JPH08185743A - Dirt removing device and dirt removing method for insulator - Google Patents

Abstract

PURPOSE: To uniformly remove dirty materials stuck on the outer face of an insulator without generating removal irregularities. CONSTITUTION: A frame 1 supporting a brush 26 is fitted rotatably around an insulator 2. The frame 1 is rotated by the motor 8 of the first rotating mechanism 3 via a roller 6 so that the brush 26 is brought into contact with the same position on the outer face of the insulator 2 at least twice. During the rotation of the frame 1, the brush 26 is rotated by the motor of the second rotating mechanism 27 while its rotating direction is changed, and the dirty materials stuck on the outer face of the insulator 2 are removed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insulator fouling removal device and a fouling removal method for removing fouling substances adhering to the outer surface of an insulator.

[0002]

2. Description of the Related Art As a conventional contamination removing device for insulators of this type, one having a structure as shown in, for example, Japanese Utility Model Laid-Open No. 5-79823 is known. In this conventional device, the rotating brush is arranged so as to extend tangentially to the outer peripheral surface of the insulator between the cap portions of the insulator. In this state,
The rotating brush is rotated in one direction by the motor, and the tip of the brush portion comes into contact with the front surface and the back surface of the adjacent cap portion to remove the contaminants attached to those surfaces.

[0003]

However, in this conventional insulator removing device for insulators, the rotating brush is arranged to rotate in one direction while being arranged between the cap portions of the insulators. Therefore, of the outer peripheral surface and the inner peripheral surface of the annular insulating fold projecting on the back surface of the cap portion of the insulator, on one peripheral surface located on the upper side in the rotation direction of the rotating brush,
The tip of the brush portion is sufficiently brought into contact with it, and the contaminant can be effectively removed. On the other hand, on the other peripheral surface located on the lower side in the rotation direction of the rotary brush, the tip of the brush portion does not sufficiently contact, so that there is a problem that the contaminants cannot be effectively removed.

The present invention has been made by paying attention to such problems existing in the conventional technology. The purpose is to prevent the uneven removal of contaminants on the outer peripheral surface and the inner peripheral surface of the insulating fold projecting on the back surface of the insulator cap, and to remove contaminants adhering to the outer surface of the insulator. It is an object of the present invention to provide an insulator fouling removal device and a fouling removal method that can remove uniformly.

[0005]

Means for Solving the Problems In order to achieve the above object, according to the invention of an insulator fouling removal device of claim 1, a frame rotatably mounted around the insulator and an outer surface of the insulator are provided. A brush rotatably supported on the frame for contact, a first rotating means for rotating the frame so that the brush contacts the same location on the outer surface of the insulator at least twice, and a brush during rotation of the frame. And a second rotating means for rotating while rotating its rotation direction.

According to the second aspect of the present invention, the frame is rotatably mounted around the insulator, and a plurality of frames are rotatably supported on the frame so as to be arranged between a pair of adjacent cap portions of the insulator. Brushes, first rotating means for rotating the frame so that each brush contacts the same location on the outer surface of the insulator at least once, and directions in which the brushes slide on the outer surface of the insulator while the frame is rotating. And a second rotating means for rotating so that

According to a third aspect of the present invention, in the insulator fouling removing device according to the first aspect, the first rotating means first rotates the frame about half a turn in one direction and then about one turn in the other direction. The second rotating means is configured to rotate and again rotate about a half direction in one direction, and the second rotating means is configured to change the rotating direction of the brush in association with the switching of the rotating direction of the first rotating means. is there.

According to a fourth aspect of the present invention, in the insulator fouling removing device according to the first or second aspect, the brush has the same pitch as the arrangement pitch of the cap portions along the arrangement direction of the cap portions of the insulator. A plurality of them are arranged.

According to a fifth aspect of the present invention, in the insulator fouling removing device according to the fourth aspect, the plurality of brushes arranged along the arrangement direction of the cap portion of the insulator are adjacent to each other by the second rotating means. The brushes are connected so as to be alternately rotated in opposite directions.

According to a sixth aspect of the present invention, in the insulator fouling removing device according to the first or second aspect, the brush is connected to the rotating shaft of the second rotating means via an elastic coupling. It is a thing.

