CN114954026A

CN114954026A - Suspension type permanent magnet electric maglev train system

Info

Publication number: CN114954026A
Application number: CN202210642049.1A
Authority: CN
Inventors: 胡海林; 杨杰; 杨斌; 丰富; 张悦
Original assignee: Jiangxi University of Science and Technology
Current assignee: Jiangxi University of Science and Technology
Priority date: 2022-06-08
Filing date: 2022-06-08
Publication date: 2022-08-30

Abstract

The invention particularly discloses a suspension type permanent magnet electric maglev train system which comprises a suspension beam, an inverted U-shaped holding rail and a bogie, wherein the bogie comprises a stand column, an upper framework and a lower framework, the inner wall of the inverted U-shaped holding rail is sequentially and symmetrically provided with a suspension rail, a power supply rail, a guide plate and a holding arm from top to bottom, current collectors are arranged on the side walls of the left side and the right side of the stand column, a suspension permanent magnet and a hydraulic supporting wheel are arranged on the lower side of the upper framework, a suspension induction plate and a supporting wheel rail are arranged on the upper side of the suspension rail, a motor rotor and a suspension rod connecting buckle are fixedly arranged on the lower side of the lower framework, a suspension rod is arranged at the lower end of the suspension rod connecting buckle, a motor induction plate is arranged on the upper side of one end, far away from the inverted U-shaped holding rail, of the holding arm, a gap is arranged between the motor induction plate and the motor rotor, and guide electromagnets are arranged at the end parts of the left end and the right end of the lower framework. The invention realizes the suspension, guidance and traction of the permanent magnet electric magnetic suspension train and has the characteristics of low cost, small occupied area, strong climbing capability and strong terrain adaptability.

Description

Suspension type permanent magnet electric maglev train system

Technical Field

The invention relates to the technical field of magnetic suspension, in particular to a suspension type permanent magnet electric magnetic suspension train system.

Background

The magnetic levitation technology is most widely applied to magnetic levitation trains, and the magnetic levitation trains are considered as the development direction of novel transportation tools in the 21 st century due to the advantages of high speed, strong climbing capability, low noise, economy, environmental protection and the like. The magnetic suspension train is divided into three types according to a suspension mode: electromagnetic levitation, electrodynamic levitation and permanent magnetic levitation. Electromagnetic levitation (EMS for short) is a suction levitation system, and levitation is realized by generating suction force through a vehicle-mounted normally conductive electromagnet and a ferromagnetic track on a guide rail, an EMS train cannot realize self-stabilization levitation, and the magnitude and direction of levitation force must be adjusted by adjusting exciting current in the electromagnet, so that stable levitation is realized. Currently, EMS is the most widely used magnetic levitation system, such as the germany TR series magnetic levitation train and the shanghai magnetic levitation train. Electro Dynamic Suspension (EDS) is a repulsive suspension system. When the train moves, the vehicle-mounted permanent magnet generates a changing electromagnetic field, eddy current is generated in the metal conductor on the track, so that an eddy current magnetic field is generated, the direction of the eddy current magnetic field is opposite to that of the original electromagnetic field, and repulsive force is generated to enable the train to suspend. The EDS type train suspension force is generated by relative motion, the buoyancy is reduced at low speed, the static suspension cannot be realized, and the suspension can be realized only at a certain speed. The suspension mode is derived from electromagnetic repulsion force, self-stabilization can be realized in the suspension direction, and active control is not needed. A typical example of the magnetic levitation train is the japanese MLX series. Permanent Magnet Suspension (PMS) also belongs to a repulsion suspension system. The permanent magnets can be in suspension operation by being repelled from the electromagnetic track and kept in the center line of the notch, and in any case, the vehicle body and the track are not in contact. The permanent magnetic suspension is published, and the traffic application in the field of magnetic suspension is enriched, such as China series light-weight suspended rail magnetic suspension, MAS magnetic suspension, Israel Sky Tran system and the like.

