CN210733859U - A propulsion device for a maglev train - Google Patents

Abstract

The utility model provides a advancing device for maglev train. The propulsion device comprises: a connecting device and a coil; the top of the connecting device is connected with the bottom of a bogie arranged below the vehicle body; the coil is connected with the bottom of the connecting device; the coil is arranged right above the permanent magnet track. Use the utility model discloses can reduce high temperature superconductive magnetic suspension system engineering cost level, practice thrift the cost.

Description

A propulsion device for a maglev train

technical field

The present application relates to the technical field of high temperature superconducting maglev, in particular to a propulsion device for a maglev train.

Background technique

In the prior art, in the field of rail transit maglev, traditional linear motors are usually used to realize the propulsion of maglev trains, even for high-temperature superconducting maglev. Whether it is an asynchronous linear induction motor used at low speed or a synchronous linear motor used at high speed, as long as a traditional linear motor is used, additional coils or propulsion devices need to be provided along the track in the track.

To sum up, since the propulsion technology of the maglev train in the prior art has the above-mentioned shortcomings, how to propose a better propulsion device for the maglev train is an urgent problem to be solved in the art.

Utility model content

In view of this, the utility model provides a propulsion device for a maglev train, which can reduce the engineering cost level of a high temperature superconducting maglev system and save costs.

The technical scheme of the present utility model is specifically realized in this way:

A propulsion device for a maglev train, the propulsion device comprising: a connecting device and a coil;

The top of the connecting device is connected with the bottom of the bogie arranged under the vehicle body;

The coil is connected with the bottom of the connecting device; the coil is arranged just above the permanent magnet track.

Preferably, the permanent magnet track is installed on the concrete structure through the track buttress.

Preferably, the connecting device and the coil are installed side by side with the high-temperature superconducting suspension device on the bogie above the permanent magnet track.

Preferably, when the cross section of the permanent magnet track includes 4 permanent magnets, and the magnetization directions of each permanent magnet from left to right are rightward, upward, upward and leftward, respectively, the shape of the coil is a rectangle. , and the bottom of the coil is located directly above the two permanent magnets in the middle; the current direction in the coil is counterclockwise or clockwise.

Preferably, when the cross section of the permanent magnet track includes four permanent magnets, and the magnetization directions of the permanent magnets from left to right are upward, upward, downward and downward, respectively, the shape of the coil is two. Connected rectangles, the bottom of one rectangle is directly above the two permanent magnets on the left, and the bottom of the other rectangle is directly above the two permanent magnets on the right; the current directions in the two rectangles are opposite.

Preferably, when the cross section of the permanent magnet track includes 5 permanent magnets, and the magnetization directions of the permanent magnets from left to right are respectively right, upward, left, downward and right, the The shape is two connected rectangles, the bottom of one rectangle is directly above the leftmost two permanent magnets, and the bottom of the other rectangle is directly above the rightmost two permanent magnets; the current direction in the two rectangles on the contrary.

As can be seen from the above, in the propulsion device for a maglev train in the present invention, the coil is arranged on the bogie below the car body and above the permanent magnet track, making full use of the high temperature superconducting magnetic levitation to realize the suspension and guiding functions of the permanent magnet track, making it part of the drive system. Through the organic combination of the two, the entire high-temperature superconducting magnetic levitation system is simplified, and the integration degree of the magnetic levitation system is improved as a whole. Moreover, the technical solution of the present invention does not use the AC synchronous linear motor technology used in the traditional magnetic suspension system in the prior art, but uses a method similar to the basic principle of the DC linear motor and the high temperature superconducting magnetic suspension. The new driving method of maglev vehicle traction is realized, so there is no need to lay coils along the track or set up additional propulsion devices, which can significantly reduce the engineering cost level of the high-temperature superconducting maglev system and save costs.

Description of drawings

FIG. 1 is a front view of a propulsion device for a maglev train in an embodiment of the present invention.

2 is a side view of a propulsion device for a maglev train in an embodiment of the present invention.

3 is a schematic diagram of a coil and a permanent magnet track in a specific embodiment of the present invention.

4 is a schematic diagram of a coil and a permanent magnet track in another specific embodiment of the present invention.

FIG. 5 is a schematic diagram of a coil and a permanent magnet track in another specific embodiment of the present invention.

Detailed ways

In order to make the technical solutions and advantages of the present utility model clearer, the present utility model will be described in further detail below with reference to the accompanying drawings and specific embodiments.

The utility model proposes a propulsion device for a maglev train.

As shown in FIGS. 1 to 5 , the propulsion device for a maglev train in the embodiment of the present invention includes: a connecting device 3 and a coil 4 ;

The top of the connecting device 3 is connected with the bottom of the bogie 2 arranged under the vehicle body 1;

The coil 4 is connected to the bottom of the connecting device 3 ; the coil 4 is arranged just above the permanent magnet track 5 .

By using the above-mentioned propulsion device, the corresponding maglev train can be driven. The above-mentioned propulsion device for a maglev train in the present invention is applicable to all high temperature superconducting maglev systems.

In addition, in the technical solution of the present invention, various specific implementation manners can be used to realize the above-mentioned coil. For example, the winding method of the coil can be preset according to the needs of the actual application and according to the specific structure of the permanent magnet track (for example, the arrangement of the permanent magnets in the magnetic track). Hereinafter, the technical solutions of the present utility model will be introduced in detail by taking some of the specific implementation manners as examples.

