KR20160147402A

KR20160147402A - Cross arm having insulation performance

Info

Publication number: KR20160147402A
Application number: KR1020150084096A
Authority: KR
Inventors: 박종태
Original assignee: 제룡산업 주식회사
Priority date: 2015-06-15
Filing date: 2015-06-15
Publication date: 2016-12-23

Abstract

[0001] The present invention relates to an insulating sheath which can apply a wire without an expensive insulator by coating the surface of a hollow metal sheath used for installing electric wires on a pole, with an insulating tube.

Description

{CROSS ARM HAVING INSULATION PERFORMANCE}

The present invention relates to a wire netting which is light in weight in the field of distribution and can be electrically insulated and has an insulating performance which does not require addition of expensive insulators.

When we look at the process of power supply to each customer in everyday life where electricity can not be imagined, the electric power is transferred from the power plant to the substation and after several stages of transforming process, the electric pole transformer To the customer.

It is necessary to construct a structure for supporting the power line according to the magnitude of the power transmitted during the power transmission and distribution. For example, in a 765kV transmission line, a power tower is used to connect power lines using steel towers, and a power line for power transmission to a distribution or general customer is connected to each other using a telephone pole.

On the other hand, usually three or four cables are installed at regular intervals on a telephone pole. In order to prevent accidents such as short-circuiting, cables should be installed so that tension can be maintained so that they do not touch each other. In addition, an electric wire is installed on the upper part of the telephone pole, which serves to keep each cable at a constant interval.

In general, insulators with insulated properties are installed in the wire to withstand the tension of the cable and to maintain the gap. However, insulators are one of the expensive parts because they require insulation, durability and mechanical strength, and they are expensive materials because they are made of ceramics.

As a conventional technique for overcoming such a problem, there have been proposed a plurality of wires for connecting electric wires, which are installed on a telephone pole without insulators, including insulating properties.

For example, Japanese Patent Application Laid-Open No. 10-1498542 (Registration Date: Feb. 26, 2015) relates to an insulated wire which can adjust the length of the body of the wire and easily install or extend the wire.

As another example, Japanese Unexamined Patent Application Publication No. 10-2009-0091579 (published on Aug. 28, 2009) discloses a lightweight, intramuscular, homogeneous, high strength and electrically insulating glass fiber material Reinforced plastic brass.

Patent Registration No. 10-1498542 (Registration date: February 26, 2015) Patent Publication No. 10-2009-0091579 (Published date: Aug. 28, 2009)

SUMMARY OF THE INVENTION The present invention is directed to provide a wire rod having improved insulation performance by improving the wire rod of the prior art.

In addition, the present invention provides a fastener having an insulation property by which a clamp is provided on a through-hole to connect a wire without an insulator.

According to an aspect of the present invention, there is provided an electrode assembly comprising: a metal tube having a hollow shape; And an insulating heat-shrinkable tube surrounding the metal tube. The insulating heat-shrinkable tube is bonded to the surface of the metal tube by heating the metal tube while the metal tube is being wrapped with the heat-shrinkable tube.

Preferably, in the present invention, the surface of the metal tube is coated with an insulating material.

Preferably, in the present invention, both end portions of the metal tube are open, and the heat-shrinkable tube is formed longer than the metal tube so that the ends of the heat-shrinkable tube are curled inwardly at both ends of the metal tube during the heat shrinking process, .

Preferably, in the present invention, a plurality of accessory through holes are formed in the precious metal, and a first insulating bushing is inserted into the through hole.

Preferably, in the present invention, both end portions of the precious metal are closed with a second insulating bushing.

Preferably, in the present invention, the wire is fixed to the wire through a clamp.

Since the wire having insulation performance according to the present invention includes insulation performance, it can prevent electric accidents such as electric shocks such as short-circuit, short-circuit, and electric shock during work.

The present invention is added to a wire having insulation performance, and can be connected to an electric wire by additionally providing a clamp without an insulator.

1 is a view showing a metal tube and an insulating heat-shrinkable tube according to the present invention,
2 is a view showing an insulating heat-shrinkable tube according to the present invention bonded to a metal tube,
Fig. 3 is a view showing a clamp provided on a wire having insulation performance according to the present invention. Fig.

The specific structure or functional description presented in the embodiment of the present invention is merely illustrative for the purpose of illustrating an embodiment according to the concept of the present invention, and embodiments according to the concept of the present invention can be implemented in various forms. And should not be construed as limited to the embodiments described herein, but should be understood to include all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Meanwhile, in the present invention, the terms first and / or second etc. may be used to describe various components, but the components are not limited to the terms. The terms may be referred to as a second element only for the purpose of distinguishing one element from another, for example, to the extent that it does not depart from the scope of the invention in accordance with the concept of the present invention, Similarly, the second component may also be referred to as the first component.

