JPH0350486B2 - - Google Patents
Info
- Publication number
- JPH0350486B2 JPH0350486B2 JP24705686A JP24705686A JPH0350486B2 JP H0350486 B2 JPH0350486 B2 JP H0350486B2 JP 24705686 A JP24705686 A JP 24705686A JP 24705686 A JP24705686 A JP 24705686A JP H0350486 B2 JPH0350486 B2 JP H0350486B2
- Authority
- JP
- Japan
- Prior art keywords
- guide tube
- insertion guide
- image
- image guide
- distal end
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000003780 insertion Methods 0.000 claims description 47
- 230000037431 insertion Effects 0.000 claims description 47
- 238000007689 inspection Methods 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 229920003002 synthetic resin Polymers 0.000 claims description 4
- 239000000057 synthetic resin Substances 0.000 claims description 4
- 239000013505 freshwater Substances 0.000 description 5
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229920003020 cross-linked polyethylene Polymers 0.000 description 1
- 239000004703 cross-linked polyethylene Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Landscapes
- Electric Cable Installation (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明はケーブル入線孔の点検装置に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a cable entry hole inspection device.
地中の送電線路、配電線路、通信ケーブル路等
のケーブル入線孔を点検する場合、イメージガイ
ド等を挿入して点検する方法が考えられるが、該
イメージガイドは長尺となり、基端部から回転さ
せれば、途中でねじれ、その回転は先端部には伝
達されない。つまり、このイメージガイドの先端
部の対物部を被観察部に向けることができない。
また、このイメージガイドの先端に回転駆動装置
を付設すれば、挿入されるイメージガイドの外径
が大きくなり、点検するケーブル入線孔が限定さ
れるという問題点があつた。
When inspecting cable entry holes for underground power transmission lines, power distribution lines, communication cable paths, etc., one possible method is to insert an image guide, etc., but the image guide is long and rotates from the base end. If you do so, it will twist in the middle and that rotation will not be transmitted to the tip. In other words, the objective section at the tip of this image guide cannot be directed toward the observed area.
Furthermore, if a rotary drive device is attached to the tip of this image guide, the outer diameter of the image guide to be inserted becomes large, and there is a problem that the cable entry hole to be inspected is limited.
本発明は従来のこのような問題点を解決して、
観察したい被観察部を簡単かつ迅速に観察してケ
ーブル入線孔を点検することができるケーブル入
線孔の点検装置を提供することを目的とする。 The present invention solves these conventional problems, and
It is an object of the present invention to provide a cable entry hole inspection device capable of inspecting a cable entry hole by simply and quickly observing a part to be observed.
本発明のケーブル入線孔の点検装置は、先端部
の周壁に窓部が設けられた可撓性の合成樹脂から
なる挿入ガイド管と；該挿入ガイド管の基端側か
ら挿入され、該挿入ガイド管の上記窓部からの側
視が可能なように、先端部のみが該挿入ガイド管
の先端部に固定されるイメージガイドと；を備え
ている。
The cable entry hole inspection device of the present invention includes an insertion guide tube made of flexible synthetic resin and having a window in the peripheral wall of the distal end; and an image guide whose only distal end is fixed to the distal end of the insertion guide tube so that the tube can be viewed from the side through the window.
上述の如く構成して、挿入ガイド管をその基端
側から回転させて該挿入ガイド管の先端部を回転
させれば、イメージガイドの先端部が該挿入ガイ
ド管の先端部と一体状に回転する。
With the configuration as described above, if the insertion guide tube is rotated from its proximal end and the distal end of the insertion guide tube is rotated, the distal end of the image guide rotates integrally with the distal end of the insertion guide tube. do.
以下、実施例を示す図面に基づいて本発明を詳
説する。
Hereinafter, the present invention will be explained in detail based on drawings showing examples.
