JP2009124790A - Wire guide metal fitting - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide metal fittings that hold a wire at a large angle at drawing, being possible of setting the fixing position of the wire to the structural member of a steel tower to a free position such as up and down and right and left, when drawing in the jumper section of a wire such as an OPGW wire, etc. <P>SOLUTION: The wire guide metal fitting DG1 for holding and guiding the wire d1 to be installed, being attached to an L-shaped structural member 80 L-shaped in cross section, includes a short bolt body 10, a long bolt body 20, two pieces of hooks 12 and 22, a plurality of fastening nuts 14 and 24, a coupling plate 30, and a cable clamp 40. The coupling plate 30, which has the cable clamp 40, is arranged at the extension 20b of the long bolt body 20. It includes a position setting means for arranging the coupling plate 30 in a free position on the extension 20b of the long bolt body 20. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a wire guide fitting that is attached to a structural member such as a steel tower for power transmission lines and grips and guides an electric wire, and more specifically, guides a jumper wire of an overhead electric wire such as OPGW. It is related with a suitable wire guide metal fitting.

Drawing 3 is an explanatory view showing the situation around the steel tower where an electric wire guide metal fitting is installed. The OPGW line here is an optical fiber composite aerial ground wire integrated with an optical fiber incorporated into an aerial ground wire of a power transmission line, and is denoted by d2.
The OPGW line is wired via the steel tower 90 in the same manner as the power transmission line, but a plurality of steel towers are passed by one line, and a jumper part J1 is provided in the middle of the OPGW line. Connected to the installed joint box JB.

Examples of patent documents related to the technical field of the present invention include the following.
JP 05-328575 A (Tokyo Electric Power, Hitachi Cable) JP-A-11-168823 (Hitachi Cable)

  In FIG. 3, the OPGW line (d2) is clamped by the electric wire clamps (c1, c2), and when pulling the jumper portion (J1) of the OPGW line, the OPGW line electric wire guide fitting (OPGW cleat: 91 , 92, 93, 94, 95, etc.) are used. However, with the conventional wire guide fitting, it is impossible to set and hold the OPGW line fixing position in the steel tower structural member at a free position such as up and down or left and right. Therefore, in particular, in the wire guide bracket (91, 92, 93) of the jumper portion (J1) of the OPGW line at the upper part of the steel tower, the OPGW line of the fixed portion held there is distorted or the guided wires are There was a problem of contact.

  The wire guide fitting of the present invention has been made in view of the above-described problems of the related art, and when pulling in the jumper portion of the OPGW line, the fixed position of the wire with respect to the structural member of the steel tower can be freely positioned such as up, down, left and right Provided is a wire guide fitting that can be set to a large angle or can be gripped with a large angle when the wire is drawn in, and does not cause distortion of the OPGW line in the fixed part or contact between the wires. The purpose is that.

In the wire guide fitting of the present invention, the following means are used to achieve the above object. In addition, the code | symbol provided to the component corresponds to that of drawing.
(1) An electric wire guide fitting (DG1) that is attached to an L-shaped structural member (80) having an L-shaped cross section and grips and guides an installed electric wire (d1),
The wire guide fitting (DG1) includes a short bolt body (10), a long bolt body (20), two hooks (12, 22), a plurality of tightening nuts (14, 24), a connecting plate (30), a wire clamp (40)
The short bolt body (10) and the long bolt body (20) are formed in an L shape through a hole (10a) in which one bolt body (10 or 20) penetrates the other bolt body (20 or 10). Combined and arranged along the back of the L-shaped structural member (80),
The short bolt body (10) has one portion of the L-shaped structural member (80) between the side surface of the long bolt body (20) and the first hook (12) fitted to the short bolt body (10). 81), the first hook 12 is tightened by the tightening nut 14 fitted to the short bolt body 10, and the L-shaped structural member 80 is sandwiched.
The long bolt body (20) has a member clamping part (20a) and an extension part (20b) extending in the bolt longitudinal direction,
In the member clamping part (20a), the other part of the L-shaped structural member (80) (between the side surface of the short bolt body (10) and the second hook (22) fitted to the long bolt body (20) ( 82) and a hole (10a) (through the second hook (22) (see FIG. 1) or the bolt body (10) by a tightening nut (24) fitted to the long bolt body (20). Tighten the L-shaped structural member (80)
A connecting plate (30) having a wire clamp (40) is disposed on the extension (20b) of the long bolt body (20),
This electric wire guide fitting (DG1) is provided with a position setting means for arranging the connecting plate (30) at a free position on the extension (20b) of the long bolt body (20).

