JP4447412B2

JP4447412B2 - Continuous water flow path forming device for existing fluid pipes

Info

Publication number: JP4447412B2
Application number: JP2004262857A
Authority: JP
Inventors: 実澤田
Original assignee: Cosmo Koki Co Ltd
Current assignee: Cosmo Koki Co Ltd
Priority date: 2004-09-09
Filing date: 2004-09-09
Publication date: 2010-04-07
Anticipated expiration: 2024-09-09
Also published as: JP2005048955A

Description

本発明は、例えば上下水道管やガス管等の既設流体管を、内部の流体の流下を一時的に遮断することなく流路切替できるようにした既設流体管の不断水流路形成装置に関する。 The present invention relates to a continuous water flow path forming apparatus for an existing fluid pipe that can switch the flow path of an existing fluid pipe such as a water and sewage pipe and a gas pipe without temporarily blocking the flow of an internal fluid.

従来の既設流体管の不断水流路形成装置は、分割可能な筐体を既設流体管の外周面に水密的に装着し、筐体内部の既設流体管を切断した後、既設流体管の切断面間に仕切体等の流路形成装置を設置している（例えば、特許文献１参照）。 A conventional continuous flow channel forming device for an existing fluid pipe is mounted on a peripheral surface of an existing fluid pipe in a watertight manner, and after cutting the existing fluid pipe inside the casing, the cut surface of the existing fluid pipe A flow path forming device such as a partition is installed between them (see, for example, Patent Document 1).

実公平４−２９１８８号公報（第１頁、第３図）Japanese Utility Model Publication No. 4-29188 (page 1, Fig. 3)

しかしながら、特許文献１にあっては、既設流体管の切断の後、管内において切断面間に設置した仕切体が所定位置に設置される場合において、前記仕切体と筐体の内側面との間は水密性を必要とすることから、前記仕切体が下方押力により下降動作する際に、管内の水圧等の影響を受けて、前記仕切体と筐体の内側面の設置位置との間にずれが生じ、前記設置位置に正確に設置できないという問題があった。 However, in Patent Document 1, after the existing fluid pipe is cut, when the partition installed between the cut surfaces in the pipe is installed at a predetermined position, between the partition and the inner surface of the housing. Since watertightness is required, when the partition is lowered by a downward pressing force, the partition is affected by water pressure in the pipe and the space between the partition and the installation position of the inner surface of the housing. There was a problem that a shift occurred and the installation position could not be accurately set.

本発明は、このような問題点に着目してなされたもので、既設管の切断の後、管内において切断面間に仕切体が所定位置に設置される場合において、前記仕切体が下方押力により下降動作する際に、管内の水圧等の影響を受けてずれが生じても、前記設置位置に向けて修正され、前記仕切体が正確に設置されることを目的とする。 The present invention has been made paying attention to such problems, and when a partition is installed at a predetermined position between cut surfaces in a pipe after the existing pipe is cut, the partition is pushed downward. Even when a shift occurs due to the influence of the water pressure or the like in the pipe during the lowering operation, the correction is made toward the installation position, and the partition body is installed accurately.

上記課題を解決するために、本発明の請求項１に記載の既設流体管の不断水流路形成装置は、既設流体管の外周面を少なくとも３方向の流路を確保できる筐体で密封し、不断水状態で前記既設流体管を切断して、前記筐体内部に設置した挿入手段により、仕切体を設置して他の流路を形成する既設流体管の不断水流路形成装置であって、
前記仕切体が前記筐体内の流体の少なくとも１流路を遮断する仕切板からなり、前記筐体の内側面には、前記仕切板の表裏両側を挟持して前記筐体内部の設置位置へ案内する表裏一対の案内片が設けられているとともに、前記案内片が上下に少なくとも２分割されており、うち上部における表裏一対の案内片が上開きテーパ状に形成され、下部における表裏一対の案内片がほぼ平行に設けられ、該案内片の上端部が上方に拡開された切欠き部に形成されていることを特徴としている。
この特徴によれば、挿入手段により仕切体が切断面間に設置される場合において、仕切体が下降動作する際に、案内片により仕切板が案内され、所定の設置位置に導かれるため、管内の水圧等の影響下においても、仕切体の設置作業が容易となる。 In order to solve the above-mentioned problem, the continuous fluid flow path forming device for an existing fluid pipe according to claim 1 of the present invention seals the outer peripheral surface of the existing fluid pipe with a casing capable of securing at least three-direction flow paths. A continuous water flow path forming device for an existing fluid pipe that cuts the existing fluid pipe in a continuous water state, and installs a partition body to form another flow path by an insertion means installed inside the housing,
The partition includes a partition plate that blocks at least one flow path of the fluid in the housing, and guides to the installation position inside the housing by sandwiching both front and back sides of the partition plate on the inner surface of the housing. A pair of front and back guide pieces are provided, and the guide pieces are divided into at least two parts in the vertical direction, and the pair of front and back guide pieces in the upper part is formed in an upwardly opening tapered shape, and the pair of front and back guide pieces in the lower part. Are provided substantially in parallel, and the upper end portion of the guide piece is formed in a notch portion that is expanded upward .
According to this feature, when the partition is installed between the cut surfaces by the insertion means, the partition plate is guided by the guide piece and guided to a predetermined installation position when the partition is lowered, so that Even under the influence of water pressure or the like, the installation work of the partition becomes easy.

また、挿入手段により仕切体が切断面間に設置される場合において、仕切体が下降動作する際に、表裏一対の案内片により仕切板の表裏両側から案内されるため、仕切体を設置位置から外れることなく設置することができる。 In addition, when the partition body is installed between the cutting surfaces by the insertion means, when the partition body is lowered, the partition body is guided from both the front and back sides of the partition plate by the pair of front and back guide pieces. It can be installed without detachment.

また、仕切体を切断面間に設置するとき、仕切体の挿入初期は、上部における上開きテーパ状の案内片により挿入作業が容易であり、仕切体は表裏一対の案内片により位置を修正されながら、設置後は所定の設置位置に正確に導かれる。 Also, when installing the partition body between the cut surfaces, the insertion operation of the partition body is easy with the upper opening tapered guide piece at the top, and the position of the partition body is corrected by the pair of front and back guide pieces. However, after installation, it is accurately guided to a predetermined installation position.

また、仕切体は、互いにほぼ平行に形成される下部における表裏一対の案内片により、仕切体の表裏両側から案内されるため、設置位置に正確に設置され、また傾くことなく設置される。 In addition, the partition body is guided from both the front and back sides of the partition body by a pair of front and back guide pieces formed in a lower part substantially parallel to each other , so that the partition body is accurately installed at an installation position and is not inclined.

更に、仕切板が下降動作により、上部における表裏一対の案内片の間から、下部における表裏一対の案内片に向けて移動するときに、仕切板の下端部が下部における案内片の上端部に突接することなく、設置位置に正確に設置され、また傾くことなく設置される。 Further, when the partition plate is moved downward from the pair of front and back guide pieces to the pair of front and back guide pieces in the lower portion, the lower end portion of the partition plate projects into the upper end portion of the guide piece in the lower portion. It is installed accurately at the installation position without touching, and installed without tilting.

本発明の実施例を以下に説明する。 Examples of the present invention will be described below.

