JPH02155409A - Self-advancing inspector for overhead wire - Google Patents

Abstract

PURPOSE:To enable the damage inspection of a transmission line, a damper and a snowless ring by providing a generator, a motor, driving wheels, a reflector with two-sided mirror reflecting a wire viewed diagonally from the upper left and right and a light-screening hood and by providing a machine frame with a camera-integrated VTR. CONSTITUTION:When an engine-generator 1 is operated, a motor 3 rotates to drive driving wheels 4, 4 so that an inspector travels on a transmission line. The operation of a camera-integrated VTR 10 enables imaging and recording directly the under surface of said transmission line and simultaneously also the surface thereof viewed diagonally from the upper left and right reflected in a reflector 8 with a two-sided mirror arranged above said line. Each of said wheels 4, 4 is formed by a large circular face 4a surpassing a line-twist preventing damper and a snow coating preventing snowless ring and a small circular face 4b to be fitted to said line. Thus, any damage of said transmission line, damper and snowless ring can be inspected in detail.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention is applicable to damage inspection and transmission of overhead power transmission lines, lightning ground lines, optical fiber composite ground lines, or overhead distribution lines between utility poles. This invention relates to a self-propelled inspection device for overhead power lines that inspects snow rings installed on power lines every few centimeters to prevent snow accumulation and dampers installed approximately every 100 meters to prevent twisting. The explanation will be given below using a power transmission line as an example.

[Conventional technology]

Traditionally, to inspect for damage to overhead power lines between towers,
A worker on a helicopter can visually inspect power lines while inspecting them, or a self-propelled machine that travels over power lines can be equipped with two movie cameras, and these two movie cameras can be used to inspect power lines. Photographs were taken from 180 degrees at each location, and the film was developed, printed, and inspected for damage to one of the power lines.

In addition, as a self-propelled electric wire inspection machine, it was
An application as described in Publication No. 4 has been filed.

[Problem to be solved by the invention]

In conventional inspections of power transmission lines using helicopters, the helicopter cannot get very close to the power lines, so detailed visual inspections are not possible, and the cost of using the helicopter is high. There were problems such as the inability to inspect the entire circumference.

In addition, we installed two movie cameras on a self-propelled machine that runs on power lines, and develops the film that captures the power lines.
When inspecting by printing, due to the amount of film used, it is not possible to continuously photograph power transmission lines, which may lead to missed inspections, and the film must be developed and printed. The problem is that it is not possible to inspect the power line immediately at the inspection site because it is not possible to inspect the power line, and it is not possible to inspect the entire circumference of the power line without using two or three movie cameras. Furthermore, the film is not very cheap and there is a problem in that the cost of inspecting power transmission lines is high.

In addition, in recent years, in order to prevent accidents such as disconnection of power lines and even collapse of towers due to snow accretion on power lines during heavy snowfall, overhead power lines have been equipped with snow wrestling and twisting to prevent snow accumulation. A weight called a damper is suspended for prevention purposes, but the self-propelled machine was developed to run only on smooth power transmission lines, and therefore cannot run on power transmission lines with suspended dampers. There was also a problem.

In addition, in the self-propelled electric wire inspection machine described in the above-mentioned Japanese Utility Model Publication No. 1986-192614, the power source for the three motors that drive the drive wheels and the power source for the video device are batteries, so while the machine is running, There is a risk that the battery will run out of capacity and the vehicle will stop running midway along the power transmission line. In addition, this self-propelled power line inspection machine has a reflector located directly below the power transmission line, and the shape of the drive wheel suggests that the above-mentioned snow wrestling and twisting to prevent snow accumulation are possible. Another problem is that it is not possible to run on power transmission lines that have dampers installed to prevent them.

SUMMARY OF THE INVENTION An object of the present invention is to provide a self-propelled inspection device for overhead electric wires that can solve the conventional problems as described above.

