JPS63110902A - Method of anchoring through wire and anchoring clamp fitting used for the same - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention provides a method for securing a feed line stretched to a utility pole via an insulator supported by a support arm to a tension insulator attached to the support arm. It is about how to do it.

(Conventional technology) When constructing street lines strung on consecutive utility poles,
The utility poles are located at both ends of the construction zone, and the street lines outside the construction zone are held back by the utility poles. Since the installation cost would increase if a restraining device for detaining a passing wire is installed on all utility poles, conventionally, a detaining utility pole with a permanent restraining device installed every several poles has been installed in advance.

(Problem to be solved by the invention) However, according to the above-mentioned conventional example, if a detention device is not installed on each adjacent utility pole across the required location, the construction section is extended to the location where a detention pole is installed. The problem is that you have to do it. Extending the construction section not only increases construction costs such as laying bypass cables, but also causes the problem of expanding the power outage area.

In view of the above, the present inventors first connected the connecting part of the retaining clamp to the support arm that supports the insulator of the utility pole, to which the feed line is stretched through the insulator, through a tightening tool, and After gripping and holding with the retaining clamp and then retracting the tightening tool to support the line in the lowered position, the base end is attached to the cross arm and held approximately horizontally at the tip of the tension insulator,
We came up with a method to connect the connecting parts of the retaining clamps and conducted experiments.

However, the tensioning tool that supports the feed line in the lowered position and the tension insulator held approximately horizontally weigh vertically and interfere with each other, creating a large vertical gap between them. It became clear that the problem was that it was not possible to easily relocate the equipment to Zhang Insulator. The same results were obtained with a conventional retaining clamp that had two connecting sections on the upper and lower sides. In other words, the vertical distance between both connecting parts is
This is because it is smaller than the vertical distance between the tightening tool and the tension insulator.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the method of the present invention for retaining the street wires is to provide support for supporting the insulators of the utility poles on which the street wires are stretched through the insulators. First, connect the tensioning device connection part extending below the tension insulator connection part of the retention clamp to the arm via the tensioning tool, grip the line with the retention clamp, and then attach the tensioning tool. After the tension insulator is shortened and supported in the lowered position, the tension insulator connecting portion of the retaining clamp is connected to the tip of the tension insulator whose base end is attached to the support arm and held substantially horizontally. The retaining clamp fitting used in the above method of the present invention is provided with an upper connecting part at the upper part of the proximal side of the main body, and a connecting part for the tightening tool at the lower part of the proximal side of the main body. It is characterized by having a feed line engaging portion on the side and a retaining clamp engaging portion midway between the base end and the distal end of the main body.

(Function) According to the method of the present invention for retaining a street line, a restraining clamp that grips a street line is connected to a support arm that supports an insulator of a utility pole via a tensioning tool, and then the tensioning tool By contracting the line, the line is supported in the lowered position. At this time, the tightening tool is approximately horizontal. Thereafter, when the tension insulator is attached at its base end to the support arm and held substantially horizontally, the tension insulator and the tightening tool weigh vertically and interfere with each other, creating a vertical gap between them.

However, by using a retaining clamp in which the connection part for the tensioning device is extended below the connection part for the tension insulator, it is possible to maintain a sufficient vertical distance between the two connections, so that the above-mentioned interference between the tensioning device and the tension insulator can be maintained. It is possible to easily move the connection of the retaining clamp from the tightening tool to the tension insulator and retain the line without being affected by the above.

What's more, this work to tie down the line can be done on any utility pole equipped with an insulator support arm, by repeatedly using the same simple tools such as tightening tools, tie clamps, and tension insulators. Therefore, the above-mentioned work can be easily carried out on each utility pole adjacent to each other with the required location in between, without installing a restraining device on all utility poles. As a result, it is possible to reduce the construction section between the shortest utility poles, significantly reducing construction costs, and to minimize the power outage area.

Further, according to the retaining clamp fixture of the present invention, since the connecting portion for the tightening tool at the lower part of the proximal end of the main body is located below the upper connecting portion at the upper end of the proximal end of the main body, the upper connecting portion cannot be restrained. By connecting to the clamp, the tightening device connecting portion can be easily extended below the tension insulator connecting portion of the retaining clamp.

By engaging the line engagement part at the tip of the main body with the line from above, the upper connecting part is prevented from rotating downward about the tightening tool connecting part when the line is supported in the lowered position. Therefore, the upper connecting portion can be held at a substantially constant height with respect to the tightening tool connecting portion, and the retaining clamp held by the feed line can hold the upper connecting portion due to the tension of the feed line. Since the downward rotation about the center can be restricted by the retention clamp locking part located halfway between the base end and the tip of the main body, the connection between the tension insulator connection part and the tightening tool connection part can be restricted. The vertical distance between the tension insulators can be maintained substantially constant, and the tension insulator connecting part can be prevented from separating forward from the tip of the tension insulator, so that the tension insulator connecting part and the tension insulator connecting part can be The positional relationship with the tightening tool connecting portion can be obtained in close proximity. Therefore, it is possible to easily and smoothly move the connection of the tie-down clamp that grips the line from the tightening tool to the tension insulator to hold the line.

(Example) An example of the present invention will be described based on FIGS. 1 to 4.