本発明の実施例を図面に基づいて説明すると、先ず図1は、本発明の第１実施形態における既設水道管１に不断水流路形成装置を装着し新設水道管３を連通接続した配管の全体像を示す平面図である。（ａ）は、不断水流路形成装置を既設水道管１に装着し、新設水道管３を連通接続した状態及び管内流体の流下方向を示した平面図であり、（ｂ）は、不断水流路形成装置内部の既設水道管１を切断した状態及び管内流体の流下方向を示した平面図であり、（ｃ）は、既設水道管１を切断した後に、不断水流路形成装置内部に仕切体４を設置した状態及び管内流体の流下方向を示した平面図である。図２（ａ）は、本発明における仕切体４を示す斜視図であり、（ｂ）は不断水流路形成装置の全体像を示す斜視図である。図３は、不断水流路形成装置の全体を示す平面図である。図４は、筐体の内側面及び内底面に一体的に連続して備えられた段部を示した、不断水流路形成装置の筐体のｆ−ｆ断面図である。図５（ａ）は、仕切体４が、筐体の上方から設置位置に向けて下降動作する途中地点における、不断水流路形成装置の筐体の縦断面図であり、（ｂ）は仕切体４が、設置位置に設置された地点における、不断水流路形成装置の筐体の縦断面図である。図６は、上下２分割の上部筐体１１、下部筐体１２を溶接加工にて接合する突合せ部を示した図３のａ−ａ及びｃ−ｃの拡大断面図であり、（ａ）は溶接加工前の突合せ部を示した拡大断面図であり、（ｂ）は溶接加工後の突合せ部を示した拡大断面図であり、（ｃ）研磨加工後の突合せ部を示した拡大断面図である。図７は、仕切体４を筐体内側面の設置位置に案内する案内片を示した図であり、（ａ）は筐体内の案内片を示した平面図であり、（ｂ）は（ａ）におけるｄ−ｄ断面図であり、（ｃ）は（ａ）におけるｃ−ｃ断面図である。図８は、仕切体４の筐体内側面の設置位置における振れ止めピン２２を示した側断面図である。図９は、不断水流路形成装置２内部の管を切断する穿孔用カッタを示した概略図である。図１０は、不断水流路形成装置２内部に仕切体４を設置する挿入機を示した概略図である。図１１は、仕切体４が不断水流路形成装置２内部に設置された状態における図５（ｂ）のｅ−ｅ断面図である。図１２は、仕切体４を筐体内側面の設置位置に案内する案内片の変形例を示した図である。 An embodiment of the present invention will be described with reference to the drawings. First, FIG. 1 shows the entire piping in which a continuous water flow path forming device is attached to an existing water pipe 1 in the first embodiment of the present invention and a new water pipe 3 is connected in communication. It is a top view which shows an image. (A) is a plan view showing a state in which the continuous water channel forming device is attached to the existing water pipe 1 and the new water pipe 3 is connected in communication and the flow direction of the fluid in the pipe, and (b) is a continuous water channel. It is the top view which showed the state which cut | disconnected the existing water pipe 1 inside a formation apparatus, and the flow direction of the fluid in a pipe | tube, (c) is the partition 4 in an unrestricted water flow path formation apparatus, after cutting the existing water pipe 1 It is the top view which showed the state which installed and the flow direction of the fluid in a pipe | tube. Fig.2 (a) is a perspective view which shows the partition body 4 in this invention, (b) is a perspective view which shows the whole image of a continuous water flow path formation apparatus. FIG. 3 is a plan view showing the entire continuous water flow path forming apparatus. FIG. 4 is an ff cross-sectional view of the casing of the continuous water flow path forming device, showing stepped portions provided integrally and continuously on the inner side surface and the inner bottom surface of the casing. Fig.5 (a) is a longitudinal cross-sectional view of the housing | casing of a continuous water flow path formation apparatus in the middle point in which the partition body 4 descend | falls toward the installation position from the upper direction of a housing | casing, (b) is a partition body 4 is a longitudinal cross-sectional view of the casing of the continuous water flow path forming device at a point installed at the installation position. 6 is an enlarged cross-sectional view of aa and cc of FIG. 3 showing a butting portion that joins the upper housing 11 and the lower housing 12 which are divided into upper and lower parts by welding. It is the expanded sectional view which showed the butt | matching part before welding processing, (b) is the expanded sectional view which showed the butt | matching part after welding processing, (c) It is an expanded sectional view which showed the butt | matching part after grinding processing is there. FIG. 7 is a view showing a guide piece for guiding the partition 4 to the installation position on the inner side surface of the housing, (a) is a plan view showing the guide piece in the housing, and (b) is (a). It is a dd sectional view in (a), and (c) is cc sectional view in (a). FIG. 8 is a side cross-sectional view showing the steady pin 22 at the installation position on the inner side surface of the housing of the partition 4. FIG. 9 is a schematic view showing a piercing cutter for cutting a pipe inside the continuous water flow path forming device 2. FIG. 10 is a schematic view showing an insertion machine for installing the partition body 4 inside the continuous water flow path forming device 2. FIG. 11 is a cross-sectional view taken along the line ee of FIG. 5B in a state where the partition 4 is installed inside the continuous water flow path forming device 2. FIG. 12 is a view showing a modification of the guide piece that guides the partition body 4 to the installation position on the inner side surface of the housing.

本発明の第１実施形態おける不断水流路形成装置２について装着後の配管状況は、図1（ａ）に示すように、上水管である既設水道管１の管内流体の流下方向に対して、例えば既設水道管１の一部に撤去や補修が必要な特定エリアＥを挟んだ上流側と下流側の２箇所の管部分に、本発明の第１実施形態における筐体１０からなる不断水流路形成装置２を既設水道管１の外周面に水密的に装着し、２箇所の不断水流路形成装置２を連通接続する新設水道管３を配設した後、筐体１０内部の既設水道管１部分を切断（図１（ｂ））して切断箇所に仕切体４を装着し、図１（ｃ）に示すように、既設水道管１の既設流路を迂回させる構成を有している。 As shown in FIG. 1 (a), the piping situation after installation of the continuous water flow path forming device 2 in the first embodiment of the present invention is as follows, with respect to the flow direction of the fluid in the pipe of the existing water pipe 1 that is a water pipe. For example, a continuous water flow path comprising the casing 10 in the first embodiment of the present invention is provided at two upstream and downstream pipe portions sandwiching a specific area E that needs to be removed or repaired in a part of the existing water pipe 1. The forming apparatus 2 is water-tightly attached to the outer peripheral surface of the existing water pipe 1 and the new water pipe 3 that connects the two continuous water flow path forming apparatuses 2 in communication is disposed, and then the existing water pipe 1 inside the housing 10 is disposed. A part is cut | disconnected (FIG.1 (b)), the partition body 4 is mounted | worn with a cutting | disconnection location, and it has the structure which detours the existing flow path of the existing water pipe 1, as shown in FIG.1 (c).

このような不断水流路形成装置２及び新設水道管３の配設による迂回路の新設により、既設水道管１の特定エリアＥには管内流体が流下せず迂回するため、特定エリアＥに位置する管部分の撤去やあるいは補修等の作業が可能となる。 Due to the new installation of the detour route by the arrangement of the continuous water flow path forming device 2 and the newly installed water pipe 3, the fluid in the pipe does not flow down to the specific area E of the existing water pipe 1, so that it is located in the specific area E. Work such as removal or repair of the pipe part becomes possible.

本発明の第１実施形態おける不断水流路形成装置２の外形は、図２及び図８に示すように、既設水道管の流路を変更する仕切体４と筐体１０とからなり、筐体１０は上部筐体１１と下部筐体１２とからなる上下２部分に分割可能となっている。筐体１０は、既設水道管１の外径よりも大なる内径を有する円筒形からなっており、上面に上向きに開口した円形の上方開口部Ｕが形成され、側面にも水平方向に開口した円形の側方開口部Ａ、Ａ’、Ｂが３箇所形成されている。 As shown in FIGS. 2 and 8, the outer shape of the continuous water flow path forming device 2 in the first embodiment of the present invention is composed of a partition 4 that changes the flow path of an existing water pipe and a housing 10. 10 can be divided into two upper and lower parts composed of an upper housing 11 and a lower housing 12. The casing 10 is formed in a cylindrical shape having an inner diameter larger than the outer diameter of the existing water pipe 1. A circular upper opening U that opens upward is formed on the upper surface, and a horizontal opening is also formed on the side surface. Three circular side openings A, A ′ and B are formed.

図２及び図３に示すように、側方開口部Ａ、Ａ’、Ｂのうち、水平方向の同一の中心軸Ｃを有し、筐体１０の側面において互いの対面に位置する側方開口部Ａ及び側方開口部Ａ’の内径は、既設水道管１の外径よりもほぼ同一あるいは若干大きく形成されており、これら側方開口部Ａ、Ａ’の両端部近傍における内面には水密的なシール材８ｃが備えられている。また、側方開口部Ｂの中心軸Ｄは、中心軸Ｃとほぼ直交する水平方向に形成されている。 As shown in FIGS. 2 and 3, of the side openings A, A ′ and B, the side openings having the same central axis C in the horizontal direction and located opposite to each other on the side surface of the housing 10. The inner diameters of the portion A and the side opening A ′ are formed to be substantially the same or slightly larger than the outer diameter of the existing water pipe 1, and the inner surfaces of the side openings A and A ′ in the vicinity of both ends are watertight. A typical sealing material 8c is provided. Further, the central axis D of the side opening B is formed in a horizontal direction substantially orthogonal to the central axis C.

また、上部筐体１１、下部筐体１２の外側面及び筐体１２の外底面には、補強用のリブ１４が設けられており、筐体１２の底面には、筐体１０の内部に設置された仕切体４を表裏側から挟む２箇所に、それぞれ開閉可能な排水口１３が設けられている。 Reinforcing ribs 14 are provided on the outer surface of the upper housing 11 and the lower housing 12 and on the outer bottom surface of the housing 12, and the bottom surface of the housing 12 is installed inside the housing 10. Drainage ports 13 that can be opened and closed are provided at two locations sandwiching the partition 4 from the front and back sides.

不断水流路形成装置２の既設水道管１への装着について図２（ｂ）で示して説明すると、上部筐体１１及び下部筐体１２を、それぞれ既設水道管１の上方及び下方から、中心軸Ｃと既設水道管１の中心軸とを合わせる位置で、既設水道管１の外周部に装着する。既設水道管１の外周部に装着した上部筐体１１及び上部筐体１２の突合せ部は、溶接用の開先部１８が形成されており、図６を用いて後述するように、上部筐体１１、下部筐体１２の外側面からの溶接加工により、上部筐体１１及び下部筐体１２の接合を行う。また、開口部Ａ及び開口部Ａ’において、シール材８ｃを、筐体１０側のフランジ１７と分割構造の押し輪１７’との間に挟み込むことにより、筐体１０と既設水道管１の外周面との接合を行う。 The attachment of the continuous water flow path forming device 2 to the existing water pipe 1 will be described with reference to FIG. 2B. The upper housing 11 and the lower housing 12 are respectively connected to the central axis from above and below the existing water pipe 1. At the position where C and the central axis of the existing water pipe 1 are aligned, the outer peripheral part of the existing water pipe 1 is attached. A butt portion of the upper casing 11 and the upper casing 12 mounted on the outer peripheral portion of the existing water pipe 1 is formed with a groove portion 18 for welding. As will be described later with reference to FIG. 11. The upper casing 11 and the lower casing 12 are joined by welding from the outer surface of the lower casing 12. Moreover, the outer periphery of the housing | casing 10 and the existing water pipe 1 is inserted in the opening part A and opening part A 'between the flange 17 by the side of the housing | casing 10, and the pushing ring | wheel 17' of a division structure in the opening part A '. Join the surface.

溶接加工による上部筐体１１及び下部筐体１２の接合と、開口部Ａ及び開口部Ａ’の両端部と既設水道管１の外周面との接合により、筐体１０の内部は水密的となっている。 The interior of the housing 10 becomes watertight by joining the upper housing 11 and the lower housing 12 by welding and joining the opening A and both ends of the opening A ′ and the outer peripheral surface of the existing water pipe 1. ing.

ここで、本実施例では図１に示して上述したように、既設水道管１の特定エリアＥを挟んだ上流部及び下流部の２箇所において、不断水流路形成装置２の装着を行った後、それぞれの開口部Ｂに水密的に連通接続した新設水道管３を配設する。これにより図１（ａ）に示すように、特定エリアＥを挟んだ上流部及び下流部の不断水流路形成装置２及び新設水道管３の内空間は、一体的に連通接続された閉空間であり、かつ水密的となる。 Here, in the present embodiment, as shown in FIG. 1 and described above, after the continuous water flow path forming device 2 is mounted at two locations, the upstream portion and the downstream portion across the specific area E of the existing water pipe 1. A new water pipe 3 connected in a watertight manner to each opening B is disposed. As a result, as shown in FIG. 1 (a), the internal space of the continuous water flow path forming device 2 and the newly installed water pipe 3 in the upstream portion and the downstream portion sandwiching the specific area E is a closed space integrally connected. Yes and watertight.

次に、図９、図１０を用いて作業工程を説明すると、上流側に配設された不断水流路形成装置２において、上方開口部Ｕに、上方開口部Ｕを開閉自在とし、閉状態においては不断水流路形成装置２内部の水密性を保持できる開閉弁３０が配設され、配設後の開閉弁３０は閉状態としておく。続いて、既設水道管１の外径よりも大なる内径及び高さを有し、下端周縁に下向きに配設された穿孔刃３２ａと、穿孔刃３２ａと同じ中心軸を有し穿孔刃３２ａよりも下方の位置に下向きに配設されたセンタードリル３２ｂと、センタードリル３２ｂの先方に設けられた掛止片３２ｃとを有する内空円筒状の穿孔用カッタ３２を、胴体３１内部空間に設け、円筒状の穿孔用カッタ３２の中心軸がほぼ鉛直方向を向き、かつ筐体１０内の既設水道管１の中心軸とほぼ直交方向に交差する位置に配設するように、胴体３１を開閉弁３０の上方に水密的に連通接続する。 Next, the work process will be described with reference to FIGS. 9 and 10. In the continuous water flow path forming device 2 disposed on the upstream side, the upper opening U can be opened and closed at the upper opening U, and in the closed state. Is provided with an on-off valve 30 that can maintain the water tightness inside the continuous water flow path forming device 2, and the on-off valve 30 after the arrangement is kept closed. Subsequently, a perforation blade 32a having an inner diameter and a height larger than the outer diameter of the existing water pipe 1 and disposed downward on the peripheral edge of the lower end, and having the same central axis as the perforation blade 32a, from the perforation blade 32a An inner hollow cylindrical drilling cutter 32 having a center drill 32b disposed downward at a lower position and a hook 32c provided at the front of the center drill 32b is provided in the inner space of the body 31. The body 31 is opened and closed so that the central axis of the cylindrical piercing cutter 32 is substantially vertically oriented and intersects the central axis of the existing water pipe 1 in the housing 10 in a direction substantially perpendicular to the central axis. A watertight communication connection is made above 30.

次に、開閉弁３０を開状態とし、穿孔用カッタ３２を回転動作させながら、穿孔刃３２ａが、既設水道管１の全断面を通過するように進退移動させるストローク３３により、穿孔用カッタ３２を下降動作させる。穿孔用カッタ３２の回転動作及び下降動作により、既設水道管１は穿孔用カッタ３２の下端周縁の直径寸法分離間した２箇所の切断面で、既設水道管１上面の外周面から下方に徐々に切断され、穿孔刃３２ａが既設水道管１の全断面を通過するように下降動作した地点で、２箇所の切断面で既設水道管１が切断され、２箇所の切断面の間の既設水道管片１’が既設水道管１の管路から分断される。 Next, the punching cutter 32 is moved by the stroke 33 that the punching blade 32a moves forward and backward so as to pass through the entire cross section of the existing water pipe 1 while the on-off valve 30 is opened and the drilling cutter 32 is rotated. Move down. By rotating and lowering the drilling cutter 32, the existing water pipe 1 is gradually cut downward from the outer peripheral surface of the upper surface of the existing water pipe 1 at the two cut surfaces between the diameters of the bottom edge of the drilling cutter 32. The existing water pipe 1 is cut at two cut surfaces at a point where the perforated blade 32a is lowered so as to pass through the entire cross section of the existing water pipe 1, and the existing water pipe between the two cut surfaces is cut. The piece 1 ′ is cut off from the existing water pipe 1.

上述の既設水道管１の切断動作において、既設水道管１は不断水状態であるため、既設水道管１内は水圧が加わった満水状態であり、穿孔用カッタ３２による切断動作において、センタードリル３２ｂが既設水道管１上面の外周面から既設水道管１の内部に達した時点で、既設水道管１の内部の流体が管外に漏出し、筐体１０の内空間及び上方に連通接続した胴体３１内部を満たして、さらに側方開口部Ｂに連通接続した新設水道管３の内部及び下流側に装着した不断水流路形成装置２の内空間を満たすようになる。ただし、図１（ａ）に示すように、２箇所の不断水流路形成装置２及び新設水道管３は水密的に連通接続されているため、既設水道管１の内部から漏出した流体が、不断水流路形成装置２及び新設水道管３の外部に漏出することはない。したがって、既設水道管１内の流体を不断水状態のまま、切断動作が可能となる。また、この切断動作は、図９で示される排水口１３を開口し、既設水道管１の切断時に発生する切り粉を外部に排出させながら行われる。 In the above-described cutting operation of the existing water pipe 1, the existing water pipe 1 is in an undisrupted water state, and therefore, the existing water pipe 1 is filled with water pressure, and in the cutting operation by the drilling cutter 32, the center drill 32 b When the fluid reaches the inside of the existing water pipe 1 from the outer peripheral surface of the upper surface of the existing water pipe 1, the fluid inside the existing water pipe 1 leaks out of the pipe, and the fuselage is connected to the inner space and the upper side of the housing 10. The inside of the new water pipe 3 that is connected to the side opening B and the inner space of the continuous water flow path forming device 2 that is mounted on the downstream side is filled. However, as shown in FIG. 1 (a), the two continuous water flow path forming devices 2 and the new water pipe 3 are connected in a watertight manner, so that the fluid leaking from the existing water pipe 1 is constantly It does not leak out of the water flow path forming device 2 and the new water pipe 3. Therefore, the cutting operation can be performed while the fluid in the existing water pipe 1 remains in an undisrupted state. Further, this cutting operation is performed while opening the drain port 13 shown in FIG. 9 and discharging the chips generated when the existing water pipe 1 is cut to the outside.

