JPH0411158Y2 - - Google Patents
Info
- Publication number
- JPH0411158Y2 JPH0411158Y2 JP707185U JP707185U JPH0411158Y2 JP H0411158 Y2 JPH0411158 Y2 JP H0411158Y2 JP 707185 U JP707185 U JP 707185U JP 707185 U JP707185 U JP 707185U JP H0411158 Y2 JPH0411158 Y2 JP H0411158Y2
- Authority
- JP
- Japan
- Prior art keywords
- outer cylinder
- guide
- inner cylinder
- cylinder
- steel pipe
- 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
Links
- 238000007689 inspection Methods 0.000 claims description 18
- 238000003780 insertion Methods 0.000 claims description 12
- 230000037431 insertion Effects 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 7
- 238000012360 testing method Methods 0.000 claims 5
- 229910000831 Steel Inorganic materials 0.000 description 59
- 239000010959 steel Substances 0.000 description 59
- 239000012530 fluid Substances 0.000 description 10
- 230000002093 peripheral effect Effects 0.000 description 10
- 239000000463 material Substances 0.000 description 7
- 238000004080 punching Methods 0.000 description 3
- 229920003002 synthetic resin Polymers 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/04—Wave modes and trajectories
- G01N2291/044—Internal reflections (echoes), e.g. on walls or defects
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Description
【考案の詳細な説明】
産業上の利用分野
本考案は、都市ガスなどの流体を輸送する地中
埋設鋼管の管内検査修繕などをする場合に、テレ
ビカメラなどの検査機器を管内に挿入または管内
から回収するのを円滑に行なうための装置に関す
る。[Detailed description of the invention] Industrial application field This invention is useful when inspecting and repairing underground steel pipes that transport fluids such as city gas, by inserting inspection equipment such as a television camera into the pipes, or It relates to a device for smoothly recovering from.
背景技術
従来から、たとえば都市ガスなどを輸送する地
中埋設鋼管の保守点検時には、地中埋設鋼管によ
る都市ガスの輸送を遮断しなければならなかつ
た。すなわち管内が検査されるべき地中埋設鋼管
の領域における両端部に立坑を形成し、立坑に露
出する地中埋設鋼管の部分を切断して立坑間の都
市ガスを排出した後に、地中埋設鋼管の切断して
分離された部分の管内を検査するようにしてい
る。BACKGROUND ART Conventionally, for example, during maintenance and inspection of underground steel pipes that transport city gas, it has been necessary to shut off the transport of city gas through the underground steel pipes. In other words, a vertical shaft is formed at both ends of the area of the underground steel pipe where the inside of the pipe is to be inspected, and after cutting the portion of the underground steel pipe exposed to the shaft and discharging the city gas between the shafts, the underground steel pipe is inspected. The inside of the pipe is inspected after cutting and separating the parts.
考案が解決しようとする問題点
このような先行技術では、立坑を２つ掘削しな
ければならず作業性が劣る。また、前述したよう
に地中埋設鋼管の下流側には都市ガスが供給され
ないので、常時都市ガスを使用している地域にお
いてはバイパス管を設けなければならなくなる。
さらに管内の検査が終了した後に、切断した管の
復旧作業が煩雑であつた。Problems to be solved by the invention In this prior art, two vertical shafts must be excavated, resulting in poor workability. Further, as mentioned above, since city gas is not supplied downstream of the underground steel pipe, bypass pipes must be installed in areas where city gas is constantly used.
Furthermore, after the inspection of the inside of the pipe was completed, the work to restore the cut pipe was complicated.
したがつて本考案の目的は、都市ガスなどの流
体の輸送を遮断することなくテレビカメラなどの
検査機器を管内に挿入または管内から回収するこ
とができるようにした作業性を向上した検査機器
の管内挿入・回収装置を提供することである。 Therefore, the purpose of the present invention is to develop an inspection device with improved workability that allows inspection devices such as a television camera to be inserted into and retrieved from the pipe without interrupting the transportation of fluids such as city gas. An object of the present invention is to provide an intraductal insertion/retrieval device.
問題点を解決するための手段
本考案は、
(a) 管の対向する両側でその管の外壁に当接する
一対の半割部材とこれらの半割部材を相互に近
接方向に締付ける締付手段とを有し、一方の半
割部材に接続口が形成されている基体と、
(b) 軸線方向の一方端が前記接続口に臨む開口端
を有し、基体に取付けられる外筒と、
(c) 基体と外筒の間に介在し、基体の接続口と外
筒の開口端とを開閉操作する遮蔽板を有する遮
蔽手段と、
(d) 外筒内にあり、外筒の軸線方向に変位可能に
設けられ、基体の接続口に臨む側が開放してい
る内筒と、
(e) 内筒の開放端に連設される起端部を有し、内
筒の軸線に対して円滑に屈曲し、起端部から遊
端部に亘つて外筒の内径およびその仮想延長線
上の範囲内にある案内部材と、
(f) 前記案内部材に弾発的に検査機器を付勢する
弾性付勢手段とを含むことを特徴とする検査機
器の管内挿入・回収装置である。Means for Solving the Problems The present invention comprises: (a) a pair of half members abutting the outer wall of the pipe on opposite sides of the pipe; and a tightening means for tightening these half members in a direction close to each other; (b) an outer cylinder having an open end with one axial end facing the connection port and attached to the base; (c ) a shielding means interposed between the base body and the outer cylinder and having a shielding plate for opening and closing the connection port of the base body and the open end of the outer cylinder; (d) a shielding means disposed within the outer cylinder and displaced in the axial direction of the outer cylinder; (e) has a starting end connected to the open end of the inner cylinder and can be smoothly bent with respect to the axis of the inner cylinder; (f) an elastic biasing member that resiliently biases the inspection device against the guide member; This is an apparatus for inserting and retrieving an inspection device into a pipe, characterized by comprising means.
また本発明は、前記案内部材には、前記内筒寄
りに開放した円弧状の面が形成されていることを
特徴とする。 Further, the present invention is characterized in that the guide member is formed with an arcuate surface that is open toward the inner cylinder.
また本発明は、前記案内部材には、検査機器が
案内される面に臨んでボールベアリングが設けら
れていることを特徴とする。 Further, the present invention is characterized in that the guide member is provided with a ball bearing facing the surface on which the inspection equipment is guided.
また本発明は、前記弾性付勢手段は案内部材に
形成されていることを特徴とする。 Further, the present invention is characterized in that the elastic biasing means is formed on a guide member.
また本発明は、前記弾性付勢手段は内筒に形成
されていることを特徴とする。 Further, the present invention is characterized in that the elastic biasing means is formed in the inner cylinder.
また本発明は、前記外筒には案内外筒が形成さ
れており、その案内外筒を内挿する案内内筒とは
シール構造となつていることを特徴とする。 Further, the present invention is characterized in that the outer cylinder is formed with a guide outer cylinder, and has a sealing structure with the guide inner cylinder into which the guide outer cylinder is inserted.
作 用
本考案に従えば、内筒の開放端に連設される起
端部を有し、内筒の軸線に対して円滑に屈曲し、
起端から遊端に亘つて外筒の内径およびその仮想
延長線上の範囲にある案内部材と、その案内部材
側に弾発的に検査機器を付勢する弾性付勢手段と
を設けたので、検査機器が管内に円滑に挿入また
は管内から回収されるようになる。Effect According to the present invention, the inner cylinder has a starting end connected to the open end thereof, is smoothly bent with respect to the axis of the inner cylinder,
Since a guide member is provided that extends from the starting end to the free end in a range on the inner diameter of the outer cylinder and its virtual extension line, and an elastic biasing means that elastically biases the inspection equipment toward the guide member, The inspection device can be smoothly inserted into or retrieved from the pipe.
