JPH07119784B2 - Deterioration condition inspection tool for insulators - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insulator deterioration condition inspection tool used for inspecting the state of rust formed on an insulator pin fitting to determine the deterioration condition of the insulator.

[0002]

2. Description of the Related Art In insulators that support power lines, after installation, the pin fittings gradually rust due to natural corrosion and electrolytic corrosion due to leakage current, and the tensile strength decreases as the rust progresses.
Eventually, there is a possibility of a fracture accident. In order to prevent this rupture accident of the insulator and replace the insulator, it is necessary to know the corrosion state of the pin fitting. However, in the suspension insulator series, as shown in FIG. 4, the pin metal fitting P of the insulator is located in the lower central portion of the insulator body T, and the angle allowing visual recognition from the outside is within the range of θ. Since it was limited, it was almost impossible to visually confirm the corrosion state of the pin metal fittings while suspended from the arm of the tower. In addition, in the tension insulator series, since the cap metal fittings are arranged on the steel tower side,
It was impossible to see from the tower. For this reason, in the past, when the power was off, the insulators to be inspected were removed from the tower and placed on the ground to check the corrosion of the pin fittings.

[0003]

However, the work of removing the insulator to be inspected from the steel tower or hoisting it to the ground not only has poor workability, but also inspects the insulators suspended on all steel towers while the power is off. I couldn't. This invention
An object of the present invention is to provide an insulator deterioration condition inspection tool capable of inspecting the state of rust generated on an insulator pin metal fitting while the insulator is being erected on a steel tower.

[0004]

In order to solve the above problems, the present invention provides an operating member, an engaging member fixed to the tip of the operating member, and an insulator in a state of being engaged and fixed by the engaging member. This is a tool for inspecting the deterioration state of an insulator, which is composed of a photographing means mounting portion for mounting the photographing means at a position where the pin fitting can be photographed.

[0005]

Since the engaging member is provided at the tip of the operating member, the engaging member can be engaged with the insulator from the position of the steel tower in the vicinity of the suspended insulator. Further, when the engagement member is engaged and fixed to the insulator, the photographing means attached to the photographing means mounting portion is arranged at a predetermined position where the pin metal fitting located at the center of the insulator body can be photographed. Then, by operating the photographing means, the position of the pin fitting can be photographed.

[0006]

EXAMPLE 1 Example 1 embodying the present invention will be described below with reference to FIGS. As shown in FIGS. 1 and 4, the insulator deterioration state inspection tool in the first embodiment shows an example of an inspection tool for inspecting a suspended suspension insulator. The inspection member is fixed to the operation member 1 and the tip of the operation member 1 and suspended. It is composed of an engaging member 2 that engages with the insulator series S, and a photographing means mounting portion 3 for mounting the photographing means K.

The operating member 1 is expandable and contractable in the longitudinal direction by a hollow cylindrical double pipe, the length is adjusted according to the distance between the steel tower and the suspended insulator, and the operating member 1 is tightened and fixed by a tightening nut 4. ing. Further, the operating member 1 is formed of an insulating material such as synthetic resin so as to prevent an electric shock accident even if the tip end is accidentally brought into contact with the power transmission line. On the base end side of the operation member 1, a cap 5 having an insertion hole formed in the center is attached and fixed by a pin 6. The cap 5 has a thick wall so that the weight of the inspection tool as a whole is balanced. In addition, a carrying band 7 is attached to the center of the operation member 1 for the convenience of carrying the inspection tool. A connecting plate 8 is rotatably attached to the tip of the operating member 1 by a pin 9, and the photographing means attaching portion 3 is attached to the connecting plate 8.
Is fixed.

As shown in FIGS. 2 and 3, this embodiment 1
An example of a substantially rectangular electronic still camera K is shown as the photographing means in FIG.
And a lens unit 11 and a shutter 12.
The photographing means mounting portion 3 for accommodating and mounting the electronic still camera K has four frame plates 15 between a substrate 13 connected to the connecting plate 8 and a support plate 14 mounted substantially parallel to the substrate 13. It is formed in a box shape surrounded by. The frame plate 1 on the front side (right side in FIG. 2) of the photographing means mounting portion 3
5 is openable and closable so that the electronic still camera K can be stored and taken out. The frame plate 15 is provided with a lens hole 16 at a position corresponding to the lens portion 11 of the electronic still camera K when the electronic still camera K is housed, so that the electronic still camera K can photograph the front direction. An operation hole 17 for operating the electronic still camera K is provided in a portion of the substrate 13 in which the shutter 12 is housed, and the shutter 12 can be operated by a shutter operation mechanism 18.

