JPH04248304A - Truck of magnetic levitation vehicle - Google Patents

Abstract

PURPOSE:To prevent quench by suppressing elastic vibration of a superconducting magnet. CONSTITUTION:A superconducting magnet 4 is disposed on the inside of the side beam 5 of a truck frame through a spacer 6 secured to the side beam 5 and a coupling beam 7 couples the right and left beams 5 in the truck of a magnetic levitation vehicle. Since the superconducting magnet 4 is distribution supported at a large number of points in the side beam 5 with the right and left beams 5 being coupled and since it is subjected to frictional vibration by means of the spacer 6, elastic vibration thereof is suppressed.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bogie for a magnetically levitated vehicle, and more particularly to a bogie for a magnetically levitated vehicle suitable for realizing quenchless superconducting magnets.

0002

[Prior Art] As a conventional technology, for example, Hitachi Hyoron 7
“Floating Railway MLU002” in Volume 0, No. 7 (1988-7)
As described in ``Vehicle Structure'', the vehicle body is supported by a second spring provided at the longitudinal center of both side beams in the bogie frame on which equipment is mounted, and the outer surface of the side beams of the bogie frame and the superconducting magnet are connected to each other. The superconducting magnets are directly connected to the side surfaces of the bogie by bolts at a few points. That is, the superconducting magnets are not elastically supported by the bogie frame. Furthermore, the superconducting magnets themselves do not have a special vibration damping structure.

0003

[Problem to be solved by the invention] In the prior art,
Since the bogie frame on which the equipment is mounted and the superconducting magnet are integrated, the mass under the second spring is very large. For this reason, the natural frequencies of the superconducting magnets and the bogie frame, which are directly subjected to electromagnetic fluctuation forces, become close to the natural frequency of the vehicle body, resulting in poor riding comfort on the vehicle body. In order to solve this problem, if a first spring is provided between the superconducting magnet and the bogie frame, the natural frequency of the superconducting magnet, which is directly subjected to electromagnetic fluctuating force, becomes high because the mass is only the superconducting magnet, and the natural vibration of the car body increases. Since it moves much higher than the number, the ride comfort on the car body becomes better. At this time, if the superconducting magnet is elastically supported on the bogie frame by the first spring, when the superconducting magnet receives an electromagnetic fluctuating external force, elastic vibration is likely to occur due to the lack of rigidity of the superconducting magnet. There is a problem in that quenching is likely to occur due to heat generation.

An object of the present invention is to prevent quenching by suppressing the elastic vibrations of a superconducting magnet.

[0005]

[Means for Solving the Problems] In the present invention, as a first technical means for suppressing the elastic vibration of a superconducting magnet, a superconducting magnet is provided inside a side beam via a large number of spacers fixed to the side beam, The left and right side beams are connected by a connecting beam.

[0006] As a second means, the spacer is constructed of a vibration damping member.

As a third means, the gaps between the spacers are filled with foam material.

[0008] As a fourth means, the two divided side beams are fastened together using fasteners.

As a fifth means, an upper frame on which equipment is mounted via a first spring and a second spring are provided on the side beam.

As a sixth means, a portion of the side beam on the track side wall side is not provided.

As a seventh means, in order to reduce the weight, the superconducting magnet outer tank is made of aluminum, and the side beams and the connecting beams are made of composite resin.

0012

[Operation] According to the first technical means, the superconducting magnet is provided inside the side beam via a large number of spacers fixed to the side beam, and the left and right side beams are connected by a connecting beam. is supported at multiple points on the side beams, and the left and right side beams are connected, which suppresses the elastic deformation of the superconducting magnet.
It becomes difficult to vibrate elastically. In addition, it is relatively lightweight and has a rigid structure that is difficult to elastically vibrate.

According to the second means, since the spacer is made of a vibration damping member, the elastic vibrations of the superconducting magnet can be actively damped.

According to the third means, since the foam material is filled between the spacers, the rigidity of the side beam itself is further increased, and therefore the superconducting magnet supported by the side beam becomes less likely to vibrate elastically.

[0015] According to the fourth means, since the side beams which are divided into two parts are fastened together on the outside of the superconducting magnet, assembly is easy.

According to the fifth means, transmission of high frequency vibrations to the vehicle body can be suppressed.

According to the sixth means, the distance between the track side wall and the superconducting magnet can be reduced, and a large electromagnetic force can be obtained.

According to the seventh means, since the side beams and the connecting beams are made of composite resin, the weight of the truck can be reduced.

[0019]

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 5.

Reference numeral 1 denotes a vehicle body, 2 a bogie provided at both ends of the vehicle body 1, and 3 a track. The trolley 2 is composed of the following: 4 is a superconducting magnet, 4a is a coil in the superconducting magnet, 5 is a side beam of the bogie frame that covers the circumference of the superconducting magnet 4, and 6 is a side beam 5 located between the outer surface of the superconducting magnet 4 and the inner surface of the side beam 5. 7 is a connecting beam that connects the left and right side beams 5, 8 is a first spring provided on the side beam 5, 9 is an upper frame supported by the first spring, and 10 is a connecting beam that connects the left and right side beams 5. The installed equipment includes: 11 is a second spring provided on the upper frame 9 and supports the vehicle body 1; 12 and 13 are auxiliary support wheels attached to the upper frame 9 and used during low-speed running;
It is an auxiliary guide wheel. The spacer 6 includes a rib 14 fixed to the side beam 5, an elastic material 15, and a contact member 16 that makes firm contact with the superconducting magnet 4. Orbit 3 has 17
a levitation coil that applies a levitation force in the vertical direction to the 18 superconducting magnets 4; a propulsion/guidance coil that applies a left-right guiding force to the 18 superconducting magnets 4 and propels the superconducting magnets in the front-rear direction with an energized propulsion current; There is. 3a is a track side wall.