実施例
第１図は、本考案の一実施例の分解斜視図であ
る。本考案に従う装置１は、基本的に基体２と、
基体２に取付けられる遮蔽部材４と、遮蔽部材４
に取付けられる外筒５と、外筒内に収納され外筒
５の軸線方向に移動可能な内筒６と、内筒６の開
放端に連設される案内部材７と、検査機器として
のテレビカメラ８とを含む。Embodiment FIG. 1 is an exploded perspective view of an embodiment of the present invention. The device 1 according to the invention basically comprises a base body 2;
A shielding member 4 attached to the base 2 and a shielding member 4
An outer cylinder 5 attached to the outer cylinder 5, an inner cylinder 6 housed in the outer cylinder and movable in the axial direction of the outer cylinder 5, a guide member 7 connected to the open end of the inner cylinder 6, and a television serving as an inspection device. camera 8.
基体２は、上半割部１２と下半割部１３とを有
する。上半割部１２は地中埋設鋼管９を外囲する
半割り状の管外囲部１４，１５を有し、管外囲部
１４，１５間には、上方に突出する内側にねじを
切つた開口部１６が形成されている。また上半割
部１２には地中埋設鋼管の軸線方向に延びる一対
の取付片１７，１８が形成されており、取付片１
７，１８にはそれぞれ複数（この実施例では４）
のボルト挿通孔２０が穿設されている。下半割部
１３は地中埋設鋼管９を外囲する半割り状の管外
囲部２１，２２を有し、管外囲部２１，２２間に
は、凹所２３が形成されている。下半割部１３に
おいても上半割部１２と同様に一対の取付片２
４，２５が形成されており、この取付片２４，２
５には、取付片１７，１８と対応した位置にボル
ト挿通孔２６が形成されている。基体２は、上半
割部１２と下半割部１３とで地中埋設鋼管９を外
囲した状態で、ボルト挿通孔２０，２６にボルト
を挿通し、そのボルトに螺合するナツトの組合せ
によつて締付け固定される。その際、上半割部１
２および下半割部１３は、地中埋設鋼管９とシー
ル構造となつている。したがつて地中埋設鋼管９
に基体２を締付け固定した後に、仮想線２７，２
７ａで示される部分で地中埋設鋼管９が切断され
ても、地中埋設鋼管９内を流過する都市ガスなど
の流体は、外部へ漏洩するのが防がれる。 The base body 2 has an upper half section 12 and a lower half section 13. The upper half part 12 has half-shaped pipe outer surrounding parts 14 and 15 surrounding the underground steel pipe 9, and between the pipe outer surrounding parts 14 and 15, a thread is cut on the inside that projects upward. An ivy opening 16 is formed. Furthermore, a pair of mounting pieces 17 and 18 are formed in the upper half portion 12 and extend in the axial direction of the underground steel pipe.
7 and 18 each have a plurality of numbers (4 in this example)
A bolt insertion hole 20 is bored. The lower half part 13 has half-shaped pipe outer surrounding parts 21 and 22 surrounding the underground steel pipe 9, and a recess 23 is formed between the pipe outer surrounding parts 21 and 22. Similarly to the upper half part 12, the lower half part 13 also has a pair of mounting pieces 2.
4, 25 are formed, and these mounting pieces 24, 2
5 has a bolt insertion hole 26 formed at a position corresponding to the mounting pieces 17 and 18. The base body 2 has an upper half part 12 and a lower half part 13 surrounding the underground steel pipe 9, and a combination of nuts that are inserted into bolt insertion holes 20 and 26 and screwed into the bolts. It is tightened and fixed by. At that time, upper half part 1
2 and the lower half portion 13 have a sealing structure with the underground steel pipe 9. Therefore, underground steel pipe 9
After tightening and fixing the base 2, the imaginary lines 27, 2
Even if the underground steel pipe 9 is cut at the part indicated by 7a, the fluid such as city gas flowing through the underground steel pipe 9 is prevented from leaking to the outside.
上半割部１２の基材２の開口部１６には、遮蔽
部材４が固定部材２８によつて固定される。固定
部材２８は、固定片２９と、固定片２９に固着さ
れた一対のねじ棒３０，３１とを有する。ねじ棒
３０，３１は遮蔽部材４のハウジング３２に形成
された一対の係止片３３，３４の切欠３３ａ，３
４ａに嵌り込む。地中埋設鋼管９に基体２を取付
けた後に、基体２を固定部材２８と遮蔽部材４と
の間に挟持した状態で、ねじ棒３０，３１に螺合
する蝶ナツト３５，３６を螺進することによつ
て、遮蔽部材４は基体２に取付けられる。基体２
に遮蔽部材４を取付た状態では、遮蔽部材４の開
口部３６は基材２の開口部１６と連通する。 The shielding member 4 is fixed to the opening 16 of the base material 2 of the upper half portion 12 by a fixing member 28 . The fixing member 28 includes a fixing piece 29 and a pair of threaded rods 30 and 31 fixed to the fixing piece 29. The threaded rods 30 and 31 fit into the notches 33a and 3 of a pair of locking pieces 33 and 34 formed in the housing 32 of the shielding member 4.
It fits into 4a. After attaching the base body 2 to the underground steel pipe 9, with the base body 2 sandwiched between the fixing member 28 and the shielding member 4, the wing nuts 35 and 36 that are screwed onto the threaded rods 30 and 31 are screwed. Thereby, the shielding member 4 is attached to the base body 2. Base body 2
When the shielding member 4 is attached to the base material 2, the opening 36 of the shielding member 4 communicates with the opening 16 of the base material 2.
