【発明の詳細な説明】
本発明は、架空送電線と架空送電線近傍の近接物体との
離間距離を測定する方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for measuring the distance between an overhead power transmission line and a nearby object near the overhead power transmission line.
架空送ＩＩｔ＃ｉＩ近傍、特に沿線下にある樹木等の近
接物体が架空送電線に接近し過ぎると地絡事故の発生原
因となる。このため従来は、トランシットにより架空送
電線とその沿線下にある樹木等の接近物体との離間距離
を定期的に測定し、架空送電線に接近し過ぎた樹木の枝
葉を伐採する等して地絡事故を防止していたが、架空送
電−路全域に亘つて架空送電梅とその近隣にある近接物
体との離間距離を測定するには多大な労力と長時間を要
し、しかもトランシットによる離間距離の測定は架空送
電線と近接物体との両方が見透せる地域に限られるため
に、山間地帯や樹木の密生した地域では測定することが
できないなど多くの間屓点があったＯ
本発明は上記点に鑑みなされたもので、以下これを図示
した実施例について説明するに、第１図は本発明方法の
一実施例を示す説明図で、図において１は走行車Ａに回
転自在に軸支の駆動用ローラで、該駆動用リーラ１は電
源４により駆動するモーター２とベルト３を介して回転
し、走行車Ａを送電−〇に沿わせて自走させる。５は走
行車Ａに回転自在に軸止の走行用ローラ、６は走行用ロ
ーラ５と同軸にその一方の側面に取付けられた突出部６
αを有する円盤カム、７はレリーズで、該レリーズ７の
先端部は上記円盤カム６の真下に設けられた台座９に固
定され、円盤カム６が一回転する毎に円盤カム６の突出
部６αでレリーズ７のシヤツター釦８が押されるように
なっているｏｌｏは走行車Ａに下方又は斜め下方を向け
て取付けられた自動巻上げ機構を内蔵したカメラで、該
カメラ′１０の焦点距離を予め送電線Ｏに対する近接物
体の危険距離（例えば１ｍ−１５ｍ）にセットし、図示
するように走行車Ａを架空送電線０上（或は架空地線上
）に駆動用ローラ１と走行用ローラ５とで懸架して鉄塔
径間をモーター駆動により自走させ、走行用ローラ５と
一諸に回転する円盤カム６の一回転毎にその突出部６α
でレリーズ７を介してカメラ１０のシャッター釦８を自
動的に押し、架空送電線沿線下の近接物体を連続撮影し
、撮影した現像フィルムによって鮮明度の高い写真から
危険接近した近接物体を選出しその位置と相互間の距離
を測定検出する。第２図は本発明方法の他の実施例を示
す説明図で、図示するように円盤カム６の真下にマイク
ロスイッチ１１を設け、該マイクロスイッチ１１を回転
する円盤カム６の突出部６αで作動させて、円盤カム６
の回転数を計数カウンター１２でカウントし、該計数カ
ウンター１２の数値が、予め第１プリセツトカウンター
１３にセ、ツトしておいた数値αに達した時点で、カメ
ラ１０のシャッター釦８の真上に取付けられたソレノイ
ド１５が円盤カム６の一回転周期毎に作動してカメラ１
０のシャッター釦８を押し架空送電線沿線下の近接物体
を所定間隔毎に連続して撮影し、円盤カム６によって作
動する計数カウンター１２の数値が、予め第２プリセツ
トカウンター１４にセットしておいた前記第１プリセツ
トカウンター１３の数値ａ −） ｂに達した時にソレ
ノイド１５の作動が自動的に停止しうるようにして送電
梅沿機下の一定区間内の近接物体を連続して撮影し、前
述のように撮影した現像フィルムによって送電線０に接
近している危険範囲内にある接近物体の位置と距離とを
測定検出する。まだ、走行車Ａの左右に夫々カメラ１０
を斜め下方に向けて取付けるか、或は走行車Ａに焦点距
離を異ならせた複数台のカメラ１０を下方又は斜め下方
に向けて取付けて、架空送電線とその沿線下の近接物体
の位置とその離間距離を広範囲に且つ的確に測定するこ
ともできる。If a nearby object such as a tree near the overhead power transmission line, particularly along the line, comes too close to the overhead power transmission line, it may cause a ground fault. For this reason, conventional methods have been to periodically measure the distance between overhead power lines and approaching objects such as trees along the line, and to remove branches and leaves from trees that are too close to the overhead power lines. However, it takes a lot of effort and a long time to measure the distance between an overhead power transmission line and nearby objects in its vicinity over the entire overhead power transmission line, and furthermore, the separation caused by transit Since distance measurement is limited to areas where both overhead power lines and nearby objects can be seen, there are many drawbacks, such as being unable to measure in mountainous areas or densely wooded areas. was made in view of the above points, and an embodiment illustrating this will be explained below. Fig. 1 is an explanatory diagram showing an embodiment of the method of the present invention, and in the figure, 1 is a rotatable member attached to a traveling vehicle A. The driving reeler 1, which is a shaft-supported driving roller, rotates via a motor 2 driven by a power source 4 and a belt 3, and causes the traveling vehicle A to travel along the power transmission line -〇. Reference numeral 5 denotes a running roller that is rotatably fixed to the running vehicle A, and 6 is a protrusion 6 that is coaxially attached to the running roller 5 and attached to one side thereof.
