JP2946062B2 - Magnetic levitation vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic levitation vehicle in which a vehicle body is levitated by utilizing a repulsive force of a magnet among railway vehicles.

[0002]

2. Description of the Related Art In a magnetic levitation vehicle in which a vehicle body is levitated by using a repulsive force of a magnet, electromagnetic coils for receiving a floating force and a propulsion guide force are mounted on both sides of the vehicle body. Since the levitation and propulsion guidance coils are discretely arranged on the guideway on the ground, the levitation force and the propulsion guidance force received by the train are oscillatory. In particular, no measures have been taken against yaw of the vehicle body.

As means for maintaining the stability of a magnetic levitation train during running, Japanese Patent Application Laid-Open No. 57-26042 and Japanese Patent Application Laid-Open
There is an example described in Japanese Patent No. 22956. The configuration in this example is
A vent hole for air is provided on the outer wall of the body of the leading car, and a boundary layer is created around the outer wall of the body with the air blown out from this hole, so that the frictional effect of the external air flow does not directly affect the car body, This achieves straight running stability.

Japanese Patent Laid-Open Publication No. Sho 4 discloses a technique in which high-pressure fluid is injected from the side of a guideway toward a train to stabilize the train.
There is also an example described in JP-A-8-58514.

[0005]

However, trains provided with such fumaroles have the following problems. In order to wrap all the trains in the boundary layer, it is necessary to provide blast holes around the outer periphery of the vehicle body, and the internal structure becomes complicated. Also,
In this example, a compressor for generating a jet flow is mounted inside the vehicle body, but it has a considerable weight and occupies a considerable space.

The method of injecting high-pressure fluid from a guideway to a running train requires a device for generating high-pressure fluid and a pipe or the like for passing the fluid inside the guideway for several hundred kilometers. Requires considerable construction costs.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a magnetic levitation system capable of maintaining the running stability of a vehicle without installing a large-scale device in the vehicle.
It is to provide an upper vehicle .

[0008]

SUMMARY OF THE INVENTION To achieve the above object, the present invention provides a vehicle-mounted coil provided in a vehicle, which generates a magnetic field by passing an electric current to the vehicle-mounted coil and a track installed on a track. the magnetic levitation vehicle for floating said vehicle by generating a repulsive force between the first side coil, traveling direction of the vehicle
The suction port is opened toward the
An air intake portion into which external air naturally enters from an intake port, and an air exhaust portion that ejects the air that has entered the air intake portion toward both side walls of the track are provided.
A magnetic levitation vehicle characterized in that the attitude of the vehicle is controlled by a reaction force when air is blown out .

[0009] In the magnetic levitation vehicle, the air intake portion is provided on the front lower surface and / or lower the lower surface of the traveling direction of the vehicle, the suction port toward the traveling direction that is opened. Here, it is preferable that each of the air suction portions is provided with an open suction port on each of the front and rear sides in the vehicle traveling direction, and is formed so as to be individually openable and closable. Further, it is preferable that the air suction section is provided with suction amount adjusting means for adjusting the suction amount.
Further, it is preferable that the suction port of the air suction section is formed so as to be variably oriented so as to open in the traveling direction. Further, it is preferable to provide an air compression means for compressing and discharging the air sucked from the air suction section.

In the above-mentioned magnetic levitation vehicle , the air discharge
The outlets of the outlets are preferably provided in pairs on the left and right sides of the front and rear portions of the vehicle. Here, the discharge port may be formed so as to open in a direction perpendicular to the traveling direction of the vehicle or obliquely rearward, or may be formed to have a variable direction.

In the magnetic levitation vehicle , a sensor for measuring a distance between the vehicle and a side wall of the track, and an arithmetic processing unit for performing an arithmetic process for correcting the vehicle's roll by the sensor,
It is preferable to provide an injection amount varying means for controlling the attitude of the vehicle by changing the amount of air injected from each outlet based on the calculation processing value. Here, the sensor is preferably a laser displacement meter.

[0012]

According to the present invention, when the magnetically levitated vehicle starts running, air is taken into the vehicle body from the air suction portion mounted on the outer surface of the vehicle body. Then, the air whose pressure has been increased inside is jetted out of the vehicle body from the outlet of the air outlet. At this time, if the air is blown out toward the guideway side wall portion, the reaction force causes a lateral force perpendicular to the traveling direction to be applied to the vehicle body. If the amount of air to be blown can be changed, the force applied to the vehicle body can be changed. Further, if the direction of the jetted air flow can be changed, the direction of the force applied to the vehicle body can be changed.