According to a seventh aspect of the present invention, there is provided a frame for supporting a brush, the frame supporting the brush being rotatably mounted around the insulator, and the brush having different sliding directions with respect to the same location on the outer surface of the insulator. The frame and the brush are rotated so as to come into contact with each other at least once to remove the contaminants attached to the outer surface of the insulator.

[0012]

[Operation] In the inventions of claims 1 and 3,
The frame supporting the brush is rotatably mounted around the insulator. In this state, the frame is rotated by the first rotating means and the brush is brought into contact with the same portion of the outer surface of the insulator at least twice. While the frame is rotating, the brush is rotated by the second rotating means to remove the contaminants attached to the outer surface of the insulator. At this time, the direction of rotation of the brush is changed, and the tip of the brush is evenly contacted with the outer and inner peripheral surfaces of the insulating folds projected on the back surface of the cap portion of the insulator, and the peripheral surfaces of the brush are contaminated. It is possible to prevent uneven removal of objects.

According to the second aspect of the present invention, the frame is rotatably mounted around the insulator, the frame is rotated by the first rotating means, and the plurality of brushes are respectively placed at the same position on the outer surface of the insulator. Contacted at least once. While the frame is rotating, each brush is rotated by the second rotating means to remove the contaminants attached to the outer surface of the insulator. At this time, since the brushes are rotated so that the sliding directions of the brushes with respect to the outer surface of the insulator are different from each other,
It is prevented that the tip of the brush is evenly contacted with the outer peripheral surface and the inner peripheral surface of the insulating fold projecting on the back surface of the cap portion of the insulator, and uneven removal of contaminants occurs on those peripheral surfaces. It

According to a fourth aspect of the present invention, a plurality of brushes arranged along the arrangement direction of the cap portion of the insulator,
It is placed between each cap portion of the insulator. In the invention according to claim 5, the load torque acting on each brush due to the contact with the insulator is offset as a whole. Therefore, the stain removing device is operated stably.

In the invention described in claim 6, the direction of the brush can be changed. In the invention according to claim 7, since the brush is brought into contact with the same portion of the outer surface of the insulator at least once in different sliding directions, the insulating fold portion projected on the back surface of the cap portion of the insulator is formed. It is possible to prevent the tips of the brushes from coming into contact with the outer peripheral surface and the inner peripheral surface evenly, and thereby causing uneven removal of contaminants on those peripheral surfaces.

[0016]

(First Embodiment) A first embodiment of an insulator fouling removal device and a fouling removal method embodying the present invention will now be described in detail with reference to FIGS. 1 to 7.

As shown in FIGS. 1 to 3, a frame 1 is rotatably mounted around a long insulator 2 having a plurality of cap portions 2a, and a pair of thin plate-shaped support arms 1a extending in an arc shape.
And an elongated support plate 1b fixed between the base end portions of both support arms 1a. The first rotation mechanism 3 as the first rotation means is mounted on both support arms 1 a of the frame 1 and rotates the frame 1 along the outer circumference of the insulator 2.

The pair of rotating shafts 4 in the first rotating mechanism 3 are rotatably supported by the base end of each supporting arm 1a via a bearing sleeve 5. The pair of drive rollers 6 are fixed to the ends of the rotary shafts 4 with screws 7, and a small tip small diameter portion 6a, an intermediate large diameter portion 6b, and a small proximal end diameter portion 6c are formed on the outer circumference thereof. A pair of first motors 8 whose rotational directions can be switched are attached to the end faces of the bearing sleeves 5 via brackets 9, and their motor shafts are connected to the rotary shafts 4.

Then, as shown in FIG. 5, each drive roller 6 is applied between a pair of adjacent cap portions 2a at the central portion of the insulator 2 in the axial direction. As a result, the intermediate large-diameter portion 5b of the drive roller 6 is inserted between the pair of cap portions 2a, and the tip small-diameter portion 5a and the base small-diameter portion 5c are inserted into each cap portion 2a.
It contacts the outer peripheral surface of a. In this state, both drive rollers 6
Is rotated by the first motor 8 to move the frame 1 to the insulator 1
Is rotated relatively around.