第１図は本発明に係るケーブル入線孔の点検装
置を示し、この点検装置は、ケーブル入線孔１に
挿入される挿入ガイド管２、該挿入ガイド管２の
基端３側に取付けられる基端部材４と、該挿入ガ
イド管２にその基端３側から該基端部材４を介し
て挿入されるイメージガイド５と、を備えてい
る。 FIG. 1 shows a cable entry hole inspection device according to the present invention. A member 4, and an image guide 5 inserted into the insertion guide tube 2 from the proximal end 3 side via the proximal member 4.
しかして、挿入ガイド管２は可撓性を有すると
共に継目を有さない合成樹脂、例えば、架橋ポリ
エチレンからなり、その先端部６の周壁７に窓部
８が設けられている。また、該挿入ガイド管２の
先端開口部は先端側へ拡開するように、先端内周
面がテーパ部３２とされ、その先端側に雌ねじ部
９が形成されている。 The insertion guide tube 2 is made of flexible and seamless synthetic resin, such as crosslinked polyethylene, and has a window 8 in the peripheral wall 7 of its distal end 6. Further, the distal end opening of the insertion guide tube 2 has a tapered inner peripheral surface 32 so as to widen toward the distal end, and a female thread 9 is formed on the distal end side.
また、基端部材４は分岐管１０を有する筒体か
らなり、その先端開口部に、上記挿入ガイド管２
の基端３が嵌合され、その継目部に粘着テープ、
締付けバンド等の取付部材１１にて、該挿入ガイ
ド管２と該基端部材４とが一体状に固定される。
さらに、該分岐管１０には、基端材４を介して挿
入ガイド管２に清水を注入するゴムホース等の注
入管１２が止めバンド等の締付け部材１３にて取
付けられている。なお、分岐管１０に、開閉弁を
付設し、該弁により注入管１２からの清水の流量
を調整するようにすると共に清水の流れの開閉操
作を行なうも好ましい。 The proximal end member 4 is a cylindrical body having a branch pipe 10, and the insertion guide pipe 2 is connected to the distal opening of the proximal member 4.
The proximal end 3 of the
The insertion guide tube 2 and the proximal end member 4 are integrally fixed by a mounting member 11 such as a tightening band.
Furthermore, an injection tube 12 such as a rubber hose for injecting clean water into the insertion guide tube 2 through the proximal end member 4 is attached to the branch tube 10 with a tightening member 13 such as a stop band. It is also preferable that the branch pipe 10 is provided with an on-off valve so that the flow rate of fresh water from the injection pipe 12 can be adjusted by the valve, and the flow of fresh water can be opened and closed.
しかして、イメージガイド５は側視型であり、
イメージガイド本体と、該イメージガイド本体の
先端に付設され対物レンズ１４及びプリズム１５
を有する対物部１６と、該イメージガイド本体の
基端に付設され接眼レンズを有する接眼部２８
（第３図参照）と、からなり、また、該イメージ
ガイド本体は、コアとクラツドとからなる光フア
イバ素線と、該光フアイバ素線を被覆する合成樹
脂等からなる被覆層と、からなる。そして、被観
察部の画像を、対物部１６の対物レンズ１４を介
してプリズム１５に入光させ、該入光された画像
を該プリズム１５を介してイメージガイド本体に
入光させて接眼部２８に伝送させ、該接眼部２８
の接眼レンズを介して観察する。 However, the image guide 5 is a side view type,
An image guide body, an objective lens 14 and a prism 15 attached to the tip of the image guide body.
an eyepiece section 28 attached to the proximal end of the image guide body and having an eyepiece lens.
(See Figure 3), and the image guide body is made up of an optical fiber consisting of a core and a cladding, and a coating layer made of synthetic resin or the like that covers the optical fiber. . Then, the image of the observed area is made to enter the prism 15 through the objective lens 14 of the objective part 16, and the incident image is made to enter the image guide body via the prism 15, and the image is made to enter the image guide body through the prism 15. 28, and the eyepiece 28
Observe through the eyepiece.
