JPH0323772Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an improvement of a self-propelled spacecraft used for power transmission lines.

[Conventional technology] A spacecraft is used to run over power transmission lines with electricians on board for reinstallation of spacers on overhead lines, maintenance after the overhead lines, etc.A conventional spacecraft is shown in Figure 4. The gondola 1' is connected to the power transmission line W.
It was suspended by rollers 2, 2 running above or by a rotating part (not shown) in which an endless rotating belt was attached to the rollers, and was moved by human power.

However, in mountainous regions, where the power transmission line has a steep angle, it is difficult to move it manually, so a roller mounting frame 11 with rollers 12 attached to both ends of the roller mounting frame 11 as shown in Figs. 5 and 6 is installed above the power line. , the caterpillar 13 is positioned below the power transmission line, and the roller 1
2 is lowered by a handle 10 to press the power transmission line against the caterpillar 13, the power transmission line is held between the rollers 12 and the caterpillar 13, and the shaft 18 is rotated from the engine 6 via the belt 17, thereby making the caterpillar 13 run. 13
A self-propelled spacecraft has been proposed (Japanese Patent Laid-Open Publication No. 7641/1983) that applies driving force to a and moves it dynamically.
Note that 23 is a roller running on the other power transmission line.

However, in recent years, power transmission lines W have become multi-conductor, and with this multi-conductor, spacers S have been installed to maintain the distance between the wires, and the outer diameter of these clamps has increased to 230% of the wire outer diameter. There is something to reach,
In addition, conductor connection sleeves have become larger, reaching about 170% of the wire diameter, and rings and spiral rods have been installed to prevent snow buildup and reduce noise. In engine-driven and other self-propelled spacecraft that do not take into account overcoming, the height of the rollers is fixed so that the distance between the rollers and the caterpillar does not change in order to keep the caterpillar in strong contact with the power transmission line. As a result, it becomes difficult to run over uneven parts such as spacers or clamps on the power transmission line, causing problems such as damage to the rollers and caterpillars, or in the worst case, the vehicle becoming unable to run.

Therefore, it is conceivable to install a spring (not shown) in the lifting device 19 shown in FIG. 5 so that the roller mounting frame 11 can be moved up and down by the elasticity of the spring, but as shown in FIG. When the roller 12 reaches the clamp portion 20 of the spacer and tries to get over it, since no driving force is applied to the roller 12, the roller 12 acts as a brake, and the roller mounting frame 11 and the caterpillar 13 are always parallel. In addition, since the elastic force of the spring acts on the center point of the roller mounting frame, a very large force is required to compress the spring so that the distance between the roller mounting frame 11 and the caterpillar 13 increases. It was not possible to get over the clamp part 20 unless there was power.

If the roller 12 (or caterpillar 13) starts to climb over the clamp part 20 as shown in FIG. 8, it will tilt due to the weight of the spacecraft.
Then, the front roller 12 and the caterpillar 13
When simultaneously riding on the clamp part 20, only the rear roller 12 is in contact with the power transmission line W,
If the power transmission line W shakes, the moving direction of the front roller 12 and caterpillar 13 will shift,
There was a risk that the wheels would fall off once they got over the clamp portion 20, which was extremely dangerous. Furthermore, if the spacecraft were to tilt and return to its original position each time the two rollers 12 got over the clamp portion 20, the spacecraft would shake greatly in the direction of travel, which was very dangerous. This means that the distance between the two rollers 12 and the caterpillar 1
This is true regardless of the difference in length between 3 and 3.
Improvement of this was strongly desired.

[Purpose of the invention] In view of the above-mentioned prior art, the purpose of the invention is to provide a self-propelled spacecraft that can stably travel even on uneven surfaces on power transmission lines.

[Summary of the invention] The gist of the invention is that two caterpillar belts are provided on the outer periphery of two drive wheels, and two caterpillar belts are provided above and below a power transmission line so as to sandwich the power transmission line.
In addition, the drive wheels positioned above and below have a spring elastic force in a direction that sandwiches the power transmission line, and an engine that applies running driving force to the drive wheels at the top and bottom is directed downward so that the above-mentioned caterpillars at the top and bottom run. This is because the gondola is equipped with this.

[Example] Hereinafter, an example of the present invention will be described based on the drawings.

Figure 1 shows a front view of the spacecraft according to the present invention,
FIG. 2 shows its side view.

This example shows a case where the present invention is applied to a four-conductor power transmission line. W and W are power transmission lines, and 1 is a gondola.

