JP2000041304A - Track device for magnetic levitation railway - Google Patents

Abstract

(57) [Problem] To provide a levitation coil system for a superconducting magnetic levitation type railway, which is inexpensive and can allow a vehicle to run at frequent frequency. SOLUTION: In a medium-speed levitation traveling section following a wheel traveling section, a levitation coil 7 is disposed not only on a track side wall 5c but also on a track roadbed 5a.
The required levitation force can be obtained to suppress the temperature rise of the coil, and at the same time, the train operation can be made more inexpensive, and the tolerance for the train operation can be increased by increasing the number of trains and shortening the operation interval.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a track device of a superconducting magnetic levitation railway, and more particularly to a superconducting magnet device arranged on a track of a magnetic levitation railway and mounted on a vehicle for the magnetic levitation railway. The present invention relates to a track device of a magnetic levitation railway provided with a levitation coil that levitates the vehicle by interaction.

[0002]

2. Description of the Related Art FIG.
FIG. 10 is a cross-sectional view showing a track device for a magnetically levitated railroad disclosed in Japanese Patent Application Publication No. H10-209, FIG. 10 is a perspective view showing a main part of FIG. 9, and FIG.
FIG. 3 is a diagram showing a schematic plane. 9, 10 and 1
In 1, 1 is a magnetic levitation vehicle, 1 a is a vehicle body forming a part of the vehicle 1, 1 b is a bogie forming a part of the vehicle 1, 2
Is a superconducting magnet device mounted on the cart 1b. The track device includes a low-speed traveling section A in which the vehicle 1 runs at low speed on wheels,
The vehicle 1 has a medium speed running section B in which the vehicle 1 levitates at a medium speed following the low speed wheel running section A, and a high speed running section C in which the vehicle 1 levitates at a high speed following the medium speed running section B. The track device further includes a levitation coil 3, a propulsion coil 4, a track 5, and a levitation coil 6. The track 5 has a track bed 5a, a running path 5b formed on the track bed 5a, and a side wall 5c rising from a side edge of the track bed 5a. The levitation coil 6 is arranged on the side wall 5c of the high-speed running section C. FIG.
Is an enlarged view showing an outline of a cross section of the levitation coil 3, and FIG.
a is a coil conductor, and 3b is an insulator covering the conductor 3a.

The conventional levitation coil 3 is attached to the track side wall 5c as described above. When the vehicle 1 passes in this state, an induced current flows through the conductor 3a of the coil 3 due to the interaction with the opposing superconducting magnet device 2. Occurred and as a result vehicle 1
A levitation force for surfacing can be obtained. The levitation force increases as the speed increases. Usually, the levitation travels in a high speed range of about 100 km / h or more. During this levitation traveling, the temperature of the conductor 3a rises due to the effect of a large levitation current induced in the conductor 3a, but it is necessary to use the conductor 3a at a temperature lower than a certain allowable value due to restrictions on the insulation characteristics and mechanical strength of the insulator 3b. .

[0004]

The conventional levitation coil 3 is arranged as described above. Behind the levitation coil 3, a propulsion coil 4 for propelling the vehicle by interaction with the superconducting magnet device 2 is arranged. Have been. When the levitation coil 3 becomes thicker, the distance between the propulsion coil 4 and the superconducting magnet device 2 increases, and the propulsion performance for propelling the vehicle 1 decreases, so that the thickness of the levitation coil 3 cannot be increased, and the conductor of the levitation coil 3 The cross-sectional dimension of 3a cannot be increased.
In such a state, when the number of times the vehicle travels increases, the conductor 3
R, which is the square root of the root mean square value of each induced current acting on a
There has been a problem that the MS current becomes large, and the temperature of the conductor 3a exceeds the above-mentioned allowable value, making it impossible to endure use.

[0005] The RMS current of the coil conductor 3a becomes larger in the middle speed levitation running section immediately after the start of surfacing because the lower the vehicle passing speed is, the larger the RMS current is. However, the temperature rise of the coil conductor 3a increases. On the other hand, since the RMS current of the conductor 6a of the coil disposed in the higher-speed levitation traveling section becomes smaller than that in the medium-speed levitation traveling section, the temperature rise of the conductor 6a is lower than that of the conductor 3a.

