JPH05346109A - Stud bolt and method for installing propeller coil - Google Patents

Abstract

PURPOSE:To simply and accurately install propeller coils, secure strength and enable long-time usage by arranging an installation part for an orbit-side wall and a fastening part of the propeller coil on both ends of the support part of the propeller coil and thereby composing a stud bolt. CONSTITUTION:A stud bolt 1 is composed of a support part 4 formed on a center portion for supporting a propeller coil, a side-wall side screw 2 formed on its one end through a flange 3 and having a screw part as an installation part, and a front-wall side screw 5 formed on the other end as a fastening part. The side-wall side screw 2 is screwed into an insert 9 fitted to an orbit side wall 7 of the propeller coil, while a surface of the flange 3 is in contact with an installation surface of the orbit side wall 7 for fixation. The support part 4 is inserted into installation holes 8 of a plurality of propeller coils 6a and 6b, and installed on the orbit side wall 7 through the flange 3. The front- side screw 5 is fastened by a washer 10 and a nut 11, for fixing the propeller coils 6a and 6b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stud bolt for mounting a propulsion coil for mounting a propulsion coil which constitutes a superconducting magnetic levitation railway system on a track, and a method for mounting a propulsion coil using the stud bolt.

[0002]

2. Description of the Related Art In a superconducting magnetic levitation type railway system, a ground coil that gives a vehicle a propulsive force and a levitation guide force is installed on the side wall of the track over the entire track on which the vehicle runs. Among the ground coils, the propulsion coil that gives a propulsive force to the vehicle is a racetrack-shaped conductor wire molded into a predetermined shape with resin.

Next, a conventional method of attaching the propulsion coil to the side wall of the raceway will be described with reference to FIG. 9A and 9B relate to the attachment of a conventional propulsion coil to a side wall of a raceway. FIG. 9A is a cross-sectional view in which the propulsion coil and the levitation guide coil are attached to the side wall of the raceway, and FIG. 9B is a front view of FIG. .. In FIG. 9B, the propulsion coils 13a and 13b are fixed to the side wall 7 by an embedding method in which they are fitted into embedded portions provided on both side walls 7 of the track.

First, the first layer propulsion coil 13a is fitted in the embedded portion of the side wall 9, and the loading portion in which the side wall 7 of the track is provided.
It is positioned by 14 etc. and installed in a predetermined place. Then, the second layer propulsion coil 13b is fitted to the outer side of the first layer propulsion coil 13a while being displaced by half each, and the propulsion coils 13a and 13b are fitted into the side wall 7 of the track by concrete or resin. Fix it. Further, the levitation guide coil 12 is attached and fixed to the loading portion 14 of the side wall 7 and a predetermined position on the side wall 7 on the outer side thereof with bolts.

Here, the propulsion coils 17a and 17b are magnetized by a three-phase alternating current and supply propulsive force to the superconducting coils on the vehicle. The moving magnetic field generated by the three-phase alternating current may be attracted or repelled to each other depending on the mounting accuracy of the side wall 7 of the orbits of the propulsion coils 13a and 13b. It may occur. That is, the propulsion coils 13a and 13b need to be electrically parallel to the superconducting coils on the vehicle, and the accuracy of mounting the propulsion coils 13a and 13b on the side wall 7 of the track is not limited to the flatness of the propulsion coils 13a and 13b. It greatly affects the running performance of the vehicle. For this reason the propulsion coil
It is necessary to sufficiently increase the mounting accuracy of 13a and 13b in the vertical and horizontal directions and the thickness direction.

[0006]

In the embedding method, which is the conventional method for mounting the propulsion coil, the flatness of the propulsion coil embedding surface of the side wall 7 of the track remains unchanged.
Since the mounting accuracy of a and 13b becomes, the propulsion coil 13a,
External force is applied to 13b, which adversely affects the propulsion coils 13a and 13b themselves, and the usable period of the propulsion coils 13a and 13b becomes short. Further, there is a problem that it is difficult to attach the propulsion coils 13a and 13b at predetermined positions and directions.

In addition, the harmonic magnetic fields generated from the propulsion coils 13a and 13b cause vibrations and heat generation in the superconducting coil.
a and 13b must be attached in two layers. Therefore, in order to embed it in the side wall 7 of the track to form the propulsion coils 13a and 13b in two layers, it is necessary to secure sufficient mounting accuracy for each layer. However, the mounting accuracy of the embedded propulsion coils 13a and 13b is largely influenced by the flatness of the mounting surface of the concrete of the side wall 7,
It is very difficult to secure the flatness of the concrete.

