JPH0556530A - Overhead line gondola - Google Patents

Abstract

PURPOSE:To provide an overhead line gondola in which a wheel rolling on a clamp is prevented from derailing and the clamp can be easily ridden over even on an overhead line fixed with a Christmas tree type damper. CONSTITUTION:A front wheel 8 and an intermediate wheel 9 are linked through a link member 15 while the intermediate wheel 9 is linked through a link member 16 with a rear wheel 10 and the link members 15, 16 are fixed rotatably to body frames 2, 2. The overhead line gondola is constituted in a manner that the annular grooves 101 of the other two wheels engage with an overhead line 50 so long as one wheel is rolling on a clamp thus regulating lateral displacement of the wheel rolling on the clamp and preventing derailing of the wheel.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an overhead wire traveling device which travels on an overhead wire by rolling wheels.

[0002]

2. Description of the Related Art Overhead lines such as overhead power lines and ground lines may be damaged by wire breakage or melting damage due to vibrations or lightning strikes caused by wind and snow. If left unattended, there is a risk of a wire breakage accident, and from the viewpoint of safety and stable supply of electric power energy, early detection of such damage is desired. Therefore, a self-propelled overhead line flaw detector equipped with a damage detector using the eddy current flaw detection method and a video camera for photographing the outer surface of the overhead line has been put into practical use. As an example of the line flaw detection device, as shown in the side view of FIG. 6, traveling wheels 51 and 52 having annular grooves that engage with the overhead wire 50 are arranged in front of and behind the device main body 53.
It is known that the vehicle is driven by a motor 54 mounted on the apparatus main body 53 to travel on the overhead wire 50. In FIG. 6, reference numeral 55 is a coil mounting body that supports a flaw detection coil (not shown), and reference numeral 56 is a storage box that stores a battery, a control circuit, and the like.

[0003]

By the way, among overhead wires installed between steel towers, especially for overhead wires passing through mountainous areas, a weight-type twist prevention damper 61 as shown in FIG. 7 is used.
Alternatively, a Christmas tree type damper 71 of a line type as shown in FIG. 8 is attached. The twist prevention damper 61 is
In order to prevent vibration and twisting of the overhead wire 50 due to wind, weights 63, 63 are provided below the clamp 62 so as to be parallel to the overhead wire 50, and the overhead wire 50 between the steel towers is constructed. It is attached to several places at predetermined intervals. Further, the Christmas tree type damper 71 is for preventing the breeze vibration of the overhead line 50, and the pair of clamps 72,
72 is a support wire 73 with a bend,
It is attached to an overhead line 50 near the steel tower.

Now, when the above-mentioned conventional overhead wire flaw detector is used to perform flaw detection on the overhead wire 50 to which the twist prevention damper 61 and the Christmas tree type damper 71 are attached, the clamp 62 of the twist prevention damper 61 is As shown in FIG. 7B, the cross-sectional shape of the portion on which the traveling wheel 51 rides is symmetrical with respect to the center of the overhead line 50. Therefore, even if the traveling wheel 51 rides on the clamp 62, the traveling wheel 51
Is not shaken laterally, and even a conventional overhead wire flaw detector can pass over the clamp 62 and pass therethrough.

However, the Christmas tree type damper 71
As shown in FIG. 8 (b), the clamp 72 has a protruding portion 72 a that largely protrudes to one side in the horizontal direction with respect to the center of the overhead wire 50, and the tightening member 74 also protrudes in the same direction. Therefore, in the clamp 72, the cross-sectional shape of the portion on which the traveling wheel 51 rides is asymmetric with respect to the center of the overhead wire 50. Therefore, when the traveling wheel 51 rides on the clamp 72, the traveling wheel 51 may be shaken in the lateral direction and derailed. In the conventional overhead wire flaw detector, the traveling wheel 51 may pass through the clamp 72 of the Christmas tree damper 71. There was a problem that I could not do it. Therefore, the present invention has been devised in consideration of the above circumstances, and even an overhead wire to which a Christmas tree type damper is attached can easily pass over and pass through the clamp without derailing. It is intended to provide a line traveling device.

