JPH07163127A - Ground coil for magnetic levitation railway - Google Patents

Abstract

PURPOSE:To stabilize the assemblage of ground coil by partially bulging the inner face of a spacer receiving a thrust coil so that they come into contact at a same position at all times. CONSTITUTION:A spacer is provided with a pocket part 3a for receiving a rear thrust coil (SC) and pockets 3b, 3d for receiving a surface thrust coil (MC) at the right and left end parts thereof. The bottom face of the pocket 3a is bulged 3a' at four points so that the SC comes into contact therewith upon assemblage. In other words, the contact parts bear the load at the time of assembling and the electromagnetic force at the time of running of train. The bulging parts 3a' are set at the intersections of the SC and MC. The height and width of the bulging part 3a' are set at 2-3mm while taking account of the warpages of SC and spacer.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetically levitated railway ground coil.

[0002]

2. Description of the Related Art A conventional ground coil fixing method is disclosed in Japanese Patent Application No.
As described in 63-172756 specification, a method of directly embedding a ground coil in a concrete track, a method of fixing a flange portion provided on the coil to a concrete side wall with a bolt, or a positioning using a molded product spacer. There was a method to fix it, but the strength of the ground coil was reduced by the alkaline solution in the concrete forming the side wall, the heat elongation due to the temperature rise of the coil, the crack of the ground coil due to the generation of thermal stress, and the molding of the ground coil. Considering the decrease in bolt tightening force due to creep of the molding material,
There is a problem such as workability of periodical bolt tightening force check. A method has been devised in which the guide coil is integrally attached to the concrete side wall. In addition, Japanese patent application
According to the specification of 4-239167, a method has been devised in which an elastic body is provided between a spacer and a propulsion coil to suppress vibration caused by electromagnetic force.

[0003]

The spacer for accommodating the above-mentioned prior art propulsion coil is generally formed of polyester resin or the like. Further, the insulation jacket of the propulsion coil is also a molded product of epoxy resin or the like, which is a product in which waviness of the entire product or unevenness of the surface occurs.

In the ground coil assembly structure, the back side propulsion coil is housed in the spacer, the front side propulsion coil is applied to the back side propulsion coil, and the levitation coil is attached through the elastic body, so that each propulsion coil is operated at a required pressure. , Is fixed.

That is, the inner surface of the spacer and the back side surface of the back side propulsion coil, and the front side surface of the back side propulsion coil and the back side surface of the front side propulsion coil are assembled in a state of being in contact with each other. Since there is unevenness on the surface and the surface, the contacting portion is local, and the contacting portion also differs for each product. In the assembling in such a state, the portion of the stress and the deformation generated in each part due to the pressure at the time of assembling and the size thereof cannot be specified, and the assembling has an unstable element.

[0006] On the other hand, the propulsion coil is
Left and right direction, that is, the direction between the train and the side wall, the up and down direction, and
Since electromagnetic force is generated in the front-back direction, that is, in the traveling direction of the train, if the contact between each product is not stable, the stress and deformation that occur each time the train passes becomes unstable and cannot be predicted. Stress or deformation may occur, and in some cases, vibration or noise of the propulsion coil, wear, or damage may occur.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a stable coil fixing method, which stabilizes the stress and deformation generated in each product at the time of assembling and stabilizes the coil even when the train is running.

[0008]

In order to solve the above-mentioned problems, a part of the bottom surface of the storage pocket of the spacer is made to travel and molded, and the back side propulsion coil and the spacer are brought into contact with each other at this part. is there.

Further, an elastic body or an inelastic body having a size of about 1 mm is provided at the intersection of the back side propulsion coil and the front side propulsion coil.
The load during assembly and the transmission route of electromagnetic force during train travel are made constant.

[0010]

In order to solve the above-mentioned object, a part of the inner surface of the spacer with which the back side propulsion coil comes into contact is shaped so that it travels so that the contact between the propulsion coil and the spacer is always at the same position. By interposing an elastic body or non-elastic body having a required contact surface area and thickness also in the crossing and contacting portions of the back side propulsion coil and the front side propulsion coil, the contacting part between each product is always made constant. , Stable integration.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

1 is a concrete side wall, 2a is a front side propulsion coil, 2b is a back side propulsion coil, and 3 is a spacer for accommodating the back side propulsion coil and the front side propulsion coil. 4 is a levitation coil.