Whenever an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, but it should be understood that other elements may be present in between something to do. On the other hand, when it is mentioned that an element is "directly connected" or "directly contacted" to another element, it should be understood that there are no other elements in between. Other expressions for describing the relationship between components, such as "between" and "between" or "adjacent to" and "directly adjacent to" should also be interpreted.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. It will be further understood that the terms " comprises ", or "having ", and the like in the specification are intended to specify the presence of stated features, integers, But do not preclude the presence or addition of steps, operations, elements, parts, or combinations thereof.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Referring to FIG. 1, the metal tube and the insulative heat-shrinkable tube according to the present invention are shown, respectively, wherein the metal tube is a metal body having a hollow columnar shape, both ends are open and at least one surface includes a plurality of through holes .

The metal tube is previously coated with a separate insulating material such as alumina, silica, urethane or polyesters to improve corrosion resistance and durability, thereby prolonging the replacement period of parts due to corrosion or wear, It can also work favorably in poor areas. In addition, various electric accidents such as short circuit and electric shock can be prevented during electric work.

It is made of a material that can withstand various loads such as tensile load and wind load when it is connected to a cable from a telephone pole.

In an insulating heat-shrinkable tube, a resin having insulation property as one of the types of synthetic resin in the form of a hollow tube has a longer diameter than a metal tube, and a metal tube is inserted into the heat-shrinkable tube, .

The heat-shrinkable tube is insulative and any material may be used provided that the heat-shrinkable tube is adhered to the inner surface of the tube when the heat is applied.

Referring to FIG. 2, the insulated heat shrinkable tube according to the present invention is attached to a metal tube, and a metal tube is inserted into the heat shrinkable tube to shrink the heat shrinkable tube with a heat generator such as a dryer and adhere to the outer circumferential surface of the metal tube .

At this time, the heat-shrinkable tube is longer than both ends of the metal tube so that the heat-shrinkable tube is curled at both open ends of the metal tube during heat shrinkage. The through-hole of the metal tube covered with the heat-shrinkable tube is completely clipped and then cut out using the same shape of the through-hole as that of the through-hole.

On the other hand, both open ends of the metal tube are covered with a second insulated bushing which is insulated, and it is possible to prevent various problems such as insects or the like penetrating inside the metal tube to cause corrosion. In addition, various connection ports such as a hexagonal bolt or a cotter pin having an insulator spacer assembled therein can be insulated by inserting a first insulated bushing in advance before fastening to the through hole, and then fastening the connection port.

Referring to FIG. 3, a clamp is mounted on a wire having insulation performance according to the present invention, in which a clamp is provided on a through-hole of a metal tube coated on a heat-shrinkable tube, and wires are connected.

After the fitting of the clamps is aligned with the through-hole in which the insulating bushing is inserted, one of the connecting holes is fastened by tightening a ball i chain. Generally, it is possible to directly connect the wires to the clamps installed on the wire, as opposed to connecting the wire to the insulator installed in the wire, thus saving the material cost and the construction cost for the insulator. In addition, the time required for construction can be significantly shortened in connecting the wires.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventions. It will be apparent to those of ordinary skill in the art.

100: heat shrink tube 200: metal tube
210: through hole 211: first insulating bushing
212: connector 220: second insulating bushing
300: Binder 310: Clamp
311: electric wire 312: ball eye chain

Claims

A hollow metal tube;
And an insulating heat-shrinkable tube surrounding the metal tube,
And an insulating heat-shrinkable tube is adhered to the surface of the metal tube by heating the metal tube while the metal tube is wrapped with the heat-shrinkable tube.

Wherein the surface of the metal tube is coated with an insulating material.

The heat-shrinkable tube according to claim 1 or 2, wherein both ends of the metal tube are open, and the heat-shrinkable tube is formed longer than the metal tube so that the heat-shrinkable tube is curled inward at both ends of the metal tube during heat shrinking, Wherein the insulating layer is formed on the substrate.

4. The wire of claim 3, wherein a plurality of accessory through-holes are formed in the through-hole, and a first insulating bushing is inserted into the through-hole.

4. The bimetal according to claim 3, wherein both ends of the precious metal are closed by a second insulating bushing.

The insulator wire of claim 3, wherein the wire is fixed to the wire through a clamp.