JP2003151389A - Insulator cleaning device - Google Patents

Abstract

(57) [Problem] To provide an automatic insulator cleaning device which is compact enough to be held by an operator and which is free from electric shock. SOLUTION: An insulative pipe-like support rod 1 has a distal end portion,
An arc-shaped fixed frame 5 positioned at the center of the insulator 4 and a movable frame 6 rotating around the insulator 4 are provided. 9 is converted into rotational motion by meshing between a rack 11 provided on the drive shaft 9 and a pinion 14 of a drive rotary shaft 13, and the rotation is transmitted to two driven rotary shafts 16 by a timing belt 18.
The gear 26 provided on each driven rotary shaft 16 is meshed with the tooth profile 25 provided on the inner peripheral surface of the movable frame 6, so that the cleaning brush can be designed in a compact design without any conductors along the support bar 1. The movable frame 6 to which is attached is made rotatable, so that the worker can efficiently clean the insulator 4 by holding the support rod 1 without risk of electric shock.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insulator cleaning device used for cleaning an insulator cap portion.

[0002]

2. Description of the Related Art Insulators attached to power transmission towers and substations are cleaned at appropriate intervals to remove contaminants attached to the upper and lower surfaces of the cap. Since this cleaning work is performed live, and the insulator is also installed at a position where people cannot easily approach it, an insulator cleaning device that is manually operated by an operator has an insulating material to prevent the operator from receiving an electric shock. It is attached to the tip of the support rod.

In many insulator cleaning devices, the upper and lower cleaning brushes are pressed against the upper and lower surfaces of the cap portion of the insulator and manually slid in the circumferential direction, but in order to reduce the burden on the operator, the cleaning brush is used. There is also an automatic type that is provided with a drive source for sliding the cap in the circumferential direction of the cap.

Examples of automatic insulator cleaning devices of this type include, for example, JP-A-63-39409 and JP-A-5-28.
There is one described in Japanese Patent No. 2948.

In the former method, a cleaning mechanism which moves forward and backward with respect to the insulator is laid on a base, and upper and lower cleaning brushes are connected to the cleaning mechanism by a pair of cleaning arms having pin joints rotatable at both ends. The cleaning brush is slid in the circumferential direction of the cap portion by the forward and backward movements.

In the latter, a turntable that rotates around a central axis of an insulator is attached to a base unit by a motor, a cleaning brush that advances and retreats toward the center of the insulator is supported on the turntable, and the cleaning brush is covered. It is designed to slide in the circumferential direction of the part. Also, an example is described in which the cleaning brush is a rotating brush and the rotation shaft thereof is also driven by a motor.

[0007]

All of the above-mentioned conventional automatic insulator cleaning devices are large-scaled ones in which the drive mechanism of the cleaning brush is attached to the base, and like the conventional manual-type one, the work is performed. It cannot be attached to a support member such as a support bar that a person can carry. Therefore, it takes a lot of time to set up the cleaning work, and it is difficult to move from the insulator to be cleaned to the insulator.

Further, in the case of using a motor as a drive source of the cleaning brush, it is necessary to wire the electric cable, which is a conductor, along the supporting member. Therefore, even if the supporting member of the cleaning device is made of an insulating material, If an operator approaches the operation part of the cleaning device, there is a risk of electric shock. To eliminate the risk of electric shock, a battery for driving a motor may be provided at the tip of the support member, but the device becomes bulky and the workability deteriorates.

Therefore, an object of the present invention is to provide an automatic insulator cleaning device which is compact so that an operator can hold it and is free from the risk of electric shock.

[0010]

In order to solve the above-mentioned problems, the insulator cleaning apparatus of the present invention has a notch portion for positioning an insulator on the outer periphery of the insulator with its central axis aligned. An arc-shaped fixed frame body having an arc-shaped fixed frame body, which is arranged concentrically with the fixed frame body, is rotated around the insulator while being guided by the fixed frame body, and similarly has an arc-shaped cutout portion for inserting the insulator. A movable frame and a drive source for rotating the movable frame are provided at the tip of an insulative support member, and the movable frame is provided with upper and lower cleaning brushes pressed against the upper and lower surfaces of the cap portion of the insulator. As the air source for driving the driving source by air, a configuration is adopted in which the upper and lower cleaning brushes are slid in the circumferential direction of the upper and lower surfaces of the cap portion of the insulator.

