JP4248677B2 - Liner - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a wire feeder for inserting various cables such as a communication cable and a power transmission cable into a cable hanging device such as a chain coil, and more particularly, to perform a wire work easily and quickly. It is related to the communication device that has been made possible.
[0002]
[Prior art]
As a means for easily laying a communication cable, a power transmission cable, and the like, it has been proposed to use a stretchable chain coil formed from a synthetic resin in a continuous spiral shape.
[0003]
FIG. 5 shows the installed state of the chain coil. As shown in FIG. 5, the chain coil C is attached so as to wind the cable L together with the messenger wire W stretched between the utility poles, and the cable L is suspended from the messenger wire W at a constant interval. It is like that.
[0004]
In addition, when a cable to be installed is added, a new cable may be inserted inside the spiral of the chain coil and extended along the messenger wire W. In this case, the wiring work is performed by pushing the tip of the cable from the one power pole side toward the other power pole side into the chain coil and gradually moving along the messenger wire W.
[0005]
However, since the cable is flexible and has a bend based on being wound on the reel for a long time, it is extremely difficult to advance the cable tip while passing through the inside of the chain coil. In some cases, it is necessary to move the tip part out of the chain coil, pull it back and move it forward again into the chain coil. Therefore, a great deal of time and labor are required for the cable wiring work.
[0006]
[Problems to be solved by the invention]
An object of the present invention is to provide a wire-passage device capable of easily and quickly performing a wire-working operation of various cables.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the wire-liner of the present invention is provided with a plurality of elastically deformable bows around the core material, and both ends of the bow member in the longitudinal direction of the core material, respectively. Attach, a connecting device having a hollow structure attached to the rear end portion of the core member , and a cable configured to fix a cable in a hollow tube of the connecting member, in the length direction of the plurality of bows A fastener for converging at least one location is provided on the core material, and the bow body is configured to be slidable with respect to the fastener while the fastener is fixed to the core material. It is what.
Further, another wire-passage device of the present invention for achieving the above object has a plurality of elastically deformable bows arranged around the core material, and both ends thereof in the length direction of the core material. Each of the arches is attached to the rear end of the core member, a coupler having a hollow structure is attached to the rear end of the core member, and a cable is fixed in the hollow tube of the coupler. A fastener for converging at least one point in the length direction is provided on the core material, and the bow body is fixed to the fastener while the fastener is slidable with respect to the core material. It is characterized by that.
[0008]
According to the wire feeder of the present invention, when various cables are additionally inserted into a cable erection hanger such as a chain coil formed in a continuous spiral shape, the cable is connected to the rear end of the core member, and the core By pushing the tip of the cable inside the cable erection hanger with the material at the head, the multiple bows that can be elastically deformed are always in contact with the cable erection hanger, so the core material is a messenger. It is possible to advance the central portion of the cable erection hanger while avoiding wires and existing cables. Therefore, it is possible to easily and quickly carry out various cable passing operations.
[0009]
In the present invention, a fastener for converging at least one point in the length direction of the plurality of bows is provided on the core member, and the fastener is fixed to the core member. The fastener is configured to be slidable with respect to the fastener, or the bow is fixed to the fastener, while the fastener is configured to be slidable with respect to the core material . When a fastener for converging a plurality of arches in at least one place is provided, each arch forms a plurality of arcuate bulges in the length direction of the core member.
[0010]
For this reason, when the path of the wire-liner is narrowed locally, the bulge on the front side is reduced while the bulge on the rear side is enlarged. Thus, the tip end side of the bow can be smoothly advanced while accurately maintaining the position of the core material. In addition, when the rear part of the arch passes through a narrow path, the bulge on the rear side is reduced while the bulge on the front side is enlarged. The rear side of the bow can be smoothly advanced while accurately maintaining the position of the material.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the configuration of the present invention will be described in detail with reference to the accompanying drawings.
[0012]
FIG.1 and FIG.2 shows the wire feeder (reference example) for demonstrating this invention. In the figure, W is a messenger wire stretched between power poles, C is a continuous spiral chain coil laid along the messenger wire W, and L is a cable suspended by the chain coil C at a constant interval. It is.
[0013]
This wire- liner is a connection for connecting a rod-shaped or tubular core material 1, a plurality of bow bodies 2 extending around the core material 1 along the length direction, and a newly installed cable L '. 3 is provided. The core material 1 is made of metal or synthetic resin. Although the dimension of this core material 1 is not specifically limited, It is required that it is longer than at least the helical pitch when the chain coil C is installed. Sockets 1a and 1b for fixing the front and rear end portions of the plurality of bow bodies 2 are attached to the front end portion and the rear end portion of the core material 1, respectively. The socket 1a on the distal end side is formed in a conical shape so as to facilitate the advancement of the wire passing device.
[0014]
On the other hand, a coupler 3 is attached in the vicinity of the socket 1b on the rear end side. The connector 3 has a hollow structure, and a tip portion of a cable L ′ inserted into the hollow tube is fastened and fixed with a screw 3a. However, the configuration of the coupler 3 is not particularly limited, and for example, a structure in which the tip portion of the cable L ′ is simply locked by a frictional force may be used.
[0015]
The plurality of bow bodies 2 are made of a linear elastic wire material such as a synthetic resin monofilament or a piano wire, and have reversible flexibility that deforms like a bow when a force is applied from opposite ends in the opposite direction. These bows 2 are attached between the sockets 1a and 1b of the core material 1 in an elastically curved state, and project radially from the outer periphery of the core material 1. The number of bows 2 is preferably 3-6. If the number of the bow bodies 2 is less than 3, it becomes difficult to position the core material 1 at the substantially central portion of the chain coil C, so that the straightness of the wire passing device is lowered. Since the body 2 becomes overcrowded, the resistance at the time of wiring increases, and the wiring work becomes difficult.
