JPH0246118A - Method and device for inspecting overhead transmission line - Google Patents

Abstract

PURPOSE:To inspect an overhead transmission line without applying load onto an overhead earth wire by fixing monitor unit to a balloon then moving the balloon along the overheat earth wire while mooring the balloon to the overhead earth wire. CONSTITUTION:An inspector 10 is fixed to an overhead earth wire 21A and moved along an overhead earth wire 21A through propulsion of a propeller propulsion unit 16 while being floated through buoyancy of a balloon 11, thus photographying the condition of an overhead transmission line through a television camera 17. When the inspector 10 arrives to a steel tower 22, the balloon 11 passes through the steel tower 22 through a series of operation, i.e., opening of a second rear holding member 14B, rotary motion of a first front foot body 12A (the balloon 11 rotates around the first foot body 12A), holding of an overhead earth wire 21B at the tip of the steel tower 22 with a second holding member 14B, opening of the first holding member 14A, rotary motion of the second foot body 12B (the balloon 11 rotates around the second foot body 12B) and holding of the overhead earth wire 21B beyond the second holding member 14B with the first holding member 14B.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for inspecting overhead power transmission lines and a device used therefor.

[Prior art]

Methods of checking whether overhead power transmission lines are in normal condition include patrolling on foot by a supervisor, or using a helicopter.
A method of patrolling with a supervisor or monitoring equipment on board, a method of driving a self-propelled aircraft equipped with monitoring equipment along an overhead power line, a method of flying an unmanned airship equipped with monitoring equipment along an overhead power transmission line, etc. is publicly known.

〔assignment〕

However, the method using observers requires a lot of labor and time, and the method using a helicopter has the disadvantage of being expensive. In addition, in the method using a self-propelled machine, it is difficult for the self-propelled machine to climb over the steel tower, and if the self-propelled machine is provided with a mechanism for climbing over the steel tower, it will be heavier, causing problems in terms of handling, strength of the overhead ground wire, etc.

Additionally, attaching rails for passing self-propelled aircraft to steel towers can reduce the weight of self-propelled aircraft, but installing rails on all the towers on overhead power transmission lines would be costly. Furthermore, since the unmanned airship method uses radio control, it can only be used within the range where the pilot can see the airship, and it also has the drawback that it requires a lot of manpower because the pilot is always present during patrols.

[Means for solving problems and their effects]

The present invention provides a method for inspecting overhead power transmission lines that solves the above-mentioned problems, and has a structure in which a plurality of balloons equipped with monitoring equipment for overhead power transmission lines are movable in the longitudinal direction of an overhead ground wire. The balloon is moored to the overhead ground wire by the mooring member, and while the balloon is moved along the overhead ground wire, the overhead transmission line 11i is monitored by the monitoring equipment, and when the balloon comes to the steel tower section, multiple The feature is that the mooring members are successively replaced from the previous overhead ground wire to the overhead ground wire at the end of the tower to get over the tower.

This method involves moving a balloon equipped with monitoring equipment along an overhead ground wire, so there is almost no load on the overhead ground wire, and there is no need for maneuvering. The operation is simple because a plurality of mooring members to the ground wire are provided and these mooring members are sequentially replaced with the overhead ground wire at the end of the steel tower.

A balloon is filled with argon gas or hydrogen gas to give it buoyancy, and its shape is not particularly limited, but it is preferably elongated in the direction of the railroad track rather than spherical.Also, a television camera is used as monitoring equipment. etc. are used. The balloon can be moved by attaching a propeller to the balloon like an airship, or by attaching wheels to the engagement part of the mooring member with the overhead ground wire and driving the wheels to rotate.

The present invention also provides an overhead power transmission line inspection device suitable for carrying out the above method, which includes a balloon equipped with overhead power transmission line monitoring equipment, and a balloon extending downward from the balloon. the first and second legs, an overhead ground line holding member attached to the lower ends of these legs, and a propulsion device for moving the balloon along the overhead ground line; Each of the legs is capable of rotating about its own axis relative to the balloon, and the above-mentioned overhead ground wire holding member has two positions: a position where the overhead ground wire is movably held, and a position where the overhead ground wire is released. It is characterized by being able to move back and forth.

This device monitors the overhead power transmission line using monitoring equipment while moving the balloon along the overhead ground wire. When the balloon reaches the tower, the second holding member at the rear is released. , rotational drive of the first leg in front (this causes the balloon to rotate around the first leg), holding the overhead ground wire at the end of the tower by the second holding member, and Opening of the holding member, rotational driving of the second leg (the balloon now rotates about the second leg), imaginary tl before the second holding member by the first holding member! ! The robot climbs over the steel tower using a motion known as "holding on the wire."

〔Example〕

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

Figure 1fal (bl shows an embodiment of the overhead power transmission line inspection device according to the present invention. Lit is a balloon filled with argon gas or hydrogen gas to give it buoyancy, and is elongated in the front and rear direction. 12A and 12B are legs attached to the front and rear parts of the balloon 11, respectively, so as to be directed downward via rotary drive devices 13A and 13B.

The legs 12A and 12B each have a rotational drive device 13A -
13B allows it to rotate around its own axis. 14A-148 is the leg 12A-12
These are overhead ground wire holding members attached to the lower ends of B via rotary drive devices 15A to 15B, respectively. The holding members 14A-14B hold the aerial tl 121 shown in FIG. There are m bodies 12A and 12B and holding members 14A and 12B.
Reference numeral 14B constitutes a mooring member for mooring the balloon 11 to the overhead ground wire 21.

