JPH08149650A - Airtight plug for conduit line - Google Patents

Airtight plug for conduit line

Info

Publication number
JPH08149650A
JPH08149650A JP28062694A JP28062694A JPH08149650A JP H08149650 A JPH08149650 A JP H08149650A JP 28062694 A JP28062694 A JP 28062694A JP 28062694 A JP28062694 A JP 28062694A JP H08149650 A JPH08149650 A JP H08149650A
Authority
JP
Japan
Prior art keywords
lever
peripheral surface
conduit
sealing body
inner peripheral
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.)
Granted
Application number
JP28062694A
Other languages
Japanese (ja)
Other versions
JP2846258B2 (en
Inventor
Ichiro Ito
市郎 伊藤
Hideki Hama
秀樹 浜
Masaki Asakura
正貴 朝倉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KODAMA KAKO KK
NDS Co Ltd
Original Assignee
KODAMA KAKO KK
Nippon Denwa Shisetsu Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by KODAMA KAKO KK, Nippon Denwa Shisetsu Co Ltd filed Critical KODAMA KAKO KK
Priority to JP28062694A priority Critical patent/JP2846258B2/en
Publication of JPH08149650A publication Critical patent/JPH08149650A/en
Application granted granted Critical
Publication of JP2846258B2 publication Critical patent/JP2846258B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Electric Cable Installation (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)

Abstract

PURPOSE: To make the adhesion between a sealing body provided on the outer periphery of a cylindrical member to conduit lines having different inside diameters constant by inserting the sealing body into a conduit line and compressing the sealing body by moving an actuating rod passed through the cylindrical member along its axial line, and then, elastically deforming the sealing body so that its outer peripheral surface can tightly adhere to the inner peripheral surface of the conduit line. CONSTITUTION: After a sealing body 40 is inserted into a conduit line 60, the coupled section 22 of an actuating rod 20 is brought to the position of a lever 14 through a connecting member 30 by turning the lever 14 to an operating position around the axial line of a supporting shaft 15. When the section 22 is brought to the position of the lever 14, the rod 20 is relatively moved in a cylindrical member 10 and both plate 42 and 43 constituting a sealing body 40 are brought nearer to each other and compress rubber 44. As a result, the outer peripheral surface of the body 40 tightly adheres to the inner peripheral surface of the line 60. Since the moving stroke of the body 40 is unequivocally decided based on the rotation of the lever 14, the adhesion of the body 40 to the inner peripheral surfaces of conduit lines having different inside diameters can become almost constant.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、地下ケーブルを通す管
路の接続性能試験として管路内に封入された圧縮空気の
漏洩の有無を検査する際に、この管路の両端部を塞ぐた
めに用いる管路用気密栓に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is intended to block both ends of a pipeline through which an underground cable is to be connected when testing for leakage of compressed air sealed in the pipeline as a connection performance test. The present invention relates to an airtight stopper for a pipeline used.

【0002】[0002]

【従来の技術】この種の気密栓は所定の長さの筒部材
と、その中に挿通させた作動ロッドと、前記筒部材の外
周部に設けられたシール体とを主体とした構造となって
いる。このシール体は、ゴムなどの弾性素材によって所
定の厚みを有するリング状に形成されており、前記作動
ロッドを筒部材に対して軸線に沿って移動させることで
圧縮されて弾性変形する。そこでこの気密栓の使用にあ
たっては、前記シール体を地下ケーブル用の管路内に挿
入し、前記作動ロッド外周のナットをスパナなどの工具
によって回転操作し、この作動ロッドを軸線に沿って移
動させる。これによって前記シール体がその外周面を前
記管路の内周面に密着させた状態に弾性変形し、管路内
を気密に保つことができる。
2. Description of the Related Art An airtight plug of this type has a structure mainly composed of a tubular member having a predetermined length, an operating rod inserted through the tubular member, and a seal body provided on the outer peripheral portion of the tubular member. ing. The seal body is formed of an elastic material such as rubber into a ring shape having a predetermined thickness, and is compressed and elastically deformed by moving the operating rod along the axis with respect to the tubular member. Therefore, in using this airtight plug, the seal body is inserted into the conduit for underground cable, and the nut on the outer circumference of the operating rod is rotated by a tool such as a spanner to move the operating rod along the axis. . As a result, the seal body is elastically deformed in a state where the outer peripheral surface of the seal body is in close contact with the inner peripheral surface of the conduit, and the inside of the conduit can be kept airtight.

