JP2003158013A - Ground coil device for maglev railway - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the gaps between superconducting coils and propulsion coils. SOLUTION: Each coil housing section 21 of a ground coil device is formed of a bobbin section 19 around which a promotion coil 22 (23, 24) is wound so that the inner peripheral side of the coil 22 (23, 24) may be positioned on the side opposite to the center of the track of a levitation coil 18 and an outer frame section 20 which is put around the outer periphery of the coil 22 (23, 24). The promotion coil 22 (23, 24) is constituted of odd-numbered stage coils wound in oddnumbered stages from the levitation coil 18 side from the outer frame section 20 side of the coil housing section 21 and even-numbered stage coils wound in even-numbered stages from the levitation coil 18 side from the bobbin section 19 of the section 21.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic levitation railway ground coil device composed of a propulsion coil and a levitation coil which are armatures of a linear motor in a magnetic levitation railway.

[0002]

2. Description of the Related Art FIG. 16 is a cross-sectional view showing the structure of a magnetic levitation railway, FIG. 17 is a front view of a levitation coil, and FIG. 18 is a perspective view showing a procedure for mounting the levitation coil. 16 to 1
In FIG. 8, a body 3 and a bogie frame 4 are connected by an air spring 2 of a magnetically levitated vehicle 1, and a superconducting coil 5 is attached to a side surface of the bogie frame 4. On the other hand, on the ground side, the propulsion coil 7 and the levitation coil 8 are provided on the side wall 6a of the track 6 so as to face the superconducting coil 5, and the panel 9 made of concrete is used.
Is attached through. As shown in FIG. 11, the levitation coil 8 is formed by integrally molding two sets of 8-shaped coils 8a with resin, and is attached to the panel 9 by fastening means 10 such as bolts and nuts. The propulsion coil 7 is supported on the side opposite to the center side of the track 6 of the levitation coil 8 by a protruding mounting frame 9a formed on the panel 9.

Next, the winding procedure of the propulsion coil 7 will be described. 19 is a configuration diagram of the propulsion coil 7, and FIG. 20 is an explanatory diagram showing a winding procedure of the propulsion coil 7. In FIG. 19, the propulsion coil 7 is wound by a predetermined number of turns with a single cable and held by the binder 11, and for example, the length between AC is 3
Crossover 12a so that the pitch between m and BC is 2 m
.About.12d are provided. The propulsion coil 7 thus configured is manufactured by the procedure shown in FIG. First, in FIG. 20A, the transition portion 12 a at the end is wound around the reel 13. Then, the reel 1 is wound a predetermined number of times.
The first propulsion coil 7 is formed by binding the slits 13a of No. 3 with the binder 11 (FIG. 20 (b)). In this way, the transition portion 12b, the propulsion coil 7, and the transition portion 12 are sequentially arranged.
c, the propulsion coil 7 and the transition portion 12d are formed (see FIG. 2).
0 (c)). After that, the propulsion coil 7 is attached to the attachment frame 9a of the panel 9 while being pushed out from the reel 13. Then, a linear motor armature is configured by connecting three phases for each feeder section.

[0004]

As described above, in the conventional magnetic levitation railway ground coil device, the propulsion coil 7 wound around the reel 13 is attached to the panel 9 while being pushed out from the reel 13. Since it is not possible to attach a brim to each of the propulsion coils 7 to prevent it from collapsing, the propulsion coils 7 are likely to collapse when wound in multiple layers. For this reason, the propulsion coil 7 is wound one layer,
Since winding is performed in a step direction away from the center of the track 6 in order to secure the required number of turns, the gap G with the superconducting coil 5 serving as a field coil becomes large as shown in FIG. There is a problem that it is difficult to improve the efficiency of the linear synchronous motor. The present invention has been made to solve the above problems, and provides a magnetic levitation type ground coil device for a railway that can improve the efficiency by reducing the gap between the superconducting coil and the propulsion coil. The purpose is to do.

