1.

[0061] It is worth mentioning that when the vehicle is started, the direction of the vehicle's movement can be controlled by controlling the direction of the current in the power supply components.

[0062] Understandably, when a vehicle start command is received, the control system sends a start signal to the power supply component, causing the power supply component to start working. At this time, the power supply component can slide relative to the conductor 20, thereby realizing the movement of the vehicle body 1. When a vehicle stop command is received, the control system cuts off the power supply to the power supply component, and the drive device stops running.

[0063] Based on the speed and acceleration requirements (vehicle acceleration and deceleration commands) in the vehicle 1's movement instructions, the control system adjusts the current output of the power supply components. For example, when vehicle 1 needs to accelerate, the control system increases the current output of the power supply components, increasing the propulsive force generated by the interaction between the magnetic field and the current in the drive unit, thereby accelerating vehicle 1; conversely, when vehicle 1 needs to decelerate, the current output decreases. Of course, when vehicle 1 needs to decelerate, by controlling the direction of the current in the power supply components to change, vehicle 1 can have an acceleration opposite to its direction of travel, thereby increasing the acceleration of vehicle 1 during deceleration and thus improving the deceleration effect.

[0064] When it is necessary to change the direction of travel of vehicle 1, the control system changes the direction of the current output by the power supply component. The change in the direction of the current will change the direction of the force generated by the interaction between the magnetic field and the current, thereby realizing the conversion of the direction of movement of vehicle 1.

[0065] Understandably, after the control system receives the vehicle start command, it controls the power supply component to start. Subsequently, the vehicle begins to accelerate under the action of the power supply component. When the vehicle's speed reaches the preset value, the control system controls the current output of the power supply component to reduce the vehicle's acceleration to zero. At this time, the vehicle can travel at a constant speed. When the vehicle needs to decelerate, the control system controls the current output of the power supply component to reduce or causes the current of the power supply component to change direction, thereby achieving vehicle deceleration.

[0066] Specifically, after receiving the vehicle start command, the control system activates the power supply component to close the power supply circuit, energizing the drive unit. Subsequently, the control system energizes the power supply component with the minimum safe current (10% of rated current). After confirming that the drive unit is functioning normally, the current is gradually increased to the target value at a preset rate (0.5A / ms-0.8A / ms) to avoid mechanical shock. Alternatively, the control system can calculate the required propulsion force based on the vehicle's load and dynamically adjust the current to a stable operating value.

[0067] When the control system receives an acceleration command, it calculates the difference Δv between the current speed and the target speed, and then increases the current in stages according to the difference Δv (5% of the rated current per second when Δv < 2 m / s; 10% of the rated current per second when Δv ≥ 2 m / s). Of course, the control system can also monitor the temperature of the drive unit in real time and limit the current increase when the temperature of the drive unit exceeds a preset value.

[0068] When the control system receives a deceleration command, it prioritizes changing the current direction of the power supply component to achieve rapid braking. This change in current direction generates reverse thrust. The preset duration of this current direction change is t1. After t1, the control system switches the power supply component to a low forward current (0% of rated current) for gradual stopping, preventing the vehicle body from tilting forward during a sudden stop. Alternatively, if only slowing is required, the forward current is reduced proportionally (5%) to the target value.

[0069] When the control system receives a stop command, it controls the power supply component to gradually reduce the output current to the minimum value (10% of the rated current) for 0.3 seconds to consume the residual kinetic energy. Then, the control system cuts off the power supply circuit of the power supply component and monitors whether the drive device has completely stopped (through feedback from the position sensor).

[0070] According to the control method for the drive device of the present invention, after obtaining the action command of the vehicle body 1, the control system only needs to control the on / off of the power supply component, the current output, and the current direction to realize the start, stop, acceleration, and deceleration of the vehicle body 1. The control method of the drive system of the vehicle body 1 is simple and reliable, which simplifies the control logic of the drive system of the vehicle body 1, thereby simplifying the cost of the drive system of the vehicle body 1, while improving the working stability and reliability of the drive system of the vehicle body 1.

