JPH0434403Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention is a method for observing the distance between overhead wires such as high-voltage power transmission lines and surrounding objects to be observed such as trees and buildings, and the situation thereof. Concerning surrounding distance observation aircraft.

(Prior Art and its Problems) For example, it is extremely dangerous if a high-voltage power transmission line sways due to strong winds and hits surrounding obstacles such as trees, buildings, and poles. Therefore, it is necessary to maintain a certain distance or more between the high-voltage power transmission line and surrounding obstacles.

Conventionally, we check whether the distance between the high-voltage power line and the high-voltage power line is appropriate from obstacles such as trees and buildings near the line, but in forested areas and areas with dense buildings, there are many obstacles. Performing this confirmation work each time by on-site measurement requires enormous cost and effort.

On the other hand, distances have also been measured using aerial photographs, but there are problems in that they are expensive and it is difficult to accurately measure the distance between high-voltage power transmission lines and obstacles.

(Purpose of the invention) In view of the above-mentioned conventional problems, the present invention is a distance observation device around overhead lines that can observe the distance and situation between overhead lines such as high-voltage power transmission lines and obstacles (objects to be observed). The purpose is to provide

(Means for Solving the Problems) In order to solve the above conventional problems, the present invention provides a traveling vehicle 22 that is suspended from an overhead wire 3 and moves along the overhead wire 3. It is equipped with a mileage measuring device 23 that measures the distance traveled, a light wave or sonic distance meter 26 that measures the distance to the observation object 65 around the overhead wire, and a camera 27 that takes a picture of the observation object 65. However, the light wave or sonic rangefinder 26 and the camera 27 can be integrally driven to rotate intermittently at predetermined angles about a horizontal axis along the running direction of the vehicle 22. A configuration is adopted in which the traveling vehicle 22 is provided with a rotation angle detector 45 for detecting the rotation angle of the machine 27.

(Function) In the above configuration, the traveling vehicle 22 is made to travel intermittently along the overhead wire 3 at predetermined distance intervals, and the traveling distance is measured by the traveling distance measuring device 23, and when the traveling vehicle 22 is stopped intermittently, the light wave or sonic distance meter 26 and photographing are performed. Machine 2
7 intermittently rotates around the horizontal axis along the running direction of the vehicle 22, the distance to the observation object (obstacle) 65 is measured along the cross-sectional direction of the overhead wire 3, and at the same time the distance is measured. The observed object (obstacle) 65 can be photographed.

(Example) An example of the present invention will be described based on the drawings. As shown in FIG. 1, this embodiment relates to a high-voltage power transmission line circumference distance observation device 2 that observes the surrounding area of high-voltage power transmission lines stretched between steel towers 1.
Existing overhead ground wire 3 that is not used for power transmission between
(Ground wire).
It is moved by a self-propelled towing vehicle 4 that is also suspended from the overhead ground wire 3.

As shown in FIGS. 2 and 3, the self-propelled towing vehicle 4 has a pair of wheels 6 mounted on an overhead ground wire 3.
and a frame 7 that rotatably supports both wheels 6.
and a drive motor 8 disposed on the frame 7, a drive chain sprocket wheel 9 for the motor 8, an idle chain sprocket wheel 10 rotatably supported on the frame 7, and a drive chain sprocket wheel 9 for each wheel 6. An endless chain 12 is wound around the attached sprocket wheel 11, and both wheels 6 are rotated through the chain 12 by the drive of the motor 8, so that the tow vehicle 4 can be driven by itself. I'm starting to be able to do it.

A balance frame 14 is suspended from the frame 7 via the support shaft 13, and the balance frame 14
A storage box 15 containing a battery, timer, control device, etc. is fixed to the lower end of the box. A horizontal rod 17 is arranged between the vertical rods 16 hanging from the front and rear ends of the frame 7, and a detection switch 18 and a detection bar 19 for detecting obstacles are arranged at the front end of the horizontal rod 17. Towing hook 20 at the rear end of the
is installed.

As shown in FIGS. 2 to 4, the observation device 2 is suspended from an overhead ground wire 3.
A traveling vehicle 22 that moves along the road, a distance measuring device box 24 containing a mileage measuring device 23, a battery, a mileage storage section, an observation object distance storage section, a rotation angle storage section, a photographing/recording section, and a control section. and an observation instrument frame 28 with an attitude adjustment device 70 in which a light wave or sonic rangefinder 26 and a camera 27 are installed. The observation device box 25 and observation device frame 28 are
They are connected by a connecting device 29, respectively.

The traveling vehicle 22 has almost the same structure as the towing vehicle 4 described above, except that it does not include the motor 8, etc.
A pair of wheels 31 placed on the overhead ground wire 3, and a frame 32 that rotatably supports both wheels 31.
and a horizontal rod 34 disposed between the vertical rods 33 hanging from the front and rear ends of the frame 32, and a hook 35 attached to the front end of the horizontal rod 34 is attached to the connecting rod 36.
It is connected to the towing hook 20 of the tow vehicle 4 via.

