JPS6150541B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a guided wireless transmission line used for position detection of a moving object, data transmission, etc.

In order to detect the position of mobile objects such as cranes and vehicles, and to transmit data between the mobile object and the ground, a guided wireless transmission line is installed along the path of the mobile object, and is connected to the antenna installed on the mobile object. Information and data are transmitted.

Due to its operating principle, this transmission line requires a plurality of electric wires to be laid at various pitches.

Conventionally, this transmission line was installed on-site by installing pins at regular intervals along the local installation route and hooking insulated wires onto these pins to form conductor pairs, but this method was difficult to work with. Unfortunately, it requires a lot of labor, requires many days of on-site work, and has disadvantages such as the installation of a protective cover, which is uneconomical.

In order to solve this drawback, we have proposed a cable system in which the necessary cross-guide pairs are constructed on a suitable substrate, a protective coating is applied, and a messenger wire is integrated in parallel as a tension member during installation. has been done.

However, in this case as well, cutouts for hooking at a certain pitch are machined on the long FRP board, etc.
It has a method of hooking insulated wires on it, has wire storage grooves in the length direction and the direction perpendicular to this, and connects many unit plates such as plastic.
These methods involve wiring electric wires in these grooves, but all of them have drawbacks such as high material costs for the substrate and high molding costs.

In view of the above points, the present invention has been made for the purpose of providing a method for manufacturing an inductive wireless transmission line that is easy to manufacture and inexpensive. A spacer with a protrusion for hooking on the surface,
They are positioned and arranged sequentially at intervals of intersecting unit length, and two messenger wires are extended so as to pass between each of these spacers, and each wire is attached to the wire attachment part of the spacer. A ladder-like wiring unit is formed by the messenger wire and each spacer, and the wires are laid in a zigzag pattern along the wiring unit while hooking the pair of electric wires to the hooking protrusions of the spacer. A method of manufacturing an inductive wireless transmission line, characterized in that the inductive wireless transmission line is formed into a cross-inductive pair.

That is, the present invention facilitates the installation work by:
It is a cable type, and in order to properly lay the cable along the installation route, it is necessary to incorporate messenger wires on both sides of the cable.Moreover, the messenger wires have slight expansion and contraction, making it difficult for practical positioning. Focusing on a point that could be used as a base, first, spacers with wire attachment parts on both sides and hooking protrusions on the surface were sequentially positioned and arranged at intervals of intersection unit length,
Extend the two messenger wires as described above to pass between each of these spacers, and attach each wire to the wire attachment part of the spacer, thus connecting the two messenger wires to each spacer. constitute a ladder-like wiring unit.

Then, along the wiring unit, the paired electric wires are laid in a zigzag pattern while being hooked to the hooking protrusion of the spacer to form a cross-induction pair, thereby forming an inductive wireless transmission line. It is something that forms.

An embodiment of the present invention will be further described below with reference to the accompanying drawings.

Figure 1 shows an example of a spacer installed between two messenger wires, and the spacer is made of polyethylene, vinyl chloride,
Polycarbonate, ABS resin, polyester,
It is integrally molded from a dielectric material such as FRP or EPR rubber. 1 is the attachment part to the messenger wire, 2 is the spacer part that maintains the distance, and 3 is the hanging wire that pulls the electric wire at right angles. The protrusions 4 are working positioning holes for attaching to the messenger wire at a constant pitch.

Figure 2 shows a section of a cross-induction transmission line in which these spacers are attached to messenger wires at predetermined intervals, insulated wires are laid in the required wiring pattern, and a protective coating is applied. In its plan view, b is a cross-sectional view, 5 is a messenger wire, 6 and 7 are insulated wires for cross-guidance, and 8 is a protective coating made of vinyl, polyethylene, or the like.

Next, to explain the manufacturing method in order, in Fig. 3, first, on the workbench of a certain wiring work unit length,
Positioning pins 9 that maintain a space of width s are erected at intervals of intersection unit length l, and the spacer is placed through the hole 4 of the spacer.

Next, messenger wires 5 are extended on both sides of the spacer group and pushed into the messenger wire attachment portions 1 of the spacers to form a ladder-like unit.

Next, as shown in FIG. 4, the insulated wire 6 is wound around the bobbin 10 according to the required wiring pattern.
The wires are laid in a zigzag pattern while being hooked on the hooking protrusion 3 of the spacer, and then the insulated wires 7 are laid in a zigzag pattern in the opposite direction to the wires 6 to form a pair of cross-guided wires. do.

Furthermore, as shown in Fig. 5, the intersection pitch is l,
2l, 3l, etc., and repeat this process to wire the required number of cross-guide pairs.

In order to fix the positions of the laid electric wires 6, 7, etc., they may be fixed to the messenger wire with adhesive tape 11 etc. if necessary, and the wiring of the working unit length is completed.

This section is then extracted from the positioning pin 9 on the workbench, wound onto a drum, and the next working unit length is wired in the same manner.

An extruder is used to extrude the protective coating 8 of polyethylene, vinyl, etc. onto the ladder-like cross-guiding unit, which has completed the full-length wiring in this manner.

According to the present invention as described above, the minimum necessary material is required, the size of the spacer is small, so the molding cost and molding work cost are low, and the installation interval can be freely selected, so that all patterns can be used. The wiring work for cross-guide pairs has many advantages, such as the fact that there is no error in spacing due to the use of fixed pins, and the work is efficient because the wiring work only needs to be done from one side of the cable.

In addition, at the installation site, it is only necessary to extend the cable to a predetermined position and fix it with messenger wire, which has significant effects such as labor saving on site work and improved reliability, and its industrial value. There is something very big about it.

[Brief explanation of the drawing]

FIG. 1 is a perspective explanatory view showing one embodiment of the spacer used in the present invention, FIG. 2 is a perspective view showing an example of the guided wireless transmission line manufactured by the method of the present invention, and a is a plan view. Figures 3 and 5 are cross-sectional explanatory views, Figures 3 to 5 show the method of the present invention in the order of manufacturing, Figures 3a, 4, and 5 are front views, and Figure 3b is a side view. It is an explanatory diagram. 1: Messenger wire attachment part, 2: Spacer part, 3: Electric wire hanging part, 4: Positioning hole for work, 5: Messenger wire, 6, 7:
Insulated wire, 8: Protective coating, 9: Positioning pin,
10: Bobbin wrapped with insulated wire, 11: Tape winding for fixing the wire to the messenger wire.

Claims (1)

[Claims] 1 Spacers with wire attachment parts on both sides and hooking protrusions on the surface are positioned and arranged one after another at intervals of crossing unit length, and two messenger wires are inserted so as to pass between each of these spacers. The wires are stretched and each wire is attached to the wire attachment part of the spacer, and the two messenger wires and each spacer form a ladder-like wiring unit, and along the wiring unit, A method for manufacturing an inductive wireless transmission line, which comprises constructing a cross-inductive pair by wiring a pair of electric wires in a zigzag pattern while hooking them onto a hooking protrusion of the spacer.