(2) In the wire guide bracket of (1),
The connecting plate (30) is provided with refracting portions (32a, 32b) for setting an angle with respect to the long bolt body (20). Here, the refracting portion may be configured as a curved portion having a larger radius of curvature when bending.
(3) In the wire guide bracket of (1),
The connecting plate (30) has a long flat plate shape, and an elongated hole (31a) is formed on the connecting plate (30) in order to arrange the electric wire clamp (40) at any position on the connecting plate (30). Is provided.
(4) In the wire guide bracket of (1),
The connecting plate (30) has a long flat plate shape, and is attached to the extension (20b) of the long bolt body (20) via the mounting bracket (50).
In order to arrange the mounting bracket (50) at any position on the connecting plate (30), an elongated hole is provided on the connecting plate (30).
(5) In the wire guide bracket of (3),
The connecting plate (30) is formed in a point-symmetric structure with respect to the center point (30c).

The above-described wire guide fitting according to the present invention has the following special effects.
(1) The height (left and right) position for fixing (gripping) the OPGW line can be freely set and fixed over a wide range, and the R (radius) at the time of drawing in the electric wire can be increased. Even if a plurality of electric wires intersect, a sufficient separation distance can be secured.
In addition, there is a pipe for storing the fiber inside the OPGW line, and distortion generated there can be reduced.
Even if the conventional caching method is changed to the supplementary line caching method, the OPGW line can be gripped by using the wire guide fitting.

(2) It is a structure applicable to both steel tower members such as rain catches and rain shields, and can be fixed in any horizontal or vertical direction, and can be attached in accordance with the intended use.
(3) A long hole mechanism is provided in the connecting plate, and by arranging the wire clamp part in the long hole, it is possible to finely adjust the position between the connecting plate and the clamp.
(4) When the connecting plate is formed into a point-symmetrical structure that is rotated by 180 degrees with respect to the center point and overlapped, a symmetrical structure is obtained vertically and horizontally, and by being inverted up and down, a position below the steel tower member fixing portion is obtained. The electric wire can be drawn into the cable.

Next, an embodiment of the wire guide fitting according to the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a view showing a basic configuration of an electric wire guide fitting DG1 for OPGW line as an embodiment of the electric wire guide fitting according to the present invention.

In FIG. 1, an electric wire guide fitting DG1 according to the present invention is a fitting that is attached to an L-shaped structural member 80 having an L-shaped cross section and holds and guides an electric wire d1 to be laid by an electric wire clamp 40.
The wire guide fitting DG1 includes a short bolt body 10, a long bolt body 20, a first hook 12 fitted to the short bolt body 10 side, a tightening nut 14 thereof, and a second hook 22 fitted to the long bolt body 20 side. The tightening nut 24 is provided.
And the connection board 30 is attached to the extension part 20b of the long volt | bolt body 20 via the attachment metal fitting 50, and the electric wire clamp 41 for holding an electric wire is provided in the predetermined location on the connection board 30. Yes.

The short bolt body 10 and the long bolt body 20 attached to the L-shaped structural member 80 are configured such that one bolt body is combined in an L shape through a hole passing through the other bolt body, and these are L-shaped structures. The structure is arranged along the back surface of the member 80.
In the wire guide fitting DG1 of FIG. 1, the short bolt body 10 and the long bolt body 20 have a structure in which two long and short bolt bodies are combined in the engaging portion k1 located at the L-shaped top of the L-shaped structural member 80. Yes, the long bolt body 20 is inserted into the through hole 10a at one end of the short bolt body 10, and is engaged with the hole 10a of the short bolt body 10 at a position reaching the head 20t of the long bolt body. The short bolt body 10 and the long bolt body 20 have an L shape adapted to the shape of the back surface of the L-shaped structural member 80.

  When sandwiching the L-shaped structural member 80 by combining the short bolt body 10 and the long bolt body 20, the short bolt body 10 includes the first hook 12 fitted to the side surface of the long bolt body 20 and the short bolt body 10. Between the two, a portion 81 of the L-shaped structural member 80 is disposed, and the first hook 12 is tightened by the tightening nut 12 fitted to the short bolt body 10 to sandwich the L-shaped structural member 80. The dimension from the end 10t of the short bolt body 10 to the center of the hole 10a is set to B.

The long bolt body 20 has a length dimension A from the bolt end 20t ′ to the bottom of the bolt head 20t, and this length dimension A is a dimension of the member clamping portion 20a for clamping the L-shaped structural member 80. a and a dimension b of an extension 20b extending in the bolt longitudinal direction from the member clamping portion 20a.
In this member clamping portion 20a, a portion 82 of the L-shaped structural member 80 is disposed between the side surface of the short bolt body 10 and the second hook 22 fitted to the long bolt body 20, so that the long bolt body 20 is fitted. The L-shaped structural member 80 is clamped by tightening the second hook 22 with the tightened nut 24.

