JPH0490958A - Superconductive magnetic levitation type railroad using guide way in common to conventional railroad - Google Patents

Abstract

PURPOSE:To eliminate a need for construction of an inherent guide way by causing a wheel during low speed running to form a rigid wheel with a flange and supporting the wheel by a rail installed to the guide way and installed for common use with that for a conventional railroad. CONSTITUTION:In a side wall levitation superconduction magnetic levitation type railroad, a wheel used during low speed running forms a rigid wheel 5 with a flange. Rails 3 for a conventional railroad are installed on a guide way, and low speed running is effected by means of the rails 3 and the rigid wheels 5 with a flange. This constitution eliminates a need for construction of a guide way inherent to the superconductive magnetic levitation type railroad.

Description

[Detailed description of the invention] [Industrial application field] The present invention provides a conventional railway track and a guideway for a superconducting magnetic levitation railway, which facilitates the establishment of a superconducting magnetic levitation railway. Regarding the sharing of

[Prior Art] Superconducting magnetic levitation railways require an auxiliary support and guide device because the levitation guide force is extremely small when running at low speeds. As this auxiliary support and guidance device, rubber tire wheels have been exclusively used in experiments because there is no magnetic influence, there is no risk of derailment even if there is oscillation, and the equipment on the ground is simple. Ta.

[Problems to be solved by the invention] However, in superconducting magnetic levitation railways using rubber tire wheels, a completely new guideway separate from that of conventional railways must be installed, and its reliability may be affected. It takes a lot of time to establish.

In order to solve these problems, the present invention aims to realize a superconducting magnetic levitation railway that shares a guideway with a conventional railway.

Applicable Configuration [Means for Solving the Problems] The configuration of the first invention described above is such that in a superconducting magnetically levitated railway with sidewall levitation, the wheels used during low speed running are rigid wheels with flanges, and these are used as guide wheels. It is a superconducting magnetic levitation railway that shares a guideway with a conventional railway, which is characterized by receiving on a track that is shared with a conventional railway.

In addition, the configuration of the second invention is a superconducting magnetic levitation railway that shares a guideway with the conventional railway of the first invention, and is used for its rigid wheels, its tracks, and their peripheral members. The rigid member is characterized by being a low magnetic or non-magnetic member.

[Function] According to the first invention or the second invention, in a superconducting magnetically levitated railway with side wall levitation, the wheels during low-speed running are rigid wheels with flanges, and these are shared with conventional railways provided on the guideway. Since the superconducting magnetic levitation railway is supported by the same track, it is possible to share the guideway of the superconducting maglev railway with the conventional railway track.

Further, according to the second invention, the rigid member used for the rigid wheel and track of the first invention, and their peripheral members,
Since it is made of a low magnetic or non-magnetic material, it is possible to realize a superconducting magnetic levitation railway that runs well without problems in terms of attractive force or magnetic resistance.

[Examples] In order to further clarify the structure and operation of the present invention as described above, preferred embodiments of the present invention will be described below. However, the present invention is not limited to the following examples in any way, and is to be interpreted as broadly as possible, including matters obvious to those skilled in the art, without departing from the gist of the present invention.

The idea of sharing guideways with conventional railways in magnetic levitation railways first existed in normal magnetic levitation, but since the levitation guide relies on magnetic attraction, it is not possible to use iron rails. This is because it was thought that there would be no negative effects due to the increase in suction power.

On the other hand, in the case of superconducting magnetic levitation, there are examples of conventional railways where a levitation plate is placed next to the rail and a propulsion guide coil envelope is installed within the gauge; There is no mention of the rail and its effect on suction.

In the auxiliary support and guide system for superconducting magnetic levitation railways, flanged rigid wheels that can guide as well as support are used, and these can be supported and guided by rigid rails. Not only can the configuration of the system be simplified, but also conventional railway vehicles can run on these rails, making it possible to share the guideway of the expensive superconducting magnetic levitation railway with the conventional railway track. This will be of great benefit as the guideway will be able to be constructed as a conventional railway for the time being before the construction of a superconducting railway, for which the practical method has not yet been determined.

However, in conventional superconducting magnetic levitation railways in which propulsion guide coils are installed on the side walls and levitation coils are installed on the bottom surface, this rigid rail, the rail fastening device that fixes it, and the sleepers or track slabs underneath it are A levitation coil on the ground is installed in the optimal position for laying rigid parts such as, etc., and ordinary steel cannot be used due to attraction force, and good electrical conductor cannot be used due to magnetic resistance. There was a problem.

Prior to achieving the above objectives, a superconducting magnetic levitation railway with side wall levitation has recently been proposed. The coil was also moved closer to the side wall and further away from the bottom of the guideway. This allows the equipment for auxiliary support and guidance to be freely installed using this space.

