JP2002321109A - Chip-discharging structure of apparatus for drilling already installed pipe - Google Patents
Chip-discharging structure of apparatus for drilling already installed pipeInfo
- Publication number
- JP2002321109A JP2002321109A JP2001127941A JP2001127941A JP2002321109A JP 2002321109 A JP2002321109 A JP 2002321109A JP 2001127941 A JP2001127941 A JP 2001127941A JP 2001127941 A JP2001127941 A JP 2001127941A JP 2002321109 A JP2002321109 A JP 2002321109A
- Authority
- JP
- Japan
- Prior art keywords
- flow path
- discharge
- valve
- closing member
- existing 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.)
- Granted
Links
Landscapes
- Drilling And Boring (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、水道管等の既設管
の特定箇所に、管内流体の流れを維持したまま分岐管を
接続するための分岐口を形成したり、或いは、既設管の
特定箇所に、管内流体の流れを維持したまま弁挿入口を
形成する既設管穿孔設備で、特に、ハウジング内に位置
する既設管の管壁に対する穿孔装置による穿孔作業に連
れて発生した切屑を流体と共に外部に排出するように構
成してある既設管穿孔設備の切屑排出構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming a branch port for connecting a branch pipe at a specific location of an existing pipe such as a water pipe while maintaining the flow of fluid in the pipe, or for specifying an existing pipe. In existing pipe piercing equipment that forms a valve insertion port while maintaining the flow of fluid in the pipe, the chips generated along with the piercing operation by the piercing device on the pipe wall of the existing pipe located in the housing together with the fluid The present invention relates to a chip discharging structure of an existing pipe drilling facility configured to discharge to the outside.
【０００２】[0002]
【従来の技術】従来の既設管穿孔設備の切屑排出構造で
は、既設管の一部を密封するハウジングに、このハウジ
ング内に位置する既設管の管壁に対する穿孔装置による
穿孔作業に連れて発生した切屑を流体と共に外部に排出
する筒状の排出口部を、外部に突出する状態で一体形成
し、この排出口部の内周面に、開閉弁の一端側に形成さ
れた雄ネジ部を螺合装着可能な雌ネジ部を形成するとと
もに、前記開閉弁の他端側に形成された雄ネジ部には、
切屑が混在した流体を特定箇所に排出案内する排出ホー
スを脱着自在に装着していた。また、穿孔作業が終了す
ると、開閉弁を閉じ操作し、排出ホースが取外された開
閉弁の他端側の雄ネジ部に、密閉用のキャップを螺合装
着していた。2. Description of the Related Art In a conventional chip discharging structure of an existing pipe drilling facility, a chip generated in a housing that seals a part of the existing pipe is drilled by a drilling device for a pipe wall of the existing pipe located in the housing. A cylindrical discharge port for discharging the chips to the outside together with the fluid is integrally formed so as to protrude to the outside, and a male screw formed on one end side of the on-off valve is screwed on the inner peripheral surface of the discharge port. While forming a female screw portion that can be fitted together, a male screw portion formed on the other end side of the on-off valve,
A discharge hose that discharges and guides fluid mixed with chips to a specific location is detachably mounted. When the drilling operation is completed, the on-off valve is closed, and a sealing cap is screwed into the male screw on the other end of the on-off valve from which the discharge hose has been removed.
【０００３】[0003]
【発明が解決しようとする課題】従来の既設管穿孔設備
の切屑排出構造では、穿孔作業の終了時に、ハウジング
の排出口部に装着されている開閉弁を残したまま、その
開閉弁の雄ネジ部に密閉用のキャップを螺合装着するた
め、設備コストが高騰化するばかりでなく、開閉弁が他
物との接当等によって開き操作される可能性があり、そ
の場合、キャップのみで密封（止水）することになるた
め、長期間でのシール性能の信頼性が低下する問題があ
る。In the conventional chip discharge structure of the existing pipe drilling equipment, at the end of the drilling operation, the male screw of the open / close valve is left with the open / close valve attached to the discharge port of the housing. Since the sealing cap is screwed onto the part, not only the equipment cost rises, but also the opening / closing valve may be opened by contact with other objects, etc. (Water stoppage), there is a problem that reliability of sealing performance over a long period of time is reduced.
【０００４】本発明は、上述の実状に鑑みて為されたも
のであって、第１の主たる課題は、排出口部から排出さ
れる流体を開閉弁で簡単に制御しながらも、穿孔作業終
了時には、不断流状態のまま開閉弁を簡便に取外すこと
ができ、しかも、長期間に亘って確実に密封処理するこ
とのできる既設管穿孔設備の切屑排出構造を提供する点
にあり、第２の主たる課題は、排出口部から排出される
流体を簡単に制御することができると共に、穿孔作業終
了後の密封処理も能率良く容易に行なうことができ、し
かも、設備コストの低廉化を図ることのできる既設管穿
孔設備の切屑排出構造を提供する点にある。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and a first main problem is that the drilling operation is completed while the fluid discharged from the discharge port is easily controlled by an on-off valve. Sometimes, there is a need to provide a chip discharge structure for existing pipe drilling equipment that can easily remove an on-off valve in a non-disrupted state and that can reliably perform sealing treatment for a long period of time. The main problems are that the fluid discharged from the discharge port can be easily controlled, the sealing process after the end of the drilling operation can be performed efficiently and easily, and the equipment cost can be reduced. Another object of the present invention is to provide a chip discharge structure for existing pipe drilling equipment.
【０００５】[0005]
【課題を解決するための手段】本発明の請求項１による
特徴構成は、既設管の一部を密封するハウジング又はそ
れに連通する流路構成部材に、ハウジング内に位置する
既設管の管壁に対する穿孔作業に連れて発生した切屑を
流体と共に外部に排出する排出口部を形成してある既設
管穿孔設備の切屑排出構造であって、前記排出口部又は
それに接続されるニップルに、開閉弁を脱着自在に螺合
装着するための第１ネジ部と、該第１ネジ部に螺合装着
された開閉弁内の流路を通して挿入される仮閉止部材を
螺合装着するための第２ネジ部とを形成した点にある。According to a first aspect of the present invention, there is provided a housing for sealing a part of an existing pipe or a flow path connecting member communicating with the housing, wherein a pipe wall of the existing pipe located in the housing is provided. It is a chip discharge structure of an existing pipe drilling equipment having a discharge port for discharging chips generated along with a drilling operation together with a fluid to the outside, and an open / close valve is provided on the discharge port or a nipple connected thereto. A first screw portion for detachably screwing and mounting, and a second screw portion for screwing a temporary closing member inserted through a flow path in an on-off valve screwed to the first screw portion. And the point formed.
【０００６】上記特徴構成によれば、排出口部又はそれ
に接続されるニップルに形成された第１ネジ部に開閉弁
を螺合装着し、この開閉弁の開閉操作により、ハウジン
グ内に位置する既設管の管壁に対する穿孔装置による穿
孔作業に連れて発生した切屑を既設管から流出する流体
と共に外部に排出することができる。穿孔作業終了時に
は、閉止操作されている開閉弁の外側開口端部に仮閉止
部材を装着し、この仮閉止部材を開き操作された開閉弁
内の流路を通して排出口部側に挿入し、排出口部又はそ
れに接続されるニップルに形成された第２ネジ部に螺合
装着して、排出口部内の流路又はニップル内の流路を仮
閉止（仮密封）したのち、排出口部又はニップルに形成
された第１ネジ部から開閉弁を取り外す。[0006] According to the above-mentioned characteristic structure, the on-off valve is screwed into the discharge port or the first screw portion formed on the nipple connected to the outlet, and the on-off operation of the on-off valve causes the existing valve located in the housing to open. Chips generated during the drilling operation of the pipe wall by the drilling device can be discharged to the outside together with the fluid flowing out of the existing pipe. At the end of the drilling operation, a temporary closing member is attached to the outer opening end of the on-off valve that has been closed, and the temporary closing member is inserted into the discharge port side through a flow path in the on-off valve that has been opened, and drainage is performed. After being screwed and attached to a second screw portion formed on the outlet portion or a nipple connected to the outlet portion and temporarily closing (temporarily sealing) the flow path in the discharge port or the flow path in the nipple, the discharge port or the nipple The on-off valve is removed from the first threaded portion formed in the above.
【０００７】従って、排出口部から切屑と共に排出され
る流体を開閉弁で簡単に制御しながらも、穿孔作業終了
時には、不断流状態のまま開閉弁を簡便に取り外すこと
ができ、しかも、排出口部又はニップル内の第２ネジ部
に螺合装着された仮閉止部材で流路を仮閉止し、その状
態で本閉止処理（本密封処理）するから、長期間に亘っ
て確実に密封することができる。特に、排出口部に接続
されるニップルに第１ネジ部及び第２ネジ部が形成され
ている場合には、既存のハウジング又は流路構成部材に
形成されている排出口部に対しても適用することができ
るから、ハウジング又は流路構成部材を改造する必要が
無く、設備コストの低廉化を図ることができる。Therefore, while the fluid discharged together with the chips from the discharge port is easily controlled by the open / close valve, the open / close valve can be easily removed at the end of the drilling operation without disconnecting the flow. The flow passage is temporarily closed by a temporary closing member screwed to the second screw portion in the section or the nipple, and the main closing process (main sealing process) is performed in that state, so that the sealing is reliably performed over a long period of time. Can be. In particular, when the first screw portion and the second screw portion are formed in the nipple connected to the discharge port, the present invention is also applicable to the discharge port formed in the existing housing or the flow path component. Therefore, there is no need to modify the housing or the flow path component, and the equipment cost can be reduced.
【０００８】本発明の請求項２による既設管穿孔設備の
切屑排出構造の特徴構成は、前記第１ネジ部に、第２ネ
ジ部に仮閉止部材が螺合装着された状態で開口側流路部
分を密封する本閉止部材が螺合装着可能に構成されてい
るとともに、前記本閉止部材には、仮閉止部材の背面に
突出形成された操作部が排出流路軸線方向から入り込み
可能な凹部が形成されている点にある。According to a second aspect of the present invention, a chip discharging structure of the existing pipe drilling equipment is characterized in that the temporary closing member is screwed and mounted on the first screw portion and the second screw portion. The main closing member that seals the portion is configured to be screwably mounted, and the main closing member has a concave portion into which an operating portion protrudingly formed on the back surface of the temporary closing member can enter from the discharge channel axial direction. In that it is formed.