As shown in FIGS. 1 to 3, a pair of rotary levers 10 are rotatably supported by the tip ends of the respective support arms 1a via pins 11, and the operation pieces 10a are provided outside the bases thereof. Is projected. The pair of support shafts 12 are rotatably supported by the tip end portions of the rotary levers 10, and the nipping rollers 13 are fixed to the end portions by screws 14.
Then, like the drive roller 6, the nip roller 1
Also on the outer periphery of 3, a tip small diameter portion 13a, an intermediate large diameter portion 13b and a base end small diameter portion 13c are formed.

The pair of mounting plates 15 are the support arms 1a.
It is fixed to the outer surface of. The pair of rods 16 is rotatably attached to each attachment plate 15 via a fulcrum pin 17,
The tip ends of these are connected via a fulcrum pin 18 to the operation piece 10a of each rotation lever 10 so as to be relatively rotatable and slidable. The springs 19 are externally inserted to the rods 16 respectively and urge the turning lever 10 toward the center of the frame 1.

As a result, each nipping roller 13 is pressed between the pair of adjacent cap portions 2a on the insulator 2 at a position corresponding to the driving roller 6. Then, similarly to the drive roller 6, the intermediate large diameter portion 13b of the holding roller 13 is inserted between the pair of cap portions 2a, and the tip small diameter portion 13 is formed.
a and the base end small diameter portion 13c are in contact with the outer peripheral surface of each cap portion 2a. In this state, the frame 1 is rotatably mounted on the outer circumference of the insulator 2 by the four rollers 6 and 13.

As shown in FIGS. 1 and 6, a pair of air cylinders 20 which also serve as gripping rods are attached to the respective mounting plates 15, and a holding body 21 is fixed to the tip of the piston rod. Then, when the sandwiching roller 13 is arranged at the inner position where it comes into contact with the outer peripheral surface of the insulator 2, when the air cylinder 20 is projected, the holding body 21 engages with the operation piece 10a of the rotating lever 10. And then nip roller 1
3 is held in the same position.

A pair of releasing operation handles 22 are rotatably attached to the outer periphery of each of the air cylinders 20 via attachment fittings 23. A connecting cable 24 composed of a pair of electric-proof cables is stretched between the supporting metal fittings 25 and the mounting metal fittings 23 on each mounting plate 15, and both ends of their core wires 24a are connected to the operation handle 22 and the rotating lever 10. ing. Then, when the air cylinder 20 is contracted, the outer periphery of the cylinder 20 is gripped, and when the operation handle 22 is rotated from the solid line position in FIG. 1 to the chain line position, the rotation lever is provided via the core wire 24a of the connecting cable 24. 10 is rotated to the outside of the frame 1, and the holding roller 13 is separated from the outer peripheral surface of the insulator 2.

As shown in FIGS. 1, 2 and 4, a plurality of rotating brushes 26 are provided on the support plate 1b of the frame 1 along the arrangement direction of the cap portions 2a of the insulator 2 along the arrangement direction of the cap portions 2a. They are arranged at the same pitch as the arrangement pitch. Then, when the frame 1 is rotatably mounted on the outer circumference of the insulator 2, each rotary brush 26 enters between the pair of adjacent cap portions 2a, and the tips of the brush portions are the front and back surfaces of the pair of cap portions 2a. Contact each. The second rotating mechanism 27 as the second rotating means is mounted on the support plate 1b of the frame 1 and rotates all the rotating brushes 26 in a state of being in contact with the cap portion 2a of the insulator 2.

The plurality of rotating shafts 28 in the second rotating mechanism 27 are connected to the frame 1 via a pair of bearings 29.
Is rotatably supported by the support plate 1b at predetermined intervals. The rotary brush 2 is attached to the end of each rotary shaft 28.
6 is tiltably connected via an elastic coupling 30 whose axis can be bent. Even if the annular insulating fold portion 2b is projected on the back surface of the cap portion 2a of the insulator 2 and the outer surface of the cap portion 2a is complicatedly changed, the rotating brush 2
6 follows the shape change and contacts.

