JP4849904B2 - How to install a messenger wire - Google Patents

Description

The present invention relates to a messenger wire laying method for laying a messenger wire on a power pole, and more particularly to a messenger wire laying method by a locking means having a band wound around the power pole and a link for locking the messenger wire.

  In order to prevent the utility pole from tilting or to route a lead-in wire branched from the distribution line installed on the utility pole, a messenger wire is installed between the utility poles. The messenger wire is locked to locking means as disclosed in Patent Document 1, for example.

  As shown in FIG. 3, the locking means includes a band 10 that wraps around the utility pole 1, a bobbin-shaped link 20 that locks the messenger wire 2, and the like. The band 10 includes a C-shaped band main body 11 that wraps approximately half a circumference of the utility pole 1, a pair of band pieces 12 and 12 connected to both ends of the band main body 11, and the like.

  Each band piece 12 is formed by integrally forming an arcuate curved portion 12a that is superposed on the utility pole 1 and the band body 11, and a projecting portion 12b that projects in the radial direction of the utility pole 1, and the pair of projecting portions 12b and 12b are , With a certain interval. A large number of countersinks 13 are formed in the band main body 11 and the bent portions 12a, 12a of the pair of band pieces 12, 12 at regular intervals, and each countersink is adjusted to the thickness of the utility pole 1. 13 and 13 communicate. And the connection tool 14 is connected with each countersink 13 and 13 connected at each both ends of the diameter of the utility pole 1, and the band main body 11 and the band pieces 12 and 12 are integrated.

  The connector 14 includes a countersunk bolt 14a having a flat head that fits into the countersunk holes 13 and 13, and a nut 14b that is screwed into the countersunk bolt 14a. The countersunk bolt 14a is inserted into the countersunk holes 13 and 13 from the utility pole 1 side, and the head and the utility pole 1 are joined.

  And the fastening hole 15 is formed in the protrusion part 12b of each band piece 12, The fastener 16 is fixed to this fastening hole 15. FIG. The fastener 16 is, for example, a combination of a bolt 16a and a nut 16b, and the shaft portion of the bolt 16a is bridged between the projecting portions 12b and 12b having a constant interval. . Moreover, the axial part of the volt | bolt 16a penetrates the axial hole of the said link 20, and the link 20 is arrange | positioned between each protrusion part 12b, 12b. On the peripheral surface of the link 20, a concave circumferential groove 22 having a U-shaped cross section is formed so that the messenger wire 2 to be locked is not easily removed.

  Such a locking means is attached to the utility pole 1 as shown in FIG. 4 with the protruding portions 12b of the band pieces 12 facing each other. And each edge part of the messenger wire 2 is latched by each link 20, 20 which opposes, and the messenger wire 2 is constructed between the two utility poles 1,1. A distribution line 3 is installed on the utility pole 1, and a lead-in line 4 branches from the distribution line 3, and the lead-in line 4 is wired along the messenger wire 2. And drawn into shops.

JP-A-10-285769

  In addition to the messenger wire 2 and the distribution line 3, a cable 5 such as a telephone line may be installed on the utility pole 1. Since the cable 5 is installed under the messenger wire 2, when the lead-in wire 4 routed along the messenger wire 2 is directed toward the ground and then drawn into a house or a store, the lead-in wire 4 is connected to the cable. 5 or contact.

  In order to prevent the lead-in wire 4 from coming into contact with or close to the cable 5, the messenger wire 2 can be installed on a brace (not shown). By attaching the brace to the utility pole 1 in the direction perpendicular to the erection direction of the messenger wire 2, the messenger wire 2 erected on the brace can be prevented from being lined up with the cable 5 in the vertical direction.

  However, the brace is not only expensive, but in order to attach the brace to the utility pole 1, it is necessary to fix a locking means such as a band to the utility pole 1 and fix the brace to the locking means. It becomes a troublesome work.

