JP2001224124A - Jumper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent jumper support devices for stringing jumper wires from entering the clearances of tension insulator assemblies. SOLUTION: This jumper connects transmission lines, strung through the tension insulator assemblies provided on both sides of an arm of a transmission steel tower respectively. In the jumper whose jumper wires are strung and supported at their ends by jumper supporting devices provided on the tip sides of those tension insulator assemblies respectively, the jumper supporting devices bend in the directions for the tip part sides of the tension insulator assemblies, so as to separate from the tension insulator assemblies so that the tip part sides may ensure insulation distance of the tension insulator assemblies.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jumper device and, more particularly, to a jumper device in which a jumper supporting device for supporting a jumper wire does not enter a clearance which is an insulation distance of a tension insulator.

[0002]

2. Description of the Related Art A conventional jumper device is provided with jumper supporting devices on tension insulators provided on the left and right sides of an arm of a power transmission tower (hereinafter referred to as a "pylon"), respectively.
A rigid horizontal member made of H-shaped steel, pipe, or the like is provided at the lower end of the jumper supporting device, and a jumper wire is attached to the horizontal member (for example, see Japanese Utility Model Application Laid-Open No.
-51725).

[0003] In addition, the above-mentioned jumper device using a horizontal member requires a large-scale device.
There has also been proposed a jumper device in which a jumper wire is directly supported and stretched below the two jumper support devices.

[0004]

However, in the above-mentioned conventional jumper device in which the jumper wire is directly extended by the jumper supporting device, the jumper wire is extended by the jumper supporting device such that the distance from the arm is minimized. In addition, there is a possibility that the tension insulator side of the jumper supporting device may enter the insulation distance of the tension insulator, ie, the clearance. More specifically, referring to FIG. 2, when the jumper supporting device 2 'supports the jumper line J so that the jumper depth of the jumper line J becomes the minimum necessary, the clearance of the clearer clearance C increases as the jumper supporting device 2' becomes closer to the horizontal. There was a risk of getting inside. If the jumper support device 2 'enters the clearance C, the insulation function of the tension insulator device is impaired.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned drawbacks, and an object of the present invention is to provide a jumper device in which a jumper supporting device is not likely to enter a clearance of the tension insulator. is there.

[0006]

In order to achieve the above object, a jumper device according to the present invention comprises a power transmission line stretched through tension insulators provided on both right and left sides of a tower arm. A jumper device to be connected, wherein one end of a jumper wire of the jumper device is supported by being stretched and supported by a jumper support device provided at one end of each of the tension insulator devices. Is characterized in that the distal end side of the tension insulator is bent away from the tension insulator so that an insulation distance of the tension insulator can be secured.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram of a jumper device according to one embodiment, in which a right portion of an arm A provided on a steel tower (not shown) is omitted. Note that the omitted parts are similarly configured.

The arm A is provided with a tension insulator device 1, and a transmission line L is stretched at a tip portion (an end portion opposite to the arm A) of the tension insulator device 1. .

The jumper wire J is formed by extending the power transmission line L, and is provided below the arm A. The jumper wire J is supported by the jumper support device 2 and is stretched so as to be substantially horizontal.

One end of the jumper supporting device 2 is rotatably supported on a tip end of the tension-resistant device 1 via a mounting bracket 3. Further, a jumper wire J is configured to be rotatably attached to the other end of the jumper support device 2 via a mounting bracket 4. The jumper support device 2 is formed to bend in a direction far away from the tension insulator device 1. That is, the jumper supporting device 2 is formed to be largely bent so as not to enter the clearance C which is the insulation distance of the tension insulator device 1.

As described above, when the jumper supporting device 2 is far away from the tension insulator 1, the insulation performance of the tension insulator 1 can be maintained as specified. Further, even if the jumper wire J swings due to the wind or the like, the jumper supporting device 2 does not have the possibility of contact with the tension-proof device 1.

Further, since the jumper wire J is stretched and maintained substantially horizontally by the pair of jumper support devices 2 and 2 (the right jumper support device 2 is omitted), the depth of the jumper wire J is maintained. Therefore, the distance between the upper and lower arms can be reduced, and the tower itself can be reduced in size.

In the above example, the jumper wire J is constituted by one conductor, but when the transmission line L is constituted by multiple conductors, it is constituted by multiple conductors. In the above example, the jumper wire J and the transmission line L are integrated, but when the transmission line L is supported by a compression clamp or the like, the jumper line J
And the transmission line L are separate. Furthermore, in the above example, the jumper device is configured by the transmission line L, but may be a case in which a rigid horizontal member is used.

[0014]

In the jumper device according to the present invention, the jumper supporting device is disposed so as to be far away from the tension insulator so that the distal end of the insulator can secure the insulation distance of the tension insulator. Because it is bent,
The jumper support device does not enter the clearance of the tension insulator, and the jumper can be supported even if the jumper wire is swung by the wind or the like when the extension from the arm is minimized or the jumper wire swings due to wind, etc. The device can be effectively prevented from contacting the tension insulator device.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a jumper device according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a relationship between a jumper supporting device and a clearance.

[Explanation of symbols]

 A Arm L Transmission line J Jumper wire 1 Tensile insulator 2 Jumper support C Clearance

Claims (1)

[Claims] 1. A jumper device for connecting a transmission line stretched through tension insulators provided on each of the left and right sides of an arm of a transmission line tower, wherein one end of a jumper wire of the jumper device has one end. In a jumper device which is stretched and supported by a jumper support device provided on each of the distal ends of the tension insulators, the jumper support device may be configured such that a distal end side of the tension insulator has insulation of the tension insulator. A jumper device which is bent in a direction away from the tension insulator device so as to secure a distance.