JPH11308156A - Cross induction line - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cross induction line which can highly maintain the posi tion detection precision of a movable body such as a train for long time and which is superior in flexibility. SOLUTION: A cross induction line is provided with a substrate 2, an electric line 3 which is installed at least for more than one in a longitudinal direction on the substrate 2 and in which an induction line part 3a where two insulating conductors are arranged in parallel and a twisting line part 3b where the two insulating conductors are twisted are alternately formed in the longitudinal direction. In such a case, a part or whole twisting line part 3b is inserted into a pipe 4 or the twisting line part 3b is sandwiched by two thermal melting tapes extending in the longitudinal direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cross guidance line used for detecting a position of a train, and more particularly to a cross guidance line in which high position detection accuracy is maintained for a long time.

[0002]

2. Description of the Related Art For detecting the position of a moving body such as a train, an electric wire called a crossed induction wire having two sets of insulated conductors is used. This crossing guide wire is laid with two insulated conductors crossing each other at a predetermined distance in the longitudinal direction along the moving path of a moving body such as a train, and the relative positions thereof are reversed. . When a signal is sent from an antenna of a moving body such as a train to the laid crossing guide wire, a potential difference (voltage) is generated in the insulated conductor in a parallel portion of the electric wire by electromagnetic induction. By measuring the voltage at this time, the position of a moving object such as a train can be detected.

FIG. 9 is a view showing an example of a conventional cross guide wire. The cross guide wire 25 is composed of a substrate 2 made of glass fiber reinforced resin and a guide wire portion in which two insulated conductors are arranged in parallel. 3a and an electric wire 3, in which a stranded wire portion 3b obtained by twisting the two insulated conductors in the longitudinal direction is alternately formed, an adhesive tape 26, a nonwoven fabric 5, a tension member 6 made of a stranded steel wire, and polyethylene. And a sheath 7 made of

The above-mentioned electric wires 3 are laid in the longitudinal direction on the substrate 2, and the guide wire portions 3 a formed on the electric wires 3 do not overlap with the guide wire portions 3 a formed on the other electric wires 2. Are arranged at predetermined intervals on the substrate 2 in the longitudinal direction. And the movement prevention of the electric wire 3 and the stranded wire portion 3b
The twisted wire portion 3b of the electric wire 3 for the purpose of fixing the twist of
On the upper side, an adhesive tape 26 is stuck in the longitudinal direction, and the electric wire 3 is fixed on the substrate 2. Further, an adhesive tape 26 is applied to a portion where the insulated conductor is branched from the stranded wire portion 3b and wired at a right angle to the stranded wire portion 3b in a direction perpendicular to the longitudinal direction. Further, a nonwoven fabric 5 is wound on the substrate 2 and the electric wire 3, and tension members 6 are provided on both sides of the substrate 2 along the longitudinal direction. Coated.

When a signal is transmitted from the antenna of a moving body such as a train to such a crossing guide line 25, the guide line portion 3a
The voltage is generated by induction in FIG.
As shown in FIG. 7, the voltage is measured as a voltage waveform corresponding to the position of the guide wire portion 3a, and the position of a moving object such as a train can be detected from the voltage waveform.

[0006]

However, in the conventional cross guide wire 25, the adhesive force of the adhesive tape 26 for fixing the electric wire 3 to the substrate 2 is not permanent, and the adhesive force of the adhesive tape 26 is deteriorated due to a temperature change. The adhesive strength of the tape 26 is weakened, which makes it difficult to prevent the electric wire 3 from moving and to fix the twist of the stranded wire portion 3b. The adhesive force of the adhesive tape 26 weakens,
If the electric wire 3 moves or the stranded wire portion 3b is untwisted, a state where the guide wire portions 3a overlap each other occurs as shown in FIG. In such a state, the voltage waveform guided to the guide wire portion 3a is disturbed, and the accuracy of position detection of a moving object such as a train obtained from the voltage waveform is reduced.