A plurality of gears 31 are fixed to the respective rotary shafts 28, and the six adjacent gears 31 are meshed with each other in order so that the six adjacent rotary shafts 28 rotate together as a set. The pair of second motors 32 that can switch the rotation direction are attached to the support plate 1b of the frame 1 through the plurality of spacers 34 by the plurality of bolts 33, and their motor shafts are included in the two sets of the rotation shafts 28. Middle rotation axis 28
It is connected to. And each rotating brush 26 is an insulator 2.
In the state of being in contact with the cap portion 2a, the rotating shafts 28 of each set are rotated by the second motor 32 via the gear 31, and the adjacent rotating brushes 26 of each set are alternately rotated in the opposite direction.

As shown in FIGS. 1, 2 and 4, a pair of cable covers 35 are attached to each of the mounting plates 15,
It covers the support portion of the spring 19 and the connecting portion of the connecting cable 24. The gear cover 36 is a support plate 1b of the frame 1.
Attached to each gear 31 and covers the outer periphery of the second motor 32.

The liquid tank 37 is attached to the outer surface of the gear cover 36, and the cleaning liquid is contained therein. The pair of spray nozzles 38 are arranged at predetermined intervals on the outer surface of the gear cover 36 so as to face the cap portion 2 a of the insulator 2, and are connected to the liquid tank 37. The air supply port 39 is formed in the support plate 1b of the frame 1 and is connected to each spray nozzle 38. Solenoid valve 4
0 is attached to the support arm 1a of the frame 1 and controls the supply of air to the air supply port 39 and the air cylinder 20. Then, by switching the solenoid valve 40, when air is supplied to each spray nozzle 38 through the air supply port 39, the cleaning liquid in the liquid tank 37 is sprayed from the spray nozzle 20 toward the insulator 2.

The control device 41 is disposed on the outer surface of the gear cover 36 and controls the operations of the first rotating mechanism 3, the second rotating mechanism 27 and the solenoid valve 40. And insulator 2
When removing the contaminants on the outer surface of the control device 41, the control device 41 switches the rotation direction of the first motor 8 of the first rotation mechanism 3 to rotate the frame 1 in the counterclockwise direction of FIG. 1 by about 180 degrees. Then, it is rotated about 360 degrees clockwise and again about 180 degrees counterclockwise. As a result, each rotating brush 26 is brought into contact with the same portion of the outer surface of the insulator 2 at least twice. Further, the control device 41 switches the rotation direction of the second motor 32 of the second rotation mechanism 27 in conjunction with the switching of the rotation direction of the first motor 8, and sets the rotation direction of each rotary brush 26 to the clockwise direction in FIG. Turn counterclockwise.

In this embodiment, as shown in FIG. 5, each drive roller 6 has a hollow roller body 42 formed of a rigid metal material such as aluminum and an outer peripheral surface of the roller body 42. The coating layer 43 is made of an elastic material having a high friction coefficient such as coated urethane rubber. As a result, the drive roller 6
In addition to reducing the weight, the risk of damaging the outer surface of the insulator 2 is prevented, and the risk of slippage in the contact state with the insulator 2 is also prevented. Further, like the drive roller 6, each gripping roller 13 is also composed of a roller body 42 and a coating layer 43.

Next, a method of removing the contaminants attached to the outer surface of the insulator by using the insulator contamination removing device constructed as described above will be described. When the stain removing device is used, as shown by the chain line in FIG. 1, the rotating levers 10 are respectively rotated to the outer positions by operating the operation handles 22 to open the support arms 1a of the frame 1. In this state, insert the insulator 2 between the support arms 1a,
Both drive rollers 6 at the central portion in the axial direction of the insulator 2,
The plurality of rotating brushes 26 are caused to enter between the cap portions 2a of the insulator 2 while being engaged between the pair of cap portions 2a adjacent to each other.

After that, when the operation of both operation handles 22 is released, the rotating lever 10 is rotated to the inner position by the urging force of the spring 19, and the both nipping rollers 13 are adjacent to each other at the position corresponding to the driving roller 6. A pair of caps 2a
Is engaged in between. In this state, switching of the solenoid valve 40 causes both air cylinders 20 to project, and the holding body 21 engages with the operation piece 10a of the rotating lever 10 as shown by the chain line in FIG. Are held in the engagement position. As a result, the frame 1 is rotatably mounted around the insulator 2.