【0003】[0003]

【発明が解決しようとする課題】前記管路内の気密を保
つために前記気密栓を取付け、あるいはこの管路から気
密栓を取外すためには前記ナットを回転操作しなければ
ならず、その作業に多くの時間を要するとともに、スパ
ナなどの工具も必要である。また作業者の経験の程度な
どにより、前記ナットの締付け力、つまり前記管路の内
周面に対するシール体の密着力にばらつきが生じる。
In order to install the airtight plug in order to maintain the airtightness in the pipe line or to remove the airtight plug from the pipe line, the nut must be rotated and operated. It takes a lot of time and requires a tool such as a spanner. Further, the tightening force of the nut, that is, the adhesive force of the seal body to the inner peripheral surface of the conduit varies depending on the degree of experience of the operator.

【0004】本発明が解決しようとする一つの課題は、
管路に対する気密栓の脱着作業をスパナなどの工具に頼
ることなく、レバーによる簡易操作(ワンタッチ操作)
としてその作業時間を短縮するとともに、管路の内周面
に対するシール体の密着力を作業者の経験の程度などに
かかわらず一定とすることである。本発明が解決しよう
とする他の一つの課題は、ワンタッチ操作にもかかわら
ず内径の異なる管路に対してもそれぞれの内周面に対す
るシール体の密着力をほぼ一定に保ち、かつ管路に対し
て気密栓を正規の取付け状態に保持可能とすることであ
る。
One problem to be solved by the present invention is
Simple operation by lever (one-touch operation) without using a tool such as a wrench for attaching and detaching the airtight plug to the pipeline.
As a result, the working time is shortened and the adhesion of the seal body to the inner peripheral surface of the conduit is made constant regardless of the degree of experience of the operator. Another problem to be solved by the present invention is to keep the adhesive force of the seal body to each inner peripheral surface substantially constant even for pipes having different inner diameters despite one-touch operation, and On the other hand, the airtight stopper can be held in a properly attached state.

【0005】[0005]

【課題を解決するための手段】前記課題を解決するため
に、本発明の管路用気密栓はつぎのように構成されてい
る。請求項1記載の発明は、筒部材の外周部に設けられ
たシール体を所定の管路内に挿入した状態で、この筒部
材の中に挿通させている作動ロッドをその軸線に沿って
移動させることにより、前記シール体を圧縮してその外
周面が前記管路の内周面に密着するように弾性変形させ
る構成の管路用気密栓であって、前記筒部材の外周に回
動操作可能に取付けられたレバーと前記作動ロッドに固
定された結合部とが、このレバーの回動操作によって前
記作動ロッドをその軸線に沿って移動させるように連結
部材によって連結されている。請求項2記載の発明は、
請求項1記載の管路用気密栓において、前記連結部材が
レバーの側と作動ロッドの結合部の側とに分割され、そ
れらが弾性体を介して互いの軸線に沿った方向へ相対的
にスライド可能に結合され、この弾性体はシール体をそ
の外周面が管路の内周面に密着するまで弾性変形させる
ときの力より大きい力を受けたときに弾性変形するよう
に設定されている。
In order to solve the above-mentioned problems, the airtight plug for a pipeline of the present invention is constructed as follows. In the invention according to claim 1, in a state where the seal body provided on the outer peripheral portion of the tubular member is inserted into a predetermined pipeline, the actuating rod inserted through the tubular member is moved along the axis thereof. An airtight plug for a pipe line configured to compress the seal member and elastically deform the outer peripheral surface of the seal member so as to be in close contact with the inner peripheral surface of the pipe line, and the rotary operation is performed on the outer periphery of the tubular member. A lever that is movably mounted and a coupling portion that is fixed to the operating rod are connected by a connecting member so that the operating rod is moved along the axis thereof by the turning operation of the lever. The invention according to claim 2 is
The airtight plug for pipelines according to claim 1, wherein the connecting member is divided into a lever side and a connecting portion side of the actuating rod, and these are relatively arranged in a direction along an axis of each other via an elastic body. Slidingly coupled, this elastic body is set so as to be elastically deformed when a force larger than that for elastically deforming the outer peripheral surface of the sealing body to the inner peripheral surface of the conduit is received. .