Further, when a bending load is applied in the longitudinal direction of the conventional cross guide wire 25, the wire 3 adhered to the substrate 2 with the adhesive tape 26 is tensioned.
Is less flexible than the one that is not adhered to the substrate 2. Therefore, crossing guide line 2
If the work of winding the wire 5 on a drum or a roll cannot be performed smoothly, or if a bending load is forcibly applied, the electric wire 3 may be disconnected.

Accordingly, an object of the present invention is to provide a cross guidance line which can maintain high position detection accuracy of a moving body such as a train for a long period of time and is excellent in flexibility.

[0009]

SUMMARY OF THE INVENTION The object of the present invention is to provide a board and a guide wire section in which at least one or more wires are laid in a longitudinal direction on the board and two insulated conductors are arranged in parallel. A wire having a stranded wire portion obtained by twisting two insulated conductors and an electric wire alternately formed in the longitudinal direction, and a part or the whole of the stranded wire portion is inserted into a pipe. Solved by In addition, as a crossing guide line, at least one substrate is provided in the longitudinal direction on the substrate.
An electric wire in which two or more insulated conductors are arranged in parallel, and a guide wire portion in which two insulated conductors are arranged in parallel and a stranded wire portion in which the two insulated conductors are twisted are alternately formed in the longitudinal direction; Can be solved by using the stranded wire portion sandwiched between two heat sealing tapes.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a cross guide line according to the present invention;

(Embodiment 1) FIG. 1 to FIG. 3 are views showing one embodiment of a cross guide wire according to the present invention. The cross guide wire 1 is composed of a plate-shaped substrate 2 and two insulated conductors. , A pipe 4, a non-woven fabric 5, and a round bar-shaped tension in which an induction wire portion 3a in which the two insulated conductors are arranged in parallel and a stranded wire portion 3b in which the two insulated conductors are twisted in the longitudinal direction are alternately formed. Member 6
And a sheath 7.

The three electric wires 3 are laid in the longitudinal direction on the substrate 2 so that the guide wire portions 3a formed on the wires 3 do not overlap with the guide wire portions 3a formed on the other wires 3. Are arranged at predetermined intervals in the longitudinal direction of the substrate 2. The stranded wire portion 3b where the guide wire portion 3a is not disposed is inserted into the pipe 4 provided with the slit 4a in the longitudinal direction. In addition, the substrate 2 and the electric wire 3
A nonwoven fabric 5 is wound around the pipe 4, tension members 6 are provided on both sides of the substrate 2 along the longitudinal direction, and the substrate 2 and the tension members 6 are collectively covered with a sheath 7.

The substrate 2 only needs to have both mechanical strength and electrical characteristics as a support for the electric wire 3 and may be made of, for example, glass fiber reinforced resin or carbon fiber reinforced resin. Fiber reinforced resin (FRP),
Examples include polyethylene, polyvinyl chloride, and bakelite. Among them, glass fiber reinforced resin is preferably used because of its excellent elasticity due to temperature change. The width of the substrate 2 is set according to the use of the cross guide line, and is not particularly limited.
m. The thickness of the substrate 2 is not particularly limited, but is, for example, 2 to 3 mm.

As the insulated conductor used for the electric wire 3, a conductor obtained by applying an insulating coating made of polyethylene or the like to a conducting wire made of copper, aluminum or the like is used. The outer diameter of the insulated conductor is not particularly limited, for example,
The outer diameter of the conductive wire is, for example, 0.5 to 0.7 mm.

The length of the guide wire portion 3a of the electric wire 3 in the longitudinal direction is not particularly limited, but is 22.5 to 37.5 cm.
It is said. The interval between the two insulated conductors forming the guide wire portion 3a is set according to the width of the substrate 2 and the like, and is not particularly limited.
It is said. The length of the stranded wire portion 3b in the longitudinal direction is set by the number of the laid wires 3 and the length of the guide wire portion 3a in the longitudinal direction, and is not particularly limited. In the case of the cross guidance line laid, 13
It is 9.5 to 232.5 cm.