Further, 16 is a propeller propulsion device attached to the lower part of the balloon 11, and 17 is a television camera for monitoring the overhead power transmission line.

Next, an embodiment of the overhead power transmission line inspection method according to the present invention using the above-mentioned inspection device will be described in detail with reference to FIGS. 2 to 7.

The inspection bag if 10 is attached to the overhead ground wire 21A as shown in FIG. The situation is shadowed by a television camera 17.

When the inspection device 1O reaches the position of the steel tower 22, in order to climb over it, first rotate the second holding member 14B at the rear downward as shown in FIG. a21 A
to open. Next, when the first leg 12A in the front is rotated by the rotary drive device 13A, the first leg 12A
The holding member 14A gets caught on the overhead ground wire 21 and cannot rotate beyond a certain limit, so the reaction force causes the balloon 11 to rotate as shown in Figure 4.
As shown in FIG. 2 , it rotates around the first leg 12A, and the second holding member 14B located at the rear rotates to the front of the steel tower 22. In this state, as shown in FIG.
Rotate B upward to reach the overhead ground line 218m beyond the steel tower 22.
After holding it, the first holding member 14A is rotated downward to release the overhead ground wire 21A.Next, when the second leg body 12B that has turned forward is rotated by the rotary drive device 13B,
Although the first leg 12B cannot rotate beyond a certain limit, the reaction force causes the balloon 11 to rotate as shown in FIG.
Rotating around B, the first holding member 14A turns in front of the second holding member 14B. In this state, as shown in FIG. 7, the first holding member 14A is rotated upward to hold the aerial land m21B. Although climbing over the steel tower 22 is now completed, the apparatus 10 can be subsequently moved to monitor the overhead power transmission line.

In addition, if rollers 31 are attached to the holding members 14A-14B as shown in FIG. 8, the movement along the overhead area &121 can be performed more smoothly.

Moreover, the holding members 14A-14B are UjJ-! Hat(b
It is also possible to adopt a structure in which the overhead ground wire 21 is sandwiched as shown in FIG. In this example, the linear drive device 3 is attached to the lower end of the leg 12.
2 and an upper roller 33 are attached, and a support rod 35 of the lower roller 34 is moved up and down by a linear drive device 32.

If the overhead ground wire is sandwiched between rollers in this manner, the entire device can be moved along the overhead ground wire by rotationally driving the rollers, and the propeller propulsion device can also be omitted.

Further, in the above embodiment, the balloon was rotated by the force of rotating the legs to climb over the steel tower, but it is also possible to climb over the steel tower by combining the extension/contraction or tilting of the legs with the forward motion of the balloon without rotating the balloon. It is possible to overcome it. In this case, there may be three or more legs.

〔Effect of the invention〕

As explained above, according to the present invention, the monitoring equipment is attached to the balloon, and the balloon is moored to the overhead ground line and moved along the overhead ground line, so that most of the load is applied to the overhead ground line. Overhead power transmission lines can be inspected without having to fly or operate a balloon. Furthermore, since a plurality of members are provided for mooring the balloon to the overhead ground wire, by sequentially mooring these members to the overhead ground wire at the end of the steel tower, it is possible to climb over the steel tower section.

[Brief explanation of the drawing]

Figure 1faHbl is a side view and front view showing an embodiment of the overhead power transmission line inspection device according to the present invention, Figures 2 to 7 are explanatory views showing the overhead power transmission line inspection method according to the present invention, and Figure 8 9 is a front view showing another example of the overhead ground wire holding member used in the apparatus of the present invention, and FIG. It is a front view. 1O: Overhead power transmission line inspection device, 11: Balloon, 12A.1
2B: Leg body, +3A・13B is rotation drive device, 14A・
14B: Holding member, 15A-15B: Rotation drive device, 16: Propeller propulsion device, 17: Television camera, 21
A/21B: Overhead ground wire, 22: Steel tower. Applicant's agent Patent attorney Hiroshi Wakabayashi Figure 1 - (a) (b) Figure 2 Figure 8 Hand U0 Fu Seisho (spontaneous) November 1, 1986

Claims (1)

[Claims] 1. A balloon with monitoring equipment for overhead power transmission lines attached is moored to the overhead ground wire by a plurality of mooring members movable in the longitudinal direction of the overhead ground wire, and in this state, the balloon is moored to the overhead ground wire. The above-mentioned monitoring equipment monitors the overhead power transmission line while moving the balloon along the tower, and when the above-mentioned balloon reaches the tower, multiple mooring members are sequentially moved from the overhead ground wire to the overhead ground wire beyond the tower. A method for inspecting overhead power transmission lines that involves climbing over a steel tower by replacing the lines. 2. A balloon to which monitoring equipment for an overhead power transmission line is attached, first and second legs extending downward from this balloon, an overhead ground wire holding member attached to the lower ends of these legs, and the above-mentioned balloon. a propulsion device for moving the balloon along the overhead ground line, the first and second legs are each rotatable about its own axis relative to the balloon, and An inspection device for an overhead power transmission line, characterized in that the member is capable of reciprocating between a position where the overhead ground wire is movably held and a position where the overhead ground wire is released.