上流側の不断水流路形成装置２において、既設水道管１の切断動作後に、胴体３１の内部に配設した穿孔用カッタ３２と、センタードリル３２ｂの掛止片３２ｃに掛止した切断後の既設水道管片１’とを外部に搬出する。 In the upstream continuous water flow path forming device 2, after the cutting operation of the existing water pipe 1, the cutting cutter 32 disposed inside the fuselage 31 and the existing cut-off device hooked on the hooking piece 32 c of the center drill 32 b. The water pipe piece 1 'is carried out to the outside.

次に、下流側に配設した方の不断水流路形成装置２においても同様に、開閉弁３０の上方に同じ仕様の胴体３１の内部に配設された穿孔用カッタ３２の上述と同様の動作により、既設水道管１を切断し、穿孔用カッタ３２と既設水道管片１’とを外部に搬出する。 Next, also in the continuous water flow path forming device 2 disposed on the downstream side, the same operation as described above of the punching cutter 32 disposed in the body 31 having the same specifications above the on-off valve 30 is performed. Thus, the existing water pipe 1 is cut and the perforating cutter 32 and the existing water pipe piece 1 'are carried out to the outside.

この上流側及び下流側に配設した不断水流路形成装置２における、既設水道管１の切断及び既設水道管片１’の搬出動作の終了時点において、流体管の配管経路は図１（ｂ）に示すようになり、流体管内の流体の流下経路は、切断動作前と同様に既設水道管１内を流下する経路と、上流側の不断水流路形成装置２において流下流体が迂回して、新設水道管３内を流下し、下流側の不断水流路形成装置２において再び既設水道管１内に合流して流下する経路とが、併存する状態となる。 At the end of the operation of cutting the existing water pipe 1 and carrying out the existing water pipe piece 1 'in the continuous water flow path forming device 2 arranged on the upstream side and the downstream side, the piping path of the fluid pipe is as shown in FIG. The flow path of the fluid in the fluid pipe is the same as that before the cutting operation, and the downstream flow is bypassed in the upstream water flow path forming device 2 by the path flowing down in the existing water pipe 1. A flow that flows down in the water pipe 3 and joins and flows back into the existing water pipe 1 in the downstream continuous water flow path forming device 2 becomes a coexisting state.

続いて、下流側の不断水流路形成装置２の内部において、既設水道管１を切断時に既設水道管１の切断面から発生し、排水口１３から排出されずに筐体１０内に残存した切り粉を、図示しない排出装置により上方開口部Ｕから排出する。 Subsequently, inside the continuous water flow path forming device 2 on the downstream side, the cut generated in the cut surface of the existing water pipe 1 when cutting the existing water pipe 1 and remaining in the housing 10 without being discharged from the drain port 13. The powder is discharged from the upper opening U by a discharge device (not shown).

次に、既設水道管片１’及び切り粉を排出した後の下流側の不断水流路形成装置２において、図１０に示すように、仕切体４と挿入機３４を内部に配設した胴体３１’を開閉弁３０に水密的に連通接続した後、開閉弁３０を開状態として仕切体４を挿入機３４により上方から下方に向かって押圧する。 Next, in the existing water pipe forming apparatus 2 on the downstream side after discharging the existing water pipe piece 1 ′ and the chips, as shown in FIG. 10, the body 31 in which the partition body 4 and the insertion machine 34 are disposed. After 'is connected to the on-off valve 30 in a watertight manner, the on-off valve 30 is opened, and the partition body 4 is pressed by the insertion machine 34 from above to below.

ここで、仕切体４は図２（ａ）で示すように、既設水道管１の内部の流体の流路を切替える鉛直方向に備えられる仕切板６と、仕切板６の上端部と一体的に連接される水平方向に備えられる円形の上蓋部５とからなり、上蓋部５の周面に設けられたシール材８ａが、筐体１０の内側面に設けられた段部１９と水密的に圧接するように形成されている。同様に、仕切板６の両側面に備えられたシール材８１ｂ及び底面に備えられたシール材８２ｂとからなるシール材８ｂが、仕切体４の設置位置において、筐体１０の内側面に設けられた側面段部１５、底面段部１６と水密的に圧接するように形成されている。 Here, as shown in FIG. 2A, the partition 4 is integrally formed with a partition plate 6 provided in a vertical direction for switching a fluid flow path inside the existing water pipe 1 and an upper end portion of the partition plate 6. A sealing material 8a provided on the peripheral surface of the upper lid 5 is press-contacted with a step 19 provided on the inner surface of the housing 10 in a watertight manner. It is formed to do. Similarly, a sealing material 8b including a sealing material 81b provided on both side surfaces of the partition plate 6 and a sealing material 82b provided on the bottom surface is provided on the inner side surface of the housing 10 at the installation position of the partition body 4. The side surface step portion 15 and the bottom surface step portion 16 are formed in watertight pressure contact.

図１０に示すように、仕切体４は、挿入機３４により下方に押圧され、図５（ｂ）で示す筐体１０の内部に設置されると、開口部Ａの上流側から流下する流体が仕切体４により流路を水平方向にほぼ直交に変更され、開口部Ｂから下流側に流出するように形成されている。また流下流体に面する流路切替面７は、筐体１０の内部に設置後の位置において、管内の流体が上流から下流に向かう流下方向に向い湾曲する凹部を有する凹曲面が形成されているため、管内を流下する流体の流れに乱れが生じにくい。したがって、仕切体４に対する流下流体の乱れによる負荷が小さく、仕切体４のシール性の保持を長期間維持できる。 As shown in FIG. 10, when the partition body 4 is pressed downward by the insertion machine 34 and installed inside the housing 10 shown in FIG. 5B, the fluid flowing down from the upstream side of the opening A is flown. The flow path is changed substantially orthogonal to the horizontal direction by the partition 4 and is formed so as to flow out from the opening B to the downstream side. In addition, the flow path switching surface 7 facing the falling fluid is formed with a concave curved surface having a concave portion that is curved toward the downstream direction in which the fluid in the pipe flows from upstream to downstream at a position after being installed in the housing 10. For this reason, the flow of the fluid flowing down in the pipe is hardly disturbed. Therefore, the load due to the turbulence of the flowing fluid to the partition 4 is small, and the sealing performance of the partition 4 can be maintained for a long time.

次に、上流側の不断水流路形成装置２においても同様に、既設水道管片１’及び切り粉を排出した後に、不断水流路形成装置２の内部に仕切体４を配設する。 Next, in the upstream continuous water flow path forming apparatus 2, similarly, after discharging the existing water pipe piece 1 ′ and chips, the partition body 4 is disposed inside the continuous water flow path forming apparatus 2.

この上流側及び下流側の不断水流路形成装置２に仕切体４を配設した時点において、水道管の配管経路は図１（ｃ）に示すようになり、既設水道管１内の流体の流下経路は、上流側の不断水流路形成装置２において流下流体が迂回して、新設水道管３内を流下し、下流側の不断水流路形成装置２において既設水道管１内に戻り流下する状態となる。したがって、既設の流下経路である特定エリアＥの管内には、流体が流下しない状態となるため、特定エリアＥに位置する管部分の撤去やあるいは補修等の作業が可能となる。 When the partition body 4 is disposed in the upstream and downstream continuous water flow path forming devices 2, the pipe path of the water pipe is as shown in FIG. 1 (c), and the flow of fluid in the existing water pipe 1 The path is such that the flowing-down fluid bypasses in the upstream continuous water flow path forming device 2, flows down in the new water pipe 3, and flows back into the existing water pipe 1 in the downstream continuous water flow path forming apparatus 2. Become. Accordingly, since the fluid does not flow down into the pipe of the specific area E that is the existing flow path, it is possible to remove or repair the pipe portion located in the specific area E.

次に、不断水流路形成装置２の各部について、詳細に説明する。 Next, each part of the continuous water flow path forming device 2 will be described in detail.

仕切体４の設置位置における不断水流路形成装置２において、図４で示すように、仕切板６の底面との当接面が、若干高い段部に形成されており、穿孔用カッタ３２により既設水道管１を切断する際に、既設水道管１の切断面から発生して落下し、底面段部１６の当接面に付着する切り粉が、既設水道管１の内部における流下水流あるいは円筒状の穿孔用カッタ３２の回転動作により発生する乱水流により、筐体１０の内底面近傍を不規則的に揺動し、底面段部１６の当接面から落下するようになるため、仕切体４の設置の際において、仕切板６の底面に備えられたシール材８２ｂが、切り粉をはさみ込むことなく底面段部１６に押圧され、シール性能を高めることができる。図１１（ａ）で示されるように、底面段部１６の上面の幅寸法が、シール材８２ｂの幅寸法に対応するために必要なだけの狭い寸法に抑えられているために、底面段部１６の上面に切り粉が付着しづらくなる。 In the continuous water flow path forming device 2 at the installation position of the partition body 4, as shown in FIG. 4, the contact surface with the bottom surface of the partition plate 6 is formed at a slightly higher step, and is already installed by the perforating cutter 32. When cutting the water pipe 1, the chips generated and dropped from the cut surface of the existing water pipe 1 and adhering to the contact surface of the bottom surface step portion 16 flow down in the existing water pipe 1 or in a cylindrical shape. Due to the turbulent water flow generated by the rotating operation of the perforating cutter 32, the vicinity of the inner bottom surface of the housing 10 is irregularly swung and falls from the contact surface of the bottom stepped portion 16. When installing the sealing member 82, the sealing material 82b provided on the bottom surface of the partition plate 6 is pressed against the bottom surface step portion 16 without pinching the chips, so that the sealing performance can be improved. As shown in FIG. 11 (a), the width of the upper surface of the bottom step 16 is suppressed to a narrow size necessary to accommodate the width of the sealing material 82b. It becomes difficult for chips to adhere to the upper surface of 16.