【0006】[0006]

【作用】請求項1記載の発明によれば、前記シール体を
管路の中に挿入した状態で前記レバーを回動操作するこ
とにより、前記作動ロッドがその軸線に沿って前記筒部
材に対して移動する。これに伴って前記シール体が圧縮
され、その外周面が前記管路の内周面に密着する。そし
て前記レバーを元の状態に回動させると、前記シール体
がその弾性によって元の形状に戻り、気密栓を管路から
取外すことができる。このように管路に対する気密栓の
脱着作業は前記レバーの操作のみによって行うことがで
きる。また前記シール体の圧縮による弾性変形量は前記
レバーの回動操作に基づいてほぼ一定となるため、前記
管路の内径が同じであれば管路の内周面に対するシール
体の密着力は作業者の経験の程度などにかかわらず一定
となる。請求項2記載の発明においては、例えば前記管
路の内径が予定されていた寸法よりも小さいとき、つま
りシール体を管路の内周面に所定の力で密着するまで弾
性変形させた状態で前記レバーには未だ操作代が残って
いるときに、このレバーを所定の操作位置まで操作しよ
うとすると、前記のように分割されている連結部材に作
用する負荷が高まる。この結果、連結部材が前記弾性体
を変形させつつスライドしてレバーの操作を吸収するこ
ととなり、前記シール体をそれ以上変形させることな
く、しかもレバーは所定の操作位置へ回動させることが
できる。したがって前記レバーを回動させるだけの簡易
操作にもかかわらず、鋼管とビニール管とのように互い
に内径の異なる管路に対しても前記シール体の密着力が
ほぼ一定となり、かつレバーは無理なく所定の位置にま
で操作できて気密栓は管路に対して正規の取付け状態に
保持される。
According to the first aspect of the present invention, by rotating the lever while the seal body is inserted into the conduit, the actuating rod is moved relative to the tubular member along its axis. To move. Along with this, the seal body is compressed, and the outer peripheral surface thereof comes into close contact with the inner peripheral surface of the conduit. Then, when the lever is rotated to the original state, the sealing body returns to its original shape due to its elasticity, and the airtight plug can be removed from the pipe line. In this way, the work of attaching and detaching the airtight plug to the conduit can be performed only by operating the lever. Further, since the amount of elastic deformation of the seal body due to the compression becomes substantially constant based on the turning operation of the lever, if the inner diameter of the pipe line is the same, the adhesion force of the seal body to the inner peripheral surface of the pipe line does not work. It is constant regardless of the degree of experience of the person. In the invention according to claim 2, for example, when the inner diameter of the conduit is smaller than a predetermined size, that is, the seal body is elastically deformed until it comes into close contact with the inner peripheral surface of the conduit with a predetermined force. If an attempt is made to operate the lever to a predetermined operation position when the lever still has an operating allowance, the load acting on the divided connecting members increases. As a result, the connecting member slides while deforming the elastic body to absorb the operation of the lever, and the lever can be rotated to a predetermined operating position without further deforming the seal body. . Therefore, despite the simple operation of rotating the lever, the adhesion force of the seal body is almost constant even for pipes having different inner diameters such as a steel pipe and a vinyl pipe, and the lever is reasonably comfortable. It can be operated to a predetermined position, and the airtight stopper is held in a properly attached state with respect to the conduit.