In the present invention, the rollers 2, 2 that suspend the gondola 1 are also used;
2 does not provide the driving force for self-propulsion of the spacecraft, but its main purpose is to support gondola 1.

This drive is performed exclusively by the caterpillars 3, 3' which hold the power transmission line W between them.

FIG. 3 shows how the power transmission line W is held between the caterpillars 3 and 3'. Such a caterpillar 3, 3' consists of two drive wheels 3a or 3'a and a caterpillar belt 3b or track belt 3'b provided on the outer periphery of the two drive wheels 3a or 3'a, which are positioned one above the other as shown in FIG. Drive wheel 3
a and the drive wheel 3'a are adapted to press and clamp the caterpillar 3 and the caterpillar 3' against the power transmission line W by the elastic force of the spring 4 of the clamping force adjustment device 7. The handle 5 is part of the clamping force adjustment device 7 and is used to adjust the elastic force of the spring 4.

Reference numeral 6 is an engine that produces hydraulic pressure, and the hydraulic pressure is transmitted through a pipe to the driving wheels 3 of the caterpillars 3 and 3'.
A and 3'a are loaded and hydraulically driven. However, it is not limited to hydraulic drive.

7' is a cylinder that moves the gondola 1 up and down, and 8 is a brake. When this is pulled down, the brake shoe 8a is brought into contact with the power transmission line W by the lever action, and traveling is stopped. When it is pulled up, the brake shoe 8a is is released.

6a is a lever for operating the engine. 9
is the gondola's horizontal holding cylinder.

With this configuration, as shown in FIG. 9, both the caterpillars 3 and 3' are driven even when passing through the clamp portion 20 of the spacer, so the caterpillar 3a is braked as in the conventional case. Furthermore, even if the front caterpillars 3, 3' change their distance and ride on the clamp part 20, the rear caterpillars 3, 3' firmly clamp the power transmission line W. Therefore, the caterpillars 3, 3' can freely change their shape and easily climb over the clamp portion 20 without coming off the track even when the power transmission line swings to some extent. Note that even if the distance between the caterpillars 3 and 3' changes, the drive wheels 3a and
Since only the interval 3'a changes, the spacecraft and gondola will not tilt even when climbing over the clamp part 20.

In addition, the contact with the power transmission line W is large, and the driving force is enormous, ensuring a truly enjoyable driving experience.

According to the embodiments of the present invention as described above, (1) Even when the outer diameters of the power transmission lines are significantly different, that is, even when there are uneven parts on the power transmission lines, it is possible to travel easily and safely.

(2) A maximum temperature of 40 m/min can be achieved, and the inspection time for long-span power transmission lines is greatly reduced.

(3) It is possible to run even in the presence of machine oil, moisture, etc. on the wire surface.

(4) Can run on its own even on steep slopes (for example, catenary angle of 35 to 40 degrees).

A number of effects can be expected.

[Effects of the invention] As explained above, according to the invention, two caterpillar belts are provided above and below the power transmission line so as to sandwich the power transmission line, and two caterpillar belts are provided on the outer periphery of the two drive wheels. The drive wheels have a spring elastic force in the direction that grips the power transmission line, and the driving force is applied to the upper and lower drive wheels so that the upper and lower caterpillars move, making it easy to overcome uneven surfaces on the power transmission line. It has the remarkable effect of being able to run smoothly and stably.

[Brief explanation of the drawing]

Figure 1 is a front view of the spacecraft according to the present invention, Figure 2 is its side view, Figure 3 is an explanatory diagram showing the condition of the caterpillar, and Figures 4 to 6 show conventional spacecraft. The sketch, Figures 7 and 8 are explanatory diagrams showing how a conventional self-propelled spacecraft rides over the clamp part of the spacer, and Figure 9 shows how the caterpillar of the spacecraft of the present invention climbs over the clamp part of the spacer. FIG. 2 is an explanatory diagram showing the situation. 1, 1'... Gondola, 2... Roller, 3, 3'... Caterpillar, 3a, 3'a... Drive wheel, 3b, 3'b...
Caterpillar belt, 4...Spring, 5...Handle, W
...Power line, S...Spacer.

Claims (1)

[Scope of utility model registration request] Two caterpillar belts are provided on the outer peripheries of the two drive wheels, and two caterpillar belts are provided above and below the power transmission line so as to sandwich the power transmission line, and the drive wheels located above and below are provided with springs in the direction of sandwiching the power transmission line. A self-propelled aerial vehicle for a power transmission line, characterized in that a lower gondola is equipped with an engine that has elastic force and provides running driving force to the upper and lower drive wheels so that the upper and lower caterpillars run. Boarding machine.