JPH06153368A - Support for overhead distribution line - Google Patents

Abstract

PURPOSE:To enhance work efficiency by arranging a plurality of insulators vertically on a part of a first arm metal inclining obliquely downward in a reverse steplike arrangement where the insulators are arranged closer to a pole from upper stage toward lower stage. CONSTITUTION:An arm metal 11 in an overhead distribution line support 10 has substantial V-shape with the lengths of upper and lower parts 11a, 11b being set at a ratio of 1:2, for example. The arm metal 11 is arranged in reverse triangular shape where the lower side part 11b stretches sideways at the upper end thereof and secured to a pole 1 at the lower end thereof. Tension insulators 25-27 are fixed to insulator supporting members 11d-11f provided on the lower side part 11b of the arm metal 11. Consequently, the tension insulators 25-27 are arranged so-called reverse stepwise where the insulators are arranged closer to the pole in the order of upper stage, middle stage, and lower stage. An arm metal 12 stretches horizontally below the arm metal 11 in same direction therewith and secured to the pole 1 in parallel with the upper side part 11a thus suspending a switch 30 horizontally.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support device for an overhead power distribution line.

[0002]

2. Description of the Related Art In the distribution work of a high-voltage overhead electric wire, there is a lot of live work. Conventionally, as shown in FIG. 1, a worker wears rubber gloves for electric use and goes up to a utility pole 1 to carry out the power distribution work directly. Alternatively, the worker goes up to the utility pole 1 and uses the hot stick to perform the power distribution work by an indirect live-line construction method. However, these direct hot wire construction methods, indirect live wire construction methods, etc. are always exposed to the risk of electric shock due to the fact that the operator is elevated to a high place and the power distribution work is performed manually, so that the worker is fatigued. Is extremely large. Further, there is a problem that the work efficiency is poor because a plurality of people work on the telephone pole 1.

Therefore, in recent years, as shown in FIG. 2, a boom 7 which is hydraulically operated and is capable of turning and expanding / contracting, a bucket 8 arranged at an upper end of the boom 7, and a robot (manipulator) arranged in the bucket 8 are provided. A construction method has been adopted in which an operator mounts a bucket 8 and operates a robot 9 to perform power distribution work by using an indirect construction vehicle (not shown) equipped with 9 or the like. Such a construction method can safely perform various kinds of work that are difficult by manual work, one worker can perform complicated work, and high work efficiency,
Moreover, since the worker is in the bucket 8, there is an advantage that the worker is not likely to fall.

[0004]

By the way, in the high-voltage overhead power distribution, as shown in FIG. 1, three arms (for example, tension insulators 3) are attached to each of the arms 2 horizontally fixed to the uppermost part of the electric pole 1. Three-phase) high-voltage electric wires 4 to 6 are supported, and these high-voltage electric wires 4 to 6 are arranged parallel to each other in a horizontal plane.
On the other hand, when the indirect construction vehicle stops at one side of the road to perform the work and the robot 9 performs the work, it is farthest from the work of the electric wire 4 closest to the road side (front side). When working on the electric wire 6, the two electric wires 4 and 5 on the front side
Since the arm of the robot 9 is extended from below, the moving distance becomes long, and not only the workability is poor, but also the other electric wires 4, 5 and the like may be touched during the work.

Further, when a switch or a transformer is installed on the utility pole 1, a large number of high-voltage down conductors (none of which are shown) connecting the electric wires 4 to 6 and the switch or the transformer are pulled down. As a result, the electric wires are complicated, and it becomes difficult for the robot to work. Further, there is a possibility that the tool attached to the tool gripping portion of the arm of the robot 9 may be caught by these electric wires and fall off the arm.

The present invention has been made in view of the above points, and an object of the present invention is to provide a supporting device for an overhead power distribution line, which is designed to improve the workability of a power distribution work of an overhead wire by a robot.

[0007]

In order to achieve the above object, according to the present invention, there is provided a first arm member having a substantially V shape and having both ends fixed to an upper portion of a utility pole in a substantially inverted triangle. The first
A plurality of insulators, which are arranged at predetermined intervals in the vertical direction on the slanted portion inclined obliquely downward of the arm, and respectively support a plurality of electric wires, and one end of which is arranged below the first arm and the electric pole The second end that is fixed to and has the other end protruding substantially horizontally to support the device.
It is configured to include the armband. In addition, the armband may be formed in a substantially Z shape by integrally forming the first armband and the second armband.