[0005]

SUMMARY OF THE INVENTION A magnetic levitation railway ground coil according to the present invention forms a plurality of propulsion coils in which a single cable is wound in even stages for each of the three phases, and the propulsion coils are connected in series. Connect to form the armature of a linear motor, and place the propulsion coil on the side opposite to the center side of the trajectory of the levitation coil so as to face the levitation coil that is integrally molded with resin and placed on the side wall of the trajectory. In a magnetic levitation railway ground coil device in which a superconducting coil and a propulsion coil mounted on a magnetic levitation vehicle can face each other, the inner circumference side of the propulsion coil is placed on the side opposite to the center side of the track of the levitation coil. A coil accommodating portion is formed by the winding core portion and an outer frame portion that extends along the outer peripheral side of the propulsion coil, and an odd-numbered stage coil wound from the outer frame portion side of the coil accommodating portion to an odd number stage from the levitation coil side, From the levitation coil side, It is obtained by constituting the propulsion coil in an even stage coil wound from a winding core portion of the Le compartment. Further, the cable is a pressure resistant cable whose main material is a flexible insulating material.

The flexible insulating material is ethylene propylene rubber. Moreover, the propulsion coils for each of the three phases are two to eight wound by a single cable. In addition, 2 to 8 propulsion coils for each phase are wound with one piece of cable as a unit, and the propulsion coils for 3 phases are made into concrete panels with a length of 5.4 to 21.6 m. The propulsion coils are attached to the track via a fixed frame so that the propulsion coils are aligned in the direction of the track. Further, a plurality of propulsion coils are fixed by a fixing frame so as to form a line in the direction of the track. The fixed frame is made of a non-magnetic material, and the levitation coil and the propulsion coil are attached to the track via the fixed frame. further,
Four levitation coils corresponding to one propulsion coil are arranged in the shape of a square, levitation coil groups are arranged in a line in the direction of the track and integrally molded, and the levitation coil groups are attached and fastened together. Is attached to the side wall of the track by

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1. 1 is a cross-sectional view of a magnetic levitation railway to which the first embodiment is applied, FIG. 2 is a configuration diagram of the first embodiment as seen from the rear, FIG. 3 is a front view showing a main part of FIG. 2, and FIG. 3 is a rear view and FIG. 5 is a perspective view of FIG. 1 to 5, reference numeral 14 is a track having side walls 14a formed on both sides. Reference numeral 15 denotes a magnetic levitation type vehicle that can travel in the track 14, and a vehicle body 15a and a bogie frame 15b are connected by an air spring 15c. Reference numeral 16 denotes a pair of superconducting coils mounted on the vehicle 15 and attached to the side surface of the bogie frame 15b. Reference numeral 17 denotes a pair of concrete panels, which are attached to the side wall 14a of the track 14.
Reference numeral 18 denotes a levitation coil attached to the panel 17 so as to be able to face the superconducting coil 16, and two sets of eight-shaped coil bodies 18a are arranged in a square shape, for example, thermosetting resin. It is integrally molded. Also, the levitation coil 1
8 is attached to the panel 17 through seven attachment holes 18b. Further, a projecting core portion 19 and an outer frame portion 20 surrounding the core portion 19 are formed on the side of the levitation coil 18 opposite to the center side of the track 14.

The winding core portion 19 and the outer frame portion 20 form a coil housing portion 21. Then, the inner peripheral sides of the later-described propulsion coils 22 to 24 are arranged along the winding core portion 19, and the outer frame portion 2
0 along the outer peripheral side of the propulsion coils 22 to 24 described later.
The propulsion coils 22 to 24 are arranged in the coil housing portion 21 as shown in FIG. 2. For example, the propulsion coil 22 is in the U phase, the propulsion coil 23 is in the V phase, and the propulsion coil 24 is in the W phase. 22a, 23a, 24a are each propulsion coil 22-24
It is the crossing part on the winding start side. 22b, 23b, 24
Reference symbol b, is a connecting portion to adjacent propulsion coils of the same phase, which are continuously connected by a single cable. Also, 22c, 2
3c and 24c are winding start portions of the propulsion coils 22 to 24,
22d, 23d, and 24d are winding end portions of the propulsion coils 22 to 24. Transition part 2 of each propulsion coil 22-24
2a to 24a are the end portions of the panel 17 and the cable connector 2
Connected to an adjacent propulsion coil (not shown) via
Each phase is connected in series. Propulsion coils 22 to 2 for each phase
4 and the connecting portions 22b to 24b are continuously connected to each other in three phases to form an armature of a linear motor.