Different from the traditional electromagnetic maglev train, the suspension type maglev train system provided by the invention provides a suspension force by generating an eddy magnetic field through the relative motion of the vehicle-mounted permanent magnet and the metal conductor, and provides guidance through an electromagnet magnetic field and a metal conductor induced magnetic field.

Disclosure of Invention

The invention aims to provide a suspension type permanent magnet electric maglev train system, which realizes the suspension of a maglev train through a suspension permanent magnet and a metal conductor generating eddy current, realizes the guidance of the maglev train by utilizing the interaction of a guiding electromagnet and the metal conductor to generate lateral force, and realizes the traction of the maglev train through a motor induction plate and a motor rotor which are arranged on a holding arm and a bogie, and has the characteristics of low construction cost, small floor area, strong climbing capability and strong terrain adaptability.

The invention provides a suspension type permanent magnet electric maglev train system, which comprises a suspension beam, an inverted U-shaped holding rail and a bogie, wherein the bogie comprises an upright post, an upper framework and a lower framework which are positioned at the upper end and the lower end of the upright post and are arranged in parallel, the upper framework and the lower framework are both in a horizontal I shape, the bogie is arranged in the inverted U-shaped holding rail fixedly arranged below the suspension beam, suspension rails, power supply rails, guide plates and holding arms which are positioned at the left side and the right side of the upright post are sequentially and symmetrically arranged on the inner wall of the inverted U-shaped holding rail from top to bottom, the suspension rails, the guide plates and the holding arms are positioned between the upper framework and the lower framework, current collectors matched and corresponding to the power supply rails are respectively arranged on the left side wall and the right side wall of the upright post, suspension permanent magnets and hydraulic support wheels are respectively arranged on the left side lower surface of the upper framework and the right side surface of the upper framework, suspension induction plates matched and corresponding to the suspension permanent magnets and support wheel rails matched and corresponding to the hydraulic support wheels are respectively arranged on the upper side surface of the suspension rails, the left end downside of framework and the right-hand member downside of framework all fixedly are equipped with motor rotor down, the middle part downside of framework is equipped with and is located two jibs that embrace between the arm and connect the knot down, the jib connects the lower extreme of detaining to be equipped with and is used for the jib of being connected bogie and maglev train railway carriage or compartment, the one end of each armful arm all embraces the perpendicular fixed connection of the corresponding lower extreme tip of rail with the type of falling U, the side all is equipped with the motor tablet that matches with motor rotor on the other end of each armful arm, and be equipped with the clearance between motor tablet and the motor rotor, the left end tip of framework and the right-hand member tip of framework down all are equipped with the direction electro-magnet that matches the correspondence with the tablet so that realize maglev train's direction.

Preferably, a top beam is arranged between the suspension beam and the inverted U-shaped holding rail, and the inverted U-shaped holding rail is fixed on the suspension beam through the top beam.

Preferably, still include the positioning system that tests the speed, the positioning system that tests the speed includes radar, electronic tags reader and a plurality of electronic tags, and the framework upside is located to the radar, and the electronic tags reader is located the middle part of framework and is gone up the side, and the top inner wall of rail is embraced to the type of falling U and is corresponded with the electronic tags reader matching is located to a plurality of electronic tags interval. .

Preferably, the brake caliper is arranged at the left end part of the lower framework or/and the right end part of the lower framework, and the brake rail is arranged on the inner wall of the inverted U-shaped holding rail and corresponds to the brake caliper in a matching mode.

Preferably, still include wheel rail and limit for height guide rail, limit for height guide rail locates the left end of last framework and goes up the side on the side or/and the right-hand member of last framework, and the wheel rail is located and is located on the top inner wall of the rail is embraced to the type of falling U and correspond with the matching of limit for height guide rail.

Preferably, the gap sensor is fixedly arranged at one end of the guide electromagnet far away from the lower framework and used for detecting the gap between the guide plate and the guide electromagnet.

