JPH06237570A - Ground coil device and its manufacture - Google Patents

Abstract

PURPOSE:To provide a ground coil device not taking time in maintenance and its manufacture. CONSTITUTION:This device is equipped with a coil 3, which is formed by winding a conductor 1 covered with an insulating member 2, a cover 4, which surrounds the molded coil 3 and also in which a plurality of mounting ribs 5 are formed, and a bush 12, which is formed longer than the thickness of the mounting rib 5 and consists of a nonmagnetic substance having a mounting hole 13 and is buried in the mounting rib 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ground coil device for a magnetic levitation railway and a method for manufacturing the same.

[0002]

2. Description of the Related Art FIG. 8 shows, for example, Japanese Utility Model Laid-Open No. 51-69211.
A plan view showing a conventional ground coil device disclosed in Japanese Patent Publication No.
9 is a sectional view of the coil device of FIG. 8 taken along line IX-IX,
10 is a cross-sectional view showing a usage state of the above-ground coil device in FIG. 8, and FIG. 11 is a cross-sectional view showing details of a mounting portion of the above-ground coil device in FIG. In each drawing, 1 is a conductor forming a coil, 2 is a prepreg-shaped insulating tape made of a semi-curable insulating member wound around the conductor 1, and the conductor 1 wound with this insulating tape 2 is wound around. Coil 3
Is formed. Reference numeral 4 denotes an outer cover that surrounds the coil 3 with glass short fiber reinforced resin to insulate and hold the coil 3, 5 denotes a plurality of mounting ribs formed on the side of the outer cover 4, and 6 denotes each mounting rib 5. It is a mounting hole. The above ground coil device 7 is configured by the above 1 to 6. Further, 8 is a concrete track, 9 is an insert having a threaded portion embedded in the side wall of the concrete track 8, and is provided at a position corresponding to each mounting rib 6 of the ground coil device 7. Numeral 10 is a bolt which is inserted into each mounting hole 6 of the ground coil device 7 via a washer 11 and screwed to an insert 9. The ground coil device 7 is fixed to the side wall of the track 8 with each mounting rib 5 via the washer 11. is doing.

Next, a method of manufacturing the ground coil device 7 will be described. First, a conductor 1 in which a prepreg-shaped insulating tape 2 in which a synthetic resin having heat resistance is impregnated with a semi-cured resin is wound is wound into a coil. Next, the conductor wound in a coil shape is cured with a semi-cured resin at a predetermined temperature and pressure to form the molded coil 3 having a predetermined dimension.
Next, the periphery of the forming coil 3 is wrapped with a sheet-shaped semi-curable short glass fiber reinforced resin called a sheet molding compound (hereinafter referred to as SMC) and housed in a predetermined mold, and a heating / pressurizing process is performed. By doing so, the molded coil 3 is surrounded and insulated, and the mounting rib 5 is attached.
The coil device 7 is completed by forming the outer cover 4 having
Here, as the SMC, for example, a thermosetting polyester resin and a glass short fiber reinforced substrate are compounded and formed into a sheet having a thickness of about 2 mm. In consideration of the fluidity in the above, the glass short fibers are generally selected so as to contain about 30% of 3 to 6 mm (maximum about 25 mm).

[0004]

As described above, in the conventional ground coil device, the mounting ribs 5 made of resin are tightened with the bolts 10. Therefore, when the vehicle body is driven, the vehicle body is driven in the opposite direction to the levitation of the vehicle body. Of the mounting rib 5 of the jacket 4 because electromagnetic reaction force, that is, external force in each direction, such as a direction opposite to the traveling direction of the vehicle body and a direction opposite to braking when braking the vehicle body, is further applied and a tightening force is applied by the bolt 10. Since the bolt 10 for tightening the bolt is apt to be loosened, it is necessary to regularly inspect the tightening portion, and there is a problem that inspection and maintenance take time.

The present invention has been made in order to solve the above problems, and an object of the present invention is to obtain a ground coil device and a method of manufacturing the same which does not require troublesome inspection and maintenance work of the tightening portion.