The pipe 4 covers part or all of the stranded wire portion 3b of the electric wire 3 for the purpose of preventing the movement of the guide wire portion 3a of the electric wire 3 and fixing the twist of the stranded wire portion 3b. Installed. However, when a part of the stranded wire portion 3b is inserted into the pipe 4, at least a portion before the two insulated conductors of the stranded wire portion 3b branch into the guide wire portion 3a is inserted into the pipe 4, It is necessary to prevent the twist of the twisted wire portion 3b from unraveling.

The pipe 4 has a slit 4 in the longitudinal direction.
The twisted wire portion 3b can be inserted into the pipe 4 by pushing and expanding the slit 4a to elastically deform the pipe 4. The width of the slit 4a is not particularly limited as long as it can insert the stranded wire portion 3b of the electric wire 3 into the pipe 4 when expanded, and is not particularly limited, but is 1 to 2 mm.

The material of the pipe 4 is not particularly limited as long as it can be elastically deformed.
Resin materials such as polyethylene, polyvinyl chloride, and nylon are exemplified, and polyethylene is particularly preferably used. The length of the pipe 4 in the longitudinal direction is set by the length of the stranded wire portion 3b to be inserted and the like, and is not particularly limited, but is, for example, 50 to 70 cm. The inner diameter of the pipe 4 is set according to the number of the inserted electric wires 3 and is not particularly limited. For example, the inner diameter is set to 3 to 5 mm. In order to fix the twist of the wire portion 3b, it is preferable that a gap be prevented from being generated as much as possible between the inner wall of the pipe 4 and the twisted wire portion 3b. Also, the outer diameter of the pipe 4 is not particularly limited, but is, for example, 4.5 to 6.5 mm.
It is said.

The non-woven fabric 5 prevents the substrate 2 from being displaced from the electric wires 3 and prevents heat from being transmitted to the electric wires 3 during sheathing, and has a width of 5 to 7 cm and a thickness of 0.15 to 0.3 mm.
It is a belt-like thing. The material is not particularly limited, and examples thereof include cotton, rayon, acetate, nylon, and polyester. Among them, polyester is preferably used.

The tension member 6 includes the cross guide line 1
It is a tensile member having a tensile strength. As the tension member 6, for example, a round bar-shaped member such as a steel stranded wire, a single rope, or FRP is used, and a steel stranded wire is particularly preferably used. The outer diameter is not particularly limited.
8 to 9 mm.

The sheath 7 integrates the substrate 2 and the tension member 6 and protects the substrate 2 and the electric wires 3 at the same time. The material of the sheath 7 is usually
Any material may be used as long as it is used for coating electric wires and cables, and examples thereof include resin materials such as polyethylene and polyvinyl chloride. Among them, polyethylene is preferably used.

Next, a method of manufacturing the cross guide wire according to the first embodiment will be described. FIG. 4 is a schematic configuration diagram illustrating an example of a manufacturing apparatus for the cross guide wire 1. In the figure, reference numeral 8 denotes an electric wire delivery roll, reference numeral 9 denotes a substrate delivery roll, reference numeral 10 denotes a laying table,
Reference numeral 11 denotes a tape winding machine, reference numeral 12 denotes a take-up machine, and reference numeral 13 denotes a take-up roll.

The 3 delivered from the wire delivery roll 8
The electric wires 3 are laid on the substrate 2 sent from the substrate sending roll 9 on the laying table 10. Next, wiring stand 1
On 0, the stranded wire portion 3b of the electric wire 3 is inserted into the pipe 4. Next, the nonwoven fabric 5 is wound on the substrate 2, the electric wires 3 and the pipes 4 by using a tape winding machine 11. The substrate on which the electric wire 3 is laid and the nonwoven fabric 5 is wound in this way is taken up by the take-up machine 12 and taken up by the take-up roll 1.
It is wound on 3. Further, in another step, the substrate wound up by the take-up roll 13 is collectively covered with the sheath 7 together with the tension member 6 by an extruder or the like. In this way, a cross guide line 1 as shown in FIG. 1 is obtained.