第２図は遮蔽部材４の平面図であり、第３図は
その断面図である。遮蔽部材４はその本体と成る
ハウジング３２と、ハウジング３２内に移動可能
に収納される円板状の遮蔽板４２とを有する。ハ
ウジング３２には、前述したように開口部３６と
一対の係止片３３，３４とが形成されている。ま
た、ハウジング３２の上端面３２ａには複数（こ
の実施例では３）のねじ棒４３ａ〜４３ｃが固定
されている。このねじ棒４３ａ〜４３ｃは、ハウ
ジング３２に外筒５を取付ける際に、第１図に示
した取付部材４７の係止用切欠４８ａ〜４８ｃに
それぞれ嵌り込む。すなわちハウジング３２上に
外筒５を取付ける際には、取付部材４７の挿通孔
４７ａに外筒５を挿通し、外筒５の開放端部に形
成された外向きフランジ５ａの上面を取付部材４
７で押圧した状態で、ねじ棒４３ａ〜４３ｃに螺
合する蝶ナツト４４ａ〜４４ｃを螺進することに
よつて、遮蔽部材４のハウジング３２上に外筒５
が固定される。遮蔽部材４の遮蔽板４２はハウジ
ング３２に形成された空間４９内を移動可能であ
り、ハウジング３２に形成された開口部３６を開
放または遮蔽する。遮蔽板４２には、操作棒４５
が連設されており、操作棒４５の遊端部はハウジ
ング３２よりも外方に突出している。操作棒４５
の遊端部には、つまみ４６が形成されている。つ
まみ４６を手で持つて、ハウジング３２から離反
する方向に操作棒４５を引張ることによつて開口
部３６は開放され、ハウジング３２寄りに操作棒
４５を押込むことによつて開口部３６は遮蔽され
る。遮蔽板４２の第３図における上面には環状の
シール部材５０が固着されており、このシール部
材５０によつて遮蔽板４２を閉じた状態では、ハ
ウジング３２の開口部３６と遮蔽板４２との間は
封止されている。したがつて、地中埋設鋼管９か
らの都市ガスなどの流体は、遮蔽部材４によつて
確実に遮蔽される。開口部３６の下方の周縁に
は、環状凹所５１が形成されている。環状凹所５
１には、ゴム製のＯリング５２が固着されてい
る。この環状凹所５１には、基体２に遮蔽部材４
を取付ける際に、基体２の基材２の開口部１６の
上端部が嵌り込む（後述の第４図参照）。環状凹
所５１に基材２の開口部１６の上端部が嵌り込ん
だ状態では、Ｏリング５２によつて基体２と遮蔽
部材４とは確実に封止されており、したがつて地
中埋設鋼管９から基材２の開口部１６を介する都
市ガスなどの流体は、環状凹所５１付近から漏洩
するのが防がれる。 FIG. 2 is a plan view of the shielding member 4, and FIG. 3 is a sectional view thereof. The shielding member 4 has a housing 32 serving as its main body, and a disc-shaped shielding plate 42 movably housed within the housing 32. As described above, the housing 32 is formed with an opening 36 and a pair of locking pieces 33, 34. Further, a plurality of (three in this embodiment) threaded rods 43a to 43c are fixed to the upper end surface 32a of the housing 32. The threaded rods 43a to 43c fit into the locking notches 48a to 48c of the mounting member 47 shown in FIG. 1, respectively, when the outer cylinder 5 is attached to the housing 32. That is, when mounting the outer cylinder 5 on the housing 32, the outer cylinder 5 is inserted into the insertion hole 47a of the mounting member 47, and the upper surface of the outward flange 5a formed at the open end of the outer cylinder 5 is attached to the mounting member 4.
7, by screwing the wing nuts 44a to 44c that are engaged with the threaded rods 43a to 43c, the outer cylinder 5 is placed on the housing 32 of the shielding member 4.
is fixed. The shielding plate 42 of the shielding member 4 is movable within a space 49 formed in the housing 32, and opens or shields the opening 36 formed in the housing 32. The shielding plate 42 has an operation rod 45.
are connected to each other, and the free end of the operating rod 45 protrudes outward from the housing 32. Operation rod 45
A knob 46 is formed at the free end. The opening 36 is opened by holding the knob 46 and pulling the operating rod 45 in a direction away from the housing 32, and the opening 36 is closed by pushing the operating rod 45 toward the housing 32. be done. An annular sealing member 50 is fixed to the upper surface of the shielding plate 42 in FIG. The space between them is sealed. Therefore, fluid such as city gas from the underground steel pipe 9 is reliably shielded by the shielding member 4. An annular recess 51 is formed in the lower peripheral edge of the opening 36 . Annular recess 5
1, a rubber O-ring 52 is fixed. This annular recess 51 has a shielding member 4 attached to the base 2.
When attaching the base member 2, the upper end of the opening 16 of the base member 2 fits into the base member 2 (see FIG. 4, which will be described later). When the upper end of the opening 16 of the base material 2 is fitted into the annular recess 51, the base material 2 and the shielding member 4 are reliably sealed by the O-ring 52. Fluid such as city gas passing from the steel pipe 9 through the opening 16 of the base material 2 is prevented from leaking from the vicinity of the annular recess 51.
第４図は、内筒６、案内部材７およびテレビカ
メラ８を内装した外筒５を遮蔽部材４に取付けた
状態を示す断面図である。第１図を同時に参照し
て、外筒５は大略有底筒状であつて、基体２に臨
む側が開放している。外筒５の開放端部には前述
したように外向きフランジ５ａが形成されてい
る。外向きフランジ５ａの下端面は遮蔽部材４の
ハウジング３２の上端面３２ａと当接し、外向き
フランジ５ａの上端面は取付部材４７が当接す
る。外筒５の頂壁５ｂには、外筒５の軸線に関し
て偏心した案内外筒５４が形成されている。この
案内外筒５４内には、有底筒状の内筒６の頂壁６
ａに形成された案内内筒５５が挿通する。案内外
筒５４の内周面には、環状のシール部材５８がそ
の軸線方向に間隔をあけて固着されており、案内
外筒５４に案内内筒５５を挿通した状態では、そ
の間は封止されている。したがつて、都市ガスな
どの流体が漏洩するのが防がれる。案内外筒５４
には、その軸線に垂直な軸線を有する筒状の内ね
じ部材５４ａが形成される。この内ねじ部材５４
ａには、係止ボルト５３が螺合する。この係止ボ
ルト５３は内筒６を予め定められた位置に固定す
るためのものであり、係止ボルト５３の先端は内
筒６の案内内筒５５の外周面に当接する。 FIG. 4 is a sectional view showing a state in which the outer cylinder 5, in which the inner cylinder 6, the guide member 7, and the television camera 8 are installed, is attached to the shielding member 4. Referring to FIG. 1 at the same time, the outer cylinder 5 is approximately cylindrical with a bottom, and the side facing the base body 2 is open. The open end of the outer cylinder 5 is formed with an outward flange 5a as described above. The lower end surface of the outward flange 5a abuts the upper end surface 32a of the housing 32 of the shielding member 4, and the upper end surface of the outward flange 5a abuts the mounting member 47. A guide outer cylinder 54 eccentric with respect to the axis of the outer cylinder 5 is formed on the top wall 5b of the outer cylinder 5. Inside this guide outer cylinder 54, there is a top wall 6 of an inner cylinder 6 having a bottomed cylindrical shape.
A guide inner cylinder 55 formed at a is inserted. Annular seal members 58 are fixed to the inner peripheral surface of the guide outer cylinder 54 at intervals in the axial direction, and when the guide inner cylinder 55 is inserted into the guide outer cylinder 54, the space between them is sealed. ing. Therefore, fluid such as city gas is prevented from leaking. Guide outer cylinder 54
A cylindrical internally threaded member 54a having an axis perpendicular to the axis is formed in the cylindrical member 54a. This internal thread member 54
A locking bolt 53 is screwed into a. This locking bolt 53 is for fixing the inner cylinder 6 at a predetermined position, and the tip of the locking bolt 53 comes into contact with the outer peripheral surface of the guide inner cylinder 55 of the inner cylinder 6.
第５図は内筒６の断面図であり、第６図は第５
図の切断面線−から見た断面図である。第１
図および第４図を同時に参照して、内筒６は大略
有底筒状であつて、基体２に臨む側に開放してい
る。内筒６は外筒５内に収納され、外筒５の軸線
方向に移動可能である。内筒６の頂壁６ａには前
述したように案内内筒５５が形成されており、こ
の案内内筒５５内には、検査機器としてのテレビ
カメラ８のコイル状案内管５６が挿通する。この
コイル状案内管５６は、コイル素線が軸線方向に
密接しているものである。コイル素線は、銅線の
外周に合成樹脂製被覆層が形成されて成る。コイ
ル状案内管５６内には、テレビカメラ８に電気信
号を導く可撓性を有するケーブル５７が緩やかに
挿通する。コイル状案内管５６はコイル素線が軸
線方向に密接して形成されているので、案内内筒
５５の軸線に沿つてコイル状案内管５６を押し込
む際に、大きな力で押込むことができる。またコ
イル状であるので、コイル状案内管５６は可撓性
を有するようにすることができ、テレビカメラ８
の方向を自由に変化させることができる。案内内
筒５５の外周面には、第１図に示すようにマーク
５５ａ設けられている。マーク５５ａは、内管６
を外管５の一定位置に係止するときに目印となる
のである。すなわち内管６を外筒５の軸線に沿つ
て下方に移動させ、マーク５５ａを案内外筒５４
の上端部と一致させて係止ボルト５３を螺進して
外管５に内管６を係止するものである。 5 is a sectional view of the inner cylinder 6, and FIG. 6 is a sectional view of the inner cylinder 6.