Further, according to the present invention, the roll amount of the air is changed so that the roll of the vehicle body is detected and corrected. The sensor measures the distance between the side of the vehicle body and the side wall of the guideway at all times during the running of the train, and processes the data. Then, with respect to the roll of the vehicle body, the amount of air to be injected from which outlet should be calculated, the injection amount is changed, and the magnitude and direction of the force applied to the vehicle body are changed.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. (First Embodiment) FIG. 1 is a schematic side view of the top car of superconducting magnetic levitation trains that by the present embodiment. FIG. 2 is a perspective view of the same. FIG. 3 is a detailed view of the part A in FIG.

A superconducting magnet 2 is mounted on the vehicle body 1 on the left and right sides of the front and rear portions of each vehicle. On the lower surface of the vehicle body 1, an air intake duct 3 is attached to a front part and a rear part. Then, the traveling air is drawn into the suction duct 3 from the front. The inhaled air is turned inside the vehicle body 1 and blows out of the vehicle through the outlet 4. As the train runs at a higher speed, the air taken in from the suction duct 3 increases, and in this embodiment, the buffer tank 5
Compressed. Note that the buffer tank 5 may not be provided.
Here, the air with increased pressure is injected from the outlet 4,
As a reaction at that time, a lateral force acts on the vehicle body 1 in the traveling direction. By providing the outlets 4 on the left and right side surfaces of the front and rear portions of the vehicle body 1, the lateral moment acting on the vehicle body 1 can be maximized with a small ejection amount. By applying a lateral force to the vehicle body 1 at all times, it is possible to prevent the vehicle body 1 from easily rolling while traveling. Note that the train is traveling in both directions.
Instead, as shown in FIG. 4, air inlet ducts 3 are provided on the front and rear sides 3a, 3b so that the entrances can be individually opened and closed, so that when the traveling direction of the train changes, It is only necessary to change the open / close state, which is convenient.

(Second Embodiment) Hereinafter, a second embodiment of the present invention will be described with reference to FIGS. 5, 6, and 7. FIG. 5 is a top view showing the internal structure of the present embodiment, FIG. 6 is a front view of FIG. 5, and FIG. 7 is an operation explanatory diagram of the present embodiment.

In FIG. 5, a plurality of blades 6 are provided at the air intake of the suction duct 3. The wing 6 is rotatably attached to the suction duct 3 by a shaft 7. The sum of the lengths of the wings 6 is slightly smaller than the length of the opening of the suction duct 3. An arm 8 is fixed to an upper portion of the shaft 7, and a link 9 is rotatably mounted. The link 9 is connected to a servomotor 10. When the servomotor 10 rotates, the arm 8 moves via the link 9 and the wing 6 drives the duct 3 so as to change the opening amount. FIG. 5 shows a state where the opening amount of the duct 3 is maximum, and FIG. 7 shows a state where the opening amount is small.

According to this embodiment, the amount of air intake can be made variable, the amount of air ejected from the outlet 4 can be adjusted, and the force generated on the vehicle body 1 can be changed.

(Third Embodiment) Hereinafter, a third embodiment of the present invention will be described with reference to FIGS. FIG. 8 is a view showing the internal structure of the discharge port of this embodiment, and FIG.
FIG.

In FIG. 8, a valve 11 is provided inside the outlet 4. Valve 11 is slightly smaller than the internal dimensions of outlet 4. And it is freely rotatable by the shaft 12. An arm 13 is fixed to the upper part of the shaft 12,
It is connected to a servomotor 15 via a link 14. FIG. 8 shows an example in which the opening amount of the discharge port 4 is maximized. In the example shown in FIG. 8, the discharge port 4 is closed by the valve 11 by moving the arm 13 by the servomotor 15 and the ejection is stopped. 9

According to this example, the amount of air blown out can be made variable, and the force generated on the vehicle body 1 can be changed.

(Fourth Embodiment) FIG. 10 shows a fourth embodiment of the present invention. This embodiment is an example in which the outlet 4 is directed at right angles to the guideway 16. By doing so, a strong guiding force acts on the vehicle body 1 in the left-right direction, and the vehicle 1 is less likely to roll.

(Fifth Embodiment) FIG. 11 shows a fifth embodiment of the present invention. This example is
In this example, the outlet 4 is directed obliquely rearward with respect to the guideway 16. By doing so, the lateral force acting on the vehicle body 1 can be reduced, the resistance during traveling can be reduced, and the vehicle does not roll easily.