When the frame 1 is mounted and the apparatus is started by operating a switch (not shown), the first
The drive roller 6 is rotated by the first motor 8 of the rotating mechanism 3, and the frame 1 is rotated along the outer peripheral surface of the insulator 2.
At the same time, the second motors 32 of the second rotating mechanism 27 rotate the rotating brushes 26 simultaneously via the gears 31. At this time, by switching the solenoid valve 40,
Air is supplied to the spray nozzle 38 from the air supply port 39, and the cleaning liquid in the liquid tank 37 is sprayed from the spray nozzle 20 toward the insulator 2. Thereby, the contaminants attached to the outer surface of each cap portion 2a of the insulator 2 can be effectively removed.

At the time of removing the contaminants, the rotation direction of the first motor 8 is switched by the control of the control device 41 so that the frame 1 first moves about 18 counterclockwise in FIG.
It is rotated 0 degrees, then rotated about 360 degrees clockwise and again about 180 degrees counterclockwise. As a result, at least two rotating brushes 26 are provided at the same position on the outer surface of the insulator 2.
By being contacted twice, the contaminants adhering to the outer surface of the insulator 2 are uniformly removed.

During removal of the contaminants, the control device 41 controls the rotation direction of the first motor 8 to switch the rotation direction of the second motor 32 to rotate the rotary brushes 26. The direction is changed to clockwise and counterclockwise in FIG. As a result, the rotating brush 26 comes into contact with the same portion of the outer surface of the insulator 2 at least once in different sliding directions. Therefore, when the rotary brush 26 is rotated clockwise in the figure, the tip of the brush portion effectively contacts the outer peripheral surface 2b-1 of the insulating fold portion 2b protruding on the back surface of the cap portion 2a, and the outer periphery thereof. Surface 2b-1
Contaminants are mainly removed. On the other hand, the rotating brush 26
Is rotated counterclockwise in the figure, the tip of the brush portion effectively contacts the inner peripheral surface 2b-2 of the insulating fold portion 2b, and the contaminants on the inner peripheral surface 2b-2 are focused. To be removed. Therefore, it is possible to surely prevent the uneven removal of the contaminants on the outer peripheral surface 2b-1 and the inner peripheral surface 2b-2 of the insulating fold portion 2b, and the contaminants attached to the outer surface of the insulator 2 can be reliably prevented. Can be removed evenly and uniformly.

Further, when removing the contaminants, the plurality of rotating brushes 26 arranged on the support plate 1b are connected to the gear 3.
Alternately in the opposite direction through 1. Therefore, the directions of the forces applied to the cap portions 2a of the insulator 2 by the rotation of the rotary brushes 26 are alternately reversed to cancel each other out. In other words, the brushes 26 come into contact with the cap portions 2a to thereby cancel the brushes. The reaction acting on 26, that is, the load torque is offset, and it is possible to prevent the moving force in one direction from acting on the entire device. Therefore, this device can always be stably rotated around the insulator 2, and a uniform cleaning operation can be always ensured.

Moreover, since each rotating brush 26 is connected to the rotating shaft 28 via the elastic coupling 30, even if the outer surface of the cap portion 2a of the insulator 2 is complicatedly changed by the insulating fold portion 2b or the like. The direction of the rotating brush 26 is easily changed, and the rotating brush 26 follows the shape change and surely contacts. Therefore, the contaminants can be effectively removed over the details of the outer surface of the insulator 2.

(Second Embodiment) Next, a second embodiment of the present invention will be described with reference to FIGS. 8 and 9. By the way, as shown in FIGS. 8 and 9, in the second embodiment, the supporting arm 1a of the frame 1 is 3 compared to the first embodiment.
A pair of support plates 1b is fixed between the ends of the adjacent support arms 1a. Then, a plurality of rotating brushes 26 are respectively provided on the support plates 1b, and the cap portion 2 of the insulator 2 is provided thereon.
They are arranged at the same pitch as the arrangement pitch of the cap portions 2a along the arrangement direction of a. When the frame 1 is rotatably mounted on the outer circumference of the insulator 2, the rotating brushes 26 on the support plates 1b are arranged one by one between the pair of adjacent cap portions 2a. . As a result, between the pair of adjacent cap portions 2a, the pair of rotating brushes 26 are arranged with each pair being separated from each other by approximately 180 degrees.

