JP2006216309A - Insulating sleeve cover and its mounting method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an insulating sleeve cover easily mountable to a linear compressively connected spot, excellent in drainage, and effective in preserving a wire for a long time. <P>SOLUTION: This sleeve cover is to cover the linear compressively connected spot where parted wires are connected each other by a sleeve, and a cover body is composed of two parts 2, 3 to divide the sleeve to one on the parted wire L side and the other on the parted wire R side, and the respective parts 2, 3 are detachably formed by connecting means 4, 5, 8, 9. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an insulating sleeve cover used for an insulation processing operation of a linear compression connecting portion of a tensioned wire in a high-voltage overhead distribution line, and a method for attaching the insulating sleeve cover.

  In general, insulation treatment work for compression connection points (hereinafter referred to as connection points) such as straight lines or branches is generally performed by first lifting the bucket on which the worker is placed by an aerial work vehicle and then as an indirect process called a hot stick. The hot wire tool is operated to perform a disconnection operation of a connection scheduled portion of the electric wire held by the electric wire separator 26 (hereinafter, one of the divided electric wires is referred to as the fixed-side electric wire L with the electric wire separator 26 as a reference, and the other Is referred to as a telescopic side wire R). Then, on the fixed side of each divided electric wire, first, as shown in FIG. 6A, an insulating sleeve cover (hereinafter referred to as a cover) 21 made of resin or rubber is operated while operating the hot stick 22. After the cover 21 is completely covered, the cover 21 is completely covered with the fixed-side electric wire L, and at the stage where the front end portion of the fixed-side electric wire L is exposed at the rear end side of the cover 21, the electric wire separator 26 The extension-side electric wire R is drawn toward the fixed-side electric wire L, the tip portions of the electric wires L and R are inserted into the both ends of the metal sleeve 23, respectively, and compressed to connect the electric wires L and R.

Next, as shown in FIG. 6 (b), the cover 21 brought close to the fixed-side electric wire L side is directed to the connection portion of the electric wires L and R where the sleeve 23 is exposed while operating the hot stick 22. After the connection portion is covered with the cover 21, as shown in FIG. 6 (C), the hot stick 22 having the winding unit 24 at the tip is used to adhere to both ends of the cover 21. The tape 25 was wound about two and a half revolutions, and the cover 21 was positioned in a state where the cover 21 was covered to complete the insulation process.
JP 2001-57248 A (first page, FIG. 1) JP 2000-278854 A (first page, FIG. 1)

  However, in the conventional insulation treatment work, the cover longer than the length of the sleeve had to be moved along the wire while being covered with the wire. It is very troublesome and causes a deterioration in work efficiency. In addition, even after the cover is moved to the connection location, the adhesive tape is wound around both ends of the cover by operating the hot stick with the winding unit attached to the tip in the same way, and positioning it on the wire In addition to the cover moving operation described above, the operation is very troublesome, and there is a problem in that the working efficiency is further deteriorated. In addition, since the cover used to cover the connection portion is an integral tube, for example, when rainwater or the like is submerged in the cover, drainage is not performed and the cover continues to accumulate in the cover. There was also a problem that the moisture that corroded the wires and sleeves in a short period of time.

  The present invention has been invented in view of the above problems, an insulating sleeve cover that can be easily attached to a linear compression connection location, has good drainage, and also has a long-term maintenance effect on electric wires, and its It is to provide an attachment method.

  The invention according to claim 1 of the present invention is an insulating sleeve cover that covers a connection portion in which each divided electric wire is connected by a sleeve, and the cover main body is divided into one electric wire side and the other electric wire side. In addition, each part is composed of two parts, and each part is detachably formed by a coupling means. The method for attaching the insulating sleeve cover includes the steps of covering each of the two divided parts on each of the electric wires divided into a fixed side and a telescopic side based on the electric wire separator as in the invention of claim 4. And a step of coupling the electric wires in the divided state, and a step of gradually approaching the two parts along the combined electric wires and coupling them.

  The connection location is a concept including all the divided wires and sleeves. The shape of each part can be attached to each divided electric wire, and in the state where each part is joined, it is covered so that it will not be rained directly in addition to insulation at the connection point of the electric wire For example, a cylindrical shape, a sleeve shape, etc. are mentioned. Further, the coupling means may be any means as long as each part can be easily attached and detached by operation of a hot stick. For example, a fitting tube is provided on a part on the side of one of the divided wires, and the part is on the side of the other wire. The part is provided with a fitting tube that enters and fits into the fitting tube, or one part is provided with a locking claw, and the other part is at a position where the locking claw is caught. It may have a configuration in which a receiving hole is provided and each part is fitted into a snap type, a part in which each part is screwed together, or a combination of the above examples. Furthermore, the material of each part is not limited to insulation, but may be any material that has resistance to the extent that it is not damaged by bird's claws or wings. For example, resins such as polyethylene resin or reinforced rubber may be used. Can be mentioned.