FIG. 4 shows the retaining clamp fixture 1 used in this embodiment. The main body 2 extends from the base end 2a to the distal end 2b side,
It has an abbreviated shape with the tip 2b side bent upward.

An auxiliary rod 3 is fixed to the base end 2a side by welding and revection fastening. Upper connecting hole (upper connecting part) 4 in the auxiliary rod 3
b, and a turnbuckle connecting hole (tightening tool connecting portion) 4c is provided at the base end 2a. On the other hand, the main body 2
A guide roller (passing line engagement part) 5 is provided at the tip 2b of the
and the base end 2a between the base end 2a and the tip 2b of the main body 2;
Nearby, the retention clamp locking base (retention clamp locking part) 6
has been established.

A method of retaining the feed line A using the retaining clamp fixture 1 configured as described above will be explained.

The reference numeral 7 in FIG. 1 is a utility pole, and a support arm 8 is installed horizontally on the utility pole 7. An insulator 9 is fixed to the insulator 8 with a bolt 10, and a through line A is stretched to the utility pole 7 via the insulator 9. First, the upper connecting hole 4b of the retaining clamp fixture 1 is connected to the lower connecting hole 4d of the retaining clamp 4, thereby forming the turnbuckle connecting hole 4c of the retaining clamp 4. The turnbuckle connection hole 4
c to the above-mentioned reading 8 of the utility pole 7 with a turnbuckle (tightening device) 1
1, and the passage 'aA' is held by the retaining clamp 4. The guide roller 5 of the retaining clamp fixture 1 is located above the line A.

Next, while retracting the turnbuckle 11, connect the through line A to the insulator 9.
Loosen the fixed state at , and support the guide line A in the lowered position as shown in FIG.

The turnbuckle 11 is substantially horizontal like the through line A.

A tension insulator 12 is attached to the reading 8 via a strap 13 and held substantially horizontally. At this time, the retaining clamp 4 is rotated downward clockwise in the figure around the lower connecting hole 4d due to the tension of the feed line A. However, the guide roller 5 of the retaining clamp fixture 1 engages with the through line A, and the downward clockwise rotation of the retaining clamp fixture 1 is restricted, and the retaining clamp locking base 6 is attached to the retaining clamp 4. It abuts from below and restricts its downward rotation. Therefore, the vertical distance between the tension insulator connection hole 4a and the turnbuckle connection hole 4c of the retaining clamp 4 can be maintained substantially constant, and the tension insulator connection hole 4a can be connected to the tension insulator connection hole 4a. It can be prevented from moving forward away from the tip connection hole (tip) 12a of No. 12. As a result, the positional relationship between the tension insulator connection hole 4a and the tip connection hole 12a of the tension insulator 12 can be maintained in a close state as shown in FIG.

By connecting these tension insulator connection holes 4a and the tip connection hole 12a of the tension insulator 12 with a connecting pin 13, it is possible to hold the line 'aA' as shown in FIG.

The present invention can be configured in various ways other than those shown in the above embodiments. For example, the shape of the detent clamp fitting is not limited to the above embodiments. In addition to the turnbuckle type tightening device, a wire tensioning type can also be used.

(Effects of the Invention) Since the wire retaining method of the present invention has the above-described configuration and operation, it can be used with any utility pole equipped with an insulator support arm using simple tools such as a tightening tool, a retaining clamp, and a tension-resistant insulator. Not only can the same thing be used repeatedly, but it is also easy to hold the line at the adjacent utility poles across the required area without being affected by interference between the tightening tool and the tension insulator. As a result, it is possible to reduce the construction section to the shortest distance between utility poles, significantly reducing construction costs, and to minimize power outage areas.

Furthermore, since the retaining clamp fixture of the present invention has the above-described structure and function, the positional relationship between the tensile insulator connecting portion and the tightening device connecting portion of the retaining clamp can be obtained in close proximity, and as a result, it is possible to grasp the passing line. This has the effect that the work of relocating the connection of the held retaining clamp from the tightening tool to the tension insulator and securing the passing line can be carried out easily and smoothly.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of the present invention, FIG. 2 is a front view showing a state in which the through line is supported in a pulled down position, and FIG. 3 is a front view showing a state in which the through line is held in place. , FIG. 4 is a perspective view showing the retaining clamp fitting.

Claims (2)

[Claims] (1) First, attach the connecting part for the tensioning device extending below the connecting part for the tension-resistant insulator of the retaining clamp to the support arm that supports the insulator of the utility pole on which the line is stretched through the insulator. At the same time, the guide line was grasped and held by the retaining clamp, and then the tightening tool was retracted to support the guide line in the lowered position, and then the proximal end was attached to the support arm and held approximately horizontally. A method for making a through line into a tie-down, characterized by connecting the tension-proof insulator connecting part of a tie-down clamp to the tip of the tension-proof insulator. (2) An upper connecting part is provided at the upper part of the proximal end of the main body, and a connecting part for a tightening tool is provided at the lower part of the proximal end of the main body, and a through-line engagement part is provided at the distal end of the main body, and A retaining clamp attachment tool used for a method of retaining a feed line, characterized in that a retaining clamp locking part is provided midway between it and the tip.