JP3243045B2 - Wire intermediate support - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intermediate wire support for supporting an intermediate portion of an overhead distribution wire on a pin insulator.

[0002]

2. Description of the Related Art An electric wire comprising a helical wrapping member provided with a helical body wound around an electric wire at both ends in the longitudinal direction of a tough elastic linear body and an insulator mounting engagement portion or a binding portion at an intermediate portion. Supporting the intermediate portion of the overhead distribution line to the pin insulator with the intermediate support has conventionally been widely performed.
Such a wire intermediate support is disclosed in Japanese Utility Model Publication No. 50-3062.
3, No. 50-28393, No. 50-254
No. 95 has been proposed.

[0003]

In recent years, the construction of overhead distribution lines has been carried out in a state of uninterruptible power and live lines. In order to ensure the safety of workers, workers on work vehicle buckets are insulated. In many cases, the work is performed by the hot stick method, in which the work is performed by operating a tool at the end of a sex operation rod.

[0004] In order to use the above-mentioned wire intermediate support to intermediately support the distribution line on the pin insulator, an operation of fixing the spiral wrapping device to the insulator head or neck and the operation of attaching the wire to the insulator head or neck are described. It is necessary to perform three operations, that is, the operation of closely holding the electric wire and the operation of winding the spiral body of the spiral wrapping tool around the closely held electric wire, almost in parallel.

Performing these three operations at the same time in parallel can be performed relatively easily without difficulty when directly performed by hand, but the tool at the tip of the long operation rod is operated by the hot stick method. When performing such operations, there is a disadvantage that the operation is not easy, and that the execution of the operation requires a joint operation of a plurality of workers.

[0006] The present invention has been made in view of the above points, and by enabling the above three operations to be performed sequentially step by step, the construction can be easily performed by one worker by the hot stick method. It is an object of the present invention to propose an electric wire intermediate support that can be used.

[0007]

A wire intermediate support according to the present invention is provided with a spiral wrapping device of an elastic metal wire for supporting a wire by providing a helical wire on both sides of a center portion and winding the wire around the wire.
A holder provided with an insulator coupling portion to be coupled to the insulator and an electric wire receiving portion formed on the joint side and temporarily retaining an electric wire to be supported; and The electric wire receiving portion is characterized by comprising a binding portion for projecting the wire receiving portion substantially in the lateral direction and binding the holding tool and the central portion of the spiral wrapping tool. The present invention also provides a helical wrapping device for an elastic metal wire having an insulator coupling portion to be provided at a central portion to be coupled to an insulator and a helical wire supporting the electric wire by being wound around the electric wire on both sides of the central portion. And a holder having an electric wire receiving portion for temporarily holding an electric wire to be supported, and a wire receiving portion of the holding device protruding substantially in a lateral direction with respect to the direction of the spiral wire, thereby forming the holding device and the spiral winding. And a connecting part for connecting the insulator connecting part at the center of the attachment. Such a holder is preferably made of an elastic metal wire, and an elastic metal wire having a wire receiving portion arranged on a free end side can be adopted. Further, a heat-shrinkable tube for arranging and surrounding the spiral wrapping tool and the holding tool side by side is used as the binding portion. In particular, the binding portion may be composed of the wrapped and tied binding yarn, and a heat-shrinkable tube that surrounds and fixes the helical wrapping tool and the holder from above the wrapped binding yarn. Further, the insulator coupling portion includes a circular arc portion in which the elastic metal wire can be fitted into the insulator neck portion, and a narrowing portion in which the elastic metal wire is bent inward from the insulator neck portion following the circular arc portion so as to be elastically fitted and fixed to the neck portion. And a structure that is formed and configured by the part. Further, the above-mentioned holder of the wire intermediate support of the present invention may be formed from an integral metal fitting, and a ring which can be bolted as an insulator coupling portion and which can be tightened to an insulator neck portion, A plate-like body connected to the ring as the binding portion and joining the central portion of the spiral wrapping device; and a plate-like portion extending toward the front side of the binding portion as the electric wire receiving portion. What is done is also used.