The shutter actuating mechanism 18 is provided with an operating wire 19 inserted through the operating member 1 from its base end portion to its distal end portion, and a disc-shaped support roller 20 for supporting the distal end side of the operating wire 19. And a shutter pressing piece 21 connected to the operation wire 19. Support roller 20
Is rotatably supported by a roller supporting portion 22 provided upright on the substrate 13, and a groove 23 for winding and supporting the operation wire 19 is formed on the peripheral surface thereof. The proximal end of the operation wire 19 wound around and supported by the support roller 20 is connected to an operation chain 31 made of an insulating material.

The shutter pressing piece 21 has a substrate 1 on one side thereof.
To the support plate 25, which is attached and fixed to the shaft 3 by screws 24,
The shutter pressing portion 27 formed on the other side is arranged so as to face the inside of the operation hole 17 while being rotatably connected by 6. The shutter pressing piece 21 is biased by a tension spring 28 mounted between the frame plates 15, and the shutter pressing portion 27 is held in a retracted position where the shutter 12 is not pressed.

As shown in FIGS. 1 and 3, the support plate 14 extends to the front of the substrate 12. This board 1
Two through-holes 29 are formed in the center of 4 for weight reduction. The plate-shaped engaging member 2 is connected and fixed to the tip portion of the support plate 14 by a connecting fitting 30 bent in a V shape, and forms a connection angle α with the support plate 14. A U-shaped portion 32, which is a U-shaped cutout, is formed at the tip of the engaging member 2, and an insulator main body 41 of the insulator connected to one lower portion of the insulator T to be inspected as shown in FIG. A fitting member 35 made of a thin plate is fitted so as to closely fit and engage with an annular recess 43 formed between the lower part of the cap fitting 42 to be capped with this.
Are fixed by pins 33 along the U-shaped portion 32. Then, the center line L of the angle θ at which the pin fitting P can be visually recognized
A connection angle α between the engaging member 2 and the support plate 14 is determined so that the lens portion 11 of the electronic still camera K is located above. Further, the engaging member 2 is provided with two through holes 34 for reducing the weight of the inspection tool, like the support plate 14.

Next, the operation of the insulator deterioration condition check tool of the first embodiment constructed as described above will be described.
When inspecting the progress status of rust on the pin metal fitting P of the insulator T to be inspected by the insulator deterioration condition inspection tool of the first embodiment, the electronic steel camera K, which is pre-exposed and focused, is attached to the photographing means. It is stored and fixed in the section 3. Then, the photographer climbs below the arm of the steel tower, extends the operation member 1 to the suspension insulator series S side as shown in FIG. 4, and attaches the engaging member 2 one step below the insulator T to be inspected. The concave portion 43 is fitted and engaged. Since the engaging member 2 is formed in a U shape, it is engaged and fixed orthogonally to the up-down direction of the insulator, and the inspection tool is locked without rattling. Since the support plate 14 is connected to the engaging member 2 at the connection angle α, the electronic still camera K is locked with a predetermined distance on the center line L of the angle θ at which the pin fitting P can be photographed.

When the operation chain 31 is pulled in the locked state,
As shown by the chain double-dashed line in FIG. 2, the shutter pressing piece 21 tilts against the biasing force of the tension spring 28, and the shutter pressing portion 2
The shutter 12 is pressed by 7 and the pin fitting P is photographed. In the first embodiment, since the electronic still camera K is adopted as the photographing means, the trouble of developing the film can be saved, and after the photographing is finished, the photographer can judge the deterioration condition of the insulator from the rust condition of the pin fitting P. The image can be immediately given to the judge, and the judge can judge the deterioration condition of the insulator by the image of the photograph. Then, based on the deterioration status of the insulator,
You can know when to replace the insulator.