【0007】[0007]

【実施例】つぎに本発明の実施例を図面にしたがって説
明する。図1は管路用気密栓の断面図、図2は同じく管
路用気密栓の平面図である。これらの図面で示すように
円筒形状の筒部材10の中空部内には、同じく円筒形状
の作動ロッド20が相互の軸線に沿って相対的に移動で
きるように挿入されている。なお作動ロッド20はその
軸長が筒部材10よりも長く、その両端部が筒部材10
から突出している。前記筒部材10の一方の端部寄りの
外周にはステー12が固定されていて、このステー12
に対してレバー14が支持軸15によって回動操作可能
に取付けられている。また筒部材10のほぼ中間部に
は、前記ステー12と対応する位置において内部に通じ
る開口18が形成されている。
Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is a cross-sectional view of the airtight stopper for pipelines, and FIG. 2 is a plan view of the airtight stopper for pipelines. As shown in these drawings, a cylindrical actuating rod 20 is inserted in the hollow portion of the cylindrical tubular member 10 so as to be relatively movable along the mutual axes. The operating rod 20 has an axial length longer than that of the tubular member 10, and both end portions thereof have the tubular member 10.
Projecting from. A stay 12 is fixed to the outer periphery of the tubular member 10 near one end.
On the other hand, the lever 14 is rotatably mounted by a support shaft 15. Further, an opening 18 communicating with the inside is formed at a position corresponding to the stay 12 in a substantially middle portion of the tubular member 10.

【0008】前記作動ロッド20には、筒部材10の前
記開口18を通じて外部に突出させた結合部22が固定
されている。この結合部22と前記レバー14とは連結
部材30によって相互に連結されている。この連結部材
30は、レバー14に対して軸16で回動自在に結合さ
れたリンク部材31と、前記結合部22に対して先端の
リング部32aを係合させたロッド部材32とを備えて
いる。そしてこのロッド部材32は、リンク部材31の
端部に対して互いの軸線に沿って相対的にスライドでき
るように挿通させている。
A coupling portion 22 is fixed to the operating rod 20 so as to project to the outside through the opening 18 of the tubular member 10. The connecting portion 22 and the lever 14 are connected to each other by a connecting member 30. The connecting member 30 includes a link member 31 rotatably connected to the lever 14 by a shaft 16, and a rod member 32 in which a ring portion 32a at the tip end is engaged with the connecting portion 22. There is. The rod member 32 is inserted so as to be slidable relative to the end of the link member 31 along the mutual axes.

【0009】前記ロッド部材32の端部には、このロッ
ド部材32にねじ込まれた調整ナット36で位置決めさ
れたスライド板34が設けられ、このスライド板34と
前記リンク部材31との間には、弾性体として用いたコ
イルスプリング38が組付けられている。すなわちリン
ク部材31とロッド部材32とは、前記スプリング38
を介して相対的にスライド可能に結合されている。なお
前記スライド板34は前記調整ナット36のねじ込み量
により、前記ロッド部材32に対する軸線方向の位置が
調整されるようになっている。このスライド板34の位
置調整によってリンク部材31とロッド部材32との軸
線方向の相対的な位置、つまり連結部材30の長さを調
整できると同時に、前記スプリング38の保有弾力を調
整できる。
At the end of the rod member 32, a slide plate 34 positioned by an adjusting nut 36 screwed into the rod member 32 is provided, and between the slide plate 34 and the link member 31, A coil spring 38 used as an elastic body is assembled. That is, the link member 31 and the rod member 32 are the same as the spring 38.
Is relatively slidably coupled via. The position of the slide plate 34 in the axial direction with respect to the rod member 32 is adjusted by the screwing amount of the adjusting nut 36. By adjusting the position of the slide plate 34, the relative position of the link member 31 and the rod member 32 in the axial direction, that is, the length of the connecting member 30 can be adjusted, and at the same time, the resilience of the spring 38 can be adjusted.