[0071] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0072] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A pinned magnetic floating track drive, characterized in that Include: Permanent magnet (10), the permanent magnet (10) is laid along the extension direction of the track; Conductor (20), the conductor (20) is arranged on the top of the permanent magnet (10), and the extension direction of the conductor (20) is parallel to the extension direction of the permanent magnet (10); Power supply assembly, the power supply assembly is adapted to be fixedly connected with the vehicle body (1), and the power supply assembly is in sliding connection and conduction with the conductor (20).

2. The pinned magnetic floating track drive of claim 1, wherein, The power supply assembly includes a vehicle-mounted power supply (31), and the positive and negative electrodes of the vehicle-mounted power supply (31) are respectively connected with elastic conductive pieces (32), and the two elastic conductive pieces (32) are respectively in sliding connection and conduction with the conductor (20).

3. The pinned magnetic floating track drive of claim 2, wherein, The elastic conductive piece (32) includes an elastic support beam (321), the top of the elastic support beam (321) is connected and conducted with the positive or negative electrode of the vehicle-mounted power supply (31), the bottom of the elastic support beam (321) is in sliding connection and conduction with the conductor plate, and the top of the elastic support beam (321) can be selectively moved towards or away from the conductor plate.

4. The pinned magnetic floating track drive of claim 3, wherein, The elastic conductive piece (32) further includes a first conductive piece (322) and a current collecting shoe (323), the first conductive piece (322) is rotatably arranged on the top of the elastic support beam (321), and the first conductive piece (322) is adapted to be connected and conducted with the positive or negative electrode of the vehicle-mounted power supply (31), the current collecting shoe (323) is rotatably arranged on the bottom of the elastic support beam (321), and the current collecting shoe (323) is adapted to be in sliding connection and conduction with the conductor (20).

5. The pinned magnetic floating track drive of claim 2, wherein, The two elastic conductive pieces (32) are respectively located on both sides of the vehicle-mounted power supply (31) in the width direction, and the extension direction of the two elastic conductive pieces (32) is parallel to the height direction of the track.

6. The pinned magnetic floating track drive of claim 5, wherein, The power supply assembly further includes a second conductive piece (33), at least part of the second conductive piece (33) extends in the width direction of the track, one end of the second conductive piece (33) is adapted to be connected with the positive or negative electrode of the vehicle-mounted power supply (31), and the other end of the second conductive piece (33) is adapted to be connected with the elastic conductive piece (32), and the projections of the two elastic conductive pieces (32) in the track height direction are respectively located on both sides of the conductor (20) in the width direction.

7. The pinned magnetic floating track drive of claim 1, wherein, The conductor (20) includes a horizontal plate (21), vertical plates (22) are respectively arranged on both sides of the horizontal plate (21) in the width direction, the bottoms of the two vertical plates (22) are respectively adapted to be connected with the track base (2), and the horizontal plate (21), the track base (2) and the two vertical plates (22) jointly define a receiving cavity adapted to receive the permanent magnet (10).

8. The pinned magnetic floating track drive of claim 1, wherein, The vertical component integral of the magnetic flux of the resultant magnetic field of the permanent magnet (10) on the power supply assembly is w, and satisfies: |w|>0.

9. A pinned magnetic levitation rail transport structure, characterized by, Include: Magnetic track driving device, the magnetic track driving device is configured as the pinning magnetic levitation magnetic track driving device in any one of claims 1-8; Vehicle body (1), the vehicle body (1) is fixedly connected with the power supply assembly.

10. A control method for a magnetic track drive, the control method being adapted to control a pinned magnetic floating magnetic track drive according to any one of claims 1 to 8, characterized in that Include: Obtain the action instruction of the vehicle body (1); The power supply assembly is controlled according to the action instruction of the vehicle body (1), so as to control the on-off, current output and current direction of the power supply assembly.

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