【０００９】上記特徴構成によれば、穿孔作業終了時
に、排出口部又はそれに接続されるニップルに形成され
た第２ネジ部に、第１ネジ部に螺合装着された開閉弁内
の流路を通して挿入される仮閉止部材を螺合装着し、更
に、開閉弁が取外された第１ネジ部に本閉止部材を螺合
装着することにより、両閉止部材の簡単な螺合操作で長
期間に亘って確実に密封することができるばかりでな
く、前記本閉止部材に形成された凹部内に仮閉止部材の
背面側の操作部が入り込むから、切屑排出構造の外方へ
の張出し量も減少することができる。According to the above feature, at the end of the drilling operation, the flow passage in the on-off valve screwed to the first screw portion is fitted to the second screw portion formed in the discharge port portion or the nipple connected to the discharge port portion. By screwing the temporary closing member inserted through, and further screwing the final closing member to the first screw portion from which the on-off valve has been removed, a simple screwing operation of both closing members for a long time Not only can be reliably sealed, but also the operation portion on the back side of the temporary closing member enters into the concave portion formed in the main closing member, so that the amount of protrusion of the chip discharging structure to the outside is also reduced. can do.
【００１０】本発明の請求項３による特徴構成は、既設
管の一部を密封するハウジング又はそれに連通する流路
構成部材に、ハウジング内に位置する既設管の管壁に対
する穿孔作業に連れて発生した切屑を流体と共に外部に
排出する排出口部を形成してある既設管穿孔設備の切屑
排出構造であって、前記排出口部又はそれに接続される
ニップルに、排出口部内の流路に連通する状態で外部に
開口する第１排出流路と、該第１排出流路の途中部分に
交差方向から連通する状態で外部に開口する第２排出流
路とが形成されているとともに、前記第１排出流路に
は、第２排出流路との連通口の下流側流路部分を閉止し
て、流体及び切屑を第１排出流路及び第２排出流路を通
して外部に排出案内する状態と、第２排出流路との連通
口の上流側流路部分を閉止する状態とに変更可能な仮閉
止部材が装着されている点にある。According to a third aspect of the present invention, there is provided a housing that seals a part of an existing pipe or a flow path component that communicates with the housing, in accordance with a drilling operation on a pipe wall of the existing pipe located in the housing. And a nipple connected to the discharge port or a nipple connected to the discharge port, the discharge port being configured to communicate with a flow path in the discharge port. A first discharge flow path that opens to the outside in a state, and a second discharge flow path that opens to the outside in a state communicating with the middle direction of the first discharge flow path in a cross direction, and the first discharge flow path is formed in the first discharge flow path. A state in which the downstream flow path portion of the communication port with the second discharge flow path is closed in the discharge flow path, and fluid and chips are discharged and guided to the outside through the first discharge flow path and the second discharge flow path; Upstream channel portion of the communication port with the second discharge channel Temporary closure member capable of changing into a state of closure is in that it is fitted.
【００１１】上記特徴構成によれば、排出口部又はそれ
に接続されるニップルに形成された第１排出流路と第２
排出流路とのうち、第１排出流路に装着される仮閉止部
材を、第２排出流路との連通口の下流側流路部分を閉止
する状態に配設することにより、前記ハウジング内に位
置する既設管の管壁に対する穿孔装置による穿孔作業に
連れて発生した切屑、及び、既設管から流出する流体
を、第１排出流路及び第２排出流路を通して共に外部に
排出することができる。According to the above-mentioned characteristic configuration, the first discharge passage formed in the discharge port or the nipple connected to the discharge port and the second discharge passage are connected to the second discharge passage.
By arranging a temporary closing member attached to the first discharge flow path in the discharge flow path so as to close a downstream flow path portion of the communication port with the second discharge flow path, It is possible to discharge the chips generated during the drilling operation of the pipe wall of the existing pipe located at the position by the drilling device and the fluid flowing out of the existing pipe to the outside through the first discharge channel and the second discharge channel. it can.
【００１２】穿孔作業終了時には、第１排出流路内のう
ち、第２排出流路との連通口の下流側流路部分を閉止す
る状態にある仮閉止部材を、第２排出流路との連通口の
上流側流路部分を閉止する位置に変更操作することによ
り、排出口部からの流体の排出が停止される。At the end of the drilling operation, the temporary closing member, which is in the first discharge flow path and closes the downstream flow path portion of the communication port with the second discharge flow path, is connected to the second discharge flow path. By performing an operation to change the upstream flow path portion of the communication port to a position for closing, the discharge of the fluid from the discharge port is stopped.
【００１３】従って、第１排出流路内に装着される仮閉
止部材を位置変更操作するだけで、排出口部から排出さ
れる流体を簡単に制御することができると共に、穿孔作
業終了後の密封処理も能率良く容易に行なうことがで
き、しかも、開閉弁が不要で、設備コストの低廉化を図
ることができる。特に、排出口部に接続されるニップル
に第１排出流路及び第２排出流路が形成されている場合
には、既存のハウジング又は流路構成部材に形成されて
いる排出口部に対しても適用することができるから、ハ
ウジング又は流路構成部材を改造する必要が無く、設備
コストの低廉化を図ることができる。Accordingly, the fluid discharged from the discharge port can be easily controlled only by changing the position of the temporary closing member mounted in the first discharge flow path, and the sealing after the completion of the drilling operation. The processing can be performed efficiently and easily, and furthermore, an on-off valve is not required, and the equipment cost can be reduced. In particular, when the first discharge flow path and the second discharge flow path are formed in the nipple connected to the discharge port, the discharge port formed in the existing housing or the flow path constituent member may be used. Therefore, it is not necessary to modify the housing or the flow path constituting member, and the equipment cost can be reduced.
【００１４】本発明の請求項４による既設管穿孔設備の
切屑排出構造の特徴構成は、前記第１排出流路の内周面
に、仮閉止部材と、該仮閉止部材が閉止位置にある状態
で第１排出流路の開口側を密閉する第１本閉止部材とを
螺合装着するための第１ネジ部が形成されているととも
に、前記第２排出流路の内周面には、仮閉止部材が閉止
位置にある状態で第２排出流路を密閉する第２本閉止部
材を螺合装着するための第２ネジ部が形成されている点
にある。According to a fourth aspect of the present invention, a feature of the chip discharging structure of the existing pipe drilling equipment is that a temporary closing member is provided on an inner peripheral surface of the first discharge channel, and the temporary closing member is in a closed position. A first screw portion for screwing and mounting a first closing member for sealing the opening side of the first discharge flow path is formed on the inner peripheral surface of the second discharge flow path. A second screw portion for screwing and mounting the second main closing member that seals the second discharge flow path in a state where the closing member is in the closed position is formed.
【００１５】上記特徴構成によれば、穿孔作業終了時
に、第１排出流路内のうち、第２排出流路との連通口の
下流側流路部分を閉止する状態にある仮閉止部材を、第
２排出流路との連通口の上流側流路部分を閉止する位置
に変更操作したのち、第１排出流路に、それの開口側を
密閉する第１本閉止部材を螺合装着し、更に、第２排出
流路に第２本閉止部材を螺合装着して密閉処理すること
により、各閉止部材の簡単な螺合操作で長期間に亘って
確実に密封することができる。[0015] According to the above-mentioned characteristic configuration, at the end of the drilling operation, the temporary closing member that is in a state of closing the downstream flow path portion of the communication port with the second discharge flow path in the first discharge flow path is provided. After performing a change operation to a position to close the upstream flow path portion of the communication port with the second discharge flow path, the first discharge flow path is screwed with a first closing member that seals the opening side of the first discharge flow path, Furthermore, by performing the sealing process by screwing the second closing member into the second discharge channel, the sealing can be reliably performed for a long time by a simple screwing operation of each closing member.
【００１６】[0016]
【発明の実施の形態】〔第１実施形態〕図１〜図８は、
水道管やガス管等の既設管（流体輸送管）１の一部であ
る特定箇所（分岐管接続相当箇所）を密封するハウジン
グＡ内において、既設管１内に流体を流動させたままの
不断流状態で分岐口１Ａを貫通形成して、その分岐口１
Ａに他の流体輸送管である分岐管２の端部を水平又は略
水平方向から連通接続する場合に用いられる既設管穿孔
設備、及び、それを用いての流体輸送経路変更方法を示
す。DESCRIPTION OF THE PREFERRED EMBODIMENTS [First Embodiment] FIGS.
In a housing A that seals a specific portion (a portion corresponding to a branch pipe connection) that is a part of an existing pipe (fluid transport pipe) 1 such as a water pipe or a gas pipe, the fluid is continuously flown in the existing pipe 1 in a housing A. In the flow state, the branch port 1A is formed to penetrate, and the branch port 1A is formed.
A shows an existing pipe perforation facility used when connecting the end of a branch pipe 2 as another fluid transport pipe from a horizontal or substantially horizontal direction, and a method of changing a fluid transport path using the same.
【００１７】前記ハウジングＡは、既設管１の管軸芯Ｘ
に対して交差（当該実施形態では直交）する水平又は略
水平方向に沿って外方に突出する分岐管部３を一体形成
してある鋳鉄製の分岐ケースから構成されていて、既設
管１の外周面との間を密封（液密又は気密状態に密封）
した状態で外嵌装着（外套装着）されているとともに、
前記分岐ケースＡの分岐管部３に密封状態で固定連結さ
れた作業用仕切弁（ハウジングＡに連通する流路構成部
材の一例）Ｂに対して、該作業用仕切弁Ｂ内の流路１１
ａ及び分岐管部３内の流路３ａを通して既設管１の管壁
に分岐口１Ａを切削形成する穿孔装置Ｃのケーシング７
と、穿孔装置Ｃの撤去後に連通接続される分岐管２とが
密封状態で選択的に固定連結自在に構成されている。The housing A is provided with a pipe core X of the existing pipe 1.
And a branch case made of cast iron integrally formed with a branch pipe portion 3 protruding outward along a horizontal or substantially horizontal direction intersecting (orthogonal in this embodiment) with the existing pipe 1. Sealed between outer peripheral surface (sealed in liquid-tight or air-tight state)
In the state that it was fitted with the outer fitting (clothes attached),
For a work partition valve (an example of a flow path component communicating with the housing A) B fixedly connected to the branch pipe portion 3 of the branch case A in a sealed state, a flow path 11 in the work partition valve B is provided.
a and a casing 7 of a drilling device C for cutting and forming a branch port 1A in the pipe wall of the existing pipe 1 through a flow path 3a in the branch pipe section 3.
And a branch pipe 2 that is connected to and connected to the drilling device C after removal of the drilling device C is configured to be selectively fixedly connectable in a sealed state.
