JPH0458251B2 - - Google Patents

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明は地下埋設管路に弾力栓を嵌め、地上か
らの操作により前記弾力栓を圧迫して前記管路の
内面に気密に接触する操作を可能にする地下敷設
管路用気密栓に係るものである。Detailed Description of the Invention (Industrial Application Field) The present invention relates to an operation in which an elastic plug is fitted into an underground pipeline, and the elastic plug is compressed by an operation from above ground to come into airtight contact with the inner surface of the pipeline. This relates to airtight plugs for underground pipelines that enable

（従来の技術） 電話線等を通す従来の地下敷設管路は両端を隣
り合つたマンホールに開口しているものであつ
て、該地下敷設管路の隣り合つたマンホール間の
長い内空に水洩れがないかどうかをテストするた
め、一方の管路端に気密栓を施し他方の管路端に
施した気密栓の中心部から高圧気体を送り込んで
水洩れなどの原因となるエアー洩れがないかどう
かを試験していた。然るに例えば電話線を地中敷
設管路に通す施設において、技術革新と共に該管
路の内径が小さくなり、数も減少しているので、
従来のマンホールは、ハンドホールに転換されて
人が入り得なくなつている。このため従来マンホ
ールに人が入つて操作していた気密用機材は使用
が困難か、或るいはできなくなつている。(Prior Art) Conventional underground conduits for carrying telephone lines, etc., open at both ends into adjacent manholes, and water is poured into the long inner space between the adjacent manholes of the underground conduit. To test for leaks, an airtight plug is installed at one end of the pipe, and high-pressure gas is sent from the center of the airtight plug at the other end to ensure there is no air leakage that could cause water leaks. I was testing whether or not. However, for example, in facilities where telephone lines are passed through underground conduits, the inner diameter of the conduits has become smaller and the number of such conduits has decreased with technological innovation.
Traditional manholes have been converted to handholes, making it impossible for people to enter. For this reason, it has become difficult or impossible to use the airtight equipment that had traditionally been operated by a person entering the manhole.

（本発明が解決しようとする問題点） 本発明は人がマンホールに入ることなく、ハン
ドホールを設けた地上から気密栓を施す操作がで
きるようにして、現在の新しい施設に対応できる
ようにすることを解決しようとするものである。(Problems to be Solved by the Present Invention) The present invention makes it possible to apply an airtight stopper from the ground with a handhole without having to enter the manhole, making it compatible with today's new facilities. It is an attempt to solve the problem.

（問題点を解決するための手段） 本発明は前項に述べた問題点を解決することを
目的とするものであつて、ほぼ水平にできる不動
杆と、該不動杆に摺動可能に嵌めた可動パイプと
を備え、不動杆と可動パイプの各先端間に圧迫に
より外径を拡大して地下敷設管路の内面に気密に
接触するリング形の弾力栓を嵌め、前記可動パイ
プの後端にスライダピン若しくはスライダ斜面か
らなるスライダ受圧部と設け、その受圧部から後
方に突出する不動杆にほぼ直角の套管を取付け、
該套管の内部にナツトを螺合した送りねじを設
け、套管の軸方向のスリツトに通して前記のナツ
トに固定した移動子にスライダ受圧部のスライダ
ピンに連結したリンク、若しくはスライダピン又
はスライダ斜面に対応する斜面を持つカム板から
なるスライダ素子を取付けたことを特徴とする地
下敷設管路用気密栓に係るものである。(Means for Solving the Problems) The present invention aims to solve the problems mentioned in the previous section, and includes a fixed rod that can be made substantially horizontal, and a fixed rod that is slidably fitted into the fixed rod. a movable pipe, a ring-shaped elastic plug is fitted between the immovable rod and each end of the movable pipe to expand its outer diameter by pressure and come into airtight contact with the inner surface of the underground conduit, and at the rear end of the movable pipe. A slider pressure-receiving portion consisting of a slider pin or a slider slope is provided, and a substantially right-angled mantle is attached to a fixed rod that projects rearward from the pressure-receiving portion;
A feed screw having a nut screwed therein is provided inside the mantle, and a link or a slider pin connected to the slider pin of the slider pressure receiving part is passed through an axial slit in the mantle and is fixed to the nut. This invention relates to an airtight plug for an underground conduit, characterized in that a slider element made of a cam plate having a slope corresponding to a slider slope is attached.