Further, since it is necessary to obtain flatness over the entire mounting surface of the track in order to increase the mounting accuracy, there is a problem that it takes much time to embed the propulsion coils 13a and 13b.

Further, since the propulsion coils 13a and 13b are formed in two layers, the mounting surfaces of the propulsion coils 13a and 13b are in surface contact with each other, so that external force causes friction between the propulsion coils 13a and 13b, which causes cracks. There was a drawback.

Therefore, according to the present invention, the above-mentioned drawbacks can be eliminated and a high mounting accuracy can be obtained by a simple mounting operation.
Also, to provide a stud bolt for mounting a propulsion coil having a specific structure, which has a necessary strength against a heavy load when a train is running and enables the propulsion coil to be used for a long time, and a method for mounting the propulsion coil using the stud bolt. With the goal.

[0011]

In order to achieve the above object, according to the present invention of claim 1, a main body formed in a columnar shape is provided at a central portion thereof and is propelled by an electromagnetic action to an on-vehicle coil mounted on the vehicle. A supporting portion for supporting the propulsion coil for applying a force, an attaching portion formed with a protrusion at one end of the supporting portion and attached to the side wall of the track on which the propulsion coil is provided in an array, the supporting portion and the attaching portion And a fastening portion that is provided at the other end of the support portion and that fastens the fastening means for fastening the propulsion coil to the support portion.

According to a second aspect of the present invention, in the stud bolt for mounting the propulsion coil according to the first aspect, the joint portion between the mounting portion and the flange or the joint portion between the flange and the supporting portion is chamfered at least on one side. .. Further, according to the present invention of claim 3, in the stud bolt for mounting the propulsion coil according to claims 1 and 2, a knob portion is provided in a part of the support portion.

Next, according to the present invention of claim 4, in a method of mounting a propulsion coil on a side wall of a track using the stud bolt for mounting a propulsion coil according to any one of claims 1 to 3, the stud bolt is mounted. Fixing the parts so that the flange is in contact with the mounting surface of the side wall of the raceway, and a space for mounting the propulsion coil having a mounting hole in the stud bolt support part to the stud bolt between the layers and separating the propulsion coil. The method comprises the steps of inserting a sir and attaching it to the side wall of the track over two layers, and after attaching the propulsion coil to the stud bolt, attaching fastening means to the fastening portion to fix the propulsion coil to the side wall of the raceway.

[0014]

With the above-mentioned structure, in the invention of claim 1, the mounting portion of the stud bolt for mounting the propulsion coil is fitted and fixed until the flange surface comes into contact with the mounting surface of the side wall of the raceway. Then, the propulsion coil is inserted into the support portion, and the propulsion coil is attached to the side wall of the track via the flange. Then, fastening means is provided at the fastening portion to fix the propulsion coil to the side wall of the track. Therefore, it is not necessary to adjust the accuracy of mounting the propulsion coil over the entire mounting surface of the side wall of the track, and the accuracy of mounting the propulsion coil can be obtained by adjusting only the flange surface. Moreover, since the propulsion coil is attached to the side wall of the track via the flange, it is possible to obtain the required strength against a large load generated when the train runs.

According to the second aspect of the present invention, the joint between the mounting portion and the flange or the joint between the flange and the supporting portion is chamfered at least on one side, so that a large stress generated at each joint is relieved. be able to.

According to the third aspect of the present invention, by providing a knob portion on a part of the support portion, the knob portion can be attached by using a spanner or the like when the stud bolt for attaching the propulsion coil is attached to the side wall of the raceway. Can be improved.

According to the present invention of claim 4, the spacer is inserted between the layers of the propulsion coil by using the above-mentioned stud bolt for mounting the propulsion coil, and the propulsion coil is mounted on the side wall of the raceway. Since two layers of propulsion coils are attached to the stud bolts at the same time, workability can be improved and work time can be reduced. Further, by inserting a spacer between the two layers of the propulsion coils, it is possible to reduce friction on the mounting surface of the propulsion coils due to a load such as electric vibration generated when the train runs.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A stud bolt for mounting a propulsion coil according to the present invention will be described in detail with reference to FIG.

FIG. 1 is an external view of a first embodiment of a stud bolt for mounting a propulsion coil used for mounting a propulsion coil of a superconducting magnetic levitation railway according to the first aspect of the invention.