[0006]

A ground coil device according to claim 1 of the present invention comprises a coil formed by winding a conductor covered with an insulating member, a coil surrounding the coil and a plurality of mounting ribs. It is provided with a formed envelope and a bush made of a non-magnetic material having a length longer than the thickness of the mounting rib and having a mounting hole and embedded in the mounting rib.
According to a second aspect of the present invention, there is provided a method of manufacturing a ground coil device, wherein a conductor covered with a semi-curable insulating member is wound in a coil shape, and the conductor wound in the coil shape is heated to form a semi-curable insulating member. To form a molded coil, place semi-curable short glass fiber reinforced resin around the molded coil, and place bushes made of non-magnetic material at multiple locations to form mounting ribs, The housing is housed, and the semi-curable short glass fiber reinforced resin is heat-pressed to hold the coil insulatively and to form a jacket for holding the bush on the mounting rib.

[0007]

In the ground coil device according to the present invention, the bush embedded in the mounting rib acts on the mounting rib against the tightening force that supports the ground coil and the external force that acts on the ground coil device. Reduce external force.

[0008]

【Example】

Example 1. Embodiment 1 of the present invention will be described below with reference to the drawings. 1 is a sectional view showing a ground coil device according to a first embodiment of the present invention, and FIG. 2 is a sectional view showing details of a mounting portion of the ground coil device in FIG. In each figure,
Descriptions of Nos. 5, 8 to 11 are omitted because they are similar to the conventional ones. Reference numeral 12 is a cylindrical bush formed of a non-magnetic material (for example, stainless steel) having a bolt hole 13 and knurled on the outer periphery, and both ends thereof project from the surface of the mounting rib 5 by a predetermined length, for example, 1 mm. The mounting rib 5 is formed to have a thickness longer than that of the mounting rib 5, and the mounting rib 5 is embedded with the knurled portion so as to bite into the mounting rib 5. The above ground coil device 14 is formed by the above 2 to 5 and 8 to 13.

Next, a method of manufacturing the ground coil device 14 will be described. As in the conventional case, the conductor 1 covered with the insulating tape 2 is wound into a coil, and the coiled conductor is molded at a predetermined temperature and pressure to obtain a molded coil 3. Then, the outer circumference of the forming coil 3 is surrounded by SMC, and the bush 12 is placed at a place where the mounting rib 5 is formed and housed in a mold, and heating / pressurizing processing is performed, whereby the mounting rib 5 is formed. A ground coil device 14 in which a bush 12 having a bolt hole 13 is embedded is constructed.

The above-ground coil device 1 formed as described above
As shown in FIG. 2, the bolt 4 is attached to the track 8 by inserting the bolt 10 having the washer 11 inserted into the side wall of the track 8 into the bolt hole 13 and screwing the bolt 10 into the insert 9 as shown in FIG. . Track 8 of this ground coil device 14
As shown in the drawing, the bush 12 is formed to be longer than the thickness of the mounting rib 5, and the coil device 14 is mounted via the bush 12 by the washer 11 and the bolt 10. Therefore, the mounting rib 5 of the ground coil device 14 is prevented from being affected by the tightening force of the bolt 10 and the external force applied when the vehicle body is driven. In addition, since the outer circumference of the bush 12 is knurled, the mechanical strength (push-out strength) of the interface between the bush 12 and the resin forming the jacket 4 is improved, and the suction force and repulsion when passing the vehicle body are improved. It also exerts sufficient strength against force. In addition, bush 12
Is made of a non-magnetic metal, sufficient strength is exhibited and the eddy current loss generated when the vehicle passes through is extremely reduced.

Embodiment 2. 3 is a cross-sectional view showing a ground coil device according to a second embodiment of the present invention. The ground coil device 14 in FIG. 3 has a track 8 of a bush 15 whose length is longer than the thickness of the mounting rib 5 as in the first embodiment. A brim having a diameter larger than the outer diameter of the bush 15 is formed at one end opposite to the outer surface of the bush 15, and the outer diameter portion is knurled to be integrally molded with the outer cover 4. In addition to the effect, the push-out strength of the bush 15 can be further improved.

Embodiment 3. FIG. 4 is a cross-sectional view showing a ground coil device according to a third embodiment of the present invention. The ground coil device 14 in FIG. , Bush 16
Forming a collar with a diameter larger than the outer diameter of
The outer diameter portion is knurled and is integrally formed with the outer cover 4, so that the same effect as that of the first embodiment can be obtained and the push-out strength of the bush 16 can be further improved.

Embodiment 4. 5 is a sectional view showing a ground coil device according to a fourth embodiment of the present invention. The ground coil device 14 in FIG. 5 has a bush 17 whose length is formed longer than the thickness of the mounting rib 5 as in the first embodiment. The outer periphery of the above is eccentrically provided with unevenness in the length direction and is integrally formed with the outer cover 4 so that the same effect as that of the first embodiment can be obtained.