Preferably, go up the framework including horizontal parallel arrangement's first horizontal pole and second horizontal pole and vertically set up the first vertical pole that is used for connecting first horizontal pole and second horizontal pole, the suspension permanent magnet is including locating first suspension permanent magnet and the second suspension permanent magnet of both ends downside about first horizontal pole and locating third suspension permanent magnet and the fourth suspension permanent magnet of both ends downside about the second horizontal pole.

Preferably, the lower framework comprises a third transverse rod and a fourth transverse rod which are transversely arranged in parallel and a second longitudinal rod which is longitudinally arranged and used for connecting the third transverse rod and the fourth transverse rod, and the guiding electromagnets comprise a first guiding electromagnet and a second guiding electromagnet which are arranged at the end parts of the left end and the right end of the third transverse rod and a third guiding electromagnet and a fourth guiding electromagnet which are arranged at the end parts of the left end and the right end of the fourth transverse rod.

Preferably, the upper frame, the lower frame and the upright are integrally formed.

Preferably, the upper side of motor tablet is equipped with conductive aluminum plate, and the downside of motor tablet is equipped with magnetic core.

The invention provides a suspension type permanent magnet electric maglev train system, which realizes the suspension of a maglev train through a suspension permanent magnet and a metal conductor generating eddy current, realizes the guidance of the maglev train by utilizing the interaction of a guiding electromagnet and the metal conductor to generate lateral force, and realizes the traction of the maglev train through a motor induction plate and a motor rotor which are arranged on a holding arm and a bogie, and has the characteristics of low construction cost, small floor area, strong climbing capability and strong terrain adaptability.

Drawings

Figure 1 is a schematic structural view of a suspended permanent magnet electric maglev train system according to the present invention,

FIG. 2 is a schematic structural view of the inverted U-shaped rail of the present invention,

figure 3 is a schematic structural diagram of a motor rotor and a motor induction plate in the invention,

figure 4 is a schematic view of the structure of the bogie in the present invention,

FIG. 5 is a schematic view showing the installation of the floating permanent magnet on the upper frame in the present invention.

In the figure, 1-suspension beam, 2-top beam, 3-inverted U-shaped holding rail, 4-wheel rail, 5-height-limiting guide rail, 6-suspension induction plate, 7-suspension permanent magnet, 8-hydraulic support wheel, 9-support wheel rail, 10-suspension rail, 11-current collector, 12-power supply rail, 13-brake caliper, 14-brake rail, 15-suspension rod, 16-suspension rod buckle, 17-motor induction plate, 18-motor mover, 181-primary iron core, 182-primary three-phase winding, 19-gap sensor, 20-guide plate, 21-guide electromagnet, 22-bogie, 23-electronic tag reader, 24-electronic tag, 25-holding arm, 26-radar, 31-first cross bar, 32-second cross bar, 33-third cross bar, 34-fourth cross bar, 41-first longitudinal bar, 42-second longitudinal bar.

Detailed Description

In order to make the technical solutions of the present invention better understood, the present invention is further described in detail below with reference to the accompanying drawings.

In the present invention, the terms "first", "second", "third" and "fourth" are used only for distinguishing different components, and are not in sequence. Taking fig. 1 as an example, the vertical paper surface is upward, the vertical paper surface is downward, the vertical paper surface is leftward, the vertical paper surface is rightward, the vertical paper surface is inward, the vertical paper surface is outward, the vertical paper surface is rightward, the vertical paper surface is outward, the left-right direction is horizontal, the vertical direction is vertical, and the front-back direction is vertical.

