JP5348779B2 - Method and apparatus for removing piping branch member - Google Patents
Method and apparatus for removing piping branch member Download PDFInfo
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- JP5348779B2 JP5348779B2 JP2009266294A JP2009266294A JP5348779B2 JP 5348779 B2 JP5348779 B2 JP 5348779B2 JP 2009266294 A JP2009266294 A JP 2009266294A JP 2009266294 A JP2009266294 A JP 2009266294A JP 5348779 B2 JP5348779 B2 JP 5348779B2
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- 238000000034 method Methods 0.000 title claims abstract description 48
- 230000000630 rising effect Effects 0.000 claims abstract description 75
- 238000005520 cutting process Methods 0.000 claims abstract description 69
- 230000002093 peripheral effect Effects 0.000 claims abstract description 45
- 239000011347 resin Substances 0.000 claims abstract description 12
- 229920005989 resin Polymers 0.000 claims abstract description 12
- 239000000155 melt Substances 0.000 claims description 9
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 238000010309 melting process Methods 0.000 abstract 1
- 230000004927 fusion Effects 0.000 description 17
- 238000003780 insertion Methods 0.000 description 12
- 230000037431 insertion Effects 0.000 description 12
- 238000010079 rubber tapping Methods 0.000 description 8
- 210000000078 claw Anatomy 0.000 description 6
- 241000269851 Sarda sarda Species 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Branch Pipes, Bends, And The Like (AREA)
Abstract
Description
本発明は、ガス配管などの導管において、各宅地内に分岐配管をするために設けられる樹脂製の配管分岐部材の撤去方法及び装置に関する。 The present invention relates to a method and an apparatus for removing a resin-made piping branch member provided for branch piping in each residential land in a conduit such as gas piping.
ガス配管は、道路下の導管から配管分岐部材を介して供給管が設けられ、この供給管が各宅地内の所定の場所に引き込まれている。
しかし、宅地内の建物の建て替えや、宅地の転用に際して、その供給管が不使用状態になる場合がある。その場合、供給管はとりあえず宅地内においてスクイズオフして一時切断し、その端末にＥＦキャップ等を融着することで閉塞処理してガス漏洩防止され、いわゆる未整理供給管として残されている。
The gas pipe is provided with a supply pipe from a pipe under the road via a pipe branching member, and this supply pipe is drawn into a predetermined place in each residential land.
However, when rebuilding a building in a residential land or diverting a residential land, the supply pipe may become unusable. In that case, the supply pipe is temporarily squeezed off in the residential land and temporarily cut, and an EF cap or the like is fused to the terminal to prevent gas leakage and remain as a so-called unorganized supply pipe.
しかし、この未整理供給管は、導管と接続されており活管状態であるため、長期間埋設状態にあるとガス漏れを生じるおそれがある。また、他工事で引っ掛ける危険性もある。
そこで、このような未整理供給管を撤去する要請があり、以下のような提案がなされている。
However, since this unorganized supply pipe is connected to the conduit and is in an active pipe state, there is a possibility that gas leakage will occur if it is buried for a long period of time. There is also a risk of getting caught in other construction.
Therefore, there is a request to remove such unsorted supply pipes, and the following proposals have been made.
内蔵タッピング工具（カッター）を有するチーを介して元管に接続された樹脂製分岐管を撤去する方法であって、前記カッターを前記元管の側壁のタッピング孔に挿入し、該カッターの上側で前記チーを切断し、該チーの切断部に封止作業バッグを取り付け、該バッグ中において、前記タッピング孔から前記カッターを取り外した後、該タッピング孔に仮栓を取り付け、該仮栓の外側から樹脂製の本閉止栓を回転させながら当て、該本閉止栓と前記タッピング孔端部との間に生じる摩擦熱で、本閉止栓を前記チーの切断部に融着することを特徴とする樹脂製分岐管の撤去方法（特許文献１参照）。 A method of removing a resin branch pipe connected to a main pipe via a Qi having a built-in tapping tool (cutter), wherein the cutter is inserted into a tapping hole on a side wall of the main pipe, and above the cutter Cutting the Qi, attaching a sealing work bag to the cutting part of the Qi, removing the cutter from the tapping hole in the bag, attaching a temporary stopper to the tapping hole, and from the outside of the temporary stopper A resin, characterized in that the main stopper plug made of resin is applied while rotating, and the main stopper plug is fused to the cutting portion of the Qi by frictional heat generated between the main stopper plug and the end of the tapping hole. A method for removing the branch pipe (see Patent Document 1).
特許文献１において、本閉止栓をタッピング孔端部に融着するに際し、本閉止栓をタッピング孔端部に回転させながら当て、該本閉止栓と前記タッピング孔端部との間に生じる摩擦熱で、本閉止栓をチーの切断部に融着するというものである。
しかし、本閉止栓とタッピング孔端部とを回転によって融着させる方法では、両者間を全周に亘って均一に溶融して確実に融着できるとは限らない。
In Patent Document 1, when the main stopper plug is fused to the end of the tapping hole, the friction stopper generates a frictional heat generated between the main stopper plug and the end of the tapping hole. Then, this closure plug is fused to the cutting part of Qi.
However, in the method in which the main stopper plug and the tapping hole end portion are fused together by rotation, the two portions are not always melted uniformly over the entire circumference, so that it is not always possible to fuse them securely.
本発明は係る課題を解決するためになされたものであり、立上り管部の切断後の本栓の融着を確実に行なうことができ、ガス漏れの心配のない配管分岐部材の撤去方法を提供することを目的としている。 The present invention has been made to solve the above-described problems, and provides a method for removing a pipe branching member that can reliably perform the fusion of the main plug after cutting the rising pipe portion and does not cause gas leakage. The purpose is to do.
（１）本発明に係る配管分岐部材の撤去方法は、導管に固定されたサドル部から立ち上がる立上り管部と該立上り管部から分岐して設けられた分岐管部とを備えてなる樹脂製の配管分岐部材を撤去する方法であって、円盤状の仮栓を前記立上り管部内に挿入する仮栓設置工程と、前記立上り管部を前記サドル部近傍にて除去する立上り管部除去工程と、円盤状で樹脂製の蓋部材の外周面及び前記除去によって現れた立上り管部の内周面とを加熱して溶融する溶融工程と、前記蓋部材を前記立上り管部に挿入して両者を接着する接着工程とを備えたことを特徴とするものである。 (1) A method for removing a pipe branching member according to the present invention is a resin-made product comprising a rising pipe part rising from a saddle part fixed to a conduit and a branch pipe part branched from the rising pipe part. A method of removing a pipe branching member, a temporary stopper installation step of inserting a disk-shaped temporary stopper into the rising pipe portion, a rising pipe portion removing step of removing the rising pipe portion in the vicinity of the saddle portion, A melting step of heating and melting the outer peripheral surface of the disc-shaped resin lid member and the inner peripheral surface of the riser pipe part that appears by the removal, and inserting the lid member into the riser pipe part and bonding them together And an adhering step.
（２）また、上記（１）に記載のものであって、前記立上り管部除去工程は、立上り管部の上端面と内周面の両方を切削する工程を含むことを特徴とするものである。 (2) Moreover, it is a thing as described in said (1), Comprising: The said riser pipe part removal process includes the process of cutting both the upper end surface and inner peripheral surface of a riser pipe part, It is characterized by the above-mentioned. is there.
（３）また、上記（１）又は（２）に記載のものであって、前記接着工程において、前記蓋部材を前記立上り管部に挿入したときに、前記仮栓に、前記蓋部材側と前記導管側の空間を連通させる連通路が形成されるようにしたことを特徴とするものである。 (3) Further, in the above (1) or (2), in the bonding step, when the lid member is inserted into the rising pipe portion, the temporary stopper is connected to the lid member side. A communication path that communicates the space on the conduit side is formed.