【0010】前記筒部材10及び作動ロッド20におい
て、前記レバー14とは反対側の端部にはシール体40
が設けられている。このシール体40は、作動ロッド2
0の軸上において筒部材10の端面で受止められるよう
に配置された円板状のプレート42と、同じく作動ロッ
ド20の端部に固定された円板状のプレート43との間
に、肉厚の大きい筒形状のラバー44を介在させた構成
となっている。そしてこのラバー44は図1で示すよう
に軸線方向に関して円板状の中間プレート46を介在さ
せた二層構造となっている。そこで前記の両プレート4
2,43を接近させる方向へ前記筒部材10に対して作
動ロッド20を相対的に移動させることにより、これら
の両プレート42,43の間で前記ラバー44が圧縮さ
れ、その外周が膨れる恰好で弾性変形することとなる。
なお自由状態でのシール体40の外径は、地下ケーブル
を通すための管路60内へ図1,2で示すように緩く挿
入できる寸法となっている。
A seal member 40 is provided at the end of the tubular member 10 and the operating rod 20 opposite to the lever 14.
Is provided. This seal body 40 is used for the operating rod 2
Between the disk-shaped plate 42 arranged so as to be received by the end surface of the tubular member 10 on the axis of 0 and the disk-shaped plate 43 also fixed to the end of the operating rod 20, It has a configuration in which a cylindrical rubber 44 having a large thickness is interposed. The rubber 44 has a two-layer structure in which a disc-shaped intermediate plate 46 is interposed in the axial direction as shown in FIG. So both plates 4 above
By moving the actuating rod 20 relative to the tubular member 10 in the direction in which the plates 2 and 43 approach each other, the rubber 44 is compressed between the plates 42 and 43, and the outer circumference thereof expands. It will be elastically deformed.
The outer diameter of the seal body 40 in the free state is such that it can be loosely inserted into a pipeline 60 for passing an underground cable, as shown in FIGS.

【0011】前記のように構成された気密栓で管路60
の端部を塞ぐには、まず前記シール体40を図1,2で
示すように管路60の中に挿入する。この状態で前記レ
バー14を前記支持軸15の軸線回りに図3で示す操作
位置まで回動させることにより、前記連結部材30を通
じて前記作動ロッド20の結合部22がレバー14の側
に引き寄せられる。これに伴って作動ロッド20が筒部
材10の中で相対的に移動し、前記シール体40を構成
している両プレート42,43が接近して前記ラバー4
4が圧縮され、シール体40の外周面(ラバー44の外
周面)が管路60の内周面に密着する。なお前記シール
体40の圧縮量(弾性変形量)は、前記筒部材10に対
する作動ロッド20の移動ストロークに基づくものであ
る。そしてこの移動ストロークは前記レバー14の回動
操作に基づいて一義的に決まっているので、前記管路6
0の内周面に対するシール体40の密着力は作業者の経
験の程度などにかかわらず常に一定となる。
The conduit 60 is formed by the airtight stopper having the above structure.
In order to close the end of the above, first, the sealing body 40 is inserted into the conduit 60 as shown in FIGS. In this state, by rotating the lever 14 around the axis of the support shaft 15 to the operation position shown in FIG. 3, the connecting portion 22 of the operating rod 20 is pulled toward the lever 14 through the connecting member 30. Along with this, the operating rod 20 relatively moves in the tubular member 10, and the plates 42 and 43 forming the seal body 40 approach each other to move the rubber 4
4 is compressed, and the outer peripheral surface of the seal body 40 (the outer peripheral surface of the rubber 44) comes into close contact with the inner peripheral surface of the conduit 60. The compression amount (elastic deformation amount) of the seal body 40 is based on the movement stroke of the operation rod 20 with respect to the tubular member 10. Since this moving stroke is uniquely determined based on the turning operation of the lever 14, the pipe 6
The adhesion of the seal body 40 to the inner peripheral surface of 0 is always constant regardless of the degree of experience of the operator.

【0012】前記レバー14を図1で示す位置から図3
で示す操作位置まで回動させたときに、このレバー14
と前記連結部材30とを結合している前記軸16の中心
が、このレバー14の前記支持軸15と前記結合部22
に対する連結部材30(前記リング部32a)の係合箇
所とを結ぶ直線上の点(以下、「ターンオーバ点」と略
称する)を越える。この結果、レバー14と作動ロッド
20の結合部22との間には前記シール体40が元に戻
ろうとする力が前記連結部材30を通じて作用している
にもかかわらず、レバー14は図3の操作位置に保持さ
れ、気密栓は管路60に取付けられた状態に保たれる。
また管路60から気密栓を取外す場合には、前記レバー
14を図3の操作位置から前記軸16が前記のターンオ
ーバ点を過ぎるまで回動させてやれば、その後のレバー
14はシール体40の復帰弾力によって図1で示す元の
状態に回動し、シール体40も元の状態となる。したが
って管路60から気密栓を取外すことができる。
From the position shown in FIG. 1 to the lever 14 shown in FIG.
When the lever 14 is rotated to the operation position shown by
The center of the shaft 16 connecting the connecting member 30 and the connecting member 30 is the support shaft 15 of the lever 14 and the connecting portion 22.
To a point on a straight line connecting the engaging portion of the connecting member 30 (the ring portion 32a) with respect to (hereinafter, abbreviated as "turnover point"). As a result, although the force for returning the seal body 40 to the original state is exerted between the lever 14 and the connecting portion 22 of the operating rod 20 through the connecting member 30, the lever 14 does not move as shown in FIG. Held in the operating position, the airtight closure remains attached to line 60.
When removing the airtight plug from the conduit 60, if the lever 14 is rotated from the operating position in FIG. 3 until the shaft 16 passes the turnover point, the lever 14 thereafter is sealed. The return elastic force causes the seal body 40 to return to its original state as shown in FIG. Therefore, the airtight plug can be removed from the conduit 60.