Next, the winding procedure of the propulsion coil 23 will be described with reference to FIG.
Described in. The propulsion coils 22 and 24 are wound in the same winding procedure as the propulsion coil 23. In FIG. 6A, the transition portion 22 b of the propulsion coil 22 and the propulsion coil 24.
The crossover portion 24a is shown so that the related position can be seen.
First, the winding start portion 23c of the propulsion coil 23 is drawn into the coil housing portion 21, and is wound while the outer peripheral side is regulated by the outer frame portion 20 (FIG. 6B), and is sequentially wound inward (FIG. 6). (C), (d)). At this time, the winding core portion 19 is provided on the inner peripheral side.
The predetermined inner diameter is determined by the regulation. Like this one
The odd-numbered stage odd-numbered coils 23e are wound from the outer peripheral side toward the inner peripheral side. Then, the second stage (even stage)
As shown in FIG. 6 (e), the even-numbered coil 23f is wound from the inner peripheral side to the outer peripheral side while being regulated by the winding core portion 19 on the inner peripheral side (FIG. 6 (f), (g)). . Finally, Fig. 6 (g)
As described above, the winding end portion 23d is pulled out from the coil housing portion 21.

As described above, the first-stage (odd-numbered) odd-numbered coil 23e from the levitation coil 18 side is wound from the outer frame 20 side toward the winding core 19 side, and the second-stage (even-numbered stage). By winding the even-numbered stage coil 23f of the eye) from the winding core portion 19 side toward the outer frame portion 20 side, the winding start portion 23
Since c and the odd-numbered stage coil 23e and the winding end portion 23d and the even-numbered stage coil 23f are in the same plane, the height of the propulsion coil 23 in the stacking direction can be reduced as shown in FIG. The gap can be reduced. Note that FIG. 7 is a cross-sectional view taken along the line VII-VII in FIG.

Embodiment 2. 8 is a configuration diagram of the second embodiment as seen from the rear side, FIG. 9 is a rear view showing a main part of FIG. 8, and FIG. 10 is a sectional view taken along line XX of FIG. 8 to 1
0, 17 to 20 and 22 to 25 are the same as those in the first embodiment. 26 is a plurality of levitation coils 1
The fixing frame 8 is fixed using the upper mounting holes 18a so as to form a single line in the direction of the track 14 (see FIG. 1), and is formed of nonmagnetic metal such as stainless steel. As shown in FIG. 9, a plurality of levitation coils 18 are fixed by a fixing frame 26, and the winding procedure of FIG.
Propulsion coils 22-24 are formed as shown in FIG. Then, the levitation coil 18 and the propulsion coils 22 to 24 are integrated.
Is a bolt through the mounting hole 18a as shown in FIG.
It is attached to the panel 17 by a fastening means (not shown) such as a nut.

As described above, the plurality of levitation coils 18 are fixed by the fixing frame 26 so as to form one line in the direction of the track 14 (see FIG. 1), so that the fixing frame 26 can also serve as a mounting jig. Therefore, the work of attaching the panel 17 can be shortened. Also, the propulsion coils 22 to 2 of each of the three phases
4 are connected by one cable as one group unit and attached to a panel 17 having a length of 5.4 m to 21.6 m corresponding to three phases. Then, it is connected to the U-phase, V-phase, and W-phase of the next panel (not shown) via the cable connector 25. For example, when the propelling coils 22 to 24 are 6 coils in total for 3 phases of 2 coils for each phase, the length of the panel 17 is 5.4 m when the coil pitch is 0.9 m. And, in 24 coils for 3 phases of 8 coils for each phase,
When the coil pitch is 0.9 m, the length of the panel 17 is 21.
It will be 6m. In the first and second embodiments,
As the cables of the propulsion coils 22 to 24, by using a high withstand voltage cable whose main insulation is a highly flexible material such as ethylene propylene rubber, the minimum bending radius is 4.5 to 5 of the cable outer diameter. It can be doubled. Therefore, the window area of the propulsion coils 22 to 24 can be increased to lengthen the straight line portion, so that the thrust of the LSM is increased and the efficiency can be improved.