[0008]

Since the electric wire intermediate support of the present invention has the above-described structure, in order to intermediately support the overhead distribution line on the insulator with the electric wire intermediate support of the present invention, first, the electric wire intermediate support is connected to the intermediate portion of the spiral winding tool. Fixing the wire intermediate support to the insulator by, for example, elastically fitting the insulator connecting portion of the holding tool to the neck of the insulator, or the insulator connecting portion formed at the intermediate portion of the spiral winding tool Is fitted to the neck of the insulator, and the wire intermediate support is fixed to the insulator. Next, grasp and lift the wire,
The wire is held by the wire receiving portion of the holder, and the wire is temporarily held on the neck of the insulator. Thereafter, the spirally wound bodies at both ends of the spirally wound device are wound around the temporarily held electric wire, whereby the electric wire is supported by the spirally wound device (permanently held).

That is, according to the wire middle support of the present invention, as described above, the spiral body of the spiral wrapping tool for fixing the wire middle support to the pin insulator and temporarily holding the wire on the neck of the insulator is provided. The three operations of winding around the temporarily held electric wire and supporting the electric wire on the insulator can be sequentially performed step by step.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below with reference to the drawings of the embodiments. FIG. 1 is a top view of a first embodiment of an intermediate wire support of the present invention, FIG. 2 is a front view thereof, and FIG. 3 is a right side view thereof. FIG. 4 is a top view of the holder in the first embodiment. FIGS. 5 and 6 are a top view and a front view, respectively, showing a state in which the wire intermediate support of the first embodiment is fixed to the neck of the pin insulator.

In FIG. 1, reference numeral 1 denotes a spiral wrapping tool made of a tough elastic metal wire and usually covered with a plastic such as polyethylene. The intermediate portion 2 of the wrapping tool 1 is formed in a U-shape so as to be able to engage with the neck K of the pin insulator P. On both sides of the intermediate part 2, a spiral body 3 wound around the electric wire W to be supported (FIG. 3) is formed, the inner diameter of the spiral is slightly smaller than the outer diameter of the electric wire W to be supported, the spiral pitch is relatively long, and the spiral pitch is long. It is formed in a spiral.

A cap 4 is provided on the end of the spiral body so that the end does not damage the coating surface of the electric wire W. This spiral wrapping device 1 is the same as the conventional one,
The shape of the intermediate portion 2 is also changed to a U-shape, and its legs are bent inward so that it can be elastically fitted and fixed to the neck of the insulator in the same manner as in the holder described below. May be formed.

Reference numeral 5 denotes a holder which is a feature of the electric wire intermediate support of the present invention. The holder 5 is made of an elastic metal wire coated with a plastic such as polyethylene as in the case of the spiral wrapping tool 1, and has a hook portion 6 bent in a loop shape. And an arcuate portion 71 having an inner diameter substantially conforming to the outer periphery of the neck portion K of the pin insulator P, and a narrowed portion 72 bent inward so as to be smaller and smaller than the outer diameter of the neck portion K of the insulator. Insulator connection part 7 formed in an Ω shape so that it can be inserted into the neck part from the side and elastically fitted and fixed, and an electric wire W to be supported formed on the tip end side of the insulation connection part. And an electric wire receiving portion 8 which can temporarily hold the insulator on the neck of the insulator.

Numeral 9 denotes a holding piece for forming the electric wire receiving portion 8, as shown in FIGS. 2 and 3, which protrudes upward from the surface of the hook 6 and the insulator connecting portion 7. Reference numeral 10 denotes a cap which is provided so that the end of the holder 5 does not damage the electric wire, similarly to the cap 4.

The holder 5 and the spiral wrapping device 1 are overlapped with each other, and the U-shaped intermediate portion 2 of the spiral wrapping device 1 is provided.
And the insulator connecting portion 7 of the holder 5 are connected to each other by a connecting portion 11. The binding portion 11 includes a binding portion (not shown) made of a binding yarn such as a polyamide yarn and the heat-shrinkable tube 1.
2 is formed. In this case, it is desirable to provide a binding groove in advance in the binding portion so that the binding yarn does not rise in the binding portion.
Numeral 3 indicates such a binding groove.