（作 用） 本発明はほぼ水平にできる不動杆と、該不動杆
に摺動可能に嵌めた可動パイプとを備え、不動杆
と可動パイプの各先端間に圧迫により外径を拡大
して地下敷設管路の内面に気密に接触するリング
形の弾力栓を嵌めた従来と均等な構成部分を持つ
ものであるが、前記可動パイプの後端にスライダ
ピン若しくはスライダ斜面からなるスライダ受圧
部を設け、その受圧部から後方に突出する不動杆
にほぼ直角の套管を取付け、該套管の内部にナツ
トを螺合した送りねじを設け、套管の軸方向のス
リツトに通して回転止めをした上、前記のナツト
に固定した移動子に前記スライダ受圧部のスライ
ダピンに連結したリンク若しくはスライダピン又
はスライダ斜面に対応する斜面を持つカム板から
なるスライダ素子を取付けたことにより、送りね
じを套管の上方から回転して移動子及びスライダ
素子を上下何れかの方向に移動し、可動パイプの
スライダ受圧部を不動杆及び可動パイプの軸線方
向移動に容易に転換し、それにより弾力栓を締め
付け、外径を拡大して地下敷設管路の気密栓を施
し、若しくは弾力栓の押圧を緩めて前記管路から
脱出させる操作を施すことができるものであつ
て、本発明の構成によりマンホールを持たずハン
ドホールを備えるだけの新施設に対応できる。(Function) The present invention is equipped with a stationary rod that can be made almost horizontally, and a movable pipe that is slidably fitted into the stationary rod. It has the same structure as the conventional one, in which a ring-shaped elastic plug is fitted in airtight contact with the inner surface of the laid pipe, but a slider pressure receiving part consisting of a slider pin or slider slope is provided at the rear end of the movable pipe. A nearly right-angled mantle was attached to the immovable rod that protruded rearward from the pressure-receiving part, and a feed screw with a nut screwed into the mantle was installed inside the mantle, and was passed through a slit in the axial direction of the mantle to prevent rotation. Above, a slider element consisting of a link or a slider pin connected to the slider pin of the slider pressure receiving part or a cam plate having an inclined surface corresponding to the slider inclined surface is attached to the slider fixed to the nut, so that the feed screw can be mounted. It rotates from above the pipe to move the mover and slider element either up or down, easily converting the slider pressure receiving part of the movable pipe into axial movement of the stationary rod and the movable pipe, thereby tightening the elastic plug. It is possible to expand the outside diameter to provide an airtight stopper to an underground conduit, or to loosen the pressure on the elastic stopper to allow the conduit to escape from the conduit. It can be used for new facilities that only have hand holes.

（実施例） 添付図面は本発明の実施例を示し、１は人が入
れないハンドホールであつて、地下敷設管路２の
端口を該ハンドホール１の壁に現わす。(Embodiment) The accompanying drawings show an embodiment of the present invention, in which reference numeral 1 is a hand hole into which no one can enter, and the end of an underground conduit 2 is exposed on the wall of the hand hole 1.

３はパイプからなり後端（第２図の左端）に加
圧エアーを送給するホース連結口４を設けた不動
杆で使用のときは前記管路２の軸線と平行にでき
るようにしてあり、先端に鍔５を設ける。（ホー
ス連結口は必要により閉塞する。） ７は不動杆３に摺動可能に嵌めた可動パイプで
あつて、前端に前記の鍔５の後方に対応するリン
グ板８を係合し、後端に断面コ形のブラケツト９
を固定して固定杆３の上方部で該杆を横切るスラ
イダピン１０を取付ける。 Reference numeral 3 is a fixed rod consisting of a pipe with a hose connection port 4 for supplying pressurized air at the rear end (left end in Figure 2), which can be made parallel to the axis of the pipe line 2 when in use. , a collar 5 is provided at the tip. (The hose connection port is closed if necessary.) Reference numeral 7 is a movable pipe that is slidably fitted to the immovable rod 3, and a ring plate 8 corresponding to the rear of the collar 5 is engaged at the front end, and the rear end A bracket 9 with a U-shaped cross section
is fixed, and a slider pin 10 is attached above the fixed rod 3 to cross the rod.