（４）また、上記（１）乃至（３）のいずれかに記載の配管分岐部材の撤去方法に用いる配管分岐部材の撤去装置であって、
ガイド支柱を備えると共に前記導管に着脱自在に装着される本体部と、前記ガイド支柱にガイドされて前記立上り管の上端面及び内周面を切削する切削具と、前記ガイド支柱に支持されて前記蓋部材を保持する蓋部材保持具と、前記ガイド支柱に支持されて前記蓋部材の外周面と前記立上り管の内周面を加熱して溶融するヒータ具とを備えたことを特徴とするものである。
(4) A pipe branching member removal device used in the pipe branching member removal method according to any one of (1) to (3) above,
A main body provided with a guide column and detachably attached to the conduit, a cutting tool guided by the guide column to cut the upper end surface and the inner peripheral surface of the riser, and supported by the guide column and the A lid member holder that holds the lid member, and a heater tool that is supported by the guide column and that heats and melts the outer circumferential surface of the lid member and the inner circumferential surface of the riser pipe. It is.
（５）また、上記（４）に記載の配管分岐部材の撤去装置において、前記立上り管部の軸芯に対する前記本体部の装着位置を決める芯出し具を備えてなり、該芯出し具は、前記立上り管に挿入可能な凸部と、該凸部の側方に延出するアーム部と、該アーム部に設けられて前記ガイド支柱に挿入可能な貫通孔を有し、該貫通孔を前記ガイド支柱に挿入すると共に前記凸部を前記立上り管部に挿入することによって前記立上り管の軸芯に対する前記本体部の装着位置を位置決めするようにしたことを特徴とするものである。 (5) Further, in the pipe branching member removal apparatus according to (4), the pipe branching member removal apparatus includes a centering tool that determines a mounting position of the main body part with respect to the axial core of the riser pipe part. A protrusion that can be inserted into the riser, an arm that extends to the side of the protrusion, and a through-hole that is provided in the arm and can be inserted into the guide column. The mounting position of the main body portion with respect to the axial center of the riser tube is positioned by inserting the convex portion into the riser tube portion while being inserted into the guide column.
（６）また、上記（４）又は（５）に記載のものにおいて、前記切削具は、切削刃が形成された切削台座と、該切削台座を切削対象となる立上り管側に常時付勢する付勢手段と、切削具を前記本体部に係止させる係止部材とを備えてなることを特徴とするものである。 (6) Further, in the above-described (4) or (5), the cutting tool constantly urges the cutting base on which the cutting blade is formed, and the rising pipe side to be cut, on the cutting base. An urging means and a locking member for locking the cutting tool to the main body are provided.
（７）また、上記（４）乃至（６）のいずれかに記載のものにおいて、前記ヒータ具は、前記蓋部材の外周面を加熱する凹陥部と、前記立上り管の内周面を加熱する凸部とを備えてなることを特徴とするものである。 (7) Moreover, in the thing in any one of said (4) thru | or (6), the said heater tool heats the recessed part which heats the outer peripheral surface of the said cover member, and the inner peripheral surface of the said riser pipe | tube. And a convex portion.
本発明においては、円盤状で樹脂製の蓋部材の外周面と、除去によって現れた立上り管部の内周面とを加熱して溶融する溶融工程と、前記蓋部材を前記立上り管部に挿入して両者を接着する接着工程とを備えたことにより、蓋部材の外周面と立上り管部の内周面の両方を確実に溶融して接着できるので、蓋部材の融着をより確実なものにでき、ひいてはガス漏れを確実に防止できる。 In the present invention, the outer peripheral surface of the disc-shaped resin lid member and the inner peripheral surface of the riser pipe part that appears by removal are heated and melted, and the lid member is inserted into the riser pipe part And the bonding step of bonding the two members together, the outer peripheral surface of the lid member and the inner peripheral surface of the rising pipe portion can be reliably melted and bonded, so that the lid member can be more securely fused. As a result, gas leakage can be surely prevented.
［実施の形態１］
本実施の形態に係る配管分岐部材３の撤去方法を図１に基づいて説明する。
撤去前の状態は、図１（ａ）に示すように、導管１の表面にいわゆるサービスチーと呼ばれる配管分岐部材３が設置され、この配管分岐部材３を介して例えば各宅地内の所定箇所に供給管５が配置される。
このような配管分岐部材３は、導管１の表面に融着されたサドル部７と、サドル部７から立ち上がる立上り管部９と、立上り管部９の端部に設置されたチーキャップ１１と、立上り管部９から直交方向に延出する分岐管部１３とを備えている。そして、図示していないが。立上り管部９内には配管分岐部材３の設置時に導管１に穿孔するために使用したカッター１７が残存している。
[Embodiment 1]
A method for removing the pipe branching member 3 according to the present embodiment will be described with reference to FIG.
As shown in FIG. 1 (a), the state before removal is such that a pipe branching member 3 called a service chi is installed on the surface of the conduit 1, and the pipe branching member 3 is used, for example, at a predetermined location in each residential land. A supply pipe 5 is arranged.
Such a pipe branching member 3 includes a saddle part 7 fused to the surface of the conduit 1, a rising pipe part 9 rising from the saddle part 7, a cheek cap 11 installed at an end of the rising pipe part 9, And a branch pipe part 13 extending from the rising pipe part 9 in the orthogonal direction. And although not shown. The cutter 17 used for drilling the conduit 1 when the pipe branching member 3 is installed remains in the rising pipe portion 9.
図１（ａ）に示したような配管分岐部材３を撤去するには、まず図１（ｂ）に示すように、撤去の対象となる配管分岐部材３を覆うようにノーブローガスバック１５を取り付け、ノーブローガスバック１５内においてチーキャップ１１を取り外し、立上り管部９内のカッター１７を取り外す。
次に図１（ｃ）に示すように、円盤状の仮栓１９を立上り管部９の下方に挿入する。仮栓１９を挿入することによって、導管１からのガス漏れをほぼ防止できるので、図１（ｄ）に示すように、この状態でノーブローガスバック１５を取り外し。図１（ｅ）に示すように、立上り管部９から直交方向に延出する分岐管部１３を根元付近から切断する。この分岐管の切断を行わず、立上り管部９と同時に切削してもよい。
In order to remove the pipe branching member 3 as shown in FIG. 1 (a), first, as shown in FIG. 1 (b), a no blow gas back 15 is provided so as to cover the pipe branching member 3 to be removed. Attach and remove the cheek cap 11 in the no-blow gas bag 15 and remove the cutter 17 in the rising pipe portion 9.
Next, as shown in FIG. 1 (c), a disk-shaped temporary stopper 19 is inserted below the rising pipe portion 9. Since the gas leakage from the conduit 1 can be substantially prevented by inserting the temporary stopper 19, the no-blow gas bag 15 is removed in this state as shown in FIG. 1 (d). As shown in FIG.1 (e), the branch pipe part 13 extended in the orthogonal direction from the riser pipe part 9 is cut | disconnected from the root vicinity. The branch pipe may be cut simultaneously with the rising pipe portion 9 without being cut.
次に図１（ｆ）に示すように、立上り管部９を切断する。切断する位置は分岐管部１３の基部の下面位置き近傍である。本実施の形態では、蓋部材２３を立上り管部９の内部に挿入するので、挿入代を残すように切断する。
切断方法は特に限定されないが、例えば鋸切りのような一般工具を使用してもよいし、あるいは押切りのような特殊な工具により一気にスパッと切断してもよい。また、立上り管部９と分岐管部１３を除去する方法は、立上り管部９を切断することに限定されず、立上り管部９の上端側から下方に向かって順次切削できるようなものでもよい。
Next, as shown in FIG.1 (f), the riser pipe part 9 is cut | disconnected. The cutting position is near the position of the lower surface of the base portion of the branch pipe portion 13. In the present embodiment, since the lid member 23 is inserted into the rising pipe portion 9, it is cut so as to leave an insertion allowance.
