JPH047632Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is suitable for use with electric wire fasteners, such as steel towers, especially for pulling down electric wires such as overhead ground wires with built-in optical fibers installed at the tip of the tower. The present invention relates to a wire fastening fitting provided at the tip of a steel tower, for example, for fixing the wire being pulled down to the steel tower.

[Conventional technology]

An example of this kind of conventional electric wire fastener is one shown in FIG. 9.

In the figure, reference numeral 1 denotes a steel tower member constituting the steel tower, 2 a wire gripping device for gripping electric wires, 3 a tower mounting device for attaching and fixing the wire gripping device 2 to the tower member 1, and 4 a tower mounting device 3. This is a connecting member that connects the electric wire gripping device 2.

[Problem that the invention attempts to solve]

Conventional electric wire clamps are constructed as described above, but if the electric wire is an electric wire such as an overhead ground wire with built-in optical fiber installed on a steel tower, it is necessary to pull it down from the tower. In this case, it is necessary for the wires to be pulled down into the tower at the tip of the tower arm, which is the lead-in part into the tower, so as not to adversely affect the optical signals being transmitted by the wires. It is necessary to arrange the wires that are drawn down from the state so that they intersect.

However, as shown in FIG. 9, in the conventional electric wire clamp, there is little freedom in the installation direction of the electric wire gripping device 2, and it is difficult to arrange the electric wire in a desired direction. The problem is that it is even more difficult to pull it down.

This invention was made in order to solve the above problems, and the purpose is to obtain a wire stopper that freely stops two wires drawn down from the wire pulling-down part in a desired direction. .

[Means for solving problems]

In order to achieve the above object, the electric wire fastener according to this invention has a plate-like shape having a base end for fixing to a steel tower and a bent part that is bent back and forth at approximately right angles from this base end. A base connecting member, two plate-like tip connecting members each having one end screwed onto the bent portion of the base connecting member and the other end bent at a substantially right angle from the one end; It consists of bolt holes formed at the other ends of the connecting members, and a wire gripping device that is attached to the bolt holes with mounting bolts.

[Effect]

Since the electric wire fastener according to this invention is constructed as described above, when the tip connecting member is screwed onto the bent portion, the attachment angle of the tip connecting member can be freely set on a plane including the bent portion. In addition, when installing the wire gripping device, the installation angle of the wire gripping device can be freely set on a plane that is approximately perpendicular to the plane including the bent portion, so that the two wires being pulled down can be can be gripped by a wire gripping device depending on its direction.

〔Example〕

This invention will be explained below based on figures showing examples thereof.

In FIGS. 1 to 3 showing the first embodiment, reference numeral 2 designates a wire gripping device similar to that in the conventional device. Next, reference numeral 11 is a plate-shaped base connecting member, the base end of which is attached to a steel tower etc.
The lower portion has bent portions 12a and 12b which are bent at approximately right angles in the front and rear directions (as viewed in FIG. 1). Reference numeral 13 denotes a plate-shaped tip connecting member, which is bent at a substantially right angle from one end to the other end;
One end is rotatably bolted to each bending part 12a, 12b with a bolt 14, and a wire gripping device 2 is attached to the other end with a mounting bolt 1.
5, it is rotatably bolted.

Since this first embodiment is configured as described above, the base connecting member 11 and the tip connecting member 13
It can be rotated in the required direction around the bolt 14 between it, and it can be rotated in the required direction around the mounting bolt 15 between the tip connecting member 13 and the wire gripping device 2. Therefore, the direction of the electric wire attached to the electric wire gripping device 2 can be set freely.

Further, in the second embodiment shown in FIGS. 4 to 6, a vibration damping member is provided at the lower end of the tip connecting member 23.
For example, a vibration damping member 24 made of rubber or metal mesh is provided, and the wire gripping device 2 is attached via the vibration damping member 24 with a mounting bolt 25. Further, a vibration damping member 24 is also provided between the lower connecting member 23 and the wire gripping device 2 .

Note that the other parts are the same as those in the first embodiment showing the first embodiment.
- Same as Figure 3.

Since this second embodiment is configured as described above, the main line connects the base and tip connecting members 1 to 1.
Vibration that enters through the clamps 1 and 23 is blocked or relaxed by the vibration damping members 24 and 26, so that the stress in the wire at the clamp mouth does not increase.

Since the electric wire fastener of this invention is constructed as described above, it is used as shown in FIG. 7 and in detail in FIG. 8.

In addition, in the same figure, the reference numeral 31 is a connecting fitting;
Reference numeral 2 indicates a stop portion, 33 indicates an electric wire, for example, an optical fiber built-in overhead ground wire, and 34 indicates a wire fastening fitting of this invention. Therefore, the electric wire 33 is smoothly drawn down from the tip of the tower while crossing inside the tower.

[Effect of idea]

As described above, according to this invention, when the tip connecting member is screwed onto the bent part, the attachment angle of the tip connecting member can be freely set on a plane including the bent part, and the wire gripping member can be freely set. When installing the device, since the wire gripping device can freely set its mounting angle on a plane that is substantially perpendicular to the plane including the bent portion, the direction of the wire gripped by the wire gripping device can be set freely. Therefore, the two wires pulled down from the pull-down section can be moved in the required direction, e.g.
Even if it is lowered, it has the effect of providing a wire clamp that can be freely disposed by the wire gripping device.

[Brief explanation of the drawing]

Figure 1 is a front view of the first embodiment of this invention;
The figures are a right side view of Fig. 1, Fig. 3 is a bottom view of Fig. 1, Fig. 4 is a front view of the second embodiment of this invention, Fig. 5 is a right side view of Fig. 4, and Fig. 6 is a right side view of Fig. 1. The figure is a bottom view of Fig. 4, Fig. 7 is a perspective view of the embodiment of this invention installed on a steel tower, Fig. 8 is a detailed enlarged view of section A in Fig. 7, and Fig. 9 is a conventional electric wire. It is a front view of a stopper. 2... Electric wire gripping device, 11... Base connection member,
12a, 12b...Bending portion, 13, 23...Tip connecting member, 14...Bolt, 15, 25...Mounting bolt, 24, 26...Vibration mitigation member.

Claims (1)

[Claims for Utility Model Registration] (1) A plate-shaped base connecting member having a base end portion for fixing to a steel tower and a bent portion extending from the base end back and forth at approximately right angles; Two plate-like tip connecting members each having one end that is screwed onto the bent portion of the base connecting member and the other end that is bent at a substantially right angle from this one end, and the other end of each of the tip connecting members. 1. An electric wire fastener comprising bolt holes formed in each part, and an electric wire gripping device attached to the bolt holes with respective mounting bolts. (2) The electric wire fastener according to claim 1, characterized in that a vibration damping member is interposed between the tip connecting member and the wire gripping device to reduce the transmission of vibrations.