【００１８】前記分岐ケースＡは、図１〜図４に示すよ
うに、既設管１に対して管径方向の両側方から外嵌装着
自在な管周方向で複数に分割（当該実施形態では二分
割）された半円筒状の分割ケース体４から構成されてい
て、各分割ケース体４の管周方向両端部には、既設管１
に外嵌された両分割ケース体４を締結手段の一例である
複数本のボルト５で脱着自在に固定連結するための連結
フランジ部４Ａが一体形成されているとともに、各分割
ケース体４の内周面の管軸芯Ｘ方向両端部に形成された
シール保持溝４Ｂには、既設管１の外周面との間を密封
する合成ゴム製（例えば、スチレンブタジエンゴム等）
の環状シール材６が装着されている。As shown in FIGS. 1 to 4, the branch case A is divided into a plurality in the circumferential direction of the pipe which can be externally fitted to the existing pipe 1 from both sides in the pipe diameter direction. Each of the divided case bodies 4 is provided with an existing pipe 1 at both ends in the circumferential direction of the tube.
A connecting flange portion 4A for detachably fixing and connecting the two divided case bodies 4 fitted to the outside with a plurality of bolts 5 as an example of fastening means is integrally formed. The seal holding grooves 4B formed at both ends of the peripheral surface of the tube axis X in the X direction are made of synthetic rubber (for example, styrene butadiene rubber or the like) for sealing the space between the existing tube 1 and the outer peripheral surface.
Is mounted.
【００１９】更に、一方の分割ケース体４の管軸芯Ｘ方
向中央部で、かつ、管周方向の中央部には、前記分岐管
部３が一体的に突出形成されているとともに、この分岐
管部３の先端に一体形成された連結フランジ部３Ａに
は、作業用仕切弁Ｂの弁ケース１１の一端に一体形成さ
れた連結フランジ部１１Ａが、締結手段の一例である複
数本のボルト５を介して脱着自在に固定連結されてい
る。Further, the branch pipe part 3 is integrally formed at the center of the one split case body 4 in the pipe axis X direction and at the center in the circumferential direction of the pipe. The connecting flange 3A integrally formed at one end of the valve case 11 of the work gate valve B is provided with a plurality of bolts 5A, which are an example of a fastening means, at the connecting flange 3A integrally formed at the tip of the pipe 3. And is fixedly connected to and detached from the main body via a detachable head.
【００２０】前記穿孔装置Ｃとしては、従来から種々の
構造のものが存在するが、その一例を挙げると、図１〜
図３に示すように、電動モータやエンジン等の原動部の
駆動により、ケーシング７に支承された回転並びに穿孔
軸線方向に摺動自在な駆動回転軸８に対して駆動回転力
と送り力とを付与し、この駆動回転軸８の先端部の連結
フランジ部８Ａに他種のものと付替え自在に連結された
回転切削具の一例であるホールソー９を、作業用仕切弁
Ｂ内の流路１１ａと分岐ケースＡの分岐管部３内の流路
３ａとを通して水平又は略水平方向から送り込むことに
より、既設管１の管壁に管軸芯Ｘに対して直交する方向
に貫通する分岐口１Ａを切削形成する。As the punching device C, there are conventionally those having various structures. For example, FIGS.
As shown in FIG. 3, by driving a driving unit such as an electric motor or an engine, a driving rotation force and a feeding force are applied to a rotation supported by a casing 7 and a driving rotation shaft 8 slidable in the direction of a drilling axis. In addition, a hole saw 9 which is an example of a rotary cutting tool which is variably connected to another connection flange portion 8A at the distal end portion of the driving rotary shaft 8 is connected to a flow path 11a in a working gate valve B. And from the horizontal or substantially horizontal direction through the flow path 3a in the branch pipe portion 3 of the branch case A, the branch port 1A penetrating the pipe wall of the existing pipe 1 in a direction orthogonal to the pipe axis X Cutting and forming.
【００２１】前記ホールソー９は、切削チップを先端部
に備えた円筒状ボディー９Ａの底壁部の中心位置に、切
削チップよりも前方に突出するセンタードリル９Ｂを設
けて構成されているとともに、前記ケーシング７の先端
部には、弁ケース１１の他端に一体形成された連結フラ
ンジ部１１Ｆに対して、締結手段の一例である複数本の
ボルト５・ナット１０を介して脱着自在に固定連結され
る連結フランジ部７Ａが一体形成されている。The hole saw 9 is provided with a center drill 9B projecting forward from the cutting tip at the center of the bottom wall of a cylindrical body 9A having a cutting tip at the tip. The front end of the casing 7 is detachably fixedly connected to a connection flange 11F integrally formed with the other end of the valve case 11 via a plurality of bolts 5 and nuts 10 as an example of a fastening means. Connection flange 7A is integrally formed.
【００２２】前記作業用仕切弁Ｂは、図１〜図５に示す
ように、弁ケース１１の上側筒部１１Ｂに一体形成され
た上側連結フランジ部１１Ｃに、弁ケース１１内の流路
１１ａを閉止可能な仕切弁体１２の格納空間Ｓを上側筒
部１１Ｂとで形成する弁カバー１３の連結フランジ部１
３Ａを、締結手段の一例である複数本のボルト５を介し
て固定連結するとともに、前記弁ケース１１内の流路軸
線方向に対して直交する上下方向（径方向）、つまり、
分岐管２の管軸芯Ｘ１方向に対して直交する上下方向に
開閉移動操作する開閉操作機構１４を設け、更に、前記
弁ケース１１内の流路軸線方向中間部には、流路閉止位
置（流路閉止姿勢）に下降操作された仕切弁体１２に対
して分岐管軸芯Ｘ１方向から接当する弁座１１Ｄを、分
岐管軸芯Ｘ１に対して直交する平面に沿って形成して構
成されている。As shown in FIGS. 1 to 5, the working gate valve B is provided with an upper connecting flange portion 11C integrally formed with an upper cylindrical portion 11B of the valve case 11 to connect a flow passage 11a in the valve case 11 to the upper connecting flange portion 11C. Connecting flange portion 1 of valve cover 13 forming storage space S of closing valve member 12 with upper cylindrical portion 11B
3A is fixedly connected via a plurality of bolts 5 which is an example of a fastening means, and is vertically (radially) perpendicular to the flow path axis direction in the valve case 11, that is,
An opening / closing mechanism 14 for opening and closing the branch pipe 2 in the vertical direction orthogonal to the direction of the pipe axis X1 is provided. Further, a flow path closing position ( A valve seat 11D that comes into contact with the gate valve body 12 that has been lowered to the flow path closing posture from the branch pipe axis X1 direction is formed along a plane orthogonal to the branch pipe axis X1. Have been.
【００２３】前記開閉操作機構１４は、図１〜図５に示
すように、弁カバー１３に対して縦軸芯周りで回転のみ
自在に取付けられた操作ネジ軸１４Ａに、仕切弁体１２
に形成されたネジ筒体１２Ａを螺合するとともに、前記
仕切弁体１２には、流路閉止位置への移動時に弁ケース
１１の内面に設けられたカム部１４Ｂと接当して、弁ケ
ース１１の弁座１１Ｄに対して仕切弁体１２を分岐管軸
芯Ｘ１方向から密封状態にまで圧接させる従動突起部１
４Ｃを設けて構成されている。As shown in FIGS. 1 to 5, the opening / closing operation mechanism 14 is attached to an operation screw shaft 14A that is rotatably mounted on the valve cover 13 only around a vertical axis.
The screw cylinder 12A formed on the valve case 11 is screwed, and the gate valve body 12 comes into contact with a cam portion 14B provided on the inner surface of the valve case 11 when the gate valve body 12 is moved to the flow path closing position. Driven projection 1 for pressing the partitioning valve body 12 against the eleventh valve seat 11D from the direction of the branch pipe axis X1 to a sealed state.
4C.
【００２４】そして、図３〜図８に示すように、前記弁
ケース１１の流路１１ａを形成する管壁部１１Ｅのう
ち、弁座１１Ｄ形成箇所又はそれよりも上流側近傍の底
部相当箇所には、流路閉止位置にある仕切弁体１２の外
周面との間にそれよりも上流側の流路１１ａ部分に連通
する溜り部１５が形成され、この溜り部１５には、既設
管１に対する穿孔装置Ｃによる穿孔作業に伴って発生し
た切屑を既設管１から流出する流体と共に外部に排出可
能な円筒状の排出口部１６が、径方向外方に突出する状
態で管壁部１１Ｅの接線方向に沿って一体的に連通形成
されている。As shown in FIGS. 3 to 8, the pipe wall 11E forming the flow path 11a of the valve case 11 is provided at a location corresponding to a valve seat 11D or at a location corresponding to a bottom near the upstream side thereof. Is formed with a reservoir 15 communicating with a portion of the flow passage 11a upstream of the gate valve body 12 at the flow passage closing position. A tangential line of the pipe wall 11E is formed in a state in which a cylindrical discharge port portion 16 capable of discharging chips generated during the drilling operation by the drilling device C and the fluid flowing out of the existing pipe 1 to the outside projects radially outward. They are formed integrally in communication along the direction.
【００２５】前記排出口部１６の内周面には、図６〜図
８に示すように、ニップル１７の外周面の一端部に形成
された雄ネジ部１７ａ又は他の作業用開閉弁１８の一端
側接続部に形成された雄ネジ部１８ｂと選択的に螺合接
続可能な雌ネジ部１６ａが形成されている。As shown in FIGS. 6 to 8, a male screw portion 17 a formed at one end of the outer peripheral surface of the nipple 17 or another working opening / closing valve 18 is provided on the inner peripheral surface of the discharge port portion 16. A female screw portion 16a is formed which can be selectively screwed and connected to the male screw portion 18b formed at the one end side connection portion.