  Since the cover body is divided into two parts that can be attached and detached by the coupling means, each part is divided by the operation of the hot stick in the previous stage of the sleeve mounting process between the divided electric wires. After moving in advance to the side of one electric wire and the side of the other electric wire, and after connecting the sleeve between the electric wires, the parts are drawn together to cover the connection points between the electric wires. Can do.

  In the invention according to the second aspect of the present invention, each of the parts includes a rib on all or a part of the contact surface side with the connection part. Therefore, after attaching the cover to the connection part, for example, an electric wire When the cover is about to move unexpectedly along the electric wire, the protruding tip portion of each rib comes into contact with the coated surface of the electric wire or the unevenness of the sleeve, thereby suppressing further movement.

  Here, the rib means all of the protrusions provided on the contact surface with the connection place in the part. Further, the shape and number of the ribs are not particularly limited.

  In the invention according to claim 3 of the present invention, since each of the parts is provided with a drainage means, in the unlikely event that rainwater or the like is submerged in the cover after the cover is attached to the joint location. Even in such a case, water droplets accumulate along the inner peripheral surface of the cover and accumulate on the bottom side, and further flow out of the cover from a portion provided with drainage means, so that water does not accumulate in the cover for a long time.

  Any drainage means may be used as long as it can drain the water immersed in the cover to the outside. For example, a drain outlet that communicates the inside and outside of each part is provided on the bottom side of each part, or the connection of each part is possible. You may couple | bond together in the state which loosened the part so that the clearance gap might be opened.

  According to the present invention, since the interval for moving the cover by the operation of the hot stick can be shortened in the insulation processing work, the work efficiency is dramatically improved, and further, the insulation processing work is limited on the bucket of the aerial work vehicle. Since the work is performed in a limited space, the reduction in the movement interval of the cover can reduce the movement of the worker's body, which can contribute to the improvement of work safety.

  According to the invention described in claim 2 of the present invention, it is possible to reliably maintain the covering state of the connection portion by the cover without winding the adhesive tape around the both ends of the cover by operating a hot stick as in the prior art. , Work efficiency can be dramatically improved.

  According to the invention described in claim 3 of the present invention, even if rain water or the like is inundated into the cover, reliable drainage is performed. Make it possible.

Next, an embodiment of the insulating sleeve cover of the present invention will be described below.
As shown in FIGS. 1 and 2, the insulating sleeve cover is composed of two resin-made cylindrical parts 2 and 3 that are divided into left and right via coupling means 4 and 5, and is first on the fixed-side electric wire L side. The fitting tube 5 of the cylindrical part 2 is formed with a bulge in diameter as compared to the distant side portion. Further, as shown in FIG. Each is provided with a receiving hole 9 penetrating the cylindrical wall. On the other hand, the fitting cylinder 4 of the cylindrical part 3 on the extension side electric wire R side has a cylinder diameter slightly smaller than the inner diameter of the fitting cylinder 5 of the cylindrical part 2 on the fixed side electric wire L side, Further, on the outer peripheral surface side of the fitting cylinder 4, locking claws 8 are provided at corresponding positions that can be engaged with the receiving holes 9. When the cylindrical parts 2 and 3 are joined, the locking claws 8 and 8 are snapped into the receiving holes 9 and 9 so that the cylindrical wall of the fitting cylinder 5 and the fitting cylinder 4 overlap. The parts are joined with a slight gap S between them.
When removing each cylindrical part 2, 3, either one of the cylindrical parts 2, 3 is slightly turned by operating the hot stick 12, and the engagement state between the locking claw 8 and the receiving hole 9 is changed. After releasing, it can carry out easily by pulling apart each cylindrical part 2 and 3 (refer Fig.5 (a)).

  In addition, as shown in FIG. 4, the cover already attached to the connection place of the wires L and R is fixed to the fixed side L and the expansion and contraction side of the wires L and R as the wires L and R are bent by the influence of wind and the like. There is a case where it is shifted in each direction of R. As a countermeasure, ribs 6 projecting from the inner peripheral surface of the cylinder toward the center of the cylinder are provided at intervals of 60 ° at the end portions on the separation side of the coupling means 4 and 5 of the cylindrical parts 2 and 3. In six places. Furthermore, the edge of each cylindrical part 2 and 3 is provided with cuts 16 in a state parallel to the ribs 6 at six locations between the ribs 6, and the portions divided by the cuts 16 are A leaf spring-like pressing piece 14 is formed by bending inwardly. And the front-end | tip part of each said pressing piece 14 adjoins so that it may squeeze to the coating surface side of the electric wires L and R, and the clearance gap part with the fixed side L and the expansion-contraction side R of this cover after attachment in these electric wires L and R Is made as narrow as possible to prevent bird damage and infiltration of garbage.