In the figure, the two are overlapped so that the spiral wrapping tool 1 is located above the holding tool 5.
There is no problem even if they are overlapped so that they are on the upper side. In addition to the above-mentioned binding and the heat shrinkable tube, the holding device 5 and the spiral wrapping device 1 may be bonded by, for example, only the heat shrinkable tube, the adhesive, or the plastic mold. The binding may be performed by other appropriate means such as binding.

In the electric wire intermediate support of the first embodiment described above, the tool or manipulator at the tip of the operating stick for the hot stick method grips the hook 6 and wraps the insulator coupling portion 7 and the spiral of the holder 5. The intermediate portion 2 of the tool 1 is inserted into the neck portion K of the pin insulator P from the side, and the insulator connecting portion 7 is elastically fitted and fixed to the neck portion K as shown in FIGS. Thereafter, as described above, the electric wire to be supported is placed on the electric wire receiving portion 8 and the electric wire is temporarily held on the neck of the insulator, and then the spiral body 3 of the spiral wrapping tool 1 is wound around the electric wire, and the electric wire is wound. To support. Since each operation can be performed in a stepwise manner in this way, even in the case of the hot stick construction method, it is possible to relatively easily perform the construction for one operator to intermediately support the electric wire on the pin insulator.

FIGS. 7 to 10 are top views illustrating the second to fifth embodiments of the present invention. The same reference numerals as those in FIGS. 1 to 6 indicate the same parts. The second embodiment shown in FIG. 7 is different from the first embodiment in that the holding tool 5 does not have a hook portion, and the connecting portion 11 between the holding tool 5 and the spiral wrapping tool 1 extends over both sides of the U-shape of the intermediate portion 2. Further, unlike the first embodiment, the insulator coupling portion 7 is formed bilaterally symmetrically over both sides of the Ω shape.
Other than the above, it is the same as the first embodiment. However, in the second embodiment, since the binding portion is formed symmetrically, instead of the spiral wrapping tool having the U-shaped intermediate portion, two right and left spiral bodies are attached to the binding portion. Thus, a spiral wrapping tool can be formed, and there is a feature that it can be manufactured at low cost.

In the third embodiment shown in FIG.
Unlike the first and second embodiments, it is formed with only one leg. Therefore, the connection with the insulator by the insulator connecting portion 7 is also performed in cooperation with one side 21 of the U-shaped intermediate portion 2 of the spiral wrapping tool 1. The temporary holding of the electric wire is also performed with only one leg. In the case of a small-sized and lightweight electric wire, a simplified electric wire intermediate support can be used.

In the fourth embodiment shown in FIG. 9, the holder 5 is not formed by an elastic metal wire as in the first to third embodiments, but is formed by a metal fitting.
The insulator connecting portion 7 of the holder 5 is formed so that it can be attached to and detached from the neck of the insulator by tightening and loosening a bolt 13 using an impact wrench. Also, as in the first to third embodiments, the insulator is not attached to the neck portion from the side as in the first to third embodiments. And insert it vertically through the head. The intermediate portion 2 of the spiral wrapping tool 1 has a linear shape and is bound at the boundary between the support 5, the insulator coupling portion 7, and the wire receiving portion 8.

In the fifth embodiment shown in FIG. 10, unlike the first to fourth embodiments, the Ω-shaped intermediate portion 2 of the spiral winding tool 1 is elastically fitted to the neck of the insulator. It is fixed. The U-shaped portion 14 of the holder 5 only surrounds the neck of the insulator, and is only connected to the spiral wrapping device 1 by the connecting portion 11 and does not contribute to the connection with the insulator. An electric wire receiving portion 8 and a holding piece 9 are formed on the distal end side of the U-shaped portion 14 of the holder 5, and in this embodiment, the holder 5 has only a function of temporarily holding an electric wire to be supported. .

While various embodiments of the electric wire intermediate support of the present invention have been described above, the embodiment can be modified in various ways other than the above description, and in particular, concrete examples of the insulator coupling portion of the holder 5 are provided. In addition to the above, various modifications such as a method of forming with two metal plates and opening and closing with a spring are possible.