A connecting plate 30 is disposed on the extension 20 b of the long bolt body 20 by a mounting bracket 50. The mounting bracket 50 has an insertion hole 50a having a diameter larger than that of the long bolt body 20 at the center thereof, and the extension portion 20b can be freely moved by penetrating the extension portion 20b of the long bolt body 20 therein. It is.
Further, the long bolt body 20 is threaded through the member clamping portion 20a-extension portion 20b, and the mounting bracket 50 is positioned at a desired position in the extension portion 20b by fastening nuts 52 and 54 provided before and after the long bolt body 20. Tightened and fixed.
A cap 26 may be attached to the outermost end of the long bolt body 20.

  In this way, in the wire guide fitting DG1, when the connection plate 30 is attached to the long bolt body 20, the connection plate 30 can be arranged at any position on the extension 20b of the long bolt body 20. When the movable distance of the connecting plate 30 is “h”, the length of the extension portion 20b is “b”. Therefore, if the thicknesses (lengths) of the fastening nuts 52 and 54 and the mounting bracket 50 are taken into consideration. The maximum distance that the connecting plate 30 moves can be obtained by easily calculating “hmax”.

As for the connecting plate of the present invention, it is of course possible to use a single plate having a long flat plate shape without bending, but the connecting plate 30 shown in FIG. “Refractive portions 32a and 32b” for attaching are provided at two locations.
In addition, an elongated hole 31 a is provided on the connection plate 30 for arranging the wire clamp 40 at any position on the connection plate 30.
Further, the connecting plate 30 is mounted on the extension portion 20b of the long bolt body 20 via the mounting bracket 50, and the elongated hole portion 31b is also formed on the connecting plate 30 in order to arrange the mounting bracket 50 at a free position. Is provided.

With the configuration as described above, the wire guide fitting DG1 of FIG. 1 can ensure the vertical distance H1 and the horizontal distance H2 from the center of the gripped wire d1 to the L-shaped structural member 80 and the apex 80t.
Here, the vertical distance H1 is determined by the moving distance h of the connecting plate 30 on the extended portion 20b of the long bolt body 20 and the angle (α and α ′) of the connecting plate 30. This is obtained by two elongated holes (31a, 31b) provided in the connecting plate 30 on the extended portion 20b, and both of them are free in terms of dimensions compared to similar conventional metal fittings. A large degree can be taken.

  And in the electric wire guide metal fitting DG1 shown in FIG. 1, the connection board 30 is formed in the point symmetrical structure with respect to the center point 30c. As a result, the overall length M1 of the connecting plate 30 is equal to the widths m1 and m2 of the elongated holes (31a, 31b) in the longitudinal direction, from the center of the elongated holes (31a, 31b) to the center point (30c). The dimensions M2 and M3 are equal, and the dimensions M4 and M5 from the refracting portions (32a, 32b) to the center point (30c) are designed to be equal. By adopting this point-symmetric structure, the connecting plates are rotated by 180 degrees with respect to the center point and overlapped, and a symmetrical structure can be obtained vertically or horizontally. It becomes possible to pull in the wire.

In manufacturing the wire guide fitting DG1 of FIG. 1, each dimension of each component “A, B, a, b, h, α, α ′, t, M1, M2, M3, M4, M5, m1, m2 The value of “, m3, etc.” depends on the specifications of the L-shaped structural member to be installed (such as angle steel), the specifications of the short and long bolts, the tightening torque, the specifications of the electric wire to be gripped, and the guidance status of the electric wire on the tower. In addition, it can be designed and determined appropriately.
The L-shaped structural member 80 has been described as being in the “L” position (9 o'clock position on the watch) in both FIG. 1 and FIG. 2, but the “L” position is 360 degrees. Of course, the wire guide fitting according to the present invention can also be designed in accordance with the position of “L” because it can be arranged at any angle.

Now, a wire guide fitting DG2 shown in FIG. 2 is a modification of the wire guide fitting DG1 shown in FIG. The constituent members of the wire guide fitting DG2 are the same as those of the wire guide fitting DG1, and the mounting method (direction) to the L-shaped structural member 80 is changed.
In the wire guide fitting DG1 in FIG. 1, the short bolt body 10 faces in the left-right (horizontal) direction and the long and short bolt body 20 faces in the up-down (vertical) direction, but the wire guide fitting DG2 in FIG. Are attached in the vertical (vertical) direction, and the long and short bolt body 20 is directed in the horizontal (horizontal) direction.