The cutting method is not particularly limited. For example, a general tool such as sawing may be used, or the cutting may be performed with a special tool such as press cutting. Moreover, the method of removing the rising pipe part 9 and the branch pipe part 13 is not limited to cutting the rising pipe part 9, and may be one that can be sequentially cut downward from the upper end side of the rising pipe part 9. .
切削工具２１としては、例えば図１（ｆ）に示すように、立上り管部９を覆うような筒体の中に回転可能な回転刃を設け、この回転刃を回転させることによって、あたかも鰹節を削るように立上り管部９を切削できるものでもよい。回転刃の回転は、ラチェットなどの工具を用いて手作業で行ってもよいし、モーターを使用してもよい。
また、鋸切りのような一般工具あるいは押切りのような特殊な工具でおおまかな切断後、立上り管部９の上端側から下方に向かって順次切削できる回転可能な回転刃などを用いて最終的な切削切断を行ってもよい。
上下方向の切削に加えて、融着に備えて立上り管部９の内面を切削して、その内径が挿入される蓋部材２３の外径に合うようにするのが望ましい。
As the cutting tool 21, for example, as shown in FIG. 1 (f), a rotatable blade is provided in a cylindrical body that covers the riser tube portion 9, and by rotating the rotary blade, it is as if the bonito is made. What can cut the riser part 9 so that it may cut may be used. The rotation of the rotary blade may be performed manually using a tool such as a ratchet, or a motor may be used.
In addition, after a rough cutting with a general tool such as sawing or a special tool such as press cutting, a final rotation is made using a rotatable rotary blade or the like that can be sequentially cut downward from the upper end side of the rising pipe portion 9. Cutting and cutting may be performed.
In addition to the cutting in the vertical direction, it is desirable to cut the inner surface of the riser portion 9 in preparation for fusion so that the inner diameter thereof matches the outer diameter of the lid member 23 to be inserted.
次に、切断によって現われた立上り管部９の内周面と蓋部材２３の外周面の両方を加熱して溶融させ、図１（ｇ）に示すように、蓋部材２３を立上り管部９内面に融着する。
立上り管部９の内面と円盤状の蓋部材２３の外周面を同時に加熱し、両面を溶融させて融着を行うことにより、強固で確実な融着となる。
立上り管部９の内面と円盤状の蓋部材２３の外周面を融着するため、図１（ｆ）で示したように立上り管部９を切削する場合の端面は、仮栓１９の上端面よりも上に、蓋部材２３の厚み以上を残すようにするのが好ましい。
また、立上り管部９内周面の蓋部材２３の外周面と融着する部分は、回転可能な回転刃で切削することにより、寸法精度が得られ、融着面も綺麗な面が得られるため、融着に好適である。
Next, both the inner peripheral surface of the riser tube portion 9 and the outer peripheral surface of the lid member 23 that appear by cutting are heated and melted, and as shown in FIG. To fuse.
By simultaneously heating the inner surface of the riser portion 9 and the outer peripheral surface of the disc-shaped lid member 23 and fusing both surfaces, a strong and reliable fusion can be achieved.
In order to fuse the inner surface of the rising pipe portion 9 and the outer peripheral surface of the disc-shaped lid member 23, the end face when the rising pipe portion 9 is cut as shown in FIG. Further, it is preferable to leave more than the thickness of the lid member 23 above.
In addition, the portion of the inner peripheral surface of the rising pipe portion 9 that is to be fused with the outer peripheral surface of the lid member 23 is cut with a rotatable rotary blade, so that dimensional accuracy can be obtained and a clean surface can be obtained. Therefore, it is suitable for fusion.
なお、蓋部材２３を立上り管部９内に挿入する際に、蓋部材２３、仮栓１９及び立上り管部９内面とで囲まれた空間が閉鎖空間となるため、当該空間内の空気が圧縮されて蓋部材２３を押し戻すような作用を及ぼすことが考えられる。そこで、圧縮された空気の融着への影響をなくすため、仮栓１９に融着時に空気を逃がすような機能をもたせるのが好ましい。仮栓１９に持たせるこのような機能の具体例としては、実施の形態２で説明する。 Note that when the lid member 23 is inserted into the riser tube portion 9, the space surrounded by the lid member 23, the temporary stopper 19 and the inner surface of the riser tube portion 9 becomes a closed space, so that the air in the space is compressed. It can be considered that the lid member 23 is pushed back. Therefore, in order to eliminate the influence of the compressed air on the fusion, it is preferable to provide the temporary stopper 19 with a function of allowing air to escape during the fusion. A specific example of such a function provided to the temporary stopper 19 will be described in the second embodiment.
本実施の形態においては、立上り管部９の内面と円盤状の蓋部材２３の外周面を同時に加熱し、両面を溶融させて融着を行うようにしたので、強固で確実な融着が得られ、それ故にガス漏れを確実に防止できる。また、蓋部材２３を立上り管部９に挿入して蓋部材２３の側面と立上り管部９の内周面を融着させるようにしているので、仮に融着位置がずれたような場合には、融着されている蓋部材２３を切削して開口部を形成し、新たな蓋部材を挿入するようにすることでやり直しが可能である。この点、先行文献１の方式や、それ以外の例えば立上り管部の上端面と蓋部材の底面とを融着させるような方式では、やり直しができないので、本発明はこの点でも優れている。 In the present embodiment, the inner surface of the riser portion 9 and the outer peripheral surface of the disc-shaped lid member 23 are heated at the same time, and both surfaces are melted to perform fusion, so that a strong and reliable fusion is obtained. Therefore, gas leakage can be surely prevented. Further, since the lid member 23 is inserted into the riser tube portion 9 so that the side surface of the lid member 23 and the inner peripheral surface of the riser tube portion 9 are fused, It is possible to redo by cutting the fused lid member 23 to form an opening and inserting a new lid member. In this respect, the method of the prior art document 1 and other methods such as the method of fusing the upper end surface of the rising pipe portion and the bottom surface of the lid member cannot be redone, so the present invention is excellent in this respect.
［実施の形態２］
次に、上記の配管分岐部材３の撤去方法に用いる配管分岐部材３の撤去装置について、図２〜図９に基づいて説明する。
本実施の形態に係る配管分岐部材３の撤去装置は、導管１に設置されて後述の各器具を保持する本体部２５と、本体部２５（図２参照）を導管１の所定位置にセットする際の芯出し具として機能すると共に融着の際に蓋部材２３を保持する蓋部材保持具として機能する芯出し具兼蓋部材保持具５１（図３、４参照）と、立上り管部９の上端面及び内周面を切削する切削具６１（図５〜図７参照）と、蓋部材２３の外周面及び立上り管部９の内周面を溶融して融着する融着具７９（図８、９参照）とを備えている。
以下、各部及び各具を詳細に説明する。
[Embodiment 2]
Next, the pipe branching member 3 removal device used in the pipe branching member 3 removal method will be described with reference to FIGS.
The apparatus for removing the pipe branching member 3 according to the present embodiment sets a main body 25 that is installed in the conduit 1 and holds each appliance described later, and a main body 25 (see FIG. 2) at a predetermined position of the conduit 1. A centering tool / lid member holder 51 (see FIGS. 3 and 4) that functions as a centering tool and a lid member holder that holds the lid member 23 at the time of fusion; A cutting tool 61 (see FIGS. 5 to 7) that cuts the upper end surface and the inner peripheral surface, and a welding tool 79 (see FIG. 5) that melts and melts the outer peripheral surface of the lid member 23 and the inner peripheral surface of the rising pipe portion 9. 8 and 9).