【0013】前記管路60にはその内径が、例えば鋼管
(φ81mm)とビニール管(φ83mm)とのように互い
に異なるものがある。このような現状において内径の大
きい管路60(ビニール管)に対応させた気密栓を内径
の小さい管路60(鋼管)に使用した場合には、前記レ
バー14を図3で示す位置、つまり前記軸16が前記タ
ーンオーバ点を越える位置まで操作する前に前記シール
体40が管路60の内周面に所定の力で密着した状態に
なる。
The pipe 60 may have different inner diameters, such as a steel pipe (φ81 mm) and a vinyl pipe (φ83 mm). Under the present circumstances, when an airtight plug corresponding to the pipe line 60 (vinyl pipe) having a large inner diameter is used for the pipe line 60 (steel pipe) having a small inner diameter, the lever 14 is at the position shown in FIG. Before the shaft 16 is operated to a position beyond the turnover point, the seal body 40 is brought into close contact with the inner peripheral surface of the conduit 60 with a predetermined force.

【0014】そこで前記レバー14を図3で示す正規の
操作位置まで操作しようとすると、このレバー14と作
動ロッド20の結合部22とを連結している前記連結部
材30に作用する負荷が高まる。したがってこの連結部
材30を構成している前記リンク部材31とロッド部材
32とが前記スプリング38を圧縮しつつ相対的にスラ
イドし、このときのレバー14の操作量を吸収する。こ
の結果、前記シール体40を必要以上に弾性変形させる
ことなく、しかもレバー14は図3で示す所定の操作位
置へ回動させることができる。このように内径の異なる
管路60に対しても前記シール体40の密着力はほぼ一
定となり、かつレバー14は正規の操作位置にまで回動
させることができ、よって気密栓は管路60に対して所
定の取付け状態に保持される。
When the lever 14 is operated to the normal operating position shown in FIG. 3, the load acting on the connecting member 30 connecting the lever 14 and the connecting portion 22 of the operating rod 20 increases. Therefore, the link member 31 and the rod member 32 forming the connecting member 30 relatively slide while compressing the spring 38, and absorb the operation amount of the lever 14 at this time. As a result, the lever 14 can be rotated to a predetermined operation position shown in FIG. 3 without elastically deforming the seal body 40 more than necessary. Thus, the sealing force of the sealing body 40 is substantially constant even with respect to the pipes 60 having different inner diameters, and the lever 14 can be rotated to the normal operating position. On the other hand, it is held in a predetermined attached state.

【0015】つぎに前記気密栓を用いて管路60の接続
性能試験などを行う場合につき、図4によって簡単に説
明する。まず図4のタイプAで示す気密栓については前
述したように円筒形状(中空状)に形成された前記作動
ロッド20の端部に対し、図1〜3からも明らかなよう
にエアホース50が接続具51によって連結されてい
る。つまりこのタイプAの気密栓は一方のマンホール6
1側において管路60の端部を塞ぐとともに、前記エア
ホース50を通じて供給される圧縮空気を管路60の内
部へ送り込むことが可能である。これに対してタイプB
で示す気密栓は他方のマンホール62において管路60
の端部を塞いでいる。そこでタイプAの気密栓から管路
60の中に圧縮空気を封入し、その漏洩の有無を検査す
ることで管路60の接続性能をみることができる。
Next, a case of conducting a connection performance test of the conduit 60 using the airtight plug will be briefly described with reference to FIG. First, regarding the airtight plug shown as type A in FIG. 4, the air hose 50 is connected to the end portion of the operating rod 20 formed in a cylindrical shape (hollow shape) as described above, as is clear from FIGS. They are connected by a tool 51. In other words, this type A airtight plug has one manhole 6
It is possible to block the end of the pipe line 60 on the first side and send the compressed air supplied through the air hose 50 into the pipe line 60. On the other hand, type B
The airtight plug shown by means of the pipe line 60 in the other manhole 62.
Is blocking the end of. Therefore, the connection performance of the pipeline 60 can be seen by enclosing compressed air in the pipeline 60 from a type A airtight plug and inspecting for leakage.