【００２６】前記ニップル１７の内周面の他端部側に
は、図６〜図８に示すように、作業用開閉弁１８の一端
側雄ネジ部１８ｂと、後述の第２ネジ部１７ｃに仮止水
用としての仮閉止用（仮密封用）プラグ（仮閉止部材の
一例）２０が螺合装着された状態で開口側流路部分を密
閉する本閉止用（主密封用）プラグ（本閉止部材の一
例）１９とを択一的に脱着自在に螺合装着するための第
１ネジ部１７ｂと、ニップル１７内の流路を密封するべ
く、第１ネジ部１７ｂに螺合接続された開閉弁１８内の
流路１８ａを通して排出口部１６側に挿入される仮閉止
用プラグ２０を脱着自在に螺合装着するための第２ネジ
部１７ｃとが形成されているとともに、前記作業用開閉
弁１８の他端側接続部には、切屑を流体と共に排出する
切屑排出ホース２１の接続金具２２と、仮閉止用プラグ
２０を装着するためのプラグ装着治具Ｄの接続ケース２
３とを選択的に脱着自在に螺合装着するためのネジ部１
８ｃが形成されている。At the other end of the inner peripheral surface of the nipple 17, as shown in FIGS. 6 to 8, one end male screw portion 18b of the working on-off valve 18 and a second screw portion 17c described later. A temporary closing (temporary sealing) plug (temporary closing member) 20 for temporary closing water (an example of a temporary closing member) is a main closing (main sealing) plug (book) for sealing an opening-side flow path portion in a state of being screwed and mounted. One example of the closing member 19 is screwed and connected to the first screw portion 17b for selectively removably screwing the first screw portion 19 and the first screw portion 17b for sealing the flow path in the nipple 17. A second screw portion 17c for detachably screwing a temporary closing plug 20 inserted into the discharge port portion 16 through a flow path 18a in the on-off valve 18 is formed. The other end of the valve 18 has a chip discharge hose 21 for discharging chips together with a fluid. A connection fitting 22, the plug attachment jig D for mounting a temporary closure plug 20 connected Case 2
Screw part 1 for selectively screwing and detachably attaching the screw 3
8c is formed.
【００２７】また、前記本閉止用プラグ１９には、仮閉
止用プラグ２０の背面に突出形成された操作部２０ａが
排出流路軸線方向から入り込み可能な凹部１９ａが形成
されている。The main closing plug 19 has a concave portion 19a into which an operating portion 20a protruding from the back surface of the temporary closing plug 20 can enter from the axial direction of the discharge passage.
【００２８】前記プラグ装着治具Ｄは、図７に示すよう
に、仮閉止用プラグ２０を収納可能な接続ケース２３
と、接続ケース２３内に収納された仮閉止用プラグ２０
を螺合操作するための回転操作具の一例であるボックス
レンチ２４と、接続ケース２３に接続される開閉弁２５
を備えた排出ホース２６とから構成されているととも
に、前記ボックスレンチ２４が、接続ケース２３に対し
て外部から回転並びに押引操作自在に取付けられてい
る。As shown in FIG. 7, the plug mounting jig D has a connection case 23 capable of housing the temporary closing plug 20.
And the plug 20 for temporary closing stored in the connection case 23.
Box wrench 24, which is an example of a rotary operation tool for screwing the valve, and an on-off valve 25 connected to the connection case 23
, And the box wrench 24 is attached to the connection case 23 so as to be rotatable and pushed and pulled from the outside.
【００２９】次に、上述の如く構成された既設管穿孔設
備を用いての流体輸送経路変更方法について説明する。 （イ）図１、図２に示すように、既設管１の分岐管接続
相当箇所に、分岐管部３を一体形成してある分岐ケース
Ａを、既設管１の外周面との間を密封した状態で外嵌装
着するとともに、前記分岐ケースＡの分岐管部３の連結
フランジ部３Ａに、作業用仕切弁Ｂの一方の連結フラン
ジ部１１Ａを密封状態で固定連結し、更に、作業用仕切
弁Ｂの他方の連結フランジ部１１Ｆに、作業用仕切弁Ｂ
内の流路１１ａ及び分岐管部３内の流路３ａを通して既
設管１の管壁に分岐口１Ａを切削形成する穿孔装置Ｃの
連結フランジ部７Ａを密封状態で固定連結する。Next, a description will be given of a method of changing the fluid transport route using the existing pipe drilling equipment configured as described above. (A) As shown in FIGS. 1 and 2, a branch case A in which a branch pipe portion 3 is integrally formed at a portion corresponding to a branch pipe connection of the existing pipe 1 is sealed between the branch case A and the outer peripheral surface of the existing pipe 1. The connecting flange portion 11A of the working partition valve B is fixedly connected to the connecting flange portion 3A of the branch pipe portion 3 of the branch case A in a sealed state, and the working partition is further mounted. A working gate valve B is attached to the other connecting flange portion 11F of the valve B.
The connection flange portion 7A of the perforation device C for cutting and forming the branch port 1A in the pipe wall of the existing pipe 1 is fixedly connected to the pipe wall of the existing pipe 1 through the flow path 11a in the inside and the flow path 3a in the branch pipe section 3.
【００３０】また、図５、図６に示すように、前記弁ケ
ース１１の排出口部１６のネジ部１６ａに密封状態で螺
合接続されたニップル１７の第１ネジ部１７ｂに、作業
用開閉弁１８の雄ネジ部１８ｂを密封状態で螺合装着す
るとともに、この作業用開閉弁１８のネジ部１８ｃに、
切屑排出ホース２０の接続金具２１を密封状態で螺合接
続する。As shown in FIGS. 5 and 6, a work opening / closing portion is connected to a first screw portion 17b of a nipple 17 which is hermetically connected to a screw portion 16a of a discharge port portion 16 of the valve case 11. A male screw portion 18b of the valve 18 is screwed and mounted in a sealed state, and a screw portion 18c of the working on-off valve 18 is
The connection fitting 21 of the chip discharge hose 20 is screwed and connected in a sealed state.
【００３１】（ロ）図３に示すように、前記作業用仕切
弁Ｂの開閉操作機構１４を操作して、流路閉止位置にあ
る仕切弁体１２を流路開放位置に開き作動させるととも
に、穿孔装置Ｃによる穿孔作業に伴って発生した切屑及
び既設管１から流出する流体を共に外部の所定箇所に排
出することができるように、作業用開閉弁１８の操作レ
バー１８Ａを開き操作する。しかる後、穿孔装置Ｃの原
動部を駆動して、駆動回転軸８に駆動回転力と送り力と
を付与し、この駆動回転軸８の連結フランジ部８Ａに連
結された回転切削具の一例であるホールソー９を、作業
用仕切弁Ｂ内の流路１１ａ及び分岐管部３内の流路３ａ
を通して水平又は略水平方向から送り込むことにより、
既設管１の管壁に管径方向から分岐口１Ａを切削形成す
る。(B) As shown in FIG. 3, by operating the opening / closing operation mechanism 14 of the working gate valve B, the gate valve body 12 at the flow path closing position is opened to the flow path opening position and operated. The operating lever 18A of the working on-off valve 18 is opened and operated so that both the chips generated during the drilling operation by the drilling device C and the fluid flowing out of the existing pipe 1 can be discharged to a predetermined external location. Thereafter, the driving unit of the drilling device C is driven to apply a driving rotational force and a feed force to the driving rotary shaft 8, and an example of the rotary cutting tool connected to the connecting flange 8A of the driving rotary shaft 8 is provided. A certain hole saw 9 is connected to the flow path 11a in the work isolation valve B and the flow path 3a in the branch pipe section 3.
By feeding from a horizontal or nearly horizontal direction through
A branch port 1A is formed by cutting the pipe wall of the existing pipe 1 from the pipe diameter direction.
【００３２】この穿孔作業時には、図６に示すように、
管壁に切削形成された開口から流出して、分岐管部３内
の流路３ａを通して作業用仕切弁Ｂ内の流路１１ａにま
で流入してきた流体、及び、この流体によって押し流さ
れる切屑を、弁ケース１１の管壁部１１Ｅのうち、弁座
１１Ｄ形成箇所又はそれよりも上流側近傍の底部相当箇
所に形成した溜り部１５、該溜り部１５に接線方向から
連通する排出口部１６、該排出口部１６にニップル１７
を介して連通接続された作業用開閉弁１８、該作業用開
閉弁１８に螺合接続された切屑排出ホース２１を通して
外部の所定箇所に一緒に排出することができるから、切
屑が弁ケース１１内の弁座１１Ｄ形成相当箇所に堆積す
ることを抑制することができる。At the time of this drilling operation, as shown in FIG.
Fluid flowing out of the opening formed in the pipe wall and flowing into the flow path 11a in the working partition valve B through the flow path 3a in the branch pipe section 3, and the chips flushed by the fluid, In the pipe wall portion 11E of the valve case 11, a reservoir portion 15 formed at a portion corresponding to a bottom portion near or upstream of the valve seat 11D, a discharge port portion 16 communicating with the reservoir portion 15 in a tangential direction, Nipple 17 at outlet 16
Can be discharged together to a predetermined external location through a work opening / closing valve 18 connected to the work opening / closing valve 18 and a chip discharge hose 21 screwed to the work opening / closing valve 18. Can be suppressed from accumulating in the portion corresponding to the formation of the valve seat 11D.
【００３３】（ハ）既設管１に対する穿孔工程が終了す
ると、穿孔装置Ａの原動部を逆転駆動するか、若しく
は、手動ハンドルを操作して、ホールソー９を初期の待
機位置にまで戻し移動させたのち、図５に示すように、
作業用仕切弁Ｂの開閉操作機構１４を操作して、流路開
放位置にある仕切弁体１２を流路閉止位置に閉じ作動さ
せる。(C) When the piercing step for the existing pipe 1 is completed, the driving section of the piercing apparatus A is driven in reverse or the manual handle is operated to return the hole saw 9 to the initial standby position. Later, as shown in FIG.
By operating the opening / closing operation mechanism 14 of the work partition valve B, the gate valve body 12 at the flow path open position is closed to the flow path closed position and operated.
【００３４】また、穿孔装置Ｃのホールソー９を仕切弁
体１２よりも下流側の待機位置にまで戻し移動させると
き、このホールソー９の戻し移動に連れて切屑の一部が
弁ケース１１内の流路１１ａにまで運び込まれても、こ
の切屑を、弁座１１Ｄ形成箇所よりも上流側近傍の底部
相当箇所に形成した溜り部１５内に沈殿させることがで
きるとともに、作業用開閉弁１８の操作レバー１８Ａが
開き操作されている状態では、溜り部１５内に収集した
切屑を、排出口部１６を通して流体と共に外部に排出す
ることができるから、切屑が弁ケース１１内の弁座１１
Ｄ形成相当箇所に堆積することに起因する仕切弁体１２
のシール性能の低下（閉じ不良による漏洩）を防止する
ことができる。When the hole saw 9 of the drilling device C is moved back to the standby position on the downstream side of the gate valve body 12, some of the chips flow through the valve case 11 as the hole saw 9 returns. Even if the chips are carried to the path 11a, the chips can be settled in the pool portion 15 formed at a position corresponding to the bottom near the upstream side of the valve seat 11D forming portion, and the operating lever of the work opening / closing valve 18 can be operated. In the state where the opening 18A is operated, the chips collected in the reservoir 15 can be discharged to the outside together with the fluid through the discharge port 16, so that the chips are removed from the valve seat 11 in the valve case 11.
Gate valve body 12 resulting from accumulation at a portion corresponding to D formation
Of the sealing performance (leakage due to poor closing) can be prevented.
【００３５】（ニ）図７に示すように、穿孔作業に伴っ
て発生した切屑の排出工程が終了すると、作業用開閉弁
１８の操作レバー１８Ａを閉じ操作し、この作業用開閉
弁１８のネジ部１８ｃから切屑排出ホース２１の接続金
具２２を取り外し、その後に、仮閉止用プラグ２０を収
納してある装着治具Ｄの接続ケース２３を螺合装着す
る。(D) As shown in FIG. 7, when the step of discharging the chips generated during the drilling operation is completed, the operating lever 18A of the working on-off valve 18 is closed, and the screw of the working on-off valve 18 is screwed. The connection fitting 22 of the chip discharge hose 21 is removed from the portion 18c, and then the connection case 23 of the mounting jig D containing the plug 20 for temporary closing is screwed and mounted.
【００３６】次に、作業用開閉弁１８の操作レバー１８
Ａを開き操作し、装着治具Ｄのボックスレンチ２４を押
込み操作するとともに、仮閉止用プラグ２０がニップル
１７の第２ネジ部１７ｃの端部に接当した時点でボック
スレンチ２４を締込み側に回転操作し、仮閉止用プラグ
２０をニップル１７の第２ネジ部１７ｃに螺合装着す
る。Next, the operating lever 18 of the working on-off valve 18
A is opened, the box wrench 24 of the mounting jig D is pushed in, and the box wrench 24 is tightened when the temporary closing plug 20 contacts the end of the second screw portion 17c of the nipple 17. , And the temporary closing plug 20 is screwed into the second screw portion 17 c of the nipple 17.
【００３７】この仮閉止用プラグ２０の装着工程が終了
すると、図８に示すように、ニップル１７の第１ネジ部
１７ｂから作業用開閉弁１８を取り外し、その後に本閉
止用プラグ１９を螺合装着する。When the process of mounting the temporary closing plug 20 is completed, as shown in FIG. 8, the work opening / closing valve 18 is removed from the first screw portion 17b of the nipple 17, and then the final closing plug 19 is screwed. Installing.
【００３８】（ホ）図３、図４に示すように、前記穿孔
装置Ｃによる穿孔作業終了後に、作業用仕切弁Ｂの他方
の連結フランジ部１１Ｆから穿孔装置Ｃの連結フランジ
部７Ａを取り外したのち、作業用仕切弁Ｂの他方の連結
フランジ部１１Ｆに、分岐管２の連結フランジ部２Ａ
を、締結手段の一例であるボルト５・ナット１０を介し
て着脱自在に密封状態で固定連結する。(E) As shown in FIGS. 3 and 4, after the piercing operation by the piercing device C is completed, the connecting flange portion 7A of the piercing device C is removed from the other connecting flange portion 11F of the work gate valve B. Thereafter, the other connecting flange portion 11F of the work gate valve B is connected to the connecting flange portion 2A of the branch pipe 2.
Are detachably fixedly connected in a sealed state via bolts 5 and nuts 10 as an example of fastening means.
【００３９】〔第２実施形態〕上述の第１実施形態で
は、前記排出口部１６に接続されるニップル１７に、開
閉弁１８を脱着自在に螺合装着するための第１ネジ部１
７ｂと、該第１ネジ部１７ｂに螺合装着された開閉弁１
８内の流路１８ａを通して挿入される仮閉止用プラグ２
０を螺合装着するための第２ネジ部１７ｃとを形成した
が、図９に示すように、前記排出口部１６に、開閉弁１
８を脱着自在に螺合装着するための第１ネジ部１６ｂ
と、排出口部１６内の流路を密閉するべく、第１ネジ部
１６ｂに螺合装着された開閉弁１８内の流路１８ａを通
して挿入される仮閉止用プラグ２０を螺合装着するため
の第２ネジ部１６ｃとを形成して実施してもよい。尚、
ニップル１７以外の構成は、第１実施形態で説明した構
成と同一であるから、同一の構成箇所には、第１実施形
態と同一の番号を付記してそれの説明は省略する。[Second Embodiment] In the above-described first embodiment, the first screw portion 1 for detachably screwing the on-off valve 18 to the nipple 17 connected to the discharge port portion 16 is provided.
7b and the on-off valve 1 screwed to the first screw portion 17b
Plug 2 for temporary closing inserted through flow path 18a in
9 is formed with a second screw portion 17c for screw-fitting the opening and closing valve 1 as shown in FIG.
1st screw part 16b for detachably screwing and mounting 8
To screw-fit a temporary closing plug 20 inserted through a flow path 18a in an on-off valve 18 screwed to the first screw portion 16b to seal the flow path in the discharge port portion 16; The second screw portion 16c may be formed and implemented. still,
Since the configuration other than the nipple 17 is the same as the configuration described in the first embodiment, the same components are denoted by the same reference numerals as those in the first embodiment, and description thereof will be omitted.
【００４０】〔第３実施形態〕図１０〜図１２は作業用
仕切弁Ｂの切屑排出構造の別実施形態を示し、前記排出
口部１６の内周面には、ニップル３０の外周面の一端部
に形成された雄ネジ部３０ａと螺合接続可能な雌ネジ部
１６ａが形成されているとともに、前記ニップル３０に
は、弁ケース１１内の流路１１ａに対して接線方向から
連通する状態で外部に開口する第１排出流路３１と、該
第１排出流路３１の途中部分に直交方向（交差方向の一
例）から連通する状態で下方（連通方向は任意の方向に
設定することが可能）に向かって外部に開口する第２排
出流路３２とが形成されている。[Third Embodiment] FIGS. 10 to 12 show another embodiment of a chip discharging structure of the work gate valve B. An inner peripheral surface of the discharge port portion 16 has one end of an outer peripheral surface of the nipple 30. A female screw portion 16a which can be screw-connected to a male screw portion 30a formed in the portion is formed, and the nipple 30 is connected to the flow path 11a in the valve case 11 in a tangential direction. The first discharge flow path 31 opening to the outside and the lower part thereof (communication direction can be set to an arbitrary direction) in a state of communicating with the middle part of the first discharge flow path 31 from an orthogonal direction (an example of a cross direction). 2), and a second discharge channel 32 that opens to the outside.
【００４１】前記第１排出流路３１の内周壁に形成した
第１ネジ部３０ｂには、第２排出流路３２との連通口３
３よりも下流側流路部分を閉止（密閉）して、弁ケース
１１内の流体及び切屑を第１排出流路３１及び第２排出
流路３２を通して外部に排出案内する状態と、第２排出
流路３２との連通口３３よりも上流側流路部分を閉止
（密閉）する仮閉止状態（仮密封状態）とに取付け位置
変更操作自在な金属製の仮閉止用（仮密封用）プラグ
（仮閉止部材の一例）３４が脱着自在に螺合されてい
る。The first screw portion 30 b formed on the inner peripheral wall of the first discharge channel 31 has a communication port 3 with the second discharge channel 32.
A state in which the flow path portion downstream of the third case 3 is closed (closed), and the fluid and chips in the valve case 11 are guided to the outside through the first discharge flow path 31 and the second discharge flow path 32; A metal temporary closing (temporary sealing) plug (operable to change the mounting position) in a temporarily closed state (temporarily sealed state) that closes (closes) the flow path portion upstream of the communication port 33 with the flow path 32 ( An example of the temporary closing member 34 is detachably screwed.
【００４２】また、前記第１排出流路３１の第１ネジ部
３０ｂのうち、仮閉止位置にある仮閉止用プラグ３４よ
りも下流側流路部分には、第１排出流路３１を本閉止処
理（本密封処理）する第１本閉止用プラグ（第１本閉止
部材の一例）３５が螺合装着可能に構成されているとも
に、前記第２排出流路３２の内周壁に形成された第２ネ
ジ部３０ｃには、切屑を流体と共に排出する切屑排出ホ
ース２１の接続金具２２と、第２排出流路３２を本閉止
処理（本密封処理）する第２本閉止用プラグ（第２本閉
止部材の一例）３６とが選択的に螺合装着可能に構成さ
れている。In the first thread portion 30b of the first discharge channel 31, the first discharge channel 31 is completely closed at a portion downstream of the temporary closing plug 34 at the temporarily closed position. A first closing plug (an example of a first closing member) 35 that performs processing (final sealing processing) is configured to be screwably mountable, and a first closing plug 35 formed on an inner peripheral wall of the second discharge flow path 32. The 2 screw portion 30c has a connection fitting 22 of a chip discharge hose 21 for discharging chips together with a fluid, and a second closing plug (second closing) for completely closing (finally sealing) the second discharge flow path 32. (An example of a member) 36 can be selectively screwed and mounted.
【００４３】更に、前記仮閉止用プラグ３４には、該プ
ラグ３４を仮閉止位置にまで螺合操作したとき、第１排
出流路３１の内周壁に形成した円環状の受け座３０ｄに
圧接される円環状の弾性シール材３７が装着されてい
る。Further, when the plug 34 is screwed up to the temporary closing position, the temporary closing plug 34 is pressed against an annular receiving seat 30 d formed on the inner peripheral wall of the first discharge passage 31. An annular elastic seal member 37 is mounted.
【００４４】また、図１２に示すように、前記第１本閉
止用プラグ３５には、仮閉止用プラグ３４の背面に突出
形成された操作部３４ａが排出流路軸線方向から入り込
み可能な凹部３５ａが形成されている。As shown in FIG. 12, the first closing plug 35 has a concave portion 35a into which an operating portion 34a projecting from the back surface of the temporary closing plug 34 can enter from the axial direction of the discharge passage. Are formed.
