A suspended magnetic levitation transportation system

Abstract

The invention discloses a suspended maglev transportation system, comprising a track system, a suspension system, a traction system and a carriage body, wherein the track system comprises a track beam, an inverted U-shaped steel rail and a closed box beam; the suspension system comprises a suspension controller, a suspension electromagnet, a first permanent magnet, a second permanent magnet and a suspension frame, wherein the suspension electromagnet is installed on both sides of the suspension frame and arranged opposite to the inverted U-shaped steel rail, the suspension controller is connected to the suspension electromagnet, the first permanent magnet is installed directly below the suspension frame electromagnet, the second permanent magnet is installed on the upper surface of the extended arm at the lower part of the closed box beam, the first permanent magnet and the second permanent magnet have the same magnetic pole and are arranged oppositely; the traction system comprises a linear synchronous motor, the mover of the linear synchronous motor is fixed on the top of the suspension frame, and the stator thereof is fixed on the lower part of the track beam; the carriage body is suspended below the track beam through the suspension frame. It has the advantages of high suspension efficiency, low suspension energy consumption, light vehicle body weight, low traction energy consumption and strong emergency rescue capability.

Description

Technical Field

[0001] The invention belongs to the technical field of maglev transportation, and in particular relates to a suspended maglev transportation system. Background Art

[0002] As a diversified urban rail transit system, the suspended maglev transportation system can serve the sightseeing of tourist areas, the three-dimensional transportation between urban buildings, the supplementary transportation of elevated interchanges, etc. With its many advantages, it is expected to have broad development and application prospects in my country.

[0003] The suspended maglev transportation system is different from the traditional transportation system in that it is mainly composed of four parts: the track system, the suspension system, the traction system, and the car body. The car body and the track system are suspended and guided by electromagnetic force without contact, and the electromagnetic force generated by the linear motor is used to achieve traction operation. There is no need for wheel-rail contact during vehicle operation, which saves the maintenance and replacement of worn tires and reduces the maintenance cost of the track. At the same time, it solves the problems of noise and vibration caused by wheel-rail contact, does not disturb the public, and is more suitable for traveling in the city. However, the suspended maglev transportation system with the above structure has a large suspension energy consumption, and the use of linear motors increases the weight of the whole machine. In addition, if an emergency occurs and an unexpected stop occurs, the suspension frame is easily damaged. Summary of the invention

[0004] In view of this, the purpose of the present invention is to avoid the deficiencies in the prior art and provide a suspended magnetic levitation transportation system, which has the advantages of high suspension efficiency, low suspension energy consumption, light vehicle weight, low traction energy consumption and strong emergency rescue capability.

[0005] The object of the present invention is achieved through the following technical solutions: a suspended maglev transportation system is provided, comprising a track system, a suspension system, a traction system and a carriage body, wherein the track system comprises a track beam, an inverted U-shaped rail and a closed box beam, wherein the closed box beam is arranged below the track beam, and the inverted U-shaped rail is laid on both sides below the track beam along the forward direction of the track beam; the suspension system comprises a suspension controller, a suspension electromagnet, a first permanent magnet, a second permanent magnet and a suspension frame placed in the closed box beam, wherein the suspension electromagnet is installed on both sides of the suspension frame and arranged opposite to the inverted U-shaped rail, wherein the suspension controller is connected to the suspension electromagnet, wherein the first permanent magnet is installed directly below the suspension frame electromagnet, wherein the second permanent magnet is installed on the upper surface of the extended arm at the lower part of the closed box beam, wherein the first permanent magnet and the second permanent magnet have the same magnetic poles and are arranged opposite to each other; wherein the traction system comprises a linear synchronous motor arranged below the track beam, wherein the mover of the linear synchronous motor is fixed on the top of the suspension frame, and the stator thereof is fixed on the lower part of the track beam; and the carriage body is suspended below the track beam through the suspension frame.

[0006] As a further improvement, the linear synchronous motor is a permanent magnet linear synchronous motor, whose stator is a coil laid in the center of the track beam and along its forward direction, and whose mover is a third permanent magnet fixed to the top of the suspension frame and arranged opposite to the coil.