[Means to solve the problem]

In order to solve the above-mentioned problems, this invention includes a motor generator, an electric motor driven by the power supplied from the motor generator, a motor which is driven by the motor and runs on an overhead electric wire, and , a drive wheel having a concave cross-sectional bottom surface that can ride over a snow ring installed on the electric wire to prevent snow accumulation and a damper for preventing twisting of the electric wire, and a driving wheel located above the electric wire and having a predetermined angle in opposite directions to each other. a two-sided reflector that reflects the left and right upper surfaces diagonally along the axial direction of the electric wire; a light-shielding hood disposed above the two-sided reflector; A self-propelled inspection device for overhead electric wires, characterized in that a camera-integrated VTR capable of simultaneously photographing the left and right diagonally upper surfaces of the electric wire reflected on the two-sided reflective mirror is installed in each machine frame, or the driving wheel. The shape is a large arcuate surface for getting over the dampers provided at predetermined intervals on the wires to suppress twisting of the wires and snow rings for preventing snow accumulation, and the wire is fitted to the central bottom of this large arcuate surface. The present invention provides a self-propelled inspection device for overhead electric wires, which is characterized by being formed with a small circular arc surface.

[Effect]

In order to use the above-mentioned self-propelled inspection device for overhead power lines to inspect overhead power lines between steel towers and snow rings and dampers installed on the power lines, this self-propelled inspection device must be used after stopping power transmission on the power lines. Place the drive wheel of the running inspection device on the power transmission line. When the motor generator is operated, for example, AClooV electric power is generated, and this electric power is supplied to rotate the electric motor and drive the drive wheels, and this self-propelled inspection device runs on the power transmission line. The electric power generated by this motor generator is also supplied to the camera-integrated VTR, and the operation of this camera-integrated VTR directs the lower surface of the power transmission line and the two-sided reflective mirror placed above the power transmission line. I will simultaneously take pictures of the left and right diagonal upper sides of the power transmission lines shown in the photo.

When the inspection of the transmission line between one tower is completed, this inspection device is placed on the transmission line between the next tower. At this time, if there is not enough remaining videotape, a new videotape is loaded, but if a new videotape is assigned to each power transmission line between the towers, then the videotape can be played back. This is useful when inspecting power transmission lines.

In addition, the shape of the drive wheel is changed to a large arc surface for overcoming a damper installed on the power transmission line to suppress twisting of the power transmission line and a snow ring installed on the power transmission line to prevent snow accumulation. By forming a small arcuate surface on the center bottom surface that fits into the power transmission line, this drive wheel has a small arcuate surface formed on it that fits into the power transmission line, making the driving stable, and the drive wheel can be driven stably by the above-mentioned camera-integrated VTR. Photographs of power lines are well taken. When this drive wheel gets over the damper installed on the power transmission line to suppress its twisting and the snow ring to prevent snow buildup, the large arc surface formed on this drive wheel easily rides over the damper and the snow ring to prevent snow buildup. Then, the small arc surface fits into the power transmission line and runs.

〔Example〕

The drawings show an embodiment of the self-propelled inspection gl for overhead electric wires according to the present invention, and FIG. 1 is a front view thereof, FIG. 2 is a right side view thereof, FIG. 3 is a top view, and FIG. 1 is a perspective view showing the state of use, where 1 is a motor generator provided on the bottom 2a of the machine frame 2, 3 is provided on the upper part 2b of the machine frame 2, and is driven and rotated by the power supplied from the motor generator 1. electric motor, 4.4
are drive wheels having a concave bottom surface in cross section, which are provided at a predetermined interval on the upper part 2b of the machine frame, and are driven by this electric motor 3 and run on an overhead power transmission line 5; 3, and this driving force is transmitted to the other drive wheel 4 via a belt 6. The specific shape of the concave bottom surface of the drive wheel 4 is as shown in detail in FIG. 1. Dampers 7 (see Figure 6) are hung and attached to the i15 every 100 m to suppress twisting of the power transmission line 5, and snow slings and slings (see Figure 6) are attached to the power transmission line 5 every few hundred meters to prevent snow from accumulating. (not shown), and a small arcuate surface 4b that fits into the power transmission line 5 at the center bottom of the large arcuate surface 4a. Reference numeral 8 is a two-sided reflector located above the power transmission line on the upper part 2b of the machine frame, and has a predetermined angle in opposite directions to reflect the left and right oblique upper surfaces along the axial direction of the power transmission line; A light-shielding hood provided on the upper part 2b of the machine frame above the reflector 8, 1
0 is a camera-integrated VTR that is installed on the bottom 2a of the machine frame and is capable of simultaneously photographing the lower surface of the power line directly and the diagonally upper left and right sides of the power line reflected on the two-sided reflective mirror 8. Mounted on the bottom 2a of the frame is an illumination lamp for illuminating the lower surface of the power transmission line, 12 is a length measurement counter from the inspection start position of the power transmission line, and 12a is pressed against the belt 6 to drive the length measurement counter 12. This is a length measuring roller that rotates. Although not shown, in order to prevent the driving wheels 4.4 mounted on the power transmission line from coming off the power transmission line due to shaking, there is a structure installed in the upper part 2b of the machine frame to prevent the power transmission line near the driving wheels from coming off. A roller may be provided that rotates while pressing the lower surface upward.