The distance measuring device box 24 is connected to the vertical rod 3.
An endless belt 40 is wound around the pulley 38 of the mileage measuring device 23 which is fixed to the lower end of the drive wheel 3 and built into it, and the pulley 39 attached to the rear wheel 31, and the tension pulley is supported by the horizontal rod 34. 41
is pressed against the belt 40 by a spring.
Therefore, when the wheel 31 rotates, the distance traveled is measured by the distance measuring device 23.

Note that instead of the pulley 39 attached to the rear wheel 31 of the above configuration, a measuring roller with a flat outer peripheral surface that contacts the overhead ground wire 3 is provided, and the endless belt 40 is wound around the pulley that is integrally formed with the measuring roller. You may also rotate it. According to this, since the outer circumferential surface of the measuring roller is flat, even if the wire diameter of the overhead ground wire 3 in contact with it is changed, its rotational speed does not change, making it possible to accurately detect the traveling distance at all times. can.

A recess 42 is formed in the center of the lower surface of the observation instrument frame 28, and a light wave or sonic rangefinder 26 and a camera 27 are integrally attached to a horizontal shaft 43 rotatably disposed in the recess 42. The distance meter 26 and the photographing device 27 can be rotated intermittently at predetermined angle intervals via a horizontal shaft 43 by a drive mechanism (for example, a pulse motor) 44 disposed within the observation device frame 28. Further, a rotation angle detector (for example, a potentiometer) 45 for detecting the rotation angle of the horizontal shaft 43 is provided within the observation frame 28. As the distance meter 26, a time pulse type light wave distance meter (for example, manufactured by Wild Co., Ltd.) is used.
DIOR3002) is most suitable, and it emits light from the light projector 46 toward the object to be observed, and the reflected light is received by the light receiver 47 to instantaneously measure the distance.

In this embodiment, a video camera is used as the photographing device 27, and the television screen on which the video film is played has a mileage display section 60 in the upper right corner and a distance display section 60 in the lower right corner thereof, as shown in FIG. An object distance display section 61 and a tilt direction and tilt angle display section 62 are provided on the upper left side thereof. Note that a spirit level 63 is provided at the center of the upper surface of the observation device frame 28.

The attitude adjustment device 70 is attached to the observation instrument frame 28.
It consists of a horizontal support plate 71 disposed above, and extendable connecting members 72 that connect the horizontal support plate 71 and the four corners of the observation device frame 28 to each other, and each of the connecting members 72 has a ball at the lower end. It is connected to the observation instrument frame 28 via a universal joint 73 such as a joint, and has a connecting rod 75 whose upper end threaded portion is screwed into a nut 74 fixed to the horizontal support plate 71, and each of the connecting rods 75 By appropriately operating the knob 76 integrally formed in the center of
By this, the level gauge 63
The observer frame 28 can be placed in a horizontal state while looking at the image.

The observation device box 25 includes a bottom plate portion 25A,
Box body 25B placed over the bottom plate portion 25A
and a plurality of connecting fittings 64 that connect the box body 25B to the bottom plate portion 25A.

The connecting device 29 is constructed as follows. That is, as shown in FIGS. 5 and 6, the lower surface of the distance measuring device box 24 and the observation device box 2
5, the lower board 49 is bolted to the top surface of the observation instrument box 25 and the horizontal support plate 71 of the attitude adjustment device 70, and the engagement frames 50, 51 are attached to each board 48, 49. After fixing, insert the T-shaped fitting 52 horizontally into the upper engagement frame 50, and then tighten the inserted T-shaped fitting 52 with the fixing screw 5.
3 to the upper substrate 48, and the lower engagement frame 5
1, the inserted bifurcated metal fitting 54 is fixed to the lower engagement frame 51 with a fixing screw 55, and the bifurcated metal fitting 54 and the T-shaped metal fitting 52 are rotatably connected by a connecting shaft 56. , the connecting shaft 5
6 is engaged with a retaining pin 57. Both metal fittings 5
2, 54, this coupling device 29 is installed during the suspension operation.
To prevent accidental movement, a temporary fixing pin hole 59 is provided for inserting a temporary fixing pin 58 shown in FIG. Furthermore, the connecting shaft 5 of the upper connecting device 29
6 and the connecting shaft 56 of the lower connecting device 59 are shifted from each other by 90° on the horizontal plane. Also observation aircraft 2
, a traveling vehicle 22 and a distance measuring device box 24,
The reason why the observation device box 25 and the observation device frame 28 are divided into three parts is to facilitate transportation and to ensure that the observation device frame 28 can always maintain a horizontal state.

