JPH0145217Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a vibration isolator for overhead electric wires, and particularly to a vibration isolator for overhead electric wires of a type that prevents vibration by providing an extension wire.

[Conventional technology]

As an example of a conventional vibration isolator for overhead electric wires of this kind, as shown in FIG.
Both ends of the first attachment wire 2 on the side are attached to the overhead electric wire 3, and the second and subsequent attachment wires 4a, 4b connect the fixing member 1 side end 5 to the attachment wire on the fixing member 1 side, for example, the second attachment wire 3. The attachment wire 4a is attached to the first attachment wire 2 near the attachment portion 6 on the side opposite to the fixed member of the first attachment wire 2, and the end portion 7 on the opposite side to the fixed member is attached to the span of the overhead electric wire 3. It is being

Another example is the one shown in FIG. 4, in which the first, second, third... wires 4c, 4d, 4e all have a common end on the side of the fixing member 1. It is attached to the starting point 0, and the end portions on the opposite side of the fixed member are attached to the spans of the overhead electric wires 3, respectively.

As described above, the end portions of the first attachment wire 2 in the first example and all the attachment wires 4c, 4d, and 4e in the second example on the side of the fixing member 1 are attached to the span of the overhead electric wire 3 as shown in both figures. Also, it may be attached to a fixed member 1 such as a tower body. Furthermore, each extension line 4a to 4e
may be provided toward the side of the overhead electric wire 3 as shown in FIG. 3, or may be provided toward the bottom as shown in FIG.

[Problem that the invention attempts to solve]

Conventional vibration isolators for overhead wires are constructed as described above, but in the type shown in the first example above, the attachment part on the fixed member side of each extension wire is attached to the attachment part on the fixed member side. If there are many extension wires because they are installed close to the anti-fixation member attachment part,
The overall length is longer, and therefore, when installing the attachment wire, the distance from which the wire extends is longer, resulting in twisting of the electric wire due to the gravity of the worker and the spacer, and the work of attaching the attachment wire. This also increases the difficulty and takes a long time.

In addition, in the type shown in the second example above, the starting point of the extension wire overlaps with the starting point of multiple extension wires, and especially when this starting point is within the span, a large load is applied to the overhead power line. As a result, the strain on the overhead power lines became large, and there was a risk that the overhead power lines would break.

[Means for solving problems]

The present invention improves the above-mentioned points in the conventional device, prevents a large load from being applied to the starting point of the wire, and shortens the overall length of the wire to reduce the length of the wire when attaching the wire. This was done for the purpose of preventing the twisting of overhead power lines, improving the ease and safety of work, and shortening the required time. The wire is characterized in that its end on the fixed member side is attached to the fixed member side from the center point of the attached wire on the fixed member side, and the other end is attached to the overhead electric wire.

〔Example〕

Hereinafter, the present invention will be explained based on FIGS. 1 and 2 showing the first and second embodiments thereof.

As shown in the figures, what is shown in FIG. 1 is a vibration isolator of the same type as that shown in FIG. 3, and that shown in FIG. 2 is a vibration isolator of the same type as that shown in FIG.

In the figure, reference numerals 11a and 12a are not shown fixing members, for example, first extension wires on the tower body side, 11
b, 11c are the second and third extension lines, and 1
2b and 12c are also the second and third extension lines, and unlike the example in FIG. 4, the starting point 0 of the extension lines is the first extension line 1.
Only the fixed member side ends of 1a and 12a are attached.

Then, the second and third extension lines 11b, 11c, 12
Fixed member side ends 11b1, 11c1 of b, 12c
and 12b1, 12c1 are the respective extension lines 11
Fixed member side attachment wire 1 of b, 11c, 12b, 12c
Center points Pa, Pb of 1a, 11b, 12a, 12b
It is attached to the fixed member side, and the opposite end portions 11b2, 11c2, 12b2, 12c
2 are attached to the spans of the overhead electric wires 3, respectively.

In addition, in the above embodiment, the first extension lines 11a, 12
Although the example is shown in which the fixing member side ends 11a1 and 12a1 of a are both attached to the span of the overhead electric wire 3,
The invention is not limited to this, but may be provided on a fixed member, and
The attachments at each end of the wire may be of any type. Furthermore, the attachment direction of the attachment wire may be the horizontal direction shown in FIG. 1, as in the conventional device, and
The direction directly below as shown in FIG. 2 may be used.

[Effect of idea]

Since the present invention is configured as described above, the wire extension is more convenient than the conventional device in which the end of each extension wire on the fixed member side is attached to the side opposite to the fixed member from the center point of the extension wire on the fixed member side. The total length L of the wire is shortened, and the length of the wire that extends when attaching the wire is also shortened.As a result, there is less twisting of the overhead wire, making the work easier and safer, and the time required is shortened. Since only the fixed member side end of the first extension wire is attached to the starting point, an excessive load is not applied to the overhead wire, and therefore the wire is not strained too much and there is no risk of wire breakage. This has the effect that the following can be obtained.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a first embodiment of the device of the present invention, Fig. 2 is a perspective view of a second embodiment of the device of the present invention, and Figs. 3 and 4 are perspective views showing two examples of conventional devices. be. 1... Fixed member (tower body), 3... Overhead electric wire, 1
1a, 12a...first extension line, 11b, 11c, 1
2b, 12c... extension line, Pa, Pb... central point.

Claims (1)

[Claims for Utility Model Registration] (1) One end of one of the plurality of attachment wires on the fixed member side is attached to either the fixed member or the span of the overhead wire, and the other end is attached to the span of the overhead wire. A vibration isolator for an overhead electric wire, characterized in that one end of the other attachment wire is attached to the fixed member side from the center point of the attachment wire on the fixed member side, and the other end is attached to the overhead electric wire. . (2) The vibration isolator for overhead electric wires according to claim 1 of the utility model registration claim, wherein the attachment wire is attached at an angle to the vertical direction of the overhead electric wire. (3) The protection for overhead electric wires according to claim 2 of the utility model registration claim, in which the attachment wires are attached at an angle with the vertical direction of the overhead electric wires, and the attachment wires are attached alternately with respect to the vertical direction of the overhead electric wires. Shaking device. (4) Attachment wires are installed directly below overhead electric wires.
Vibration isolating device for overhead electric wires as described in .