Then, this invention makes it a subject to provide the construction method of the messenger wire which made it easy to construct the messenger wire constructed | assembled by the utility pole in the position eccentric from the axis | shaft of the utility pole.

The messenger wire installation method according to the present invention includes a band that is wound around a power pole and provided with a protrusion that protrudes from the side surface of the power pole, an arm that is fixed to the protrusion so as to protrude from the side surface of the power pole, This is a messenger wire installation method in which a messenger wire is installed between adjacent power poles by a pair of locking means supported at an arbitrary position on the arm and provided with a link for locking the messenger wire. And attaching each locking means to the utility pole so that the arm is in a direction perpendicular to the installation direction of the messenger wire, separating each link from the utility pole so that the locking surface of each link faces the installation direction of the messenger wire , by locking the messenger wire locking surface of each link, connecting the centers of the utility pole to be adjacent Eccentrically outside the side surface of the utility pole from the in-and are characterized by bridging the messenger wire in parallel with the line.
Further, in the messenger wire erection method according to the present invention, the two messenger wires that two links are attached to the adjacent power poles and the two messenger wires that are supported by the arms are locked. Is preferably installed in the opposite direction.

According to this messenger wire erection method , by fixing the band to the utility pole with the arm protruding in the direction perpendicular to the messenger wire erection direction, the link supported by the arm is eccentric from the axis of the utility pole, The locked messenger wire can be removed from the line connecting the two utility poles.

Further, in the messenger wire erection method according to the present invention, two messenger wires that are attached to the adjacent power poles with the two links supported by the arms, and are locked to the links. Is preferably installed in the opposite direction .

In the messenger wire erection method according to the present invention, the arm is formed in a U-shape to bridge between the pair of side portions on the protruding portion side of the band and the tips of the pair of side portions. One of the pair of side portions, and the link is supported on the side portion located on the side of the other locking means, and the messenger wire is locked to each link. A messenger wire may be installed.
According to this messenger wire erection method, the arm is formed in a U-shape, so that it is stronger than an I-shaped arm or the like, and can be made difficult to deform.
In the messenger wire erection method according to the present invention, the arm is formed in a U-shape to bridge between the pair of side portions on the protruding portion side of the band and the tips of the pair of side portions. The two messenger wires may be installed in opposite directions by supporting the links on a pair of side portions and locking the messenger wires to the links.
According to this messenger wire erection method, the two messenger wires can be erected in different directions because the links are supported on the pair of side portions, respectively. Further, the links are supported by the arms formed in a U-shape, so that each link is eccentrically spaced from the utility pole and a plurality of messenger wires can be continuously installed in a straight line.
In the messenger wire erection method according to the present invention, the arm is formed in a U-shape to bridge between the pair of side portions on the protruding portion side of the band and the tips of the pair of side portions. The three messenger wires may be installed in three directions by supporting the links on the pair of side portions and the tip portions and locking the messenger wires to the links.

In the messenger wire installation method according to the present invention, it is preferable that at least one joint surface where the arm and the link are joined is provided with a slip stopper. According to this method of installing the messenger wire, the anti-slip is formed on at least one joint surface where the arm and the link are joined, so that the link can be prevented from being displaced. It can be installed at the position.

In the messenger wire erection method according to the present invention, it is preferable that a flat seat portion sandwiched between a band and a power pole is formed at both ends of the arm. According to this messenger wire erection method , flat seats are formed at both ends of the arm, and this seat is sandwiched between the band and the utility pole, so that the arm can be fixed to the protruding part in a stable posture. it can.

  According to the present invention, the locking means of the messenger wire is provided with a band, an arm and a link. The arm is fixed to the band so as to protrude from the utility pole, and the link is supported by the arm. The messenger wire to be locked can be easily installed at a position eccentric from the utility pole. Therefore, it is necessary to route the lead-in wire branched from the distribution line installed on the utility pole along the messenger wire so that it does not come into contact with or close to the cable such as the telephone line installed on the utility pole even when facing the ground. it can. As a result, since the lead-in wire can be wired without considering the cable, the work time for drawing the lead-in wire into a house or a store can be shortened.