そして、イメージガイド５は挿入ガイド管２の
基端３側から挿入され、該挿入ガイド管２の窓部
８からの側視が可能なように、先端部のみが該挿
入ガイド管２の先端部６に先端部材１７を介して
固定される。即ち、この先端部材１７は挿入ガイ
ド管２の雌ねじ部９に螺合するねじ部１９、及
び、イメージガイド５の先端部１９が嵌合する嵌
合孔２０を有すると共に、該先端部材１７のねじ
部１８が挿入ガイド管２の雌ねじ部９に螺合され
た状態にて、嵌合孔２０の内径寸法を縮径させる
切欠き部２１とテーパ状外周面３３を有する縮径
部２２を備えている。従つて、この先端部材１７
を挿入ガイド管２に取付ければ、挿入ガイド管２
の先端部６とイメージガイド５の先端部１９とが
固定されることになる。また、このとき、挿入ガ
イド管２の窓部８の画像が対物レンズ１４を介し
てプリズムに入光させるように設定する。従つ
て、常に、窓部８から被観察部を観察することが
できる。また、該先端部材１７の先端面は略球面
状とされている。 The image guide 5 is inserted from the proximal end 3 side of the insertion guide tube 2, and only the distal end is inserted into the distal end of the insertion guide tube 2 so that it can be viewed from the side through the window 8 of the insertion guide tube 2. 6 via a tip member 17. That is, this tip member 17 has a threaded portion 19 that screws into the female threaded portion 9 of the insertion guide tube 2 and a fitting hole 20 into which the tip portion 19 of the image guide 5 fits. In the state where the part 18 is screwed into the female thread part 9 of the insertion guide tube 2, the diameter reducing part 22 has a notch part 21 that reduces the inner diameter of the fitting hole 20 and a tapered outer circumferential surface 33. There is. Therefore, this tip member 17
If you attach it to the insertion guide tube 2, the insertion guide tube 2
The distal end 6 of the image guide 5 and the distal end 19 of the image guide 5 are fixed. Also, at this time, settings are made so that the image of the window 8 of the insertion guide tube 2 enters the prism through the objective lens 14. Therefore, the part to be observed can always be observed through the window part 8. Further, the distal end surface of the distal end member 17 is approximately spherical.
また、基端部材４の基端側の小径部２３には、
イメージガイド５が該基端部材４及び挿入ガイド
管２に挿入された状態にて、該小径部２３と該小
径部２３の近傍のイメージガイド５とが被覆され
る伸縮自在なゴム等からなるシール部材２４が付
設されている。つまり、該基端部材４の基端を密
封すると共に、イメージガイド５の基端部２７
（第３図参照）を回転させずに、基端部材４のみ
を回転可能としている。２９はシール部材２４を
小径部２３に取付けるための止めバンド等の締付
け部材、３０はシール部材２４をイメージガイド
５に取付けるための止めバンド等の締付け部材で
ある。 In addition, the small diameter portion 23 on the proximal side of the proximal end member 4 includes:
A seal made of elastic rubber or the like that covers the small diameter portion 23 and the image guide 5 near the small diameter portion 23 when the image guide 5 is inserted into the base end member 4 and the insertion guide tube 2. A member 24 is attached. That is, the proximal end of the proximal member 4 is sealed, and the proximal end 27 of the image guide 5 is sealed.
(See FIG. 3), only the base end member 4 can be rotated. 29 is a fastening member such as a stop band for attaching the seal member 24 to the small diameter portion 23; 30 is a fastening member such as a stop band for attaching the seal member 24 to the image guide 5.
次に、上述の如く構成された点検装置にて、ケ
ーブル入線孔１を点検する点検方法を説明する。 Next, an inspection method for inspecting the cable entry hole 1 using the inspection device configured as described above will be explained.