The method of attaching the wire guide fitting DG2 shown in FIG. 2 to the L-shaped structural member 80 is different from the wire guide fitting DG1 of FIG. 1 as follows.
In the short bolt body 10, one portion 82 of the L-shaped structural member 80 is disposed between the side surface of the long bolt body 20 and the first hook 12 fitted to the short bolt body 10. The first hook 12 is tightened by the fitted tightening nut 14 to sandwich the L-shaped structural member 80.
Further, the long bolt body 20 has the other portion 81 of the L-shaped structural member 80 disposed between the side surface of the short bolt body 10 and the second hook 22 fitted to the end of the long bolt body 20. The L-shaped structural member 80 is clamped by tightening from the side of the through hole 10 a of the bolt body 10 by a tightening nut 24 fitted to the long bolt body 20.

As described above, as described for the wire guide fitting according to the present invention, (1) the long bolt body has the member clamping portion and the extension portion extending in the bolt longitudinal direction, and the connecting plate is disposed in the extension portion. (2) The connecting plate is provided with a refracting portion or a curved portion for making an angle with respect to the long bolt body, and (3) an elongate wire clamp that is movable on the connecting plate is movable. Providing a hole on the connecting plate; (4) providing an elongated hole on the connecting plate so that the mounting bracket for fixing the connecting plate can move; and (5) connecting plate with respect to its center point. It has a structure unique to the present invention that it is formed in a point-symmetric structure.
As a result, in the wire guide fitting according to the present invention, the height and right and left positions for fixing (gripping) the wire can be freely set in a wide range, and the R (radius) when pulling in the wire is increased. Even if a plurality of electric wires cross each other, a sufficient separation distance can be secured, and further, different attachment methods to the L-shaped structural member can be made by using electric wire guide fittings made of the same constituent members. .

It is a block diagram which shows one Embodiment of the wire guide metal fitting by this invention. It is a block diagram which shows other embodiment of the wire guide metal fitting by this invention. It is explanatory drawing which shows the condition around the steel tower in which an electric wire guide metal fitting is installed.

Explanation of symbols

DG1, DG2 Wire guide fitting 10 Short bolt body 10a Through-hole portion of short bolt body 20 Long bolt body 20a Member clamping portion of long bolt body 20b Extension portion of long bolt body 12 First hook (short bolt body side)
22 Second hook (long bolt body side)
14 Tightening nut (short bolt body side)
24 Tightening nut (long bolt body side)
30 Connection plate 30c Center point of connection plate 31b Elongated hole on connection plate 32a, 32b Refraction part (curved part) of connection plate
40 Wire clamp 50 Connecting plate mounting bracket 80 L-shaped structural member 81 One part of the L-shaped structural member 82 Other part of the L-shaped structural member d1 Electric wire

Claims (5)

An electric wire guide fitting attached to an L-shaped structural member having an L-shaped cross section for gripping and guiding an installed electric wire,
The wire guide fitting includes a short bolt body, a long bolt body, two hooks, a plurality of tightening nuts, a connecting plate, and an electric wire clamp.
The short bolt body and the long bolt body are arranged along the back surface of the L-shaped structural member, in which one bolt body is combined in an L shape through a hole passing through the other bolt body,
The short bolt body is fitted to the short bolt body by disposing one portion of the L-shaped structural member between a side surface of the long bolt body and a first hook fitted to the short bolt body. The first hook is tightened with the tightening nut, and the L-shaped structural member is sandwiched.
The long bolt body has a member clamping part and an extension part extending in the bolt longitudinal direction,
In the member clamping portion, the other part of the L-shaped structural member is disposed between the side surface of the short bolt body and the second hook fitted to the long bolt body, and is fitted to the long bolt body. The second hook or the short bolt body is tightened by a tightening nut to sandwich the L-shaped structural member,
The extension plate of the long bolt body is provided with the connecting plate having the electric wire clamp,
An electric wire guide fitting comprising position setting means for arranging the connecting plate at a free position on an extension of the long bolt body. In the wire guide fitting according to claim 1,
The wire guide fitting, wherein the connecting plate is provided with a refracting portion or a bending portion for providing an angle with respect to the long bolt body. In the wire guide fitting according to claim 1,
The connecting plate has a long flat plate shape, and an elongated hole portion is provided in order to arrange the electric wire clamp at a free position on the connecting plate. In the wire guide fitting according to claim 1,
The connecting plate has a long flat plate shape, and is attached on an extension of the long bolt body via a mounting bracket,
In order to arrange the mounting bracket at any position on the connecting plate, an elongated hole is provided on the connecting plate. In the electric wire guide metal fitting in any one of Claims 1-4,
The wire guide fitting, wherein the connecting plate is formed in a point-symmetric structure.

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