In order to inspect the overhead power line 5, the damper 7, and the snow wrestling that are installed between the towers using the self-propelled overhead power line inspection device configured as described above, this inspection must be performed after stopping the power transmission of the power line. The driving wheels 4, 4 of the device are placed on the power transmission cotton 5. Then, when the motor generator 1 is operated,
For example, AClooV power is generated, and this power supply rotates the electric motor 3 and drives the drive wheels 4, 4, and the inspection device runs on the power transmission line, and the motor generator 1 generates power. Powered by camera-integrated VTR
10, and by the operation of this camera-integrated VTR 10, the bottom surface of the power transmission line 5 can be directly viewed, and the left and right diagonal upper surfaces of the power transmission line reflected on the two-sided reflective mirror 8 disposed above the power transmission line 5 can be viewed directly. Shoot and record at the same time. When the inspection of the transmission line between one tower is completed, the self-propelled inspection device is placed on the transmission line between the next tower. At this time, if there is not enough remaining videotape, a new videotape is loaded, but if a new videotape is assigned to each power transmission line between the towers, then the videotape can be played back. This is useful when inspecting power transmission lines. By photographing the power transmission line in this manner, playing back the recorded video tape, and examining it in detail, damage to the power transmission line, damper, and snow ring can be inspected in detail.

Further, the shape of the driving wheels 4, 4 is changed to a large arc surface 4a for overcoming a damper 7 suspended from the power transmission line 5 to suppress twisting of the power transmission line 5 and a snow ring for preventing snow accumulation. A power transmission line 5 is placed on the center bottom of this large circular arc surface 4a.
Since the drive wheel 4°4 is formed with a small circular arc surface 4b that fits into the power transmission line 5, the small circular arc surface 4b formed on the drive wheel 4. VT
Photographing of the power transmission line 5 by Rl0 is performed satisfactorily.

When the drive wheels 4.4 go over the damper 7 provided on the power transmission line 5 to suppress its twisting and the snow ring for preventing snow buildup, the large arc surface 4a formed on the drive wheels 4,4 When the electric wire 5 is easily run over, the small circular arc surface 4b is fitted onto the electric wire 5 again, and the electric wire 5 travels.

Note that this self-propelled inspection device is capable of inspecting not only power transmission lines but also overhead lightning protection ground lines and optical fiber composite ground lines.

〔Effect of the invention〕

As explained above, the present invention includes a motor generator, an electric motor driven by the power supplied from the motor generator, a motor driven by the electric motor, which runs on an overhead electric wire, and a motor installed on the electric wire. A drive wheel has a concave bottom surface that can ride over a snow ring to prevent snow accumulation and a damper to prevent twisting of electric wires, and a drive wheel that is located above the electric wires and has a predetermined angle in opposite directions to the electric wire shaft. A two-sided reflective mirror that reflects the left and right upper surfaces diagonally along the direction, a light-shielding hood disposed above the two-sided reflective mirror, and a light-shielding hood disposed below the electric wire to directly reflect the lower surface of the electric wire, and the two-sided reflective mirror A self-propelled inspection device for overhead power lines, characterized in that a camera-integrated VTR capable of simultaneously photographing the left and right diagonal upper surfaces of the power lines shown in the image above is installed in each machine frame, or the shape of the drive wheel is A large arcuate surface for getting over the dampers and snow rings provided at predetermined intervals on the electric wire to suppress twisting of the wire, and a small arcuate surface that fits the electric wire at the center bottom of this large arcuate surface. Since the self-propelled inspection device for overhead power lines is characterized by the above-mentioned configuration, it is possible to conduct a more detailed inspection than the conventional method of visually inspecting power transmission lines aboard a helicopter.