また、図５（ａ）で示すように、仕切板６の両側面及び底面に一体的に凸Ｒ面で連接したシール材８１ｂ及び８２ｂとからなるシール材８ｂが備えられており、筐体１０の内面においても側面段部１５と底面段部１６が一体的に凹Ｒ面で連続するように形成されている。 Further, as shown in FIG. 5A, a sealing material 8b including sealing materials 81b and 82b integrally connected to both side surfaces and a bottom surface of the partition plate 6 by a convex R surface is provided. Also on the inner surface, the side surface step portion 15 and the bottom surface step portion 16 are integrally formed to be continuous with a concave R surface.

これにより、図５（ｂ）で示すように、仕切体４を筐体１０内部に設置した位置において、仕切板４の両下端角部と筐体１０底面段部１６の両端部との当接面が、互いに対応するＲ面で合致するため、仕切体４を筐体１０内部に設置する際に底面のシール材８２ｂにかかる荷重を徐々に両側面のシール材８１ｂにも負担させることが可能となり、底面のシール材８２ｂの横方向への変形を防止でき、当接面におけるシール効果を維持することができる。 As a result, as shown in FIG. 5B, the lower end corners of the partition plate 4 and the both ends of the bottom step 16 of the casing 10 abut at the position where the partition 4 is installed inside the casing 10. Since the surfaces coincide with each other on the corresponding R surfaces, it is possible to gradually load the load applied to the bottom sealing material 82b to both side sealing materials 81b when the partition 4 is installed inside the housing 10. Thus, the lateral deformation of the sealing material 82b on the bottom surface can be prevented, and the sealing effect on the contact surface can be maintained.

また図５（ａ）に示すように、仕切板６が上部から下部に至るにしたがって幅狭のテーパ状であり、筐体１０の内側面が、仕切板６の幅寸法の変化に対応するように、筐体１０内部の側面段部１５が、上部から下部に至るにしたがって幅狭になるように形成されている。 Further, as shown in FIG. 5A, the partition plate 6 has a narrow taper shape from the upper part to the lower part, and the inner side surface of the housing 10 corresponds to the change in the width dimension of the partition plate 6. Further, the side step 15 inside the housing 10 is formed so as to become narrower from the top to the bottom.

したがって、図５（ａ）で示すように、仕切体４を設置する場合において、仕切体４の下降動作中は、仕切板６の両側面に備えたシール材８１ｂが、筐体１０の内側面との摺接により圧縮することがほとんどなく、設置位置において、仕切板６の両側面及び底面に備えたシール材８ｂがほぼ同時に筐体１０の内面に当接するため、シール材８ｂの変形による流体漏洩を防止できる。 Therefore, as shown in FIG. 5A, when the partition body 4 is installed, the sealing material 81 b provided on both side surfaces of the partition plate 6 serves as the inner surface of the housing 10 during the lowering operation of the partition body 4. Since the sealing material 8b provided on both side surfaces and the bottom surface of the partition plate 6 abuts the inner surface of the housing 10 almost simultaneously at the installation position, the fluid due to the deformation of the sealing material 8b Leakage can be prevented.

また、仕切体４が筐体１０内部に設置された場合において、仕切板６の両側面及び底面に備えたシール材８ｂと筐体１０の内面とが当接した後、下向き押力を受けた仕切板６の底面のシール材８２ｂにかかる荷重を、底面両端部のＲ面を介して徐々に両側面のシール材８１ｂにも負担させることが可能となるため、底面のシール材８２ｂの横方向の変形を防止でき、当接面におけるシール効果を維持できる。 Further, when the partition body 4 is installed inside the housing 10, the seal material 8 b provided on both side surfaces and the bottom surface of the partition plate 6 contacts the inner surface of the housing 10, and then receives a downward pressing force. Since the load applied to the sealing material 82b on the bottom surface of the partition plate 6 can be gradually applied to the sealing material 81b on both side surfaces via the R surfaces at both ends of the bottom surface, the lateral direction of the sealing material 82b on the bottom surface Can be prevented, and the sealing effect on the contact surface can be maintained.

また、仕切板６の両側面が、正面視上開きテーパ状となっているため、仕切体４の筐体１０内における設置位置において、仕切体４の自重が、仕切板６の底面のシール材８２ｂのみならず、両側面に備えたシール材８１ｂにも均等に押圧力が加わり、底面のシール材８２ｂの変形を抑えることができるため、よりシール効果を増すことができる。 In addition, since both side surfaces of the partition plate 6 are tapered in front view, the weight of the partition body 4 is the sealing material on the bottom surface of the partition plate 6 at the installation position in the housing 10 of the partition body 4. Since the pressing force is evenly applied not only to 82b but also to the sealing material 81b provided on both side surfaces and deformation of the bottom sealing material 82b can be suppressed, the sealing effect can be further increased.

また、図４で示すように、仕切板６の筐体１０の内側面における当接面が、その他の内側面よりも、若干内向き側に肉厚の段部として形成されていることにより、筐体１０の内面を前記したシール材８ｂの当接面とするものと比べ、側面段部１５の加工形成のみで、仕切板６の両側面と当接する当接面を確保できるので、加工形成が簡便でありまた安価である。 Further, as shown in FIG. 4, the contact surface on the inner surface of the housing 10 of the partition plate 6 is formed as a thick stepped portion slightly inward from the other inner surfaces, Compared with the case in which the inner surface of the housing 10 is used as the contact surface of the sealing material 8b described above, the contact surface that contacts the both side surfaces of the partition plate 6 can be secured only by processing the side surface step portion 15, so that the process formation is performed. Is simple and inexpensive.

また、図４で示すように、筐体１０の内側面及び内底面における、仕切板６との当接面が筐体１０の内部側に側面段部１５、底面段部１６を形成しているため、既設水道管１の外周面より大なる筐体１０の内部において、仕切体４の寸法形状を小さく抑えることができ、仕切体４の設置の作業手間を抑えることができる。 Further, as shown in FIG. 4, the contact surfaces of the inner surface and the inner bottom surface of the housing 10 with the partition plate 6 form side step portions 15 and a bottom step portion 16 on the inner side of the housing 10. For this reason, the size and shape of the partition 4 can be kept small inside the housing 10 larger than the outer peripheral surface of the existing water pipe 1, and the labor for installing the partition 4 can be reduced.

また、図４に示すように、本発明の不断水流路形成装置２は、ほぼ中央の高さで上下２分割する構造となっており、分割構造である筐体１０の接合方法について以下に説明する。筐体１０は、上部筐体１１と下部筐体１２とを外側面側からの溶接加工により接合する構造となっており、図６（ａ）に示すように、上部筐体１１と下部筐体１２との突合せ部には外側面に開先部１８を有している。 Moreover, as shown in FIG. 4, the continuous water flow path forming device 2 of the present invention has a structure that is divided into two vertically at a substantially central height, and a method for joining the casing 10 having a divided structure will be described below. To do. The housing 10 has a structure in which the upper housing 11 and the lower housing 12 are joined by welding from the outer surface side, and as shown in FIG. 12 has a groove portion 18 on the outer surface.

図６（ｂ）に示すように、外側面からの溶接加工により、筐体１０の内側面において、溶融凝固した溶接材料の一部が肉盛り部として形成される。そこで、前述のシール効果を維持する目的で、筐体１０の内側面における仕切板６との当接面を平滑にするために、当該肉盛り部のうち仕切板６との当接箇所（研磨箇所Ｋ）を、研磨加工による表面処理を施す。 As shown in FIG. 6B, a part of the melted and solidified welding material is formed as a build-up portion on the inner side surface of the housing 10 by welding from the outer side surface. Therefore, in order to maintain the above-described sealing effect, in order to smooth the contact surface with the partition plate 6 on the inner side surface of the housing 10, the contact portion with the partition plate 6 (polishing) of the built-up portion. The surface K is subjected to surface treatment by polishing.

