JP4261599B2 - Power line protection tube that also supports communication lines - Google Patents

Description

  The present invention relates to a power line protection tube that adheres to a power line installed between utility poles and also serves as a support for a communication line that also supports the communication line for protection.

  Conventionally, for example, there is a case where a power line and a communication line are laid in parallel between power poles. In this case, the power line and the communication line are separately laid. In particular, in order to prevent the communication line from sagging due to its own weight, a wire is stretched between the power poles below the power line, and the wire is supported by being suspended via a hanger hook or a lashing wire.

In this way, the power line and the communication line are installed separately, and in the communication line, the wires are stretched between the power poles and supported by using many hanger hooks and lashing wires. The work required a lot of labor and time, the workability was extremely poor, and the use of a large amount of materials combined with the problem of high construction costs.
Therefore, the present invention has been made to solve the above-mentioned problems, and it is possible to construct a communication line on a power line constructed between utility poles, thereby facilitating and speeding up the construction work and reducing the construction cost. An object of the present invention is to provide a power line protection tube that also supports a communication line.

  In order to achieve such an object, the power line protective tube also serving as a support for the communication line according to the present invention has both ends open and the lower end portion is divided so as to be expandable along the longitudinal direction. Protruding pieces extending downward are provided, and a plurality of mounting holes through which the coupling buttons are inserted are formed in both protruding pieces to form a tubular body, which can be attached with the power line and the communication line positioned vertically. A pair of support protrusions having a size and extending upward in the longitudinal direction so as to face both protruding pieces on both divided edges, are integrally extended in the longitudinal direction, and both the inner peripheral surface of the tubular body and each support protrusion Supporting each communication line between.

  Therefore, both the projecting pieces are expanded and attached to the power line laid between the power poles, then the communication line is introduced, the coupling button is inserted into the mounting hole of both projecting pieces, and the projecting pieces are joined to each other to connect the pipe. Support communication lines in the body. In this case, both the power line and the communication line are protected by the tube.

As described above, the power line protective tube that also supports the communication line according to the present invention can be installed by introducing and supporting the communication line in the tube attached to the power line. This simplifies the process and speeds up work. In particular, when a communication line is added, it can be done simply by inserting it through the tube, so that the installation work can be easily performed. In addition, it is possible to reduce the construction cost because the construction period can be shortened with little use of many materials. In addition, since a sufficient electrically insulating creepage distance is provided on the peripheral surface of the pipe, it is possible to sufficiently withstand a high voltage and it is safe. Moreover, since a tubular body is used, a plurality of communication lines can be inserted and installed.
Furthermore, by providing support protrusions at the divided edges in the tube to provide an electrically insulated creepage distance and to support the lower end of the communication line, the inner diameter of the tube can be reduced and resistance due to wind pressure can be reduced. It is possible to reduce the power line and the communication line, and the support line can stably support the communication line.

  Embodiments of a power line protection tube (hereinafter simply referred to as a power line protection tube) that also serves as a support for communication lines according to the present invention will be described below with reference to the drawings. 1 is a perspective view of a power line protection tube, and FIG. 2 is a cross-sectional view taken along line XX of FIG. In the figure, 1 is a tubular body formed by extrusion molding of a soft polyethylene resin, and has a required length (usually 2 m). The tube body 1 is open at both ends, and has an ankle-shaped projection 2 on the outer periphery of one end in the longitudinal direction of the main body pipe portion 1a, and a joint pipe portion 1b that is slightly larger than the main body pipe portion 1a is connected to the other end side. Yes. The joint pipe portion 1b is provided with a large-diameter pipe portion 3 into which the neck-like projection 2 is fitted. The lower end of the tubular body 1 is divided so as to be expandable by providing a cut along the longitudinal direction thereof, and opposed to each other in order to introduce and adhere a power line D and a communication line T, which will be described later, to the divided end edges 4, 4. Protruding pieces 5 and 5 which are located and extend downward are provided. In the joint pipe portion 1b, the interval between the protruding pieces 5b, 5b is set to a dimension that allows the two protruding pieces 5 to intervene. The projecting pieces 5 and 5 are provided with a plurality of mounting holes 7 through which a coupling button 6 described later is inserted along the longitudinal direction at regular intervals. As shown in FIG. 4, the tubular body 1 is formed in a substantially egg-shaped cross-section with a size that allows the power line D and the communication line T to be attached vertically.

  The coupling button 6 is used for coupling the projecting pieces 5 and 5 so that they do not unnecessarily expand. The coupling button 6 has substantially the same diameter as the mounting holes 7 and substantially the same thickness of the two projecting pieces 5 and 5. A disc-shaped head portion 9 having a diameter larger than that of the mounting hole 7 is provided at one end of the shaft portion 8 having a length corresponding to the length of the shaft portion, and a neck shape having a slightly larger diameter than that of the mounting hole 7 is provided at the other end of the shaft portion 8. Is formed integrally with a synthetic resin.

The power line protection tube P according to the present invention has the above-described configuration, opens the protruding pieces 5 and 5 to expand the divided end edges 4 and 4, and the power line laid between the power poles (not shown) in the gap. D is introduced and deposited, and then the communication line T is introduced from the gap. Then, the projecting pieces 5 and 5 are closed, and the engaging portions 10 of the coupling button 6 are pushed into the mounting holes 7 and 7 so as to be inserted, and the two projecting pieces 5 and 5 are coupled. As a result, the power line D and the communication line T are attached as shown in FIG. 3, and the communication line T is closely attached to the lower surface of the connecting pieces 5 and 5 as shown in FIG. It is received on the division | segmentation edge 4 and 4, and it supports safely, without protruding from the pipe body 1. FIG.
Then, the power line protection tube P is attached in order, the tube end of one tube body 1 is inserted into the other joint tube portion 1b, and the neck-shaped projection 2 is fitted to the large diameter tube portion 3 so that a plurality of power line protection tubes are provided. By connecting P, the installation work can be performed over a desired length.