It is a sectional view seen from the cutting plane line - of the figure. 1st
Referring to the drawing and FIG. 4 at the same time, the inner cylinder 6 has a generally bottomed cylindrical shape and is open on the side facing the base body 2. As shown in FIG. The inner cylinder 6 is housed within the outer cylinder 5 and is movable in the axial direction of the outer cylinder 5. As described above, the guide inner tube 55 is formed on the top wall 6a of the inner tube 6, and the coiled guide tube 56 of the television camera 8 as an inspection device is inserted into the guide inner tube 55. In this coiled guide tube 56, the coil wires are in close contact with each other in the axial direction. The coil wire is formed by forming a synthetic resin coating layer around the outer periphery of a copper wire. A flexible cable 57 that guides electrical signals to the television camera 8 is gently inserted into the coiled guide tube 56 . Since the coiled guide tube 56 is formed so that the coil wires are closely spaced in the axial direction, the coiled guide tube 56 can be pushed in with a large force along the axis of the guide inner cylinder 55. Further, since it is coiled, the coiled guide tube 56 can be made flexible, and the television camera 8
The direction of can be changed freely. Marks 55a are provided on the outer peripheral surface of the guide inner cylinder 55, as shown in FIG. The mark 55a is the inner tube 6
This serves as a mark when locking the outer tube 5 at a certain position. That is, the inner tube 6 is moved downward along the axis of the outer tube 5, and the mark 55a is aligned with the guide outer tube 54.
The inner tube 6 is locked to the outer tube 5 by screwing the locking bolt 53 so that it coincides with the upper end of the inner tube 5.
内筒６には、その開放端６ａに連設される起端
部７ｃを有し、内筒の軸線に対して円滑に屈曲
し、起端部７ｃから遊端部７ｂに亘つて外筒５の
内径およびその仮想延長線上の範囲内にある案内
部材７が設けられている。この案内部材７は、テ
レビカメラ８を地中埋設鋼管９内に円滑に案内す
るためのものである。案内部材７は内筒６の軸線
に対し円滑に屈曲した案内面７ａを有する。この
案内面７ａは、内管６寄りに開放した円弧状であ
る。案内部材７の途中にはコイル５９が設けられ
ている。コイル５９には、弾発性を有する複数
（この実施例では３）のリング６０が穏やかに外
挿する。コイル５９およびリング６０は、案内部
材７に沿つて案内されるテレビカメラ８を案内部
材７側に弾発的に付勢するためのものである。 The inner cylinder 6 has a starting end 7c connected to the open end 6a, and is smoothly bent with respect to the axis of the inner cylinder, and the outer cylinder 5 extends from the starting end 7c to the free end 7b. A guide member 7 is provided that has an inner diameter within the range of the inner diameter and an imaginary extension thereof. This guide member 7 is for smoothly guiding the television camera 8 into the underground steel pipe 9. The guide member 7 has a guide surface 7a that is smoothly bent with respect to the axis of the inner cylinder 6. This guide surface 7a has an arcuate shape that opens toward the inner tube 6. A coil 59 is provided in the middle of the guide member 7. A plurality (three in this embodiment) of elastic rings 60 are gently inserted into the coil 59 . The coil 59 and the ring 60 are used to elastically urge the television camera 8 guided along the guide member 7 toward the guide member 7 side.
このような装置１を用いて、検査機器としての
テレビカメラ８を地中埋設鋼管９に挿入または地
中埋設鋼管９から回収する作業を以下に述べる。
第７図は、作業手順を示す断面図である。まず第
７図１に示すように、検査されるべき地中埋設鋼
管９付近に立坑６２を掘削する。本考案に従え
ば、地中埋設鋼管９の管内を検査するに当たつ
て、地中埋設鋼管９はその内部を流過する都市ガ
スなどの流体を遮断することなく切断される。第
７図１に示した状態から、基体２が地中埋設鋼管
９の外壁に取付けられる。地中埋設鋼管９に取付
けられた基体２には、遮蔽部材４が取付けられ
る。この遮蔽部材４には穿孔装置６３の取付筒６
４が取付けられる。このようにして、第７図２の
状態にされる。なお取付筒６４は、前記外筒５と
同様の形状を有し、その取付状態は外筒５の取付
状態と同様である。取付筒６４を取付ける際に
は、遮蔽部材４はその開口部３６が遮蔽された状
態であり、取付筒６４を取付けた後に遮蔽板４２
を移動し遮蔽部材４の開口部３６が開放される。
遮蔽部材４の開口部３６が開放された状態で、穿
孔装置６３のホルソ６７を下方に移動して電動機
６５を駆動する。電動機６５を駆動することによ
つて、電動機６５の駆動力は駆動軸６６を介して
ホルソ６７に与えられ、ホルソ６７は地中埋設鋼
管９を切断する。地中埋設鋼管９が切断された後
に、ホルソ６７を取付筒６４内に移動して遮蔽部
材４の開口部３６を閉じる。遮蔽部材４の開口部
３６を閉じた後に、穿孔装置６３の取付筒６４を
取外す。地中埋設鋼管９を切断した際に生じる切
屑は、第７図３に示す状態で除去される。すなわ
ちホルソ６７で地中埋設鋼管９を切断した後に、
穿孔装置６３は遮蔽部材４から取外され、遮蔽部
材４には手動作業具６９が取付けられる。手動作
業具６９は大略筒状であつて、その上端部はゴム
性の薄膜７０によつて覆われている。薄膜７０は
その中央付近に手が入るだけの切欠が形成されて
おり、薄膜７０の切欠に手を入れた状態では、手
動作業具６９内に流入する都市ガスなどの流体は
外部に漏洩するのが防がれる。手動作業具６９の
外周面には、有底筒状の収納部７１が突出して形
成されている。薄膜７０の切欠に手を入れて、先
端に磁石７４が固着されている作業棒７３を手で
持つて遮蔽部材４の開口部３６を開く。作業棒７
３の磁石７４に地中埋設鋼管９の切屑を吸着させ
て、切屑を収納部７１内に収納する。このように
して、地中埋設鋼管９を切断したときに生ずる切
屑は除去される。 The operation of inserting the television camera 8 as an inspection device into or recovering the underground steel pipe 9 from the underground steel pipe 9 using such an apparatus 1 will be described below.
FIG. 7 is a sectional view showing the working procedure. First, as shown in FIG. 71, a vertical shaft 62 is excavated near the underground steel pipe 9 to be inspected. According to the present invention, when inspecting the inside of the underground steel pipe 9, the underground steel pipe 9 is cut without interrupting the fluid such as city gas flowing through the underground steel pipe 9. From the state shown in FIG. 71, the base body 2 is attached to the outer wall of the underground steel pipe 9. A shielding member 4 is attached to the base body 2 attached to the underground steel pipe 9. This shielding member 4 has a mounting tube 6 for a punching device 63.