A disc cam having α, 7 is a release, the tip of the release 7 is fixed to a pedestal 9 provided directly below the disc cam 6, and every time the disc cam 6 rotates, the protrusion 6α of the disc cam 6 The shutter button 8 of the release 7 is pressed when the olo is a camera with a built-in automatic winding mechanism attached to the vehicle A facing downward or diagonally downward. Set at a dangerous distance from nearby objects (for example, 1m to 15m) with respect to the electric wire O, and as shown in the figure, drive the traveling vehicle A over the overhead power transmission line 0 (or over the overhead ground wire) using the driving roller 1 and the traveling roller 5. The protruding portion 6α of the disk cam 6 that is suspended and self-propelled through the span of the steel tower by a motor drive rotates together with the traveling roller 5.
The shutter button 8 of the camera 10 is automatically pressed via the release 7 to continuously photograph nearby objects along the overhead power transmission line, and the photographed developed film selects the dangerously close nearby objects from the high-definition photographs. Measure and detect their positions and the distances between them. FIG. 2 is an explanatory diagram showing another embodiment of the method of the present invention. As shown in the figure, a microswitch 11 is provided directly below the disk cam 6, and the microswitch 11 is activated by the protrusion 6α of the rotating disk cam 6. Let me, disk cam 6
The number of rotations of the camera 10 is counted by the counting counter 12, and when the value of the counting counter 12 reaches the value α set in advance in the first preset counter 13, the shutter button 8 of the camera 10 is pressed. A solenoid 15 installed on the top operates every rotation period of the disk cam 6 to control the camera 1.
0 shutter button 8 is pressed to continuously photograph nearby objects along the overhead power transmission line at predetermined intervals, and the numerical value of the counting counter 12 operated by the disc cam 6 is set in advance in the second preset counter 14. The operation of the solenoid 15 can be automatically stopped when the value of the first preset counter 13 (a-) b) is reached, and adjacent objects within a certain section below the power transmission machine are continuously photographed. Then, the position and distance of an approaching object within the dangerous range approaching the power transmission line 0 is measured and detected using the developed film photographed as described above. There are still cameras 10 on each side of vehicle A.
Or, by installing a plurality of cameras 10 with different focal lengths on the vehicle A facing downward or diagonally downward, the position of the overhead power transmission line and nearby objects along the line can be determined. It is also possible to accurately measure the separation distance over a wide range.
本発明方法によれば、上述のように架空送電線上を自走
する走行車Ａに焦点距離を定めたカメラ１０′を下方、
斜め下方等に向けて取付けて所定間隔毎に架空送電線近
傍の近接物体を自動撮影し、撮影したフィルムから危険
範囲内にある接近物体の位置と相互間の離間距離を測定
するので、架空送電線に危険接近した近接物体とその位
置を架空送電線全域に亘って短時間に且つ正確に測定し
うるばかりでなく、従来測定し得なかった地域の測定も
簡単にしかも的確に行なえる等の利点がある０According to the method of the present invention, as described above, the camera 10' with a fixed focal length is directed downward to the vehicle A that is self-propelled on the overhead power transmission line.
It is installed facing diagonally downward, etc., and automatically photographs nearby objects near overhead power lines at predetermined intervals, and uses the photographed film to measure the positions of approaching objects within the danger range and the distances between them, making it possible to avoid overhead power transmission. Not only can it quickly and accurately measure nearby objects that come dangerously close to power lines and their positions across the entire overhead power line, but it can also easily and accurately measure areas that could not be measured previously. 0 with advantages
【図面の簡単な説明】[Brief explanation of drawings]
第１図は本発明方法の一実施例を示す説明図、第２図は
本発明方法の他の実施例を示す説明図である。
Ａ：走行車 に駆動ローラ
２：モーター ３：ベルト
４：電 源 ５８走行用ローラ
６！円盤カム ７二レリーズ
８；シャッター釦 ９：台 座
１（ｌカメラFIG. 1 is an explanatory diagram showing one embodiment of the method of the present invention, and FIG. 2 is an explanatory diagram showing another embodiment of the method of the present invention. A: Drive roller 2: Motor 3: Belt 4: Power supply 58 Travel roller 6! Disc cam 72 release 8; shutter button 9: pedestal 1 (l camera