That is, at the tip of the insulating support member,
An arc-shaped fixed frame body positioned on the central axis of the insulator and a movable frame body which is guided by the fixed frame body and rotates around the insulator are provided, and upper and lower cleaning brushes are attached to the movable frame body. By rotating with an air drive source, the cleaning brush has a compact design, and the cleaning brush can automatically slide in the circumferential direction of the upper and lower surfaces of the cap portion of the insulator without the conductor extending along the supporting member. . An air cylinder or an air motor can be used as the air drive source.

By using an air cylinder as the air drive source and providing a power transmission mechanism for converting the linear motion of the air cylinder into the rotary motion of the movable frame, an air drive source with high air efficiency can be obtained.

As the power transmission mechanism, a linear motion of the air cylinder is converted into a rotary motion of a drive rotary shaft by a rack and a pinion, and the rotary motion of the drive rotary shaft is driven by a driven rotary shaft provided in the fixed frame body. To convert the rotational movement of the driven rotary shaft into the rotational movement of the movable frame body by meshing a gear provided on the driven rotary shaft with a tooth profile provided along the arc of the movable frame body. Can be adopted.

By providing the driven rotary shaft at a plurality of locations along the arc of the fixed frame, the tooth profile provided on the arcuate movable frame having the cutout portion is the gear of one driven rotary shaft. Even if the engagement with the gear is disengaged, the engagement with the gear of the other driven rotary shaft is maintained, so the movable frame can be rotated 360 ° around the insulator, and the entire upper and lower surfaces of the cap portion of the insulator can be rotated. The cleaning brush can be slid.

By mounting the upper and lower cleaning brushes on the movable frame in a plurality of stages in the vertical direction, it is possible to simultaneously clean a plurality of insulators connected to each other in the axial direction, thereby improving work efficiency.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to FIGS. 1 to 6 show a first embodiment. As shown in FIG. 1, this insulator cleaning device includes an air cylinder 2 incorporated at the tip of an insulating pipe-shaped support rod 1 as a support member that an operator can hold, and a support rod 1 via a support fitting 3. Is attached to the tip end of the insulator 4 and has an arc-shaped fixed frame body 5 having a notch for inserting the insulator 4 in the center, and a notch for similarly inserting the insulator 4 around the insulator 4. The movable frame 6 is basically composed of a rotating arc-shaped movable frame body 6, and upper and lower cleaning brushes 7a and 7b are pressed against upper and lower surfaces of a cap portion of an insulator 4 which will be described later.
It can be attached to. Air cylinder 2
Is operated by a switch 8 provided at the base end of the support rod 1, and the rod 9 has two limit switches 10a, 1a.
It reciprocates between 0b.

As shown in FIGS. 2 and 3, a rack 11 is provided on the rod 9 of the air cylinder 2, and a drive rotary shaft 13 is supported on the support fitting 3 via a one-way clutch 12. The pinion 14 meshes with the rack 11. Therefore, only when the rod 9 moves forward to the right in FIG. 2, the drive rotary shaft 13 intermittently rotates clockwise,
When the rod 9 moves backward to the left, the drive rotary shaft 13 does not rotate. A pulley 15 is provided on the drive rotary shaft 13, and is connected by a timing belt 18 to a pulley 17 provided on each driven rotary shaft 16 axially supported at two positions in the circumferential direction of the fixed frame body 5.

As shown in FIGS. 2 and 4, the fixed frame 5 is provided with three arm members 19a, 19b protruding toward the inner periphery toward the center thereof. A nipping roller 22 having a V-shaped cross section for nipping the annular V projection 21 of the cap 20 that vertically connects the insulator 4 is attached to the tips of 19a and 19b. Each of the sandwiching rollers 22 of the two arm members 19b projecting to the left and right is attached such that the shaft thereof is fitted into the elongated hole 23 so that the radial position can be adjusted, and the sandwiching roller 22 on the left side of these is a coil spring. Arm member 1 at 24
It is biased toward the tip side of 9b. Therefore, by inserting the insulator 4 from the cutout portion of the fixed frame body 5 and pressing the three holding rollers 22 against the annular V projection 21 of the cap 20, the fixed frame body 5 is aligned with the central axis of the insulator 4. It can be easily positioned.