An embodiment of a messenger wire installation method according to the present invention will be described with reference to FIGS. 1 and 2. However, the same parts as in the prior art will be described with the same reference numerals.

Erection method of this messenger wire, as shown in FIG. 1, in addition to the conventional manner of the band 10 and the link 20, to use a locking means includes an arm 30. The band 10 is formed by integrating a C-shaped band main body 11 that wraps approximately half a circumference of the utility pole 1 and a pair of band pieces 12 and 12 fixed to both ends of the band main body 11 by a connector 14. is there. A large number of countersinks 13, 13... Are formed in the band body 11 and the band pieces 12, 12. The countersinks 13, 13 are overlapped according to the thickness of the utility pole 1. The band main body 11 and the pair of band pieces 12 and 12 are integrated with each other by fastening the nut 14 b to the countersunk bolt 14 a of the connector 14 that penetrates the connector 13.

  Each band piece 12 is provided with a projecting portion 12b projecting in the radial direction of the utility pole 1 from an arc-shaped bent portion 12a overlapping the utility pole 1, and a pair of projecting portions 12b, 12b spaced apart from each other. The band 10 is fixed to the utility pole 1 by fixing the fastener 16 to the fastening hole.

  The arm 30 is fixed to the protruding portion 12b by the fastener 16. The arm 30 is formed in a U-shape, and a plurality of types are prepared such that the amount of protrusion from the surface of the utility pole 1 is, for example, about 20 cm to 60 cm.

  In any arm 30, both end portions 31, 31 joined to the protruding portion 12b are formed in a flat plate shape, and an intermediate portion 32 protruding from the protruding portion 12b is formed in an axial shape. And the communicating hole 31a which the volt | bolt 16a of the said fastener 16 penetrates is formed in the both ends 31 and 31 of the arm 30 joined to the protrusion parts 12b and 12b of each band piece 12 and 12. As shown in FIG.

  Further, a seat portion 33 that is bent outward is formed at each end portion 31 of the arm 30 so as to be sandwiched between the bent portion 12 a of the band piece 12 and the utility pole 1. By the seat portion 33, the arm 30 is fixed to the protruding portion 12b in a stable posture.

  The link 20 is supported by the intermediate portion 32 of the arm 30. That is, the shaft 20 is formed in the link 20, and the intermediate portion 32 of the arm 30 passes through the shaft hole 21 of the link 20. In order to prevent the link 20 from moving on the arm 30, the intermediate portion 32 of the arm 30 and / or the joint surface of the shaft hole 21 of the link 20, in other words, the link 20 acts on the intermediate portion 32 of the arm 30. Anti-slip is provided on the surface, that is, the surface where the intermediate portion 32 faces and / or the entire shaft hole of the link 20. The anti-slip is not limited to those having a concavo-convex shape and a sheet having a large friction coefficient attached thereto.

  And the outer periphery of the link 20 is formed with a concave circumferential groove 22 so that the messenger wire 2 to be locked is not removed. However, the outer periphery of the link 20 may be replaced with the concave circumferential groove 22 and the flanges may be formed at both end edges.

  Since it is troublesome to add such a link 20 after the locking means is attached to the utility pole 1, two or three links 20 are supported by the intermediate portion 32 of the arm 30 in advance. Is preferred. Then, as required, two or three messenger wires 2 are locked to each link 20 and installed in two or three directions.

  When one messenger wire 2 is installed on the two power poles 1, 1, as shown in FIG. 2, a messenger wire locking means is attached to each of the power poles 1, 1. Each locking means is attached to the utility pole 1 so that the arm 30 projects in a direction perpendicular to the erection direction of the messenger wire 2. And the link 20 currently supported by each arm 30 is equidistant from each electric pole 1, and the edge part of the messenger wire 2 is latched.