Therefore, first, use flanged rigid wheels or sliding shoes for the auxiliary support and guide device, support and guide them with a rigid rail, and then apply low magnetic or non-magnetic materials to the auxiliary support and guide device and the metal parts of the track members below the rails. As an embodiment of the Asahimoto No. 1 invention, we considered to solve the above problem by using a magnetic member (in a superconducting magnetically levitated railway with surface wall levitation, as an auxiliary support and guide device as in conventional railways) Use rigid wheels with flanges and support on treads for guidance, or use sliding shoes that enable support and guidance, and use rigid rails to receive these rigid wheels or sliding shoes and support and guide them. .

Further, as an embodiment of the second invention, the rigid wheels or sliding shoes of the embodiment of the above-mentioned second invention, a rail for receiving any of them, a fastening device for fixing the same, and a sleeper or track slab for supporting them are also provided. etc., in the rigid part of the track member,
Use low magnetic or non-magnetic materials.

The use of flanged wheels, such as those used on conventional railways, for auxiliary support and guide devices has tended to be considered impractical in terms of weight due to the image of conventional railways. However, in addition to significantly reducing the weight of the rolling stock, these wheels are used much less frequently than on conventional railways, so we designed them to be as light as possible by making them thinner than conventional wheels. Furthermore, considering that support and guidance have conventionally been provided separately, it is possible to achieve both support and guidance with only flanged wheels, which can be considered with sufficient practicality. As for the sliding shoes, they are not currently in a condition where they can withstand repeated use on a regular basis, except in emergencies.
If a material with sufficient durability can be obtained in the future, it would be attractive because the structure of the auxiliary support and guide device could be significantly simplified if it was supported by a smooth continuous material such as a rail.

Regarding this method of receiving rigid wheels or sliding shoes on rails, recent superconducting levitation railways have adopted a side wall levitation system, which means that the lower part of the vehicle is completely open, and this part is subject to strong magnetic fields. It is hoped that this will become possible by being largely isolated from the superconducting coils.

In realizing this, there is a problem as to whether a continuous member such as a rail can be used continuously even if it is a low magnetic member. Regarding this point, a reference track made of low magnetic steel (Patent No. 100545
No. 7), the distance from the superconducting coil was 200T+ and its cross-sectional area was 8.13cm, whereas in this case, the distance was 77.5c- at a distance of 1m or more, and the magnetic influence was the square of the distance. Considering that it weakens in inverse proportion to ]/2
5 or less, it is clear that there is no problem at all even when considering the influence of the amount of additional steel such as the rail fastening device.

In addition, regarding the landing of the auxiliary support and guide device on the rail, in the case of sidewall levitation type superconducting magnetic levitation railway, the coil laying accuracy is 5 mm / 150 m, and the guiding force is higher than conventional methods. Conventionally, ±15m
The lateral movement gap, which can exist up to m, is reduced to about 10 mm as a standard, and the length of the flange is appropriately selected.
It is thought that there will be no problem as long as the emergency limits that are required during levitation are ensured.

In this case, the lower part of the vehicle can be freely used as an auxiliary support guide, so it is constructed in the same way as a conventional railway track, and the gauge is set to the standard 1435 m.
An embodiment of the present invention in which this is formed is shown in FIG. Although it is possible that the track] could be a track bed track,
Considering the combination with side wall 2, rail 3 and slab 4
It is easy to think of a direct-coupled trajectory consisting of

Further, in this case, it is necessary that the rigid portions of these raceway members have low magnetic properties or non-magnetic properties.

In that case, the price of these low-magnetic steels is expected to be at most 2.5 to 3.0 times that of ordinary steel, and less than the price of the coil.There is no problem at all with regard to its feasibility.

If this embodiment of the present invention is used, a track will be constructed on a conventional railway for the time being, and at this time, rigid parts such as track members will be made of low magnetic or non-magnetic members. In the future, when superconducting magnetic levitation railways satisfy reliability and become economically feasible, side walls and coils will be added.
If we consider sharing this track with this railway, or dedicating it to it, construction of this railway could begin immediately, and the benefits would be limitless.

According to the superconducting magnetic levitation railway that shares a guideway with a conventional railway according to the present invention, the wheels used during low-speed running are rigid wheels with flanges, and these are installed on the guideway. Since you can receive it on the track shared with the next railway,
For the time being, there will be no need to construct a guideway specific to superconducting magnetic levitation railways.

Moreover, according to the second invention, since the rigid members used for the rigid wheels of the first invention, their tracks, and their riverside members are low magnetic or non-magnetic members, superconducting magnetic levitation railways ( Second, it is possible to realize a railway that runs well without any problems in terms of attractive force or magnetic resistance.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of a superconducting magnetic levitation railway that shares a guideway with a conventional railway according to an embodiment of the present invention.

Claims (1)

[Scope of Claims] 1) In a superconducting magnetically levitated railway with side wall levitation, the wheels during low-speed running are rigid wheels with flanges, and these are supported by a track provided in the guideway that is shared with conventional railways. A superconducting magnetic levitation railway that shares a guideway with a conventional railway. 2) The guideway is shared with the conventional railway according to claim 1, characterized in that the rigid members used for the rigid wheels, the tracks, and their peripheral members are low magnetic or non-magnetic members. A superconducting magnetic levitation train.