JPH01278602A - Running road structure for magnetic levitation type train - Google Patents

Abstract

PURPOSE:To provide an excellent magnetic shield effect, by a method wherein an amorphous sheet is laid on the inner surface of a guide wall erected along a floor system in a manner to cover the whole of the inner surface. CONSTITUTION:A running road 1 is formed with a floor system 10 being a track bed and guide walls 11 erected along the longitudinal direction of the floor system 10 on both sides of the floor system 10. A track bed part 10a is formed on the floor system 10, and ground coils 12 for levitation are situated on both sides of the track bed part 10a. Further, an amorphous sheet 20 adapted to shield a leak magnetic field and formed in a sheetform manner on the whole such that a flakeform amorphous metal 21 is nipped by two films 22 and 23 is positioned on the inner surface of the guide wall 11 in a manner to cover the whole inner surface of the guide wall 11.

Description

Detailed Description of the Invention "Industrial Application Field" This invention relates to the track structure of magnetically levitated trains, and in particular, the present invention relates to the track structure of magnetically levitated trains. This relates to a shielded running path structure.

``Prior technology'' Magnetic levitation trains, in which the car body (vehicle) is levitated in the air using magnetism and travels along tracks, are currently being researched in various countries as a new high-speed transportation system to replace conventional railways that use wheels and rails. Development is underway. Magnetic levitation trains use the attraction and repulsion between magnetic poles to levitate the car body, and are driven by propulsion means such as linear motors. Recently, superconducting phenomena have been applied to create powerful A so-called linear motor car is on the verge of being put into practical use, with a structure in which a magnetic field is created to keep the car body afloat and propelled by a linear motor.

By the way, the above-mentioned magnetic levitation train has a structure in which the car body is levitated by a strong magnetic force, which creates a high magnetic field and generates a large leakage magnetic field around the tracks, so the magnetism may have an impact on the surrounding environment such as nearby buildings. consideration is required.

Therefore, in such cases, conventionally, a magnetic shield has been applied for the purpose of reducing the leakage magnetic field and protecting the surrounding environment.

Such magnetic shielding has conventionally been achieved using a magnetic material such as soft magnetic iron, and a method of shielding has been implemented by attaching a plate of such magnetic material to a portion that requires magnetic shielding.

``Problem to be solved by the invention'' However, magnetic shielding using such magnetic plates requires a considerable amount of iron, which places a large load on the track and causes considerable damage to the structures that make up the track. There were problems such as the need for reinforcement. There are also problems such as poor workability due to the heavy weight of the shielding material.

This invention effectively solves the problems of the prior art, and aims to provide an excellent magnetic shielding effect, reduce the overall weight, and improve workability. The object of the present invention is to provide a running track structure for a magnetically levitated train that allows for the use of magnetic levitation trains.

``Means for Solving the Problems'' In order to achieve the above object, the present invention provides a roadway that constitutes a track for a car body levitated by magnetic force, and a floor slab that constitutes a track bed and a floor slab that constitutes a track bed. The floor slab is provided with guide walls erected along the floor slab on both sides, and an amorphous sheet formed by sandwiching flaky amorphous metal between films is provided on at least the inner surface of the guide wall. , is characterized in that it is provided so as to cover the entire inner surface of the guide wall.

"Function" According to the running path structure of the present invention, the amorphous sheet provided on the inner surface of the guide wall shields the magnetic field on the running road side and the magnetic field from above the vehicle, and exhibits an excellent magnetic shielding effect.

Moreover, since the amorphous sheet is made by sandwiching amorphous metal, which is a high magnetic permeability material, between films, its light weight improves workability on site and reduces maintenance. Demonstrate the effect that can be achieved well.

"Example" Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing a running path for this magnetically levitated train, and FIG. 2 is a sectional view showing this running path.

In these figures, the one indicated as a whole by the symbol l is this traveling route, and the symbol 2 is this traveling route! This is a train that travels by magnetic levitation above the train.The train 2 has a superconducting coil 4 mounted on a car body frame 2b that supports a car body 2a via an air spring 3.
, auxiliary wheels 5, auxiliary guide wheels 6 and helium refrigerator 7
(See Figure 2).

The running path 1 is composed of a floor slab 10 serving as a track bed, and a pair of left and right guide walls ti erected along the longitudinal direction of the floor slab 10 on both sides of this floor slab IO. .

Said floor slab! A trackbed portion 10a is provided one step higher on the trackbed portion 10a, and ground coils (loop coils in the illustrated example) 12 for levitation are installed on both sides of the trackbed portion 10a.