[0007] As a further improvement, the suspended maglev transportation system further comprises guide wheels, which are respectively mounted on both side ends of the lower part of the suspension frame.

[0008] As a further improvement, the suspended maglev transportation system also includes a hydraulic support system, which includes a hydraulic station, a hydraulic control system and a hydraulic support wheel. The hydraulic station is installed on the car body, and the hydraulic control system is respectively connected to the hydraulic station and the hydraulic support wheel. The hydraulic support wheel is fixed to the bottom of the suspension frame and is located above the protruding arm at the lower part of the closed box beam.

[0009] As a further improvement, the suspended maglev transportation system further includes a connecting beam fixed below the suspension frame, and the suspension frame suspends the vehicle body through the connecting beam.

[0010] As a further improvement, an air spring and a damper are provided between the connecting beam and the vehicle body, and the connecting beam suspends the vehicle body through the air spring and the damper.

[0011] As a further improvement, the connecting beam is an inverted T-shaped structure, including a vertical pole and a cross bar fixed to its lower end, the upper end of the vertical pole is connected to the suspension frame, one end of the air spring is connected to the cross bar, and the other end is connected to the car body, one end of the damper is connected to the cross bar, and the other end is connected to the car body.

[0012] As a further improvement, a closed lifting device is arranged above the car body, the cross bar is placed in the lifting device, the vertical bar is arranged through the lifting device, the upper ends of the air spring and damper are fixed to the top of the lifting device, and the lower ends are fixed to the cross bar.

[0013] As a further improvement, the end surface of the lifting device is a semicircular structure or a boss structure.

[0014] As a further improvement, the suspended maglev transportation system further includes a brake disposed between the carriage body and the closed box beam, and the brake is connected to the hydraulic control system.

[0015] Compared with the prior art, the suspended maglev transportation system provided by the present invention, on the one hand, realizes the combination of electromagnetic suspension and permanent magnetic suspension by setting the suspension electromagnet, the first permanent magnet and the second permanent magnet, thereby greatly improving the suspension efficiency and reducing the suspension energy consumption; on the other hand, the motor coil installed on the track beam and the third permanent magnet installed on the suspension frame form the stator and mover of the linear synchronous motor, which provide the forward thrust and backward braking force for the maglev train, which can reduce the weight of the vehicle body, while improving the motor efficiency and reducing the energy consumption of the traction system; on the other hand, by adding a hydraulic support system, the emergency rescue capability of the suspended maglev transportation system is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the present invention. A person skilled in the art can obtain other drawings based on the following drawings without creative work.

[0017] Figure 1 It is a structural diagram of one direction of the suspended maglev transportation system.

[0018] Figure 2 It is a structural diagram of the other direction of the suspended maglev transportation system.

[0019] Figure 3 yes Figure 2 A is an enlarged view of the middle image.

[0020] Among them: 1-carriage body, 2-track beam, 3-inverted U-shaped rail, 4-closed box beam, 5-suspension electromagnet, 6-first permanent magnet, 7-second permanent magnet, 8-suspension frame, 9-extending arm, 10-coil, 11-third permanent magnet, 12-guide wheel, 13-hydraulic support wheel, 14-vertical pole, 15-cross bar, 16-air spring, 17-damper, 18-hoisting device, 19-brake, 20-gap sensor. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0022] In the present invention, directions such as "left", "right", "up", "down", "top", "bottom", "horizontal" and "vertical" are used in the Figure 1 The terms "first", "second", and "third" are mainly used to distinguish different components, but do not specifically limit the components.