The second rotating mechanism 27 is mounted on each supporting plate 1b and rotates the corresponding rotating brushes 26 at the same time. In this case, adjacent rotary brushes 26 are alternately rotated in opposite directions on each support plate 1b, as in the first embodiment.

In the second embodiment, when the contaminants on the outer surface of the insulator 2 are removed, the first rotating mechanism 3 causes the frame 1 to rotate about 360 degrees either clockwise or counterclockwise in FIG. It is designed to be rotated. As a result, each rotating brush 26 on each support plate 1b is brought into contact with the same portion of the outer surface of the insulator 2 at least once. That is, the pair of rotating brushes 26 are brought into contact with the same portion of the outer surface of the insulator 2 at least once.

At this time, in this embodiment, as shown in FIG. 9, the pair of rotating brushes 26 arranged between the same cap portions 2a are mutually moved by the second rotating mechanism 27 on each supporting plate 1b. It is designed to rotate in the same direction (clockwise in the drawing). Thereby, between the same cap portions 2a,
The rotating brush 26 on one side (the left side in the drawing) effectively contacts the outer peripheral surface 2b-1 of the insulating fold portion 2b protruding on the back surface of the cap portion 2a, while the other end (the right side in the drawing)
The rotating brush 26 has a tip of an insulating fold 2
The inner peripheral surface 2b-2 of b is effectively contacted.

That is, in the second embodiment, while the frame 1 is rotating, the pair of rotating brushes 26 rotate between the same cap portions 2a so that the sliding directions with respect to the outer surface of the insulator 2 are different from each other. To be done. As a result, the rotating brush 26 comes into contact with the same portion of the outer surface of the insulator 2 at least once in different sliding directions.

Therefore, also in the second embodiment, similarly to the first embodiment, the outer peripheral surface 2b-1 and the inner peripheral surface 2b-2 of the insulating fold portion 2b projecting on the back surface of the cap portion 2a of the insulator 2 are formed.
It is possible to effectively remove the contaminants on any of the peripheral surfaces, and it is possible to reliably prevent uneven removal of the contaminants on both the inner and outer peripheral surfaces of the insulating fold portion 2b.

Further, in the second embodiment, the rotary brush 26
Are arranged one by one between the pair of adjacent cap portions 2a of the insulator 2. Therefore, while rotating the frame 1 once around the insulator 2 without changing the rotating direction of the rotating brushes 26, one rotating brush 26 removes the contaminants on the outer peripheral surface 2b-1 of the insulating fold portion 2b. The rotating brush 26 on the other side can remove the contaminants on the inner peripheral surface 2b-2 of the insulating fold portion 2b. Therefore, unlike the first embodiment, it is not necessary to switch the rotation directions of the frame 1 and the rotating brush 26 at the time of removing the contaminants, and the control for those rotations becomes simple. The other operational effects of the second embodiment are the same as those of the first embodiment.

The present invention is not limited to the configurations of the above-mentioned embodiments, but can be embodied in the following modes. (1) By interposing a friction clutch between each rotary brush 26 and the gear 31 of its shaft, when an excessive torque against the rotation acts on each rotary brush 26, the sliding action of the friction clutch causes The rotary brush 26 is configured to be allowed to stop. According to this structure, when a foreign matter enters between the rotating brush 26 and the insulator 2, the rotating brush 26 is prevented from rotating unnecessarily, and the rotating brush 26 and the insulator 2 are prevented from being damaged.

(2) To increase the number of rotations of the stain removing device around the insulator 2 as compared with the above embodiment. (3) In the second rotation mechanism 27, one motor 32
The rotating brush 26 is configured to be rotated by.

(4) In the second embodiment, the insulator 2
The arrangement of the rotary brush 26 with respect to the above is as shown in FIG. In this case, the pair of rotating brushes 26 disposed between the pair of adjacent cap portions 2a of the insulator 2 are used.
May be rotated in mutually opposite directions.

[0049]

EFFECTS OF THE INVENTION Since the present invention is configured as described above, it has the following effects. Claim 1
According to the invention of claim 3 and claim 7, uneven removal of contaminants does not occur on the outer peripheral surface and the inner peripheral surface of the insulating fold projecting on the back surface of the cap portion of the insulator, and adheres to the outer surface of the insulator. It is possible to uniformly remove the polluted material.