That is, if the conductor dimensions are set in accordance with the coil 3 in the medium-speed levitation traveling section, the conductor dimensions of the coil 6 in the high-speed traveling section become excessive, and the conductive material constituting the conductor and the insulating material constituting the insulator are formed. There was a problem that an extra large amount of material had to be used.

[0007] Further, since the propulsion coil is disposed so as to be pushed outward, the distance between the propulsion coil 4 and the superconducting magnet device 2 is increased, and the propulsion performance is reduced.

Alternatively, if the dimensions of the conductor are set in accordance with the coil 6 in the high-speed traveling section, the conductor temperature rise of the coil in the medium-speed traveling section becomes excessively large. There was a problem that it was necessary to extend the interval or to reduce the number of driving.

[0009]

According to the first aspect of the present invention, a magnetically levitated railway is disposed on a side wall of a track and is connected to a superconducting magnet device mounted on a vehicle for a magnetically levitated railway. The vehicle includes a side wall levitating coil for levitating the vehicle by mutual electromagnetic action and a propulsion coil for propelling the vehicle. The vehicle is levitated at a medium speed following a low speed running section in which the vehicle runs at low speed and a low speed wheel running section. A medium-speed traveling section, and a high-speed traveling section in which the vehicle levitates at high speed following the medium-speed traveling section. According to the present invention, there is provided a track apparatus for a magnetically levitated railway, comprising: a track-floor levitation coil for applying a levitation force to a vehicle by a mutual electromagnetic action between the superconducting magnet device mounted on the vehicle and the vehicle.

According to the second aspect of the present invention, in the magnetic levitation type railroad track device according to the first aspect, the side wall levitation coil connects a coil conductor wound substantially in a mouth shape in an eight shape. A levitation coil, which is a substantially flat coil having a coil formed by covering with an insulator, and a levitation coil is a coil in which a coil conductor wound in a substantially square shape is covered with an insulator. Orbital device is obtained.

According to the third aspect of the present invention, in the track device for a magnetically levitated railway according to the first or second aspect, the low-speed wheel traveling section includes two main lanes and a side lane.
A track apparatus for a magnetically levitated railway, comprising: a first position connecting between main roads and a switching road moving between a second position connecting the main road to a side road. .

According to a fourth aspect of the present invention, in the magnetic levitation type railroad track device according to the third aspect, when the switching travel path is at the first position connecting the main roads, the track floor levitation coil is driven. A magnetic levitation railway, comprising: a driving device that is held below the floor and that holds the roadbed levitation coil to the roadbed surface when the switching travel path is at the second position connecting the main road to the sideline travel path. Orbital device is obtained.

According to the fifth aspect of the present invention, in the magnetic levitation type railroad track device according to the third aspect, the track bed levitation coil is stored at a storage position below the track bed or an operating position substantially at the same height as the surface of the track bed. Operating the driving device to move and hold the roadbed coil to the retracted position when the switching travel path is at the first position connecting the main roads, and the switching travel path travels on the main road. A control device for moving the track floor levitation coil to the operating position when the road is at the second position connecting the road to the side lane, thereby obtaining a track device for a magnetic levitation railway.

According to a sixth aspect of the present invention, in the track device for a magnetically levitated railway according to any one of the fourth and fifth aspects, the track floor levitation coil is connected to the drive device and extends along the track. A track device for a magnetic levitation railway characterized by being provided on a beam is obtained.

According to the levitation coil arrangement of the track device of the magnetic levitation railway according to the present invention, the vehicle is levitated by arranging the roadbed levitation coil in addition to the side wall levitation coil in the medium speed levitation traveling section immediately after the start of the levitation traveling. Since the levitation force can be shared between the side wall levitation coil and the roadbed levitation coil, the current induced in the conductor of each levitation coil can be reduced. For this reason, the RMS current acting on the coil conductor can be reduced, so that the temperature rise of the coil can be suppressed to a small extent, and accordingly, the vehicle operation has a margin such as increasing the number of driving vehicles or shortening the driving interval. It becomes possible to have. Alternatively, since it is possible to reduce the size and weight, it is possible to provide a track device of a magnetic levitation railway equipped with an inexpensive levitation coil system.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 3, a vehicle 1 for a magnetically levitated railway includes a vehicle body 1a, a truck 1b supporting the vehicle body 1a, and a superconducting magnet device 2 mounted on the truck 1b. As shown in FIG. 3, the track device of the magnetically levitated railway according to the present invention in which the vehicle 1 travels has a low speed (0 km / h to about 100 km / h).
h), a low-speed traveling section 31 in which the vehicle runs on wheels, and following the low-speed traveling section 31, the vehicle 1 is driven at a medium speed (about 100 km / h to about 2 km).
00 km / h), a medium-speed traveling section 32 that levitates and travels,
Following the middle speed section 32, the vehicle 1 is driven at high speed (about 200km /
h or more), and a track 5 that can be divided into a high-speed traveling section 33 that levitates and travels. The track 5 has the vehicle 1
5a on which the vehicle travels, and a running path 5b formed on the road bed 5a
And a side wall 5c rising from a side edge of the roadbed 5a.

The track device further includes a side wall levitation coil 3 mounted on the side wall 5c of the track 5 and magnetically levitating the vehicle 1 by a mutual electromagnetic action between the superconducting magnet device 1c mounted on the vehicle 1 and the vehicle. And a propulsion coil 4 for propelling the vehicle 1 along a track 5. Both the side wall levitation coil 3 and the propulsion coil 4 are disposed on the side walls 5c of all the running sections of the track device, that is, the low speed running section 31, the medium speed running section 32 and the high speed running section 33. The side wall floating coil 3 is shown in FIG.
As shown in FIG. 2, a coil is formed by connecting a coil conductor 3a wound in a substantially square shape into an eight shape to form a coil.
It has a substantially flat coil structure covered with. The side wall levitation coil 3 is configured to generate a magnetic interaction force as large as necessary with an appropriate margin to levitate the vehicle 1 traveling at high speed along the track.
However, the vehicle 1 is not necessarily configured to stably magnetically levitate the vehicle 1 to a sufficient height in a traveling section where the vehicle 1 is not driven at a sufficient speed (for example, the low-speed traveling section 31 or the medium-speed traveling section 32).

In the illustrated example, such a side wall levitation coil 3 is provided in both a low-speed traveling section and a medium-speed traveling section. This is, for example, an intermediate station (not shown) in the middle of the track.
If the vehicle 1 is to stop at the intermediate station, the tracks on both sides must be used as a low-speed traveling section and a medium-speed traveling section. In some cases, the speed 1 is not decelerated significantly, and the vehicle is driven with the vehicle running at a high speed or at a medium speed. Therefore, the low speed running section and the medium speed running section in FIG. 3 can be used as a high speed running section. In order to

The track device further includes a number of track floating coils 7 arranged on the track 5a of the track 5 in the middle speed section 32 along the side walls 5c on both sides. The trackbed levitation coil 7 is a coil in which a coil conductor wound in a substantially square shape is covered with an insulator, and although not shown, the trackbed 5a is fixed to the trackbed 5a using appropriate fixing means such as bolts, wedges, spacers, or the like. It is fixed to. The track bed levitation coil 7 is provided only in the medium speed traveling section 32 in the illustrated example, and provides an additional magnetic levitation force to the insufficient and unstable magnetic levitation force caused only by the side wall levitation coil 3 in this section 32. Thus, the vehicle 1 can be stably magnetically levitated to a sufficient height even during medium-speed running.

According to the track device of the present invention, since the side wall levitation coil 3 and the propulsion coil 4 are mounted on the track side wall 5c over the entire traveling section, the superconducting magnet device 2 on the vehicle 1 While the vehicle 1 is propelled by the mutual electromagnetic action, an induced current is generated in the conductor 3a of the side wall levitation coil 3 by the mutual electromagnetic action with the opposing superconducting magnet device 2 on the vehicle 1 when the vehicle 1 passes. As a result, a magnetic levitation force for causing the vehicle 1 to levitate can be obtained. This levitation force is relatively small when the speed of the vehicle 1 is low, for example, 100 km / h or less. Since the levitation force is not large enough for levitation traveling, the wheels of the vehicle 1 must be used. Normally, the levitation force is increased in the middle speed range and high speed range of about 100 km / h or more, and the levitation traveling can be performed.