4 is installed. In this way, the state shown in FIG. 72 is achieved. Note that the mounting tube 64 has the same shape as the outer tube 5, and its attached condition is the same as that of the outer tube 5. When attaching the mounting tube 64, the opening 36 of the shielding member 4 is in a state of being shielded, and after the attachment tube 64 is attached, the shielding plate 42 is closed.
is moved, and the opening 36 of the shielding member 4 is opened.
With the opening 36 of the shielding member 4 open, the hole 67 of the punching device 63 is moved downward to drive the electric motor 65. By driving the electric motor 65, the driving force of the electric motor 65 is applied to the bolt 67 via the drive shaft 66, and the bolt 67 cuts the underground steel pipe 9. After the underground steel pipe 9 is cut, the forso 67 is moved into the mounting tube 64 and the opening 36 of the shielding member 4 is closed. After closing the opening 36 of the shielding member 4, the mounting tube 64 of the punching device 63 is removed. The chips generated when the underground steel pipe 9 is cut are removed in the state shown in FIG. 73. That is, after cutting the underground steel pipe 9 with the Holso 67,
The drilling device 63 is removed from the shielding member 4, and a manual work tool 69 is attached to the shielding member 4. The manual work tool 69 has a generally cylindrical shape, and its upper end is covered with a rubber thin film 70. The thin membrane 70 has a notch near its center that allows you to insert your hand, and if you insert your hand into the notch in the thin membrane 70, the fluid such as city gas flowing into the manual work tool 69 will not leak to the outside. is prevented. A bottomed cylindrical storage portion 71 is formed protruding from the outer peripheral surface of the manual work tool 69 . Open the opening 36 of the shielding member 4 by inserting your hand into the notch in the thin film 70 and holding the work rod 73 to which the magnet 74 is fixed at the tip. work rod 7
The chips of the underground steel pipe 9 are attracted to the magnet 74 of No. 3, and the chips are stored in the storage section 71. In this way, chips generated when the underground steel pipe 9 is cut are removed.
第７図１〜第７図３に示した一連の作業によつ
て、地中埋設鋼管９は切断される。その後、遮蔽
部材４の開口部３６を遮蔽板４２で遮蔽し、手動
作業具６９を遮蔽部材４から取外す。次に、第７
図４に示すように遮蔽部材４上に外筒５を取付け
る。外筒５内には内筒６が内挿されており、この
内筒６にはテレビカメラ８が内挿入されている。
遮蔽部材４に外筒５を取付る状態は、前述したと
おりである。遮蔽部材４に外筒５を取付け、遮蔽
部材４の開口部３６を解放する。その後、外筒５
の軸線方向に沿つて内筒６を下方に移動させる。
内筒６を下方に移動させて、内筒６の案内内筒５
に形成されたマーク５５ａが、外筒５の案内外筒
５４の上端面に位置したときに、係止ボルト５３
によつて内筒を外筒に固定する。 The underground steel pipe 9 is cut by a series of operations shown in FIGS. 71 to 73. Thereafter, the opening 36 of the shielding member 4 is shielded with the shielding plate 42, and the manual work tool 69 is removed from the shielding member 4. Next, the seventh
As shown in FIG. 4, an outer cylinder 5 is attached onto the shielding member 4. An inner cylinder 6 is inserted into the outer cylinder 5, and a television camera 8 is inserted into the inner cylinder 6.
The state in which the outer cylinder 5 is attached to the shielding member 4 is as described above. The outer cylinder 5 is attached to the shielding member 4, and the opening 36 of the shielding member 4 is opened. After that, the outer cylinder 5
The inner cylinder 6 is moved downward along the axial direction.
Move the inner cylinder 6 downward and guide the inner cylinder 5 of the inner cylinder 6.
When the mark 55a formed on the guide outer cylinder 54 of the outer cylinder 5 is located on the upper end surface of the guide outer cylinder 54, the locking bolt 53
The inner cylinder is fixed to the outer cylinder with.
テレビカメラ８を地中埋設管９内に挿入する状
態を、第８図に示す。内筒６に連設された案内部
材７の遊端部７ｂは、地中埋設鋼管９の下端面９
ａよりもわずかに上方に位置し、その段差はたと
えば1.5mm程度である。この状態で、コイル状案
内管５６を案内内筒５５内に沿つて押込み、テリ
ビカメラ８を案内部材７の案内面７ａに沿つて移
動させて地中埋設鋼管９内に挿入する。この際、
案内部材７の案内面７ａは内筒６の軸線に対して
円滑に屈曲しているので、テレビカメラ８は円滑
に地中埋設鋼管９内に挿入される。このとき、テ
レビカメラ８はコイル５９およびせリング６０に
よつて案内部材７の方向にばね付勢されており、
したがつて挿入時および回収時にテレビカメラ８
が地中埋設鋼管９の上端部９ｂに接触するのが防
がれる。 FIG. 8 shows a state in which the television camera 8 is inserted into the underground pipe 9. The free end 7b of the guide member 7 connected to the inner cylinder 6 is connected to the lower end surface 9 of the underground steel pipe 9.
It is located slightly above point a, and the height difference is, for example, about 1.5 mm. In this state, the coiled guide tube 56 is pushed into the guide inner cylinder 55, and the Teribi camera 8 is moved along the guide surface 7a of the guide member 7 and inserted into the underground steel pipe 9. On this occasion,
Since the guide surface 7a of the guide member 7 is smoothly bent with respect to the axis of the inner cylinder 6, the television camera 8 is smoothly inserted into the underground steel pipe 9. At this time, the television camera 8 is spring-biased in the direction of the guide member 7 by the coil 59 and the sheathing 60.
Therefore, the TV camera 8 is used during insertion and retrieval.
is prevented from coming into contact with the upper end 9b of the underground steel pipe 9.
地中埋設鋼管９内にテレビカメラ８を挿入して
地中埋設鋼管９の内周面を撮像し、地中埋設鋼管
９の腐食状態などを検査する。その状態を第７図
５に示す。このようにして、地中埋設鋼管９の第
７図における基体２から左方の部分が検査され
る。地中埋設鋼管９の第７図における基体２から
右方の部分を検査する際には、一旦テレビカメラ
８を内筒６内に収納して内筒６を外筒５の最上方
側に移動させ、遮蔽部材４の開口部３６を遮蔽し
て外筒５を取外して180度回転させてから再び取
付部材４７によつて遮蔽部材４のハウジング３２
上に外筒５を固定する。その後の一連の動作は前
述と同様であり、第７図６に示すように地中埋設
鋼管９の基体２から右方の部分が検査される。テ
レビカメラ８を地中埋設鋼管９内に挿入するとき
に、コイル状案内管５６は素線が軸線方向に密接
して形成されているので、基体２の位置より離れ
た位置までテレビカメラを挿入することができ
る。したがつて地中埋設鋼管９を検査する際に、
立坑６２を一箇所掘削するだけで、地中埋設鋼管
９の広範囲な管内検査を実現することができる。
このようにして地中埋設鋼管９の管内検査が行な
われる。 A television camera 8 is inserted into the underground steel pipe 9 to take an image of the inner peripheral surface of the underground steel pipe 9, and the state of corrosion of the underground steel pipe 9 is inspected. The state is shown in FIG. 7. In this way, the portion of the underground steel pipe 9 to the left of the base body 2 in FIG. 7 is inspected. When inspecting the right part of the underground steel pipe 9 from the base body 2 in FIG. Then, the opening 36 of the shielding member 4 is covered, the outer cylinder 5 is removed and rotated 180 degrees, and then the housing 32 of the shielding member 4 is attached again using the mounting member 47.