  The receiving hole 9 is also used as a drainage means. More specifically, there is a slight gap between the cylindrical walls of the fitting cylinders 4 and the fitting cylinders 5 of the cylindrical parts 2 and 3, that is, between the outer circumferential surface of the fitting cylinder 4 and the inner circumferential surface of the fitting cylinder 5. The diameters of the fitting cylinder 4 and the fitting cylinder 5 are set so that a gap S is formed between the coupling parts 4 and 5 so that the coupling means 4 and 5 are loosened with each other when the cylindrical parts 2 and 3 are coupled. I have to. Therefore, even if rainwater is submerged in the cover, the rainwater that has flowed into the bottom of each cylindrical part 2, 3 is formed by the tapered portion of the locking claw 8 after passing through the gap S. It reaches the receiving hole 9 through the space between the fitting cylinder 5 and the cylinder wall, and finally the rainwater flows down from the receiving hole 9 to the outside of the cover.

  Although not shown in the drawings, if each cylindrical part 2 is formed so that the diameter of each cylindrical part 2 and 3 increases from the end on the separation side toward the coupling means 4 and 5 in the cylindrical wall of each cylindrical part 2 and 3, each cylindrical part 2. , 3 is provided with a slope of a downward gradient toward the coupling means 4, 5 at the bottom of the cylinder, thereby making it easy to collect rainwater toward the receiving hole 9.

Next, the process of actually attaching the book cover to the connection location will be described in order based on the drawings.
First, the electric wires L and R divided into the fixed side and the expansion / contraction side based on the electric wire separator 15 are gripped by the action portions on both ends of the electric wire separator 15. Next, as shown in FIG. 5A, the tubular parts 2 and 3 are moved to the electric wires L and R by operating the hot stick 12 to the electric wires L and R on the fixed side and the telescopic side of the electric wire separator 15. The tip is gradually covered until it is exposed from the opening of the fitting tube 4 and the fitting tube 5. Subsequently, the sleeve 13 is compressed with the one end of the sleeve 13 sandwiched between the fixed-side electric wire L, and the sleeve 13 and the tips of the electric wires L and R are attached in a state where they cannot be detached.

  Then, as shown in FIG. 5 (b), the cylindrical parts 2 and 3 brought close to the fixed-side electric wire L and the telescopic-side electric wire R are positioned so as to cover the entire sleeve 13 by operating the hot stick 12. Get close to. Furthermore, while fixing one cylindrical part 2 with the hot stick 12, by operating another hot stick 12 and pushing the other cylindrical part 3 into the fixed cylindrical part 2 side, The latching claws 8 and the receiving holes 9 in the coupling means 4 and 5 of the cylindrical parts 2 and 3 are snapped into each other, and the cylindrical parts 2 and 3 are coupled to each other to insulate the connection portions 13, L, and R. The work is completed [see FIG. 5 (c)].

It is a side view which shows the use condition of the insulation sleeve cover by this invention. It is a longitudinal cross-sectional view of FIG. It is a longitudinal cross-sectional view which expands and shows A in FIG. FIG. 3 is an enlarged vertical sectional view taken along line BB in FIG. 2. It is explanatory drawing which shows the attachment process (insulation process operation | work) of the insulation sleeve cover by this invention. It is explanatory drawing which shows the attachment process (insulation process operation | work) of the conventional insulation sleeve cover.

Explanation of symbols

2, 3 Tubular parts (parts)
4 Insertion cylinder (joining means)
5 Fitting cylinder (joining means)
6 Ribs 8 Locking claws (coupling means)
9 Receiving holes (coupling means, drainage means)
13 Sleeve (connection point)
L Fixed side wire (connection location)
R Telescopic side wire (connection location)
S gap (drainage means)

Claims (4)

An insulating sleeve cover that covers a straight line in which each divided wire is connected with a sleeve or a compression connection point that branches off,
The cover body is composed of two parts (2, 3) that divide each of the divided electric wire (L) side and the other electric wire (R) side,
Each of the parts (2, 3) is detachably formed by coupling means (4, 5, 8, 9).   2. The insulation according to claim 1, wherein each of the parts (2, 3) is provided with a rib (6) on all or part of the contact surface side with the connection location (13, L, R). Sleeve cover.   The insulating sleeve cover according to claim 1 or 2, wherein each of the parts (2, 3) is provided with a drainage means (9, S). A step of covering each of the electric wires divided on the fixed side and the expansion and contraction side with respect to the electric wire separator, respectively, a step of covering each of the divided parts, a step of combining the electric wires in the divided state, and the combined electric wires A method of attaching an insulating sleeve cover, comprising: gradually approaching the two parts along a line and joining them together.