When the vehicle 1 is traveling in the medium speed traveling section 32, the vehicle speed is not sufficient and the side wall floating coil 3
Levitation force alone makes levitation traveling unstable, but since the bed floor levitation coil 7 is installed on the bed 5a, an additional magnetic effect is generated between the bed floor levitation coil 7 and the superconducting magnet device 2 of the vehicle 1. A sufficient magnetic levitation force can be obtained even when the vehicle 1 is running at medium speed.

When the vehicle 1 moves from the medium-speed running section 32 to the high-speed running section 33, the vehicle speed is sufficient and stable floating traveling can be performed only by the floating force of the side wall floating coil 3.

As described above, according to the embodiment shown in FIGS. 1 to 3, the vehicle 1 is levitated by the mutual electromagnetic action between the superconducting magnet device 1c mounted on the magnetically levitated railway vehicle 1. A side wall levitating coil 3 and a propulsion coil 4 for propelling the vehicle 1 are installed on the side wall 5c over the entire length of the track 5, and a track in a medium speed traveling section 32 in which the vehicle 1 levitates at a medium speed. 5 is provided with a levitation coil 7 that applies levitation force to the vehicle 1 by a mutual electromagnetic action with a superconducting magnet device 1c mounted on the vehicle 1. The side wall levitation coil 3 is a coil conductor 3 wound in a substantially square shape.
a is a substantially flat coil in which a coil formed by connecting a in a figure 8 shape is covered with an insulator 3b, and the track floor levitation coil 7 is a coil conductor 7a wound in a substantially square shape and covered with an insulator 7b. Coil.

Therefore, the side wall levitation coil 3 does not become thick, the distance between the propulsion coil 4 and the superconducting magnet device 2 on the vehicle 1 increases, and the propulsion performance for propelling the vehicle 1 does not decrease. Conductor 3 even if the number of runs increases
R, which is the square root of the root mean square value of each induced current acting on a
The MS current does not increase and the temperature of the conductor 3a does not exceed the above-mentioned allowable value and cannot be used. Also,
For this reason, the temperature rise of the conductor of the coil becomes excessively large, so that it is not necessary to extend the operation interval of the vehicle or reduce the number of vehicles in order to suppress the temperature rise to an allowable value or less.

Embodiment 2 FIG. 4 shows a second embodiment of the present invention, in which 9 is a main traveling path, 10 is a side traveling path, 11 is a branching device for separating the main traveling path 9 from the side traveling path 10, and Denotes the same symbol as that described in the first embodiment.

In this magnetic levitation railway track device, as is apparent from the figure, the low-speed wheel running section 31 has two sections.
Between two main roads 9, a side road 10, and a first position connecting the two main roads 9 and a second position connecting the main road 9 to the side road 10. Switching traveling path 1 that switches the traveling direction of vehicle 1 by moving
1 is provided. In this example, the vehicle 1 that has entered the main lane 9 on the left side in the figure from the lateral lane 10 through the switching lane 11 is placed on the side wall 5c in a medium speed levitating traveling section 32, which is a section where levitating starts. Not only the same side wall levitation coil (not shown) as in the first embodiment described above is provided on the side wall 5c, but also the same floor levitation coil 7 as in the first embodiment is disposed on the road bed 5a. .

Embodiment 3 FIGS. 5 to 7 show a third embodiment of the present invention. For example, FIGS.
The levitation coil 7 shown in FIG. 1 is configured to enter and exit the levitation surface of the medium speed levitation traveling section 32. This embodiment is, for example, as in the embodiment shown in FIG.
Switching traveling in which the low-speed wheel traveling section 31 switches between a first position where the two main roads 9 are connected to each other and a second position where the main road 9 is connected to the side traveling road 10. It is useful to use a track device in which the same section is used as a medium-speed levitation traveling section 32 or a high-speed traveling section as the case may be, such as a track device having the road 11.