[0008]

The plurality of insulators vertically arranged on the inclined portion of the first arm member that is inclined obliquely downward have a substantially inverted tiered shape in which the insulators gradually approach the pole side from the upper stage to the lower stage. And the high voltage electric wires are supported by the respective insulators. Also,
A device such as a switch or a transformer is supported on the second arm, and is connected from each high voltage wire by a high voltage down line. As a result, when performing the power distribution work using the robot, interference with other electric wires is reduced, and the work is facilitated.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the accompanying drawings. In FIGS. 3 and 4, the armor 11 of the overhead power distribution line supporting device 10 is substantially V-shaped, and the length ratio between the upper side portion (horizontal portion) 11a and the lower side portion (slope portion) 11b is, for example, It is set to about 1: 2, and holes 11c (only one side is shown in FIG. 5) are formed at each tip. Insulator support members 11d to 11f are attached to the lower side portion 11b substantially horizontally along the longitudinal direction, that is, at predetermined intervals in the vertical direction. The arm member 11 is formed in a rectangular tube shape from a metal member having corrosion resistance and rust resistance.

The arm 12 is rod-shaped and its length is set to be substantially the same as the upper side 11a of the arm 11.
As shown in FIG. 6, for example, two bolt holes 12a are formed at the base end along the longitudinal direction at predetermined intervals. The arm member 12 is also formed in a rectangular tube shape from a metal member having corrosion resistance and rust resistance, like the arm member 11. On the other hand, bands 15, 16 and 17 are attached to the upper part of the telephone pole 1 (FIG. 3). The band 15 is composed of two semicircular band pieces 15A and 15B as shown in FIG. 5, and both ends of each of the band pieces 15A and 15B are bent outward at a substantially right angle to form an ear portion. 15a, 15a, 15b and 15b.
In addition, supporting portions 15c, 15c for supporting the arm member 11 are extended in parallel outward in the radial direction at a predetermined interval in the central portion of the one band piece 15A. Support part 1
Each of 5c and 15c has its base end welded and fixed to the band piece 15A, and has holes 15d and 15d at substantially the center thereof.
The band 15 is formed of a metal member having corrosion resistance and rust resistance, like the armband 11.

In the band pieces 15A and 15B, the ear portions 15a, 15a and 15b and 15b at both ends are respectively provided with bolts 20,
20 and nuts 21 and 21 are connected to each other to form an annular shape, which is attached to the upper end of the electric pole 1 and supports 15c and 15c.
Is firmly tightened and fixed in a state of horizontally projecting from the electric pole 1 in a predetermined direction. Bands 16 and 17 are also configured similarly to band 15, and band 16 is band 15 of telephone pole 1.
The bands 17 are mounted and fixed at predetermined positions below the band 16 just below the bands 16 (FIG. 3). Band 1
7, holes 17d and 17d are formed in the support portions 17c and 17c so as to correspond to the holes 12a of the arm member 12 as shown in FIG.

As shown in FIG. 3, the armrest 11 has an upper side 11a,
Both ends of the lower side portion 11b are fixed to the belts 15 and 16, respectively. That is, the tip of the upper side portion 11a of the arm member 11 is fitted and inserted between the support portions 15c, 15c of the belt 15, and the holes 11c,
It is fixed by bolts 22 and nuts 23 penetrating 15d and 11c (FIG. 5). The tip of the lower side portion 11b of the armband 11 is also fixed to the belt 16 in the same manner as described above. In this state, the arm 11 is arranged in an inverted triangular shape with the upper end of the lower side (inclined part) 11b (the part connected to the upper side 11a) protruding laterally and the lower end fixed to the utility pole 1. .

Similarly, the arm 12 has a band 17 at the base end.
Of the holes 17d, 1c
It is fixed by a bolt 22 and a nut 23 which penetrate 2a and 17d (FIG. 6). The arm 12 extends horizontally below the arm 11 in the same direction as the arm 11, and the upper side 11
It is fixed to the telephone pole 1 in parallel with a. Then, tension insulators 25 to 27 are provided at one ends of the insulator support members 11d to 11f of the lower side portion 11b of the armor 11, and tension insulators 25 'to 27' are provided at the other ends thereof.
Are respectively installed, and the electric pole 1 is a double-pulling pole. Therefore, the tension insulators 25-27, 25'-27 'are
The upper, middle, and lower stages are sequentially arranged inward, that is, closer to the utility pole 1 side, in a so-called inverted tiered configuration. Then, one end of each of the high voltage electric wires 4 to 6 is fixedly supported by the tension insulators 25 to 27 on one side, and each end of the high voltage electric wires 4'to 6'is attached to each tension insulator 25 'to 27' on the other side. Each is fixedly supported. The telephone pole 1
Similar distribution line support devices are provided on both sides of the electric poles, and the other ends of the high-voltage electric wires 4 to 6 and 4'to 6'are similarly supported. In this way, the high voltage electric wires 4 to 6 and 4'to 6'are supported on the electric pole 1.