【0016】図4のタイプCで示す気密栓については、
前記作動ロッド20の端部にエアホース50が接続され
ているとともに、この作動ロッド20にはワイヤ52が
挿通されている。このワイヤ52の先端には管路60の
中に位置させたラコーダー53が結合されている。この
タイプCの気密栓によって一方のマンホール61側から
管路60の端部を塞ぎ、この管路60の中に圧縮空気を
送り込むことで前記ラコーダー53を他方のマンホール
62に向けて移動させることができる。この結果、管路
60には前記ワイヤ52が一方のマンホール61から他
方のマンホール62まで通されることとなり、このワイ
ヤ52を利用して管路60に所定のケーブルを通すこと
ができる。
Regarding the airtight stopper shown as type C in FIG. 4,
An air hose 50 is connected to the end of the operating rod 20, and a wire 52 is inserted through the operating rod 20. A Lacoder 53 located in the conduit 60 is coupled to the tip of the wire 52. This type C airtight plug closes the end of the conduit 60 from the one manhole 61 side, and the compressed air is sent into the conduit 60 to move the Lacoder 53 toward the other manhole 62. it can. As a result, the wire 52 is passed through the conduit 60 from one manhole 61 to the other manhole 62, and a predetermined cable can be passed through the conduit 60 using the wire 52.

【0017】このように図4のタイプAあるいはタイプ
Cの気密栓では、その作動ロッド20が管路60に圧縮
空気やワイヤ52を送り込めるように中空となってい
る。これに対してタイプBの気密栓については、作動ロ
ッド20が中実もしくは少なくともその一端部が閉塞さ
れた構造となっている。
As described above, in the airtight plug of type A or type C shown in FIG. 4, the operating rod 20 is hollow so that compressed air or the wire 52 can be sent to the conduit 60. On the other hand, the type B airtight plug has a structure in which the operating rod 20 is solid or at least one end thereof is closed.

【0018】[0018]

【発明の効果】本発明は、管路に対して気密栓を脱着す
るための作業時間が短縮されるとともに、管路の内周面
に対するシール体の密着力が作業者の経験の程度などに
かかわらず一定となる。また本発明によれば、管路に対
する気密栓の脱着がレバーによる簡易操作であるにもか
かわらず、内径の異なる管路に対してもそれぞれの内周
面に対するシール体の密着力がほぼ一定となり、かつ気
密栓は管路に対して正規の取付け状態に保持できる。
According to the present invention, the working time for removing the airtight plug from the pipe can be shortened, and the adhesion of the seal body to the inner peripheral surface of the pipe can be adjusted to the degree of experience of the operator. It is constant regardless of. Further, according to the present invention, even if the attachment / detachment of the airtight plug to / from the conduit is a simple operation by the lever, the adhesion of the seal body to the inner peripheral surfaces of the conduits having different inner diameters becomes substantially constant. Moreover, the airtight plug can be held in a properly attached state with respect to the pipeline.

【図面の簡単な説明】[Brief description of drawings]

【図1】管路用気密栓の断面図である。FIG. 1 is a sectional view of an airtight plug for a pipeline.

【図2】同じく管路用気密栓の平面図である。FIG. 2 is a plan view of an airtight stopper for pipelines.

【図3】管路を塞いだ状態の気密栓を表した断面図であ
る。
FIG. 3 is a cross-sectional view showing an airtight plug with a duct closed.