Hereinafter, each part and each tool will be described in detail.
＜本体部＞
本体部２５は、図２に示すように、左右一対のベース部２７と、左右のベース部２７を所定の間隔を離して連結する連結バー２９と、ベース部２７を導管１に装着するための装着部材３１と、各ベース部２７の上面に立設されたガイド支柱３３とを備えている。
ベース部２７は、略直方体形状をしており、下面には導管１の上面にベース部２７を安定的に載置するための凹部３５が形成されている。ベース部２７の長手方向の両端には溝部３７が形成されており、該溝部３７には装着部材３１を構成する後述のチェーン３９の端部が挿入されている。
ベース部２７の外縁中央部には、後述する切削具６１、ヒータ具８１の係止爪７７が係止する係止部３８が形成されている。
<Main body>
As shown in FIG. 2, the main body portion 25 includes a pair of left and right base portions 27, a connecting bar 29 that connects the left and right base portions 27 at a predetermined interval, and a base portion 27 for attaching the base portion 27 to the conduit 1. A mounting member 31 and a guide column 33 erected on the upper surface of each base portion 27 are provided.
The base portion 27 has a substantially rectangular parallelepiped shape, and a concave portion 35 for stably mounting the base portion 27 on the upper surface of the conduit 1 is formed on the lower surface. Groove portions 37 are formed at both ends in the longitudinal direction of the base portion 27, and end portions of a later-described chain 39 constituting the mounting member 31 are inserted into the groove portions 37.
At the center of the outer edge of the base portion 27, there is formed a locking portion 38 for locking a cutting tool 61, which will be described later, and a locking claw 77 of the heater tool 81.
連結バー２９は、一対のベース部２７を連結するものであり、本体部２５を導管１に装着した状態で立上り管部９を挟むように所定間隔離した位置に各２段設置されている。連結バー２９は断面が六角形になっており、上面が平面になるように設置されている。連結バー２９の上面は後述する鋸９９で立上り管部９を切断するときのガイドとして機能する。そのため、連結バー２９の上面位置が立上り管部９の切断面の位置を決めることになる。換言すれば、立上り管部９の切断面の位置は、連結バー２９の上面位置によって決めることができる。それ故、導管１の外径に応じてベース部２７の形状（厚みや大きさ）大きさを変えることによって、立上り管部９の切断面の位置を常に同じ位置にすることも可能である。 The connecting bar 29 connects the pair of base portions 27 and is installed in two stages at positions separated by a predetermined distance so as to sandwich the riser tube portion 9 with the main body portion 25 attached to the conduit 1. The connecting bar 29 has a hexagonal cross section and is installed so that the upper surface is a flat surface. The upper surface of the connecting bar 29 functions as a guide when the rising pipe portion 9 is cut by a saw 99 described later. Therefore, the upper surface position of the connecting bar 29 determines the position of the cut surface of the rising pipe portion 9. In other words, the position of the cut surface of the rising pipe portion 9 can be determined by the upper surface position of the connecting bar 29. Therefore, by changing the shape (thickness and size) of the base portion 27 in accordance with the outer diameter of the conduit 1, the position of the cut surface of the rising pipe portion 9 can be always set to the same position.
装着部材３１は、図２に示されるように、導管１に巻きつくように設置されるチェーン３９と、該チェーン３９の一端側に設置されて本体部２５に係止する端部材４１と、チェーン３９の他端に設けられてチェーン３９を張設するクランプ部材４３とを備えている。クランプ部材４３は、クランプバー４４を操作することでチェーン３９を張設して、本体部２５を導管１にしっかりと固定する。
ガイド支柱３３は、各ベース部２７の中央部に立設されている。ガイド支柱３３の上端部には、ガイド支柱３３の周面を一周するように細い周溝４５が形成されている。この周溝４５は後述する芯出し具兼蓋部材保持具５１のアーム部５５に設けられたプランジャー軸６６（図３、図４参照）に係止して、芯出し具兼蓋部材保持具５１を所定位置に保持する機能を有する。
As shown in FIG. 2, the mounting member 31 includes a chain 39 that is installed so as to wrap around the conduit 1, an end member 41 that is installed on one end side of the chain 39 and engages with the main body 25, and a chain And a clamp member 43 which is provided at the other end of 39 and stretches the chain 39. The clamp member 43 stretches the chain 39 by operating the clamp bar 44 and firmly fixes the main body 25 to the conduit 1.
The guide column 33 is erected at the center of each base portion 27. A thin circumferential groove 45 is formed at the upper end of the guide column 33 so as to go around the circumferential surface of the guide column 33. The circumferential groove 45 is engaged with a plunger shaft 66 (see FIGS. 3 and 4) provided on an arm portion 55 of a centering tool / lid member holder 51, which will be described later. It has a function of holding 51 in a predetermined position.
＜芯出し具兼蓋部材保持具＞
芯出し具兼蓋部材保持具５１は、図３、図４に示されるように、矩形板部５３と、矩形板部５３の両側に延出して設けられたアーム部５５と、アーム部５５の先端に設けられたハンドル部５７を備えている。矩形板部５３の中央には挿入孔５９が設けられると共に挿入孔５９を拡縮するクランプレバー６０が設けられている。挿入孔５９は、芯出し具兼蓋部材保持具５１が蓋部材保持具８３として機能する際に、蓋部材２３を先端に保持した保持棒６２が挿入される。挿入孔５９に挿入された保持棒６２はクランプレバー６０を操作することで挿入孔５９にクランプされて芯出し具兼蓋部材保持具５１に保持される。
矩形板部５３の下面側は、図４に示すように、ドーナツ状の凹陥部６３が形成されると共に凹陥部６３の中央部にはドーナツ状の凸部６４が形成されている。凸部６４の外周面は、下方に向かって縮径するテーパ面になっている。凸部６４をテーパ面にしたのは、芯出し具兼蓋部材保持具５１が芯出し具として機能する際に、凸部６４が立上り管部９に容易に挿入されようにするためである。
アーム部５５には、ガイド支柱３３に挿入するための貫通孔６５及びガイド支柱３３に形成された周溝４５に係止するプランジャー軸６６が設けられている。
<Centering tool and lid member holder>
As shown in FIGS. 3 and 4, the centering / lid member holder 51 includes a rectangular plate portion 53, arm portions 55 provided on both sides of the rectangular plate portion 53, and arm portions 55. A handle portion 57 provided at the tip is provided. An insertion hole 59 is provided at the center of the rectangular plate portion 53, and a clamp lever 60 that expands and contracts the insertion hole 59 is provided. When the centering / lid member holder 51 functions as the lid member holder 83, the insertion hole 59 is inserted with the holding rod 62 holding the lid member 23 at the tip. The holding rod 62 inserted into the insertion hole 59 is clamped to the insertion hole 59 by operating the clamp lever 60 and is held by the centering tool / lid member holder 51.
As shown in FIG. 4, a doughnut-shaped concave portion 63 is formed on the lower surface side of the rectangular plate portion 53, and a donut-shaped convex portion 64 is formed at the center of the concave portion 63. The outer peripheral surface of the convex portion 64 is a tapered surface that decreases in diameter downward. The convex portion 64 has a tapered surface so that the convex portion 64 can be easily inserted into the rising pipe portion 9 when the centering tool / lid member holder 51 functions as a centering tool.
The arm portion 55 is provided with a through hole 65 for insertion into the guide column 33 and a plunger shaft 66 that engages with the circumferential groove 45 formed in the guide column 33.