A switch 30, for example, is hung on the arm member 12 and supported horizontally, and each of the electric wires 4 to 6 and 4 '.
~ 6 'high pressure draw lines 31-33 and 31'-33'
Are respectively connected to the corresponding terminals of the switch 30. And each high voltage electric wire 4-6 and 4'-6 'are connected via the switch 30 concerned. Thereby, using the robot, the high voltage electric wires 4 to 6 and 4'to 6 ', the high voltage down conductor 31
-33, 31'-33 'or the switch 30 or the like, the work for performing the power distribution work is facilitated, it is not necessary to extend the arm too long, and interference with other electric wires is reduced during the work.

In the above embodiment, the armrest 11 and the armrest 12 are separately provided and separately fixed to the telephone pole 1, but the invention is not limited to this.
As shown in FIG. 7, a Z-shaped armor 13 is used, and the free end of the upper side portion 13a and the connecting portion of the inclined side portion 13b and the lower side portion 13c are fixed to the electric pole 1 via the bands 15 and 16, respectively. Lower part 1
A switch or the like may be suspended and supported by 3c, and when integrally formed in this way, the number of parts can be reduced and the assembling property can be improved.

In the above embodiment, the case where the switch is suspended and supported by the arm 12 has been described, but the invention is not limited to this, and other devices such as a transformer may be supported.

[0017]

As described above, according to the present invention, there are provided a first arm member having a substantially V shape, both ends of which are fixed to an upper portion of a utility pole in a substantially inverted triangle, and the first arm member. A plurality of insulators, which are arranged at predetermined intervals in the vertical direction on the inclined portion that is inclined obliquely downward, and which respectively support a plurality of electric wires, and one end of which is arranged below the first armor and fixed to the utility pole. By having the second arm which supports the device by extending the other end substantially horizontally, it is possible to improve the work efficiency of the live-line work by the robot and to attach it to the arm of the robot during the work. This prevents the tool from interfering with other electric wires.
Further, by integrally forming the first and second arms, the number of parts can be reduced and the assembling performance can be improved.

[Brief description of drawings]

FIG. 1 is a diagram showing a direct activation method in a conventional high-voltage overhead power distribution work.

FIG. 2 is a diagram showing a power distribution work for a high voltage overhead electric wire using a robot.

FIG. 3 is a side view showing an embodiment of a support device for an overhead power distribution line according to the present invention.

FIG. 4 is a front view of FIG.

5 is a partially cutaway plan view of a connecting portion between the armrest 11 and the band 15 of FIG.

6 is a partially cutaway plan view of a connecting portion between the arm 12 and the van 17 of FIG.

FIG. 7 is a side view showing another embodiment of the present invention.

[Explanation of symbols]

 1 Utility pole 4-6, 4'-6 'High-voltage electric wire 11, 12, 13 Arm 15--17 Band 25-27, 25'-27' Tensile insulator 30 Switch 31-33, 31'-33 'High-voltage pull Underline

Claims (2)

[Claims] 1. A first arm member having a substantially V shape, both ends of which are fixed to an upper portion of an electric pole in a substantially inverted triangle shape, and an up-and-down direction on an inclined portion which inclines obliquely downwardly of the first arm member. A plurality of insulators arranged at predetermined intervals for supporting a plurality of electric wires, respectively, and one end fixed to the utility pole and the other end overhanging substantially horizontally and supporting the device by supporting a plurality of electric wires respectively. A support device for an overhead power distribution line, comprising: a second arm. 2. A substantially Z-shaped structure, an upper side portion of which extends substantially horizontally from an upper portion of a utility pole, an inclined portion extends obliquely downward from a connecting portion with the upper side portion to face the utility pole, and a lower side portion of the utility pole. Arms in which the free ends of the upper side portions, the connecting portions of the inclined portions and the lower side portions are fixed to the utility pole, respectively, are support portions that extend substantially horizontally and support the equipment, and the inclination of the arm members. A support device for an overhead power distribution line, comprising: a plurality of insulators supported in a vertical direction at predetermined intervals and supporting a plurality of electric wires, respectively.