Further, in the first and second embodiments, the number of the propulsion coils 22 to 24 continuously wound with one cable is limited by the diameter of the winding drum that can be handled on the track 14. However, 2 to 8 coils are suitable. Cable connector 2 with more than 2 coils
The number of 5 can be reduced. Therefore, from 2 coils to 8
It is advisable to make one coil unit by continuously winding the coil with one cable. In this way, the propulsion coils 22 to 24 in units of one group are arranged on the side wall 14a of the track 14 integrally with the levitation coil 18 at U-phase, V-phase, and W-phase at an electrical angle of 120 degrees. Since it is flexible by using a cable whose main insulation is a highly flexible material such as ethylene propylene rubber,
Since it is not necessary to require strict accuracy in the plane accuracy of the side wall 14a, the construction cost of the track 14 can be reduced. Further, in the first and second embodiments, by installing the concrete panel 17 in the factory building and manufacturing the propulsion coils 22 to 24, the efficiency of the winding work can be improved. Although the concrete panel 17 is used in the second embodiment, the same effect can be expected with a concrete beam structure that is self-supporting with respect to the track 14 (see FIG. 1).

Embodiment 3. 11 is a configuration diagram of the third embodiment as viewed from the rear, FIG. 12 is a front view showing the main parts of FIG. 11, FIG. 13 is a rear view of FIG. 12, and FIG. 14 is a perspective view showing the main parts of FIG. 15 and 16 are sectional views taken along line XV-XV in FIG. In FIGS. 11 to 15, 17 is the same as that of the first embodiment. 27 is a superconducting coil 1
6 (see FIG. 1) is a levitation coil that is attached to the panel 17 so as to be opposed to it. For example, 6 sets of levitation coil groups 28 in which an 8-shaped coil body 27a is arranged in a square shape are thermosetting resins or the like. It is integrally molded with. The levitation coil group 2
8 are arranged in a line in the direction of the track 14 (see FIG. 1). Then, 13 mounting holes 27b are formed on the upper side of the levitation coil 27 on both sides of the 8-shaped coil body 27a.
And 7 mounting holes 27 on both sides of the levitation coil group 28 at the bottom.
c and 12 mounting holes 27d are provided in the middle part. Further, six projecting winding core portions 29 are formed on the side opposite to the center side of the track 14 (see FIG. 1) of the levitation coil 27, and outer frame portions 30 are formed so as to surround the winding core portion 29. There is. It should be noted that the coil core 3 and the outer frame 30 together form the coil housing 3
1 is formed.

Reference numeral 32 is a U-phase propulsion coil, 33 is a V-phase propulsion coil, and 34 is a W-phase propulsion coil. The winding procedure is performed in the same manner as in FIG. 6 of the first embodiment. 32a,
Reference numerals 33a and 34a are connecting portions on the winding start side of the propulsion coils 32 to 34. Reference numerals 32b, 33b, and 34b are transition portions to adjacent propulsion coils 32 to 34 of the same phase, and are continuously connected by a single cable. Reference numerals 32c, 33c and 34c are winding start portions of the propulsion coils 32 to 34. 32d, 3
3d and 34d are winding end portions of the propulsion coils 32 to 34. Transition parts 32a to 34 of the respective propulsion coils 32 to 34
a is connected to an adjacent propulsion coil (not shown) via the cable connector 35 at the end of the panel 17, and the respective phases are connected in series. And the propulsion coils 32-34 of each phase
The transition parts 32b to 34b are continuously connected in three phases for each feeding section to form an armature of a linear motor.