[0006]

In order to solve the above-mentioned problems, the present invention comprises first, second and third wheels arranged in the traveling direction, and comprises a first wheel and a second wheel. Are connected by the first link member, and the second wheel and the third wheel are connected to the second wheel.
And the first link member and the second link member are rotatably attached to the apparatus main body,
The distance between the first and third wheels is variable within a predetermined range.

[0007]

In the present invention, first, when the first wheel rides on the clamp, the first link member tilts to prevent the second wheel from rising. This causes the annular grooves of the second and third wheels to engage the overhead line while the first wheel is rolling on the clamp. Further, when the second wheel rides on the clamp, the first and second link members tilt and prevent the first and third wheels from floating. This allows the first wheel to move while the second wheel is rolling on the clamp.
And the annular groove of the third wheel engages the overhead line. Further, when the third wheel rides on the clamp, the second link member tilts to prevent the second wheel from rising. This causes the annular grooves of the first and second wheels to engage the overhead wire while the third wheel is rolling on the clamp.

Thus, while one of the wheels is rolling on the clamp, the annular grooves of the other two wheels engage the overhead wire. Therefore, even if a lateral force is generated on the wheel rolling on the clamp due to the overhanging portion of the clamp,
Since the annular grooves of the other two wheels are engaged with the overhead line,
The lateral displacement of the wheel rolling on the clamp is restricted, and the wheel can be prevented from falling off.

In the present invention, since the first and third wheel-to-wheel distances are variable within a predetermined range, each wheel can be independently displaced upward when the clamp is mounted.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to an overhead wire flaw detector will be described below with reference to the accompanying drawings. 1 to 4 show an overhead wire flaw detector according to an embodiment. FIG. 1 is a perspective view, FIG. 2 is a front view, FIG. 3 is a side view, and FIG. 4 is a plan view. As shown in FIGS. 1 to 4, the overhead wire flaw detector 1 according to this embodiment includes two horizontal frames 2 arranged in parallel.
2, and the vertical frames 3a, 3b, ... Hanging from each horizontal frame 2, 2 constitute the main body of the device. The horizontal frames 2, 2 are gate-shaped connecting pipes 4, 4 attached to the front and rear thereof. It is connected and fixed. Vertical frame 3a,
Between the 3b, equipment mounting parts 7 for mounting a battery storage box 5 and a circuit storage box 6 storing electronic devices are provided.

Further, the overhead wire flaw detector 1 is provided with three traveling wheels of a front wheel 8, a middle wheel 9 and a rear wheel 10 in a traveling direction, and the front wheel 8 is rotatably mounted on a gate-shaped wheel support member 11. The center wheel 9 is mounted and supported, and the middle wheel 9 is a gate-shaped wheel support member 12 and 1
3 is rotatably attached and supported, and the rear wheel 10 is rotatably attached and supported by a gate-type wheel support member 14. Further, the front wheels 8, the middle wheels 9, and the rear wheels 10 are provided with a first annular groove 101 for traveling on the overhead wire 50, and FIGS.
It has a second annular groove 102 for traveling over obstacles such as clamps 62, 72 as shown in FIG.

The wheel support member 11 and the wheel support member 12 are connected by a first link member 15, and the wheel support member 13 and the wheel support member 14 are connected by a second link member 16. The link member 15 is attached to the front portions of the horizontal frames 2 and 2 via a gate frame 17 attached to the link member 15 so as to be rotatable about a shaft member 18 as a fulcrum. .. On the other hand, the link member 16 is attached to the rear portions of the horizontal frames 2 and 2 via a gate type frame 19 attached to the link member 16 so as to be rotatable about a shaft member 20 as a fulcrum. Further, the shaft member 20 is inserted into a long hole 21 formed in the rear portion of the horizontal frames 2 and 2 so that the shaft member 20 can be displaced by a predetermined distance in the traveling direction with respect to the horizontal frames 2 and 2. There is. It is also possible to form a long hole in the front portions of the horizontal frames 2 and 2 so that both the shaft member 18 and the shaft member 20 are inserted into the long hole.