The outer cylinder 5 is fixed on top. The subsequent series of operations is the same as described above, and as shown in FIG. 7, the right portion of the underground steel pipe 9 from the base body 2 is inspected. When inserting the television camera 8 into the underground steel pipe 9, since the coiled guide tube 56 is formed with wires closely spaced in the axial direction, the television camera 8 can be inserted to a position farther from the base body 2. can do. Therefore, when inspecting the underground steel pipe 9,
By simply excavating one shaft 62, a wide range of internal inspections of underground steel pipes 9 can be realized.
In this way, the inside of the underground steel pipe 9 is inspected.
地中埋設鋼管９の管内検査が行なわれた後に
は、第７図７に示すように、再び手動作業具６９
が遮蔽部材４の上に取付けられる。手動作業具６
９を取付る際には、まず遮蔽部材４を閉じた状態
にしておき、手動作業具６９の薄膜７０から手を
入れた状態で封止用のプラグ７５を手に持つてお
く。その状態で、手動作業具６９を遮蔽部材４の
上に取付ける。手動作業具６９を遮蔽部材４の上
に取付けた後に、封止用プラグ７５を上半割部１
２に形成された開口部１６の内ねじに螺着する。
このときのプラグ７５の螺着状態は、仮締めであ
る。プラグ７５を開口部１６の内ねじに螺着した
後、遮蔽部材４および手動作業具６９を取外す。
プラグ７５は、開口部１６の内ねじにさらに本締
めされる。その後第７図８に示すように、地中埋
設鋼管９の基体２で外囲した部分はカバー部材７
６によつて覆われる。カバー部材７６は可撓性を
有し、たとえば合成樹脂製である。カバー部材７
６内には、ウレタン樹脂などのシール剤７７が充
填される。このようにして地中埋設鋼管９は、切
断された部分からの都市ガスの漏洩が防がれるよ
うにされる。 After the inside of the underground steel pipe 9 has been inspected, as shown in FIG.
is mounted on the shielding member 4. Manual work tool 6
9, first keep the shielding member 4 in a closed state, and hold the sealing plug 75 in your hand while inserting your hand through the thin film 70 of the manual tool 69. In this state, the manual work tool 69 is attached onto the shielding member 4. After installing the manual work tool 69 on the shielding member 4, the sealing plug 75 is attached to the upper half portion 1.
It is screwed into the internal thread of the opening 16 formed in 2.
The screwed state of the plug 75 at this time is temporary tightening. After the plug 75 is screwed onto the internal thread of the opening 16, the shielding member 4 and the manual work tool 69 are removed.
The plug 75 is further fully tightened to the internal thread of the opening 16. After that, as shown in FIG. 7 and 8, the portion of the underground steel pipe 9 surrounded by the base body 2 is
covered by 6. The cover member 76 has flexibility and is made of, for example, synthetic resin. Cover member 7
6 is filled with a sealant 77 such as urethane resin. In this way, the underground steel pipe 9 is prevented from leaking city gas from the cut portion.
第９図は、本考案の他の実施例の断面図であ
る。この実施例では遮蔽部材４のハウジング４１
に取付られる外筒７８は、上下に開放した円筒状
である。外筒７８の内周面には軸線方向に間隔を
開けて環状のシール部材７９が固着されている。
外筒７８内には、内筒８０が内挿される。内筒８
０は、外筒７８の軸線方向に沿つて移動可能であ
る。外筒７８の内周面にはシール部材７９が固着
されているので、外筒７８および内筒８０間から
都市ガスなどの流体が漏洩するのが防がれる。前
述の実施例では、内筒６は一体的に大略有底筒状
に形成されていたれけども、この実施例では内筒
８０は筒部８１と蓋８２とを有する。筒部８１の
上端部には半径方向内方に延びる円環部８３が形
成され、円管部８３の遊端部には、筒状の立ち上
り部８４が上方に延びて連設される。立上り部８
４には、内筒８０の半径方向外方に延びる円環部
８５が形成される。円環部８５には、ボルト挿入
孔８６が周方向に間隔を開けて複数形成される。
蓋８２には、円環部８５のボルト挿入孔８６と対
応した位置にボルト挿入孔８７が形成されてい
る。筒部８１のボルト挿入孔８６と蓋８２のボル
ト挿入孔８７とにボルト８８を挿入して、このボ
ルト８８にナツト８９を螺合することによつて、
筒部８１には蓋８２が締付け固定される。蓋８２
には、テレビカメラ８のコイル状案内管５６が挿
通することができる案内筒９０が上方に延びて形
成される。案内筒９０の内周面には環状のシール
部材９１が固着されており、このシール部材９１
によつてコイル状案内管５６と案内筒９０の間は
気密に封止される。内筒８０の筒部８１の外周面
には把手９１が形成されており、作業者はこの把
手９１を手で持つて内筒８０を外筒７８内に移動
させることができる。 FIG. 9 is a sectional view of another embodiment of the present invention. In this embodiment, the housing 41 of the shielding member 4
The outer tube 78 attached to the holder has a cylindrical shape that is open at the top and bottom. Annular seal members 79 are fixed to the inner peripheral surface of the outer cylinder 78 at intervals in the axial direction.
An inner cylinder 80 is inserted into the outer cylinder 78 . Inner cylinder 8
0 is movable along the axial direction of the outer cylinder 78. Since a sealing member 79 is fixed to the inner peripheral surface of the outer cylinder 78, fluid such as city gas is prevented from leaking between the outer cylinder 78 and the inner cylinder 80. In the embodiment described above, the inner cylinder 6 was integrally formed into a generally bottomed cylinder shape, but in this embodiment, the inner cylinder 80 has a cylindrical portion 81 and a lid 82. An annular portion 83 extending radially inward is formed at the upper end of the cylindrical portion 81, and a cylindrical rising portion 84 extends upward and is connected to the free end of the cylindrical portion 83. Rising part 8
4 is formed with an annular portion 85 extending radially outward of the inner cylinder 80. A plurality of bolt insertion holes 86 are formed in the annular portion 85 at intervals in the circumferential direction.
A bolt insertion hole 87 is formed in the lid 82 at a position corresponding to the bolt insertion hole 86 of the annular portion 85. By inserting the bolt 88 into the bolt insertion hole 86 of the cylindrical portion 81 and the bolt insertion hole 87 of the lid 82, and screwing the nut 89 onto the bolt 88,
A lid 82 is fastened and fixed to the cylindrical portion 81 . Lid 82
A guide tube 90 is formed extending upward through which the coiled guide tube 56 of the television camera 8 can be inserted. An annular seal member 91 is fixed to the inner peripheral surface of the guide tube 90.
As a result, the space between the coiled guide tube 56 and the guide tube 90 is airtightly sealed. A handle 91 is formed on the outer circumferential surface of the cylindrical portion 81 of the inner cylinder 80, and the operator can move the inner cylinder 80 into the outer cylinder 78 by holding this handle 91 with his/her hand.