不動杆３には、可動パイプ７から突出する後方
部にねじ６を設けてナツト１１を螺合し、該ナツ
ト１１の螺合位置を調整して押ねじ１２により固
定を施し、そのナツト１１上に不動杆３及び可動
パイプ７の軸線に対してほぼ直角をなす套管１３
を固定し、套管１３の前側に軸方向のスリツト１
５を形成する。套管１３の内部には蓋１４から上
方に突出する六角形の操作子１７を設けた送りね
じ１６を通し、該ねじ１６に抜止めピン１８を貫
通させて設け、操作子１７に半径方向の透孔１９
を設ける。送りねじ１６には套管１３の内部でナ
ツト２０を螺合し、スリツト１５に通して回転止
めをした摺動子２１をナツト２０に取付け、若し
くはナツト２０と一体に設ける。 The immovable rod 3 is provided with a screw 6 at the rear part protruding from the movable pipe 7, and a nut 11 is screwed into the fixed rod 3. The screwing position of the nut 11 is adjusted and fixed with a set screw 12, and the screw 6 is screwed onto the nut 11. The sleeve 13 is substantially perpendicular to the axis of the fixed rod 3 and the movable pipe 7.
is fixed, and an axial slit 1 is made on the front side of the cannula 13.
form 5. A feed screw 16 with a hexagonal operator 17 protruding upward from the lid 14 is passed through the inside of the cannula 13, and a retaining pin 18 is provided to pass through the screw 16. Through hole 19
will be established. A nut 20 is screwed onto the feed screw 16 inside the sleeve 13, and a slider 21 which is passed through the slit 15 to prevent rotation is attached to the nut 20 or provided integrally with the nut 20.

２２はスライダピン１０の後方下面から斜面２
３を係合したカム板であつて、第３図により明ら
かにしたように不動杆３の両側に平行に突出さ
せ、上端部を摺動子２１に設けた軸２４より支持
し、一部をブラケツト９の内部にする。 22 is a slope 2 from the rear lower surface of the slider pin 10
As shown in Fig. 3, the cam plate is a cam plate that is engaged with the fixed rod 3, and is protruded parallel to both sides of the fixed rod 3, and its upper end is supported by a shaft 24 provided on the slider 21, and a part of the plate is Place it inside bracket 9.

不動杆３の鍔５と、可動パイプ７の先端に係合
するリング板８との間に公知のようにゴムからな
るリング形の弾力栓２５，２５を不動杆３に嵌め
て設ける。 Ring-shaped elastic plugs 25, 25 made of rubber are provided between the collar 5 of the immovable rod 3 and the ring plate 8 which engages with the tip of the movable pipe 7, by being fitted onto the immovable rod 3 as is known in the art.

前記に述べたスライダピン１０は本発明スライ
ダ受圧部２６の一例であり、カム板２２、リンク
２９は本発明のスライダ素子２７の一例である。 The slider pin 10 described above is an example of the slider pressure receiving part 26 of the present invention, and the cam plate 22 and the link 29 are examples of the slider element 27 of the present invention.

本発明は第４図に示すように可動パイプ７の後
端にスライダ斜面２８を構成し、前記と同じカム
板２２の斜面２３を前記スライダ斜面２８に係合
するか、又は第５図に示すようにスライダピン１
０に軸嵌めしたリンク２９を前記の摺動子２１の
軸２４に連結した態様にすることができるもの
で、これらは何れも本発明のスライダ受圧部２６
とスライダ素子２７の範囲である。 The present invention comprises a slider slope 28 at the rear end of the movable pipe 7 as shown in FIG. Slider pin 1
0 can be connected to the shaft 24 of the slider 21, and both of these can be connected to the shaft 24 of the slider 21 of the present invention.
and the range of the slider element 27.

前記実施例は第１図に示すように送りねじ１６
の操作子１７に回転操作杆３１を嵌めて、弾力栓
２５，２５をハンドホール１に現われた地下敷設
管路２の端部に嵌め（第２図）しかる後に回転操
作杆３１にハンドルバー３３を取付けて送りねじ
１６を回転し、回転止めを施された摺動子２１を
引き上げ、上下に移動する軸２４を基準にして可
動パイプ７を前進し、第６図のように弾力栓２
５，２５を圧迫し、外径を膨らませて地下敷設管
路２の内面に密着する。 The embodiment has a feed screw 16 as shown in FIG.
The rotary operating rod 31 is fitted to the operating element 17, and the elastic plugs 25, 25 are fitted to the end of the underground conduit 2 appearing in the hand hole 1 (Fig. 2). , rotate the feed screw 16, pull up the slider 21 which has been prevented from rotating, move the movable pipe 7 forward based on the shaft 24 that moves up and down, and move the elastic plug 2 as shown in FIG.
5 and 25 to inflate their outer diameters and come into close contact with the inner surface of the underground conduit 2.

