JPH0562828A - Movable magnetic field reducing apparatus - Google Patents

Abstract

PURPOSE:To reduce a magnetic field on a platform by constraining lines of magnetic force stemming from magnets of a vehicle wherein the diffusion of lines of magnetic force is prevented by moving a movable magnetic substance, which moves associatedly with the arrival and departure of a floating type railway vehicle, to the vicinity of the magnets of a vehicle during the getting on and off of passengers into a vehicle. CONSTITUTION:At a platform for passengers of a magnetic floating railway, after floating type railway vehicles come to rest at a predetermined location, a magnetic substance 1, stored below the platform remotely from the vehicle 3, is moved to the vicinity of magnets of the vehicle by means of a hydraulic system 2 before the openings of the vehicles' doors. A magnetic field on the platform is reduced by confining lines of magnetic force stemming from the magnets 4 of the vehicles within a limited range in the vicinity of the vehicles' magnets. Thereafter, passengers are allowed to get on board the vehicles by opening the vehicles' doors. Upon completion of the getting on and off of the passengers, and immediately after the leaving of the passengers from the vehicles, the constrain of the vehicles' magnets 4 is canceled by returning the magnetic substance 1 to its original position, and isolating the magnetic substance from the vehicles' magnets. After the restoration of the magnets to a safety state for travel, the vehicles depart.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a movable magnetic field reducing device that does not cause resistance to vehicle traveling in a passenger landing of a magnetic levitation railway.

[0002]

2. Description of the Related Art A conventional magnetic field is reduced by fixing a magnetic body in the vicinity of a road surface of a levitation railway vehicle so that the magnetic field lines of the vehicle magnet are restricted and the distance from the vehicle magnet is larger than that of the magnetic body. Although a method for reducing the magnetic field on the platform has been considered, a magnetic substance installed may increase the running resistance of the vehicle, and a magnetic field reducing device without running resistance as in the present invention has not been developed.

[0003]

The magnetically levitated railway uses a high-performance magnet mounted on a vehicle as a power source and generates a strong magnetic field around the magnet. Therefore, there is a possibility that the passenger may approach when getting on and off the passenger. It is necessary to reduce the magnetic field generated by the vehicle magnet at the location.To this end, it is important to always install a magnetic material close to the vehicle running path inside the station to prevent the magnetic field lines from spreading due to the vehicle magnet. Will be increased to prevent smooth running of the vehicle.

[0004]

[Means for Solving the Problems] In a passenger landing of a magnetic levitation railway, a movable magnetic body that moves in conjunction with the arrival and departure of a levitation railway vehicle is brought close to a vehicle magnet when the passenger gets on and off the vehicle. The magnetic field on the platform where the passenger walks is reduced by preventing the magnetic field lines from spreading, and after the passenger has finished getting on and off the vehicle, the magnetic material is quickly separated from the vicinity of the magnet of the vehicle to reduce the magnetic field that does not cause running resistance in the vehicle. Is possible.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration and embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a conceptual diagram when this device is installed under a platform, in a passenger landing of a magnetic levitation railway, after the levitation railway vehicle 3 stops at a predetermined position and before the vehicle door opens, The magnetic body 1 stored under the platform apart from the vehicle is brought close to the vehicle magnet by the hydraulic device 2, and the magnetic force line by the vehicle magnet 4 is restricted to a limited range near the vehicle magnet. It reduces the magnetic field, then opens the vehicle door and allows passengers to approach the vehicle. Further, after the passenger gets on and off and the passenger leaves the vehicle, the magnetic body 1 is quickly returned to its original position and separated from the vehicle magnet. The vehicle will start after the restraint is released and the vehicle is returned to the state where it does not hinder the running.

FIG. 2 is a conceptual diagram when this device is installed below the track surface, and the same operation is performed according to the running of the train at the station described in the previous section.

FIG. 3 is a sketch of the apparatus when the apparatus is installed under the platform.

This device comprises a magnetic field line diffusion preventing portion by a magnetic body 1 and a hydraulic device 2 for moving the magnetic force line preventing portion, and operates in association with the arrival and departure of a levitation railway vehicle 3.

[0009]

As described above, the movable magnetic field reducing device according to the present invention is more advantageous than the magnetic body fixed near the raceway surface.
It is possible to perform the same function without causing running resistance when arriving and departing a levitation railway vehicle, enabling smooth vehicle operation, and by using it together with the conventional magnetic shielding device, safe passenger use Can provide space.

[Brief description of drawings]

FIG. 1 is a conceptual diagram when this device is installed under a platform.

FIG. 2 is a conceptual diagram when the present device is installed below a raceway surface.

FIG. 3 is a sketch drawing of the device of the present invention installed under a platform.

[Explanation of symbols]

 1 magnetic body 2 hydraulic device 3 levitating railway vehicle 4 vehicle magnet 5 track structure 6 platform

Claims (1)

[Claims] 1. At a passenger landing of a magnetic levitation railway,
A movable magnetic body placed at a position far from the vehicle running surface is moved by a hydraulic system or an electric motor in conjunction with the arrival and departure of the vehicle, and after the vehicle arrives, the magnetic body is brought close to the vehicle magnet to restrain the magnetic field lines from the vehicle magnet. A movable magnetic field reduction device that reduces the magnetic field on the platform, releases the magnetic body from the vehicle magnet to release the constraint of the magnetic field lines after the passengers get on and off, and does not resist the departure of the train.