＜切削具＞
切削具６１は、図５〜図７に示されるように、円筒状の切削ハウジング６７と、切削ハウジング６７の両側に延出して設けられたアーム部５５と、アーム部５５の先端に設けられたハンドル部５７を備えている。アーム部５５には、ガイド支柱３３に挿入するための貫通孔６５が設けられている。なお、アーム部５５、ハンドル部５７、貫通孔６５は芯出し具兼蓋部材保持具５１に設けられたものと同じなので同一の符号を付してある。この点は後述の融着具７９においても同様である。
<Cutting tool>
As shown in FIGS. 5 to 7, the cutting tool 61 is provided with a cylindrical cutting housing 67, an arm portion 55 provided to extend on both sides of the cutting housing 67, and a tip of the arm portion 55. A handle portion 57 is provided. The arm portion 55 is provided with a through hole 65 for insertion into the guide column 33. In addition, since the arm part 55, the handle | steering-wheel part 57, and the through-hole 65 are the same as what was provided in the centering tool and cover member holder 51, the same code | symbol is attached | subjected. This also applies to the fusion tool 79 described later.
切削ハウジング６７には、下方に向けて付勢された刃物ベース６８が設置され、刃物ベース６８には切削刃６９が形成された切削台座７０が固定されている。刃物ベース６８はバネ７１によって下方（切削対象となる立上り管部方向）に付勢されており、刃物ベース６８を例えば立上り管部９に押し付けることで内部にバネ７１を収容したガイド筒７３にガイドされて上方（図７中の矢印の方向）に移動可能になっている。したがって、刃物ベース６８を例えば立上り管部９に押し付けた状態で保持することで、刃物ベース６８をバネ力によって立上り管部９に所定の力で押し付けることができ、切削具６１による切削作業時に刃物ベース６８を被切削部材に人力で押し付ける必要がない。よって、例えば切削具６１を立上り管部９に対して横向きに配置したり、上向き配置したりして作業をするような場合には極めて便利である。
刃物ベース６８は、切削ハウジング６７の上部に延出したラチェット軸７５を回転することで、回転するように構成されている。
切削刃６９は立上り管部９の上端面及び上端内周面を切削できるようになっている。
アーム部５５の先端部には本体部２５の係止部３８に係止する係止爪７７が形成されている。
The cutting housing 67 is provided with a blade base 68 biased downward, and a cutting base 70 on which a cutting blade 69 is formed is fixed to the blade base 68. The blade base 68 is biased downward (in the direction of the rising pipe portion to be cut) by a spring 71, and is guided by a guide cylinder 73 that houses the spring 71 therein by pressing the blade base 68 against the rising pipe portion 9, for example. Thus, it is movable upward (in the direction of the arrow in FIG. 7). Therefore, by holding the blade base 68 in a state of being pressed against the riser tube portion 9, for example, the blade base 68 can be pressed against the riser tube portion 9 by a spring force with a predetermined force. There is no need to manually press the base 68 against the member to be cut. Therefore, for example, it is extremely convenient when the cutting tool 61 is disposed laterally with respect to the rising pipe portion 9 or is disposed upward.
The blade base 68 is configured to rotate by rotating a ratchet shaft 75 extending to the upper part of the cutting housing 67.
The cutting blade 69 can cut the upper end surface and the upper end inner peripheral surface of the rising pipe portion 9.
A locking claw 77 that locks to the locking portion 38 of the main body portion 25 is formed at the distal end portion of the arm portion 55.
＜融着具＞
融着具７９は、蓋部材２３の外周面及び立上り管部９の内周面を溶融して立上り管部９の端部に接着するものである。融着具７９は、図８及び図９に示されるように、立上り管部９の内周面、蓋部材２３の外周面を加熱して溶融させるヒータ具８１と、蓋部材２３を保持する蓋部材保持具８３とを備えて構成される。
蓋部材保持具８３は、前述した芯出し具兼蓋部材保持具５１と保持棒６２とによって構成され、図８に示されるように、蓋部材２３を保持した保持棒６２を挿入孔５９に挿入してクランプレバー６０を操作して挿入孔５９でクランプして保持する。保持棒６２の先端には雄ネジが設けられると共に蓋部材２３には該雄ネジが螺合する雌ネジが形成されており、保持棒６２の先端の雄ネジを蓋部材２３の雌ネジに螺合することで蓋部材２３を保持する。
なお、保持棒６２の端部には金属製のカバー部材８５が取り付けられており、保持棒６２に保持された蓋部材２３の一部を覆うようになっている。カバー部材８５は保持棒６２に保持された蓋部材２３を立上り管部９に挿入するときに立上り管部９の上端面に当接して蓋部材２３の挿入深さを規定する機能を有する。
<Fusing tool>
The fuser 79 melts the outer peripheral surface of the lid member 23 and the inner peripheral surface of the riser tube portion 9 and bonds them to the end portion of the riser tube portion 9. As shown in FIGS. 8 and 9, the fuser 79 includes a heater 81 that heats and melts the inner peripheral surface of the rising pipe portion 9 and the outer peripheral surface of the lid member 23, and a lid that holds the lid member 23. And a member holder 83.
The lid member holder 83 includes the centering / lid member holder 51 and the holding rod 62 described above, and the holding rod 62 holding the lid member 23 is inserted into the insertion hole 59 as shown in FIG. Then, the clamp lever 60 is operated to be clamped by the insertion hole 59 and held. A male screw is provided at the tip of the holding rod 62 and a female screw is formed on the lid member 23 to which the male screw is screwed. The male screw at the tip of the holding rod 62 is screwed into the female screw of the lid member 23. The lid member 23 is held by joining.
A metal cover member 85 is attached to the end of the holding bar 62 so as to cover a part of the lid member 23 held by the holding bar 62. The cover member 85 has a function of defining the insertion depth of the lid member 23 by contacting the upper end surface of the riser tube portion 9 when the lid member 23 held by the holding rod 62 is inserted into the riser tube portion 9.
ヒータ具８１は、図８及び図９に示すように、矩形状のヒータユニット８７と、ヒータユニット８７の両側に延出して設けられたアーム部５５と、アーム部５５の先端に設けられたハンドル部５７を備えている。アーム部５５には、ガイド支柱３３に側方から挿入可能な矩形状の切欠部８９が形成されている。また、アーム部５５の先端部には、切削具６１と同様に、本体部２５の係止部３８に係止する係止爪７７が形成されている。
ヒータユニット８７の上面側には、蓋部材２３の外径と略同一の径を有する円形の円形凹陥部９１が形成されており、この円形凹陥部９１に蓋部材２３が挿入され、蓋部材２３の外側面を加熱して溶融する。また、ヒータユニット８７の下面側には、図９に示すように、立上り管部９の内径とほぼ同一の外径を有する筒形凸部９３が形成されており、この筒形凸部９３が立上り管部９に挿入されてその内周面を溶融する。
ヒータユニット８７には図示しない電線が接続され、通電されることで加熱される。
As shown in FIGS. 8 and 9, the heater 81 includes a rectangular heater unit 87, an arm portion 55 provided to extend on both sides of the heater unit 87, and a handle provided at the tip of the arm portion 55. A portion 57 is provided. The arm portion 55 is formed with a rectangular cutout 89 that can be inserted into the guide column 33 from the side. Further, similarly to the cutting tool 61, a locking claw 77 that locks to the locking portion 38 of the main body portion 25 is formed at the distal end portion of the arm portion 55.
A circular circular recess 91 having a diameter substantially the same as the outer diameter of the lid member 23 is formed on the upper surface side of the heater unit 87. The lid member 23 is inserted into the circular recess 91, and the lid member 23. The outer surface of the is melted by heating. Further, as shown in FIG. 9, a cylindrical convex portion 93 having an outer diameter substantially the same as the inner diameter of the rising pipe portion 9 is formed on the lower surface side of the heater unit 87. The inner peripheral surface is melted by being inserted into the riser portion 9.