In FIG. 1, a stud bolt 1 for attaching the propulsion coil to the side wall of the raceway is provided with a support portion 4 formed in the central portion for supporting the propulsion coil and a flange 3 at one end thereof.
It is composed of a side wall side threaded portion 2 having a threaded portion which is a mounting portion formed through the above, and a tip side threaded portion 5 which is a fastening portion formed at the other end of the support portion 4.

Here, the outer shape of the propulsion coil for using the stud bolt 1 of the inventions of claims 1 to 3 is shown in FIG.
Will be explained. FIG. 5 is an outline view of a propulsion coil for using the invention stud bolts of claims 1 to 3. The propulsion coils 6a and 6b are formed by molding a racetrack-shaped conductive wire into a predetermined shape with resin. In FIG. 8, when the propelling coils 6a and 6b are molded with resin, eight mounting holes 8 for the stud bolt 1 are provided at predetermined places. A method of mounting the stud bolt 1 for mounting the propulsion coil and the propulsion coils 6a and 6b having the above-described configuration on the track side wall 7 will be described with reference to FIGS.

FIG. 6 is a sectional view showing a state in which the propulsion coil is attached to the side wall of the raceway using the stud bolt according to the first aspect of the present invention, and FIG. 7 shows the stud bolt for attaching the propulsion coil according to the first aspect. Depending on the method of attaching the propulsion coil, (a) is a transverse cross-sectional view showing the propulsion coil and the levitation guide coil attached to the side wall of the track according to the attachment method of the propulsion coil. (B) is a front view of (a).

In FIGS. 6 and 7, first, an insert 9 having a thread groove on the side wall 7 of the propulsion coil for mounting the side wall 3 of the stud bolt 1 for mounting the propulsion coil on the side wall 7 of the propulsion coil is fitted in a predetermined place. Come on. Next, the side wall side threaded portion 2 of the stud bolt 1 is inserted into the thread groove of the insert 9 and screwed, and the surface of the flange 3 is brought into contact with the mounting surface of the track side wall 7 and fixed. Then, the mounting holes 8 of the mutual coil 6a of the first layer are passed through the supporting portions of the stud bolts 1 and mounted on the side walls 7 via the flanges 3 and arranged in a row. Further, the stud bolts 1 are passed through the mounting holes 8 of the second layer propulsion coil 6b on the outer side of the second layer propulsion coil 6b so as to be offset from the first layer propulsion coil 6a by half.

Next, the front end side screw portion 5 of the stud bolt 1 is screwed by a washer 10 and a nut 11 which are fastening means to fix the two layers of the propulsion coils 6a and 6b together. At this time, in order to obtain the flatness of the propulsion coils 6a and 6b, an intervening material such as a spacer is provided on the flange 2 to adjust the flatness.

As a result, in one embodiment of the stud bolt for mounting the propulsion coil according to claim 1, the stud bolt 1
By forming the side wall side threaded portion 3 on the support portion 4 via the flange 2, the first layer propulsion coil 6a is formed on the side wall 7,
Since the flange 2 is mounted without contact, the flatness of the mounting surface of the track side wall 7 adversely affects the main body of the propulsion coil 6a, or the propulsion coils 6a and 6b.
It can be avoided that the mounting accuracy of the is deteriorated.

Further, an external force such as a pressing force against the track side wall 7 acts on the propulsion coils 6a and 6b by electromagnetic interaction with the superconducting coil, so that a large force also acts on the stud bolt 1. However, since the stud bolt 1 is in contact with the mounting surface of the side wall of the raceway at the surface of the flange 2, the force is dispersed even with respect to the bending moment acting on the shaft of the stud bolt 1 and the pressing force against the raceway side wall 7. , Can have great strength.

Further, the mounting position can be determined by the stud bolt 1 by the mounting method of mounting the two layers of the propulsion coils 6a, 6b on the side wall 7 by the stud bolt 1.
Further, since the mounting holes 8 for the first layer and the second layer propulsion coils 6a and 6b are provided so that the stud bolts 1 can be simultaneously tightened, the two layers of propulsion coils can be mounted with a simple structure, thereby improving workability. Is improved. An embodiment of the stud bolt according to the second aspect of the present invention will be described with reference to FIG.

FIG. 2 is an external view of an embodiment of the stud bolt according to the present invention. In FIG. 2, the stud bolt 21 according to claim 2 is the invention according to claim 1 in which the side wall side screw portion 3 is formed on the support portion 4 via the flange 2.
The tip end screw portion 5 is provided at the other end of the support portion 4, while the chamfered portions 22 and 23 are further provided at the rising portion of the flange 2.