[0023] like Figures 1 to 3As shown, the suspended maglev transportation system provided by the embodiment of the present invention includes a track system, a suspension system, a traction system and a carriage body 1, wherein the track system includes a track beam 2, an inverted U-shaped rail 3 and a closed box beam 4, the suspension system includes a suspension controller, a suspension electromagnet 5, a first permanent magnet 6, a second permanent magnet 7 and a suspension frame 8 placed in the closed box beam 4, and the traction system includes a linear synchronous motor arranged below the track beam 2. Specifically: the aforementioned closed box beam 4 is arranged below the track beam 2 and serves as a supporting structure of the carriage body 1. The inverted U-shaped rail 3 is laid on both sides below the track beam 2 along the forward direction of the track beam 2 to provide a magnetic circuit for the suspension electromagnet 5; the suspension electromagnet 5 is installed on both sides of the suspension frame 8 and is arranged opposite to the inverted U-shaped rail 3. The suspension controller is connected to the suspension electromagnet 5, and the suspension electromagnet 5 plays a role in the suspension controller. Under the present invention, the current passing through the electromagnet is controlled to generate an electromagnetic attraction between the suspension electromagnet 5 and the inverted U-shaped rail 3, so that the suspension frame 8 is suspended upward; at the same time, when the maglev train deviates from the track, the suspension electromagnet 5 generates a lateral guiding force, so that the suspension frame 8 maintains a lateral self-stabilizing performance; the first permanent magnet 6 and the second permanent magnet 7 are used for suspending the car body 1, the first permanent magnet 6 is installed directly below the electromagnet of the suspension frame 8, and the second permanent magnet 7 is installed on the upper surface of the extended arm 9 at the bottom of the closed box beam 4. The first permanent magnet 6 and the second permanent magnet 7 have the same magnetic poles and are arranged opposite to each other, so that a repulsive force is generated between the two, pushing the suspension frame 8 to move upward. As a part of the suspension system, the energy consumption of the suspension system can be reduced; the mover of the linear synchronous motor is fixed on the top of the suspension frame 8, and its stator is fixed on the bottom of the track beam 2; the car body 1 is suspended below the track beam 2 through the suspension frame 8. It should be noted that the suspension frame 8 is placed in the closed box beam 4 as a component connecting the car body 1. It is also a supporting and connecting component for installing the suspension electromagnet 5, the linear synchronous motor mover, the first permanent magnet 6 and the second permanent magnet 7, etc., and is the core of the suspended maglev transportation system of the present invention.

[0024] As a further preferred embodiment, the linear synchronous motor is a permanent magnet linear synchronous motor, the stator of which is a coil 10 laid in the center of the track beam 2 and along its forward direction, and the mover is a third permanent magnet 11 fixed to the top of the suspension frame 8 and arranged opposite to the coil 10. The third permanent magnet 11 is used for electromagnetic traction. Specifically, see Figure 1 It can be seen that the third permanent magnet 11 is located between the suspension electromagnets 5 installed on both sides of the suspension frame 8. Through this arrangement, a traction force or a braking force is generated between the stator and the mover of the linear synchronous motor along the forward direction of the track beam 2, thereby pushing the maglev train forward or slowing down the vehicle.

[0025] At the same time, if Figure 1As shown, in order to prevent the maglev train from deviating laterally from the track, guide wheels are provided between the two sides of the suspension frame 8 and the two side walls of the closed box beam 4. Specifically, in the preferred embodiment of the present invention, the guide wheels 12 are respectively installed at the two side ends of the lower part of the suspension frame 8, serving as auxiliary devices for guiding the suspension electromagnet 5, thereby ensuring reliable guidance of the suspended maglev transportation system.

[0026] As a further preferred embodiment, the suspension frame 8 is connected to the car body 1 through a connecting beam, and an air spring 16 and a damper 17 are arranged between the car body 1 and the connecting beam. The connecting beam suspends the car body 1 through the air spring 16 and the damper 17 to form an auxiliary suspension system, which provides a certain rigidity and damping between the suspension frame 8 and the car body 1 to improve the comfort of the maglev train. It should be noted that the above-mentioned connecting beam is preferably an inverted T-shaped structure, including a vertical rod 14 and a cross bar 15 fixed to its lower end, the upper end of the vertical rod 14 is connected to the suspension frame 8, one end of the air spring 16 is connected to the cross bar 15, and the other end thereof is connected to the car body 1, and one end of the damper 17 is connected to the cross bar 15, and the other end thereof is connected to the car body 1.