The link member 15, as shown in FIG.
The coil supporting members 23a and 23b for supporting the flaw detection coils 22, 22, which detect damage such as wire breakage and melting loss of the overhead wire 50 by the eddy current flaw detection method are supported so as to be openable and closable, and the overhead wire flaw detector is provided. When the coil 1 passes through obstacles such as the torsion prevention damper 61 and the Christmas tree type damper 71, the coil support members 23a and 23b are provided to prevent collision and contact between the flaw detection coils 22, 22 ,. The drive mechanism (not shown) retracts to the position of the broken line shown in FIG.

On the other hand, the link member 16 slidably supports a camera 24 for photographing the outer surface of the overhead wire 50. The camera 24 is held at two positions, a photographing position and a storage position. Is configured. Further, the link member 16 has an overhead wire 50 which is a blind spot of the camera 24.
The V-shaped mirror 25 is rotatably supported so that the entire circumference of the overhead wire 50 is contained within the angle of view of the camera 24, and the V-shaped mirror 25 also interferes with the overhead wire flaw detector 1. When passing an object, a driving mechanism (not shown) retracts it to a predetermined position in order to prevent collision and contact with an obstacle. Further, a motor mounting member 28 to which a motor 26 and a reduction mechanism 27 are attached is attached to the rear portion of the link member 16, and the driving force of this motor 26 is a chain 30 suspended between the reduction mechanism 27 and a sprocket 29. , Chain 3 suspended on sprockets 31 and 32
It is transmitted to the front wheel 8, the middle wheel 9 and the rear wheel 10 by means of a chain 36 suspended from the shaft 3 and the sprocket 34 and the sprocket 35.

In front of the front wheel 8, an obstacle detection sensor 37 for detecting an obstacle on the overhead line 50 is mounted on the bracket 3.
It is attached to the overhead wire flaw detector 1 via 8, and when the obstacle detection sensor 37 detects an obstacle, the coil support members 23a and 23b and the V-shaped mirror 25 are configured to retreat to a predetermined position. There is.

Next, the operation of the overhead wire flaw detector according to this embodiment will be described with reference to the operation explanatory view of FIG. The overhead wire flaw detector 1 is configured such that the shaft member 20 can be displaced by a predetermined distance in the traveling direction as described above, and the distance between the front wheel 8 and the rear wheel 10 is made variable, whereby an obstacle such as the clamp 72 is obtained. The front wheel 8, the middle wheel 9, and the rear wheel 10 can be independently displaced upward when riding. First,
FIG. 5A schematically shows a state in which the overhead wire flaw detector 1 is traveling on the overhead wire 50.

Next, as shown in FIG. 5 (b), the overhead wire flaw detector 1 reaches the location of the clamp 72 and reaches the front wheel 8.
When the vehicle rides on the clamp 72, the link member 15 tilts to prevent the middle wheel 9 from rising. This allows the front wheels 8
While rolling on the clamp 72, the middle wheel 9 and the rear wheel 10 roll on the overhead wire 50 while their annular grooves 101 engage with the overhead wire 50. Further, as shown in FIG. 5C, when the middle wheel 9 rides on the clamp 72, the link members 15 and 16 tilt and prevent the front wheels 8 and the rear wheels 10 from rising. As a result, while the middle wheel 9 rolls on the clamp 72, the front wheel 8 and the rear wheel 10 roll on the overhead wire 50 while their annular grooves 101 engage with the overhead wire 50. Then, as shown in FIG. 5D, the rear wheel 10
When the vehicle rides on the clamp 72, the link member 16 tilts to prevent the middle wheel 9 from rising. This allows the rear wheel 1
While 0 is rolling on the clamp 72, the front wheel 8 and the middle wheel 9 roll on the overhead wire 50 while their annular grooves 101 engage with the overhead wire 50.