For example, preferably, as shown in FIG. 3, in a specific embodiment of the present invention, when the cross section of the permanent magnet track includes 4 permanent magnets, and the magnetization directions of each permanent magnet from left to right are respectively When the direction is to the right, up, up and left, the shape of the coil is a rectangle, and the bottom of the coil is located directly above the two permanent magnets in the middle; the current direction in the coil is counterclockwise or clockwise.

At this time, since the magnetic field strength decreases rapidly with the distance gradient, and the top of the rectangular coil in Figure 3 is far away from the permanent magnet track, the magnetic field strength at the top is extremely low and can be ignored. The actual force part of the coil is concentrated on the lower side (ie the bottom side) of the coil and the parts of the two sides of the coil close to the magnetic field. According to the left-hand ampere rule, the force direction of the bottom edge of the rectangular coil shown in Figure 3 is perpendicular to the outward direction of the paper (that is, the preset driving direction), while the force direction of the two sides of the rectangular coil is It is the opposite. According to the actual experiment and simulation calculation, it can be seen that the resultant force of the two is not zero, and the direction of the resultant force is perpendicular to the outward surface of the paper (ie, the preset driving direction). Therefore, the driving or traction of the maglev vehicle can be realized by using the resultant force as the driving force.

For another example, preferably, as shown in FIG. 4 , in another specific embodiment of the present invention, when the cross section of the permanent magnet track includes 4 permanent magnets, and the magnetization direction of each permanent magnet is from left to right When the coils are upward, upward, downward and downward respectively, the shape of the coil is two connected rectangles, the bottom of one rectangle is located directly above the two permanent magnets on the left, and the bottom of the other rectangle is located on the right two. Directly above the permanent magnet; the current directions in the two rectangles are opposite. For example, as shown in Figure 4, the direction of current flow in the rectangle on the left of the coil is counterclockwise, while the direction of current flow in the rectangle on the right is clockwise.

The driving principle of the coil shown in FIG. 4 is similar to the driving principle in FIG. 3 , so it will not be repeated here.

For another example, preferably, as shown in FIG. 5, in another specific embodiment of the present invention, when the cross section of the permanent magnet track includes 5 permanent magnets, and the magnetization direction of each permanent magnet is from left to right When they are rightward, upward, leftward, downward and rightward respectively, the shape of the coil is two connected rectangles. The bottom is directly above the two rightmost permanent magnets; the current directions in the two rectangles are opposite. For example, as shown in Figure 5, the direction of current flow in the rectangle on the left of the coil is counterclockwise, while the direction of current flow in the rectangle on the right is clockwise.

The driving principle of the coil shown in FIG. 5 is similar to the driving principle in FIG. 3 and FIG. 4 , so it is not repeated here.

In addition, preferably, in a specific embodiment of the present invention, the permanent magnet track 5 is installed on the concrete structure 7 through the track support pier 6 .

In addition, preferably, in a specific embodiment of the present invention, the connecting device 3 and the coil 4 are installed side by side with the high temperature superconducting suspension device 8 on the bogie 2 above the permanent magnet track 5 .

To sum up, in the technical solution of the present utility model, the coil is arranged on the bogie below the vehicle body and above the permanent magnet track, and the permanent magnet track with the high temperature superconducting magnetic levitation to realize the levitation and guiding functions is fully utilized, so that the become part of the drive system. Through the organic combination of the two, the entire high-temperature superconducting magnetic levitation system is simplified, and the integration degree of the magnetic levitation system is improved as a whole. Moreover, the technical solution of the present invention does not use the AC synchronous linear motor technology used in the traditional magnetic suspension system in the prior art, but uses a method similar to the basic principle of the DC linear motor and the high temperature superconducting magnetic suspension. The new driving method of maglev vehicle traction is realized, so there is no need to lay coils along the track or set up additional propulsion devices, which can significantly reduce the engineering cost of the high-temperature superconducting maglev system and save costs.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall include within the scope of protection of the present invention.

Claims (6)

1. A propulsion device for a magnetic levitation vehicle, the propulsion device comprising: a connecting device and a coil;

the top of the connecting device is connected with the bottom of a bogie arranged below the vehicle body;

the coil is connected with the bottom of the connecting device; the coil is arranged right above the permanent magnet track.

2. The propulsion device of claim 1, wherein:

the permanent magnet track is installed on the concrete structure through the track buttress.

3. The propulsion device of claim 1, wherein:

the connecting device and the coil are arranged on the bogie above the permanent magnet track side by side with the high-temperature superconducting suspension device.

4. The propulsion device of claim 1, wherein:

when the section of the permanent magnet track comprises 4 permanent magnets, and the magnetization directions of the permanent magnets from left to right are right, upward and leftward respectively, the coil is rectangular, and the bottom of the coil is positioned right above the two permanent magnets in the middle; the direction of the current in the coil is counter-clockwise or clockwise.

5. The propulsion device of claim 1, wherein:

when the section of the permanent magnet track comprises 4 permanent magnets, and the magnetization directions of the permanent magnets from left to right are upward, downward and downward respectively, the coil is in the shape of two connected rectangles, wherein the bottom of one rectangle is positioned right above the two permanent magnets on the left, and the bottom of the other rectangle is positioned right above the two permanent magnets on the right; the current flow in the two rectangles is in opposite directions.

6. The propulsion device of claim 1, wherein:

when the section of the permanent magnet track comprises 5 permanent magnets, and the magnetization directions of the permanent magnets from left to right are respectively right, upward, leftward, downward and rightward, the coil is in the shape of two connected rectangles, wherein the bottom of one rectangle is positioned right above the two leftmost permanent magnets, and the bottom of the other rectangle is positioned right above the two rightmost permanent magnets; the current flow in the two rectangles is in opposite directions.

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