An electric wire (not shown) is connected to the heater unit 87 and is heated when energized.
次に、上記のように構成された配管分岐部材３の撤去装置を用いて配管分岐部材３を撤去する方法を、図１０〜図２６に基づいて説明する。
撤去の対象となる配管分岐部材３を覆うようにノーブローガスバック１５を取り付け、ノーブローガスバック１５内においてチーキャップ１１を取り外し、立上り管部９内のカッター１７を取り外す。
次に、図１０に示すように、円盤状の仮栓１９を、仮栓保持部材９５に保持させ、図１１に示すように、立上り管部９の下方に挿入する。仮栓１９を挿入することによって、導管１からのガス漏れをほぼ防止できるので、この状態でノーブローガスバック１５を取り外す。ノーブローガスパックを取り外した状態が図１２に示され、その断面が図１３に示されている。
仮栓１９は、図１３の拡大図に示すように、中央に芯棒９７が設置されると共に芯棒９７の先端部に弁体９８が設置されており、芯棒９７は上部を押すことで下方に移動し、芯棒９７が移動することで弁体９８も下方に移動し、仮栓１９を介して導管１と立上り管部９とが連通するようになっている。
Next, a method of removing the pipe branching member 3 using the pipe branching member 3 removing apparatus configured as described above will be described with reference to FIGS.
A no-blow gas bag 15 is attached so as to cover the pipe branching member 3 to be removed, the cheek cap 11 is removed in the no-blow gas bag 15, and the cutter 17 in the rising pipe portion 9 is removed.
Next, as shown in FIG. 10, the disk-shaped temporary stopper 19 is held by the temporary stopper holding member 95 and is inserted below the riser section 9 as shown in FIG. 11. Since the gas leakage from the conduit 1 can be substantially prevented by inserting the temporary stopper 19, the no-blow gas bag 15 is removed in this state. FIG. 12 shows a state where the no-blow gas pack is removed, and FIG. 13 shows a cross section thereof.
As shown in the enlarged view of FIG. 13, the temporary stopper 19 has a core rod 97 installed at the center and a valve body 98 installed at the tip of the core rod 97. When the core rod 97 is moved downward, the valve body 98 is also moved downward, so that the conduit 1 and the rising pipe portion 9 communicate with each other through the temporary stopper 19.
仮栓１９が設置されると、図１４に示すように、分岐管部１３を根元付近から鋸９９で切断する。分岐管部１３を切断すると、図１５に示すように、本体部２５のガイド支柱３３に芯出し具兼蓋部材保持具５１を設置して、本体部２５を導管１に装着する。この状態で、芯出し具兼蓋部材保持具５１の凸部６４を立上り管部９に挿入する。これによって、ガイド支柱３３の位置が立上り管部９を基準にして芯出しされることになる。この状態で、クランプレバーを倒すことで、本体部２５が導管１に対して正しい位置にしっかりと固定される。 When the temporary stopper 19 is installed, the branch pipe portion 13 is cut with a saw 99 from the vicinity of the root as shown in FIG. When the branch pipe portion 13 is cut, as shown in FIG. 15, the centering tool / lid member holder 51 is installed on the guide column 33 of the main body portion 25, and the main body portion 25 is attached to the conduit 1. In this state, the convex portion 64 of the centering tool / lid member holder 51 is inserted into the rising pipe portion 9. As a result, the position of the guide column 33 is centered with respect to the rising pipe portion 9. In this state, by tilting the clamp lever, the main body 25 is firmly fixed to the conduit 1 at the correct position.
芯出しが完了すると、芯出し具兼蓋部材保持具５１を取り外す（図１６参照）。次に、図１７に示すように、連結バー２９の上面をガイドとして鋸９９によって立上り管部９を切断する。このとき、連結バー２９の上面位置が所定の位置になっているので、立上り管部９は所定の高さを残して切断される。 When the centering is completed, the centering tool / lid member holder 51 is removed (see FIG. 16). Next, as shown in FIG. 17, the rising pipe portion 9 is cut by a saw 99 using the upper surface of the connecting bar 29 as a guide. At this time, since the upper surface position of the connecting bar 29 is a predetermined position, the rising pipe portion 9 is cut leaving a predetermined height.
立上り管部９が切断されると、図１８に示すように切削具６１をセットする。セットは、切削具６１のアーム部５５に設けられた貫通孔６５をガイド支柱３３に挿入することによって行う。なお、貫通孔６５とガイド支柱３３との間には若干の隙間（遊び）が設けられており、図１８に示すように、若干斜めになった状態で保持可能になっている。
次に、図１９に示すように、切削具６１をガイド支柱３３に沿って下方に移動し、図２０に示すように、係止爪７７を本体部２５の係止部３８に係止させる。このとき、切削具６１の切削台座７０が立上り管部９の上端面に押されて切削ハウジング６７内に収納された状態になる。このとき、切削台座７０はバネ７１によって立上り管部上端面に押し付けられた状態になっている。この状態で、図１９に示すように、ラチェット軸７５にラチェットレバー１０１を装着して回転させることで、切削台座７０が回転し、切削台座７０に形成された刃物によって、立上り管部９の上端面と内周面が切削される。
When the rising pipe portion 9 is cut, the cutting tool 61 is set as shown in FIG. The setting is performed by inserting a through hole 65 provided in the arm portion 55 of the cutting tool 61 into the guide column 33. Note that a slight gap (play) is provided between the through hole 65 and the guide column 33, and as shown in FIG. 18, it can be held in a slightly inclined state.
Next, as shown in FIG. 19, the cutting tool 61 is moved downward along the guide column 33, and the locking claw 77 is locked to the locking portion 38 of the main body portion 25 as shown in FIG. 20. At this time, the cutting pedestal 70 of the cutting tool 61 is pushed by the upper end surface of the rising pipe portion 9 and is stored in the cutting housing 67. At this time, the cutting pedestal 70 is pressed against the upper end surface of the rising pipe portion by the spring 71. In this state, as shown in FIG. 19, when the ratchet lever 101 is mounted on the ratchet shaft 75 and rotated, the cutting pedestal 70 rotates, and the cutting tool formed on the cutting pedestal 70 rotates the upper portion of the riser pipe portion 9. The end surface and the inner peripheral surface are cut.
次に、図２１に示すように、芯出し具兼蓋部材保持具５１に蓋部材２３を保持した蓋部材保持具８３を設置して、ガイド支柱３３に設置する。さらに、図２２に示すように、ヒータ具８１をガイド支柱３３の側方から設置して、ヒータ具８１の係止爪７７を本体部２５の係止部３８に係止させる。そして、蓋部材保持具８３をガイド支柱３３に沿って下降させて蓋部材２３をヒータ具８１の円形凹陥部９１に挿入する。この状態で、ヒータ具８１に通電して、立上り管部９の内周面及び蓋部材２３の外周面を約２０秒間加熱して溶融させる。 Next, as shown in FIG. 21, a lid member holder 83 holding the lid member 23 is installed on the centering tool / lid member holder 51 and installed on the guide column 33. Furthermore, as shown in FIG. 22, the heater tool 81 is installed from the side of the guide column 33, and the locking claw 77 of the heater tool 81 is locked to the locking part 38 of the main body 25. Then, the lid member holder 83 is lowered along the guide column 33 and the lid member 23 is inserted into the circular recess 91 of the heater 81. In this state, the heater tool 81 is energized to heat and melt the inner peripheral surface of the rising pipe portion 9 and the outer peripheral surface of the lid member 23 for about 20 seconds.
溶融が完了すると、図２３に示すように、蓋部材保持具８３を上方に移動し、さらにヒータ具８１を側方に取り外す。そして、蓋部材保持具８３をガイド支柱３３に沿って下降させて、蓋部材２３を立上り管部９の上部に挿入する。このとき、蓋部材２３と仮栓１９との間の空気が圧縮されることになるが、図２４に示すように、棒部材が蓋部材２３に押されて弁体９８が移動して弁開状態になって空気が導管１側に抜けるので、空気が圧縮されることなく蓋部材２３を立上り管部９に容易に押し付けることができる。この状態で、蓋部材２３が立上り管部９に融着する。その後、図２５に示すように、芯出し具兼蓋部材保持具５１を取り外す。
その後は、図２６に示すように保持棒６２を取り外し、さらに本体部２５を取り外して完了となる。
When the melting is completed, as shown in FIG. 23, the lid member holder 83 is moved upward, and the heater 81 is further removed laterally. Then, the lid member holder 83 is lowered along the guide column 33, and the lid member 23 is inserted into the upper portion of the riser tube portion 9. At this time, the air between the lid member 23 and the temporary stopper 19 is compressed. However, as shown in FIG. 24, the rod member is pushed by the lid member 23 and the valve body 98 moves to open the valve. Since the air is released to the conduit 1 side in the state, the lid member 23 can be easily pressed against the rising pipe portion 9 without the air being compressed. In this state, the lid member 23 is fused to the rising pipe portion 9. Then, as shown in FIG. 25, the centering tool / lid member holder 51 is removed.
Thereafter, as shown in FIG. 26, the holding rod 62 is removed, and the main body portion 25 is further removed.
以上のように、本実施の形態によれば、配管分岐部材３の撤去作業を容易に行うことができる。
しかも、切削作業や融着作業は立上り管部９に対して位置決めされたガイド支柱３３を基準にして行なうようにしているので、切削位置や融着位置がずれることがなく、確実に行なうことができる。
また、蓋部材２３を立上り管部９に挿入して融着する際に仮栓１９を介して蓋部材側と導管１側が連通するようにしているので、蓋部材２３の挿入に際して空気が圧縮されることなくスムーズな蓋部材２３の挿入ができ、この点においても蓋部材２３の確実な融着を可能にしている。
As described above, according to the present embodiment, it is possible to easily remove the pipe branching member 3.
In addition, since the cutting work and the fusion work are performed with reference to the guide column 33 positioned with respect to the rising pipe portion 9, the cutting position and the fusion position can be reliably performed without being shifted. it can.
Further, when the lid member 23 is inserted into the rising pipe portion 9 and fused, the lid member side and the conduit 1 side are communicated with each other via the temporary stopper 19, so that the air is compressed when the lid member 23 is inserted. The lid member 23 can be smoothly inserted without any problems, and the lid member 23 can be reliably fused in this respect as well.
なお、蓋部材２３を融着した後の状態で、仮栓１９を介して蓋部材２３側と導管１側が連通することになれば、導管１に流れるガスが仮栓１９の連通孔を通じて蓋部材２３側に充満することになり、それ故、蓋部材２３の融着状態を導管１を流れるガスの漏れの有無によって検査できるという効果もある。この点、仮栓に連通孔が設けられない従来例では、導管１を流れるガスは仮栓で止められているので、蓋部材の融着状態を導管１を流れるガスの漏れの有無という観点からの検査はできないので、この点でも本発明は優れていると言える。 If the lid member 23 side and the conduit 1 side communicate with each other through the temporary stopper 19 in a state after the lid member 23 is fused, the gas flowing in the conduit 1 passes through the communication hole of the temporary stopper 19. Therefore, there is an effect that the fusion state of the lid member 23 can be inspected by the presence or absence of leakage of the gas flowing through the conduit 1. In this regard, in the conventional example in which the communication hole is not provided in the temporary stopper, the gas flowing through the conduit 1 is stopped by the temporary stopper. Therefore, it can be said that the present invention is excellent in this respect.
なお、上記の実施の形態では、仮栓１９の構造として、中央に芯棒９７を設置する例を示したが、仮栓１９の構造としてはこれに限られるものではなく、例えば図２７、図２８に示すように、仮栓１９を、中央部に下方に向けて拡径する開口部１０３を設け、該開口部１０３を、常温では固体であるが融着時の熱によって軟化するワックス１０５によって封止しておくようにしてもよい。このようにすれば、融着時に蓋部材２３を押し付けたときに、熱と空圧でワックス１０５が除去されて開口部１０３が開き、仮栓１９、蓋部材２３及び立上り管部９で囲まれた空間の空気が圧縮されることがなく、蓋部材２３の設置を円滑に行うことができる。 In the above-described embodiment, an example in which the core rod 97 is installed at the center as the structure of the temporary stopper 19 is shown. However, the structure of the temporary stopper 19 is not limited to this, and for example, FIG. As shown in FIG. 28, the temporary stopper 19 is provided with an opening 103 that expands downward in the center, and the opening 103 is made of a wax 105 that is solid at normal temperature but softens by heat during fusion. You may make it seal. In this way, when the lid member 23 is pressed at the time of fusion, the wax 105 is removed by heat and air pressure and the opening 103 is opened, and is surrounded by the temporary stopper 19, the lid member 23, and the rising pipe portion 9. The air in the space is not compressed and the lid member 23 can be installed smoothly.
１ 導管
３ 配管分岐部材
５ 供給管
７ サドル部
９ 立上り管部
１１ チーキャップ
１３ 分岐管部
１５ ノーブローガスバック
１７ カッター
１９ 仮栓
２１ 切削工具
２３ 蓋部材
２５ 本体部
２７ ベース部
２９ 連結バー
３１ 装着部材
３３ ガイド支柱
３５ 凹部
３７ 溝部
３８ 係止部
３９ チェーン
４１ 端部材
４３ クランプ部材
４４ クランプバー
４５ 周溝
５１ 芯出し具兼蓋部材保持具
５３ 矩形板部
５５ アーム部
５７ ハンドル部
５９ 挿入孔
６０ クランプレバー
６１ 切削具
６２ 保持棒
６３ 凹陥部
６４ 凸部
６５ 貫通孔
６６ プランジャー軸
６７ 切削ハウジング
６８ 刃物ベース
６９ 切削刃
７０ 切削台座
７１ バネ
７３ ガイド筒
７５ ラチェット軸
７７ 係止爪
７９ 融着具
８１ ヒータ具
８３ 蓋部材保持具
８５ カバー部材
８７ ヒータユニット
８９ 切欠部
９１ 円形凹陥部
９３ 筒形凸部
９５ 仮栓保持部材
９７ 芯棒
９８ 弁体
９９ 鋸
１０１ ラチェットレバー
１０３ 開口部
１０５ ワックス
DESCRIPTION OF SYMBOLS 1 Conduit 3 Piping branch member 5 Supply pipe 7 Saddle part 9 Rise pipe part 11 Cheecap 13 Branch pipe part 15 No blow gas back 17 Cutter 19 Temporary stopper 21 Cutting tool 23 Lid member 25 Main part 27 Base part 29 Connection bar 31 Installation Member 33 Guide column 35 Concave portion 37 Groove portion 38 Locking portion 39 Chain 41 End member 43 Clamp member 44 Clamp bar 45 Circumferential groove 51 Centering tool and lid member holder 53 Rectangular plate portion 55 Arm portion 57 Handle portion 59 Insertion hole 60 Clamp Lever 61 Cutting tool 62 Holding rod 63 Recessed portion 64 Protruded portion 65 Through hole 66 Plunger shaft 67 Cutting housing 68 Cutting tool base 69 Cutting blade 70 Cutting base 71 Spring 73 Guide cylinder 75 Ratchet shaft 77 Locking claw 79 Fusing tool 81 Heater Tool 83 Lid member holder 85 Cover member 87 Heater unit 89 Notch 91 Circular recess 93 Cylindrical protrusion 95 Temporary stopper holding member 97 Core rod 98 Valve body 99 Saw 101 Ratchet lever 103 Opening 105 Wax
Claims (5)
円盤状の仮栓を前記立上り管部内に挿入する仮栓設置工程と、前記立上り管部を前記サドル部近傍にて除去する立上り管部除去工程と、円盤状で樹脂製の蓋部材の外周面及び前記除去によって現れた立上り管部の内周面とを加熱して溶融する溶融工程と、前記蓋部材を前記立上り管部に挿入して両者を接着する接着工程とを備え、
前記接着工程において、前記蓋部材を前記立上り管部に挿入したときに、前記仮栓に、前記蓋部材側と前記導管側の空間を連通させる連通路が形成されるようにしたことを特徴とする配管分岐部材の撤去方法。 A method of removing a resin pipe branching member comprising a rising pipe part rising from a saddle part fixed to a conduit and a branch pipe part provided by branching from the rising pipe part,
Temporary stopper installation step of inserting a disk-shaped temporary stopper into the rising pipe portion, a rising pipe portion removing step of removing the rising pipe portion in the vicinity of the saddle portion, and an outer peripheral surface of the disc-shaped resin lid member And a melting step that heats and melts the inner peripheral surface of the riser portion that has appeared by the removal, and an adhesion step that bonds the both by inserting the lid member into the riser portion,
In the bonding step, when the lid member is inserted into the riser pipe portion, a communication passage is formed in the temporary stopper to communicate the space on the lid member side and the conduit side. To remove the pipe branching member.
ガイド支柱を備えると共に前記導管に着脱自在に装着される本体部と、前記ガイド支柱にガイドされて前記立上り管の上端面及び内周面を切削する切削具と、前記ガイド支柱に支持されて前記蓋部材を保持する蓋部材保持具と、前記ガイド支柱に支持されて前記蓋部材の外周面と前記立上り管の内周面を加熱して溶融するヒータ具と、前記立上り管部の軸芯に対する前記本体部の装着位置を決める芯出し具を備えてなり、
該芯出し具は、前記立上り管に挿入可能な凸部と、該凸部の側方に延出するアーム部と、該アーム部に設けられて前記ガイド支柱に挿入可能な貫通孔を有し、該貫通孔を前記ガイド支柱に挿入すると共に前記凸部を前記立上り管部に挿入することによって前記立上り管の軸芯に対する前記本体部の装着位置を位置決めするようにしたことを特徴とする配管分岐部材の撤去装置。 Pipe branching member removal apparatus for use in a method of removing a resin pipe branching member comprising a rising pipe part rising from a saddle part fixed to a conduit and a branch pipe part branched from the rising pipe part Because
A main body provided with a guide column and detachably attached to the conduit, a cutting tool guided by the guide column to cut the upper end surface and the inner peripheral surface of the riser, and supported by the guide column and the A lid member holder that holds the lid member, a heater tool that is supported by the guide column and that heats and melts the outer circumferential surface of the lid member and the inner circumferential surface of the riser, and the axial center of the riser tube Comprising a centering tool for determining the mounting position of the main body,
The centering tool has a convex portion that can be inserted into the riser, an arm portion that extends to the side of the convex portion, and a through hole that is provided in the arm portion and can be inserted into the guide column. The piping is characterized in that the through hole is inserted into the guide column and the convex portion is inserted into the rising pipe portion, thereby positioning the mounting position of the main body portion with respect to the axis of the rising pipe. Branch member removal device.
ガイド支柱を備えると共に前記導管に着脱自在に装着される本体部と、前記ガイド支柱にガイドされて前記立上り管の上端面及び内周面を切削する切削具と、前記ガイド支柱に支持されて前記蓋部材を保持する蓋部材保持具と、前記ガイド支柱に支持されて前記蓋部材の外周面と前記立上り管の内周面を加熱して溶融するヒータ具とを備え、
前記切削具は、切削刃が形成された切削台座と、該切削台座を切削対象となる立上り管側に常時付勢する付勢手段と、切削具を前記本体部に係止させる係止部材とを備えてなることを特徴とする配管分岐部材の撤去装置。 Pipe branching member removal apparatus for use in a method of removing a resin pipe branching member comprising a rising pipe part rising from a saddle part fixed to a conduit and a branch pipe part branched from the rising pipe part Because
A main body provided with a guide column and detachably attached to the conduit, a cutting tool guided by the guide column to cut the upper end surface and the inner peripheral surface of the riser, and supported by the guide column and the A lid member holder that holds the lid member, and a heater tool that is supported by the guide column and heats and melts the outer peripheral surface of the lid member and the inner peripheral surface of the riser pipe,
The cutting tool includes a cutting pedestal on which a cutting blade is formed, urging means for constantly urging the cutting pedestal toward the rising pipe to be cut, and a locking member for locking the cutting tool to the main body. An apparatus for removing a pipe branching member, comprising:
ガイド支柱を備えると共に前記導管に着脱自在に装着される本体部と、前記ガイド支柱にガイドされて前記立上り管の上端面及び内周面を切削する切削具と、前記ガイド支柱に支持されて前記蓋部材を保持する蓋部材保持具と、前記ガイド支柱に支持されて前記蓋部材の外周面と前記立上り管の内周面を加熱して溶融するヒータ具とを備え、
前記ヒータ具は、前記蓋部材の外周面を加熱する凹陥部と、前記立上り管の内周面を加熱する凸部とを備えてなることを特徴とする配管分岐部材の撤去装置。 Pipe branching member removal apparatus for use in a method of removing a resin pipe branching member comprising a rising pipe part rising from a saddle part fixed to a conduit and a branch pipe part branched from the rising pipe part Because
A main body provided with a guide column and detachably attached to the conduit, a cutting tool guided by the guide column to cut the upper end surface and the inner peripheral surface of the riser, and supported by the guide column and the A lid member holder that holds the lid member, and a heater tool that is supported by the guide column and heats and melts the outer peripheral surface of the lid member and the inner peripheral surface of the riser pipe,
The said heater tool is provided with the recessed part which heats the outer peripheral surface of the said cover member, and the convex part which heats the inner peripheral surface of the said riser pipe, The removal apparatus of the piping branch member characterized by the above-mentioned.
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| JP5577205B2 (en) * | 2010-09-21 | 2014-08-20 | 桐生瓦斯株式会社 | How to remove piping branch |
| JP5802567B2 (en) * | 2012-01-23 | 2015-10-28 | 京葉瓦斯株式会社 | How to remove piping branch |
| JP6200709B2 (en) * | 2013-06-28 | 2017-09-20 | 大肯精密株式会社 | Tube clamp device |
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| JPH07241708A (en) * | 1994-03-08 | 1995-09-19 | Osaka Gas Co Ltd | Inner face cutting tool for pipe |
| JP4497743B2 (en) * | 2001-04-02 | 2010-07-07 | 東京瓦斯株式会社 | Removal method of resin branch pipe |
| JP4514047B2 (en) * | 2005-03-18 | 2010-07-28 | 東京瓦斯株式会社 | Removal method of resin branch pipe |
| JP2006334707A (en) * | 2005-06-01 | 2006-12-14 | Tokyo Gas Co Ltd | Cutter for cutting resin joint, method for cutting resin joint, and method for removing resin branch pipe |
| JP4809149B2 (en) * | 2006-07-19 | 2011-11-09 | 東京瓦斯株式会社 | Resin branch pipe removal method and resin branch pipe removal tool |
| JP2009150464A (en) * | 2007-12-20 | 2009-07-09 | Keiyo Gas Kk | Method of removing pipe branch member |
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