  The messenger wire 2 is installed eccentrically from a line L connecting the centers of the two utility poles 1 and 1. Therefore, as shown in FIG. 4, when a cable 5 such as a telephone line is installed on the two utility poles 1, 1, the lead-in wire 4 branched from the distribution line 3 is wired along the messenger wire 2, The lead-in wire 4 does not come into contact with or close to the cable 5 even if it is drawn into a house or a store after being directed toward the ground.

  And when installing the messenger wire 2 in both directions or three directions across a certain utility pole 1, as shown by the phantom line in FIG. 2, two or three links supported by one arm 30 The end of the messenger wire 2 is locked to each of 20.

  In addition, this invention can be variously changed within the range of the invention specific matter described in the claim, without being limited to the said embodiment. For example, the arm 30 may be L-shaped or I-shaped instead of U-shaped. In this case, the base end portion of the arm 30 may have substantially the same thickness as the interval between the protruding portions 12b of the pair of band pieces 12 and 12. Further, the band 10 is not a combination of the band main body 11 and the band pieces 12, 12, and the band main body 11 may be provided with a protruding portion 12 b.

Is a perspective view showing a Kakaritomete stage for use in the erection process messenger wire in accordance with the present invention. It is a cross-sectional front view which shows one Embodiment of the construction method of the messenger wire which concerns on this invention. It is a cross-sectional front view which shows an example of the latching means of the conventional messenger wire. It is a perspective view containing the utility pole etc. which attached the latching means of the conventional messenger wire.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Telephone pole 2 ... Messenger wire 10 ... Band 11 ... Band main body 12 ... Band piece 12b ... Projection part 20 ... Link 21 ... Shaft hole 22 ... Concave groove 30 ... Arm 33 ... Seat part

Claims (7)

A band wound around the utility pole and provided with a projecting portion projecting from the side surface of the utility pole, an arm fixed to the projecting portion so as to project from the side surface of the utility pole, supported at an arbitrary position of the arm, and A messenger wire is erected between a pair of adjacent power poles by a pair of locking means provided with a link for locking the messenger wire,
Arms attached to the utility pole to each locking means so that the erection direction perpendicular to the direction of the messenger wire, wherein the locking surface of each link is separated from the electric pole the links so as to face the erection direction messenger wire, each link By locking the messenger wire to the locking surface, the line that connects the centers of the adjacent power poles is eccentric to the outside of the side face of the power pole , and the messenger wire is installed parallel to the line. How to install the messenger wire. Attach the above-mentioned locking means, in which two links are supported by an arm, to each adjacent power pole,
The messenger wire installation method according to claim 1, wherein two messenger wires locked to each link are installed in opposite directions . The arm includes a pair of side portions on the protruding portion side of the band and a distal end portion that bridges between the distal ends of the pair of proximal end portions by being formed into a U shape.
Of the pair of side portions, the link is supported on the side portion located on the other locking means side, and the messenger wire is locked to each link, so that one messenger wire is installed between the links. The messenger wire installation method according to claim 1, wherein the messenger wire is installed. The arm includes a pair of side portions on the protruding portion side of the band and a tip portion that bridges between the tips of the pair of side portions by being formed into a U shape,
The method of installing a messenger wire according to claim 1 , wherein the two messenger wires are installed in opposite directions by supporting the links on a pair of side portions and locking the messenger wires to each link. . The arm includes a pair of side portions on the protruding portion side of the band and a tip portion that bridges between the tips of the pair of side portions by being formed into a U shape,
The messenger wire according to claim 1 , wherein three messenger wires are installed in three directions by supporting a link on each of a pair of side portions and a tip portion and locking the messenger wire to each link. Construction method.   6. The method of installing a messenger wire according to claim 1, wherein an anti-slip is provided on at least one joint surface where the arm and the link are joined. 6.   The messenger wire installation method according to any one of claims 1 to 6, wherein flat seat portions sandwiched between a band and a power pole are formed at both ends of the arm.

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