On the other hand, on the inner surface of the guide walls 11 erected on both sides of the floor slab 10, an amorphous sheet 2o is provided to cover the entire inner surface of the guide wall 11 for the purpose of shielding the leakage magnetic field from the running path 1 side. It is provided.

As shown in FIGS. 3 and 4, this amorphous sheet 20 is made by sandwiching a flaky amorphous metal 21 between two films 22 and 23 to make the entire sheet shape. Non-magnetic reinforcing bar 24
An amorphous sheet 20 is integrated on the surface of the precast concrete slab 24 in which the a is buried, and a waterproof layer 25 is further laminated on the surface of this amorphous sheet 20, in order to improve workability and waterproofness on site. has been done.

Here, as the amorphous metal used for the amorphous sheet 20, for example, a soft magnetic amorphous alloy piece whose main component is cobalt, iron, etc. (for example, a magnetostriction of (-10 to +
10) A cobalt-based amorphous alloy piece with a magnetic permeability of 1000 or more in Although vinyl chloride resin, polyester resin, etc.) are used, it is preferable to use a flame-retardant material (for example, phenol resin) because of the structure used for magnetic shielding on the running track of maglev trains.

When manufacturing such an amorphous sheet 20, amorphous gold 1121 weighed at a predetermined weight according to desired magnetic shielding properties is uniformly dispersed between two films 22.23, and the films 22.23 are fixed. Just do it.

In addition, in order to increase the effect of magnetic rolling, it is sufficient to stack a plurality of amorphous sheets 20, so the amount of amorphous metal can be averaged at the manufacturing stage instead of being made in advance to match the magnetic shielding characteristics of the place to be magnetically shielded. Alternatively, the productivity may be improved. By the way, it is known that a sheet using 0.20 kg/s' of amorphous metal 21 reduces leakage magnetic flux by 60%, so using an amorphous sheet 20 with such shielding properties to create precast concrete. It can also be integrated into the plate 24.

The precast concrete plate 24 to which this amorphous sheet 20 is pasted is formed by forming ordinary concrete into a rectangular shape, and in the illustrated example, the first
As shown in the drawings, a guide wall 11 of a travel path 1 is integrally formed into a plurality of divided parts.

Further, a flange portion 24b is provided on the upper part of this precast concrete slab 24 and projects toward the inside of the precast concrete slab 24 to the construction limit, and an amorphous sheet 20 is also attached to the inner surface of this flange portion 24b to prevent leakage. Consideration has been taken to efficiently shield magnetic flux.

In addition, the floor slab 10 of this precast concrete slab 24
The precast concrete slabs 24 can be attached to each other and the precast concrete slabs 24 can be connected to each other by known means using bolts and nuts or by integrating them through joint materials, but it is possible to Things are chosen.

In addition, for the joints between the precast concrete slabs 24, for example, as shown in FIG.
What is necessary is to attach A to the seam part.

In addition, as shown in FIG. 5, if the amorphous sheet 20 is attached to cover the joining surfaces of the precast concrete slabs 24, when the precast concrete slabs 24 are joined together, the joints will be smoothed as shown in the drawing. Since the end portion of the amorphous sheet 20 is butted against the portion, magnetic leakage from the joint can be shielded.

In addition, a waterproof layer 25 covering the surface of the amorphous sheet 20
In this case, a synthetic resin waterproof sheet or the like may be applied directly to the surface of the amorphous sheet 20, but it is also possible to apply a non-water permeable asphalt waterproofing agent, coating/painting film waterproofing agent, etc. to the surface of the amorphous sheet 20. Furthermore, a waterproof concrete plate may be provided on the surface of the amorphous sheet 20, and the amorphous sheet 20 may be sandwiched between the waterproof concrete plate and the precast concrete plate 24. .

By the way, in order to form the precast concrete slab 24 having the amorphous sheet 20 as described above, the precast concrete slab 2 is formed by molding in a factory or the like in advance.
The amorphous sheet 20 and the waterproof layer 25 may be attached and laminated in this order on the surface of 4 using an adhesive or the like.

In addition, when forming the precast concrete slab 24 in a formwork in advance, the amorphous sheet 20 is placed in the formwork in which it will be formed, the necessary non-magnetic reinforcing bars are placed, and concrete is poured into the formwork. However, it is also possible to adopt a structure in which the amorphous sheet 20 and concrete are attached.

Then, 24 precast concrete slabs equipped with such an amorphous sheet 20 on the inner surface (after being attached to the floor slab 10, as shown in FIGS. A coil 15 is provided,
Furthermore, a guide plate 16 on which the auxiliary guide wheels 6 of the train 2 are grounded
is attached so that the amorphous sheet 20 is not damaged by the auxiliary guide wheel 6.