従来の溶接加工による接合の場合、筐体内部に側面段部を有さないために、仕切板と筐体の内側面との当接箇所が位置特定できずに、研磨箇所を限定できない。したがって、予め広い面を研磨加工しなければならない問題があるばかりか、研磨しろを確保する上で筐体本体を肉厚にしなければならない。 In the case of joining by the conventional welding process, since there is no side step portion inside the casing, the position of contact between the partition plate and the inner side face of the casing cannot be specified, and the polishing location cannot be limited. Therefore, there is a problem that a wide surface must be polished in advance, and the casing body must be thick in order to secure a polishing margin.

本実施例の場合、筐体１０の内側面における、仕切板６との当接面のみが肉厚の側面段部１５に形成されていることにより、図６（ｃ）に示すように、仕切板６との当接箇所（研磨箇所Ｋ）の位置特定が容易であり、また、内側面に肉厚の段部として形成されているために、研磨しろを確保することができる。したがって、広い面を研磨加工する必要がなく、筐体１０本体を肉厚にする必要もない。 In the case of the present embodiment, only the contact surface with the partition plate 6 on the inner side surface of the housing 10 is formed on the thick side stepped portion 15, so that as shown in FIG. The position of the contact point (polishing point K) with the plate 6 can be easily specified, and since it is formed as a thick step on the inner surface, a polishing margin can be secured. Therefore, it is not necessary to polish a wide surface, and it is not necessary to make the casing 10 main body thick.

また、図５及び図７に示されるように、本発明の不断水流路形成装置２は、上部筐体１１と下部筐体１２とからなる筐体１０の内側面には、仕切体４が設置された状態において、仕切板６を表裏から挟む上下２箇所の位置に、案内片２０、２１、２０’、２１’が固着されている。図５（ａ）に示されるように案内片２０’、２１’と、図示しない案内片２０、２１が、仕切板６の表裏面と摺接しながら仕切体４を案内するため、仕切体４が上方から筐体１０内の設置位置に向かって下降動作する際に生ずる仕切板６の側面と側面段部１５の当接面との当接位置のずれを防止でき、管内の水圧等の影響下においても、仕切体４の設置作業が容易となる。 As shown in FIGS. 5 and 7, the continuous water flow path forming device 2 according to the present invention is provided with a partition 4 on the inner surface of a housing 10 composed of an upper housing 11 and a lower housing 12. In this state, guide pieces 20, 21, 20 ′, and 21 ′ are fixed to two positions on the upper and lower sides that sandwich the partition plate 6 from the front and the back. As shown in FIG. 5A, the guide pieces 20 ′, 21 ′ and the guide pieces 20, 21 (not shown) guide the partition body 4 while being in sliding contact with the front and back surfaces of the partition plate 6. The displacement of the contact position between the side surface of the partition plate 6 and the contact surface of the side surface step portion 15 that occurs when moving downward from the upper side toward the installation position in the housing 10 can be prevented. In this case, the installation work of the partition 4 is facilitated.

さらに図５（ａ）に示されるように、仕切体４が上方から下降動作する途中地点で、管内を流下する流体の負荷による当接位置のずれを生じている場合でも、筐体内の上部に固着した、仕切板６の表裏一対の案内片２０、２１は上開きテーパ状に形成されているため、仕切板６の挿入初期は挿入作業がし易く、仕切体４は上部における表裏一対の案内片２０、２１の間において、当初のずれを修正しながら下降動作するようになる。 Further, as shown in FIG. 5 (a), even when the abutment position shifts due to the load of the fluid flowing down in the pipe at the midpoint where the partition 4 is lowered from above, The pair of front and back guide pieces 20 and 21 of the partition plate 6 which are fixed are formed in an upwardly tapered shape, so that the insertion work is easy at the initial stage of insertion of the partition plate 6, and the partition body 4 is a pair of front and back guide pieces in the upper part. Between the pieces 20 and 21, the lowering operation is performed while correcting the initial deviation.

また、筐体１０内側面の下部に固着した仕切板６の表裏一対の案内片２０’、２１’は、互いにほぼ平行に向かい合って形成されており、これらの案内片２０’、２１’の上端部２４が、上方に拡開される切欠き部が成形されていることにより、図５（ａ）に示されるように、仕切体４が所定の設置位置に向けてずれを修正されながら下降動作を続ける際に、仕切板６の底面端部が、下部の案内片の上端部２４に突接することなく表裏一対の案内片２０’、２１’の間を案内され、上部の案内片２０、２１においてのずれの修正の後、さらにずれが修正され、また仕切体４は傾くことなく、図５（ｂ）に示されるように所定の設置位置に正確に設置される。 Further, a pair of front and back guide pieces 20 'and 21' of the partition plate 6 fixed to the lower part of the inner side surface of the housing 10 are formed to face each other substantially in parallel, and the upper ends of these guide pieces 20 'and 21' are formed. Since the notch portion is formed so that the portion 24 is expanded upward, as shown in FIG. 5 (a), the partition body 4 is lowered while the displacement is corrected toward the predetermined installation position. When continuing, the bottom end portion of the partition plate 6 is guided between the pair of front and back guide pieces 20 ′, 21 ′ without contacting the upper end portion 24 of the lower guide piece, and the upper guide pieces 20, 21 After the correction of the shift in FIG. 5, the shift is further corrected, and the partition 4 is accurately installed at a predetermined installation position as shown in FIG. 5B without being inclined.

また、図７（ｂ）に示されるように、仕切体４を筐体１０内部の所定位置に設置した場合において、仕切板６を表裏側から挟む位置に向かい合って配設された案内片のうち、流体の流下経路の一部と重なる位置に配設された上下の表側の案内片２０ｓ、２１ｓ’は、その他の案内片２０、２０’よりも上下方向の長さが短く形成されており、管内の水圧等の影響を抑止するようになっている。 Further, as shown in FIG. 7B, when the partition body 4 is installed at a predetermined position inside the housing 10, among the guide pieces arranged facing the position where the partition plate 6 is sandwiched from the front and back sides. The upper and lower front guide pieces 20 s and 21 s ′ disposed at positions overlapping with a part of the fluid flow path are formed shorter in the vertical direction than the other guide pieces 20 and 20 ′. It is designed to suppress the influence of water pressure in the pipe.

仕切体４を筐体１０内部の所定位置に設置した状態が図５（ｂ）に示されており、仕切板６の側面と底面及び上蓋部５の周面に備えられたシール材８ａ、８ｂと、筐体１０内側面及び内底面に備えた側面段部１５、底面段部１６、段部１９とが、水密的に密接しており、管内流体の流下は仕切板６において遮断される。 FIG. 5B shows a state in which the partition 4 is installed at a predetermined position inside the housing 10, and the sealing materials 8 a and 8 b provided on the side and bottom surfaces of the partition plate 6 and the peripheral surface of the upper lid portion 5. Further, the side surface step portion 15, the bottom surface step portion 16, and the step portion 19 provided on the inner side surface and the inner bottom surface of the housing 10 are in close contact with each other in a watertight manner, and the flow of the in-pipe fluid is blocked by the partition plate 6.

この場合において配管全体を平面的に見ると、図１（ｃ）に示すように既設水道管１の既設管路が不断水流路形成装置２内部において遮断され、上流から遮断された管路は開口部Ｂを経て新設水道管３へ連通接続されることとなる。 In this case, when the entire pipe is viewed in a plan view, as shown in FIG. 1 (c), the existing pipe of the existing water pipe 1 is blocked inside the continuous water flow path forming device 2, and the pipe blocked from the upstream is opened. It will be connected to the newly established water pipe 3 through the part B.

また、図８に示すように筐体１０の内側面に振れ止めピン２２が、仕切体４の設置位置における、上蓋部５の下面と当接する高さ位置に所定間隔で４箇所配設されている。さらに、筐体１０の外側面にから内面に向けて螺挿される固定プラグねじ２３が、仕切体４の設置位置における、上蓋部５の上面と当接する高さ位置に所定間隔で６箇所配設されている。 Further, as shown in FIG. 8, four steady rest pins 22 are arranged on the inner surface of the housing 10 at predetermined intervals at a height position where the partition 4 is in contact with the lower surface of the upper lid portion 5. Yes. Further, six fixed plug screws 23 screwed from the outer surface to the inner surface of the housing 10 are disposed at predetermined intervals at a height position where the fixing member 4 is in contact with the upper surface of the upper lid portion 5. Has been.

図５（ｂ）に示す仕切体４の設置位置において、６箇所の固定プラグねじ２３が筐体１０の外側面から螺挿されることにより、固定プラグねじ２３の先端部が、上蓋部５の上面を摺接しながら筐体１０内部中心に向かって進入するため、仕切体４を下方に押圧した状態での固定が可能となる。この場合において、仕切体４の下方への押圧力を高さ位置の等しい４箇所の振れ止めピン２２がストッパーとして受けるため、仕切体４を水平方向を保持したまま、無理な全荷重をシール材に与えることなく下方に押圧固定することができる。 In the installation position of the partition 4 shown in FIG. 5 (b), the six fixed plug screws 23 are screwed from the outer surface of the housing 10, so that the distal end portion of the fixed plug screw 23 becomes the upper surface of the upper lid portion 5. Since it enters toward the center of the inside of the housing 10 while sliding, the partition 4 can be fixed in a state where it is pressed downward. In this case, since the four steady rest pins 22 having the same height position receive the downward pressing force of the partition body 4 as stoppers, the sealing material is subjected to an unreasonable total load while maintaining the partition body 4 in the horizontal direction. Can be pressed and fixed downward.

したがって、仕切板６の側面及び底面に備えたシール材８ｂが、均等に下方に荷重されるため、水密性を確保することができる。 Therefore, since the sealing material 8b provided on the side surface and the bottom surface of the partition plate 6 is evenly loaded downward, water tightness can be ensured.

このように、仕切体４設置の後、管内において流下流体に面する流路切替面７が、流体力を受けた場合においても、特に仕切体４の上部においては振れ止めピン２２が流体力を受けて仕切体４を固定保持し、同様に仕切体４の下部においては仕切板６を挟む位置に配設された下部の案内片２０’、２１’が流体力を受け止めて仕切体４を確実に固定保持する。 Thus, after the partition 4 is installed, even when the flow path switching surface 7 facing the flowing fluid in the pipe receives a fluid force, the steady rest pin 22 exerts the fluid force especially on the upper portion of the partition 4. In the same manner, the partition 4 is fixed and held. Similarly, in the lower part of the partition 4, the lower guide pieces 20 ′ and 21 ′ disposed at the positions sandwiching the partition plate 6 receive the fluid force to ensure the partition 4. Hold on to.

以上、本発明の実施例を図面により説明してきたが、具体的な構成はこれら実施例に限られるものではなく、本発明の要旨を逸脱しない範囲における変更や追加があっても本発明に含まれる。 Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and modifications and additions within the scope not departing from the gist of the present invention are included in the present invention. It is.

例えば、上記実施例では、図１（ａ）で示したように、既設水道管１の流下経路の特定エリアＥを挟んで不断水流路形成装置２を装着した後、上流側の不断水流路形成装置２の内部の既設水道管１を切断し、その後下流側の既設水道管１を切断したが、既設水道管１の切断の順序は、上流側、下流側のどちらから行ってもよい。 For example, in the above embodiment, as shown in FIG. 1A, after installing the continuous water flow path forming device 2 across the specific area E of the flow path of the existing water pipe 1, the upstream continuous water flow path formation is performed. Although the existing water pipe 1 inside the apparatus 2 was cut and then the existing water pipe 1 on the downstream side was cut, the order of cutting the existing water pipe 1 may be performed from either the upstream side or the downstream side.

また、上記実施例では、特定エリアＥを挟んで上流側及び下流側の不断水流路形成装置２の内部の既設水道管１を切断した後、下流側の不断水流路形成装置２の内部において仕切体４を設置し、その後、上流側の仕切体を設置したが、仕切体４の設置の順序は、上流側、下流側のどちらから行ってもよい。 Moreover, in the said Example, after cut | disconnecting the existing water pipe 1 inside the upstream and downstream infinite water flow path formation apparatus 2 on both sides of the specific area E, it partitions in the inside of the downstream continuous water flow path formation apparatus 2 Although the body 4 was installed and then the upstream partition was installed, the order of installation of the partition 4 may be performed from either the upstream side or the downstream side.

また、上記実施例では、筐体１０内部の側面段部１５が、上部から下部に至るにしたがって幅狭になるように形成されているが、側面段部１５が形成されず、筐体１０の内側面が上部から下部に至るにしたがって幅狭になるように形成されていてもよい。 Further, in the above embodiment, the side step 15 in the housing 10 is formed so as to become narrower from the top to the bottom, but the side step 15 is not formed, and The inner side surface may be formed so as to become narrower from the upper part to the lower part.

また、上記実施例では、振れ止めピンの数量は４個であり、また固定プラグねじの数量は６個であるが、必ずしもこれらの数量には限定せず、仕切体４の固定保持の目的が達成できれば何個でもよい。 Further, in the above embodiment, the number of the steady rest pins is four and the number of the fixing plug screws is six. However, the number is not necessarily limited to these numbers, and the purpose of fixing and holding the partition body 4 is as follows. Any number is possible as long as it can be achieved.

また、上記実施例では、既設水道管１の管内流体は上水であるが、管内流体は下水でもよいし、ガスでもよい。 In the above embodiment, the pipe fluid of the existing water pipe 1 is clean water, but the pipe fluid may be sewage or gas.

また、上記実施例では、不断水流路形成装置２の内部における既設水道管１の切断手段は、内空円筒状の穿孔用カッタ３２であったが、既設水道管１を切断できれば切断手段は穿孔用カッタ３２に限らない。 Further, in the above embodiment, the cutting means for the existing water pipe 1 inside the continuous water flow path forming device 2 is the hollow cylindrical drilling cutter 32, but if the existing water pipe 1 can be cut, the cutting means will be drilled. The cutter 32 is not limited to this.

また、上記実施例では、図１１（ａ）に示されるように、底面段部１６の上面は水平であるが、シール性を維持できれば、例えば図１１（ｂ）に示されるように、底面段部１６’の上面が、既設水道管１の上流側に向かって下り勾配に配設されていてもよい。既設水道管１の管内の水流と、底面段部１６’の上面の勾配により、切り粉がさらに底面段部１６’の上面に付着しづらくなる。 Moreover, in the said Example, although the upper surface of the bottom face step part 16 is horizontal as FIG. 11 (a) shows, if a sealing performance can be maintained, for example, as shown in FIG. The upper surface of the part 16 ′ may be arranged in a downward gradient toward the upstream side of the existing water pipe 1. Due to the water flow in the pipe of the existing water pipe 1 and the gradient of the upper surface of the bottom surface step portion 16 ′, the chips are more difficult to adhere to the upper surface of the bottom surface step portion 16 ′.

また、上記実施例では、図４に示されるように、上部筐体１１と下部筐体１２との接合を溶接加工により行っていたが、水密性を維持できれば、接合方法は溶接加工に限らない。例えば、それぞれの筐体の接合部にフランジを配設し、接合面にゴムパッキン等のシール材を挟み込み、ボルト、ナット等で接合してもよい。 Moreover, in the said Example, as FIG. 4 showed, joining with the upper housing | casing 11 and the lower housing | casing 12 was performed by welding, However, If watertightness can be maintained, a joining method will not be restricted to welding. . For example, a flange may be provided at a joint portion of each housing, a sealing material such as rubber packing may be sandwiched between the joint surfaces, and the joints may be joined with bolts, nuts, or the like.

また、上記実施例では、図７に示されるように、筐体１０内左右の側面段部１５、１５を挟む位置に、一対の案内片２０、２１が形成されていたが、仕切体４を正確に設置位置に案内できれば、案内片の形成される位置は、この位置に限らず、例えば、図１２に示されるように、案内片２１、２１’が仕切体４の下流側面のみを支持する位置に形成されていてもよい。 Moreover, in the said Example, as FIG. 7 shows, although the pair of guide pieces 20 and 21 were formed in the position which pinches | interposes the side step parts 15 and 15 on the right and left in the housing | casing 10, If the guide position can be accurately guided, the position where the guide piece is formed is not limited to this position. For example, as shown in FIG. 12, the guide pieces 21, 21 ′ support only the downstream side surface of the partition body 4. It may be formed at a position.