Reference numeral 5a is a holding material for fixing the positional relationship between the spacer and the back side propulsion coil, and 5b is a holding material for fixing the positional relationship between the spacer and the front side propulsion coil.

6a is an elastic body provided between the levitation coil and the front side propulsion coil, and 6b is an elastic body or an inelastic body provided between the back side propulsion coil and the back side propulsion coil. Reference numeral 7 is a mounting bolt.

The shape of the spacer will be described with reference to FIG.

The spacer is provided with a pocket 3a for accommodating the back side propulsion coil, a pocket 3b for accommodating the left side end of the front side propulsion coil, and a pocket 3d for accommodating the right side end of the front side propulsion coil. There is.

In addition, a part 4 of the bottom surface of the pocket 3a for accommodating the back side propulsion coil is a part 3 which has been traveled from the other surface.
a'is provided, and when the back side propulsion coil is incorporated, these four surfaces are always in contact with each other.

That is, the load during assembly and the electromagnetic force during train running are all received at this contact portion, and the spacer and the back side propulsion coil do not come into contact with each other on the other surface, and the load receiving surface is not contacted. Can be confirmed.

Regarding the position of 3a ', it can be easily understood that the crossing portion of the back side propulsion coil and the front side propulsion coil, which will be described later, is preferable in terms of assembly stability and strength of the propulsion coil.

The projecting height and projecting width of 3a 'are determined in consideration of the amount of warp of the back side propulsion coil, the amount of warp of the spacer, etc., and are set to 2 to 3 mm.

Further, grooves 3e and 3f are provided to accommodate the holding material 5a between the back side propulsion coil and the spacer and the holding material 5b between the front side propulsion coil and the spacer, respectively. Next, the protruding position of the spacer will be described in detail.

As described above, the back-side propulsion coil and the front-side propulsion coil are continuously attached in a chain as can be seen from FIG. 1, but since 6a and 6b are provided at the intersecting portions, they are located at this position. In addition, by providing the protruding portion of the spacer, the load at the time of assembly and the electromagnetic force at the time of traveling are smoothly transmitted, and the stress generated in the propulsion coil at the time of assembly can be reduced. Next, FIG. 2 and FIG. 4B show a cross-sectional portion of the protruding portion 3a 'of the spacer.

FIG. 4A is a sectional view taken along line XX of FIG. 1, that is,
The cross section of the part without the protrusion of the spacer is shown. From this figure, except for the part with the protrusion 3a 'of the spacer,
It can be seen that there is a required gap between the back side propulsion coil, the back side propulsion coil and the front side propulsion coil, and the front side propulsion coil and the levitation coil, and there is no load transmission in this portion.

That is, even if the spacer, the back-side propulsion coil and the front-side propulsion coil have undulations or surface irregularities, they do not come into contact with each other.

[0025]

As described above, according to the present invention, the load when the ground coil is incorporated and the electromagnetic force transmission portion and the load receiving portion of the propulsion coil and the levitation coil that are generated when the train passes through can be made constant. The reliability of the magnetic levitation railway ground coil can be assembled in a stable manner without damage to the propulsion coil, levitation coil, or spacer.

[Brief description of drawings]

FIG. 1 is a front view showing a magnetic levitation railway ground coil assembly structure according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a perspective view of a spacer.

FIG. 4 is a sectional view of FIG.

[Explanation of symbols]

1 ... Concrete side wall, 2a ... Front side thrust coil, 2b
... back side propelling coil, 3 ... spacer, 4 ... levitation guide coil, 5a, 5b ... holding material, 6a ... elastic body, 6b ... elastic body or non-elastic body, 7 ... mounting bolt.

Claims (3)

[Claims] 1. A magnetic levitation railway ground coil for propulsion and levitation guidance, wherein the spacer is mounted on a side wall via a spacer capable of accommodating the propulsion coil. A magnetic levitation railway ground coil, characterized in that a part of an inner surface of the spacer for accommodating the propulsion coil is formed into a shape that is on a business trip so that the contact of the propulsion coil is always at the same position. 2. The ground coil according to claim 1, wherein the protrusion of the spacer is provided at a position where the back side propulsion coil and the front side propulsion coil cross each other. 3. The method according to claim 1, wherein a thickness of about 1 mm is provided between the back side propulsion coil and the front side propulsion coil, and the space between the back side propulsion coil and the front side propulsion coil on the projection surface of the projection of the spacer. A magnetic levitation railway ground coil with an elastic or non-elastic body.