In addition, in FIG. 2, what is indicated by the symbol 30 is the vehicle body 2.
It is an amorphous sheet pasted on the inner surface of 8. This amorphous sheet 30 performs magnetic shielding inside the vehicle body, and in the illustrated example, the thickness of the amorphous sheet 30 becomes thinner toward the upper surface of the vehicle body 2a, taking into consideration distance attenuation of magnetic force. .

Next, the operation of the running track structure of the magnetically levitated train having the above configuration will be explained.

As shown in FIG. 1, in order to form a running path 1, a precast concrete slab 24 is formed by laminating an amorphous sheet 20 and a waterproof layer 25 in a factory or the like, and then this is used as a floor slab at the site. Install while connecting on O,
Finally, finish the joints and use equipment (loop coils, etc.)
Set up.

The precast concrete slab 24 may be installed by using a known bolt connection method or a means for integrating it through a joint material, and the installation method can be selected arbitrarily depending on the construction situation. Furthermore, the finishing of the joint portion (joint) may be carried out using the means shown in FIGS. 4 and 5 described above.

This work is a simple work of assembling a precast concrete slab 24 with an amorphous sheet 20 on its inner surface using a prefabricated method.In particular, the work of attaching this precast concrete slab 24 to the floor slab 10 allows the amorphous sheet with good magnetic shielding to be assembled. 20 can be attached to the running path l, so that workability on site can be improved.

Moreover, since the weight of the amorphous sheet 20 itself is not large, it does not become troublesome to handle.
It has the advantage that magnetic shielding processing can be performed extremely efficiently.

Especially in terms of the total thickness of the amorphous sheet 20, it is compared to a conventional iron plate (for example, 25 mm)! 15-I
/8 in thickness, and its weight does not increase.

In the running path ■ configured in this way, there is a guide wall l! The structure is such that an amorphous sheet 20 laminated with magnetically permeable metal amorphous gold@21 is uniformly pasted on the inner surface of the It can exhibit excellent magnetic shielding effect without leaking to the surrounding area.

Furthermore, in the embodiment, since the amorphous sheet 20 is also provided on the upper inner surface of the guide wall 11 via the flange portion 24b, there is an advantage that leakage magnetic flux from above the traveling road member can be reliably shielded.

Next, another embodiment of the present invention will be described with reference to FIGS. 6 to 8.

In this embodiment, the guide wall 11 is formed of cast-in-place concrete, and a rectangular magnetic shielding plate 40, which is an integrated amorphous sheet 20 and a precast concrete slab 35, is attached to the inner surface of the guide wall It. It has a structure.

As shown in FIGS. 7 and 8, this magnetic shielding plate 40 includes an amorphous sheet 20 having the above-described structure, and a rectangular shape that supports this amorphous sheet 20 and has non-magnetic reinforcing bars 35a embedded therein. It consists of a precast concrete slab 35 and a waterproof layer 25 that covers the entire upper surface of the amorphous sheet 20, and its joints and attachment methods include various structures as described below. .

That is, FIGS. 9 to 11 show examples of the structure of the magnetic shielding plate 40 used in the embodiment of such a configuration.

The magnetic shielding plate 40A shown in FIG.
is configured to project and be integrated with the guide wall, and when forming the guide wall 11 with cast-in-place concrete, the magnetic shielding plate 40A itself is used as a formwork to form the guide wall 11. It can be integrated into the concrete forming the concrete.

In the illustrated example, an amorphous sheet 2OA cut to an extent that can cover the joint is attached to the joint between the magnetic shielding plates jOA so as to adhere the joint.

On the other hand, the magnetic shielding plate 40B shown in FIG.
It is configured to be fixed via a non-magnetic nut 38 to a non-magnetic anchor bolt 37 protruding from the precast concrete slab 35. Specifically, the non-magnetic anchor bolt 37 is inserted into the precast concrete slab 35. A stepped bolt attachment hole 35b is provided.

In addition, in the illustrated example, the peripheral edge 20 of the amorphous sheet 200
a protrudes from the joint surface of the precast concrete plate 35, and this protrusion 20a allows the magnetic shielding plate 40 to
It is configured so that the joint portion between Bs can be covered.

Also, number 1! The magnetic shielding plate 40C shown in the figure is the guide wall 1
It is configured to be fixed to a non-magnetic insert 39 buried in the precast concrete plate 35 via a non-magnetic bolt 45. Specifically, a non-magnetic joint plate 46 is formed protruding from the end face of the precast concrete slab 35. The magnetic shielding plate 40C is bolted to the insert 39 via the joint plate 46.