In the third embodiment, each propulsion coil 32
The minimum bending radius should be 4.5 to 5 times the outer diameter of the cable by using a high withstand voltage cable whose main insulation is a highly flexible material such as ethylene propylene rubber as the cable of ~ 34. You can Therefore, since the window areas of the propulsion coils 32 to 34 can be increased to lengthen the straight line portion, the thrust of the LSM is increased and the efficiency can be improved. In addition, in the first and second embodiments, the number of the propulsion coils 32 to 34 continuously wound with one cable is limited by the diameter of the winding drum that can be handled on the track 14. 2 to 8 coils are suitable. With two or more coils, the number of cable connectors 35 can be reduced. Therefore, it is preferable to continuously wind 2 to 8 coils with a single cable as one group unit. In this way, the propulsion coils 32 to 34 in units of one group are U-phase, V-phase,
As the W phase, it is arranged on the side wall 14a of the track 14 integrally with the levitation coil 27 at an electrical angle of 120 degrees. Since there is flexibility by using a cable whose main insulation is a highly flexible material such as ethylene propylene rubber, it is not necessary to require strict accuracy in the plane accuracy of the side wall 14a of the track 14. It is possible to reduce the construction cost. Further, in the third embodiment, by installing the panel 17 made of concrete in the building of the factory and manufacturing the propulsion coils 32 to 34, the efficiency of the winding work can be improved. Although the concrete panel 17 is used in the third embodiment, the same effect can be expected with a concrete beam structure that is self-supporting with respect to the track 14 (see FIG. 1).

[0017]

According to the present invention, the coil accommodating portion is formed on the side opposite to the center side of the orbit of the levitation coil, and is wound from the outer frame portion side of the coil accommodating portion at an odd number of steps from the levitation coil side. By forming the propulsion coil with the odd-numbered stage coil and the even-numbered coil wound from the levitation coil side to the even-numbered stage from the winding core side of the coil housing portion, the winding start portion and the first-stage and winding end portions are formed. Since the second step is on the same plane, the height of the propulsion coil in the stacking direction can be reduced, so that the gap with the superconducting coil can be reduced and the efficiency of the LSM can be improved. In addition, since the cable is flexible because it is a pressure resistant cable whose main material is a flexible insulating material, it is not necessary to require strict accuracy in the plane accuracy of the side wall of the track, which reduces the track construction cost. Can be planned. Also, by using ethylene propylene rubber as the flexible insulating material, the minimum bending radius can be set to 4.5 to 5 times the outer diameter of the cable. Therefore, the window area of the propulsion coil can be increased to lengthen the straight portion. Therefore, the thrust of the LSM is increased and the efficiency can be improved.

Further, since two to eight windings for each of the three-phase propulsion coils are wound with one cable, the winding is efficiently performed without being limited by the diameter of the winding drum that can be handled on the track. You can do the work. Furthermore, the number of cable connectors can be reduced by winding two or more propulsion coils with one cable. In addition, two to eight propulsion coils for each phase are wound as a unit with one cable, and the propulsion coils for three phases are used for concrete panels with a length of 5.4 to 21.6 m. By mounting the propelling coils on the track through a fixed frame so that the propulsion coils are aligned in a line in the direction of the track, the panel 17 made of concrete is installed in the factory building to manufacture the propulsion coils. It is possible to improve. Further, since the plurality of propulsion coils are fixed by the fixing frame so that they are arranged in a line in the direction of the track, the fixing frame can also serve as a mounting jig, so that the mounting work on the panel can be shortened. Further, since the fixed frame is made of a non-magnetic material and the levitation coil and the propulsion coil are attached to the track via the fixed frame, it is possible to prevent the fixed frame from being overheated by the leakage magnetic flux. Furthermore, 1
Four levitation coils corresponding to each propulsion coil are arranged in the shape of a square and the levitation coil groups are arranged in a line in the direction of the track and integrally molded, and the levitation coil groups are tracked by fastening means. The number of fastening means can be reduced by attaching to the side wall.

[Brief description of drawings]

FIG. 1 is a sectional view of a magnetic levitation railway to which a first embodiment of the present invention is applied.

FIG. 2 is a configuration diagram of the first embodiment viewed from the back side.

FIG. 3 is a front view showing a main part of FIG.

FIG. 4 is a rear view of FIG.

5 is a perspective view of FIG. 3. FIG.

FIG. 6 is an explanatory diagram showing a winding procedure of the propulsion coil 23.

7 is a cross-sectional view taken along the line VII-VII in FIG.

FIG. 8 is a configuration diagram of a second embodiment of the present invention viewed from the back side.

9 is a rear view showing the main part of FIG.

10 is a cross-sectional view taken along line XX of FIG.

FIG. 11 is a configuration diagram of a third embodiment of the present invention viewed from the back side.

FIG. 12 is a front view showing a main part of FIG. 11.

FIG. 13 is a rear view of FIG.

FIG. 14 is a perspective view showing a main part of FIG.