【図4】気密栓の各種の設置状態を表した説明図であ
る。
FIG. 4 is an explanatory view showing various installation states of the airtight stopper.

【符号の説明】[Explanation of symbols]

10 筒部材 14 レバー 20 作動ロッド 22 結合部 30 連結部材 38 スプリング 40 シール体 60 管路 DESCRIPTION OF SYMBOLS 10 Cylindrical member 14 Lever 20 Actuating rod 22 Coupling part 30 Connecting member 38 Spring 40 Seal body 60 Pipe line

───────────────────────────────────────────────────── フロントページの続き (72)発明者 朝倉 正貴 愛知県名古屋市中区千代田二丁目15番18号 日本電話施設株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masataka Asakura 15-18 Chiyoda, Naka-ku, Nagoya, Aichi Japan Telephone Facility Co., Ltd.

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 筒部材の外周部に設けられたシール体を
所定の管路内に挿入した状態で、この筒部材の中に挿通
させている作動ロッドをその軸線に沿って移動させるこ
とにより、前記シール体を圧縮してその外周面が前記管
路の内周面に密着するように弾性変形させる構成の管路
用気密栓であって、 前記筒部材の外周に回動操作可能に取付けられたレバー
と前記作動ロッドに固定された結合部とが、このレバー
の回動操作によって前記作動ロッドをその軸線に沿って
移動させるように連結部材によって連結されていること
を特徴とした管路用気密栓。
1. An operating rod, which is inserted into the tubular member, is moved along the axis of the tubular member with the seal member provided on the outer peripheral portion of the tubular member being inserted into a predetermined pipe line. A pipe line airtight plug configured to compress the seal body and elastically deform so that an outer peripheral surface of the seal body is in close contact with an inner peripheral surface of the pipe line, the rotary body being rotatably attached to an outer periphery of the tubular member. And a connecting portion fixed to the actuating rod are connected by a connecting member so as to move the actuating rod along the axis of the actuating lever by rotating the lever. Airtight stopper for.
【請求項2】 請求項1記載の管路用気密栓において、
前記連結部材がレバーの側と作動ロッドの結合部の側と
に分割され、それらが弾性体を介して互いの軸線に沿っ
た方向へ相対的にスライド可能に結合され、この弾性体
はシール体をその外周面が管路の内周面に密着するまで
弾性変形させるときの力より大きい力を受けたときに弾
性変形するように設定されていることを特徴とした管路
用気密栓。
2. The airtight stopper for a pipe line according to claim 1,
The connecting member is divided into a lever side and a connecting portion side of the actuating rod, and these are connected through an elastic body so as to be relatively slidable in the directions along the mutual axis, and the elastic body is a sealing body. An airtight plug for a conduit, wherein the outer peripheral surface is set to be elastically deformed when a force larger than a force for elastically deforming the outer peripheral surface is brought into close contact with the inner peripheral surface of the conduit.
JP28062694A 1994-11-15 1994-11-15 Airtight plug for pipeline Expired - Fee Related JP2846258B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP28062694A JP2846258B2 (en) 1994-11-15 1994-11-15 Airtight plug for pipeline

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP28062694A JP2846258B2 (en) 1994-11-15 1994-11-15 Airtight plug for pipeline

Publications (2)

Publication Number Publication Date
JPH08149650A true JPH08149650A (en) 1996-06-07
JP2846258B2 JP2846258B2 (en) 1999-01-13

Family

ID=17627680

Family Applications (1)

Application Number Title Priority Date Filing Date
JP28062694A Expired - Fee Related JP2846258B2 (en) 1994-11-15 1994-11-15 Airtight plug for pipeline

Country Status (1)

Country Link
JP (1) JP2846258B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20220144089A (en) * 2021-04-19 2022-10-26 한국수력원자력 주식회사 A pipe inner space block device for preventing foreign object inflow

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102401930B1 (en) * 2021-04-14 2022-05-26 한전케이피에스 주식회사 Holding apparatus for pernetaration nozzzle of reactor pressure vessel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20220144089A (en) * 2021-04-19 2022-10-26 한국수력원자력 주식회사 A pipe inner space block device for preventing foreign object inflow

Also Published As

Publication number Publication date
JP2846258B2 (en) 1999-01-13

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