In such a cross guide wire 1, since the stranded wire portion 3 b of the electric wire 3 is inserted into the pipe 4, compared with the adhesive tape 26 used for the conventional cross guide wire 25, Movement of the guide wire 3a of the electric wire 3 and the twisted wire 3
The untwisting of b can be prevented for a long time. Therefore, even when used for a long time, the voltage waveform induced in the induction wire portion 3a does not disturb. The electric wire 3 is connected to the substrate 2
Therefore, even if a bending load is applied in the longitudinal direction of the cross guide wire 1, the tension applied to the electric wire 3 is smaller than that of the conventional cross guide wire 17, and the flexibility is good.

(Embodiment 2) FIGS. 5 to 7 are views showing an embodiment of a cross guide line according to the present invention, and the same parts as those in Embodiment 1 are denoted by the same reference numerals. This cross guide line 20
Is an electric wire 3 in which a plate-like substrate 2, an induction wire portion 3a in which two insulated conductors are arranged in parallel, and a stranded wire portion 3b in which the two insulated conductors are twisted in a longitudinal direction are alternately formed. , A heat-sealing tape 21, a nonwoven fabric 5, a round bar-shaped tension member 6, and a sheath 7.

The three electric wires 3 are laid in the longitudinal direction on the substrate 2, and the guide wire portions 3 a formed on the wires 3 do not overlap with the guide wire portions 3 a formed on the other wires 3. Are arranged at predetermined intervals in the longitudinal direction of the substrate 2. The stranded wire portion 3b of the electric wire 3 is sandwiched between two heat fusion tapes 21 extending in the longitudinal direction, and the two heat fusion tapes 21 are fused to each other. Also,
A nonwoven fabric 5 is wound on the substrate 2, the electric wires 3, and the heat-sealing tape 21. On both sides of the substrate 2, tension members 6 are provided along the longitudinal direction. It is collectively covered with a sheath 7.

The heat sealing tape 21 is for preventing the guide wire portion 3a of the electric wire 3 from moving and for preventing the twist of the stranded wire portion 3b from being untwisted. The above heat sealing tape 2
Although the width of 1 is not particularly limited, for example, 25 to 35
mm. The thickness of the heat sealing tape 21 is as follows.
For example, it is set to 0.2 to 0.3 mm.

The material of the heat-sealing tape 21 may be any material that can be fused to each other by heating. For example, a resin material such as polyethylene may be used, and polyethylene is particularly preferably used. The heat sealing tape 21
Are set according to the material used, and are not particularly limited. For example, in the case of polyethylene, the temperature is set to 140 to 150 ° C.

Next, a method for manufacturing the cross guide wire according to the second embodiment will be described. FIG. 8 is a schematic configuration diagram illustrating an example of a manufacturing apparatus for the cross guide wire 20. In the figure, reference numeral 8 denotes an electric wire feed roll, reference numeral 9 denotes a substrate feed roll, reference numeral 22 denotes a tape feed roll, reference numeral 23 denotes a heating roll, Reference numeral 10 denotes a laying table, reference numeral 11 denotes a tape winding machine, reference numeral 12 denotes a take-up machine,
Reference numeral 13 denotes a winding roll.

First, the two heat-sealing tapes 21 fed from the tape feed roll 22 sandwich the stranded wire portions 3b of the three wires 3 sent from the wire feed roll 8 from above and below, and heat 150 by roll 23
Heated from above and below at ℃ and fused together. Next, the electric wire 3 sandwiched between the heat-sealing tapes 21 is laid on the board 2 sent out from the board sending roll 9 on the laying table 10. Next, the nonwoven fabric 5 is wound on the substrate 2, the electric wires 3 and the heat-sealing tape 21 by using a tape winding machine 11. Thus, the substrate on which the electric wire 3 is laid and the nonwoven fabric 5 is wound is taken up by the take-up machine 12 and taken up by the take-up roll 13. Further, in another step, the substrate wound up by the winding roll 13 is collectively covered with the sheath 7 together with the tension member 6 using an extruder or the like. In this way, a cross guide line 20 as shown in FIG. 8 is obtained.

