JPS6032409B2 - magnetic levitation vehicle device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetic shielding device for shielding magnetic flux leakage in the cabin of a superconducting magnetically levitated vehicle.

FIG. 1 is a cross-sectional view showing the main parts of a conventional superconducting magnetic levitation vehicle system of this kind, in which 1 is the vehicle body, 2 is the entire vehicle body composing this vehicle body 1, and 3 is the magnetic field installed on the floor of the vehicle body 1. A shield plate, 4 is an underframe, 5 is a buffer spring that connects the underframe 4 and the vehicle body 2 in a cushioning manner, and 6 is a conventionally well-known superconducting magnet disposed at a predetermined position within the underframe 4. ,7
is a superconducting coil 8 for vehicle body propulsion/guidance built into a predetermined position within the superconducting magnet 6, for example, on both side surfaces.
9 is a superconducting coil for vehicle body levitation built into a predetermined position in the superconducting magnet 6, for example, the bottom part, and 9 is a propulsion/guidance coil placed on the ground 11 in correspondence with the propulsion/guidance superconducting coil 7 with a predetermined gap. A track coil 10 corresponds to the superconducting coil 8 for vehicle body levitation with a predetermined gap, and a track coil 12 for vehicle body levitation disposed on the ground 11 is generated by energizing both the superconducting coils 7 and 8. Lines of magnetic force 13 indicate a portion of the flow of magnetic flux, and numeral 13 is a passenger compartment within the vehicle body 1'.

Next, FIG. 2 shows the arrangement of only the superconducting coils 7 and 8 explained in FIG.
In FIG. 2, the arrow x direction indicates the traveling direction of the magnetically levitated vehicle device, that is, the vehicle body 1, and the arrow y direction indicates the width direction of the vehicle body 1.
Further, the arrow z direction indicates the vertical direction of the vehicle body 1, respectively.

Further, in FIG. 2, the arrows shown on each of the superconducting coils 7 and 8 indicate the direction of current flowing through each superconducting coil 7 and 8. The superconducting coil 7 for vehicle propulsion and guidance, and the track coil 9 for vehicle propulsion and guidance.
Due to the electromagnetic interaction between the vehicle body 1 and the underframe 4, the vehicle body 1 is propelled and guided in a non-contact state, and the electromagnetic interaction between the vehicle body levitation superconducting coil 8 and the vehicle body levitation track coil 10 is Due to the interaction, the vehicle body 1 is floated integrally with the underframe 4 in a non-contact state. As described above, the two superconducting coils 7 and 8 for floating, guiding and propelling the vehicle body 1 in a non-contact state are usually formed in an air-core shape, and their supermagnetic force is generally 200 mm. ~60
Since it is extremely large at 0 KAT, it generates a strong magnetic field over a very wide range, and inevitably creates a strong magnetic field within the cabin 13 as well.

As described above, the influence of the magnetic field generated in the passenger compartment 13 of the magnetic levitation vehicle system by both superconducting coils 7 and 8 on the human body is currently unknown, but common sense suggests that the human body is normally less than 1 Gauss It is considered that the magnetic field in the cabin 13 of the car body 1 should be shielded due to the fact that we live in the geomagnetism of ing. The magnetic shield plate 3 in the conventional superconducting magnetically levitated vehicle system (FIG. 1) described above has a superconducting coil 7, as is clear from the lines of magnetic force 12 generated by both the superconducting coils 7 and 8.
, 8, the magnetic flux that attempts to enter the passenger compartment 13 is sent out through the magnetic shield plate 3, and the magnetic field within the passenger compartment 13 is shielded.

However, as shown in FIG. 3, the conventional magnetic shielding plate 3 described above is made of a ferromagnetic material such as an iron plate, and is formed of a flat plate with a thickness of several times.
If the size of the car body 1 is, for example, the same as that of the current Sanyo Shinkansen vehicle, the thickness of the magnetic shield plate 3 is about 5 skin/skin, and the material is iron plate, then the weight of the magnetic shield plate 3 is 1
Considering that the total weight of the magnetic levitation vehicle system is about 30 tons per vehicle, the weight of the magnetic shield plate 3 is relatively small compared to the entire vehicle weight. Incidentally, the weight of this magnetic shield plate 3 is equivalent to approximately 60 guests, and the secondary magnetic shield plate 3 described above is itself extremely heavy, expensive, and unused. There are economic disadvantages.

This invention was made with attention to this point, and the magnetic shield plate is configured not in a flat plate shape but in a lattice shape to reduce its own weight and to give the magnetic shield plate the function of the vehicle body. As a result, the present invention aims to provide a magnetic levitation vehicle device that reduces the weight of the entire vehicle body.

That is, FIG. 4 is a perspective view showing a magnetic shield plate according to an embodiment of the present invention, and 31 is a magnetic shield plate, and this magnetic shield plate 31 has a through hole 31a punched by press working, for example, and a grid. A portion 31b is formed,
Among the magnetic fluxes generated by both superconducting coils 7 and 8, the magnetic flux directed toward the passenger compartment 13 is concentrated on the lattice portion 31b of the magnetic shield plate 31 and does not enter the passenger compartment 13.