As shown in fig. 1 and 2, a suspension type permanent magnet electric maglev train system, including suspension beam 1, the type of falling U embrace rail 3 and bogie 22, bogie 22 includes the stand and is located both ends and parallel arrangement's upper frame and lower frame about the stand, upper frame and lower frame are horizontal "worker" style of calligraphy, bogie 22 is arranged in fixed the type of falling U of locating suspension beam 1 below and is embraced in rail 3, fall U embrace on the inner wall of rail 3 from last to down in proper order the symmetry be located the stand left and right sides suspension rail 10, power supply rail 12, deflector 20 and armful arm 25, suspension rail 10 and power supply rail 12 are located between upper frame and the lower frame, all be equipped with the current collector 11 that corresponds with power supply rail 12 on the left and right sides lateral wall of stand, the left end downside of upper frame and the right-hand member downside of upper frame all are equipped with suspension permanent magnet 7 and hydraulic support wheel 8, the side of going up of suspension rail 10 is equipped with suspension permanent magnet 7 and matches the suspension tablet 6 that corresponds and supports with hydraulic support with suspension permanent magnet 7 and hydraulic support Prop wheel 8 and match the support wheel rail 9 that corresponds, the left end downside of framework and the right-hand member downside of framework down all fixedly are equipped with motor active 18, the middle part downside of framework is equipped with and is located jib that two armful arms 25 and connect 16, the lower extreme that jib connects 16 is equipped with the jib 15 that is used for being connected bogie 22 and maglev train railway carriage or compartment, the one end of each armful arm 25 all with the perpendicular fixed connection of the corresponding lower extreme tip of the type of falling U armful rail 3, the side all is equipped with the motor tablet 17 that matches with corresponding motor active 18 on the other end of each armful arm 25, the left end tip of framework down all is equipped with the direction electro-magnet 21 that matches and corresponds with deflector 20 with the right-hand member tip of framework down in order to be used for realizing the direction of maglev train.

In this embodiment, the upper frame includes a first cross bar 31 and a second cross bar 32 which are horizontally arranged in parallel, and a first longitudinal bar 41 which is longitudinally arranged to connect the first cross bar 31 and the second cross bar 32, and the floating permanent magnet 7 includes a first floating permanent magnet and a second floating permanent magnet which are fixed to the lower surfaces of the left and right ends of the first cross bar 31 by rivets or screws, and a third floating permanent magnet and a fourth floating permanent magnet which are fixed to the lower surfaces of the left and right ends of the second cross bar 32 by rivets or screws; the lower framework comprises a third transverse rod 33 and a fourth transverse rod 34 which are transversely arranged in parallel and a second longitudinal rod 42 which is longitudinally arranged and used for connecting the third transverse rod 33 and the fourth transverse rod 34, and the guiding electromagnet 21 comprises a first guiding electromagnet and a second guiding electromagnet which are arranged at the end parts of the left end and the right end of the third transverse rod 33 and a third guiding electromagnet and a fourth guiding electromagnet which are arranged at the end parts of the left end and the right end of the fourth transverse rod 34; the upper frame, lower frame and upright are integrally formed to form a bogie 22.

The suspension permanent magnets 7 are Halbach permanent magnets, that is, each suspension permanent magnet 7 is sequentially combined by three or more groups of permanent magnets in different magnetizing directions (specifically, the arrow indicating direction of the three groups of permanent magnets at the position of a in fig. 5 is shown, the combination form is the prior art, and is not repeated here), so that the magnetic field on one side of the permanent magnet is continuously strengthened, the magnetic field on the other side of the permanent magnet is continuously weakened, and finally, the magnetic field generated below the permanent magnet is strong, the magnetic field above the permanent magnet is weak, and a stable magnetic field can be formed. When the magnetic suspension train moves, the magnetic field generated by the suspension permanent magnet 7 cuts the metal conductor, eddy current is generated in the metal conductor, a homopolar reverse magnetic field is formed, and then mutual repulsive force is generated to suspend the train body of the magnetic suspension train; when the gap between the upper frame of the bogie 22 and the suspension rail 10 is reduced, the eddy currents in the metal conductors are increased due to the reduction of the gap, so that the repulsive force between the eddy currents is increased to urge the bogie 22 to return to the original position, thereby maintaining the stability of the gap, ensuring the self-stability of the suspension of the maglev train, and not requiring active control of current to maintain the suspension of the maglev train. Because the suspension gap is related to the speed of the magnetic suspension train, the magnetic suspension train can generate enough suspension force to suspend the magnetic suspension train only when the magnetic suspension train reaches a certain speed, and when the magnetic suspension train is static or runs at a low speed, because the metal conductor is not cut by a magnetic field, a reverse magnetic field with the same polarity cannot be generated to suspend the magnetic suspension train, namely, the hydraulic support wheels 8 on the upper framework are matched with the support wheel tracks 9 on the suspension tracks 10 to support the train body of the magnetic suspension train. In this embodiment, the hydraulic support wheels 8 are automatically retracted and automatically opened according to the speed of the magnetic levitation train.

The device also comprises a gap sensor 19 arranged between the guide plate 20 and the guide electromagnet 21, wherein the gap sensor 19 is fixedly arranged at one end of the guide electromagnet 21 far away from the lower framework and is used for detecting the gap between the guide plate 20 and the guide electromagnet 21.

Four direction electro-magnet 21 all interacts with the deflector 20 that the matching corresponds and then produces the yawing force, simultaneously, utilize gap sensor 19 to detect the clearance between deflector 20 and the direction electro-magnet 21, and then obtain the clearance between bogie 22 and the type of falling U armful rail 3 inner wall, through carrying out closed-loop control to the clearance and then control the electric current on the direction electro-magnet 21, finally realize the electromagnetic suction size between direction electro-magnet 21 and the type of falling U armful rail 3 inboard lateral wall, make the clearance between bogie 22 and the type of falling U armful rail 3 inner wall invariable, guaranteed bogie 22's stable direction. It should be noted that, in this embodiment, a specific process of performing closed-loop control on the gap is as follows: the actual gap value is compared with the set gap value in real time, so that the current on the guide electromagnet 21 is controlled to control the transverse position of the bogie; the magnitude of the current to pilot electromagnet 21 should be increased when the actual gap value minus the set gap value is positive, and the magnitude of the current to pilot electromagnet 21 should be decreased when the actual gap value minus the set gap value is negative.

The motor rotor 18 comprises a primary iron core 181 and a primary three-phase winding 182, the primary three-phase winding 182 is wound on the primary iron core 181, an air gap is arranged between the primary iron core 181 and the motor induction plate 17, when three-phase symmetrical current is introduced into the primary three-phase winding 182, a traveling wave magnetic field which is in sinusoidal distribution in the linear direction is generated in the air gap, the motor induction plate 17 can induce electromotive force and generate induced current under the cutting of the generated traveling wave magnetic field, the generated induced current generates an excitation magnetic field and interacts with the traveling wave magnetic field to generate forward electromagnetic thrust, and the generated forward electromagnetic thrust enables the motor rotor 18 to move linearly so as to drive the magnetic suspension train to move forward. In this embodiment, the motor rotor 18 serves as a primary of the motor, the motor induction plate 17 serves as a secondary of the motor, the overall structure is a long-secondary short-primary structure, the upper side surface of the motor induction plate 17 is provided with a conductive aluminum plate, and the lower side surface of the motor induction plate 17 is provided with a magnetic conductive iron core.

The slider of the current collector 11 contacts with the power supply rail 12 to receive the current and transmit the current to the bogie 22, and the current collector 11 and the power supply rail 12 are matched and correspond to each other to realize power supply of the maglev train system.

As shown in fig. 1 and 2, a top beam 2 is arranged between the suspension beam 1 and the inverted U-shaped holding rail 3, and the inverted U-shaped holding rail 3 is fixed on the suspension beam 1 through the top beam 2. In this embodiment, an intermediate body top beam 2 is arranged to connect the suspension beam 1 and the inverted U-shaped holding rail 3, so as to ensure the connection stability and reliability.

As shown in fig. 1 and 2, the speed measurement positioning system is further included, the speed measurement positioning system includes a radar 26, an electronic tag reader 23 and a plurality of electronic tags 24, the radar 26 is arranged on the upper side of the upper frame, the electronic tag reader 23 is arranged on the upper side of the middle part of the upper frame, and the plurality of electronic tags 24 are arranged at intervals on the inner wall of the top of the inverted U-shaped holding rail 3 and are matched with the electronic tag reader 23 to correspond to each other.

In this embodiment, the radar 26 is a doppler radar, and the electronic tag 24 is disposed on the top inner wall of the inverted U-shaped rail 3 at a certain interval. The speed measurement positioning system comprises two independent speed measurement methods, wherein the first speed measurement method comprises the following steps: the running speed of the bogie is obtained by the doppler radar 26, and the second speed measurement method is as follows: the running speed of the bogie is obtained by matching and corresponding the electronic tag reader 23 with the electronic tags 25 at different positions, and then the system compares the running speeds of the bogie obtained by two different methods and performs five sliding filtering, so that the final speed of the bogie is obtained.

As shown in fig. 1 and 2, the brake device further comprises a brake caliper 13 and a brake rail 14, wherein the brake caliper 13 is arranged at the left end part of the lower frame or/and the right end part of the lower frame, and the brake rail 14 is arranged on the inner wall of the inverted U-shaped holding rail 3 and corresponds to the brake caliper 13 in a matching manner.

In this embodiment, when the maglev train is in a levitation state (i.e. the maglev train is in a high speed state), a magnetic field opposite to the advancing direction of the maglev train can be generated by passing a reverse alternating current to the primary three-phase winding 182 of the motor mover 18, and the magnetic field generates a braking force to decelerate the maglev train; when the magnetic suspension train is in a low-speed state, the corresponding brake rail 14 is clamped by tightening the jaws of the brake caliper 13, and the magnetic suspension train is braked and decelerated by using the friction force between the brake caliper 13 and the brake rail 14. When the magnetic suspension train has an emergency, two braking modes can be adopted to brake and decelerate the magnetic suspension train at the same time.

As shown in fig. 1 and 2, the height-limiting device further comprises a wheel rail 4 and a height-limiting guide rail 5, wherein the height-limiting guide rail 5 is arranged on the upper side surface of the left end of the upper framework or/and the upper side surface of the right end of the upper framework, and the wheel rail 4 is arranged on the inner wall of the top of the inverted U-shaped holding rail 3 and corresponds to the height-limiting guide rail 5 in a matching manner.

In this embodiment, the wheel rail 4 and the height-limiting guide rail 5 can effectively prevent the top of the bogie 22 from being suspended too high and contacting the top of the inverted U-shaped holding rail 3.

The suspension type permanent magnet electric maglev train system provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the core concepts of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. The utility model provides a suspension type permanent magnet electric maglev train system, a serial communication port, including suspension beam (1), the type of falling U embrace rail (3) and bogie (22), bogie (22) include the stand and lie in about the stand both ends and parallel arrangement's last framework and lower framework, it is horizontal "worker" style of calligraphy to go up the framework and be the framework down, and bogie (22) are arranged in fixed the type of falling U of locating suspension beam (1) below and are embraced in rail (3), and the inner wall of the type of falling U is embraced rail (3) from last to being equipped with suspension rail (10) that lie in the stand left and right sides down symmetrically in proper order suspension rail (12), power supply rail (12), deflector (20) and armful arm (25), and suspension rail (10) and power supply rail (12) lie in between framework and the lower framework, all be equipped with current collector (11) that correspond with power supply rail (12) matching on the left and right sides lateral wall of stand, and the left end downside of upper frame and the right-hand member all are equipped with suspension permanent magnet (7) and hydraulic support wheel (8) The suspension rail (10) is provided with a suspension induction plate (6) matched and corresponding to the suspension permanent magnet (7) and a support wheel rail (9) matched and corresponding to the hydraulic support wheel (8) on the upper side, a motor rotor (18) is fixedly arranged on the lower side surface of the left end of the lower framework and the lower side surface of the right end of the lower framework, a suspender buckle (16) positioned between two embracing arms (25) is arranged on the lower side surface of the middle part of the lower framework, a suspender (15) used for connecting a bogie (22) and a maglev train bridge compartment is arranged at the lower end of the suspender buckle (16), one end of each embracing arm (25) is vertically and fixedly connected with the corresponding lower end part of the inverted U-shaped embracing rail (3), a motor induction plate (17) matched with the corresponding motor rotor (18) is arranged on the upper side surface of the other end of each embracing arm (25), and a gap is arranged between the motor induction plate (17) and the motor rotor (18), the left end part of the lower framework and the right end part of the lower framework are respectively provided with a guide electromagnet (21) which is matched and corresponds to the guide plate (20) so as to realize the guidance of the magnetic suspension train.

2. A suspended permanent-magnet electric maglev train system according to claim 1, wherein a top beam (2) is arranged between the suspension beam (1) and the inverted U-shaped holding rail (3), and the inverted U-shaped holding rail (3) is fixed on the suspension beam (1) through the top beam (2).

3. The suspended permanent-magnet electric maglev train system according to claim 1, further comprising a speed-measuring and positioning system, wherein the speed-measuring and positioning system comprises a radar (26), an electronic tag reader (23) and a plurality of electronic tags (24), the radar (26) is arranged on the upper side of the upper frame, the electronic tag reader (23) is arranged on the upper side of the middle part of the upper frame, and the plurality of electronic tags (24) are arranged on the inner wall of the top part of the inverted U-shaped holding rail (3) at intervals and are matched with and correspond to the electronic tag reader (23).

4. A suspended permanent-magnet electric maglev train system according to claim 1, further comprising a brake caliper (13) and a brake rail (14), wherein the brake caliper (13) is arranged at the left end of the lower frame or/and the right end of the lower frame, and the brake rail (14) is arranged on the inner wall of the inverted U-shaped holding rail (3) and is matched and corresponding to the brake caliper (13).

5. The suspended permanent-magnet electric maglev train system according to claim 1, further comprising wheel rails (4) and height-limiting guide rails (5), wherein the height-limiting guide rails (5) are arranged on the upper side surface of the left end of the upper frame or/and the upper side surface of the right end of the upper frame, and the wheel rails (4) are arranged on the inner wall of the top of the inverted U-shaped holding rail (3) and are matched and corresponding to the height-limiting guide rails (5).

6. A suspended permanent-magnet electric maglev train system according to claim 1, further comprising a gap sensor (19) disposed between the guide plate (20) and the guide electromagnet (21), the gap sensor (19) being fixedly disposed at an end of the guide electromagnet (21) remote from the lower frame for detecting a gap between the guide plate (20) and the guide electromagnet (21).

7. Suspension permanent-magnet electric maglev train system according to claim 1, wherein the upper frame comprises a first cross bar (31) and a second cross bar (32) arranged in parallel in the transverse direction and a first longitudinal bar (41) arranged in the longitudinal direction for connecting the first cross bar (31) and the second cross bar (32), and the levitation permanent magnets (7) comprise a first levitation permanent magnet and a second levitation permanent magnet arranged on the lower side surfaces of the left and right ends of the first cross bar (31) and a third levitation permanent magnet and a fourth levitation permanent magnet arranged on the lower side surfaces of the left and right ends of the second cross bar (32).

8. A suspended permanent-magnet electric maglev train system according to claim 1, wherein the lower frame comprises a third cross bar (33) and a fourth cross bar (34) arranged in parallel in the transverse direction and a second longitudinal bar (42) arranged in the longitudinal direction for connecting the third cross bar (33) and the fourth cross bar (34), and the guiding electromagnets (21) comprise a first guiding electromagnet and a second guiding electromagnet arranged at the left and right end portions of the third cross bar (33) and a third guiding electromagnet and a fourth guiding electromagnet arranged at the left and right end portions of the fourth cross bar (34).

9. The suspended permanent magnet electric maglev train system of claim 1, wherein the upper frame, lower frame and upright are integrally formed.

10. Suspended permanent-magnet electric maglev train system according to claim 1, characterized in that the upper side of the motor induction plate (17) is provided with conductive aluminum plate and the lower side of the motor induction plate (17) is provided with a magnetically conductive iron core.