まず、ケーブル３１（第２図参照）が挿入され
たケーブル入線孔１に、挿入ガイド管２及び先端
部１９が該挿入ガイド管２の先端部６に固定され
たイメージガイド５を、挿入しつつ、注入管１２
から挿入ガイド管２に清水を矢印Ａの如く注入し
て、該挿入ガイド管２の窓部８から矢印Ｂの如く
該ケーブル入線孔１に該清水を注入する。従つ
て、イメージガイド５は挿入ガイド管２の窓部８
からの側視可能な位置に保持されると共に、該清
水にてケーブル入線孔１内の懸濁水を押し流し、
かつ、該イメージガイド５の対物部１６を洗滌す
ることができるので、挿入ガイド管２の基端３側
から回転させて該挿入ガイド管２の先端部６を回
転させれば、この回転に連動してイメージガイド
５の対物部１６が回転し、ケーブル入線孔１の被
観察部−つまり、該入線孔１の段差やクラツク−
を正面から常に鮮明な画像としてとらえることが
できる。 First, the insertion guide tube 2 and the image guide 5 whose distal end 19 is fixed to the distal end 6 of the insertion guide tube 2 are inserted into the cable entry hole 1 into which the cable 31 (see FIG. 2) is inserted. , injection tube 12
From there, fresh water is injected into the insertion guide tube 2 as shown by arrow A, and the fresh water is injected from the window 8 of the insertion guide tube 2 into the cable entry hole 1 as shown by arrow B. Therefore, the image guide 5 is inserted into the window 8 of the insertion guide tube 2.
It is held in a position where it can be viewed from the side, and the suspended water in the cable entry hole 1 is washed away with the fresh water,
In addition, since the objective section 16 of the image guide 5 can be cleaned, if the distal end section 6 of the insertion guide tube 2 is rotated by rotating it from the proximal end 3 side of the insertion guide tube 2, the object section 16 of the image guide 5 can be cleaned. Then, the objective part 16 of the image guide 5 rotates, and the observed part of the cable entry hole 1, that is, the step or crack of the cable entry hole 1, is rotated.
You can always capture clear images from the front.
また、上述の如く、挿入ガイド管２内に挿入さ
れたイメージガイド５は、第２図に示す様に、ケ
ーブル２４の真上に固定出来ないまでも、ケーブ
ル入線孔１の内周壁２５とケーブル２４の外周面
２６の狭い隙間部に落ち込まず該イメージガイド
５は広い視野を確保することができ、的確にケー
ブル入線孔１を観察することができる。つまり、
イメージガイド５からの画像には、常に、ケーブ
ル２４が該画像の下方に写つていることになり、
イメージガイド５がねじれている場合も、画像の
上下が判断できる。 Furthermore, as described above, the image guide 5 inserted into the insertion guide tube 2 is connected to the inner circumferential wall 25 of the cable entry hole 1, even though it cannot be fixed directly above the cable 24, as shown in FIG. The image guide 5 can secure a wide field of view without falling into the narrow gap in the outer circumferential surface 26 of 24, and the cable entry hole 1 can be observed accurately. In other words,
The image from the image guide 5 always shows the cable 24 at the bottom of the image.
Even if the image guide 5 is twisted, it is possible to determine whether the image is up or down.
しかして、イメージガイド５の基端部２７が回
転されないので、第３図に示す様に、該イメージ
ガイド５の流さ寸法Ｌ−先端面から接眼部２８ま
での寸法−を回転する先端部６と、回転しない該
基端部２７と、の間のねじれを吸収する十分長尺
に設定すれば、ねじれに対するイメージガイド５
の損壊を防止することができる。即ち、第３図に
示す様に、挿入ガイド管２の基端部３を矢印Ｃの
如く回転させれば、該挿入ガイド管２の先端部６
及びイメージガイド５の先端部１９が矢印Ｃの如
く回転して、該挿入ガイド管２の窓部８を観察し
たい被観察面に向けることができる。また、この
場合、該イメージガイド５の基端部２７は、回転
しない。従つて、イメージガイド５は、第４図に
示す様に、ねじれが生じるので、このねじれ角θ
を僅かな角度となるように該イメージガイド５の
長さ寸法Ｌを十分長尺とすれば、該イメージガイ
ド５の損壊を防止することができることになる。 Since the base end 27 of the image guide 5 is not rotated, the distal end 6 rotates the flow dimension L of the image guide 5 - the dimension from the distal end surface to the eyepiece 28, as shown in FIG. If the image guide 5 is set to be long enough to absorb the torsion between the base end portion 27 and the non-rotating base end portion
damage can be prevented. That is, as shown in FIG. 3, if the proximal end 3 of the insertion guide tube 2 is rotated in the direction of arrow C, the distal end 6 of the insertion guide tube 2 is rotated.
