JPH078081B2 - Ground coil for magnetically levitated vehicle and laying method thereof - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ground coil for a magnetically levitated vehicle, and in particular, the structure of the ground coil and the continuous laying of ground coils arranged in slightly different shapes. Regarding the method.

(Prior Art) Conventionally, as a technology in such a field, for example, the following technology has been available.

Hereinafter, an induction repulsion type magnetic levitation railway using a superconducting magnet as a magnet of a traveling levitation body will be described as an example.

FIG. 8 is a sectional view of a conventional induction repulsive magnetic levitation railway,
8 is a circuit diagram showing the circuit configuration of the propulsion ground coil and levitation of FIG. 8, and the guidance ground coil. FIG. 10 is a circuit diagram for explaining the levitation action of the levitation and guidance ground coil of FIG. First
FIG. 11 is a circuit diagram for explaining the guiding action of the floating and guiding ground coil shown in FIG.

In these figures, 8 and 8 ′ are propulsion ground coils which are arranged to face both inner side walls of the U-shaped track 4 and which are arranged at regular intervals in the vehicle traveling direction. As shown in FIG. 9, a propulsion power supply 14 of three phases (a multiphase other than three phases may be used) is connected to 8, 8 '.

In FIG. 9, the ground coil 8'for propulsion arranged on the side wall on the front side is not shown, but it is actually arranged in the same manner as the ground coil 8 for propulsion, and the power supply 14 for propulsion is connected. ing. 9,9 'are levitation and guiding ground coils arranged on the superconducting coil 1,1' side of the propulsion ground coils 8,8 ', facing each other and continuously at a predetermined interval in the vehicle traveling direction. It is arranged in a way. This levitation, the structure of the guide ground coil 9, 9 ', the rectangular upper coil 10 and the lower coil 11 of the same shape and the same size, and the rectangular upper coil 10' and the lower coil 11 'are null flux connected,
In addition, the opposing levitation and guiding ground coils 9 and 9'are null-flux connected via connecting lines 12 and 13.

Therefore, when the vehicle 3 is landing via the auxiliary wheels 7, 7 ', the vertical center of the superconducting coils 1, 1', the levitation, the vertical center of the guide ground coils 9, 9 ', and the propulsion ground coils.
The vertical centers of 8,8 'are set on the same horizontal line. The upper and lower coils 10 and 10 'and the lower coils 11 and 11' of the floating and guiding ground coils 9 and 9'are arranged vertically symmetrically about a predetermined point on the horizontal line.

In such a configuration, when the propulsion power supply 14 is turned on, a current flows in the same direction in the propulsion ground coil 8 as shown in FIG. 9, and a propulsive force is generated at each vertical side portion.

Also, when the vehicle 3 is traveling on wheels via the auxiliary vehicles 7, 7 ', the superconducting coils 1, 1'are levitated, and the guide ground coil 9,
The positional relationship with 9'is set as described above. At this time, the upper coil 10, the lower coil 11, and the upper coil 1
Since the 0'and the lower coil 11 'are null flux connected, the interlinkage magnetic flux of the levitation and guiding ground coils 9,9' is 0,
The current is zero and the electromagnetic running resistance is zero.

On the other hand, during levitation traveling with the auxiliary wheels 7, 7 ′ of the vehicle 3 retracted, the vertical center of the superconducting coils 1, 1 ′ moves downward from the center of the levitation and guiding ground coils 9, 9 ′. The upper coil 10, the lower coil 11, and the upper coil 1
There is a difference in the magnetic flux that links between 0'and the lower coil 11 '. At this time, a current as shown in FIG. 10 is induced in the upper coil 10, the lower coil 11, and the upper coil 10 ', the lower coil 11', and the horizontal sides 10a, 1'of the upper coil 10, 10 'are induced.
A suction force acts between 0'a and the upper horizontal sides of the superconducting coils 1,1 ', and the horizontal sides 11a, 11'a of the lower coils 11,11' and the lower horizontal sides of the superconducting coils 1,1 'are connected. Repulsion works between them. Due to the repulsive force and the attractive force, a levitation force for returning the superconducting coils 1, 1'to the upper side is generated, and the superconducting coils 1, 1'are stabilized at a position balanced with the weight of the vehicle 3. In this case, since the upper coil 10 and the lower coil 11 and the upper coil 10 'and the lower coil 11' effectively generate a levitation force with a small current, the electromagnetic running resistance can be small.