Thus, while one of the wheels is rolling on the clamp 72, the annular grooves 101 of the other two wheels engage the overhead wire 50. Therefore, even if a lateral force is generated on the wheel rolling on the clamp 72 due to the overhanging portion 72a of the clamp 72, the annular grooves 101 of the other two wheels engage with the overhead wire 50. Clamp 7
The lateral displacement of the wheel rolling on 2 is restricted, and the wheel can be prevented from falling off.

As described above, according to the overhead wire flaw detector of the present embodiment, it is possible to prevent the wheels rolling on the clamp 72 from coming off, so that the Christmas tree type damper 7 can be prevented.
Even an overhead wire to which 1 is attached can easily get over the clamp 72 and pass therethrough. In addition, the first wheel 8 having the front wheel 8, the middle wheel 9 and the coil support members 23a and 23b attached thereto
Link member 15, the middle wheel 9, the rear wheel 10, the camera 24,
The second link member 16 to which the V-shaped mirror 25 and the motor mounting member 28 are attached is attached to the horizontal frames 2 and 2 as the shaft member 1.
Since it is configured with only 8 and 20, it is easy to assemble during manufacturing and disassemble and assemble during maintenance.

In the above embodiment, the shaft member 20 is formed into the elongated hole 2.
1 to make the distance between the front wheel 8 and the rear wheel 10 variable, whereby the front wheel 8, the middle wheel 9, and the rear wheel 10 can be independently displaced upward when the obstacle such as the clamp 72 is climbed up. Although the structure configured as described above has been illustrated, at least one of the first link member 15 and the second link member 16 is provided with a telescopic mechanism to make the distance between the front wheel 8 and the rear wheel 10 variable, whereby the clamp 72 is provided. The front wheel 8, the middle wheel 9, and the rear wheel 10 can be independently configured to be able to be displaced upward when riding on an obstacle such as. Although the present invention is applied to the overhead wire flaw detector, the present invention can also be applied to, for example, an aerial vehicle used when performing maintenance and inspection of an overhead wire, and its applicable range is It is optional.

[0021]

As described above, according to the overhead wire traveling device of the present invention, it is possible to prevent the wheels rolling on the clamps from coming off, so that even an overhead wire equipped with a Christmas tree type damper can be prevented. , The clamp can be easily crossed over and passed.

[Brief description of drawings]

FIG. 1 is a perspective view of an overhead wire flaw detector according to an embodiment of the present invention.

FIG. 2 is a front view of the overhead wire flaw detector.

FIG. 3 is a side view of the overhead wire flaw detector.

FIG. 4 is a plan view of the overhead wire flaw detector.

FIG. 5 is an operation explanatory diagram of the overhead wire flaw detector.

FIG. 6 is a side view of a conventional overhead wire flaw detector.

FIG. 7 is a configuration diagram of a twist prevention damper.

FIG. 8 is a block diagram of a Christmas tree damper.

[Explanation of symbols]

 1 ………… Overhead line flaw detector 2 ………… Horizontal frame 8 ………… Front wheel 9 ………… Middle wheel 10 ………… Rear wheel 15 ………… First link member 16 ………… Second Link member 21 ..... long hole 101 ... first annular groove

(72) Inventor Kazumasa Ooka, Marunouchi 2-5, Takamatsu City, Kagawa Shikoku Electric Power Company (72) Inventor Toshio Sugano 2-1-1, Oda Sakae, Kawasaki-ku, Kanagawa Prefecture Showa Densen Inside Denpa Co., Ltd. (72) Inventor Mizuo Kiuchi 2-1-1 Oda Sakae, Kawasaki-ku, Kawasaki City, Kanagawa Prefecture

Claims (1)

[Claims] 1. An overhead line traveling apparatus comprising a wheel having an annular groove engaged with an overhead line, and traveling on the overhead line by rolling of the wheel, wherein the wheel is arranged in a traveling direction. Second and third
The first wheel and the second wheel are connected by a first link member, and the second wheel and the third wheel are connected by a second link member, An overhead wire, wherein the first link member and the second link member are rotatably attached to the apparatus main body, and the first and third wheel distances are variable within a predetermined range. Traveling device.