[0016]
Next, a method for using the above-described wire-liner will be described. As shown in FIGS. 1 and 2, when a new cable L ′ is added to the messenger wire W stretched between the utility poles from the state where the cable L is already installed via the chain coil C, first, the connection of the wiring device is performed. Attach the tip of the cable L ′ to the vessel 3. Next, with the core material 1 at the head, the tip end portion of the cable L ′ is pushed along the messenger wire W from one electric pole side to the other electric pole side so as to pass through the inside of the chain coil C.
[0017]
At this time, the plurality of elastic bows 2 are always in contact with the chain coil C while being deformed flexibly, so that the core material 1 is moved forward in the approximate center of the chain coil C while being supported by the plurality of bows 2. To do. Further, although the messenger wire W and the existing cable L exist inside the chain coil C, the plurality of bow bodies 2 are arranged in the circumferential direction so as to avoid the messenger wire W and the existing cable L as shown in FIG. Therefore, these members do not hinder the advancement of the core material 1. Therefore, in the cable erection structure using the chain coil C, a new cable passing operation can be performed easily and quickly.
[0018]
3 and 4 shows the wire-passing device according to an embodiment of the present invention. 3 and 4, the same components as those in FIGS. 1 and 2 are denoted by the same reference numerals, and detailed description thereof is omitted.
[0019]
In the wireliner of this embodiment, a fastener 1c for converging each bow 2 is provided at a substantially central portion of the core material 1 in the length direction. The fastener 1c is fixed to the core material 1, but each bow 2 is slidable with respect to the fastener 1c. Thereby, each bow 2 forms two arcuate bulges 2 a and 2 b in the length direction of the core 1.
[0020]
Even when a new cable L ′ is installed along the existing cable L using the above-described wire feeder, as in the above-described embodiment, the leading end of the cable L ′ is a messenger wire with the core material 1 at the top. By pushing along the inner side of the chain coil C along W, the cable passing operation can be performed easily and quickly.
[0021]
In particular, in the present embodiment, a plurality of bow bodies 2 are slidably restrained with respect to the fastener 1 c at a substantially central portion in the length direction of the core material 1, and each bow body 2 is in the length direction of the core material 1. Since the two arc-shaped bulges 2a and 2b are formed in, for example, the diameter when the chain coil C is erected is locally narrowed, or the path of the connecting device is localized due to the suspended state of the existing cable L Even when it is narrow, the wire passer can be smoothly advanced.
[0022]
That is, when the path of the wire passing device is locally narrowed, the bulge 2a on the front side is reduced while the bulge 2b on the rear side is enlarged. While accurately maintaining the position of the core material 1 at the center of the chain coil C, the distal end side of the bow 2 can be smoothly advanced. Subsequently, when the rear side portion of the arch 2 passes through a narrow path, the bulge 2b on the rear side is reduced while the bulge 2a on the front side is enlarged. The rear side of the bow 2 can be smoothly advanced while accurately holding the position of the core 1 with the pressing force of.
Therefore, according to the present embodiment, it is possible to avoid the wireliner protruding from the chain coil C even when the route of the wireliner is bent.
[0023]
In the above embodiment, the fastener is fixed to the core while the bow is slidable with respect to the fastener. In the present invention, the bow is fixed to the fastener. The fastener may be configured to be slidable along the length direction of the core member. In this case, the arch may be integral with the fastener or may be divided on both sides of the fastener.
[0024]
Moreover, although the said embodiment demonstrated the case where several arches were converged in one place of the length direction, in this invention, you may converge these arches in several places of a length direction.
[0025]
【The invention's effect】
As described above, according to the wire feeder of the present invention, a plurality of elastically deformable bows can be attached around the core material along the length direction, and a cable can be connected to the rear end portion of the core material With this configuration, when various cables are additionally inserted into a cable laying suspension such as a chain coil formed in a continuous spiral shape, the wiring operation can be performed easily and quickly. In addition, a fastener that converges at least one point in the length direction of multiple bows is provided on the core, and the bow can be slid relative to the fastener while the fastener is fixed to the core. Or when the path of the wire-liner is locally narrowed by fixing the bow body to the fastener while making the fastener slidable with respect to the core material, etc. In addition, the bow can be smoothly advanced while accurately maintaining the position of the core material.
[Brief description of the drawings]
FIG. 1 is a side view showing a case where a cable is installed using a wireliner according to a reference example of the present invention.
2 is a cross-sectional view taken along the line XX in FIG.
FIG. 3 is a side view showing a case where a cable is installed using the wire-liner according to the embodiment of the present invention.
4 is a YY sectional view of FIG. 3;
FIG. 5 is a side view showing a mounted state of the chain coil.
[Explanation of symbols]
1 Core 1a, 1b Socket 1c Fastener 2 Bow 3 Connector C Chain coil L, L 'Cable W Messenger wire

Claims (2)

A plurality of elastically deformable bows are arranged around the core material, and both ends thereof are respectively attached to the front and rear in the length direction of the core material, and a connection having a hollow structure at the rear end portion of the core material A wire passing device configured to fix a cable in a hollow tube of the coupler, and a fastener for converging at least one point in the length direction of the plurality of bows is provided on the core member. The wire passing device is configured such that the bow is slidable with respect to the fastener while the fastener is fixed to the core member. A plurality of elastically deformable bows are arranged around the core material, and both ends thereof are respectively attached to the front and rear in the length direction of the core material, and a connection having a hollow structure at the rear end portion of the core material A wire passing device configured to fix a cable in a hollow tube of the coupler, and a fastener for converging at least one point in the length direction of the plurality of bows is provided on the core member. A wire passing device configured to fix the bow to the fastener while allowing the fastener to slide relative to the core member.

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