In addition, in this illustrated example, the non-magnetic reinforcing bars 35a of the precast concrete plates 35 of the magnetic shielding plates 40C protrude from the joint surface, and the joint material 60 is filled between the magnetic shielding plates 40C. The 40Cs are now integrated.

Incidentally, an amorphous sheet 20A cut to a sufficient extent to sufficiently cover the joint is stuck to the joint of the magnetic shielding plate 40C, as in the case shown in FIG. 9 and the like.

In addition, as described above, if the amorphous sheet 20 is integrated with the precast concrete slab 35 to form a magnetic shielding slab, and this is assembled on site to form the running path 1, its handling is easy. So,
Furthermore, the workability can be improved.

In addition, in this case, the precast concrete version 35
It may be formed of lightweight cellular concrete in addition to ordinary concrete, and such a structure has the advantage of further improving the workability.

Further, the present invention is not limited to the above-described embodiments, and the entire floor slab IO and guide wall LL can be formed into a prefabricated unit. According to such unitization, the amorphous sheet 20 can be installed at a factory, etc., and quality can be improved.

Furthermore, it goes without saying that the amorphous sheet 20 is not limited to being attached to the inner surface of the guide wall 11, but may also be attached to the floor slab IO when the running path is three-dimensional.

In the present invention, non-magnetic material is used for the iron portion of the member where high stress is exerted by the magnetism of the superconducting coil, in consideration of high magnetic fields.

``Effects of the Invention'' As explained above, according to the present invention, in a traveling path that constitutes a track for a car body levitated by magnetic force, a floor slab that constitutes a track bed and a floor slab on both sides of this floor slab are provided. and a guide wall erected along the guide wall, and at least the inner surface of the guide wall is covered with an amorphous sheet made of flaky amorphous metal sandwiched between films and formed into a sheet. With this configuration, the following excellent effects can be achieved.

■ The amorphous sheet installed on the inner surface of the guide wall allows
Since the magnetic field on the running road side and the magnetic field from above the train are shielded, an excellent magnetic shielding effect can be obtained, and an effective and suitable running track for the magnetic levitation train can be provided.

■ Also, since the magnetic shield can be made lighter, it does not place any burden on the structures that make up the running route, and it is possible to significantly reduce costs by eliminating large-scale construction work such as reinforcing the entire structure.

(2) As described above, it is possible to achieve excellent magnetic shielding on the running road side, so there is no need to completely provide magnetic shielding on the vehicle side of the magnetic levitation train, and the weight of the vehicle can be reduced.

[Brief explanation of the drawing]

Figures 1 to 4 are shown to explain one embodiment of the present invention, in which Figure 1 is a perspective view of a running track for a magnetically levitated train, Figure 2 is a sectional view thereof, and Figure 3 is a cross-sectional view thereof. is a perspective view showing a structural example of a precast concrete slab having an amorphous sheet, FIG. 4 is a sectional view of a joint portion thereof, FIG. 5 is a sectional view of another joint portion, and FIGS. Another embodiment is shown, and FIG. 6 is a perspective view of the running path;
Figures 7 and 8 show basic structural examples of the magnetic shielding plate used in this example. Figure 7 is a perspective view, Figure 8 is a sectional view, and Figure 9 is a diagram of the magnetic shielding plate. A sectional view showing another example, FIG. 10 is a sectional view showing another example of the magnetic shielding plate,
FIG. 1 is a sectional view showing yet another example of a magnetic shielding plate. 1...Travel route, 2...Train, 2a...
...Vehicle body, 3...Air spring, 4...
Superconducting coil, 5... Auxiliary wheel, 6...
・Auxiliary guide wheel, 7... Helium refrigerator, 10... Floor slab, IOa... Track bed section, 1
1... Guide wall, 20... Amorphous sheet, 21... Amorphous metal, 22.
23...Film, 24...Precast concrete version, 35.
...Precast concrete version, 25...
...Waterproof layer, 36...Non-magnetic anchor wire, 3
7...Non-magnetic anchor bolt, 39...
...Non-magnetic insert, 40.40A, 40B, 40
C...Magnetic shielding plate, 46...Nonmagnetic joint plate.

Claims (1)

[Claims] A running path that constitutes a track for a car body levitated by magnetic force, comprising a floor slab that constitutes a track bed, and guide walls erected along the floor slab on both sides of the floor slab, and A running track structure for a magnetically levitated train, wherein an amorphous sheet formed by sandwiching flaky amorphous metal between films is provided at least on the inner surface of the guide wall so as to cover the entire inner surface of the guide wall.