(Sixth Embodiment) FIG. 12 shows a sixth embodiment of the present invention. This example is
This is an example in which the direction of the discharge port 4 is variable. The discharge port 4 is rotatably attached to the buffer tank 5 via a ring 17. The discharge port 4 is provided with a gear 18 around it and can be rotated by a small gear 19 from outside. By driving the servo motor 20, the direction of the outlet 4 can be changed. By doing so, the direction of the force acting on the vehicle body can be changed.

Seventh Embodiment Hereinafter, a seventh embodiment of the present invention will be described with reference to FIGS.
5 will be described. FIG. 13 is a schematic view of this embodiment, and FIG.
4 is a top view, and FIG. 15 is a flowchart relating to operation control.
In FIG. 13, a coil 21 is provided on the guideway 16.

The reflection plate 22 is provided in the longitudinal direction of the guide way 16. Guideway 1 inside car body 1
A laser displacement meter 23 and a calculator 24 for measuring the distance from the control unit 6 are provided, and are connected to the respective emission control devices 25. The operation of this embodiment will be described with reference to FIG. Suppose that the car body turned right for some reason while running the train. The amount of movement of the left and right (Δδ = δ ₂ -δ ₁₎ the laser displacement meter 23, and the arithmetic unit 24 detects. The arithmetic unit 24 further calculates what lateral force should be applied to the vehicle body 1 to cause the vehicle body to go straight. When the vehicle body 1 is facing right, it is calculated that the right and left forces on the front right side and the rear left side of the body 1 are increased. In this way, the discharge amount control device 25 attached to these parts is operated to increase the ejection amount. This operation is continued until the vehicle body goes straight.

FIG. 15 shows a flowchart of the vehicle body attitude control described above. According to this embodiment, for example, in the case of bad weather, even when each vehicle connected to each other is hit by a gust and the vehicle body shakes irregularly, the right and left guiding force of each part of the vehicle body is finely adjusted immediately, and stable traveling is possible. Becomes

(Eighth Embodiment) An eighth embodiment of the present invention will be described below with reference to FIGS. In the present embodiment, instead of using the laser displacement meter 23 to measure the distance between the vehicle body 1 and the guideway 16 in the seventh embodiment, an acceleration sensor 26 for detecting the roll of the vehicle body is provided inside the vehicle. The lateral displacement δ of the vehicle body is known from the acceleration obtained here. According to this method, even if the reflection plate 22 of the guideway 16 has some irregularities, it is possible to prevent the control device 25 from operating finely.

[0029]

As described above, according to the present invention,
Since the guide force in the left-right direction during traveling of the magnetic levitation train can be increased, the vehicle can be prevented from rolling.

Furthermore, since the distance from the guideway can be measured by a sensor provided in the vehicle body and the amount of the jet can be changed in accordance with the distance, irregular posture fluctuations of each running vehicle can be independently stabilized. Can be

[Brief description of the drawings]

1 is a schematic side view of the top car engagement Ru superconducting magnetic levitation train present invention.

FIG. 2 is a perspective view of FIG.

FIG. 3 is a detailed perspective view of a portion A in FIG. 1;

FIG. 4 is a perspective view of another embodiment corresponding to FIG.

FIG. 5 is a top view of the internal structure of another embodiment of the present invention.

FIG. 6 is a front view of FIG. 5;

FIG. 7 is an operation explanatory diagram of FIG. 5;

FIG. 8 is an internal structural view of a discharge port according to an embodiment of the present invention.

FIG. 9 is an operation explanatory diagram of FIG. 8;

FIG. 10 is a top view of one embodiment of the present invention.

FIG. 11 is an operation explanatory top view of another embodiment of the present invention.

FIG. 12 is a schematic perspective view of another embodiment of the present invention.

FIG. 13 is a schematic perspective view of another embodiment of the present invention.

FIG. 14 is a top view for explaining the operation of FIG.

FIG. 15 is a flowchart of FIG.

FIG. 16 is a schematic perspective view of a guideway according to another embodiment of the present invention.

FIG. 17 is a flowchart of the control in FIG. 16;

[Explanation of symbols]

 3 suction duct 4 discharge port 16 guideway side wall 23 laser displacement meter

Claims (1)

(57) [Claims] An electric current is applied to a vehicle-side coil provided in a vehicle to generate a magnetic field, and a repulsive force is generated between the vehicle-side coil and a track-side coil installed on a track to cause the vehicle to move. In a magnetically levitated vehicle to be levitated , an inlet is provided in the traveling direction of the vehicle, and
An air intake section through which external air naturally enters from the intake port by the line, and an air exhaust section that ejects the air entering the air intake section toward both side walls of the track.
The appearance of the vehicle due to the reaction force when air is blown out from the air exhaust part
A magnetic levitation vehicle characterized by performing power control .