A tooth profile 25 is provided on the inner peripheral surface of the movable frame 6 and meshes with a gear 26 provided on each driven rotary shaft 16. Further, on the lower surface side of the fixed frame body 5, an outward guide surface 27 is provided along the arc of the fixed frame body 5.
A plurality of guide rollers 28 mounted along the circular arc of the movable frame body 6 are in rolling contact with the guide roller 7.

Therefore, the movable frame 6 is composed of the drive rotary shaft 1
As shown in FIG. 5, the intermittent rotation of 3 clockwise causes each guide roller 28 to guide the guide surface 27 of the fixed frame body 5 to intermittently rotate clockwise around the central axis of the insulator 4.
At this time, even if the tooth profile 25 of the movable frame body 6 disengages from the meshing with the gear 26 of the one driven rotary shaft 16 at the cutout portion, the meshing with the gear 26 of the other driven rotary shaft 16 is maintained. As a result, the movable frame 6 is rotated around the insulator 4 by 360.
° It can be rotated and the upper and lower cleaning brushes 7 will be described later.
It is possible to slide a and 7b on the entire circumference of the upper and lower surfaces of the cap portion of the insulator 4.

As shown in FIGS. 2 and 4, on the inner peripheral side of the movable frame body 6, upper and lower brushes having curved portions for avoiding the upper and lower caps 20 of the insulator 4 inserted in the centers thereof, respectively. The mounting plates 29a and 29b are provided across. In this embodiment, the upper and lower brush mounting plates 29a,
Although the transfer position of 29b is shifted in parallel in the horizontal direction, it may be transferred at the same horizontal position. Further, the delivery direction does not necessarily have to be parallel.

The upper brush mounting plate 29a is also curved in the vertical direction along the upper surface of the cap portion of the insulator 4, and the upper cleaning brush 7a is mounted on the lower surface thereof. The upper cleaning brush 7a is obtained by randomly winding a non-woven tape to which an abrasive is attached in a vine shape and hardening it with an adhesive. As shown in FIG. 6, the upper brush mounting plate 29a has both ends fixed to bolts 30 standing on the lower surface of the movable frame 6 with nuts.

The lower brush mounting plate 29b is formed flat and the lower cleaning brush 7b is mounted on the upper surface thereof. This lower cleaning brush 7b is a bundle of abrasive-containing nylon fibers, and a plurality of fiber bundles are attached to the lower brush mounting plate 29b so that the tips of these fibers follow the uneven shape of the lower surface of the cap portion of the insulator 4. Is planted on the upper surface of.

Guide rings 31 are attached to both ends of the lower brush mounting plate 29b, and the guide rings 31 are slidably fitted on columns 32 standing on the lower surface of the movable frame 6 to form the lower cleaning brush 7b. Is biased upward by the coil spring 33 so as to be pressed against the lower surface of the cap portion. A spacer ring 34 is also fitted to each of the columns 32, and when the cap portion of the insulator 4 is inserted between the upper and lower cleaning brushes 7a and 7b, the lower brush mounting plate 29b and the upper brush mounting plate 29a are spaced from each other by a predetermined distance. Can be held.

FIG. 7 shows a second embodiment. The insulator cleaning device has the same basic configuration as that of the first embodiment, and the upper and lower cleaning brushes 7a and 7b are attached to the movable frame 6
The only difference is that it is attached in two steps in the vertical direction.

In this embodiment, two bolts 30 and columns 32 which are erected on the lower surface of the movable frame 6 are formed long, and the upper and lower cleaning brushes 7a are respectively attached to these bolts 30 and columns 32. , 7b are attached to the upper and lower brush attachment plates 29a, 29b in two steps. The method of attaching the brush mounting plates 29a and 29b to the bolts 30 and the columns 32 is the same as that of the first embodiment, and the brush mounting plate 2 on the lower stage side is provided in the middle of the columns 32.
The only difference is that a stopper 35 for 9b is attached.

Therefore, in this insulator cleaning device, the upper and lower brush mounting plates 29a and 29b and the cleaning brushes 7a and 7b are used.
It is possible to simultaneously clean the two upper and lower insulators 4 connected to each other only by adding, and since the weight increase due to these additions is small, the operator can also carry and operate this insulator cleaning device. The upper and lower cleaning brushes 7a and 7b may be attached in three or more stages as required.