[0023]

According to the present invention as described above, when performing the work of supporting the intermediate portion of the wire with the insulator, fixing the wire intermediate support to the insulator, temporarily holding the wire by the wire receiving portion, and temporarily holding the wire. Since the operations of winding the spiral body of the spiral wrapping tool around the held electric wire and supporting the electric wire can be sequentially performed stepwise, it can be relatively easily constructed even by the hot stick method, and Worker 1
It can be constructed relatively easily by humans.

[Brief description of the drawings]

FIG. 1 is a top view of a first embodiment of a wire intermediate support of the present invention.

FIG. 2 is a front view of the first embodiment.

FIG. 3 is a right side view of the first embodiment.

FIG. 4 is a top view of the holder in the first embodiment.

FIG. 5 is a top view showing a state in which the wire intermediate support of the first embodiment is fixed to the neck of the pin insulator.

FIG. 6 is a front view showing the above state.

FIG. 7 is a top view illustrating a second embodiment of the wire intermediate support of the present invention.

FIG. 8 is a top view illustrating a third embodiment.

FIG. 9 is a top view illustrating a fourth embodiment.

FIG. 10 is a top view illustrating a fifth embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Spiral winding tool 2 Intermediate part 3 Helical body 5 Holder 7 Insulator coupling part 8 Electric wire receiving part 9 Holding piece

Claims (5)

(57) [Claims] 1. A spiral wrapping device of an elastic metal wire for supporting an electric wire by providing a helical wire on both sides of a central portion and supporting the electric wire, an insulator connecting portion to be connected to the insulator, and a front end of the connecting portion. And a wire receiving portion for temporarily holding the wire to be supported, and holding the wire by projecting the wire receiving portion of the holding tool substantially in the horizontal direction with respect to the direction of the spiral wire. And a binding part for binding the central part of the spiral winding tool, wherein the holder is made of an elastic metal wire, and an electric wire receiving part is arranged on a free end side of the elastic metal wire, The insulator connecting portion of the holder has an arcuate portion in which the elastic metal wire can be fitted into the insulator neck portion, and is bent inwardly from the insulator neck portion following the arcuate portion to be elastically fitted and fixed to the neck portion. And a narrowing portion to be formed. 2. A helical wrapping device for an elastic metal wire, comprising: an insulator coupling portion provided at a central portion to be coupled to an insulator; and a helical wire supporting the electric wire by being wound around the electric wire on both sides of the central portion. A holder provided with an electric wire receiving portion for temporarily holding an electric wire to be supported, and an electric wire receiving portion of the holder protruding substantially in a lateral direction with respect to the direction of the helical wire to form the holder and the spiral. A binding portion for binding the insulator coupling portion at the center of the wrapping tool,
The elastic metal wire is bent inwardly from an arcuate portion that can be fitted into the insulator neck portion and an insulator neck portion following the arcuate portion, and the elastic wire is elastically attached to the neck portion. And a narrowing portion to be fitted and fixed to the elastic member. The holder is made of an elastic metal wire, and an electric wire receiving portion is arranged on a free end side of the elastic metal wire. Intermediate wire support. 3. The electric wire intermediate support according to claim 1, wherein the binding portion is a heat-shrinkable tube that surrounds and fixes the spiral wrapping tool and the holder. 4. The binding portion comprises the wrapped binding yarn, and a heat-shrinkable tube that surrounds and fixes the spiral wrapping device and the holder from above the wrapped binding yarn. 3. The electric wire intermediate support according to 1 or 2. 5. A spiral wrapping device of an elastic metal wire for supporting an electric wire by providing a helical wire on both sides of a central portion and supporting the electric wire, an insulator connecting portion to be connected to the insulator, and a front end of the connecting portion. And a wire receiving portion for temporarily holding the wire to be supported, and holding the wire by projecting the wire receiving portion of the holding tool substantially in the horizontal direction with respect to the direction of the spiral wire. A ring which can be fastened to the insulator neck by bolt-opening as the insulator coupling part, and A plate-like body connected to the ring as the binding portion and joining the central portion of the spiral wrapping device; and a plate-like portion extending toward the front side of the binding portion as the electric wire receiving portion. An intermediate wire support, characterized in that: