JP4541845B2

JP4541845B2 - Continuous water flow path forming device for existing fluid pipes

Info

Publication number: JP4541845B2
Application number: JP2004330342A
Authority: JP
Inventors: 実澤田
Original assignee: Cosmo Koki Co Ltd
Current assignee: Cosmo Koki Co Ltd
Priority date: 2004-11-15
Filing date: 2004-11-15
Publication date: 2010-09-08
Anticipated expiration: 2024-11-15
Also published as: JP2006138440A

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形成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, which can form a 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、既設管の切断の後、管内において切断面間に設置された仕切体が、管内の流下流体による水圧等の負荷を受けて、仕切壁の側周面と筐体の内側面との当接面が所定の設置位置から変位するため、当接面に備えられていたシール材が当接面から変位し、変位した箇所から流体が溢水して、仕切体のシール効果が減ずる問題があった。 However, in Patent Document 1, after the existing pipe is cut, the partition installed between the cut surfaces in the pipe receives a load such as water pressure due to the falling fluid in the pipe, and the side peripheral surface of the partition wall Since the contact surface with the inner surface of the housing is displaced from the predetermined installation position, the sealing material provided on the contact surface is displaced from the contact surface, and the fluid overflows from the displaced portion, and the partition body There was a problem that the sealing effect of the diminished.

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設置された仕切体が、管内の流下流体による水圧等の負荷を受けた場合においても、仕切壁の側周面と既設管内周面との当接面が所定の設置位置から変位せずに、シール効果を維持した仕切体を提供することを目的とする。 The present invention has been made paying attention to such problems, and after the existing pipe is cut, the partition installed between the cut surfaces in the pipe is subjected to a load such as water pressure due to the falling fluid in the pipe. Even in this case, an object of the present invention is to provide a partition body that maintains the sealing effect without the contact surface between the side peripheral surface of the partition wall and the inner peripheral surface of the existing pipe being displaced from a predetermined installation position.

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、筐体内部に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壁と、引導曲面を有する流体案内部と、前記仕切壁の上端部と一体的に連接される上蓋部とからなり、前記仕切壁の周縁面と、前記上蓋部の周縁面とにシール材が備えられており、前記シール材が前記筐体の内側面と水密的に圧接するように形成され、前記仕切体が前記筐体内に設置された位置において、前記上蓋部の下面と近接もしくは当接する振れ止めピンが前記筐体の内側面に固着され、さらに前記上蓋部を上方から下方に押圧できる固定プラグねじが前記筐体の外側から筐体内側に突設可能に配設されており、前記筐体の内側面における、前記仕切壁の両側面に備えたシール材の当接する当接面が、互いに異なる前記他の流路を形成するように、前記筐体の内側面に肉厚の側面段部として少なくとも２対形成されるとともに、各対の前記側面段部の両わきには、前記仕切壁を表裏両側から挟持する表裏１対の案内片がそれぞれ形成されており、更に該案内片が上下に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平行に形成されているとともに、下部における表裏一対の案内片の上端部が、上方に拡開される切欠き部が成形されていることを特徴としている。
この特徴によれば、水圧等の負荷により仕切壁に回転力が発生することで、上蓋部の一方に上方押力が加わり、他方に下方押力が加わっても、上蓋部の上面に当接された固定プラグねじと、上蓋部の下面に近接もしくは当接された振れ止めピンとによって、上蓋部が上下から固定保持されるため、仕切体の変位がシール材の弾性変形の範囲内に抑止され、仕切体のシール効果を維持することができる。
また、筐体内の下方に設けられた案内片が、仕切壁にかかる水圧等の負荷を受け止めるため、仕切体の変位が効果的に抑止される。
更に、筐体内における仕切体の設置位置を、予め少なくとも２対の案内片が形成されたいずれの箇所にも適宜選択することができるため、流路の変更方向にしたがって筐体の案内片の形成箇所を変える必要がなく、筐体の設計製作の手間やコストが抑えられる。 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. The existing fluid pipe is cut in the undisturbed water state, the partition body is installed inside the housing to form another flow path, and the existing fluid pipe is configured as a continuous water flow path forming device,
The partition body includes a partition wall that blocks at least one flow path of the fluid in the housing, a fluid guide portion having a guiding curved surface, and an upper lid portion that is integrally connected to an upper end portion of the partition wall, A sealing material is provided on a peripheral surface of the partition wall and a peripheral surface of the upper lid portion, the sealing material is formed so as to be in watertight pressure contact with an inner surface of the housing, and the partition body is the housing. At a position installed in the body, an anti-spin pin that is close to or in contact with the lower surface of the upper lid portion is fixed to the inner side surface of the housing, and a fixed plug screw that can press the upper lid portion downward from above is provided on the housing. The inner surface of the housing is arranged so as to protrude from the outside of the housing, and the contact surfaces with which the sealing materials provided on both side surfaces of the partition wall abut are different from each other. On the inner surface of the housing to form a path At least two pairs of thick side stepped portions are formed, and on both sides of each pair of side stepped portions, a pair of front and back guide pieces are formed to sandwich the partition wall from both the front and back sides, respectively. The guide piece is divided into two vertically, and a pair of front and back guide pieces in the upper part is formed in an upwardly open tapered shape, a pair of front and back guide pieces in the lower part are formed in parallel, and a pair of front and back parts in the lower part are formed. The upper end portion of the guide piece is characterized by a notch that is expanded upward .
According to this feature, when a rotational force is generated on the partition wall by a load such as water pressure, an upper pressing force is applied to one of the upper lid portions, and even if a lower pressing force is applied to the other, it abuts the upper surface of the upper lid portion. The upper lid portion is fixed and held from above and below by the fixed plug screw and the steady pin that is close to or in contact with the lower surface of the upper lid portion, so that the displacement of the partition is suppressed within the range of elastic deformation of the seal material. The sealing effect of the partition can be maintained.
Moreover, since the guide piece provided in the lower part in a housing | casing receives load, such as the hydraulic pressure concerning a partition wall, the displacement of a partition body is suppressed effectively.
Furthermore, since the installation position of the partition in the housing can be appropriately selected at any location where at least two pairs of guide pieces are formed in advance, the guide piece of the housing is formed according to the change direction of the flow path. There is no need to change the location, and the effort and cost of designing and manufacturing the housing can be reduced.

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（ａ）は、仕切体４の側面と一部断面を示した図であり、（ｂ）は仕切体４の正面図である。図４（ａ）は、不断水流路形成装置２の全体像を示す平面図であり、（ｂ）は、同じく仕切体４が設置された位置を示した平面図である。図５は、筐体１０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１５、１６を示した、筐体１０のｆ−ｆ断面図である。図６（ａ）は、仕切体４が、筐体１０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、筐体１０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、筐体１０の縦断面図である。図７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４（ａ）のａ−ａ及びｂ−ｂ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８（ａ）は筐体１０内の案内片２０、２０’、２１、２１’を示した平面図であり、（ｂ）は（ａ）のｄ−ｄ断面図であり、（ｃ）は同じくｃ−ｃ断面図である。図９は、仕切体４の筐体１０内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１０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３２を示した概略図である。図１１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３４を示した概略図である。図１２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６（ｂ）のｅ−ｅ断面図である。図1３（ａ）は、本発明の第２実施形態における、不断水流路形成装置２’の全体像を示す斜視図であり、（ｂ）は同じく不断水流路形成装置２’の平面図である。図１４は、仕切体の変形例を示した斜視図である。 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. 3A is a view showing a side surface and a partial cross section of the partition 4, and FIG. 3B is a front view of the partition 4. FIG. 4A is a plan view showing the entire image of the continuous water flow path forming device 2, and FIG. 4B is a plan view showing the position where the partition body 4 is similarly installed. FIG. 5 is a cross-sectional view of the housing 10 taken along the line ff showing the step portions 15 and 16 provided integrally and continuously on the inner side surface and the inner bottom surface of the housing 10. FIG. 6A is a longitudinal sectional view of the housing 10 at a midpoint where the partition 4 is moved downward from the top of the housing 10 toward the installation position, and FIG. 6B is a diagram illustrating the partition 4 being installed. It is a longitudinal cross-sectional view of the housing | casing 10 in the point installed in the position. FIG. 7 is an enlarged cross-sectional view taken along lines aa and bb in FIG. 4A, 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. ) Is an enlarged cross-sectional view showing a butt portion before welding, (b) is an enlarged cross-sectional view showing a butt portion after welding, and (c) an enlarged cross-section showing a butt portion after polishing. FIG. FIG. 8A is a plan view showing the guide pieces 20, 20 ′, 21, 21 ′ in the housing 10, FIG. 8B is a dd sectional view of FIG. 8A, and FIG. Similarly it is cc sectional drawing. FIG. 9 is a side sectional view showing the steady pin 22 at the installation position in the housing 10 of the partition 4. FIG. 10 is a schematic view showing a piercing cutter 32 for cutting a pipe inside the continuous water flow path forming device 2. FIG. 11 is a schematic view showing an insertion machine 34 for installing the partition body 4 inside the continuous water flow path forming device 2. FIG. 12 is a cross-sectional view taken along line ee of FIG. 6B in a state where the partition 4 is installed inside the continuous water flow path forming device 2. FIG. 13 (a) is a perspective view showing an entire image of the continuous water flow path forming apparatus 2 ′ in the second embodiment of the present invention, and FIG. 13 (b) is a plan view of the continuous water flow path forming apparatus 2 ′. . FIG. 14 is a perspective view showing a modification of the partition.

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９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 FIG. 2 and FIG. 9, the external 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４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 4, 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の上方及び下方から、中心軸Ｃと既設水道管の中心軸とを合わせる位置で、既設水道管の外周部に装着する。既設水道管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7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 C from above and below the existing water pipe. Attach to the outer periphery of the existing water pipe at a position that matches the center axis of the existing water pipe. A butt portion of the upper housing 11 and the upper housing 12 attached to the outer peripheral portion of the existing water pipe is formed with a groove portion 18 for welding, and as will be described later with reference to FIG. The upper housing 11 and the lower housing 12 are joined by welding from the outer surface of the lower housing 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 inside of the housing 10 becomes watertight by joining the upper housing 11 and the lower housing 12 by welding, and joining the both ends of the opening A and the opening A ′ and the outer peripheral surface of the existing water pipe. Yes.

ここで、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, as shown in FIG. 1 and described above, after installing the continuous water flow path forming device 2 at two locations, the upstream portion and the downstream portion sandwiching the specific area E of the existing water pipe 1, the respective openings are opened. A new water pipe 3 connected in watertight communication with the part 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１０、図１１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. 10 and 11. 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 hooking piece 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箇所の切断面の間で既設水道管片１’が既設水道管１の管路から分断される。図４（ｂ）に示されるように、穿孔用カッタ３２での切断により、既設水道管１の切断面１ａは平面視円弧形状に形成される。 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 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 is cut between the two cut surfaces. The piece 1 ′ is cut off from the existing water pipe 1. As shown in FIG. 4B, the cut surface 1 a of the existing water pipe 1 is formed in an arc shape in plan view by cutting with the piercing cutter 32.

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１０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 undisturbed water state. Therefore, the existing water pipe 1 is filled with water pressure. In the cutting operation by the perforating 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 water state. Further, this cutting operation is performed while opening the drainage port 13 shown in FIG. 10 and discharging the chips generated at the time of cutting the existing water pipe 1 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１１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 piece 1 ′ and the continuous water flow path forming device 2 on the downstream side after discharging the chips, as shown in FIG. 11, 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、図２（ａ）で示されるように仕切体４は、互いに連通した２口の連通口７ａ、７ｂを有し既設の流路を変更するエルボー状の曲管からなる連通管７と、連通管７が連通管支持部材９ａ及び底板９ｂにより固着される仕切壁６と、仕切壁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とからなる。 Here, as shown in FIG. 2 (a), the partition 4 includes two communicating ports 7a and 7b communicating with each other, and a communicating tube 7 made of an elbow-shaped bent tube that changes an existing flow path. The communication tube 7 includes a partition wall 6 to which the communication tube 7 is fixed by the communication tube support member 9a and the bottom plate 9b, and a circular upper lid portion 5 provided in the horizontal direction and integrally connected to the upper end portion of the partition wall 6.

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、仕切壁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及び筐体１０の底面の一部が膨出した底面段部１６と水密的に圧接するように形成されている。 A sealing material 8 a provided on the peripheral surface of the upper lid portion 5 is formed so as to be in watertight pressure contact with a step portion 19 provided on the inner side surface of the housing 10. Similarly, a sealing material 8b including a sealing material 81b provided on both side surfaces of the partition wall 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 in which a part of the bottom surface of the housing 10 bulges are formed in a watertight manner.

図４（ｂ）及び図６（ｂ）で示されるように、連通管７の直径は、既設水道管１及び新設水道管３の直径とほぼ同じに形成されている。また、仕切体４が筐体１０内に予め形成された底面段部１６上に設置された位置において、連通管７の一方の連通口７ａは、既設水道管１の切断面の近傍に配置されるようになり、連通口７ａの中心が既設水道管１の中心軸とほぼ同軸となる。 As shown in FIGS. 4B and 6B, the diameter of the communication pipe 7 is formed to be approximately the same as the diameters of the existing water pipe 1 and the new water pipe 3. In addition, at the position where the partition 4 is installed on the bottom step 16 formed in advance in the housing 10, one communication port 7 a of the communication pipe 7 is disposed in the vicinity of the cut surface of the existing water pipe 1. Thus, the center of the communication port 7a is substantially coaxial with the central axis of the existing water pipe 1.

同様に、仕切体４が筐体１０内に設置された位置において、連通管７の他方の連通口７ｂは、新設水道管３側の側方開口部Ｂの近傍に配置されるようになり、連通口７ｂの中心が新設水道管３の中心軸とほぼ同軸となる。 Similarly, at the position where the partition 4 is installed in the housing 10, the other communication port 7 b of the communication pipe 7 is arranged in the vicinity of the side opening B on the new water pipe 3 side, The center of the communication port 7 b is substantially coaxial with the central axis of the newly installed water pipe 3.

したがって既設の流路が、既設水道管１の切断面から略同径の連通管７を介して新設水道管３に通じているため、既設水道管１内の流体が、乱れを生じることがほとんどなく連通管７内及び新設水道管３内を流下するようになっている。 Therefore, since the existing flow path leads from the cut surface of the existing water pipe 1 to the new water pipe 3 via the communication pipe 7 having substantially the same diameter, the fluid in the existing water pipe 1 is likely to be disturbed. Instead, it flows down through the communication pipe 7 and the newly established water pipe 3.

図１１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６（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連通管７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。 As shown in FIG. 11, when the partition 4 is pressed downward by the insertion machine 34 and installed inside the housing 10 shown in FIG. 6B, the fluid flowing down from the upstream side of the opening A is obtained. The flow path is changed substantially orthogonally in the horizontal direction by the communication pipe 7 and is formed so as to flow out from the opening B to the downstream side.

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 a state in which the flowing-down fluid bypasses in the upstream continuous water flow path forming device 2 and 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５で示すように、仕切壁６の底面との当接面が、肉厚の段部に形成されているために、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、仕切壁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. 5, the contact surface with the bottom surface of the partition wall 6 is formed in a thick stepped portion. When cutting the existing water pipe 1 by 32, the chips generated and dropped from the cut surface of the existing water pipe 1 and adhering to the abutting surface of the bottom surface step portion 16 flow down in the existing water pipe 1 Alternatively, due to the turbulent water flow generated by the rotating operation of the cylindrical piercing 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 the partition body 4 is installed, the sealing material 82b provided on the bottom surface of the partition wall 6 is pressed by the bottom surface step portion 16 without inserting chips, and 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６（ａ）で示すように、仕切壁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. 6A, a sealing material 8b including sealing materials 81b and 82b integrally connected to both side surfaces and a bottom surface of the partition wall 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６（ｂ）で示されるように、仕切体４を筐体１０内部に設置した位置において、仕切壁６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。 Thereby, as shown in FIG. 6B, at the position where the partition 4 is installed inside the housing 10, the lower end corners of the partition wall 6 and the both ends of the bottom step 16 of the housing 10 are in contact with each other. Since the contact surfaces coincide with each other on the corresponding R surfaces, when the partition 4 is installed inside the housing 10, the load applied to the bottom sealing material 82b can be gradually borne on both side sealing materials 81b. It becomes possible, the horizontal 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６（ａ）に示されるように、仕切壁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、仕切壁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. 6A, the partition wall 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 a change in the width dimension of the partition wall 6. As described above, the side surface step portion 15 inside the housing 10 is formed so as to become narrower from the upper part to the lower part.

したがって、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、仕切壁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、仕切壁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, in the case where the partition body 4 is installed, during the descending operation of the partition body 4, the sealing material 81 b provided on both side surfaces of the partition wall 6 is almost compressed by sliding contact with the inner surface of the housing 10. In the installation position, the sealing material 8b provided on both side surfaces and the bottom surface of the partition wall 6 contacts the inner surface of the housing 10 almost simultaneously, so that fluid leakage due to deformation of the sealing material 8b can be prevented.

また図６（ｂ）に示されるように、仕切体４が筐体１０内部に設置された場合において、仕切壁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壁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, as shown in FIG. 6B, when the partition 4 is installed inside the housing 10, the sealing material 8b provided on both side surfaces and the bottom surface of the partition wall 6 and the inner surface of the housing 10 are in contact with each other. After the contact, the load applied to the sealing material 82b on the bottom surface of the partition wall 6 that receives the downward pressing force can be gradually applied to the sealing material 81b on both side surfaces via the R surfaces at both ends of the bottom surface. Therefore, it is possible to prevent lateral deformation of the bottom sealing material 82b and maintain the sealing effect on the contact surface.

また、仕切壁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、仕切壁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 wall 6 are tapered in front view, the weight of the partition body 4 is the sealing material on the bottom surface of the partition wall 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５に示されるように、仕切壁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、仕切壁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. 5, the contact surface on the inner surface of the housing 10 of the partition wall 6 is formed as a thick step portion slightly inward from the other inner surfaces. Compared with the case where the inner surface of the casing 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 wall 6 can be ensured only by processing the side step portion 15. Formation is simple and inexpensive.

また、筐体１０の内側面及び内底面における、仕切壁との当接面が筐体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。 Moreover, since the contact surface with the partition wall in the inner side surface and inner bottom surface of the housing | casing 10 forms the side surface step part 15 and the bottom face step part 16 in the inner side of the housing | casing 10, the outer peripheral surface of the existing water pipe Within the larger casing 10, the size and shape of the partition 4 can be kept small, and the labor for installing the partition 4 can be reduced.

また、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７（ａ）に示されるように、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。 In addition, the continuous water flow path forming device 2 of the present invention has a structure that is divided into upper and lower parts at a substantially central height, and a method for joining the casings 10 having the divided structure will be described below. 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. As shown in FIG. 7A, the upper housing 11 and the lower housing 12 are joined. The butt portion with the body 12 has a groove portion 18 on the outer surface.

図７（ｂ）に示されるように、筐体１０の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壁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壁との当接箇所（研磨箇所Ｋ）を、研磨加工による表面処理を施す。 As shown in FIG. 7B, a part of the melted and solidified welding material is formed as a build-up portion on the inner side surface of the casing 10 by welding from the outer side surface of the casing 10. Therefore, in order to maintain the above-described sealing effect, in order to smooth the contact surface with the partition wall 6 on the inner side surface of the housing 10, the contact portion with the partition wall (polishing portion) of the build-up portion. K) is subjected to a 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、仕切壁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 conventional welding, since there is no side step portion inside the housing, the location of contact between the partition wall and the inside surface of the housing 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、仕切壁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７（ｃ）に示すように、仕切壁との当接箇所（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 wall 6 on the inner side surface of the housing 10 is formed on the thick side surface step portion 15, so that as shown in FIG. It is easy to specify the position of the contact point (polishing point K) with the wall, 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６及び図８に示されるように、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、仕切壁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６（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、仕切壁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壁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。 Further, as shown in FIGS. 6 and 8, the guide piece 20 is provided at two positions on the inner side surface of the housing 10 in the upper and lower positions sandwiching the partition wall 6 from the front and back in a state where the partition body 4 is installed. 21, 20 ′, 21 ′ are fixed. As shown in FIG. 6A, the guide pieces 20 ′ and 21 ′ and the guide pieces 20 and 21 (not shown) guide the partition 4 while being in sliding contact with the front and back surfaces of the partition wall 6. The displacement of the contact position between the side surface of the partition wall 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、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１０内の上部に固着した、仕切壁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、仕切壁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, even when the contact position shifts due to the load of the fluid flowing down in the pipe at the midpoint where the partition body 4 is lowered from above, the front and back surfaces of the partition wall 6 fixed to the upper part in the housing 10 are obtained. Since the pair of guide pieces 20 and 21 are formed in an upwardly opening tapered shape, the insertion work is easy at the initial insertion of the partition wall 6, and the partition body 4 is between the pair of front and back guide pieces 20 and 21 in the upper part. The robot moves downward while correcting the initial deviation.

また、筐体１０内の下部に固着した仕切壁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６（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、仕切壁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６（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。 In addition, a pair of front and back guide pieces 20 ′ and 21 ′ of the partition wall 6 fixed to the lower part in the housing 10 are formed to face each other substantially in parallel, and upper end portions of these guide pieces 20 ′ and 21 ′. 24, since the notch portion that is expanded upward is formed, as shown in FIG. 6 (a), the partition body 4 moves downward while being corrected for deviation toward a predetermined installation position. When continuing, the bottom end of the partition wall 6 is guided between the pair of front and back guide pieces 20 ′ and 21 ′ without contacting the upper end 24 of the lower guide piece. After the correction of the deviation, the deviation is further corrected, and the partition body 4 is accurately installed at a predetermined installation position as shown in FIG. 6B without being inclined.

また図４（ｂ）に示されるように、仕切体４が筐体１０内に設置された位置において、連通口７ａは既設水道管１の切断面１ａの近傍に配置され、同様に連通口７ｂは新設水道管３側の側方開口Ｂ’の近傍に配置されるようになる。 As shown in FIG. 4B, the communication port 7a is disposed in the vicinity of the cut surface 1a of the existing water pipe 1 at the position where the partition 4 is installed in the housing 10, and similarly, the communication port 7b. Is arranged in the vicinity of the side opening B ′ on the new water pipe 3 side.

さらに、既設水道管１の切断面１ａの平面視円弧形状に合致するように、連通口７ａが同様の平面視円弧形状に形成されている。同様に、側方開口Ｂ’の平面視円弧形状に合致するように連通口７ｂの形状が形成されている。 Further, the communication port 7a is formed in the same arc shape in plan view so as to match the arc shape in plan view of the cut surface 1a of the existing water pipe 1. Similarly, the shape of the communication port 7b is formed so as to match the circular arc shape in plan view of the side opening B '.

したがって、既設管路内の流体が連通管７内を流下する際に、連通口７ａ、７ｂ付近で乱れなどの影響により仕切体４が振動等の負荷を受けることが少ないため、仕切壁６周面のシール性の保持を長期間維持できる。 Therefore, when the fluid in the existing pipe flows down through the communication pipe 7, the partition 4 is less likely to receive a load such as vibration near the communication ports 7a and 7b. The surface sealability can be maintained for a long time.

仕切体４を筐体１０内部の所定位置に設置した状態が図６（ｂ）に示されており、仕切壁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壁６において遮断される。 A state in which the partition 4 is installed at a predetermined position inside the housing 10 is shown in FIG. 6B, and the sealing materials 8 a and 8 b provided on the side and bottom surfaces of the partition wall 6 and the peripheral surface of the upper lid 5. 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 fluid in the pipe is blocked by the partition wall 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９に示されるように筐体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. 9, 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. ing. 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.

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。 At the installation position of the partition 4, six fixed plug screws 23 are screwed from the outer surface of the housing 10, so that the tip of the fixed plug screw 23 is in sliding contact with the upper surface of the upper lid portion 5. Since it approaches toward the inner center, the partition 4 can be fixed in a state where it is pressed downward.

仕切体４の下方への不均等な押圧力が加わった場合には、高さ位置の等しい４箇所の振れ止めピン２２のいずれかが、上蓋部５の下面と当接して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８ａ、８ｂに与えることなく下方に押圧固定することができる。 When uneven pressing force is applied to the lower side of the partition 4, any one of the four steady rest pins 22 having the same height position is in contact with the lower surface of the upper lid 5 and receives as a stopper. The partition body 4 can be pressed and fixed downward without applying an excessive total load to the sealing materials 8a and 8b while maintaining the horizontal direction.

したがって、仕切壁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 wall 6 is evenly loaded downward, water tightness can be ensured.

このように、仕切体４設置の後、流下流体に面する連通管７の管内面が流体力を受けた場合においても、とくに仕切体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壁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, even when the pipe inner surface of the communication pipe 7 facing the flowing fluid is subjected to a fluid force after the partition body 4 is installed, the steady rest pin 22 receives the fluid force particularly in the upper part of the partition body 4. The partition body 4 is fixedly held, and similarly, in the lower part of the partition body 4, the lower guide pieces 20 ′ and 21 ′ disposed at positions where the partition wall 6 is sandwiched receive the fluid force to securely fix the partition body 4. Hold.

また、図９に示されるように、仕切体４設置の後、流下流体に面する連通管７の内曲面に水圧等の負荷がかかり仕切体４に回転力が発生しても、上蓋部５の上面に当接された固定プラグねじ２３と、上蓋部５の下面に近接もしくは当接された振れ止めピン２２とによって、上蓋部５が上下から固定保持されるため、仕切体４の変位がシール材８ａ、８ｂの弾性変形の範囲内に抑止され、仕切体４のシール効果を維持することができる。 Further, as shown in FIG. 9, after the partition body 4 is installed, even if a load such as water pressure is applied to the inner curved surface of the communication pipe 7 facing the flowing fluid and a rotational force is generated in the partition body 4, the upper lid portion 5. Since the upper lid portion 5 is fixed and held from above and below by the fixed plug screw 23 abutted on the upper surface and the steady pin 22 in proximity to or abutted against the lower surface of the upper lid portion 5, the displacement of the partition 4 is reduced. It is restrained within the range of elastic deformation of the sealing materials 8a and 8b, and the sealing effect of the partition 4 can be maintained.

また、図６（ｂ）に示される仕切壁６を表裏両側から挟持するように、図８に示される筐体１０の内側面の下方に案内片２０’、２１’が表裏一対に設けられており、これらの案内片２０’、２１’が、仕切壁６にかかる水圧等の負荷を受け止めるため、仕切体４の変位が効果的に抑止される。 Further, a pair of front and back guide pieces 20 ′ and 21 ′ are provided below the inner side surface of the housing 10 shown in FIG. 8 so as to sandwich the partition wall 6 shown in FIG. Since these guide pieces 20 ′ and 21 ′ receive a load such as water pressure applied to the partition wall 6, the displacement of the partition body 4 is effectively suppressed.

次に、第２実施形態に係る既設流体管の不断水流路形成装置につき、図１３を参照して説明する。なお、上記実施形態と同一構成で重複する構成を省略する。 Next, a continuous water flow path forming device for an existing fluid pipe according to a second embodiment will be described with reference to FIG. In addition, the same structure as the said embodiment and the overlapping structure are abbreviate | omitted.

図１３に示されるように本実施例における筐体１０’は、内側面から内底面にかけて一体的に形成される側面段部１５、底面段部１６及び側面段部１５ａ、底面段部１６ａが、互いに交差するように平面視略直角状に２対設けられており、それぞれの側面段部の両わきには、案内片２０、２１及び案内片２０ａ、２１ａが設けられている。 As shown in FIG. 13, the housing 10 ′ in this embodiment includes a side step 15, a bottom step 16, a side step 15 a, and a bottom step 16 a that are integrally formed from the inner side to the inner bottom. Two pairs are provided substantially perpendicular to each other so as to intersect each other, and guide pieces 20 and 21 and guide pieces 20a and 21a are provided on both sides of each side step.

したがって仕切体４が、筐体１０’内の２条いずれの段部にも設置可能なように形成されているために、例えば図１（ｃ）に示されるように、既設水道管１の特定エリアＥを挟んで上流側及び下流側に筐体１０’、１０’を設置して、それぞれ仕切体４を配設する場合に、それぞれの筐体１０’、１０’内において仕切体４の設置位置を変更するのみで配設が可能となる。 Therefore, since the partition 4 is formed so that it can be installed on any two steps in the casing 10 ', for example, as shown in FIG. 1 (c), the existing water pipe 1 is specified. When the casings 10 ′ and 10 ′ are installed on the upstream side and the downstream side across the area E, and the partition bodies 4 are respectively disposed, the partition bodies 4 are installed in the casings 10 ′ and 10 ′. Arrangement is possible only by changing the position.

つまり既設水道管１と新設水道管３との管路変更方向に応じて、筐体１０’内における段部の配設仕様を変更することが不要となるため、仕様変更に係る設計製作の手間やコストが軽減される。 In other words, it is not necessary to change the arrangement specification of the stepped portion in the housing 10 'according to the direction of changing the pipeline between the existing water pipe 1 and the new water pipe 3, so it is time and effort for design and production related to the specification change. And costs are reduced.

また、本実施例において仕切体４が筐体１０’内に設置された位置においては、既設水道管１から連通管７を介して新設水道管３へ新流路が形成されるため、筐体１０’内において、仕切壁６の側面と当該当接していない他方の側面段部及び底面段部により、前記新流路における流れが影響を受けることなくスムーズに管内を流下する。 Further, in the present embodiment, a new flow path is formed from the existing water pipe 1 to the new water pipe 3 through the communication pipe 7 at the position where the partition 4 is installed in the housing 10 '. In 10 ', the flow in the new flow path smoothly flows down in the pipe by the side surface of the partition wall 6 and the other side surface step portion and bottom surface step portion which are not in contact with each other without being influenced by the flow.

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 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、同じく上流側において仕切体４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 The body 4 was installed, and then the partition body 4 was also installed on the upstream side. However, the order of installation of the partition body 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。 Moreover, in the said Example, although the cutting means of the existing water pipe 1 in the inside of the continuous water flow path formation apparatus 2 was the inside hollow cylindrical drilling cutter 32, if the existing water pipe 1 can be cut | disconnected, a cutting means will be perforated. The cutter 32 is not limited to this.

また、上記実施例では、図１２（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１２（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. 12 (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 ′.

さらに、上記実施例では、図５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。 Furthermore, in the said Example, as FIG. 5 showed, although joining with the upper housing | casing 11 and the lower housing | casing 12 was performed by welding, if a 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２（ａ）及び図３に示されるように２口の連通口７ａ、７ｂを連通する曲管からなる連通管７により、既設流路を変更していたが、流路の変更手段としては流路内の流体を案内する引導曲面を有していればよく、必ずしも曲管である必要はない。例えば図１４に示されるように、内曲側面部を有さない連通路２５であってもよい。 Moreover, in the said Example, although the existing flow path was changed by the communication pipe 7 which consists of a curved pipe which connects two communication ports 7a and 7b as shown in FIG. 2 (a) and FIG. The channel changing means only needs to have a guiding curved surface that guides the fluid in the channel, and is not necessarily a curved pipe. For example, as shown in FIG. 14, the communication path 25 having no inner curved side surface portion may be used.

また、上記実施例で仕切体４は、図２（ａ）に示されるように流体を案内する連通管７が別体からなる仕切壁６に固着されている構造となっているが、既設の管路を遮断して流体を案内すればはじめから一体的な構造を有していてもよい。例えば仕切体は、筐体内面と当接する外周面にシール材を備えたブロック体であり、該ブロック体の外面には少なくとも２口の連通口が形成され、該ブロック体の内部には該連通口を引導曲面を介して連通するトンネル部が形成されていてもよい。 In the above embodiment, the partition 4 has a structure in which the communication pipe 7 for guiding the fluid is fixed to the separate partition wall 6 as shown in FIG. It may have an integral structure from the beginning as long as the fluid is guided by blocking the pipeline. For example, the partition body is a block body provided with a sealing material on the outer peripheral surface that comes into contact with the inner surface of the housing. At least two communication ports are formed on the outer surface of the block body, and the communication body is formed inside the block body. A tunnel portion that communicates the mouth via a guiding curved surface may be formed.

さらに、上記第２実施例で仕切体４は、平板状の仕切壁６の周面に形成されたシール材８ｂが筐体１０’内において設けられた１条の側面段部１５及び底面段部１６と当接する位置に設置されていたが、筐体１０’内において、仕切壁の表裏側で既設水道管１内の流体を止水できれば仕切壁は必ずしも平板である必要はない。例えば平面視略直角状に形成された仕切壁の周面にシール材を配設して、筐体１０’内において平面視略直角状に交差して設けられた２条の段部と当接する位置に設置可能としてもよい。 Further, in the second embodiment, the partition body 4 includes a single side step 15 and a bottom step provided with a sealing member 8b formed in the peripheral surface of the flat partition wall 6 in the housing 10 '. However, the partition wall does not necessarily have to be a flat plate if the fluid in the existing water pipe 1 can be stopped on the front and back sides of the partition wall in the casing 10 ′. For example, a sealing material is disposed on the peripheral surface of the partition wall formed in a substantially right-angle shape in plan view, and comes into contact with two stepped portions provided so as to intersect in a substantially right-angle shape in plan view in the housing 10 ′. It may be possible to install 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. （ａ）は、仕切体４の側面と一部断面を示した図であり、（ｂ）は仕切体４の正面図である。(A) is the figure which showed the side surface and partial cross section of the partition body 4, (b) is a front view of the partition body 4. FIG. （ａ）は、不断水流路形成装置の全体像を示す平面図であり、（ｂ）は、同じく仕切体４が設置された位置を示した平面図である。(A) is a top view which shows the whole image of a continuous water flow path formation apparatus, (b) is the top view which showed the position where the partition body 4 was similarly installed. 筐体１０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１５、１６を示した、筐体１０のｆ−ｆ断面図である。FIG. 5 is a cross-sectional view of the housing 10 taken along the line ff showing the step portions 15 and 16 provided integrally and continuously on the inner surface and the inner bottom surface of the housing 10. （ａ）は、仕切体４が、筐体１０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、筐体１０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、筐体１０の縦断面図である。(A) is the longitudinal cross-sectional view of the housing | casing 10 in the middle point in which the partition body 4 descend | falls toward the installation position from the upper direction of the housing | casing 10, (b) is the partition body 4 in an installation position. It is a longitudinal cross-sectional view of the housing | casing 10 in the installed point. 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４（ａ）のａ−ａ及びｂ−ｂ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。It is the aa and bb expanded sectional view of Fig.4 (a) which showed the butt | matching part which joins the upper housing | casing 11 divided into upper and lower parts and the lower housing | casing 12 by welding, (a) is welding processing It is the expanded sectional view which showed the front butt | matching part, (b) is the expanded sectional view which showed the butt | matching part after welding processing, (c) It is the expanded sectional view which showed the butt | matching part after grinding | polishing process. （ａ）は筐体１０内の案内片２０、２０’、２１、２１’を示した平面図であり、（ｂ）は（ａ）のｄ−ｄ断面図であり、（ｃ）は同じくｃ−ｃ断面図である。(A) is the top view which showed the guide pieces 20, 20 ', 21, and 21' in the housing | casing 10, (b) is dd sectional drawing of (a), (c) is also c FIG. 仕切体４の筐体１０内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. 5 is a side cross-sectional view showing a steady pin 22 at an installation position in a housing 10 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３２を示した概略図である。It is the schematic which showed the cutter 32 for a piercing | punching 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３４を示した概略図である。It is the schematic which showed the insertion machine 34 which installs the partition body 4 inside 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６（ｂ）のｅ−ｅ断面図である。It is ee sectional drawing of FIG.6 (b) in the state in which the partition body 4 was installed in the indefinite water flow path formation apparatus 2. FIG. （ａ）は、本発明の第２実施形態における、不断水流路形成装置２’の全体像を示す斜視図であり、（ｂ）は同じく不断水流路形成装置２’の平面図である。(A) is a perspective view which shows the whole image of the continuous water flow path formation apparatus 2 'in 2nd Embodiment of this invention, (b) is a top view of the continuous water flow path formation apparatus 2' similarly. 仕切体の変形例を示した斜視図である。It is the perspective view which showed the modification of the partition.

符号の説明Explanation of symbols

１既設水道管
１ａ切断面
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仕切壁
７連通管
７ａ連通口（既設水道管側）
７ｂ連通口（新設水道管側）
８ｂシール材（仕切壁周面）
８１ｂシール材（仕切壁側面）
８２ｂシール材（仕切壁底面）
９ａ連通管支持部材
９ｂ底板
１０筐体
１１上部筐体
１２下部筐体
１５側面段部
１６底面段部
１６’ 底面段部（上面勾配）
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）
２２振れ止めピン
２３固定プラグねじ
２５連通路
３２穿孔用カッタ
Ａ側方開口部（既設水道管上流側）
Ｂ側方開口部（新設水道管側）
Ｅ特定エリア
DESCRIPTION OF SYMBOLS 1 Existing water pipe 1a Cut surface 2 Unbreakable water flow path formation apparatus 3 New water pipe 4 Partition 5 Upper cover part 6 Partition wall 7 Communication pipe 7a Communication port (existing water pipe side)
7b Communication port (new water pipe side)
8b Seal material (partition wall peripheral surface)
81b Sealing material (partition wall side)
82b Sealing material (bottom of partition wall)
9a Communication pipe support member 9b Bottom plate 10 Housing 11 Upper housing 12 Lower housing 15 Side step 16 Bottom step 16 'Bottom step (upper surface gradient)
18 Groove part 19 Step part (for upper cover part)
20 Upper guide piece (front side)
21 Upper guide piece (back side)
22 Stabilizing pin 23 Fixed plug screw 25 Communication path 32 Drilling cutter A Side opening (upstream side of existing water pipe)
B Side opening (new water pipe side)
E Specific area

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、筐体内部に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壁と、引導曲面を有する流体案内部と、前記仕切壁の上端部と一体的に連接される上蓋部とからなり、前記仕切壁の周縁面と、前記上蓋部の周縁面とにシール材が備えられており、前記シール材が前記筐体の内側面と水密的に圧接するように形成され、前記仕切体が前記筐体内に設置された位置において、前記上蓋部の下面と近接もしくは当接する振れ止めピンが前記筐体の内側面に固着され、さらに前記上蓋部を上方から下方に押圧できる固定プラグねじが前記筐体の外側から筐体内側に突設可能に配設されており、前記筐体の内側面における、前記仕切壁の両側面に備えたシール材の当接する当接面が、互いに異なる前記他の流路を形成するように、前記筐体の内側面に肉厚の側面段部として少なくとも２対形成されるとともに、各対の前記側面段部の両わきには、前記仕切壁を表裏両側から挟持する表裏１対の案内片がそれぞれ形成されており、更に該案内片が上下に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平行に形成されているとともに、下部における表裏一対の案内片の上端部が、上方に拡開される切欠き部が成形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 that can secure at least three directions of flow paths, the existing fluid pipe is cut in an indefinite water state, a partition is installed inside the casing, and the other flow paths are opened. A continuous water flow path forming device for an existing fluid pipe to be formed,
The partition body includes a partition wall that blocks at least one flow path of fluid in the housing, a fluid guide portion having a guiding curved surface, and an upper lid portion that is integrally connected to an upper end portion of the partition wall, A sealing material is provided on a peripheral surface of the partition wall and a peripheral surface of the upper lid portion, the sealing material is formed so as to be in watertight pressure contact with an inner surface of the housing, and the partition body is the housing. At a position installed in the body, an anti-spin pin that is close to or in contact with the lower surface of the upper lid portion is fixed to the inner side surface of the housing, and a fixed plug screw that can press the upper lid portion downward from above is provided on the housing. The inner surface of the casing is arranged so as to protrude from the outside of the casing, and the contact surfaces with which the sealing material provided on both sides of the partition wall abuts are different from each other. On the inner surface of the housing to form a path At least two pairs of thick side stepped portions are formed, and on both sides of each pair of side stepped portions, a pair of front and back guide pieces that sandwich the partition wall from both front and back sides are formed, respectively. The guide piece is vertically divided into two, and a pair of front and back guide pieces in the upper part is formed in an upwardly tapered shape, a pair of front and back guide pieces in the lower part are formed in parallel, and a pair of front and back parts in the lower part are formed. A non-continuous water flow path forming device for an existing fluid pipe, characterized in that a notch that is expanded upward is formed on the upper end of the guide piece .