According to the invention of claim 4, even in an insulator in which a plurality of cap portions are arranged,
It is possible to efficiently remove contaminants adhering to the outer surface of each cap portion at the same time.

According to the fifth aspect of the invention, the device can be constantly rotated around the insulator in a stable manner, and the contaminants adhering to the outer surface of each cap portion can be uniformly removed.

According to the sixth aspect of the invention, the brush reliably contacts the outer surface of the insulator by following a complicated shape change,
It is possible to effectively remove contaminants over the details of the outer surface of the insulator.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view showing a first embodiment of an insulator fouling removing device embodying the present invention.

FIG. 2 is a side view of the stain removing device.

FIG. 3 is an enlarged sectional view taken along line III-III in FIG.

FIG. 4 is an enlarged sectional view taken along line IV-IV in FIG.

5 is an enlarged cross-sectional view taken along the line VV of FIG.

FIG. 6 is a partial cross-sectional view showing an enlarged cable connection configuration between a rotating lever for a nipping roller and an operation handle for releasing.

7 is a partial enlarged cross-sectional view taken along line VII-VII of FIG.

FIG. 8 is a schematic plan view showing a second embodiment of the stain removing device.

FIG. 9 is a schematic front view showing an arrangement configuration of a rotating brush with respect to an insulator.

FIG. 10 is a schematic plan view showing another example of the arrangement configuration of the rotating brushes in the second embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Frame, 2 ... Insulator, 2a ... Shade part, 2b ... Insulation fold part, 3 ... 1st rotation mechanism as a 1st rotation means, 6 ... Drive roller, 8 ... 1st motor, 10 ... Rotation lever, 13 ... pinching roller, 19 ... spring, 20 ... air cylinder, 21 ... holding body, 22 ... release operation handle, 26 ... rotating brush, 27 ... second rotating mechanism as second rotating means, 28 ...
Rotating shaft, 30 ... Elastic coupling, 31 ... Gear, 32 ...
Second motor, 41 ... Control device.

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Yukitaka Kamiya 1-3-3 Uchisaiwaicho, Chiyoda-ku, Tokyo Within Tokyo Electric Power Company (72) Inventor Takayoshi Guri 2-56 Sudamachi, Mizuho-ku, Nagoya Co., Ltd. (72) Inventor Toshiaki Suzuki 2-6, Sudamachi, Mizuho-ku, Nagoya

Claims (7)

[Claims] 1. A frame rotatably mounted around an insulator, a brush rotatably supported on the frame so as to come into contact with the outer surface of the insulator, and the brush is provided at least at the same position on the outer surface of the insulator. An insulator fouling removal device comprising: first rotating means for rotating the frame so as to make contact once and second rotating means for rotating the brush while changing the rotation direction of the frame during rotation of the frame. 2. A frame rotatably mounted around an insulator, brushes rotatably supported on the frame so as to be arranged between a pair of adjacent cap portions of the insulator, and each brush being an insulator. First rotating means for rotating the frame so as to come into contact with the same location on the outer surface of the insulator at least once, and for rotating each brush so that the sliding directions of the brushes against the outer surface of the insulator are different from each other during rotation of the frame. An insulator fouling removal device having two rotation means. 3. The first rotating means is configured to rotate the frame first about one half rotation in one direction, then about one rotation in the other direction, and again about half rotation in one direction. The contamination removal device for insulators according to claim 1, wherein the rotation direction of the brush is changed in association with the change of the rotation direction of the first rotation means. 4. The contamination removing device for an insulator according to claim 1, wherein a plurality of the brushes are arranged at the same pitch as the arrangement pitch of the cap portions along the arrangement direction of the cap portions of the insulator. 5. The plurality of brushes arranged along the arrangement direction of the cap portion of the insulator are connected so that the adjacent brushes are alternately rotated in the opposite direction by the second rotating means. The insulator fouling removal device described in 1. 6. The brush is connected to the rotating shaft of the second rotating means via an elastic coupling.
Alternatively, the insulator fouling removing device according to the item 2. 7. A frame supporting a brush is rotatably mounted around an insulator, and the frame and the brush are rotated so that the brush comes into contact with the same portion of the outer surface of the insulator at least once in different sliding directions. A method for removing stains on an insulator, which removes stains attached to the outer surface of the insulator.