Further, when the vehicle 3 is located at the center of the trackway 4, the superconducting coils 1,1 'are arranged symmetrically with respect to the longitudinal centerline of the trackway 4, and are opposed to the upper coils 10,10' and Since the lower coils 11 and 11 'are null-flux connected via the connecting wires 12 and 13, even if there is no lateral displacement in the magnetically levitated state of the vehicle 3, the interlinkage magnetic flux does not become 0, but the levitation Since the interlinking magnetic fluxes of the guiding ground coils 9 and 9'are equal, no current flows in the connecting lines 12 and 13. Therefore, no lateral force is generated.

On the other hand, when the vehicle 3 is displaced to the left (in the direction of arrow d in FIG. 11) during levitation, the upper coils 10 and 10 'and the lower coils 11 and 11' are interlinked. If there is a difference in the magnetic flux and the superconducting coils 1, 1'correspond to this, the 11th
An electric current as shown in the figure is levitated and induced in the guiding ground coils 9, 9 ', thereby generating a guiding force for returning the superconducting coils 1, 1'to the center.

That is, the horizontal side 10a of the upper coil 10 and the lower coil 11
Repulsive force acts between the horizontal side 11a of the superconducting coil 1 and the upper horizontal side and the lower horizontal side of the superconducting coil 1, and the horizontal side 10'a of the upper coil 10 'and the horizontal side 11'a of the lower coil 11', A suction force acts between the upper horizontal side and the lower horizontal side of the superconducting coil 1 ', and the superconducting coils 1, 1'are returned to the center. In addition,
In FIG. 8, 2 is a bogie, and 5 and 5 ′ are mechanical guide wheels rotatably pivoted to the other ends of shafts 6 and 6 ′ whose one end is fixed to the vehicle 3, and wheel travel of the vehicle 3 is shown. Sometimes pulled out,
It provides mechanical guidance while rotating along the side wall of the trackway 4.

The above-mentioned prior art has already been proposed by the applicant of the present application as Japanese Patent Application Nos. 63-40726 and 63-12861.

As a second prior art, as shown in FIG. 12 and FIG. 13, superconducting coils 21, 21 ′ are vertically arranged on both side surfaces of a truck 22 and superconducting coils are formed on both side walls of a U-shaped trackway 23. Coil 2
Grounding coils 24 and 24 'for both propulsion and guidance, which are connected to the propulsion power supply 26 opposite to 1,21', are installed, and further, on the surface of the ground coils 24, 24 'for both propulsion and guidance, symmetrical about the center. The levitation ground coils 25, 25 'are installed in the upper and lower two stages so that they are positioned, and the levitation ground coils 25, 25' in the upper and lower two stages.
There has also been proposed an inductive repulsion type magnetic levitation railway constructed by connecting null fluxes in opposite directions to form a closed circuit (see, for example, JP-A-63-167606).

(Problems to be Solved by the Invention) However, as described above, each of the levitation and guiding ground coils 9 and 9 ′ and the levitation ground coils 25 and 25 ′ has a rectangular shape, and is a superconducting coil for vehicles. 1,1 'or 21,2
There is no idea to positively set the restoring force due to the relative displacement between the center of 1 ′ and the center of the levitation / guidance ground coils 9, 9 ′ or the levitation ground coils 25, 25 ′. It was

In view of such a situation, the present invention makes the change amount of the magnetic flux interlinking with the change of the vertical position of the superconducting coil different by the shape above and below the null flux connected center line of the ground coil. It is an object of the present invention to provide a ground coil for a magnetically levitated vehicle and a method of laying the same, which can obtain the restoring force of the above.

(Means for Solving the Problem) (1) Levitating, guiding, and propelling a vehicle, in which superconducting coils are vertically arranged continuously on both side surfaces along the traveling direction of the vehicle at predetermined intervals, along a track path. In the induction repulsion type magnetic levitation railway, the above-mentioned levitation and guidance are provided by forming a closed circuit by connecting two upper and lower coils in opposite directions to each other by null flux connection in opposite directions to form a closed circuit. The dual-use ground coil is line-symmetric with respect to the vertical line, and is configured such that the amount of change in magnetic flux differs in the vertical direction from the null-lux connection point.

(2) In an induction repulsion type magnetic levitation railway system for levitating, guiding, and propelling a vehicle in which superconducting coils are vertically arranged continuously on both side surfaces along the traveling direction of a vehicle along a trackway, A levitation ground coil is provided on both sides of the track, in which two upper and lower coils are null-fluxed in opposite directions to each other to form a closed circuit, and the levitation ground coil is line-symmetric with respect to a vertical line. The amount of change in magnetic flux is different in the vertical direction from the null-lux connection point.

(3) In an induction repulsion type magnetic levitation railway system for levitating, guiding and propelling a vehicle in which superconducting coils are vertically arranged continuously on both side surfaces along the traveling direction of the vehicle along a trackway at a predetermined interval, A levitation / guide / ground coil is formed by forming a closed circuit by connecting the upper and lower two-stage coils in opposite directions to each other by null flux, and providing a levitation / guide / ground coil with respect to the vertical line. Axisymmetric, and configured so that the amount of change in the magnetic flux is different in each of the vertical direction from the null Lux connection point, the levitation with different degrees of the amount of change in the magnetic flux, prepare a ground coil also serving as a guide, the levitation,
The levitation / guide / ground coil is laid by selecting the degree of change in magnetic flux that matches the vertical restoring force of the vehicle required at the laying position of the guide / ground coil.

(4) In an inductive repulsion type magnetic levitation railway system for levitating, guiding and propelling a vehicle in which superconducting coils are vertically arranged continuously on both side surfaces along the traveling direction of the vehicle along a trackway at a predetermined interval, A levitation ground coil is provided, in which null fluxes are connected in opposite directions to upper and lower two-stage coils on opposite sides of the track to form a closed circuit, and the levitation ground coil is line-symmetric with respect to a vertical line. Yes, it is configured such that the amount of change in magnetic flux is different in the vertical direction from the null-lux connection point, and the levitation ground coils with different degrees of change in magnetic flux are prepared, and it is necessary at the laying position of the levitation ground coil. The above-mentioned levitation / guide ground coil is laid so that the degree of change in magnetic flux that matches the vertical restoring force of the vehicle is selected.

(Operation) According to the present invention, as described above, the upper and lower two-stage coils are null-flux-connected in opposite directions to each other on both sides of the raceway,
A levitation / guide / ground coil that forms a closed circuit is provided. The levitation / guide / ground coil is line-symmetric with respect to the vertical line, and the amount of change in magnetic flux is different in the vertical direction from the null Lux connection point. Since it was configured to
The amount of change in the magnetic flux that links with the vertical movement of the vehicle is
It becomes different at the upper and lower sides of the center line of the ground coil to which the null flux is connected, so that the restoring force in the vertical direction of the vehicle can be increased.

Also, by selecting the degree of change in the magnetic flux of the ground coil and laying the ground coil that matches the traveling route conditions of the magnetically levitated vehicle, an appropriate vertical restoring force of the vehicle can be obtained. Track design can be done.

(Example) Hereinafter, the Example of this invention is described in detail, referring drawings.

FIG. 1 is a front view of a ground coil for a magnetically levitated vehicle showing a first embodiment of the present invention, and FIG. 2 is a view for explaining the action of the ground coil for a magnetically levitated vehicle.

In these figures, 30 is a ground coil for levitation and guidance (for example, see 9 and 9'shown in FIGS. 8 to 11).
And is provided on the side surface of the trackway. 31 is an upper coil, and the upper coil 31 is composed of an upper horizontal side 31a, a lower horizontal side 31b, a left side 31c, and a right side 31d, and the upper horizontal side 31a and the lower horizontal side 31b are horizontal centers. It is parallel to the line AA and the upper horizontal side 31a is longer than the lower horizontal side 31b.

Further, the left side edge 31c and the right side edge 31d are inclined with respect to the vertical center line BB. Also, the lower coil 32
Has a shape symmetrical to the upper coil 31 with respect to the horizontal center line AA. That is, it is composed of an upper horizontal side 32b, a lower horizontal side 32a, a left side 32c, and a right side 32d. The upper horizontal side 32b and the lower horizontal side 32a are horizontal center lines A-A.
And the lower horizontal side 32a is parallel to the upper horizontal side 3
It is longer than 2b. The left side 32c and the right side 32d are inclined with respect to the center line BB in the vertical direction. Reference numeral 33 is a null flux connection portion that connects the upper coil 31 and the lower coil 32 with each other.

In addition, the ground coil that also functions as a levitation and guide
Actually, 30 is null-fluxed with a levitation / guide / ground coil which is further arranged to face the side surface of the trackway, but that point is omitted.

With this configuration, as shown in FIG. 2, for example, when the superconducting coil 1 moves from the position indicated by the dotted line to the levitation / guide / ground coil 30 to the position indicated by the solid line, Of the magnetic flux Φ _{1 that} links the upper coil 31, ΔΦ ₁ decreases, and conversely, the magnetic flux Φ ₁ that links the lower coil 32.
The ₂ will be Φ ₂ is increased. So the upper coil
Looking at the change in the magnetic flux interlinking the 31 and the lower coil 32, as compared with the case where the conventional coil is rectangular, the left side 31c,
The amount of change in the interlinking magnetic flux increases as much as 32c and the right side edges 31d, 32d are inclined. Therefore, a larger induced current, which circulates through the null flux connection portion 33, flows through the levitation / guide ground coil, and this induced current causes a restoring force (returning the vehicle to its original position) on the superconducting coil 1. The force to do so) will act.

Here, the left side 31c of the above-mentioned floating and guiding ground coil,
As the inclination angle of 32c and the right side edges 31d, 32d, that is, the side edges are increased, the amount of change in the interlinking magnetic flux Φ is increased, and the restoring force is increased accordingly.

FIG. 3 is a front view showing a modification of the ground coil shown in FIG.

As shown in the figure, in order to increase the above-mentioned restoring force of the vehicle, the inclination angles of the sides of the upper coil 31 'and the lower coil 32' may be increased. In this case, the first
The lower horizontal side 31b and the upper horizontal side 32a shown in the figure are substantially eliminated. In addition, these lower horizontal side 31b and upper horizontal side 3
2b contributes to the generation of the levitation force of the vehicle, but when an induced current flows in the levitation and guidance / ground coil to guide the lateral deflection of the vehicle (see Fig. 11).
In this case, since electric currents in opposite directions flow in the lower horizontal side 31b and the upper horizontal side 32b, the electromagnetic force acting on the superconducting coil 1 is
There was a problem that the guiding force was reduced by canceling each other out. However, according to the present invention, such an action can be reduced by eliminating or shortening the lower horizontal side 31b and the upper horizontal side 32b as described above.
Reference numeral 33 'is a null flux connection portion of the upper coil 31' and the lower coil 32 '.

FIG. 4 is a front view of a ground coil for a magnetically levitated vehicle showing a second embodiment of the present invention.

The ground coil in this embodiment has the same upper coil shape as the ground coil of the first embodiment described above, but has a different lower coil shape. That is, 41 is an upper coil, the upper coil 41 is an upper horizontal side 41a,
Consists of a lower horizontal side 41b, a left side 41c, and a right side 41d,
The upper horizontal side 41a and the lower horizontal side 41b have a horizontal center line A.
It is parallel to -A, and the upper horizontal side 41a is longer than the lower horizontal side 41b. The left side 41c and the right side 41d are inclined with respect to the vertical center line BB.

The lower coil 42 has the same shape as the upper coil 41. That is, it is composed of the upper horizontal side 42a, the lower horizontal side 42b, the left side 42c, and the right side 42d, and the upper horizontal side 42a and the lower horizontal side 42b are parallel to the horizontal center line AA. The upper horizontal side 42a is longer than the lower horizontal side 42b. Further, the left side edge 42c and the right side edge 42d are inclined with respect to the vertical center line BB. In addition, 43 is a null flux connection part which connects the upper coil 41 and the lower coil 42 with null flux.

Also in the case of the ground coil configured in this way, as in the case described above, when the vehicle fluctuates in the vertical direction, it is possible to increase the amount of change in the interlinking magnetic flux, and to restore the vertical movement of the vehicle. You can increase your strength.

FIG. 5 is a front view showing a modification of the ground coil shown in FIG.

As shown in this figure, in this modification, the upper coil 41 'is
Also, the inclination angle of the side of the lower coil 42 'is maximized. Reference numeral 43 'is a null flux connection portion between the upper coil 41' and the lower coil 42 '.

It should be noted that although the levitation and guidance ground coils have been described in the above-described embodiments, these levitation ground coils are the levitation ground coils 2 as shown in FIGS. 12 and 13.
It goes without saying that it can be applied to 5,25 '.
In this case, as shown in FIG. 13, a null flux-connected levitation ground coil is laid independently on each side wall of the trackway.

Next, a method of laying the above-mentioned ground coil will be described with reference to the drawings.

FIG. 6 is a schematic explanatory view of a method of laying a ground coil for a magnetically levitated vehicle of the present invention, and FIG. 7 is a diagram showing a method of laying the ground coil.

As shown in these figures, the propulsion ground coils 52 are arranged on both inner side walls of the U-shaped track 51 of the magnetically levitated vehicle 50, and the above-mentioned levitation and guidance ground coils are laid. In that case, in the vicinity of the departure point A of the station 60 where the magnetically levitated vehicle 50 stops, the speed of the magnetically levitated vehicle 50 is low and the restoring force is small.
And the ground coil with a large inclination angle of the side of the lower coil 72
Select and place 70.

On the other hand, in the vicinity of the point B traveling at a high speed, the magnetically levitated vehicle 50 has a higher speed and its restoring force is larger, so that the ground coil 80 having the upper coil 81 and the lower coil 82 with a small side inclination angle. Deploy. That is, in the travel route of the magnetically levitated vehicle, a levitation / guidance ground coil having a side inclination angle adapted to the ground coil is installed at a place where the restoring force of the ground coil is required on the basis of its speed.

In the above embodiment, the levitation and guide / ground coils are selected and laid on the basis of the speed in the route of the magnetically levitated vehicle, but the terrain in the route of the magnetically levitated vehicle is taken into consideration. You may make it arrange | position. For example, in a place with a lot of ups and downs or near the entrance of a tunnel, it is necessary to increase the restoring force. Therefore, the levitation and guide / ground coil are arranged according to the appropriate restoring force at that point.

The present invention is not limited to the above embodiment,
Various modifications are possible based on the spirit of the present invention, and these are not excluded from the scope of the present invention.

(Effects of the Invention) As described in detail above, according to the present invention, the following effects can be achieved.

(1) By changing the inclination angle of the side of the ground coil, it is possible to obtain ground coils of various shapes having different vertical restoring forces of the vehicle.

(2) By selecting the inclination angle of the side of the ground coil and laying it in accordance with the traveling route conditions of the magnetically levitated vehicle, it is possible to design a track that obtains an appropriate vertical restoring force of the vehicle. . Therefore, stable traveling of the magnetically levitated vehicle can be realized.

[Brief description of drawings]