【００４５】そして、穿孔作業時には、図１０に示すよ
うに、第１排出流路３１に螺合装着される仮閉止用プラ
グ３４を、第２排出流路３２との連通口３３よりも下流
側流路部分を閉止する流体排出案内位置に配置するとと
もに、第２排出流路３２の第２ネジ部３０ｃに切屑排出
ホース２１の接続金具２２を螺合接続し、穿孔作業に伴
って発生した切屑を既設管１から流出する流体と共に第
１排出流路３１、第２排出流路３２及び切屑排出ホース
２１を通して外部に排出する。During the drilling operation, as shown in FIG. 10, the temporary closing plug 34 screwed into the first discharge channel 31 is connected to the downstream side of the communication port 33 with the second discharge channel 32. At the fluid discharge guide position for closing the flow path portion, the connection fitting 22 of the chip discharge hose 21 is screwed and connected to the second screw portion 30c of the second discharge flow path 32, and the chips generated during the drilling operation are formed. Is discharged to the outside together with the fluid flowing out of the existing pipe 1 through the first discharge channel 31, the second discharge channel 32 and the chip discharge hose 21.
【００４６】また、穿孔作業が終了すると、図１１に示
すように、第１排出流路３１のうち、第２排出流路３２
の連通口３３よりも下流側流路部分に配置されていた仮
閉止用プラグ３４をそのまま奥側に螺合操作して、第２
排出流路３２の連通口３３よりも上流側の仮閉止位置に
移動させることにより、該プラグ３４をもって第１排出
流路３１を仮閉止処理し、その後、図１２に示すように
第２排出流路３２から切屑排出ホース２１の接続金具２
２を取外したのち、第１排出流路３１の開口側及び第２
排出流路３２の開口側に対してそれぞれ本閉止用プラグ
３５，３６を螺合装着することにより本閉止処理（本密
封処理）を行なう。When the drilling operation is completed, as shown in FIG.
The temporary closing plug 34 disposed in the flow path portion downstream of the communication port 33 is screwed to the rear side as it is,
By moving the plug 34 to the temporary closing position on the upstream side of the communication port 33 of the discharge flow path 32, the first discharge flow path 31 is temporarily closed by the plug 34, and then the second discharge flow as shown in FIG. Connection fitting 2 for chip discharge hose 21 from path 32
2 is removed, the opening side of the first discharge channel 31 and the second
The main closing plugs 35 and 36 are screwed to the opening side of the discharge flow path 32, respectively, to perform the main closing process (main sealing process).
【００４７】尚、その他の構成は、第１実施形態で説明
した構成と同一であるから、同一の構成箇所には、第１
実施形態と同一の番号を付記してそれの説明は省略す
る。The other configuration is the same as the configuration described in the first embodiment.
The same reference numerals as those of the embodiment are appended, and the description thereof is omitted.
【００４８】〔第４実施形態〕上述の第３実施形態で
は、前記排出口部１６に連通接続されるニップル３０
に、第１排出流路３１と第２排出流路３２とを形成した
が、図１３、図１４に示すように、前記排出口部１６
に、該排出口部１６内の流路に連通する状態で外部に開
口する第１排出流路３１と、該第１排出流路３１の途中
部分に交差方向から連通する状態で外部に開口する第２
排出流路３２とを形成するとともに、前記第１排出流路
３１に、第２排出流路３２との連通口３３の下流側流路
部分を閉止して、流体及び切屑を第１排出流路３１及び
第２排出流路３２を通して外部に排出案内する状態と、
第２排出流路３２との連通口３３の上流側流路部分を閉
止する状態とに変更可能な仮閉止用プラグ３４を装着し
て実施してもよい。[Fourth Embodiment] In the above-described third embodiment, the nipple 30 connected to the discharge port 16 is connected.
The first discharge channel 31 and the second discharge channel 32 are formed at the same time. As shown in FIGS.
In addition, a first discharge channel 31 that opens to the outside in a state of communicating with the flow channel in the discharge port portion 16, and opens to the outside in a state of communicating with an intermediate portion of the first discharge channel 31 in a cross direction. Second
A discharge passage 32 is formed, and a downstream passage portion of the communication port 33 with the second discharge passage 32 is closed in the first discharge passage 31 so that fluid and chips are removed from the first discharge passage 31. A state of guiding the discharge to the outside through the first and second discharge channels 32,
A temporary closing plug 34 that can be changed to a state in which the upstream flow path portion of the communication port 33 with the second discharge flow path 32 is closed may be mounted.
【００４９】また、当該第４実施形態では、上述した第
３実施形態と同様に、前記第１排出流路３１の内周面
に、仮閉止用プラグ３４と、該仮閉止用プラグ３４が閉
止位置にある状態で第１排出流路３１の開口側を閉止可
能な第１本閉止用プラグ３５とを螺合装着するための第
１ネジ部１６ｂが形成されているとともに、前記第２排
出流路３２の内周面には、仮閉止用プラグ３４が閉止位
置にある状態で第２排出流路３２を閉止可能な第２本閉
止用プラグ３６を螺合装着するための第２ネジ部１６ｃ
が形成されている。In the fourth embodiment, as in the third embodiment described above, the temporary closing plug 34 and the temporary closing plug 34 are closed on the inner peripheral surface of the first discharge passage 31. A first screw portion 16b for screwing a first main closing plug 35 capable of closing the opening side of the first discharge flow path 31 in the position where the first discharge flow path 31 is closed is formed. On the inner peripheral surface of the passage 32, a second screw portion 16c for screwing and attaching a second closing plug 36 capable of closing the second discharge flow path 32 in a state where the temporary closing plug 34 is in the closed position.
Are formed.
【００５０】尚、その他の構成は、第１実施形態及び第
３実施形態で説明した構成と同一であるから、同一の構
成箇所には、第１実施形態及び第３実施形態と同一の番
号を付記してそれの説明は省略する。Since the other configuration is the same as the configuration described in the first and third embodiments, the same components are denoted by the same reference numerals as those in the first and third embodiments. The description is omitted here.
【００５１】〔第５実施形態〕図１５は、上述した第４
実施形態の切屑排出構造の改造を示し、前記第１排出流
路３１の内周壁に形成した円環状の受け座１６ｄを、弁
ケース１１内の流路１１ａ側ほど小径となるテーパー面
に形成するとともに、合成樹脂製の仮閉止用プラグ３４
には、該プラグ３４を仮閉止位置にまで螺合操作したと
き、第１排出流路３１のテーパー状受け座１６ｄに密封
状態で圧接されるテーパー面３４ｂが形成されている。[Fifth Embodiment] FIG. 15 shows the fourth embodiment.
FIG. 4 shows a modification of the chip discharge structure of the embodiment, in which an annular receiving seat 16 d formed on the inner peripheral wall of the first discharge flow path 31 is formed on a tapered surface having a smaller diameter toward the flow path 11 a in the valve case 11. And a plug 34 for temporary closing made of synthetic resin.
Is formed with a tapered surface 34b which is pressed against the tapered receiving seat 16d of the first discharge channel 31 in a sealed state when the plug 34 is screwed to the temporary closing position.
【００５２】尚、その他の構成は、第４実施形態で説明
した構成と同一であるから、同一の構成箇所には、第４
実施形態と同一の番号を付記してそれの説明は省略す
る。The other configuration is the same as the configuration described in the fourth embodiment.
The same reference numerals as those of the embodiment are appended, and the description thereof is omitted.
【００５３】〔第６実施形態〕図１６、図１７は、水道
管やガス管等の既設管（流体輸送管）１の一部である特
定箇所を密封するハウジングＡ内において、既設管１内
に流体を流動させたままの不断流状態で、止水用弁体４
１を管径方向外方から挿入するための弁挿入口４０を形
成したのち、この形成された弁挿入口４０を通して管径
方向外方から止水用弁体４１を挿入する場合に用いられ
る既設管穿孔設備を備えた弁装着装置を示し、既設管１
のうち、弁挿入口形成相当箇所を除く部位の所要箇所
に、該既設管１の外周面との間を密封した状態でガイド
サポート部Ｅを外套（外装又は外嵌）固定し、このガイ
ドサポート部Ｅに、既設管１の弁挿入口形成相当箇所の
外周面側に密封された作業空間Ｓ１を区画形成するハウ
ジングＡを、既設管１の管軸芯Ｘ周りで回動自在に嵌合
（外嵌）保持させるとともに、前記ハウジングＡには、
該ハウジングＡの管軸芯Ｘ周りでの回動に連れて既設管
１の管壁に管周方向（円周方向）に沿った弁挿入口４０
を切削形成する穿孔装置Ｃと、切削形成された弁挿入口
４０を通して止水用弁体４１を管径方向外方から挿入移
動させる弁操作手段Ｆとを設けてある。Sixth Embodiment FIGS. 16 and 17 show the inside of a housing A for sealing a specific portion which is a part of an existing pipe (fluid transport pipe) 1 such as a water pipe or a gas pipe. The water blocking valve body 4 is in a non-disruptive flow state with the fluid flowing
1 is formed from the outside of the pipe in the radial direction, and then the water-stop valve 41 is inserted from the outside in the radial direction of the pipe through the formed valve insertion port 40. Fig. 3 shows a valve mounting device provided with pipe drilling equipment, and shows an existing pipe 1
Of these, a guide support portion E is fixed to a required portion other than a portion corresponding to the valve insertion opening while the space between the guide support portion E and the outer peripheral surface of the existing pipe 1 is sealed, and the guide support portion E is fixed. A housing A that defines a work space S1 sealed on the outer peripheral surface side of the portion corresponding to the valve insertion opening of the existing pipe 1 is rotatably fitted to the portion E around the pipe axis X of the existing pipe 1 ( Outer fitting) and the housing A
As the housing A rotates around the pipe axis X, a valve insertion port 40 is formed in the pipe wall of the existing pipe 1 along the pipe circumferential direction (circumferential direction).
And a valve operating means F for inserting and moving the water stop valve element 41 from the outside in the pipe diameter direction through the cut and formed valve insertion port 40.
【００５４】前記ガイドサポート部Ｅは、既設管１の弁
挿入口形成相当箇所の管軸芯Ｘ方向両側脇に外套状態で
固定される一対のサポート体Ｅ１，Ｅ２から構成され、
サポート体Ｅ１，Ｅ２の各々は、既設管１に対して管径
方向の両側方から外套装着自在な管周方向で二分割さ
れ、かつ、ボルト・ナット等を介して固定連結可能な半
円筒状の分割サポート体から構成されているとともに、
前記各サポート体Ｅ１，Ｅ２の外周面には、ハウジング
Ａを既設管１の管軸芯Ｘ周りで回動自在に摺動案内する
回動ガイド面４２が形成されている。The guide support portion E is composed of a pair of support bodies E1 and E2 which are fixed in a jacket state on both sides of the existing pipe 1 at the positions corresponding to the valve insertion openings in the X-axis of the pipe axis.
Each of the support bodies E1 and E2 is divided into two parts in the circumferential direction of the pipe that can be mounted on the outer circumference of the existing pipe 1 from both sides in the pipe diameter direction, and can be fixedly connected via bolts and nuts. Of the split support body,
On the outer peripheral surface of each of the support bodies E1 and E2, a rotation guide surface 42 for slidingly guiding the housing A around the pipe axis X of the existing pipe 1 is formed.
【００５５】前記ハウジングＡは、既設管１に取付けら
れた両サポート体Ｅ１，Ｅ２の回動ガイド面４２に対し
て管径方向の一側方から外套装着可能な半円筒状の第１
カバー４４と、既設管１に取付けられた両サポート体Ｅ
１，Ｅ２の回動ガイド面４２に対して管径方向の他側方
から外套装着可能で、かつ、止水用弁体４１を管径方向
に沿って移動案内する弁ガイド筒体４５Ａを備えた第２
カバー４５と、第２カバー４５の上側連結フランジ部４
５ａにボルト・ナットを介して連結可能な連結フランジ
部４６ａを備え、かつ、弁ガイド筒体４５Ａ内の弁格納
空間Ｓ２に連通する弁操作用空間Ｓ３を形成してある第
３カバー４６とから構成されている。The housing A is a semicylindrical first housing that can be mounted on the rotation guide surfaces 42 of both supports E1 and E2 attached to the existing pipe 1 from one side in the pipe diameter direction.
The cover 44 and the two support bodies E attached to the existing pipe 1
A valve guide cylinder 45A that can be jacketed from the other side in the pipe diameter direction with respect to the rotation guide surface 42 of E1 and E2 and guides the water stop valve body 41 to move along the pipe diameter direction. The second
Cover 45 and upper connection flange 4 of second cover 45
The third cover 46 is provided with a connection flange 46a connectable to the valve 5a via bolts and nuts, and forms a valve operation space S3 communicating with the valve storage space S2 in the valve guide cylinder 45A. It is configured.
【００５６】また、前記第２カバー４５の同一円周線上
の二個所には、穿孔装置Ｃの回転切削具の一例であるエ
ンドミル４７や内視鏡等を選択的に取付け可能な取付け
部４８が形成されているとともに、前記第１カバー４４
の底壁部には、穿孔装置Ｃのエンドミル４７による穿孔
作業に伴って発生した切屑を既設管１から流出する流体
と共に外部に排出可能な円筒状の排出口部１６が、径方
向外方に突出する状態で接線方向に沿って一体的に連通
形成されている。At two places on the same circumferential line of the second cover 45, there are provided mounting portions 48 for selectively mounting an end mill 47, an endoscope, etc., which are examples of a rotary cutting tool of the drilling device C. And the first cover 44
On the bottom wall portion, a cylindrical discharge port portion 16 capable of discharging chips generated during the drilling operation by the end mill 47 of the drilling device C to the outside together with the fluid flowing out of the existing pipe 1 is provided radially outward. The protruding portions are formed so as to be integrally communicated along the tangential direction.
【００５７】前記排出口部１６の内周面には、第３実施
形態と同様に、ニップル３０の外周面の一端部に形成さ
れた雄ネジ部３０ａと螺合接続可能な雌ネジ部１６ａが
形成されているとともに、前記ニップル３０には、作業
空間Ｓ１に対して接線方向から連通する状態で外部に開
口する第１排出流路３１と、該第１排出流路３１の途中
部分に直交方向（交差方向の一例）から連通する状態で
下方（連通方向は任意の方向に設定することが可能）に
向かって外部に開口する第２排出流路３２とが形成され
ている。As in the third embodiment, a female screw portion 16a which can be threadably connected to a male screw portion 30a formed at one end of the outer peripheral surface of the nipple 30 is provided on the inner peripheral surface of the discharge port portion 16, as in the third embodiment. The nipple 30 is formed with a first discharge passage 31 that opens to the outside in a state where the nipple 30 communicates with the working space S1 from a tangential direction. A second discharge flow path 32 that opens to the outside downward (communication direction can be set to any direction) is formed in a state of communicating from (an example of a crossing direction).
【００５８】前記第１排出流路３１の内周壁に形成した
第１ネジ部３０ｂには、第２排出流路３２との連通口３
３よりも下流側流路部分を閉止して、弁ケース１１内の
流体及び切屑を第１排出流路３１及び第２排出流路３２
を通して外部に排出案内する状態と、第２排出流路３２
との連通口３３よりも上流側流路部分を閉止する仮閉止
状態とに取付け位置変更操作自在な金属製の仮閉止用
（仮密封用）プラグ（仮閉止部材の一例）３４が脱着自
在に螺合されている。The first screw portion 30 b formed on the inner peripheral wall of the first discharge channel 31 has a communication port 3 with the second discharge channel 32.
3 and the fluid and chips in the valve case 11 are removed by the first discharge channel 31 and the second discharge channel 32.
And the second discharge flow path 32
A temporary closing (temporary sealing) plug (an example of a temporary closing member) 34 made of a metal, which can be mounted and changed in a temporarily closed state in which the flow path portion upstream of the communication port 33 is closed. It is screwed.
【００５９】また、前記第１排出流路３１の第１ネジ部
３０ｂのうち、閉止位置にある仮閉止用プラグ３４より
も下流側流路部分には、第３実施形態と同様に、第１排
出流路３１を本閉止処理（本密封処理）する第１本閉止
用プラグ（第１本閉止部材の一例）３５が螺合装着可能
に構成されているともに、前記第２排出流路３２の内周
壁に形成された第２ネジ部３０ｃには、切屑を流体と共
に排出する切屑排出ホース２１の接続金具２２と、第２
排出流路３２を本閉止処理（本密封処理）する第２本閉
止用プラグ（第２本閉止部材の一例）３６とが択一的に
螺合装着可能に構成されている。As in the third embodiment, the first screw portion 30b of the first discharge flow path 31 is provided with a first flow path portion downstream of the temporary closing plug 34 in the closed position, as in the third embodiment. A first main closing plug (an example of a first main closing member) 35 for performing a main closing process (main sealing process) on the discharge flow path 31 is configured to be screwably mountable. The second screw portion 30c formed on the inner peripheral wall has a fitting 22 of a chip discharge hose 21 for discharging chips together with a fluid,
A second main closing plug (an example of a second main closing member) 36 for performing a main closing process (main sealing process) on the discharge flow path 32 is configured to be screw-installed alternatively.
【００６０】尚、当該第６実施形態では、前記第１カバ
ー４４の底壁部に、穿孔装置Ｃのエンドミル４７による
穿孔作業に伴って発生した切屑を既設管１から流出する
流体と共に外部に排出可能な円筒状の排出口部１６を形
成したが、この排出口部１６を、第２カバー４５の取付
け部４８に形成して実施してもよい。In the sixth embodiment, the chips generated during the drilling operation by the end mill 47 of the drilling device C are discharged to the bottom wall of the first cover 44 together with the fluid flowing out of the existing pipe 1. Although the possible cylindrical outlet 16 is formed, the outlet 16 may be formed in the mounting portion 48 of the second cover 45 for implementation.
【００６１】〔その他の実施形態〕 （１） 上述の第１〜第５実施形態では、作業用仕切弁
Ｂの弁ケース１１の弁座形成箇所又はそれよりも上流側
近傍の底部相当箇所に、流路閉止位置にある仕切弁体１
２よりも上流側の流路１１ａ部分に連通する溜り部１５
と、この溜り部１５内の切屑を流体と共に外部に排出可
能な排出口部１６とを形成したが、この溜り部１５と排
出口部１６とを、弁ケース１１の弁座形成相当箇所又は
それよりも下流側に偏位した部位の少なくとも底部相当
箇所に形成して実施してもよく、更に、前記排出口部１
６のみを、弁ケース１１の少なくとも底部相当箇所に形
成して実施してもよい。[Other Embodiments] (1) In the above-described first to fifth embodiments, the working partition valve B is provided at the position where the valve seat of the valve case 11 is formed or at the position corresponding to the bottom near the upstream side thereof. Gate valve element 1 in flow path closed position
Pool 15 communicating with the flow path 11a on the upstream side of
And a discharge port 16 capable of discharging the chips in the pool portion 15 to the outside together with the fluid. The pool portion 15 and the discharge port portion 16 are connected to a portion corresponding to the formation of the valve seat of the valve case 11 or the same. It may be formed at least at a position corresponding to the bottom of a portion deviated to the downstream side, and the discharge port 1
Only 6 may be formed at least at a position corresponding to the bottom of the valve case 11.
【００６２】（２） 前記穿孔装置Ｃとしては、従来か
ら種々のものが開発されており、ハウジングＡ内に位置
する既設管１の管壁に所定の穿孔作業を行なうことので
きるものであれば、如何なる構造のものを用いて実施し
てもよい。(2) Various types of perforating devices C have been developed in the past, as long as they can perform a predetermined perforating operation on the pipe wall of the existing pipe 1 located in the housing A. Any structure may be used.
【００６３】（３） 上述の第１実施形態では、前記ニ
ップル１７の内周面に、図８に示すように、仮止水用と
しての仮閉止用プラグ（仮閉止部材の一例）２０が螺合
装着される小径の第２ネジ部１７ｃと、この第２ネジ部
１７ｃに仮閉止用プラグ２０が螺合装着された状態で開
口側流路部分を閉止する本閉止用プラグ（本閉止部材の
一例）１９を螺合装着するための大径の第１ネジ部１７
ｂとを形成したが、図１８の第７実施形態に示すよう
に、前記ニップル１７の内周面に、該ニップル１７内の
流路を密閉する仮閉止用プラグ（仮閉止部材の一例）２
０が螺合装着される第２ネジ部１７ｃを形成するととも
に、ニップル１７の外周面に、第２ネジ部１７ｃに仮閉
止用プラグ２０が螺合装着された状態で開口側流路部分
を密閉する本閉止用キャップ（本閉止部材の一例）１９
を螺合装着するための第１ネジ部１７ｂを形成して実施
してもよい。尚、この第７実施形態におけるその他の構
成は、上述の第１実施形態と同一である。(3) In the above-described first embodiment, as shown in FIG. 8, a temporary closing plug (an example of a temporary closing member) 20 for temporary stopping water is screwed on the inner peripheral surface of the nipple 17. A small-diameter second screw portion 17c to be fitted and a main-closing plug (for the main-closing member) for closing the opening-side flow path portion in a state in which the temporary-closing plug 20 is screwed to the second screw portion 17c. Example) Large-diameter first screw portion 17 for screwing in 19
b, but as shown in the seventh embodiment of FIG. 18, a plug for temporary closing (an example of a temporary closing member) 2 that seals a flow path in the nipple 17 on the inner peripheral surface of the nipple 17.