In other words, in order to pass the magnetic flux directed toward the passenger compartment 13 through the magnetic flux shield plate 31, it is necessary to use the secondary magnetic flux shield plate (Fig. 3) as well as the magnetic shield plate of the present invention (Fig. 4). However, the amount of ferromagnetic material required remains almost the same. That is, the amount of ferromagnetic material is required to be sufficient to prevent the magnetic shield plate from being saturated even if the magnetic flux directed into the passenger compartment 13 in the vehicle body 1 is passed through the magnetic shield plate. Magnetic shield plate 31 in the superconducting magnetic levitation vehicle device of this invention
As mentioned above, since the through hole 31a is formed,
Although the thickness of the lattice portion 31b is thicker than that of the conventional magnetic shield plate 3, the rigidity of the magnetic shield plate 31 of the present invention is improved compared to that of the conventional magnetic shield plate 3. The shield plate 31 can also be used as a part of the fuselage 2 of the vehicle body 1.

Therefore, as shown in FIG. 5, by using the magnetic shield plate 31 of the present invention also as the floor of the vehicle transverse body 2, the floor of the passenger compartment 13 of the vehicle body 2 can be omitted. This has the excellent effect of reducing the weight of the vehicle body 1 by the weight of the omitted floor space of the vehicle body 2. Note that FIG. 6 shows a magnetic shield plate 31 according to another embodiment of the present invention, in which the width dimensions of the grid portions 31b are different. This is the width dimension “W” of the grid portion 31b in the traveling direction (x direction) of the vehicle body 1.
The width dimension "Wx" of the lattice portion 31b in the direction orthogonal to the traveling direction x of the vehicle body 1 is made wider than "y". The reason for this is as follows. That is, as shown in FIG. 2, since both the superconducting coils 7 and 8 have an elongated shape with respect to the traveling direction (x direction) of the vehicle body 1, the magnetic flux generated by the superconducting coils 7 and 8 is mainly the magnetic flux in the direction (y direction) perpendicular to the traveling direction of the vehicle body 1, and the magnetic flux in the traveling direction (x direction) of the vehicle body 1 is small.
Therefore, out of the magnetic flux passing through the magnetic shield plate 31, the magnetic flux in the traveling direction (x direction) of the vehicle body 1 is larger than that in the vehicle body 1.
This is because the magnetic flux in the direction (y direction) perpendicular to the traveling direction of is larger. Further, FIG. 7 shows a magnetic shield plate 31 according to still another embodiment of the present invention, which is used for the vehicle body for the same reason as the other embodiment of the invention shown in FIG. The cross-sectional area of the lattice part 31 & in the direction perpendicular to the traveling direction of the vehicle body 1 (y direction) is made larger than the cross-sectional area of the lattice part 310 in the traveling direction of the vehicle body 1 (x direction). , the effect is completely the same as that of the above-mentioned embodiment, but the lattice parts 310, 31
The shape of the cross section of Q is not limited to the rectangular shape shown in FIG. Needless to say, this further improves the rigidity of the magnetic shield plate.

Furthermore, FIGS. 8 to 10 show still another embodiment of the present invention, in which the magnetic shield plate 31 is
As shown in FIG. 5, not only the floor surface of the vehicle body 1 but also the green magnetic shield side plates 31A on both sides of this magnetic shield plate 31 are integrally provided to prevent magnetic flux passing near the side surfaces of the passenger compartment 13 inside the vehicle body 1. This is intended to further improve the magnetic shielding effect in this type of superconducting magnetically levitated vehicle device by shielding.

[Brief explanation of the drawing]

Figures 1 to 3 show the secondary magnetic levitation vehicle system. Figure 1 is a sectional view of the vehicle body including the underframe, and Figure 2 is a superconducting coil for vehicle propulsion and guidance, and a superconducting coil for vehicle levitation. FIG. 3 is a perspective view showing a conventional magnetic shield plate. 4 and 5 both show one embodiment of the present invention, FIG. 4 is a perspective view showing the magnetic shield plate of the present invention, and FIG. 5 is a car body equipped with the magnetic shield plate of the present invention. 6, 7, and 8 to 10.
All figures are perspective views showing other embodiments of the invention.
In the drawing, 1 is a vehicle body, 4 is an underframe, 7 is a superconducting coil for vehicle propulsion/guidance, 8 is a superconducting coil for vehicle levitation, 31 is a magnetic shield plate, 31a is a through hole portion, 31b is a lattice portion, 31A
is the magnetic shield side plate. Note that the same reference numerals in the figures indicate the same or corresponding parts. 1st
Figure 3 Figure 9 Figure 2/Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 10

Claims (1)

[Scope of Claims] 1. A magnetic shield plate disposed on the floor of the car body that is integrated with the underframe on which the superconducting coils for car body propulsion/guidance and the superconducting coils for car body levitation are mounted has a through hole and A magnetic levitation device characterized in that each grid portion is formed such that a cross-sectional area in a direction perpendicular to the traveling direction of the vehicle body is larger than a cross-sectional area in the traveling direction of the vehicle body. Vehicle equipment. 2. The magnetic levitation vehicle device according to claim 1, wherein the magnetic shield plate is a magnetic shield plate integrally formed with a magnetic shield side plate that shields a side surface of the passenger compartment of the vehicle body.