In addition, as in other conventional examples, two movie cameras are mounted on a self-propelled machine that runs on power lines, and when inspecting power lines using these, the film that has been shot is developed and printed. However, in this invention, pre-recorded video tapes of power lines, etc. can be inspected at the site where power lines are inspected. With the power supplied from the motor generator, a video playback device equipped with a cathode ray tube can be operated to play back photographed images of power transmission lines for inspection.

In addition, when shooting with a conventional movie camera, due to the amount of film used, power lines are connected to i! Unable to take pictures continuously,
There was a fear that an inspection would be missed, but the self-propelled inspection device for overhead power lines of this invention can continuously record images of power lines using video tapes used to inspect power lines. There is no risk of omission of inspection.

In addition, in the case of photographing and recording power transmission lines using video tape, the video tape can be used many more times than in the case of photographing with film, so the cost for inspecting power transmission lines becomes extremely low.

In addition, when using this camera-integrated VTR to videotape a power line, the lower surface of the power line can be directly positioned, and the diagonal upper left and right surfaces along the axial direction of the power line can be positioned above the power line. Since it is possible to photograph images reflected on a two-sided reflective mirror, a single camera-integrated VTR is sufficient for photographing and inspecting power transmission lines and the like.

In addition, the shape of the drive wheel is changed to a large arc surface for overcoming a damper installed on the power transmission line to suppress twisting of the power line and a snow ring installed to prevent snow accumulation, and a central bottom surface of this large arc surface. Since the drive wheel is formed with a small arcuate surface that fits into the power transmission line, the small arcuate surface formed on the drive wheel fits exactly into the power transmission line, making the driving stable, and the power transmission line can be photographed using the camera-integrated VTR. is carried out well.

When this drive wheel crosses over a damper installed on the power transmission line to suppress its twisting or a snow ring attached to the power transmission line to prevent snow buildup, the large arc surface formed on this drive wheel makes it easy to overcome the When the vehicle runs over a road and overcomes it, the small arcuate surface of the drive wheel engages with the power transmission line, allowing for stable running.

[Brief explanation of the drawing]

The drawings show an embodiment of the self-propelled two-point safety device for overhead power lines according to the present invention, and FIG. 1 is a front view thereof, FIG. 2 is a right side view thereof, FIG. 3 is a top view, and FIG. The figure is a perspective view showing the state of use, FIG. 5 is a detailed view of the drive wheel, and FIG. 6 is a damper attached to the power transmission line to suppress twisting. 1...Motor generator 2...Machine frame 2a...Bottom part of machine frame 2b...Upper part of machine frame 3...Electric motor 4...Drive wheel 4a...Large arc surface
4b...Small arc surface 5...Power transmission'! ! A
6... Belt 7... Damper 8...
・Double reflecting mirror 9...Shading hood 10...Camera integrated VTR 1)...Lighting lamp 12...Length measurement counter 1
2a... Length measuring roller patent applicant Chubu Electric Power Co., Ltd. Chubu Electric Works Co., Ltd. Izumi Seiki Manufacturing Co., Ltd. Figure 2 Figure 4 Figure 1 S Figure 6

Claims (2)

[Claims] (1) A motor generator, an electric motor that is driven by the power supplied from the motor generator, and a motor that is driven by this motor and runs on an overhead electric wire. A driving wheel having a bottom surface with a concave cross section that can overcome a damper for preventing wrestling and twisting of the wire, and a drive wheel having a bottom surface with a concave cross section that can overcome a damper for preventing wrestling and twisting of the wire, and a left and right diagonal upper surface located above the wire and having a predetermined angle in opposite directions to each other and along the axial direction of the wire. A two-sided reflective mirror to be imaged, a light-shielding hood placed above the two-sided reflective mirror, and a light-shielding hood placed below the electric wire to directly expose the lower surface of the electric wire, and to diagonally the right and left sides of the electric wire reflected in the two-sided reflective mirror. A self-propelled inspection device for overhead power lines, characterized in that a camera-integrated VTR capable of simultaneously photographing the top surface is installed in each machine frame. (2) The shape of the drive wheel includes a large circular arc surface for overcoming dampers provided at predetermined intervals on the electric wires to suppress twisting of the electric wires and snow rings for preventing snow accumulation, and a central bottom surface of this large circular arc surface. The self-propelled inspection device for overhead electric wires according to claim 1, characterized in that the inspection device is formed of a small circular arc surface that fits into the electric wire.