In addition, since the electronic still camera K is securely fixed and the distance to the inspected insulator T is determined in a state where the electronic still camera K is locked to the insulator, even if the focus is not adjusted one by one, a pre-focused image is taken. it can. Further, since the operating member 1 is formed of an insulating material, even if the engaging member 2 or the like is accidentally brought into contact with the electric wire during power transmission,
It can be inspected without causing an electric shock accident. [Second Embodiment] Next, a second embodiment of the present invention will be described with reference to FIGS.

The inspection tool for the deterioration state of the insulator in the second embodiment shows an example of an inspection tool for inspecting the tension-resistant suspension insulator,
Since the mounting structure of the image capturing means mounting portion 3 is different from that of the first embodiment, the different portions will be described and the description of the common portions will be omitted. Since the cap metal fitting 42 is arranged on the steel tower side in the tension insulator string R, the pin metal fitting P to be photographed is not visible at all from the steel tower. Therefore, as shown in FIG. 5, the lens hole 11 provided in the frame plate 15 of the photographing means mounting portion 3 is arranged so as to face the operation member 1 in a substantially front direction.

As shown in FIG. 6, the operating member 1 is rotatably connected to the connecting member 8 by a pin 9, and a roller 36 is rotatably attached to the pin 9 with respect to the pin 9. . The shutter pressing piece 21 is arranged on an extension line of the operation member 1 in the longitudinal direction, and is rotatably connected to the shaft 26. The operation wire 19 is inserted into the operation member 1, is turned into a dogleg shape through the roller 36, and has its tip end connected to the shutter pressing piece 21.

When inspecting the progress of rust in the pin fitting P with the insulator deterioration condition inspection tool of the embodiment 2 constructed as described above, the engaging member 2 is seen one step from the inspected insulator T when viewed from the steel tower. It is fitted into the annular recess 43 of the insulator which is separated, and is engaged and fixed by the fitting member 35. When you pull the operation chain (not shown) in this fixed state, the tension spring 2
The shutter pressing piece 21 tilts against the biasing force of the shutter 8 to press the shutter 12, and the pin fitting P of the insulator T to be inspected is photographed.

Also in this second embodiment, since the inspection tool is fixed to the insulator by the fitting member 35 and does not rattle, the pin fitting P can be reliably photographed even if the pin fitting P is not visible to the photographer. . The present invention is not limited to the first and second embodiments described above, and may be configured as follows, for example. (1) Although the example in which the lens hole 16 is provided in the frame plate 15 is shown,
A transparent plate may be used instead of providing the lens hole 16. (2) Although the example in which the electronic still camera is used as the photographing unit K is shown, a still camera or a video camera may be used instead of the electronic still camera. (3) Operation chain 3 as means for operating the photographing means K
Although the example in which the operation is performed with the operation chain No. 1 is shown, a remote control mechanism or the like may be used instead of the operation chain 31 to perform the remote operation. By doing so, the shutter operating mechanism 18 can be eliminated, and the operating member 1 need not be cylindrical, and the structure of the inspection tool can be simplified.

[0019]

As described above in detail, according to the present invention, the operating member, the engaging member fixed to the distal end of the operating member and engaged with the insulator, and the insulator in the state of being engaged and fixed by the engaging member. It is excellent because it can be inspected for rust condition on the pin metal fittings of the insulator while the insulator is still installed on the steel tower by providing the photographing means mounting part for mounting the photographing means at the position where the pin metal fitting can be photographed. Produce an effect.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view showing a first embodiment of the present invention.

FIG. 2 is a partial sectional view of the same.

FIG. 3 is a partially cutaway enlarged plan view similarly seen from the direction A.

FIG. 4 is a partially cutaway front view of the same.

FIG. 5 is a partially cutaway front view showing a second embodiment.

FIG. 6 is a partially cutaway enlarged plan view similarly seen from the B direction.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Operation member 2 Engagement member 3 Imaging means mounting portion K Electronic steel camera as imaging means P pin metal fitting

Claims (1)

[Claims] 1. An operating member (1), an engaging member (2) fixed to the tip of the operating member (1), and the engaging member (2).
An insulator deterioration state inspection tool comprising an image capturing means mounting portion (3) for attaching the image capturing means (K) to a position where the pin metal fitting (P) of the insulator can be captured while being fixedly engaged with the insulator.