（効 果） 本発明は人が入れないハンドホールに不動杆３
等を下ろして弾力栓２５を地下敷設管路２に差し
入れ、地上からの操作で可動パイプ７を前進さ
せ、前記弾力栓２５を圧迫して外径を拡大し、前
記管路２の端部に第６図のとおりに気密栓を施す
ことができるもので、送りねじ１６を不動杆３に
対してほぼ垂直に設け、送りねじ１６の套管１３
のスリツト１５により回転を止められた摺動子２
１を前記の送りねじ１６に螺合したナツト２０と
共に上下方向に移動し、その移動方向とほぼ直角
な方向で可動パイプ７を不動杆３上で移動して弾
力栓２５の圧迫により地下敷設管路２０に気密栓
を施し、若しくは前記圧迫を緩めて抜き取る操作
を容易に施し得る効果をもつ。(Effects) The present invention provides three immovable rods in hand holes where people cannot enter.
etc., and insert the elastic stopper 25 into the underground conduit 2, move the movable pipe 7 forward by operating from the ground, press the elastic stopper 25 to enlarge its outer diameter, and insert the elastic stopper 25 into the end of the conduit 2. As shown in Fig. 6, the feed screw 16 is installed almost perpendicularly to the immovable rod 3, and the sleeve 13 of the feed screw 16 can be provided with an airtight plug.
The slider 2 whose rotation is stopped by the slit 15 of
1 is moved vertically together with the nut 20 screwed onto the feed screw 16, and the movable pipe 7 is moved on the immovable rod 3 in a direction substantially perpendicular to the direction of movement, and the underground pipe is compressed by the elastic plug 25. This has the effect of easily providing an airtight plug to the channel 20 or releasing the pressure by loosening the pressure.

【図面の簡単な説明】[Brief explanation of the drawing]

添付図面は本発明の実施例を示し、第１図はハ
ンドホールを併せて示した側面図、第２図は要部
の縦断側面図、第３図は一部の斜視図、第４図は
他の実施例を示した一部の斜視図、第５図は更に
他の実施例を示した一部の斜視図、第６図は弾力
栓を圧迫した態様の縦断側面図である。 ３→不動杆、７→可動パイプ、１３→套管、１
４→蓋、１５→スリツト、１６→送りねじ、１７
→操作子、１８→抜止めピン、２０→ナツト、２
１→摺動子、２４→軸、２５→弾力栓、２６→ス
ライダ受圧部、２７→スライダ素子。 The attached drawings show an embodiment of the present invention, and FIG. 1 is a side view together with a hand hole, FIG. 2 is a vertical sectional side view of the main part, FIG. 3 is a partial perspective view, and FIG. FIG. 5 is a perspective view of a portion of another embodiment, FIG. 5 is a perspective view of a portion of still another embodiment, and FIG. 6 is a longitudinal sectional side view of a state in which the elastic stopper is compressed. 3 → Fixed rod, 7 → Movable pipe, 13 → Mantle, 1
4 → Lid, 15 → Slit, 16 → Feed screw, 17
→Operator, 18→Retaining pin, 20→Nut, 2
1 → slider, 24 → shaft, 25 → elastic plug, 26 → slider pressure receiving part, 27 → slider element.

Claims (1)

【特許請求の範囲】[Claims] １ ほぼ水平にできる不動杆と、該不動杆に摺動
可能に嵌めた可動パイプとを備え、不動杆と可動
パイプの各先端間に圧迫により外径を拡大して地
下敷設管路の内面に気密に接触するリング形の弾
力栓を嵌め、前記可動パイプの後端にスライダピ
ン若しくはスライダ斜面からなるスライダ受圧部
を設け、その受圧部から突出する不動杆にほぼ直
角の套管を取付け、該套管の内部にナツトを螺合
した送りねじを設け、套管の軸方向のスリツトに
通して前記ナツトに固定した移動子にスライダ受
圧部のスライダピンに連結したリンク、又はスラ
イダピン若しくはスライダ斜面に対応する斜面を
持つカム板からなるスライダ素子を取付けたこと
を特徴とする地下敷設管路用気密栓。1.Equipped with a stationary rod that can be made almost horizontally and a movable pipe that is slidably fitted into the stationary rod, the outer diameter is expanded by compression between the ends of the stationary rod and the movable pipe, and the inner surface of the underground conduit is expanded. A ring-shaped elastic stopper that makes airtight contact is fitted, a slider pressure-receiving portion consisting of a slider pin or a slider slope is provided at the rear end of the movable pipe, a substantially perpendicular mantle is attached to a stationary rod protruding from the pressure-receiving portion, and A feed screw with a nut screwed into the inside of the sleeve is provided, and the slider is passed through an axial slit in the sleeve and fixed to the nut, and the link is connected to the slider pin of the slider pressure receiving part, or the slider pin or the slider slope. An airtight plug for underground pipelines, characterized in that a slider element consisting of a cam plate with a slope corresponding to the above is attached.