In such a cross guide wire 20, since the stranded wire portion 3 b of the electric wire 3 is sandwiched by the heat sealing tape 21, compared with the adhesive tape 26 used for the conventional cross guide wire 25. , The movement of the electric wire 3 and the untwisting of the stranded wire portion 3b can be prevented for a long time. Therefore, even when used for a long time, the voltage waveform induced in the induction wire portion 3a does not disturb. Further, since the electric wire 3 is not fixed to the substrate 2, even if a bending is applied in the longitudinal direction of the cross induction wire 20, the tension applied to the electric wire 3 does not reach the conventional cross induction wire 2.
It is smaller than 5 and has good flexibility. Furthermore, since the attachment of the heat sealing tape 21 can be automatically performed,
Compared with the conventional cross guide wire 25, the labor of cutting the tape, confirming the sticking position, attaching the tape, and the like can be omitted, the number of personnel required for manufacturing can be reduced, and the manufacturing cost can be reduced.

[0032]

As described above, in the cross induction wire according to the present invention, since the voltage waveform induced in the induction wire portion is not disturbed even when used for a long period of time, the movement of a train or the like is not affected. High body position detection accuracy can be maintained over a long period of time. Further, since the cross guide wire of the present invention has good flexibility in the longitudinal direction, the operation of winding the cross guide wire around a drum or a roll can be performed smoothly, and the electric wire does not break.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a cross guide line of the present invention.

FIG. 2 is a schematic diagram showing an example of a wiring state of an electric wire used for a cross guide wire of the present invention.

FIG. 3 is a schematic cross-sectional view showing an example of a wiring state of an electric wire used for the cross guide wire of the present invention.

FIG. 4 is a schematic configuration diagram illustrating an example of an apparatus for manufacturing a cross guide line according to the present invention.

FIG. 5 is a perspective view showing an example of a cross guide line of the present invention.

FIG. 6 is a schematic diagram illustrating an example of a wiring state of an electric wire used for the cross guidance wire of the present invention.

FIG. 7 is a schematic cross-sectional view showing an example of a wiring state of an electric wire used for the cross guide wire of the present invention.

FIG. 8 is a schematic configuration diagram illustrating an example of an apparatus for manufacturing a cross guidance wire according to the present invention.

FIG. 9 is a top view showing an example of a conventional cross guidance line.

FIG. 10 is a diagram showing a positional relationship between an electric wire used for a cross induction wire and a waveform of a voltage generated by induction on the electric wire.

FIG. 11 is a diagram showing a positional relationship between an electric wire used for a cross induction wire and a waveform of a voltage generated by induction on the electric wire.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Cross guide wire, 2 ... Board, 3 ... Electric wire, 3a ... Guide wire part, 3b ... Twist wire part, 4 ... Pipe, 20 ... Cross guide wire, 21 ・ ・ ・ Heat fusing tape

Claims (2)

[Claims] 1. A board, at least one or more laid in the longitudinal direction on the board, an induction wire portion in which two insulated conductors are arranged in parallel, and a stranded wire portion in which the two insulated conductors are twisted. And an electric wire alternately formed in the longitudinal direction, wherein a part or the whole of the stranded portion is inserted into a pipe. 2. A substrate, an induction wire portion laid at least one or more in the longitudinal direction on the substrate, and an insulated wire portion in which two insulated conductors are arranged in parallel, and a stranded wire portion in which the two insulated conductors are twisted. And an electric wire alternately formed in the longitudinal direction, wherein the stranded portion is sandwiched between two heat-sealing tapes extending in the longitudinal direction.