この実施例では、内筒８０の下端部に連設され
る案内部材９２の案内面９３にボールベアリング
９５が形成される。案内部材９２の断面図は第１
０図に示されており、平面図は第１１図に示され
ている。案内部材９２に形成されたボールベアリ
ング９５は、、テレビカメラ８の移動方向に沿つ
て延びる複数の溝９６内に複数の球体９７が嵌り
込んで構成される。球体９７は溝９６から抜け出
しが防がれており、テレビカメラ８が案内面９３
上を移動する際に球体９７自体が回転するととも
に球体９７が順次的に案内溝９６に沿つて移動す
る。このように案内面９３にボールベアリング９
５を形成したので、案内面９３に沿つて案内され
るテレビカメラ８は、円滑に地中埋設鋼管９内に
案内されるとともに地中埋設鋼管９から円滑に取
出すことができる。案内部材９２の下方には、ス
トツパ９８が下方に延びて形成される。このスト
ツパ９８は内筒８０の固定位置を決定するための
ものであり、地中埋設鋼管９内に内筒８０を挿入
したときにストツパ９８の先端９ａは下半割部１
３の凹所２３に当接し、このことによつて内筒８
０に従つて案内部材９２の固定位置が決定され
る。 In this embodiment, a ball bearing 95 is formed on a guide surface 93 of a guide member 92 that is connected to the lower end of the inner cylinder 80 . The sectional view of the guide member 92 is the first
0, and a plan view is shown in FIG. The ball bearing 95 formed in the guide member 92 is configured by a plurality of spheres 97 fitted into a plurality of grooves 96 extending along the moving direction of the television camera 8. The sphere 97 is prevented from slipping out from the groove 96, and the television camera 8 is
When moving above, the sphere 97 itself rotates and the sphere 97 sequentially moves along the guide groove 96. In this way, the ball bearing 9 is attached to the guide surface 93.
5 is formed, the television camera 8 guided along the guide surface 93 can be smoothly guided into the underground steel pipe 9 and can be smoothly taken out from the underground steel pipe 9. A stopper 98 is formed below the guide member 92 and extends downward. This stopper 98 is for determining the fixing position of the inner cylinder 80, and when the inner cylinder 80 is inserted into the underground steel pipe 9, the tip 9a of the stopper 98 is located at the lower half portion 1.
3, and thereby the inner cylinder 8
0, the fixed position of the guide member 92 is determined.
前述の実施例では、テレビカメラ８を案内部材
７側に弾発的に付勢する弾性付勢手段としてコイ
ル５９およびリング６０が案内部材７に形成され
ていたけれども、この実施例ではテレビカメラ８
を案内部材９２側に弾発的に付勢するコイル９９
およびリング１００は、内筒８０の筒部８１の下
端部に固着された取付部材１０１に固定される。 In the embodiment described above, the coil 59 and ring 60 were formed on the guide member 7 as elastic biasing means for elastically biasing the television camera 8 toward the guide member 7, but in this embodiment, the television camera 8
a coil 99 that elastically urges the
The ring 100 is fixed to a mounting member 101 fixed to the lower end of the cylindrical portion 81 of the inner cylinder 80.
取付部材１０１付近の斜視図を第１２図に、そ
の側面図を第１３図に、その平面図を第１４図に
示す。前述の実施例ではリング６０を挿通するコ
イル５９が案内部材７に固着されていたので、テ
レビカメラ８が案内部材７に沿つて移動する際
に、その移動方向にコイル５９が変形する場合が
生じる。そのため、第１２図〜第１４図に示すよ
うな取付部材１０１を筒部８１の下端部に固定
し、この取付部材１０１にリング１００を挿通す
るコイル９９の両端部を固着する。このようにす
ることによつて、テレビカメラ８は案内部材９２
の案内面９３に沿つて移動する際にも、その移動
方向に沿つてコイル９９が変形しにくくなる。し
たがつて、さらに円滑にテレビカメラ８を地中埋
設鋼管９内に案内することが可能となる。また、
このことは地中埋設鋼管９からテレビカメラ８を
回収する場合においても同様である。 A perspective view of the vicinity of the mounting member 101 is shown in FIG. 12, a side view thereof is shown in FIG. 13, and a plan view thereof is shown in FIG. 14. In the above embodiment, the coil 59 that passes through the ring 60 is fixed to the guide member 7, so when the television camera 8 moves along the guide member 7, the coil 59 may be deformed in the direction of movement. . Therefore, a mounting member 101 as shown in FIGS. 12 to 14 is fixed to the lower end of the cylindrical portion 81, and both ends of the coil 99 through which the ring 100 is inserted are fixed to the mounting member 101. By doing this, the television camera 8 can be moved to the guide member 92.
Even when moving along the guide surface 93 of the coil 99, the coil 99 is less likely to deform along the moving direction. Therefore, it becomes possible to more smoothly guide the television camera 8 into the underground steel pipe 9. Also,
This also applies to the case where the television camera 8 is recovered from the underground steel pipe 9.
第１５図は、本考案のさらに他の実施例の断面
図である。この実施例では、内筒１０２は、合成
樹脂などの可撓性材料から成る蛇腹状の外筒１０
３によつて外囲される。外筒１０３の上端部は内
筒１０２の上端部付近に固着され、外筒１０３の
下端部は、取付筒部１０４の上端部に固着され
る。取付筒部１０４は、テレビカメラ８を地中埋
設鋼管９内に案内する際に、遮蔽部材４上に取付
けられる。取付筒１０４内には、内筒１０２が案
内される。内筒１０２の外周面にはシール部材１
０５が軸線方向に連続して形成されており、取付
筒１０４と内筒１０２との気密性が保たれる。内
筒１０２の他の構成は、第９図に示した構成と同
様である。また案内部材１１０、コイル５９ａお
よびリング６０ａの構成は第４図に示した実施例
の案内部材７およびコイル５９およびリング６０
のそれぞれの構成と同様である。このような構成
においても、本考案は好適に実施することができ
る。 FIG. 15 is a sectional view of still another embodiment of the present invention. In this embodiment, the inner cylinder 102 is a bellows-shaped outer cylinder 10 made of a flexible material such as synthetic resin.
3. The upper end of the outer cylinder 103 is fixed near the upper end of the inner cylinder 102, and the lower end of the outer cylinder 103 is fixed to the upper end of the mounting cylinder 104. The mounting cylinder part 104 is mounted on the shielding member 4 when guiding the television camera 8 into the underground steel pipe 9. An inner cylinder 102 is guided within the mounting cylinder 104 . A seal member 1 is provided on the outer peripheral surface of the inner cylinder 102.
05 is formed continuously in the axial direction, and the airtightness between the mounting cylinder 104 and the inner cylinder 102 is maintained. The other structure of the inner cylinder 102 is the same as that shown in FIG. 9. Further, the configuration of the guide member 110, coil 59a, and ring 60a is different from that of the guide member 7, coil 59, and ring 60 of the embodiment shown in FIG.
The configuration is similar to that of each of the following. Even in such a configuration, the present invention can be suitably implemented.
効 果
以上のように本考案によれば、地中埋設鋼管内
を流過する流体を遮断することなく管内が検査で
きるとともに、検査機器を管内に円滑に挿入また
は回収することが可能となる。また本考案に従え
ば、先行技術に示したように立坑を２箇所掘削し
たりする必要はなく作業性が向上される。Effects As described above, according to the present invention, the inside of an underground steel pipe can be inspected without blocking the fluid flowing inside the pipe, and inspection equipment can be smoothly inserted into or retrieved from the pipe. Further, according to the present invention, it is not necessary to excavate two vertical shafts as shown in the prior art, and work efficiency is improved.