0 forms a second screw portion 17c to be screw-fitted, and seals the opening-side flow path portion in a state where the temporary closing plug 20 is screwed to the second screw portion 17c on the outer peripheral surface of the nipple 17. Closing cap (an example of a closing member) 19
May be implemented by forming a first screw portion 17b for screw-fitting. The other configurations in the seventh embodiment are the same as those in the first embodiment.
【図１】本発明の第１実施形態を示す穿孔作業前の全体
の一部断面側面図FIG. 1 is a partial cross-sectional side view of a whole before a drilling operation according to a first embodiment of the present invention.
【図２】穿孔作業前の全体の一部断面平面図FIG. 2 is a partial cross-sectional plan view of the whole before a drilling operation.
【図３】穿孔作業時の全体の一部断面側面図FIG. 3 is a partial cross-sectional side view of the entire body during a drilling operation.
【図４】分岐管接続時の全体の一部断面側面図FIG. 4 is a partial cross-sectional side view of the whole when a branch pipe is connected.
【図５】作業用仕切弁の一部断面正面図FIG. 5 is a partial sectional front view of a work gate valve;
【図６】切屑排出時における作業用仕切弁の要部の拡大
断面正面図FIG. 6 is an enlarged cross-sectional front view of a main part of a work gate valve when chips are discharged.
【図７】仮閉止用プラグの装着時における作業用仕切弁
の要部の拡大断面正面図FIG. 7 is an enlarged cross-sectional front view of a main part of the work gate valve when the temporary closing plug is mounted.
【図８】本閉止用プラグの装着時における作業用仕切弁
の要部の拡大断面正面図FIG. 8 is an enlarged cross-sectional front view of a main part of the work gate valve when the main closing plug is mounted.
【図９】本発明の第２実施形態を示す作業用仕切弁の要
部の拡大断面正面図FIG. 9 is an enlarged sectional front view of a main part of a work gate valve according to a second embodiment of the present invention.
【図１０】本発明の第３実施形態を示し、切屑排出時に
おける作業用仕切弁の要部の拡大断面正面図FIG. 10 shows the third embodiment of the present invention, and is an enlarged sectional front view of a main part of a work gate valve at the time of chip discharge.
【図１１】仮閉止用プラグの装着時における作業用仕切
弁の要部の拡大断面正面図FIG. 11 is an enlarged cross-sectional front view of a main part of the work gate valve when the temporary closing plug is mounted.
【図１２】本閉止用プラグの装着時における作業用仕切
弁の要部の拡大断面正面図FIG. 12 is an enlarged cross-sectional front view of a main part of the work gate valve when the main closing plug is mounted.
【図１３】本発明の第４実施形態を示し、作業用仕切弁
の要部の分解拡大断面正面図FIG. 13 shows a fourth embodiment of the present invention, and is an exploded enlarged sectional front view of a main part of a work gate valve.
【図１４】本閉止用プラグの装着時における作業用仕切
弁の要部の拡大断面正面図FIG. 14 is an enlarged cross-sectional front view of a main part of the work gate valve when the main closing plug is mounted.
【図１５】本発明の第５実施形態を示す作業用仕切弁の
要部の拡大断面正面図FIG. 15 is an enlarged sectional front view of a main part of a work gate valve according to a fifth embodiment of the present invention.
【図１６】本発明の第６実施形態を示す弁装着装置全体
の断面正面図FIG. 16 is a sectional front view of the entire valve mounting device according to a sixth embodiment of the present invention.
【図１７】全体の断面側面図FIG. 17 is a sectional side view of the whole.
【図１８】本発明の第７実施形態を示す作業用仕切弁の
要部の拡大断面正面図FIG. 18 is an enlarged cross-sectional front view of a main part of a work gate valve according to a seventh embodiment of the present invention.
Ａ ハウジング（分岐ケース） Ｂ 流路構成部材（作業用仕切弁） １ 既設管 １６ 排出口部 １６ｂ 第１ネジ部 １６ｃ 第２ネジ部 １７ ニップル １７ｂ 第１ネジ部 １７ｃ 第２ネジ部 １８ 開閉弁 １９ 本閉止部材（本閉止用プラグ） １９ａ 凹部 ２０ 仮閉止部材（仮閉止用プラグ） ２０ａ 操作部 ３０ ニップル ３０ｂ 第１ネジ部 ３０ｃ 第２ネジ部 ３１ 第１排出流路 ３２ 第２排出流路 ３３ 連通孔 ３４ 仮閉止部材（仮閉止用プラグ） ３４ａ 操作部 ３５ 第１本閉止部材（第１本閉止用プラグ） ３５ａ 凹部 ３６ 第２本閉止部材（第２本閉止用プラグ） Reference Signs List A housing (branch case) B flow path constituent member (operating gate valve) 1 Existing pipe 16 Discharge port 16b First screw part 16c Second screw part 17 Nipple 17b First screw part 17c Second screw part 18 On-off valve 19 Main closing member (final closing plug) 19a recess 20 Temporary closing member (temporary closing plug) 20a Operation section 30 Nipple 30b First screw section 30c Second screw section 31 First discharge flow path 32 Second discharge flow path 33 Communication Hole 34 Temporary closing member (temporary closing plug) 34a Operation section 35 First closing member (first closing plug) 35a recess 36 Second closing member (second closing plug)
Claims (4)
それに連通する流路構成部材に、ハウジング内に位置す
る既設管の管壁に対する穿孔作業に連れて発生した切屑
を流体と共に外部に排出する排出口部を形成してある既
設管穿孔設備の切屑排出構造であって、 前記排出口部又はそれに接続されるニップルに、開閉弁
を脱着自在に螺合装着するための第１ネジ部と、該第１
ネジ部に螺合装着された開閉弁内の流路を通して挿入さ
れる仮閉止部材を螺合装着するための第２ネジ部とを形
成してある既設管穿孔設備の切屑排出構造。1. A chip that is generated in a housing that seals a part of an existing pipe or a flow path component that communicates with the housing and that is drilled into a pipe wall of the existing pipe located in the housing, is discharged to the outside together with a fluid. A chip discharge structure of an existing pipe drilling facility having a discharge port portion, wherein a first screw portion for detachably screwing an open / close valve to the discharge port portion or a nipple connected thereto, The first
A chip discharge structure of an existing pipe drilling facility, wherein a second screw portion for screwing a temporary closing member inserted through a flow path in an on-off valve screwed to a screw portion is formed.
止部材が螺合装着された状態で開口側流路部分を密封す
る本閉止部材が装着可能に構成されているとともに、前
記本閉止部材には、仮閉止部材の背面に突出形成された
操作部が排出流路軸線方向から入り込み可能な凹部が形
成されている請求項１記載の既設管穿孔設備の切屑排出
構造。2. The first screw portion is configured such that a main closing member that seals the opening side flow path portion in a state where the temporary closing member is screwed and mounted on the second screw portion is attachable, and 2. The chip discharging structure according to claim 1, wherein the main closing member has a concave portion into which an operating portion projecting from a rear surface of the temporary closing member can enter from the axial direction of the discharge flow path.
それに連通する流路構成部材に、ハウジング内に位置す
る既設管の管壁に対する穿孔作業に連れて発生した切屑
を流体と共に外部に排出する排出口部を形成してある既
設管穿孔設備の切屑排出構造であって、 前記排出口部又はそれに接続されるニップルに、排出口
部内の流路に連通する状態で外部に開口する第１排出流
路と、該第１排出流路の途中部分に交差方向から連通す
る状態で外部に開口する第２排出流路とが形成されてい
るとともに、前記第１排出流路には、第２排出流路との
連通口の下流側流路部分を閉止して、流体及び切屑を第
１排出流路及び第２排出流路を通して外部に排出案内す
る状態と、第２排出流路との連通口の上流側流路部分を
閉止する状態とに変更可能な仮閉止部材が装着されてい
る既設管穿孔設備の切屑排出構造。3. A chip that is generated in a housing for sealing a part of an existing pipe or a flow path constituent member communicating with the housing, which is generated by a drilling operation on a pipe wall of the existing pipe located in the housing, is discharged to the outside together with a fluid. A chip discharge structure of an existing pipe drilling facility having a discharge port, wherein a first discharge opening to the outside at the discharge port or a nipple connected thereto in a state of communicating with a flow path in the discharge port. A flow path and a second discharge flow path which is open to the outside in a state communicating with the middle part of the first discharge flow path in a cross direction are formed, and the first discharge flow path includes a second discharge flow path. A state in which the downstream flow path portion of the communication port with the flow path is closed to guide fluid and chips to the outside through the first discharge flow path and the second discharge flow path, and a communication port with the second discharge flow path Temporary closure that can be changed to a state that closes the upstream flow path part of Chip discharge structure of the existing pipe drilling equipment which member is mounted.
部材と、該仮閉止部材が閉止位置にある状態で第１排出
流路の開口側を密閉する第１本閉止部材とを螺合装着す
るための第１ネジ部が形成されているとともに、前記第
２排出流路の内周面には、仮閉止部材が閉止位置にある
状態で第２排出流路を密閉する第２本閉止部材を螺合装
着するための第２ネジ部が形成されている請求項３記載
の既設管穿孔設備の切屑排出構造。4. A temporary closing member and a first closing member for sealing an opening side of the first discharge channel when the temporary closing member is in a closed position on an inner peripheral surface of the first discharge channel. A first screw portion for screwing the second discharge passage is formed, and the second discharge passage is hermetically sealed on the inner peripheral surface of the second discharge passage in a state where the temporary closing member is in the closed position. 4. The chip discharging structure according to claim 3, wherein a second screw portion for screwing the second closing member is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001127941A JP3989187B2 (en) | 2001-04-25 | 2001-04-25 | Chip discharging structure of existing pipe drilling equipment and chip discharging method of existing pipe drilling equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001127941A JP3989187B2 (en) | 2001-04-25 | 2001-04-25 | Chip discharging structure of existing pipe drilling equipment and chip discharging method of existing pipe drilling equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002321109A true JP2002321109A (en) | 2002-11-05 |
| JP3989187B2 JP3989187B2 (en) | 2007-10-10 |
Family
ID=18976725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001127941A Expired - Lifetime JP3989187B2 (en) | 2001-04-25 | 2001-04-25 | Chip discharging structure of existing pipe drilling equipment and chip discharging method of existing pipe drilling equipment |
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| JP (1) | JP3989187B2 (en) |
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