本発明の第１実施形態における既設水道管１に不断水流路形成装置を装着し新設水道管３を連通接続した配管の全体像を示す平面図である。（ａ）は、不断水流路形成装置を既設水道管１に装着し、新設水道管３を連通接続した状態及び管内流体の流下方向を示した平面図であり、（ｂ）は、不断水流路形成装置内部の既設水道管１を切断した状態及び管内流体の流下方向を示した平面図であり、（ｃ）は、既設水道管１を切断した後に、不断水流路形成装置内部に仕切体４を設置した状態及び管内流体の流下方向を示した平面図である。It is a top view which shows the whole image of piping which equip | installed the continuous water flow path formation apparatus to the existing water pipe 1 in 1st Embodiment of this invention, and connected the new water pipe 3 in communication. (A) is a plan view showing a state in which the continuous water channel forming device is attached to the existing water pipe 1 and the new water pipe 3 is connected in communication and the flow direction of the fluid in the pipe, and (b) is a continuous water channel. It is the top view which showed the state which cut | disconnected the existing water pipe 1 inside a formation apparatus, and the flow direction of the fluid in a pipe | tube, (c) is the partition 4 in an unrestricted water flow path formation apparatus, after cutting the existing water pipe 1 It is the top view which showed the state which installed and the flow direction of the fluid in a pipe | tube. （ａ）は、本発明における仕切体４を示す斜視図であり、（ｂ）は不断水流路形成装置の全体像を示す斜視図である。(A) is a perspective view which shows the partition body 4 in this invention, (b) is a perspective view which shows the whole image of a continuous water flow path formation apparatus. 不断水流路形成装置の全体を示す平面図である。It is a top view which shows the whole continuous water flow path formation apparatus. 筐体の内側面及び内底面に一体的に連続して備えられた段部を示した、不断水流路形成装置の筐体のｆ−ｆ断面図である。It is ff sectional drawing of the housing | casing of the continuous water flow path formation apparatus which showed the step part integrally provided by the inner surface and inner bottom face of the housing | casing. （ａ）は、仕切体４が、筐体の上方から設置位置に向けて下降動作する途中地点における、不断水流路形成装置の筐体の縦断面図であり、（ｂ）は仕切体４が、設置位置に設置された地点における、不断水流路形成装置の筐体の縦断面図である。(A) is the longitudinal cross-sectional view of the housing | casing of a continuous water flow path formation apparatus in the middle point in which the partition body 4 descend | falls toward the installation position from the upper direction of a housing | casing, (b) is the partition body 4 It is a longitudinal cross-sectional view of the housing | casing of a continuous water flow path formation apparatus in the point installed in the installation position. 上下２分割の上部筐体１１、下部筐体１２を溶接加工にて接合する突合せ部を示した図３のａ−ａ及びｃ−ｃの拡大断面図であり、（ａ）は溶接加工前の突合せ部を示した拡大断面図であり、（ｂ）は溶接加工後の突合せ部を示した拡大断面図であり、（ｃ）は研磨加工後の突合せ部を示した拡大断面図である。FIG. 4 is an enlarged cross-sectional view of aa and cc in FIG. 3 showing a butting portion for joining the upper housing 11 and the lower housing 12 which are divided into upper and lower parts by welding, and FIG. It is the expanded sectional view which showed the butt | matching part, (b) is the expanded sectional view which showed the butt | matching part after welding processing, (c) is the expanded sectional view which showed the butt | matching part after grinding. 仕切体４を筐体内側面の設置位置に案内する案内片を示した図であり、（ａ）は筐体内の案内片を示した平面図であり、（ｂ）は（ａ）におけるｄ−ｄ断面図であり、（ｃ）は（ａ）におけるｃ−ｃ断面図である。It is the figure which showed the guide piece which guides the partition body 4 to the installation position of the inner surface of a housing | casing, (a) is the top view which showed the guide piece in a housing | casing, (b) is dd in (a). It is sectional drawing, (c) is cc sectional drawing in (a). 仕切体４の筐体内側面の設置位置における振れ止めピン２２を示した側断面図である。FIG. 6 is a side sectional view showing a steady pin 22 at an installation position on an inner side surface of a housing of a partition body 4. 不断水流路形成装置２内部の管を切断する穿孔用カッタを示した概略図である。It is the schematic which showed the cutter for perforation which cut | disconnects the pipe | tube inside the continuous water flow path formation apparatus 2. FIG. 不断水流路形成装置２内部に仕切体４を設置する挿入機を示した概略図である。It is the schematic which showed the insertion machine which installs the partition body 4 in the continuous water flow path formation apparatus 2. FIG. 仕切体４が不断水流路形成装置２内部に設置された状態における図５（ｂ）のｅ−ｅ断面図である。It is ee sectional drawing of FIG.5 (b) in the state in which the partition body 4 was installed in the indefinite water flow path formation apparatus 2. FIG. 仕切体４を筐体内側面の設置位置に案内する案内片の変形例を示した図である。It is the figure which showed the modification of the guide piece which guides the partition body to the installation position of the housing | casing inner surface.

符号の説明Explanation of symbols

１既設水道管
１’ 既設水道管片
２不断水流路形成装置
３新設水道管
４仕切体
５上蓋部
６仕切板
７流路切替面
８ａシール材（上蓋部周面）
８ｂシール材（仕切板周面）
８１ｂシール材（仕切板側面）
８２ｂシール材（仕切板底面）
８ｃシール材（側方開口部Ａ，Ｂ内周面）
１０筐体
１１上部筐体
１２下部筐体
１３排水口
１４リブ
１５側面段部
１６底面段部
１６’ 底面段部（上面勾配）
１７フランジ
１７’ 押し輪
１８開先部
１９段部（上蓋部用）
２０上部案内片（表側）
２１上部案内片（裏側）
２０’ 下部案内片（表側）
２１’ 下部案内片（裏側）
２０ｓ上部案内片（表側）短片
２０ｓ’ 下部案内片（表側）短片
２２振れ止めピン
２３固定プラグねじ
２４下部案内片上端部
３０開閉弁
３１胴体
３１’ 胴体
３２穿孔用カッタ
３２ａ穿孔刃
３２ｂセンタードリル
３２ｃ掛止片
３３ストローク
３４挿入機
Ａ側方開口部（既設水道管上流側）
Ａ’ 側方開口部（既設水道管下流側）
Ｂ側方開口部（新設水道管側）
Ｃ中心軸
Ｄ中心軸
Ｅ特定エリア
Ｋ研磨箇所
Ｕ上方開口部 DESCRIPTION OF SYMBOLS 1 Existing water pipe 1 'Existing water pipe piece 2 Unidentified water flow path formation apparatus 3 New water pipe 4 Partition 5 Upper cover part 6 Partition plate 7 Flow path switching surface 8a Sealing material (upper cover peripheral surface)
8b Seal material (partition plate peripheral surface)
81b Sealing material (partition plate side)
82b Sealing material (partition plate bottom)
8c Sealing material (side openings A, B inner peripheral surface)
DESCRIPTION OF SYMBOLS 10 Housing | casing 11 Upper housing | casing 12 Lower housing | casing 13 Drain outlet 14 Rib 15 Side surface step part 16 Bottom surface step part 16 'Bottom surface step part (upper surface gradient)
17 Flange 17 'Push ring 18 Groove part 19 Step part (for upper cover part)
20 Upper guide piece (front side)
21 Upper guide piece (back side)
20 'Lower guide piece (front side)
21 'Lower guide piece (back side)
20s Upper guide piece (front side) short piece 20s 'Lower guide piece (front side) short piece 22 Stabilizing pin 23 Fixed plug screw 24 Lower guide piece upper end 30 Open / close valve 31 Body 31' Body 32 Drilling cutter 32a Drilling blade 32b Center drill 32c Hanging piece 33 Stroke 34 Inserting machine A Side opening (upstream side of existing water pipe)
A 'Side opening (downstream side of existing water pipe)
B side opening (new water pipe side)
C Center axis D Center axis E Specific area K Polishing location U Upper opening

Claims

既設流体管の外周面を少なくとも３方向の流路を確保できる筐体で密封し、不断水状態で前記既設流体管を切断して、前記筐体内部に設置した挿入手段により、仕切体を設置して他の流路を形成する既設流体管の不断水流路形成装置であって、
前記仕切体が前記筐体内の流体の少なくとも１流路を遮断する仕切板からなり、前記筐体の内側面には、前記仕切板の表裏両側を挟持して前記筐体内部の設置位置へ案内する表裏一対の案内片が設けられているとともに、前記案内片が上下に少なくとも２分割されており、うち上部における表裏一対の案内片が上開きテーパ状に形成され、下部における表裏一対の案内片がほぼ平行に設けられ、該案内片の上端部が上方に拡開された切欠き部に形成されていることを特徴とする既設流体管の不断水流路形成装置。 The outer peripheral surface of the existing fluid pipe is sealed with a casing capable of securing at least three directions of flow paths, the existing fluid pipe is cut in an undisturbed state of water, and the partition is installed by the insertion means installed inside the casing. And a continuous water flow path forming device for an existing fluid pipe that forms another flow path,
The partition includes a partition plate that blocks at least one flow path of the fluid in the housing, and guides to the installation position inside the housing by sandwiching both front and back sides of the partition plate on the inner surface of the housing. A pair of front and back guide pieces are provided, and the guide pieces are divided into at least two parts in the vertical direction, and the pair of front and back guide pieces in the upper part is formed in an upwardly opening tapered shape, and the pair of front and back guide pieces in the lower part. Is provided in a substantially parallel manner, and the upper end portion of the guide piece is formed in a notch portion that is widened upward .