In each of the above-described embodiments, the air cylinder is used as the drive source for rotating the movable frame body, but an air motor may be used. In this case, the output shaft of the air motor can be directly used as the drive rotation shaft, and the power transmission mechanism can be simplified, but the air efficiency is reduced.

Further, in each of the above-described embodiments, the tooth profile is provided on the inner peripheral side of the movable frame body, but the tooth profile may be provided on the outer peripheral side so that the gear of the driven rotary shaft can be meshed from the outer peripheral side. In this case, a gear that meshes with the tooth profile of the movable frame can be directly provided on the drive rotary shaft.

Further, the upper and lower cleaning brushes are not limited to those of the embodiment, and any shape can be used so as to be along the upper and lower surfaces of the cap portion of the insulator.

[0031]

As described above, according to the insulator cleaning device of the present invention, an arcuate fixed frame body positioned at the center axis of the insulator is provided at the tip of the insulating support member, and the fixed frame body is guided. By providing a movable frame body that is rotated around the insulator, and by attaching the upper and lower cleaning brushes to the movable frame body and rotating the movable frame body by the air drive source, a compact design and a conductive member on the support member are provided. Since the cleaning brush can automatically slide on the upper and lower surfaces of the cap portion of the insulator without being placed along it, an operator can efficiently carry out the cleaning work of the insulator without the risk of electric shock.

[Brief description of drawings]

FIG. 1 is a plan view showing an insulator cleaning device according to a first embodiment.

FIG. 2 is a plan view showing an enlarged main part of FIG.

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

FIG. 4 is a vertical sectional view of FIG.

5 is a plan view showing a state in which the movable frame body of FIG. 2 is rotated.

6 is a sectional view taken along line VI-VI of FIG.

FIG. 7 is a partially cutaway longitudinal sectional view showing an enlarged main part of an insulator cleaning device according to a second embodiment.

[Explanation of symbols]

1 support rod 2 Air cylinder 3 Support bracket 4 insulator 5 fixed frame 6 movable frame 7a, 7b Cleaning brush 8 switches 9 rod 10a, 10b Limit switch 11 racks 12 one-way clutch 13 Drive rotation axis 14 pinion 15 pulley 16 Driven rotary shaft 17 pulley 18 Timing belt 19a, 19b arm member 20 cap 21 annular V protrusion 22 nip roller 23 long hole 24 coil spring 25 tooth profile 26 gears 27 guideway 28 Guide roller 29a, 29b Brush mounting plate 30 volts 31 Information ring 32 props 33 coil spring 34 Spacer ring 35 Stopper

Claims (5)

[Claims] 1. An arc-shaped fixed frame body, which is positioned with its center axis aligned with the outer circumference of the insulator and has a notch for inserting the insulator at the center thereof, and is arranged concentrically with this fixed frame body and fixed. Insulating support of an arcuate movable frame body that is guided by the frame body and rotates around the insulator, and also has an arcuate movable frame body having a notch portion for inserting the insulator body, and a drive source that rotates the movable frame body. The upper and lower cleaning brushes, which are provided at the tip of the member and are pressed against the upper and lower surfaces of the insulator portion of the insulator, are attached to the movable frame body, and the upper and lower cleaning brushes are used as air drive sources that operate by air. An insulator cleaning device that slides in the circumferential direction on the upper and lower surfaces of the cap portion. 2. The insulator cleaning device according to claim 1, wherein the air drive source is an air cylinder, and a power transmission mechanism for converting a linear motion of the air cylinder into a rotary motion of the movable frame is provided. 3. The power transmission mechanism converts the linear motion of the air cylinder into a rotary motion of a drive rotary shaft by means of a rack and a pinion, and the rotary motion of the drive rotary shaft is driven to rotate by the fixed frame body. The rotary motion of the driven rotary shaft is converted into the rotary motion of the movable frame by the meshing of a gear provided on the driven rotary shaft and a tooth profile provided along the arc of the movable frame. The insulator cleaning device according to claim 2, which is a thing. 4. The insulator cleaning device according to claim 3, wherein the driven rotary shaft is provided at a plurality of positions along an arc of the fixed frame body. 5. The insulator cleaning device according to claim 1, wherein the upper and lower cleaning brushes are attached to the movable frame in a plurality of stages in a vertical direction.