In this track device, FIGS. 6 and 7
As shown in the figure, the track floor levitation coil 7 is provided on a movable beam 12 connected to a hydraulic drive device 13 installed on a base frame 14 and extending along the track 5. Other structures are the same as those shown in the first embodiment. Hydraulic drive 13
Is operated as shown in the flowchart of FIG. 5, and when the above-described switching travel path 11 (see FIG. 4) is at the first position connecting the two main roads 9, as shown in FIG. The track bed levitation coil 7 is held at the storage position below the track bed 5. Further, when the switching travel path 11 is at the second position connecting the main road travel path 9 to the sideline travel path 10, the track bed levitation coil 7 is moved to a position substantially at the same height as the surface of the track bed 5, and the operating position there ( 7) is provided with a driving device 13 for holding. The operation of the driving device 13 is controlled by a control device (not shown) that detects the position of the switching travel path 11 and outputs a signal, and stores the roadbed levitation coil when the switching travel path is in the first position. To move the roadbed levitation coil 7 to the operating position when the switching travel path is at the second position.

In the third embodiment, the information of the vehicle traveling on the traveling path is received, and when the vehicle travels only on the traveling path, the movable girder 12 on which the floating coil 7 is disposed is stored below the track 5. (The state shown in FIG. 6). By doing so, it is possible to prevent a force acting as a resistance during high-speed traveling due to the electromagnetic action between the superconducting electromagnet device 2 of the vehicle and the levitation coil 7 during high-speed traveling where levitation force is unnecessary. When the coiled vehicle information indicates that the vehicle is traveling from the side traveling path to the main traveling path, the movable girder 12 on which the floating coil 7 is disposed is moved upward so that the floating coil 7 is raised to the track bed 5a of the track ( FIG. 7). In this position, the levitation coil 7 generates a levitation force with the superconducting electromagnet device 2 of the vehicle, and can compensate for the levitation force that would otherwise be insufficient during low-speed traveling.

Embodiment 4 FIG. 8 shows a fourth embodiment of the present invention.
Is a power converter, 17 is an operating device of the movable girder 12,
Others are the same as the symbols shown in Embodiment 4. In this embodiment, the movable girder 12 is driven by the electric driving device 1.
5 and move up and down via the power conversion device 16 and the girder operating device 17.

[0031]

As the levitation force for levitation of the vehicle is borne by both the levitation coil 3 disposed on the side wall and the levitation coil 7 disposed on the roadbed, the electromagnetic force and induced current generated in the coil disposed on the side wall are reduced. Therefore, the coil thickness caused by the conductor dimensions can be reduced. Therefore, an inexpensive levitation coil system can be provided without impairing the propulsion characteristics acting between the propulsion coil and the superconducting magnet device.

According to the track apparatus of the magnetic levitation type railway of the present invention, even when the number of vehicles departing from the side running road is relatively large, the temperature rise is increased only by the levitation coils arranged on the side walls, so that the first embodiment is used. By arranging the coils also on the roadbed in the same manner as described above, the same effect as in the first embodiment can be obtained.

According to the track device of the magnetic levitation type railway of the present invention, in the case of high-speed levitation traveling, the required levitation force can be obtained only by the levitation coil arranged on the side wall. If the coil is also arranged on the roadbed of the road, a certain levitation force will be received even if the levitation height is large during high-speed levitation traveling. In the case of high-speed running, riding comfort is particularly impaired, so by storing the levitation coil below the track to a place where the superconducting magnet device is not affected, stable running without receiving extra levitation force Can be obtained. In addition, if a levitation coil is additionally arranged in a certain section of the track bed, eddy current loss occurs in these levitation coils due to the influence of the magnetic field of the superconducting magnet device, and acts as a braking force. Since the braking force acts on only a part of the section, the riding comfort of the vehicle is also impaired in this case. In these embodiments, it is possible to improve the energy efficiency without impairing the riding comfort when the vehicle floats and levitates only on the main traveling road, and reduces the eddy current loss acting as the braking force.

[Brief description of the drawings]

FIG. 1 is a sectional view of a track device of a magnetic levitation railway according to the present invention.

FIG. 2 is a perspective view showing a part of the track of FIG. 1;

FIG. 3 is a schematic plan view of a track device of a magnetic levitation railway according to the present invention.