A method for observing distances around power lines will be explained. First, when measuring the distance to the tree 65, which is an observation target (obstacle) directly under the power transmission line, use the distance meter 26
and the camera 27 is directed directly downward as shown by the solid line in FIG.
The observation aircraft 2 is moved along the overhead ground line 3. Then, for example, the vehicle stops traveling every 10 meters, and during the stops, light is emitted from the light projecting section 46 of the distance meter 26 toward the tree 65, and the reflected light is received by the light receiving section 47 and instantly reaches the tree 65. The distance is measured, and the measured value is stored in the observation object distance storage section of the observation device box 25. The distance traveled by the vehicle 22 is also stored in the distance storage section of the box 25.
Furthermore, at the same time, the photographing device 26 continuously photographs the area immediately below the power transmission line. The photographed image is then recorded on a video tape in the photographing and recording section of the observation instrument box 25, and the above-mentioned traveling distance and distance to the observation object (tree 65) are recorded on the video tape.

Next, either collect the videotape above or use Observation Machine 2.
A video signal is wirelessly transmitted from the station to the ground, and the video is played back by a playback device. Figure 7 shows the video screen, showing the area directly below the power transmission line. When the distance meter 26 measures the distance to the tree 65 at the center of the screen, the measured distance is displayed on the observation object distance display section 61. Then, by reading the travel distance at that time using the travel distance display section 60, it is possible to detect which position on the power transmission line and how close the tree 65 is.

In the above description, the case where the situation directly below the power transmission line is detected is given as an example, but the situation in the transverse direction of the power transmission line can also be detected. That is, the observation device 2 is stopped, and the drive mechanism 44 moves the distance 26 and the camera 27 by a predetermined angle (for example, 10 degrees) to the right and left from the state shown by the solid line in FIG. The 8th
As shown in the figure, the distance to the tree 65 is measured by the distance meter 26. Also, the rangefinder 26 and camera 2
The rotation direction and rotation angle of 7 are determined by the rotation angle detector 45.
The detected value is detected by the observer box 2.
5 is stored in the rotation angle storage unit. At the same time, the tree 65 is photographed by the camera 26.

As shown in FIG. 7, a tree 65 measured by the distance meter 26 is displayed in the center of the video screen, and the distance traveled at that time is displayed on the distance display section 6.
0, and the distance to the tree 65 is displayed on the observation target distance display section 61, as well as the distance meter 26 and camera 27.
The inclination direction (right or left) and inclination angle are displayed on the inclination direction and inclination angle display section 62, for example, "30 degrees right".

Note that the observation device 2 may be made to travel intermittently along the power transmission line while the distance meter 26 and the photographing device 27 are left tilted at a predetermined angle to the right or left. According to this, the situation on the side of the power transmission line can be detected.

In the above embodiment, the observation aircraft 2 is towed by the towing vehicle 4, but it may be self-propelled.

In order to further improve the measurement accuracy, the observation device 2 may be moved back and forth, and the measured values obtained by the back and forth movements may be averaged. In this case, measurement accuracy improves in proportion to the square of the number of measurements.

(Effects of the invention) According to the overhead wire circumference distance observation device of the present invention, a light wave or sonic rangefinder and a camera are integrated, so that objects to be observed can be observed directly with the naked eye by observing images from the camera. Not only can you check,
The distance to the observation target can be immediately detected.

Furthermore, since the light wave or sonic rangefinder and camera can be driven intermittently, objects to be observed can be observed over a wide range just by using one rangefinder and one camera.

Moreover, while viewing the image, you can simultaneously check the distance to the object to be observed, and since the two always match, there is no need for a computer to match the two, making it economical. At the same time, the entire device can be downsized.

Furthermore, it is ideal for observing forest areas and densely built areas, and can significantly reduce costs and labor compared to conventional observation methods. If you observe it once a year, you can learn about changes in the area around the overhead wires over time.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; Fig. 1 is a schematic perspective view showing the state in which the observation aircraft is being observed by moving it along an overhead ground line; Fig. 2 is a schematic perspective view of the observation aircraft and the towing vehicle. Side view, Figure 3 is the same front view, Figure 4
The figure is a rear view of the same, Figure 5 is a vertical cross-sectional view of a coupling device that is a part of the observation aircraft, Figure 6 is a view taken along the - arrow in Figure 5,
FIG. 7 is a television screen using a camera, and FIG. 8 is an explanatory diagram showing a method of measuring the distance to a tree. 2... Transmission line surrounding distance observation device, 3... Overhead ground wire (overhead line), 4... Self-propelled towing vehicle, 22... Traveling vehicle, 2
3...Odometer, 26...Light wave or sonic distance meter, 27...Photographer, 43...Horizontal axis, 4
4... Drive mechanism, 45... Rotation angle detector, 65
...Trees (observation target).

Claims (1)

[Scope of utility model registration request] A traveling vehicle is installed that is suspended from an overhead wire and moves along the overhead wire, and the traveling vehicle is equipped with a travel distance measuring device that measures the distance traveled, and a light wave or sound wave type that measures the distance to the observation target around the overhead wire. It is equipped with a rangefinder and a camera that takes pictures of the object to be observed, and the light wave or sonic rangefinder and camera are integrated into a rangefinder that shoots at predetermined angles around the horizontal axis along the traveling direction of the vehicle. 1. A distance observation device around an overhead wire, which is capable of being driven in intermittent rotation and is provided with a rotation angle detector for detecting the rotation angle of the distance meter and the photographing device on the traveling vehicle.