A method for mounting the propulsion coils 6a and 6b using the stud bolt 21 having the above-mentioned structure is defined in claim 1.
The stud bolt 21 is attached to the side wall 7 of the raceway in the same manner as in the embodiment described in 1.
The stud bolt 21 is passed through the mounting holes 8 of the first layer propulsion coil 6a and the second layer propulsion coil 6b by the watter 10 and the nut 11, and the two-layer propulsion coil 6 is attached.
Tighten a and 6b.

As a result, in the embodiment of the invention described in claim 2, the same effect as the embodiment of the invention described in claim 1 is obtained, and the force acting on the propulsion coils 6a, 6b causes the flange 2 of the stud bolt 21 to move. Since a force is concentrated on the rising portion, a large stress is generated, but by applying the R chamfers 22 and 23 to this portion, this stress can be relaxed and the strength of the stud bolt 21 can be improved.

Further, an embodiment of the stud bolt of the invention described in claim 3 will be described with reference to FIG. FIG. 3 is an external view of an embodiment of the stud bolt according to the third aspect of the invention. In FIG. 3, the stud bolt 31 of the embodiment of the invention described in claim 3 has substantially the same structure as the stud bolt 1 of the embodiment of the invention described in claim 1, and further the tip side screw portion of the support portion 4 is provided. A hexagonal portion 32, which is a knob portion, is provided at the end on the 5 side.

A method of attaching the propulsion coils 6a and 6b to the side wall 7 using the stud bolt 31 having the above-mentioned structure will be described. First, the side wall-side threaded portion 2 of the stud bolt 31 is screwed onto the side wall 7 into the insert 9 provided on the side wall 7, and the stud bolt 31 is fixed. Then, the two layers of the propulsion coils 6a and 6b are fixed by tightening them with the washer 10 and the nut 11.

As a result, the stud bolt 31 according to claim 3
Is the propulsion coil 6 as in the first and second embodiments.
Improvement of mounting accuracy of a and 6b and propulsion coils 6a and 6b
It has the strength corresponding to the stress caused by the force acting on. Further, when the stud bolt 31 is screwed into the insert 8 of the side wall 7 by providing the hexagonal portion 32 at the end of the support portion 4 of the stud bolt 31 on the tip side screw portion 5 side, it can be easily screwed in using a spanner or the like. Therefore, workability is further improved.

Further, another embodiment of the stud bolt according to claims 1 to 3 will be described with reference to FIG. Figure 4
FIG. 7 is a transverse cross-sectional view showing another embodiment of the stud bolt according to claim 1 and embedded in the side wall.

Referring to FIG. 4, a stud bolt of another embodiment.
41 is the side wall side threaded portion 2 in the embodiment of the invention described in claim 1.
Is a columnar mounting portion 42, and a protrusion for improving adhesiveness, for example, a spiral protrusion 42 is provided on the outer peripheral side surface thereof.

A method of attaching the propulsion coils 6a and 6b to the side wall 7 using the stud bolt 41 having the above-described structure will be described. The stud bolt 41 is directly embedded in the side wall 7 of the mounting portion 42, and similarly to the other embodiments, the two-layer propulsion coils 6a and 6b are inserted into the support portion 4 of the stud bolt 41 and tightened with the washer 10 and the nut 11.

As a result, in another embodiment of the invention as set forth in claim 1, the mounting portion 42 of the stud bolt 41 can be directly embedded in the side wall of the track of the concrete having a cylindrical shape,
Further, the stud bolt 41 can be firmly fixed to the track side wall 7 by the protrusion 42 provided on the outer peripheral side surface thereof. Further, the work of attaching the stud bolt 41 to the side wall 7 is reduced, and the workability can be further improved.

Further, an embodiment of a method of attaching the propulsion coils 6a and 6b of the invention described in claim 4 will be described with reference to FIG. FIG. 8 is a cross-sectional view showing a state in which the propulsion coils 6a and 6b are attached by an embodiment of the method of attaching the propulsion coil stud bolts according to the fourth aspect of the present invention.

In FIG. 8, first, the side wall side screw portion 2 of the stud bolt 1 is screwed to an insert 9 provided at a predetermined position on the side wall 7 of the track to fix the stud bolt 1. Then, the first layer propulsion coil 6a via the flange 2
Before mounting the second layer propulsion coil 6b, a spacer such as a washer 10 is interposed in the stud bolt 1. Then, the second layer propulsion coil 6b is attached to the outside thereof, and the washer 10 and the nut 11 are attached.
Then, the propulsion coils 6a and 6b are attached to the track side wall 7 by screwing.