FIG. 4 is a schematic plan view of a track device of a magnetic levitation railway according to a second embodiment of the present invention. Is

FIG. 5 is a flowchart illustrating an operation of a track device of a magnetically levitated railway according to a third embodiment of the present invention.

FIG. 6 is a schematic cross-sectional view showing a state in which a levitation coil of a track apparatus of a magnetic levitation railway according to a third embodiment of the present invention is in an operating position. Is

FIG. 7 is a schematic cross-sectional view showing a state where a levitation coil of a track apparatus of a magnetic levitation type railway according to a third embodiment of the present invention is in a retracted position.

FIG. 8 is a schematic sectional view of a track device of a magnetic levitation railway according to another embodiment of the present invention.

FIG. 9 is a schematic sectional view of a track device of a conventional magnetic levitation railway.

FIG. 10 is a perspective view showing a part of the track device of FIG. 9;

FIG. 11 is a schematic plan view of a track device of a conventional magnetic levitation railway.

FIG. 12 is a schematic sectional view showing a conventional levitation coil.

[Explanation of symbols]

1 Maglev train, 1a body, 1b bogie, 2
Superconducting magnet device, 3 levitation coil, 3a levitation coil conductor, 3b levitation coil insulator, 4 propulsion coil, 5
Track, 5a Track bed, 5b Track track, 5c
Side wall of track, 6 levitation coil, 6a conductor of levitation coil, 7 levitation coil, 9 runways, 10 side runway,
11 branching device, 12 movable girder, 13 hydraulic drive,
14 foundation mount, 15 electric drive, 16 power conversion device, 17 movable girder operation device.

Continued on the front page F term (reference) 2D056 DA01 DB00 5H113 BB03 BB07 CC04 CC08 CD04 CD13 CD14 CD18 DA01 DA02 DA05 DB03 DB08 DB09 DB10 DB14 DB19 DB20 DC03 DC09 DC10 DC14 DC19 DC20 DD02 DD08 GG03

Claims (6)

[Claims] 1. A side-surface levitation coil disposed on a side wall of a track of a maglev railway to levitate the vehicle by a mutual electromagnetic action between the superconducting magnet device mounted on a vehicle for the maglev railway, and A propulsion coil for propelling the vehicle, a low-speed traveling section in which the vehicle runs at low speed on wheels, a medium-speed traveling section in which the vehicle levitates at medium speed following the low-speed wheel traveling section, In a track device of a magnetically levitated railway provided with a high-speed traveling section in which the vehicle levitates at high speed following the high-speed traveling section, the track device is installed on the track bed of the track in the medium-speed traveling section and mounted on the vehicle. A track device for a magnetic levitation railway, comprising: a track floor levitation coil that applies a levitation force to the vehicle by a mutual electromagnetic action between the superconducting magnet device and the superconducting magnet device. 2. The side wall levitation coil is a substantially flat coil formed by covering a coil formed by winding a coil conductor wound in a substantially square shape into an eight shape and covering the coil with an insulator. The track device for a magnetically levitated railway according to claim 1, wherein the coil device is a coil in which a coil conductor wound in a substantially square shape is covered with an insulator. 3. The low-speed wheel running section includes two main roads, a side lane, a first position connecting the main lane, and a second position connecting the main lane to the side lane. The track device for a magnetically levitated railway according to claim 1, further comprising a switching travel path that moves between positions. 4. When the switching travel path is at the first position connecting the main road travel paths, the track floor levitation coil is held below the road floor, and the switching travel path connects the main road travel path to the main road travel path. The track device according to claim 3, further comprising a driving device that holds the track-floating coil on the track surface when the vehicle is at the second position connected to the side lane. 5. A driving device for moving and holding the roadbed levitation coil to a storage position below the roadbed or an operation position having substantially the same height as the surface of the roadbed, and activating the driving device, When the switching travel path is at the first position connecting the main road travel paths, the roadbed levitation coil is moved to the storage position, and the switching travel path connects the main road travel path to the sideline travel path. 4. The magnetic levitation railway track device according to claim 3, further comprising: a control device that moves the trackbed levitation coil to the operation position when the hill is in the two positions. 6. The magnetic levitation according to claim 4, wherein the trackbed levitation coil is provided on a movable beam connected to the driving device and extending along the track. Railroad track system.