According to the above configuration, when the superconducting magnet 4 receives an electromagnetic fluctuation external force in the vertical, longitudinal, and horizontal directions from the levitation coil 17 and the propulsion/guidance coil 18, the superconducting magnet 4 is moved at multiple points by the spacer 6. Since it is supported in a distributed manner, elastic deformation such as bending and torsion is less likely to occur. At the same time, since minute sliding is possible between the contact members 16 of the large number of spacers 6 and the superconducting magnet 4, high frequency elastic vibrations of the superconducting magnet 4 can be damped by the damper. By suppressing vibration, heat generation in the coil 4a due to vibration is suppressed, and quenching of the magnet is suppressed.

On the other hand, the residual vibration of the side beam 5 is alleviated by the system of the upper frame 9 and the second spring 11, which includes the first spring 8, the equipment 10, the wheels 12, 13, etc., and the high-frequency vibration is transmitted to the vehicle body 1. will be very small.

According to this embodiment, since the two divided side beams are fastened together, the assembly is very easy. Further, since the upper frame on which the equipment is mounted via the first spring and the second spring are provided on the side beam, there is an effect of suppressing the transmission of high frequency vibrations to the vehicle body.

In another embodiment of the present invention, a foam material 19 is filled between the spacers 6 as shown in FIG. According to this embodiment, the rigidity of the side beams and superconducting magnets is further increased, and elastic vibrations and quenching are further suppressed.

In yet another embodiment of the present invention, a flange 20 is provided on the superconducting magnet 4 as shown in FIG. 7, and the flange 20 is fixed to the side beam 5 via a fastening spacer 21. According to this embodiment, since no side beam is provided on the side wall of the track, the distance between the superconducting magnet and the side wall can be reduced, and a large electromagnetic force can be obtained.

Further, in the present invention, the outer vessel of the superconducting magnet can be made of aluminum, and the side beams and coupling beams can be made of composite resin. According to this, there is an effect that the weight of the truck can be reduced.

[0027]

[Effects of the Invention] According to the present invention, the superconducting magnet is supported at multiple points within the side beam, and the left and right side beams are connected, so elastic deformation of the superconducting magnet is suppressed, and quenching is therefore prevented. can. In addition, the elastic vibration of the superconducting magnet is actively suppressed by the vibration damping provided by the spacer.
Quench can be actively prevented.

[Brief explanation of the drawing]

FIG. 1 is a front view showing a superconducting magnet and a side beam portion of a bogie according to an embodiment of the present invention in longitudinal section.

FIG. 2 is a side view of the magnetic levitation vehicle equipped with the truck of FIG. 1;

FIG. 3 is a side view of the truck of FIG. 1;

FIG. 4 is a plan view of the truck in FIG. 1;

FIG. 5 is a longitudinal sectional view of the side beam spacer portion of FIG. 1;

FIG. 6 is a vertical sectional view of the same portion as FIG. 5 of another embodiment of the present invention.

FIG. 7: A superconducting magnet for a truck according to still another embodiment of the present invention.
It is a partial front view showing a side beam part in a longitudinal section.

[Explanation of symbols]

1... Vehicle body, 2... Bogie, 3... Track, 3a... Track side wall, 4...
Superconducting magnet, 4a... Coil, 5... Side beam, 6... Spacer,
7...Connection beam, 8...First spring, 9...Upper frame, 10...Equipment, 1
DESCRIPTION OF SYMBOLS 1...Second spring, 12...Auxiliary support wheel, 13...Auxiliary guide wheel, 14...Spacer rib, 15...Spacer elastic member, 1
6... Spacer contact member, 17... Levitation coil, 18... Propulsion/guidance coil, 19... Foamed material, 20... Flange, 2
1...Tightening spacer.

Claims (1)

[Scope of Claim] [Claim 1] In a bogie for a magnetically levitated vehicle having a superconducting magnet, the superconducting magnet is provided inside the side beam of the bogie frame via a spacer fixed to the side beam, and the superconducting magnet is provided on the inside of the side beam of the bogie frame, and Claim 2: The carriage of the magnetic levitation vehicle according to claim 1, wherein the spacer has a vibration damping member; Claim 3: The carriage of the magnetic levitation vehicle according to claim 1, wherein the spacer has a vibration damping member. Claim 1: The magnetically levitated vehicle bogie according to claim 1, wherein the bogie is filled with a foam material.Claim 4: The magnetically levitated vehicle bogie according to claim 1, wherein the two divided side beams are integrally fastened together with a fastener. 5]
A bogie for a magnetically levitated vehicle according to claim 1, wherein an upper frame and a second spring are provided on the side beam via a first spring.Claim 6: A portion of the side beam on the track side wall side is not provided. Claim 7: The outer tank of the superconducting magnet is made of aluminum,
The bogie for a magnetically levitated vehicle according to claim 1, wherein the side beams and the connecting beams are made of composite resin.