第１図は本考案の一実施例の分解斜視図、第２
図は遮蔽部材４の平面図、第３図は遮蔽部材４の
断面図、第４図は遮蔽部材４上に外筒５を取付け
た状態を示す断面図、第５図は内筒６の断面図、
第６図は第５図の切断面線−から見た断面
図、第７図は地中埋設鋼管９の管内検査を行うた
めの一連の作業手順を示す断面図、第８図はテレ
ビカメラ８が地中埋設鋼管９内に挿入される状態
を示す拡大断面図、第９図は本考案の他の実施例
の断面図、第１０図は案内部材９２付近の断面
図、第１１図は案内部材９２付近の平面図、第１
２図は取付部材１０１付近の斜視図、第１３図は
取付部材１０１付近の側面図、第１４図は第１３
図の切断面線−から見た断面図、第１５
図は本考案のさらに他の実施例の断面図である。
１……装置、２……基体、４……遮蔽部材、
７，９２，１１０……案内部材、８……テレビカ
メラ、９……地中埋設鋼管、５９，５９ａ，９９
……コイル、６０，６２ａ，１００……リング。
Fig. 1 is an exploded perspective view of one embodiment of the present invention;
3 is a cross-sectional view of the shielding member 4, FIG. 4 is a cross-sectional view showing the outer cylinder 5 attached to the shielding member 4, and FIG. 5 is a cross-sectional view of the inner cylinder 6. figure,
FIG. 6 is a sectional view taken from the cutting plane line - in FIG. 9 is a sectional view of another embodiment of the present invention, FIG. 10 is a sectional view of the vicinity of the guide member 92, and FIG. 11 is a sectional view of the guide member 92. Plan view near member 92, first
Fig. 2 is a perspective view of the vicinity of the mounting member 101, Fig. 13 is a side view of the vicinity of the mounting member 101, and Fig. 14 is a perspective view of the vicinity of the mounting member 101.
Sectional view taken from the cutting plane line - in the figure, No. 15
The figure is a sectional view of yet another embodiment of the present invention. 1... device, 2... base, 4... shielding member,
7,92,110...Guide member, 8...TV camera, 9...Underground steel pipe, 59,59a,99
...Coil, 60, 62a, 100...Ring.
Claims (1)
する一対の半割部材とこれらの半割部材を相
互に近接方向に締付ける締付手段とを有し、
一方の半割部材に接続口が形成されている基
体と、 (b) 軸線方向の一方端が前記接続口に臨む開口
端を有し、基体に取付けられる外筒と、 (c) 基体と外筒の間に介在し、基体の接続口と
外筒の開口端とを開閉操作する遮蔽板を有す
る遮蔽手段と、 (d) 外筒内にあり、外筒の軸線方向に変位可能
に設けられ、基体の接続口に臨む側が開放し
ている内筒と、 (e) 内筒の開放端に連設される起端部を有し、
内筒の軸線に対して円滑に屈曲し、起端部か
ら遊端部に亘つて外筒の内径およびその仮想
延長線上の範囲内にある案内部材と、 (f) 前記案内部材側に弾発的に検査機器を付勢
する弾性付勢手段とを含むことを特徴とする
検査機器の管内挿入・回収装置。 (2) 前記案内部材には、前記内筒寄りに開放した
円弧状の面が形成されていることを特徴とする
実用新案登録請求の範囲第１項記載の検査機器
の管内挿入・回収装置。 (3) 前記案内部材には、検査機器が案内される面
に臨んでボールベアリングが設けられているこ
とを特徴とする実用新案登録請求の範囲第１項
記載の検査機器の管内挿入・回収装置。 (4) 前記弾性付勢手段は案内部材に形成されてい
ることを特徴とする実用新案登録請求の範囲第
１項記載の検査機器の管内挿入・回収装置。 (5) 前記弾性付勢手段は内筒に形成されているこ
とを特徴とする実用新案登録請求の範囲第１項
記載の検査機器の管内挿入・回収装置。 (6) 前記外筒には案内外筒が形成されており、そ
の案内外筒を内挿する案内内筒とはシール構造
となつていることを特徴とする実用新案登録請
求の範囲第１項記載の検査機器の管内挿入・回
収装置。[Claims for Utility Model Registration] (1) (a) A pair of half-split members abutting the outer wall of the pipe on opposite sides of the pipe, and a fastening means for fastening these half-split members in a direction toward each other. have,
a base body in which a connection port is formed in one half member; (b) an outer cylinder having an open end at one end in the axial direction facing the connection port and attached to the base body; (c) a base body and an outer cylinder. (d) a shielding means that is interposed between the cylinders and has a shielding plate that opens and closes the connection port of the base and the open end of the outer cylinder; , an inner cylinder whose side facing the connection port of the base body is open, and (e) a starting end connected to the open end of the inner cylinder,
(f) a guide member that is smoothly bent with respect to the axis of the inner cylinder and that extends from the starting end to the free end within a range of the inner diameter of the outer cylinder and its virtual extension; 1. An apparatus for inserting and retrieving a test device into a pipe, the device comprising an elastic biasing means for positively biasing the test device. (2) The apparatus for inserting and retrieving an inspection instrument into a tube as set forth in claim 1, wherein the guide member is formed with an arcuate surface that opens toward the inner tube. (3) The apparatus for inserting and retrieving a testing device into a pipe according to claim 1, wherein the guide member is provided with a ball bearing facing the surface on which the testing device is guided. . (4) The apparatus for inserting and retrieving an inspection instrument into a tube as set forth in claim 1, wherein the elastic biasing means is formed on a guide member. (5) The apparatus for inserting and retrieving an inspection instrument into a tube as set forth in claim 1, wherein the elastic biasing means is formed in an inner cylinder. (6) The outer cylinder is formed with a guide outer cylinder, and the guide inner cylinder into which the guide outer cylinder is inserted has a sealing structure, Claim 1 of the Utility Model Registration Claim Intraductal insertion/retrieval device for the described testing equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP707185U JPH0411158Y2 (en) | 1985-01-21 | 1985-01-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP707185U JPH0411158Y2 (en) | 1985-01-21 | 1985-01-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61123965U JPS61123965U (en) | 1986-08-04 |
| JPH0411158Y2 true JPH0411158Y2 (en) | 1992-03-19 |
Family
ID=30485091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP707185U Expired JPH0411158Y2 (en) | 1985-01-21 | 1985-01-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0411158Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016217977A (en) * | 2015-05-25 | 2016-12-22 | 日本電信電話株式会社 | Structure imaging system |
| JP2016217975A (en) * | 2015-05-25 | 2016-12-22 | 日本電信電話株式会社 | Structure inspection apparatus and L-shaped guide installation method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0628688Y2 (en) * | 1987-04-10 | 1994-08-03 | 日本鋼管株式会社 | Inspection pig insertion device |
-
1985
- 1985-01-21 JP JP707185U patent/JPH0411158Y2/ja not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016217977A (en) * | 2015-05-25 | 2016-12-22 | 日本電信電話株式会社 | Structure imaging system |
| JP2016217975A (en) * | 2015-05-25 | 2016-12-22 | 日本電信電話株式会社 | Structure inspection apparatus and L-shaped guide installation method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61123965U (en) | 1986-08-04 |
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