[0027] like Figure 1 As shown, a closed lifting device 18 is arranged above the carriage body 1, the cross bar 15 is placed in the lifting device 18, the vertical bar 14 is arranged through the lifting device 18, the upper ends of the air spring 16 and the damper 17 are fixed to the top of the lifting device 18, and the lower ends are fixed to the cross bar 15. Through this arrangement, the cross bar 15 holds up the lifting device 18 through the air spring and the damper 17, and the lifting device 18 is just connected to the carriage body 1, that is, the cross bar 15 lifts the carriage body 1 through the air spring and the damper 17. It should be noted that the end face of the lifting device 18 is a semicircular structure or a boss structure.

[0028] Specifically, the present invention also includes a hydraulic support system and a brake 19, the hydraulic support system includes a hydraulic station, a hydraulic control system and a hydraulic support wheel 13, the hydraulic station is installed on the car body 1, the hydraulic control system is connected to the hydraulic station and the hydraulic support wheel 13 respectively, the hydraulic support wheel 13 is fixed to the bottom of the suspension frame 8, and is located above the extended arm 9 at the bottom of the closed box beam 4, the brake 19 is arranged between the car body 1 and the closed box beam 4, and the brake 19 is connected to the hydraulic control system. When the maglev train fails and needs to land, the brake 19 starts to brake through the action of the hydraulic station and the hydraulic control system, and the hydraulic support wheel 13 descends to the extended arm 9 at the bottom of the closed box beam 4 to avoid damage to the suspension frame 8, which serves as an emergency rescue device for emergency stop.

[0029] In addition, the suspension system of the present invention further includes an acceleration sensor, a gap sensor and a current sensor respectively connected to the suspension controller, wherein the acceleration sensor is used to measure the vertical motion acceleration of the suspension frame 8, the gap sensor is used to measure the suspension gap between the suspension frame 8 and the track beam 2, and the current sensor is used to measure the suspension current of the suspension electromagnet 5. The acceleration sensor, the gap sensor and the current sensor respectively transmit their measurement information to the suspension controller, and the suspension controller controls the suspension force of the suspension frame 8 according to the above measurement information. Figure 2 The gap sensor 20 is specifically installed on the suspension electromagnet 5 .

[0030] Therefore, in the present invention, the track beam 2 and the closed box beam 4 provide structural support for the suspended maglev transportation system, and are installed with an inverted U-shaped rail 3 and a stator (coil 10) of a linear synchronous motor; the suspension electromagnet 5, the first permanent magnet 6, and the second permanent magnet 7 are important components of the suspension system. The electromagnetic attraction between the suspension electromagnet 5 and the inverted U-shaped rail 3 installed on the track beam 2, and the repulsion between the first permanent magnet 6 and the second permanent magnet 7 constitute the suspension system of the suspended maglev transportation system, providing a vertical upward suspension force and a lateral guiding force for the suspended maglev transportation system; the coil 10 installed on the track beam 2 and the third permanent magnet 11 installed on the suspension frame 8 form the stator and mover of the linear synchronous motor, providing forward thrust and backward braking force for the maglev train; the air spring 16 and the damper 17 between the suspension frame 8 and the car body 1 serve as an auxiliary suspension system, which can isolate the vibration of the suspension frame 8 and improve the riding comfort of the maglev train. When the suspended maglev transportation system needs to stop urgently, emergency rescue is achieved through the hydraulic support system and the brake 19.

[0031] Compared with the prior art, the present invention has the following advantages:

[0032] 1) The combination of electromagnetic suspension and permanent magnetic suspension is achieved by setting the suspension electromagnet 5, the first permanent magnet 6 and the second permanent magnet 7, which greatly improves the suspension efficiency and reduces the suspension energy consumption;

[0033] 2) The linear synchronous motor is a permanent magnet linear synchronous motor, whose stator is a coil and the mover is a third permanent magnet 11 arranged opposite to the coil, which can reduce the weight of the vehicle body, improve the motor efficiency, and reduce the energy consumption of the traction system;

[0034] 3) By adding a hydraulic support system, the emergency rescue capability of the suspended maglev transportation system is improved.

[0035] Many specific details are set forth in the above description to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein, and therefore, they should not be construed as limiting the scope of protection of the present invention.