Example 5. FIG. 6 is a sectional view showing a ground coil device according to a fifth embodiment of the present invention. The ground coil device 14 in FIG. 6 uses a bush 18 made of ceramic and has a length of the mounting rib 5 similar to that of the fourth embodiment. Longer than the thickness, eccentric to the outer periphery to form unevenness in the length direction,
The bush 18 is integrally formed with the outer cover 4 to obtain the same effect as that of the first embodiment.

Embodiment 6. FIG. 7 is a sectional view showing a ground coil device according to a sixth embodiment of the present invention. In the ground coil device 14 shown in FIG. Similarly, the length is longer than the thickness of the mounting rib 5, the outer periphery is eccentric to form unevenness in the length direction, and this bush 19 is formed integrally with the outer cover 4 to obtain the same effect as that of the first embodiment. And the effect of further improving the adhesiveness with the jacket 4.

[0016]

As described above, according to claim 1 of the present invention, a coil formed by winding a conductor covered with an insulating member, and a plurality of mounting ribs surrounding the coil are formed. According to a second aspect of the present invention, there is provided a jacket and a bush made of a non-magnetic material having a mounting hole formed with a length longer than the thickness of the mounting rib and embedded in the mounting rib. A conductor coated with a curable insulating member is wound into a coil, and the conductor wound in a coil is heated to cure the semi-curable insulating member to form a molded coil. In addition to placing the glass short fiber reinforced resin, the bushes made of non-magnetic material are placed in multiple places forming the mounting ribs and housed in the mold, and the semi-curable glass short fiber reinforced resin is heated and pressed. Enclose and remove the forming coil Since so as to form a jacket for holding the bushes on the rib, the ground coil device and a manufacturing method thereof troublesome maintenance work is not applied can be obtained.

[Brief description of drawings]

FIG. 1 is a sectional view showing a ground coil device according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view showing details of a mounting portion of the ground coil device of FIG.

FIG. 3 is a sectional view showing a ground coil device according to a second embodiment of the present invention.

FIG. 4 is a sectional view showing a ground coil device according to a third embodiment of the present invention.

FIG. 5 is a sectional view showing a ground coil device according to a fourth embodiment of the present invention.

FIG. 6 is a sectional view showing a ground coil device according to a fifth embodiment of the present invention.

FIG. 7 is a sectional view showing a ground coil device according to Embodiment 6 of the present invention.

FIG. 8 is a plan view showing a conventional ground coil device.

9 is a sectional view taken along line IX-IX of the ground coil device in FIG.

FIG. 10 is a cross-sectional view showing a usage state of the ground coil device in FIG.

11 is a cross-sectional view showing details of a mounting portion of the ground coil device in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 conductor 2 insulating member (insulating tape) 3 forming coil 4 jacket 5 mounting rib 6 bolt hole (mounting hole) 12 bush 14 ground coil device

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification number Reference number within the agency FI Technical indication location B29L 31:00 4F (72) Inventor Hideyuki Yamada 1-4-1 Mei Station, Nakamura-ku, Nagoya Tokai Passenger Railway Co., Ltd. (72) Inventor Yoshifumi Itabashi 8-1-1 Tsukaguchi Honcho, Amagasaki City Mitsubishi Electric Corporation Itami Works (72) Inventor Masayuki Kuwayama 8-1-1 Tsukaguchi Honmachi, Amagasaki Mitsubishi Electric Corporation Itami Works

Claims (2)

[Claims] 1. A ground coil device for propelling the vehicle body in cooperation with an on-board coil arranged on a side wall of a track and arranged on a vehicle body, wherein the ground coil device winds a conductor covered with an insulating member. The mounting rib formed of a non-magnetic material having a mounting hole that is formed to have a length longer than the thickness of the mounting rib and a jacket that surrounds the coil and has a plurality of mounting ribs. A ground coil device comprising a bush embedded in the ground coil device. 2. A conductor coated with a semi-curable insulating member is wound in a coil shape, and the conductor wound in the coil shape is heated to cure the semi-curable insulating member to form a molded coil, A semi-hardening glass short fiber reinforced resin is placed around the forming coil, and bushes made of a non-magnetic material are placed at a plurality of places forming the mounting ribs and housed in a mold, and the semi-hardening glass is placed. A method for manufacturing a ground coil device, characterized in that a short fiber reinforced resin is heated and pressed to surround the molded coil and to form an outer cover for holding the bush on the mounting rib.