FIG. 1 is a front view of a ground coil for a magnetically levitated vehicle showing a first embodiment of the present invention, FIG. 2 is a view for explaining the action of the ground coil for a magnetically levitated vehicle, and FIG. 3 is FIG. 4 is a front view showing a modification of the ground coil shown in FIG. 4, FIG. 4 is a front view of a ground coil for a magnetically levitated vehicle showing a second embodiment of the present invention, and FIG. 5 is a modification of the ground coil shown in FIG. FIG. 6 is a front view showing the method of laying the ground coil for a magnetically levitated vehicle of the present invention, FIG. 7 is a view showing the method of laying the ground coil, and FIG. 8 is a conventional induction repulsion type Fig. 9 is a cross-sectional view of the magnetic levitation railway. Fig. 9 is a circuit diagram showing the circuit structure of the ground coil for propulsion and levitation of Fig. 8 and the ground coil for guidance. Fig. 10 is the levitation of Fig. 8 and levitation of the ground coil for guidance. FIG. 11 is a circuit diagram for explaining the action, and FIG. 11 is a diagram for explaining the guiding action of the floating and guiding ground coil in FIG. FIG. 12 is a circuit diagram for this purpose, FIG. 12 is a cross-sectional view of another conventional induction repulsion type magnetic levitation railway, and FIG. 13 is a view showing the arrangement of ground coils of the induction repulsion type magnetic levitation railway. 30,70,80… Ground coil for levitation and guidance, 31,31 ′, 41,4
1 ', 71,81 ... upper coil, 31a, 32b, 41a, 42a ... upper horizontal side, 31b, 32a, 41b, 42b ... lower horizontal side, 31c, 32c, 41c, 42c ...
Left side, 31d, 32d, 41d, 42d ... Right side, 32, 32 ', 42, 4
2 ', 72, 82 ... lower coil, 33,33', 43,43 '... null flux connection, 50 ... magnetically levitated vehicle, 51 ... U-shaped track, 52 ... propulsion ground coil, 60 ... station.

Claims (4)

[Claims] 1. An inductive repulsion type magnetic levitation railway system for levitating, guiding and propelling a vehicle, in which superconducting coils are vertically arranged continuously on both side surfaces along the traveling direction of the vehicle at a predetermined interval, along a track path. In the above, on the both sides of the trackway, upper and lower two-stage coils are connected to each other in null flux in opposite directions to form a closed circuit, and a levitation / guide / ground coil is provided. A ground coil for a magnetically levitated vehicle, which is line-symmetric with respect to the null flux connection point, and is configured such that the amount of change in magnetic flux differs in the vertical direction from the null flux connection point. 2. An inductive repulsion type magnetic levitation railway system for levitating, guiding and propelling a vehicle, in which superconducting coils are vertically arranged continuously on both side surfaces along the traveling direction of the vehicle, at a predetermined interval along a track path. At the both sides of the trackway, upper and lower two-stage coils are connected to each other by null flux in opposite directions, and a levitation ground coil is formed by forming a closed circuit. The levitation ground coil is line-symmetric with respect to a vertical line. And a magnetic levitation vehicle ground coil characterized in that the amount of change in magnetic flux is different in the vertical direction from the null flux connection point. 3. An induction-repulsion type magnetic levitation railway system for levitating, guiding and propelling a vehicle, in which superconducting coils are vertically arranged continuously on both side surfaces along the traveling direction of the vehicle at a predetermined interval, along a track path. In (a), upper and lower two-stage coils are connected on both sides of the trackway in opposite directions to each other by null flux to form a closed circuit, and a levitation / guide / ground coil is provided. The levitation / guide / ground coil is configured so as to be axisymmetric with respect to a vertical line and to have a different amount of change in magnetic flux in the vertical direction from the null flux connection point. The levitation / guide / ground coil is laid by selecting the degree of change of magnetic flux that is prepared and adapted to the vertical restoring force of the vehicle required at the laying position of the levitation / guide / ground coil. Laying methods ground coils for magnetic levitation vehicles, characterized in that. 4. An inductive repulsion type magnetic levitation railway system for levitating, guiding and propelling a vehicle, in which superconducting coils are vertically arranged continuously on both side surfaces along the traveling direction of the vehicle at a predetermined interval, along a track path. In (a), a levitation ground coil is formed by forming a closed circuit by connecting two upper and lower coils in opposite directions to each other in null flux connection on both sides of the trackway. And the above-mentioned levitation ground coil having different degrees of variation in the magnetic flux is provided. A magnetic levitation vehicle characterized in that the above-mentioned levitation / guide / ground coil is laid so that the degree of change in magnetic flux that matches the vertical restoring force of the vehicle required at the laying position of the upper coil is selected. Laying method of land on the coil.