[0036] In summary, although the present invention lists the above-mentioned preferred embodiments, it should be noted that although technicians in this field can make various changes and modifications, unless such changes and modifications deviate from the scope of the present invention, they should be included in the protection scope of the present invention.

Claims

1. A suspended maglev transportation system, comprising a track system, a suspension system, a traction system and a carriage body (1), characterized in that: The track system comprises a track beam (2), an inverted U-shaped steel rail (3) and a closed box beam (4); the closed box beam (4) is arranged below the track beam (2); the inverted U-shaped steel rail (3) is laid on both sides below the track beam (2) along the forward direction of the track beam (2); the suspension system comprises a suspension controller, a suspension electromagnet (5), a first permanent magnet (6), a second permanent magnet (7) and a suspension frame (8) arranged in the closed box beam (4); the suspension electromagnet (5) is installed on both sides of the suspension frame (8) and is arranged opposite to the inverted U-shaped steel rail (3); the suspension controller is connected to the suspension electromagnet (5); the first permanent magnet (6) is installed directly below the electromagnet of the suspension frame (8); the second permanent magnet (7) is installed on the suspension frame (8); The magnet (7) is installed on the upper surface of the extending arm (9) at the bottom of the closed box beam (4); the first permanent magnet (6) and the second permanent magnet (7) have the same magnetic poles and are arranged opposite to each other; the traction system comprises a linear synchronous motor arranged below the track beam (2); the mover of the linear synchronous motor is fixed on the top of the suspension frame (8), and the stator is fixed on the bottom of the track beam (2); the carriage body (1) is suspended below the track beam (2) through the suspension frame (8); the linear synchronous motor is a permanent magnet linear synchronous motor, the stator is a coil (10) arranged at the center of the track beam (2) and along its forward direction, and the mover is a third permanent magnet (11) fixed on the top of the suspension frame (8) and arranged opposite to the coil (10); The suspended magnetic levitation transportation system further comprises guide wheels, wherein the guide wheels (12) are respectively mounted on both side ends of the lower part of the suspension frame (8); The suspended maglev transportation system further comprises a hydraulic support system, the hydraulic support system comprising a hydraulic station, a hydraulic control system and a hydraulic support wheel (13), the hydraulic station being mounted on the carriage body (1), the hydraulic control system being connected to the hydraulic station and the hydraulic support wheel (13) respectively, the hydraulic support wheel (13) being fixed to the bottom of the suspension frame (8) and being located above the extending arm (9) at the bottom of the closed box beam (4); The suspended magnetic levitation transportation system further comprises a connecting beam fixed below the suspension frame (8), and the suspension frame (8) suspends the carriage body (1) via the connecting beam; The suspended maglev transportation system further comprises a brake (19) arranged between the carriage body (1) and the closed box beam (4), and the brake (19) is connected to a hydraulic control system.

2. The suspended maglev transportation system according to claim 1, characterized in that: An air spring (16) and a damper (17) are provided between the connecting beam and the vehicle body (1), and the connecting beam suspends the vehicle body (1) via the air spring (16) and the damper (17).

3. The suspended maglev transportation system according to claim 2, characterized in that: The connecting beam is an inverted T-shaped structure, comprising a vertical rod (14) and a cross rod (15) fixed to the lower end thereof, the upper end of the vertical rod (14) is connected to the suspension frame (8), one end of the air spring (16) is connected to the cross rod (15), and the other end thereof is connected to the vehicle body (1), and one end of the damper (17) is connected to the cross rod (15), and the other end thereof is connected to the vehicle body (1).

4. The suspended maglev transportation system according to claim 3, characterized in that: A closed hoisting device (18) is arranged above the carriage body (1), the cross bar (15) is placed in the hoisting device (18), the vertical bar (14) passes through the hoisting device (18), the upper ends of the air spring (16) and the damper (17) are fixed to the top of the hoisting device (18), and the lower ends thereof are fixed to the cross bar (15).

5. The suspended maglev transportation system according to claim 4, characterized in that: The end surface of the hanging device (18) is a semicircular structure or a boss structure.

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