JPH05304761A - Ground coil mounter for superconductive magnetic levitation railway - Google Patents

Abstract

PURPOSE:To see that rainwater does not damage the member around a gap even if it penetrates into the gap and freezes, and facilitate the mounting work of a ground coil by arranging an nonwaterabsorptive elastic member in the gap between the inner face of the mounting hole of the aboveground coil and a mounting coil. CONSTITUTION:The inside diameter D1 of the mounting hole 4b of the insulating armor 4 of a ground coil 2 is made larger than the diameter D2 of the mounting screw 5 buried in a truck structure 1, taking the accuracy of the truck structure 1 into consideration. So, a nonwaterabsorptive elastic member 10 such as silicon rubber, etc., which is made in the shape of a tube having such dimensions that the outside diameter is a little smaller than the inside diameter D1 of the mounting hole 4b and that the inside diameter is a little larger than the screw diameter D2, is arranged in the gap 9 made between the inner face of the mounting hole 4b of the insulating armor 4 and the mounting bolt 5, and then a nut 8 is tightened on the mounting bolt 5 through a plain washer 6 and a spring washer 7. Accordingly, even if rainwater penetrates into the gap 20 between the elastic member 10 and the inner face of the mounting hole 4b and freezes, the elastic member 10 is compressed and deformed, so great force does not act on surrounding member.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ground coil mounting device for a superconducting magnetic levitation railway, which mounts a ground coil used in a superconducting magnetic levitation railway to a track structure such as a concrete panel, a concrete beam or a track.

[0002]

2. Description of the Related Art FIG. 7 is a cross-sectional view showing a conventional ground coil mounting device for a superconducting magnetic levitation railway disclosed in, for example, Japanese Patent Publication No. 1-25307, and FIG.
It is a sectional view, in these figures, 1 is a concrete panel, a track structure such as a concrete beam or a track, and 2
Is a ground coil 4a composed of a coil conductor 3 and an insulating sheath 4 made of epoxy resin containing quartz powder for insulating the coil conductor 3 and is integrally formed in the insulating sheath 4 to form a plurality of mounting holes 4b. It is a flange portion having. The ground coil 2 is connected to the ground structure 1 as shown in FIG.
The mounting bolts 5 embedded in the
It is attached by inserting it through b and tightening the nut 8 to the mounting bolt 5 via the flat washer 6 and the spring washer 7. The track structure 1 on which the ground coil 2 is mounted is usually made of concrete, and the dimensional accuracy between the pitches of the mounting bolts 5 is not good. Therefore, taking the accuracy of the track structure 1 into consideration, The inner diameter of the mounting hole 4b is formed larger than the screw diameter of the mounting bolt 5.

[0003]

Since the conventional ground coil mounting device for a superconducting magnetic levitation railway has the above-described structure, as shown in FIG. 8, the space between the inner surface of the mounting hole 4b and the mounting bolt 5 is reduced. There is a large gap 9 at the bottom. When rainwater enters the gap 9, especially in winter, when the rainwater enters and freezes and expands in volume, the members around the gap 9, that is, the track structure 1, the insulating exterior part 2, the mounting bolts 5, etc. are compressed. However, there is a possibility that an accident may occur in which some or all of these members are damaged or destroyed. In order to prevent such an accident, there is a method of injecting a putty-like filler that hardens at room temperature into the gap 9 after fastening the mounting bolt, but this method is for injecting the filler after fastening the mounting bolt. , The filling material injection port in the mounting bolt, etc.
It needs to be processed. In the case of a ground coil, since a large amount of mounting bolts are used for mounting, it takes a lot of time and labor to process the filler injection port into the mounting bolts and to inject the filler, which is extremely difficult. There was a problem.

The present invention has been made to solve the above problems. Even if rainwater entering the gap between the inner surface of the mounting hole and the mounting bolt freezes, the members around the gap are damaged. It is an object of the present invention to provide a ground coil mounting device for a superconducting magnetic levitation railway which is easy to mount.

[0005]

The ground coil mounting device for a superconducting magnetic levitation railway according to the present invention has a non-water-absorbing elastic member disposed in a gap formed between the inner surface of the mounting hole and the mounting bolt. is there.

[0006]

The ground coil mounting device for a superconducting magnetic levitation railway according to the present invention is such that the elastic body is compressed and deformed even if rainwater enters the gap formed between the inner surface of the mounting hole and the mounting bolt and freezes to cause volume expansion. As a result, a large force due to the above-mentioned freezing does not act on the members around it, and damage and accidents are prevented.

[0007]

EXAMPLES Example 1. A cross-sectional view of a ground coil mounting device for a superconducting magnetic levitation railway according to an embodiment of the present invention shown in FIG. 1 will be described below. 1 is different from FIG. 8 in that a gap 9 formed between the inner surface of the mounting hole 4b of the insulating sheath 4 and the mounting bolt 5 has an outer diameter d1 of which the insulating sheath 2 is mounted as shown in FIG. Slightly smaller than the hole diameter D1,
After arranging the non-water-absorbing elastic member 10 formed in a cylindrical shape having an inner diameter d2 slightly larger than the screw diameter D2 of the mounting bolt 5, a nut 8 is attached to the mounting bolt 5, a plain washer 6 and a spring are provided. This is the point where it is tightened and attached via the washer 7.