Then, the distal end 19 of the image guide 5 rotates as shown by arrow C, so that the window 8 of the insertion guide tube 2 can be directed toward the surface to be observed. Further, in this case, the base end portion 27 of the image guide 5 does not rotate. Therefore, since the image guide 5 is twisted as shown in FIG. 4, the twist angle θ
By making the length L of the image guide 5 sufficiently long so that the angle is a slight angle, the image guide 5 can be prevented from being damaged.
本発明は図示の実施例に限定されず、本発明の
要旨を逸脱しない範囲で設計変更自由であり、例
えば、イメージガイド５の先端部１９と挿入ガイ
ド管２の先端部６との固定には、図例のような先
端部材１７を使用せず、粘着テープ、締付けバン
ド等にて固定するも自由であり、また、イメージ
ガイド５の対物部１６より先端の先端部１９は、
画像観察には関係がない部位であるので、ビス等
の固定具にて固定するも自由である。なお、これ
らの場合、イメージガイド５と挿入ガイド管２と
の間の空隙部が大きいときには、該空隙部にスペ
ーサを介装するも好ましい。また、イメージガイ
ド５の基端部２７が回転しないものであれば、基
端部材４の小径部６に軸受等の枢支部材を付設し
て、該基端部材４が、該シール部材２４にて密封
された状態にて、回転自在とされるようにするも
自由であり、さらに、挿入ガイド管２を基端部材
４に回転自在として取付けるも自由である。 The present invention is not limited to the illustrated embodiment, and the design may be changed without departing from the gist of the present invention. , instead of using the tip member 17 as shown in the figure, it is possible to fix it with adhesive tape, a tightening band, etc. Also, the tip part 19 of the image guide 5 which is distal from the objective part 16 is
Since this part is not related to image observation, it is free to fix it with fixing tools such as screws. In these cases, when the gap between the image guide 5 and the insertion guide tube 2 is large, it is also preferable to insert a spacer in the gap. If the base end 27 of the image guide 5 does not rotate, a pivot member such as a bearing may be attached to the small diameter portion 6 of the base member 4 so that the base end member 4 is attached to the seal member 24. The insertion guide tube 2 may be freely rotatable in a sealed state, and the insertion guide tube 2 may also be freely rotatably attached to the proximal end member 4.