15 is a sectional view taken along line XV-XV in FIG.

FIG. 16 is a sectional view showing a configuration of a conventional magnetic levitation railway.

FIG. 17 is a front view showing the levitation coil of FIG. 16.

FIG. 18 is a perspective view showing how to attach the levitation coil shown in FIG.

19 is a configuration diagram of the propulsion coil 7 of FIG.

20 is an explanatory diagram showing a winding procedure of the propulsion coil 7 in FIG.

[Explanation of reference signs] 14 tracks, 14a sidewalls, 15 vehicles, 16 superconducting coils, 17 panels, 18 levitation coils, 19, 29
Winding core part, 20,30 outer frame part, 21,31 coil storage part, 22-24, 32-34 propulsion coil, 23e
Odd stage coil, 23f Even stage coil, 26 Fixed frame,
27 levitation coil, 28 levitation coil group.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yoshihiro Jizo             2-3 2-3 Marunouchi, Chiyoda-ku, Tokyo             Inside Ryo Electric Co., Ltd. (72) Inventor Nobuyoshi Monzen             2-3 2-3 Marunouchi, Chiyoda-ku, Tokyo             Inside Ryo Electric Co., Ltd. (72) Inventor Masamichi Ogawa             1-4, Mei Station, Nakamura-ku, Nagoya City, Aichi Prefecture               Tokai Passenger Railway Co., Ltd. F-term (reference) 5H113 AA06 BB03 CC04 CC08 CD04                       CD06 CD08 CD13 CD14 DA01                       DA02 DA05 DB03 DB09 DB10                       DB14 DB19 DC03 DC09 DC14                       DC19

Claims (8)

[Claims] 1. A plurality of propulsion coils in which a single-strand cable is wound in even stages for each of the three phases is formed, and the propulsion coils are connected in series to form an armature of a linear motor, which is integrally molded of resin. Then, the propulsion coil is arranged on the side opposite to the center side of the track of the levitation coil so as to face the levitation coil arranged on the side wall of the track, and the superconducting coil and the propulsion mounted on the magnetic levitation vehicle are arranged. In a magnetic levitation railway ground coil device that can be opposed to a coil, a winding core portion along which the inner circumferential side of the propulsion coil is provided on the side opposite to the center side of the track of the levitation coil, and the propulsion coil An outer frame portion that runs along the outer peripheral side forms a coil housing portion, and odd-numbered coils wound from the outer frame portion side of the coil housing portion at odd stages from the levitation coil side and from the levitation coil side. The above coils are collected in even-numbered stages A magnetic levitation type ground coil device for a railway characterized in that the propulsion coil is constituted by an even-numbered stage coil wound from the winding core side of the storage section. 2. The magnetic levitation railway ground coil device according to claim 1, wherein the cable is a pressure resistant cable whose main material is a flexible insulating material. 3. The magnetic levitation railway ground coil device according to claim 2, wherein the flexible insulating material is ethylene propylene rubber. 4. The propelling coil for each of the three phases is formed by winding two to eight winding coils with one cable, and the propelling coil according to any one of claims 1 to 3, wherein Magnetically levitated ground coil device for railways. 5. A concrete having a length of 5.4 m to 21.6 m of the above-mentioned propulsion coils for three phases, with two to eight propulsion coils of each phase wound by one cable as a unit. The magnetic levitation railway according to any one of claims 1 to 3, characterized in that the propulsion coils are attached to the track through a fixed frame so that the propulsion coils are arranged in a line in the direction of the track. Ground coil device. 6. The magnetic levitation railway land according to any one of claims 1 to 5, wherein a plurality of propulsion coils are fixed by a fixing frame so as to form one row in the track direction. Upper coil device. 7. The magnetic levitation railway ground according to claim 6, wherein the fixed frame is made of a non-magnetic material, and the levitation coil and the propulsion coil are attached to the track via the fixed frame. Coil device. 8. A levitation coil group in which four levitation coils are arranged in a square shape corresponding to one propulsion coil, and the levitation coils are integrally formed by arranging them in a line in the direction of the orbit. The magnetically levitated railway ground coil device according to any one of claims 1 to 5, wherein the group is attached to the side wall of the track by fastening means between the groups.