  Further, as shown in FIG. 4, the tube 1 has an electrically insulating creepage distance F for safety between a portion f1 where the power line D contacts the inner peripheral surface and an inner peripheral upper end portion f2 of the mounting hole 7. The diameter of the tube body 1 and the length of the projecting pieces 5 and 5 are set so as to be able to withstand the high voltage applied to the power line D.

  As described above, the power line protection pipe P of the present invention is attached to the power line D installed between the utility poles and also supports the communication line T so that the installation work is simplified and the workability can be improved. Moreover, since the projecting pieces 5 and 5 are coupled to the communication line T accommodated in the tubular body 1 by the coupling button 6 inserted through the mounting holes 7 and 7, the divided end edges 4 and 4 are unnecessarily opened. It is supported without any problems.

5 to FIG. 10, between the part f <b> 1 that supports the communication line T on the inner peripheral surface of the tubular body 1 and the power line D contacts, and the inner peripheral upper end part f <b> 2 of each mounting hole 7, 7. FIG. 9 shows another embodiment in which a supporting protrusion 11 for securing an electrically insulating creepage distance F is integrally projected. That is, in the structure shown in FIG. 5, a support protrusion 11 a that is curved in a cross-sectional arc shape along the inner peripheral surface of the tube body 1 is integrally extended in the longitudinal direction at one divided end edge 4. And the communication line T is supported by this upper surface. In the structure shown in FIG. 6, a support protrusion 11b curved in a circular arc shape along the inner peripheral surface of the tubular body 1 is integrally extended in the longitudinal direction at the tip of one split end edge, and the support protrusion 11b A bulging portion 12 protruding downward is provided at the tip. On the other hand, an engagement groove 13 into which the bulging portion 12 is fitted is provided on the inner wall surface of the tube body 1. Also in this case, the communication line T is supported on the upper surface. In the structure shown in FIG. 7, a support projection 11 c that is curved in a downward cross-sectional arc shape is integrally provided on one divided end edge 4. On the other hand, a concave recess 15 is provided on the inner peripheral surface of the tube body 1 to be fitted so that the support protrusion 11c overlaps. Also in this case, the communication line T is supported on the upper surface.
In FIG. 8, the positions of the projecting pieces 5, 5 are shifted from the center line of the tube body 1 together with the divided end edges 4, 4, and a support protrusion 11 d protruding upward is provided on one divided end edge 4. In this case, it is supported by one side of the support protrusion 11d and the bottom of the inner peripheral surface of the tube body 1. FIG. 9 shows a modification of that shown in FIG. 8, in which one split end edge 4 is provided with a support protrusion 11 e provided with a folding line 16 that bends to the back side at the tip. A V-groove 17 is provided to be fitted so that the folded strip 16 overlaps the peripheral surface. However, in this case, the communication line T is supported at the bottom of the inner peripheral surface of the tube body 1. In the structure shown in FIG. 10, a pair of supporting protrusions 11f projecting upward in opposition to the projecting pieces 5 and 5 are integrally extended in the longitudinal direction at both divided edges 4 and 4. In this case, it is convenient to support the two communication lines T and T, and the communication lines T and T are supported between the inner peripheral surface of the tubular body 1 on both sides and the support protrusions 11f, respectively. Yes. As a result, the communication line T is stable and the tube 1 itself is stable. 5 to 10, it is difficult for the divided edges 4 and 4 to open, so that the communication line T is prevented from falling off.

  Thus, by extending the supporting ridges 11a to 11f on the divided end edge 4, the electrically insulating creepage distance F of the inner peripheral surface of the pipe body 1 is extended, and thus the supporting ridge as shown in FIG. Compared to the tube body 1 without 11a to 11f, the tube diameter can be reduced, and the length of the protruding pieces 5 and 5 can be shortened. It is possible to reduce the power line D, and it is possible to avoid an accident that the power line D is disconnected due to a load or the utility pole collapses.

The perspective view of the power line protection tube which served as support of the communication line which concerns on this invention. XX sectional drawing of FIG. The perspective view of a use condition. FIG. 4 is a cross-sectional view taken along line YY in FIG. 3. Sectional drawing of the power line protective tube which concerns on other embodiment. Sectional drawing of the power line protective tube which concerns on other embodiment. Sectional drawing of the power line protective tube which concerns on other embodiment. Sectional drawing of the power line protective tube which concerns on other embodiment. Sectional drawing of the power line protective tube which concerns on other embodiment. Sectional drawing of the power line protective tube which concerns on other embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tube 4, 4 Dividing edge 5, 5 Protruding piece 6 Coupling button 7, 7 Mounting hole 11a-11f Supporting protrusion D Power line F Electrical insulation creepage distance f1 The part where a power line contacts f2 The inner peripheral upper end part of a mounting hole P Power line protection tube

Claims (1)

Both ends are open and the lower end portion is divided so as to be expandable along the longitudinal direction. Protruding pieces extending downward are provided on both divided edges, and a plurality of mounting holes through which the coupling buttons are inserted are provided in both protruding pieces. By forming a tube body,
The tubular body has a size that allows the power line and the communication line to be positioned vertically and can be attached, and a pair of supporting protrusions projecting upward facing the projecting pieces on the both split end edges in the longitudinal direction. A power line protective tube that also serves as a support for a communication line, which is integrally extended and supports the communication line between a circumferential surface on both sides of the tubular body and each of the support protrusions.

Images