In another embodiment of this resulting attachment method,
By installing a washer 10 which is a spacer between the first layer propulsion coil 6a and the second layer propulsion coil 6b, the two-layer propulsion coils 6a, 6 are formed by the washer 10.
Since b is separated, it is possible to prevent friction that occurs when the propulsion coil expands or contracts due to electrical or mechanical vibration or thermal action that occurs when the train runs. Furthermore, it is possible to prevent the propulsion coils 6a and 6b from being cracked or broken due to the scratches caused by the friction. That is, by using the stud bolt 1 for attaching the propulsion coil to attach the propulsion coils 6a, 6b to the side wall 7 of the raceway, the washer 10 can be easily attached to the two-layer propulsion coils 6a, 6
can be inserted between b, and thereby the propulsion coil 6
It is possible to prevent cracks caused by friction between a and 6b. Other embodiments of the method of attaching the propulsion coils 6a and 6b described above can also be used in other embodiments of the stud bolt, and the same effect can be obtained.

[0041]

As described above, according to the present invention,
The propulsion coil can be mounted on the mounting surface of the side wall of the track without directly contacting it, and high mounting accuracy can be obtained by a simple mounting work, and necessary strength can be obtained even with a large load during train running. Further, since the external force applied to the propulsion coil is mitigated, it is possible to prevent cracks due to friction generated between the layers of the propulsion coil.

[Brief description of drawings]

FIG. 1 is an outline view of a stud bolt for mounting a propulsion coil according to a first embodiment of the invention as set forth in claim 1.

FIG. 2 is an external view of an embodiment of a stud bolt for mounting a propulsion coil according to the invention of claim 2.

FIG. 3 is an external view of an example of a stud bolt for mounting a propulsion coil according to the third aspect of the invention.

FIG. 4 is an outline view of a stud bolt for mounting a propulsion coil according to a second embodiment of the invention described in claim 1.

FIG. 5 is an outline view of a propulsion coil for using the stud bolt for mounting the propulsion coil of the present invention.

FIG. 6 is a cross-sectional view showing a state in which the propulsion coil is attached to the side wall of the raceway by using the stud bolt for attaching the propulsion coil according to the first aspect of the invention.

FIG. 7 relates to a method of attaching a propulsion coil to a track using a stud bolt for attaching a propulsion coil of the present invention, (a) is a transverse cross-sectional view in which a propulsion coil and a levitation guide coil are attached to a side wall of the race, (B) is a front view of (a).

FIG. 8 is a cross-sectional view showing a propulsion coil attachment state according to an embodiment of a propulsion coil attachment method using the propulsion coil attachment stud bolts of the present invention.

9A and 9B relate to a conventional method of attaching a propulsion coil, wherein FIG. 9A is a cross-sectional view in which a propulsion coil and a levitation guide coil are attached to a side wall of a track, and FIG. 9B is a front view of FIG. 9A. ..

[Explanation of symbols]

 1 ... Propulsion coil mounting stud bolt 2 ... Side wall screw part 3 ... Flange 4 ... Support part 5 ... Tip side screw part 6a, 6b ... Propulsion coil 7 ... Orbital side wall

Claims (4)

[Claims] 1. A support portion, which is provided at a central portion of a columnar main body and supports a propulsion coil that applies a propulsive force by an electromagnetic action to an on-vehicle coil mounted on a vehicle, and a projection at one end of the support portion. A mounting portion that is formed to have a portion and that is mounted on the side wall of the track on which the propulsion coils are arranged, and a flange that is formed between the support portion and the mounting portion and that determines the mounting position of the propulsion coil, A stud bolt for attaching a propulsion coil, comprising: a fastening portion formed at the other end of the support portion and having fastening means for fastening the propulsion coil to the support portion. 2. The propulsion coil mounting according to claim 1, wherein at least one of a joint portion between the mounting portion and the flange or a joint portion between the flange and the supporting portion is chamfered. Stud bolt. 3. The stud bolt for mounting a propulsion coil according to claim 1, wherein a knob portion is provided on a part of the support portion. 4. A step of inserting the mounting portion of the stud bolt for mounting a propulsion coil according to claim 1 into the side wall of the track, and mounting the flange by contacting the mounting surface of the side wall of the track. And a mounting portion for mounting the stud bolt between the layers of the propulsion coil provided with mounting holes for the stud bolt,
A step of inserting a spacer for separating the propulsion coil and attaching the propeller coil over the support portion over two layers; and a fastening means for fastening the propulsion coil to the fastening portion after attaching the propulsion coil to the stud bolt. And fixing the propulsion coil to the side wall of the raceway.