Next, the operation will be described. Since the outer diameter d1 of the cylindrical elastic member 10 is formed smaller than the diameter of the mounting hole 9, a gap 20 is formed between the elastic member 10 and the inner surface of the mounting hole 9. When rainwater or the like enters this gap 20, the rainwater or the like that has entered is frozen and volumetrically expands, especially in the winter, but the elastic member 10 is compressed and deformed, so that the track structure 1, which is a member around it, is insulated. A large force due to freezing of rainwater or the like does not act on the exterior part 2, the mounting bolts 5, etc., and damage to these members and accidents are prevented.

Example 2. In the above-described embodiment, the mounting of the ground coil having the flange portion on the insulating exterior portion to the track structure has been described, but as shown in FIG. 3 and FIG. 4 of the IV-IV sectional view of FIG. In the case of the ground coil which does not have a flange portion in 4, the cylindrical non-shape shown in FIG. 2 is formed in the gap 9 formed between the inner surface of the mounting hole 4b provided in the main body of the insulating exterior portion and the mounting bolt 5. Insert the water-absorbing elastic member 10, and attach the nut 8 to the mounting bolt 5 and the plain washer 6
The ground coil 2 is attached to the track structure 1 by being tightened via -1, 6-2 and the disc spring washer 11.

Embodiment 3. In addition, VI- in FIGS.
As shown in FIG. 6 of the VI sectional view, in the case of the ground coil 2 having the first and second support members 12 and 13 that engage with and support the insulating exterior portion 4, the first and second support members are provided. Member 12,
The cylindrical non-water-absorbing elastic members 10 shown in FIG. 2 are respectively inserted into the gaps formed between the inner surfaces of the mounting holes 12a and 13a provided in each of 13 and the mounting bolts 5, and the mounting bolts 5 are fitted with nuts. Track structure 1 by tightening 8 through flat washers 6-1, 6-2 and disc spring washer 11
The ground coil 2 is attached to.

Embodiment 4. In the above embodiment, the mounting bolts for mounting the ground coil to the track structure are embedded in the track structure, but the present invention is not limited to this, and the mounting bolts are screwed to the track structure by, for example, embedding a nut in the track structure. Screw holes to form a screw hole to the track structure, and after inserting the cylindrical non-water-absorbing elastic member described above into the mounting hole of the insulating exterior part, The ground coil may be attached to the track structure by screwing, and the same effect as that of the above-described embodiment can be obtained.

Embodiment 5. Further, in the above embodiment,
Although the cylindrical elastic member is provided in the mounting hole of the insulating exterior part or the like, the invention is not limited to this. For example, the elastic member may have a plate shape, and the plate-shaped elastic member may be wound around the mounting bolt. It may be arranged in the mounting hole, and the same effect as the above embodiment can be obtained.

[0013]

As described above, according to the present invention, the non-water-absorbing elastic body is arranged in the gap formed between the mounting hole of the ground coil and the mounting bolt, and the ground coil is secured by the mounting bolt. Since it was configured to be attached to the track structure,
Even if rainwater or the like enters the mounting hole and expands in volume due to freezing, it is absorbed by the elastic body and a large force due to freezing of rainwater or the like does not act on the track structure, the ground coil, the mounting bolts, etc. This prevents damage and accidents to the members.

[Brief description of drawings]

FIG. 1 is a sectional view showing a ground coil mounting device for a superconducting magnetic levitation railway according to an embodiment of the present invention.

FIG. 2 is a perspective view showing an embodiment of the elastic body shown in FIG.

FIG. 3 is a plan view of a ground coil mounting device for a superconducting magnetic levitation railway according to another embodiment of the present invention.

FIG. 4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is a plan view of a ground coil mounting device for a superconducting magnetic levitation railway according to another embodiment of the present invention.

6 is a sectional view taken along line VI-VI in FIG.

FIG. 7 is a plan view showing a conventional ground coil device for a superconducting magnetic levitation railway.

8 is a sectional view taken along line VIII-VIII in FIG.

[Explanation of symbols]

 1 Track Structure 2 Ground Coil 4 Insulation Exterior 4b Mounting Hole 5 Mounting Bolt 6 Plain Washer 7 Spring Washer 8 Nut 10 Elastic Member

Claims (1)

[Claims] 1. A ground structure coil for a superconducting magnetic levitation railway as a track structure through a mounting hole provided in an insulating exterior part of a ground coil for a superconducting magnetic levitation railway or a supporting member engaging with and supporting the insulating exterior part. A ground coil mounting device for a superconducting magnetic levitation railway, comprising a mounting bolt for mounting, wherein a non-water-absorbing elastic member is disposed in a gap formed between the inner surface of the mounting hole and the mounting bolt.