本発明のケーブル入線孔の点検装置は、挿入ガ
イド管２の基端３側から回転させて該挿入ガイド
管２の先端部１９を回転させれば、イメージガイ
ド５の先端部１９が該挿入ガイド管２の先端部６
と一体状に回転するので、挿入ガイド管２の窓部
８を観察したい被観察部に向ければ、イメージガ
イド５の先端部１９に設けられた対物部１６を該
被観察部に向けることができ、常に、被観察部−
つまり、ケーブル入線孔１に生じた段差やクラツ
ク−を正面からの画像としてとらえることがで
き、該段差やクラツクを確実に発見することがで
きる。また、イメージガイド５は挿入ガイド管２
内に挿入されているので、ケーブル入線孔１の内
周壁２５とケーブル２４の外周面２６の狭い隙間
部に落ち込まず、該イメージガイド５は常に広い
視野を確保することができる。従つて、この点検
装置によれば、観察したい被観察部を簡単かつ迅
速にしかも確実に観察することができる。また、
イメージガイド５の基端部２７は回転しないの
で、該基端部２７に付設されるカメラ等の機器類
の連結構造は簡単なものとなる。さらに、イメー
ジガイド５は挿入ガイド管２に挿入されているの
で、該イメージガイド５の損傷を防止出来る。
In the cable entry hole inspection device of the present invention, when the distal end portion 19 of the insertion guide tube 2 is rotated from the proximal end 3 side of the insertion guide tube 2, the distal end portion 19 of the image guide 5 is rotated from the side of the proximal end 3 of the insertion guide tube 2. Tip 6 of tube 2
Since the insertion guide tube 2 rotates integrally with the image guide tube 2, by pointing the window 8 of the insertion guide tube 2 toward the part to be observed, the objective part 16 provided at the tip 19 of the image guide 5 can be directed to the part to be observed. , always the observed part −
In other words, it is possible to capture a step or crack occurring in the cable entry hole 1 as an image from the front, and it is possible to reliably discover the step or crack. In addition, the image guide 5 is inserted into the insertion guide tube 2.
Since the image guide 5 is inserted inside, it does not fall into the narrow gap between the inner peripheral wall 25 of the cable entry hole 1 and the outer peripheral surface 26 of the cable 24, and the image guide 5 can always secure a wide field of view. Therefore, with this inspection device, the part to be observed can be observed easily, quickly, and reliably. Also,
Since the base end 27 of the image guide 5 does not rotate, the connection structure for devices such as cameras attached to the base end 27 is simple. Furthermore, since the image guide 5 is inserted into the insertion guide tube 2, damage to the image guide 5 can be prevented.
第１図は本発明に係る一実施例を示す拡大断面
図、第２図はケーブル入線孔の点検状態を示す簡
略横断面図、第３図は簡略断面図、第４図はイメ
ージガイドのねじれ状態を示す平面図である。
２……挿入ガイド管、３……基端、５……イメ
ージガイド、６……先端部、７……周壁、８……
窓部、１９……先端部。
Fig. 1 is an enlarged cross-sectional view showing an embodiment of the present invention, Fig. 2 is a simplified cross-sectional view showing the inspection state of the cable entry hole, Fig. 3 is a simplified cross-sectional view, and Fig. 4 is the torsion of the image guide. It is a top view showing a state. 2...Insertion guide tube, 3...Proximal end, 5...Image guide, 6...Distal end, 7...Peripheral wall, 8...
Window section, 19...Tip section.
Claims (1)
成樹脂からなる挿入ガイド管と、 該挿入ガイド管の基端側から挿入され、該挿入
ガイド管の上記窓部からの側視が可能なように、
先端部のみが該挿入ガイド管の先端部に固定され
るイメージガイドと、 を備えたことを特徴とするケーブル入線孔の点検
装置。[Scope of Claims] 1. An insertion guide tube made of flexible synthetic resin and having a window in the peripheral wall of its distal end; and an insertion guide tube that is inserted from the proximal end of the insertion guide tube and that has a window in the peripheral wall of the insertion guide tube. To enable side view from the
An inspection device for a cable entry hole, comprising: an image guide whose tip only is fixed to the tip of the insertion guide tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61247056A JPS63103612A (en) | 1986-10-16 | 1986-10-16 | Inspecting apparatus of cable entrance hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61247056A JPS63103612A (en) | 1986-10-16 | 1986-10-16 | Inspecting apparatus of cable entrance hole |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63103612A JPS63103612A (en) | 1988-05-09 |
| JPH0350486B2 true JPH0350486B2 (en) | 1991-08-01 |
Family
ID=17157763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61247056A Granted JPS63103612A (en) | 1986-10-16 | 1986-10-16 | Inspecting apparatus of cable entrance hole |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63103612A (en) |
-
1986
- 1986-10-16 JP JP61247056A patent/JPS63103612A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63103612A (en) | 1988-05-09 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |