JPH0446506A - Ground coil for magnetic levitation railroad - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention [Object of the Invention] (Industrial Field of Application) The present invention relates to a ground coil for floating railways, and particularly to a ground coil for floating railways having a ground coil molded with a molding material. Regarding the coil.

(Conventional Technology) Development of magnetic levitation trains that utilize superconductivity phenomena is underway as a next-generation ultra-high-speed transportation system.

This railway is equipped with superconducting coils on both cars, ground coils are laid on the track walls, and the electromagnetic attraction and repulsion generated between the superconducting coils and the ground coils are used to make the cars float. be. The general structure of such a magnetic levitation railway is generally shown in FIGS. 5 and 6.

That is, the vehicle, which is generally designated by 10, has a vehicle body 13 on which passengers and the like are carried, mounted on the upper part of a bogie frame 11 via air springs 12. A plurality of superconducting coils 14a and 14b are attached to both sides of the bogie underframe 11 of the vehicle 10 at appropriate intervals in the traveling direction of the vehicle 10.

Note that 15a, 15b and 16a, 16b are running vehicle frames and guide wheels provided at the bottom and sides of the bogie underframe 11, and are used to keep the vehicle 10 on the track 17 at the beginning of operation or when the magnetic levitation blades are few. The vehicle is driven along the following lines.

The track 17 on which the vehicle 10 travels has a U-shaped cross section, and the bottom track 18 has a plurality of levitation coils 19a and 19b that levitate the vehicle 10 by the electromagnetic action of the superconducting coils 14a and 14b. The side tracks 20a, 20b are buried in the running direction of the vehicle 10.
Propulsion coils 21a and 21b are buried in the running direction of the vehicle 10 to make the vehicle 10 run by the electromagnetic action of the superconducting coils 14a and 14b.

Each coil 19a, 19b, 21a, 21b is buried in the bottom track 18 and the side tracks 20a, 20b.
(19a and 21a are not shown) As shown in FIG. Insulating molded fins 22.23 are provided, and fixing bolts 24.25 are inserted into bolt holes formed in the fins 22.23 to be fixed to the bottom raceway 18 or the like.

In addition to the above-mentioned tracks, recently, with the aim of putting this magnetic levitation type railway to practical use, tracks with improved lift-to-drag ratio and high guidance have been adopted.

That is, the side tracks 20a on both sides in FIG.

In 20b, upper propulsion coils 31a and 31b are overlapped with lower propulsion coils 31a and 31b in a shifted manner, and levitation coils 32a and 32b are stacked and buried above the overlapped propulsion coils 31a and 31b. .

This not only improves the lift-to-drag ratio and the high guiding force, but also simplifies the installation work of the propulsion coil 31a and the like.

Note that 33a and 34a are power supply lines for supplying current to the propulsion coils 31a and 31b and the levitation coils 32a and 32b of the side track 20a.

(Problem to be solved by the invention) By the way, such propulsion coils and levitation coils generate a relatively large propulsive force due to the electromagnetic action of the superconducting coil during use.
In order to receive the floating blades, these are fixed to the raceway using strong fixing bolts.

That is, when the propulsion coils 31 and the levitation coils 32 are stacked in multiple layers and are attached to the side track 20 with the fixing bolts 24.25, the fixing bolts 24.25 are passed through the plurality of bolt holes drilled on the ground coil side. , it is screwed and fixed into a screw seat embedded in the side track 20 in advance. At this time, the bolt holes of the overlapping ground coils must be aligned accurately, and in this state, the centers of the screw seats buried in the side track 20 must be aligned and fixed with fixing bolts 24° and 25. . Therefore, the problem arises that positioning is difficult and it is not possible to easily attach a large number of ground coils to the side track 20 with high precision.

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention aims to provide a floating railway ground coil that allows a multilayer ground coil to be attached to the side track 20 relatively easily and with high precision.

[Structure of the invention]

(Means for Solving the Problems) The present invention provides a ground coil having a plurality of penetrating bolt mounting holes and formed using a molding material, in which at least two or more bolt mounting holes are installed at appropriate positions. A slitted cylinder made of metal or resin material such as FRP is inserted.

(Function) When inserting fixing bolts into the multiple bolt mounting holes provided in the ground coil coated with molding material and fixing the ground coils in multiple layers to the side track, first check the appropriateness of the ground coil. A cylinder with a slit is inserted into at least two or more bolt mounting holes at appropriate positions so that the outer diameter of the cylinder is brought into close contact with the bolt mounting hole, thereby positioning the ground coils. The ground coil in this state is placed on the side track,
Screw a fixing bolt with a diameter that can be smoothly inserted into the inner surface of the slit cylinder into the screw seat embedded in the side raceway, temporarily tighten it, and insert the fixing bolt into the bolt mounting hole at the grounding position. Similarly, since they are fixed to the side tracks one after another, the stacked ground coils can be laid relatively easily and with high precision. Regarding two or more holes for temporary fixing, if there is an error in the center distance between the ground coil and the track side, the error can be absorbed by appropriately adjusting the direction of the slit in the cylinder, and excessive application to the ground coil can be avoided. occurrence can be avoided.

(Embodiments) Examples of the floating railway ground coil of the present invention will be described below with reference to the accompanying drawings. In the floating railway ground coil of the present invention, the same parts as those of the conventional floating railway ground coil shown in FIGS. 5, 6, and 7 will be described with the same reference numerals, and detailed explanation thereof will be omitted. .

Similar to FIG. 7, FIG. 3 shows how the propulsion coil 41a and the levitation coil 42a are attached. That is, two layers of propulsion coils 41a made of a molding material are shifted and overlapped on the side track 20a, and fixed with fixing bolts 43, and then the two layers of propulsion coils 41a are stacked.
A levitation coil 42a is stacked on top of the levitation coil 42a, and this levitation coil 42a is fixed with a fixing bolt 44.

As shown in FIG. 4, the side track 20a is constructed by connecting long and narrow beams made of concrete or the like.

Slot holes 45.degree. 45 in which propulsion coils 41a and the like are buried are formed at appropriate intervals in one side wall surface of this beam. The fixing bolt 43 is in place in this slot 45.45.
A screw seat 46.46 for attaching the is embedded. Moreover, a screw seat 47 for attaching a fixing bolt 44 is embedded in the side wall surface of the beam.

The propulsion coils 41a, 41a have their wire shafts integrally molded with a molding material. Bolt mounting holes are also made during this molding process.

FIG. 1 shows an external view of a slitted cylinder 51 made of metal or FRP, and 51a is a slit cut along the entire length in the longitudinal direction. As an example, FIG. 2 shows a cylinder 51 with a slit shown in FIG. 1 in a two-layer propulsion coil 41a.
is inserted, and the two-layer propulsion coil 41a is temporarily positioned. Next, the fixing bolt 43a is inserted into the slitted cylinder 51, and is screwed into the screw seat 46a embedded in the side track 20a and fixed. FIG. The position where the slitted cylinder 51 is inserted is the propulsion coil 41a.
At least two or more suitable locations are selected from among the bolt through holes 53a drilled in the bolt holes 53a. Also, this cylinder with slits 5
1 has an outer diameter large enough to be smoothly inserted into the inner diameter of the bolt mounting hole 53a provided in the ground coil, and the inner diameter is large enough to allow the shaft portion 44a of the fixing bolt 43a to be smoothly inserted. Yes, there is no looseness between the two.

In this way, first, the slitted cylinder 51 is temporarily tightened to the side track 20a with the fixing bolt 43a.

Next, other bolt fixing positions are sequentially fixed to the side track 20a using the fixing bolts 43a. Finally, this portion is fully tightened again using the fixing bolt 43a that was initially temporarily tightened to firmly fix it to the side track 20a.

At this time, the slitted cylinder 51 may be removed before final tightening.

Note that the propulsion coil 41a is attached to the side track 2 using the fixing bolt 43a.
When fixing to 0a, tighten via adjustment plate 55, disc spring 57, washer 56, etc.

In the propulsion coil 41a installed in this way, the propulsion coil 4182 layer was first temporarily positioned with the slit cylinder 51, and then inserted into the slit cylinder 51 with the fixing bolt 43a and buried in the side track 20a. Since it is screwed into the screw seat 46a, the propulsion coil 41a
is temporarily fixed to the side track 20a. In this state, bolt mounting holes 53a made in other parts of the propulsion coil 41a and the corresponding side track 2
Align the screws g46a buried in the holes 0a and secure them by sequentially tightening them with the fixing bolts 43a. At this time, the center of the screw seat 46a buried in the side track 20a and the propulsion coil 4
The center of the bolt measuring hole 53a drilled in 1a is not necessarily completely aligned in terms of accuracy. Therefore, first, the fixing bolt 4 passed through the 51 part of the slit cylinder.
The position temporarily determined on the side track 20a in step 3a will be moved to some extent. This position is a cylinder with a slit 5
It is absorbed by the slit 51a portion of No. 1. Therefore, ultimately the fixing bolt 43a or the propulsion coil 41a
The multilayer ground coil can be relatively easily fixed to the side track 20a without excessive force acting on the bolt attachment hole 53a.

〔Effect of the invention〕

According to the floating railway ground coil of the present invention, the slit cylinder is smoothly inserted into at least two or more bolt mounting holes drilled in the multilayer ground coil, and the slit cylinder is temporarily positioned. The fixing bolt inserted through the cylinder is screwed into the screw seat embedded in the side raceway and temporarily tightened, then the fixing bolts in other positions are sequentially tightened, and finally the fixing bolt in the first slitted cylinder part is fully tightened. Because it is firmly fixed to the side track, even if the center line of the screw seat buried on the side track and the center line of the bolt mounting hole drilled in the propulsion coil do not match accurately, , the ground coil can be fixed to the side track with relatively good workability. In addition, since a cylinder with slits is used, even if there is some movement in the final position, this movement can be absorbed by the slits. Do not apply excessive force to the

[Brief explanation of drawings]

Figure 1 is an external view of the slitted cylinder of the present invention, Figure 2 is an enlarged sectional view of the main parts when the floating railway ground coil of the present invention is attached to a side track, and Figure 3 is a A side view showing the main parts when installing the coil on a concrete beam, Figure 4 is the ground coil IV-IV in Figure 3.
A cross-sectional view taken along the line and viewed in the direction of the arrow; Figure 5 is a cross-sectional view of a commonly used floating railway; Figures 6 and 7 are a cross-sectional view of a commonly used ground coil. It is a perspective view when it is attached to. 10... Levitating railway vehicle, 11... Bogie underframe. 12...Air spring, 13...Vehicle body, 14a
, 14b... superconducting coil, 15a, 15b...
Traveling axle, 16a, 16b --- Guide wheel, 17.
... Orbit, 18... Bottom orbit, 19a,
19b, 42a・=levitation coil, 20a, 20b
- side tracks, 21a, 21b, 41a - propulsion coils, 24, 25
．． 43.44...Fixing bolt, 45...Slot hole,
44a...fixing bolt shaft portion, 46, 46a,
47...Screw seat, 51...Cylinder with slit. 51a...Slit, 538...Bolt mounting hole. 55...Adjustment plate, 56...Washer, 5
7... Disc spring. Agent Patent Attorney Noriyuki ChikaFigure 1Figure 2Figure 2

Claims (1)

[Claims] In the ground coil formed with molding material,
A magnetic levitation railway site characterized in that a cylinder with slits is inserted into at least two bolt mounting holes of a ground coil, a fixing bolt is inserted into the cylinder with slits, and the cylinder is attached and fixed to a side track. upper coil.